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Water pump blade wheel

A water pump impeller and blade technology, which is applied in the field of water pump impellers and can solve problems such as welding and fixing of blades

Active Publication Date: 2019-01-11
江西省莲花水轮机厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because blade is arc-shaped structure, so welding torch can't stretch into the inside of water flow channel and blade is welded and fixed, especially the impeller that is used on the large-scale water pump, the depth of its water flow passage far exceeds welding torch in the prior art length
Therefore, the welding and fixing of each position of the blade cannot be realized by welding.

Method used

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  • Water pump blade wheel
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The invention provides a water pump impeller, which includes such as figure 1 As shown in the front cover 1 and the rear cover 2, the central position of the rear cover 2 is provided with a central shaft hole 3 for connecting with the drive shaft, and the position corresponding to the central shaft hole 3 on the front cover 1 is provided with a water inlet 4 , there is a gap between the front cover 1 and the rear cover 2, and several blades 5 are arranged between the front cover 1 and the rear cover 2. The trajectory of any point moving along the length direction of blade 5 is an arc curve. All the blades 5 are evenly distributed along the circumference of the central shaft hole 3, and any blade 5 is fixedly connected to the inner side wall of the front cover 1 and the inner side wall of the rear cover 2, thereby forming a gap between any two adjacent blades 5. One end of the water flow channel 6 communicates with the water inlet 4 on the front cover 1 , and the other ...

Embodiment 2

[0024] The basic structure is the same as that of the first embodiment, the difference is that the blade 5 is divided into a front section 5.1, a middle section 5.2 and a rear section 5.3 along its own length direction. During the welding process of the front section 5.1 of the blade 5 and the front cover 1, the welding torch is inserted through the water outlet 7 of the water flow channel 6 to complete the welding of the front section 5.1, while the rear end 5.3 of the blade 5 makes the welding torch pass through the front cover 1. The water inlet 4 extends into the water flow channel 6 to complete the welding between the rear section 5.3 of the blade 5 and the front cover 1, and finally the welding gun extends from the welding through hole 8 on the front cover 1 to the position of the middle section 5.2 of the blade 5 The welding of the middle section 5.2 of the blade 5 to the front cover 1 is completed, and the welding through-hole 8 is closed during the welding of the middl...

Embodiment 3

[0026] The basic structure is the same as that of the second embodiment, except that the welding through hole 8 corresponds to the entire blade 5 , that is, the welding process of the entire blade 5 near the front cover 1 is realized through the welding through hole 8 . This method is applicable to the situation where the water inlet 4 and the water outlet 7 are relatively small or there are other accessories that cannot be passed through by the welding torch. Therefore, part or all of the blade 5 is welded to the front cover 1 through the welding through hole 8, which should fall within the protection scope of the application of the present invention.

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PUM

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Abstract

The invention discloses a water pump blade wheel. The water pump blade wheel comprises a front cover and a rear cover; a central shaft hole which is connected with a driving shaft is formed in the central position of the rear cover; a water inlet is formed in position, corresponding to the central shaft hole, of the front cover; the water pump blade wheel is characterized in that a space is reserved between the front cover and the rear cover; a plurality of blades are arranged between the front cover and the rear cover; all blades are uniformly distributed in the circumferential direction of the central shaft hole; any blade is fixedly connected with each of the inside wall of the front cover and the inside wall of the rear cover; a water flowing channel for water flow to pass through is formed between any adjacent two blades; one end of the water flowing channel communicates with the water inlet in the front cover; and welding through holes are respectively formed in the positions, corresponding to the blades, of the front cover. According to the water pump blade wheel provided by the invention, the performance of the product is good and the production and machining are facilitated in the mode of machining in a split manner and then welding and assembling.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a water pump impeller. Background technique [0002] The water pump impeller is the core part of the water pump, and the water flow is pumped through the rotation of the water pump impeller. The water pump impeller in the prior art generally includes a front cover, a rear cover and several blades distributed along the circumferential direction between the front cover and the rear cover. The above-mentioned front cover, blades and rear cover are integrally formed by casting process, so that any A water flow channel is formed between two adjacent impellers. Although this conventional water pump impeller can already meet the needs of actual production, due to the integral casting process, there must be more or less sand holes in the product, so the strength of the blade is poor, and there is a risk of damage after long-term use , which is also one of the reasons for restrictin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/24F04D29/02F04D29/58F04D29/62
CPCF04D29/026F04D29/242F04D29/5893F04D29/628
Inventor 刘东方
Owner 江西省莲花水轮机厂有限公司