Water inlet section structure of multiple-stage centrifugal pump with fish-mouth suction port

A technology of water inlet section and suction port, which is applied in the field of water inlet section structure of multistage centrifugal pumps, can solve problems such as energy loss, reduction of hydraulic performance of multistage centrifugal pumps, and smaller liquid flow space, so as to reduce energy loss, Effect of reducing disturbance and improving hydraulic performance

Pending Publication Date: 2019-01-11
无锡艾比德泵业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the liquid enters the suction port, it is disturbed by the bearing box, and the space for the liquid to flow suddenly becomes smaller, and the liquid that hits the bearing box in the forward direct...

Method used

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  • Water inlet section structure of multiple-stage centrifugal pump with fish-mouth suction port

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Embodiment Construction

[0014] The specific implementation of this embodiment will be described below in conjunction with the accompanying drawings.

[0015] figure 1 It is a sectional view of the present invention. Since the flow losses inherent in multistage centrifugal pumps are well known and constitute a problematic and unpredictable source of flow losses, changes in the design of the inlet section structure are required. Such as figure 1 As shown, the present invention discloses a water inlet section structure of a multistage centrifugal pump whose suction port is a fish mouth type, including a water inlet section pump body 1 and a first-stage middle section pump body 3 . The pump body 1 of the water inlet section and the pump body 3 of the middle stage of the first stage are sleeved on the pump shaft 10 . The second end of the pump body 1 of the water inlet section is equipped with a first-stage middle-section pump body 3 . An O-ring sealing groove 4 is provided between the second end of t...

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Abstract

The invention relates to a water inlet section structure of a multiple-stage centrifugal pump with a fish-mouth suction port. The water inlet section structure is characterized by comprising a water inlet section pump body and a first-stage middle section pump body, wherein the water inlet section pump body and the first-stage middle section pump body sleeve a pump shaft; the suction port is formed in the first end of the water inlet section pump body; a bearing box is arranged in the suction port; the first end of the bearing box is in the shape of a solid cone, the cone shape is gradually reduced from the tail end of the central line to the first end, and the shape of the top end of the first end is similar to a fish mouth; the second end of the bearing box is a hollow cylinder and is open; and a slide bearing is installed at the second end of the bearing box, the slide bearing is a hollow cylinder and the two ends of the slide bearing are open separately, and the first end of the pump shaft stretches into the slide bearing. According to the water inlet section structure, the energy loss of a liquid at the suction port is reduced, and the hydraulic performance of the multiple-stage centrifugal pump is improved.

Description

technical field [0001] The invention relates to the field of centrifugal pumps, in particular to a water inlet section structure of a multistage centrifugal pump whose suction port is fish mouth type. Background technique [0002] The role of the structure of the water inlet section of the multistage centrifugal pump is to suck the liquid in the pipeline from the suction port of the pump body of the water inlet section, then flow into the first stage impeller, and pass through the impellers of all stages in turn. Therefore, the flow state of the liquid in the suction port will directly affect the flow state of the liquid in the impeller, thereby affecting the working efficiency and cavitation resistance of the multistage centrifugal pump. The water inlet section structure of the multistage centrifugal pump in the prior art includes a water inlet section pump body. The first end of the pump body in the water inlet section is provided with a suction port, and a bearing box is...

Claims

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Application Information

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IPC IPC(8): F04D29/046F04D29/08F04D29/42F04D1/06
CPCF04D29/046F04D1/06F04D29/086F04D29/4273F04D29/4293
Inventor 吴明亮杨超君
Owner 无锡艾比德泵业有限公司
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