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A water inlet channel of a pump body

A technology of water inlet flow channel and pump body, which is applied in the direction of pumps, pump components, non-variable pumps, etc., and can solve problems such as increased NPSH, unsuitable rectangular inlets, and decreased efficiency.

Active Publication Date: 2017-01-04
钱向阳
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing pipeline pumps often use a continuous turning elbow-shaped water inlet chamber. The disadvantage is that compared with the horizontal pump with the same impeller, the efficiency is reduced by 5% to 8%, the NPSH is increased, and the maximum flow rate of the pump is reduced by 20%. about
Although the existing ring-shaped suction chambers commonly used in segmental multi-stage pumps can improve the flow state of the inlet water and improve the cavitation performance, the efficiency is still greatly reduced; while the bell-shaped suction chambers commonly used in large vertical pumps can overcome the above Disadvantages, but its rectangular inlet is not suitable for general centrifugal pumps

Method used

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  • A water inlet channel of a pump body
  • A water inlet channel of a pump body
  • A water inlet channel of a pump body

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention.

[0014] Such as Figures 1 to 3 The shown water inlet channel of a pump body includes a water absorption chamber, the water absorption chamber includes an annular body 1 and a flow channel part 2, the annular body 1 is eccentrically arranged, and a diversion cone 6 is arranged at the bottom of the annular body 1, and the inlet of the water absorption chamber The water inlet 3 is circular, and the cross section of the flow channel part 2 gradually shrinks from the annular body 1 to the water inlet 3, and the area gradually decreases.

[0015] A rib 21 is provided at the center of the flow channel part 2 to improve the stability of the flow.

[0016] The distance between the center of the ring body 1 and the center of...

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Abstract

The invention discloses a pump inflow runner which comprises a water sucking chamber. The water sucking chamber comprises an annular body and a runner portion, the annular body is arranged eccentrically, a diversion cone is arranged at the bottom of the annular body, a water inlet of the water sucking chamber is round, and the cross section of the runner portion from the annular body to the water inlet gradually shrinks and gradually reduces in area. By the pump inflow runner, efficiency of a water pump is improved, flow of the water pump is increased, and net positive suction head of the water pump is lowered.

Description

technical field [0001] The invention relates to the technical field of pump body manufacture, in particular to a pump body water inlet channel. Background technique [0002] Existing pipeline pumps often use continuous turning elbow-shaped water inlet chambers. The disadvantages are that compared with horizontal pumps with the same impeller, the efficiency is reduced by 5% to 8%, the NPSH is increased, and the maximum flow rate of the pump is reduced by 20%. about. Although the existing ring-shaped suction chambers commonly used in segmental multi-stage pumps can improve the flow state of the inlet water and improve cavitation performance, the efficiency is still greatly reduced; while the bell-shaped suction chambers commonly used in large vertical pumps can overcome the above Disadvantages, but its rectangular inlet is not suitable for general centrifugal pumps. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention propos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/44F04D29/00
Inventor 钱向阳
Owner 钱向阳
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