Tangent pump for ship

A tangential pump, marine technology, applied in the directions of pumps, pump components, and components of pumping devices for elastic fluids, etc., can solve the problems of structural defects, reliability that does not meet the matching requirements of marine pressure water tanks, etc., and achieve a simple structure. , The effect of strong impact resistance and small axial thrust

Inactive Publication Date: 2018-03-16
王友宏
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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 matching requirements of marine pressure water tanks in terms of reliability due to structural defects

Method used

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  • Tangent pump for ship
  • Tangent pump for ship
  • Tangent pump for ship

Examples

Experimental program
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Embodiment Construction

[0016] The present invention will be further described below according to the accompanying drawings and in conjunction with the embodiments.

[0017] figure 1 The marine tangent pump shown is a vertical structure pump, which includes motor 1, bracket 2, pump body 3, pump shaft 4, seal expansion part 5, mechanical seal 6, gland 7, impeller 8, pump cover 9 and nut 10. The bracket 2 located in the middle section is a connecting piece of frame structure, its two ends are parallel to each other, the upper end is connected with the motor 1 , and the lower end is connected with the pump body 3 . The pump shaft 4 is fitted and connected with the output shaft end of the motor 1 , and the shaft section of the pump shaft 4 extending into the pump body 3 is fitted with a mechanical seal 6 and a seal expansion member 5 . The gland 7 cooperates with the pump body 3 to not only axially position the mechanical seal 6 but also form a sealing chamber for storing lubricating oil. The impeller...

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PUM

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Abstract

The invention discloses a marine tangential pump, which comprises a motor, a bracket, a pump body, a pump shaft, a sealing expansion part, a mechanical seal, a gland, an impeller, a pump cover and a nut. The bracket is directly connected to the motor and the pump body. The mechanical seal and seal expansion parts are installed on the pump shaft. The gland and the pump body cooperate to not only axially position the mechanical seal but also form a sealing cavity for storing lubricating oil. The impeller is installed at the end of the pump shaft and locked by a nut to rotate with the motor. The pump cover cooperates with the pump body to form the pump chamber where the impeller is placed. In the present invention, the impeller is an open structure, which is in the shape of a gear in the axial direction, and 8 to 16 radial blades of alternate lengths are exposed and evenly distributed on the side plate surface, and axial balance holes are arranged between the long and short blades. The radial blades are wide inside and narrow outside. In the invention, the friction loss of the impeller disk is small, the axial force is small, the structure strength is high, and the impact resistance is strong. In addition, the cooling condition of the mechanical seal is good, and there will be no excessive temperature difference with the medium, so it is not easy to be damaged.

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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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22F04D29/24F04D29/42F04D29/06F04D29/58
CPCF04D29/2266F04D29/061F04D29/242F04D29/426F04D29/586
Inventor 王友宏朱巧君
Owner 王友宏
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