Double-suction impeller and double-suction vortex pump

A double-suction impeller and swirl pump technology, applied in the field of machinery, can solve problems such as low efficiency of swirl pumps, achieve stable operation, ensure efficiency and lift, and reduce vibration

CN103994097AInactive Publication Date: 2014-08-20JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a double-suction impeller and a double-suction vortex pump. The width of a flow channel is staggered by 40 percent to 60 percent through blades on the two opposite faces of the double-suction impeller. The double-suction vortex pump is provided with the double-suction impeller, the width of the blades of the double-suction impeller is 40 percent to 60 percent of the width of an inner cavity of a pump body, the pump body of the double-suction vortex pump is further provided with an auxiliary water inlet chamber, the auxiliary water inlet chamber is located between the inner cavity of the pump body and a packing chamber, and is communicated with the inner cavity of the pump body, an auxiliary water inlet is formed in the auxiliary water inlet chamber, the auxiliary water inlet is a radial inlet, and the inlet direction is parallel to the plane of the impeller. Through the staggered structure of the blades on the two opposite sides of the double-suction impeller, the double-suction impeller can operate more stably, and vibration is reduced. The width of the blades of the double-suction impeller is 40 percent to 60 percent of the width of the inner cavity of the pump body, large impurities can pass through the pump body, and the efficiency and lift of the pump can be guaranteed.
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Description

technical field

[0001] The invention belongs to the mechanical field, in particular to a double-suction impeller and a double-suction swirl pump comprising the double-suction impeller. Background technique

[0002] Swirl pumps are mostly used to pump complex media or fluids containing impurities, such as two-phase fluids containing garbage, short fiber matter or feces. Compared with other impurity pumps, swirl pumps have better non-clogging performance and can pass through about the same diameter as the pump outlet. solid particles, but it is destructive to the conveyed materials. The axial clearance between the impeller and the pump body is not as sensitive to the performance of the pump as the centrifugal pump. There is no need for clearance adjustment. The impellers of swirl pumps are mostly open radial impellers. , the manufacturing process is simple, the impeller channel is easy to process and the impeller is easy to balance, the operation is stable, the pump suction pe...

Examples

Embodiment Construction

[0018] 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.

[0019] like figure 1 As shown, the blades on both sides of the double-suction impeller 3 of the present invention are staggered by 40-60% of the width of the flow path, that is, L 1 =0.5L 2 The dislocation structure of the blades on opposite sides of the double-suction impeller 3 can make the operation of the double-suction impeller 3 more stable and reduce vibration. Preferably, when the opposite vanes of the double-suction impeller 3 are staggered by 50% of the flow path width, the smoothness of the double-suction impeller 3 is the best.

[0020] like figure 2 As shown, the double-suction swirl pump of the present invention includes a main shaft 14, a front cover 2, a pump body 4, a packing chamber 6, a bearing body upper bracket 7, a right bearing gland 8, a wear-r...