Tangent pump for ships

A tangential pump, marine technology, applied to pumps, pump devices, pump components, etc., can solve the problems of reliability not meeting the matching requirements of marine pressure water tanks, structural defects, etc., and achieve strong impact resistance, simple structure, and maintain output The effect of water pressure

Inactive Publication Date: 2011-03-16
JIANGSU DEHUA PUMP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing horizontal centrifugal vortex pumps and vertical centrifugal pumps do not meet the mat

Method used

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  • Tangent pump for ships
  • Tangent pump for ships
  • Tangent pump for ships

Examples

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Example Embodiment

[0016] In the following, the present invention will be further explained based on the drawings and the embodiments.

[0017] figure 1 The marine tangential pump shown is a vertical structure pump, which includes a motor 1, a bracket 2, a pump body 3, a pump shaft 4, a seal expansion member 5, a mechanical seal 6, a gland 7, an impeller 8, and a pump cover 9. And nut 10. The bracket 2 in the middle section is a frame structure connecting piece, and its two end faces are parallel to each other, the upper end face is connected to the motor 1 and the lower end face is connected to the pump body 3. The pump shaft 4 is sleeved and connected with the output shaft end of the motor 1, and a mechanical seal 6 and a seal expansion member 5 are sleeved on the shaft section where the pump shaft 4 extends into the pump body 3. The gland 7 cooperates with the pump body 3 to not only axially locate the mechanical seal 6 but also form a sealing cavity for storing lubricating oil. The impeller 8...

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PUM

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Abstract

The invention discloses a tangent pump for ships, comprising a motor, a bracket, a pump body, a pump shaft, a seal expansion piece, a mechanical seal, a gland, an impeller, a pump cover and a nut, wherein the bracket is directly connected with the motor and the pump body; the pump shaft is provided with the mechanical seal and the seal expansion piece; the gland and the pump body are matched so as to position the mechanical seal axially and form a seal cavity for storing lubricating oil; the impeller is arranged on the end part of the pump shaft and screwed by the nut to form a structure rotating along with the motor; and the gland and the pump body are matched to form a pump chamber for accommodating the impeller. In the invention, the impeller is in an open structure, and is gear-shaped along the axial direction; 8-16 long and short radial blades are exposed and evenly distributed on the lateral plate surface of the impeller in an alternating mode, an axial balance hole is arranged between the short blade and the long blade, and each radial blade has wider inside and narrower outside; the impeller disk friction loss is small, the axial force is small, the structure strength is high, and the impact force resistance is strong; and the cooling condition of the mechanical seal is favorable, thus an oversize temperature difference between the mechanical seal and a medium can not occur and the mechanical seal can not be damaged easily.

Description

technical field [0001] The invention relates to a centrifugal water pump. Specifically, the invention relates to a tangential pump composed of an open impeller. The pump is matched with a marine pressure water tank. Background technique [0002] The domestic water supply and washing water of large and medium-sized ships are all supplied centrally by the configured pressure water tanks. The marine pressure water tank is a pressure-carrying water accumulator whose water pressure is maintained by a pump. There are mainly two types of water pumps for existing pressure water tanks. The most widely used is the horizontal centrifugal vortex pump, followed by the vertical centrifugal pump. The hydraulic performance of these two pumps can meet the matching requirements of marine pressure water tanks. However, in actual use, the impeller of the horizontal centrifugal vortex pump and the mechanical seal of the vertical centrifugal pump are easily damaged, which directly affects the re...

Claims

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Application Information

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IPC IPC(8): F04D13/06F04D29/22
Inventor 姜庆华顾才宝王洪英
Owner JIANGSU DEHUA PUMP MFG CO LTD
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