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A shaftless inducer with adjustable blades for pumps

An inducer and adjustable technology, which is applied to parts, pumps, and pump components of pumping devices used for elastic fluids, can solve problems that do not involve the adjustable device of inducer blades, and achieve easy maintenance and operation , The effect of reducing manufacturing costs

Active Publication Date: 2021-09-21
江苏瑞阳环保有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent only improves the vane structure of the inducer, and does not involve the adjustable device for the vane of the inducer

Method used

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  • A shaftless inducer with adjustable blades for pumps
  • A shaftless inducer with adjustable blades for pumps
  • A shaftless inducer with adjustable blades for pumps

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1, such as Figure 3a , Figure 3b and Figure 5 As shown, the first gear 8 is an external gear, and the second gear is a ring gear 9. The number of teeth of the gears is not limited thereto, and the number of teeth can be adjusted according to the desired rotation angle. The hexagonal groove 10 is opened at the bottom center of the blade connecting rod 12, and the top of the control rod 15 is provided with a hexagonal boss 14, which is used for connecting and fixing the connecting rod 12 and the control rod 15 when the blade is adjusted. The pump casing 6 is provided with a stepped hole, the control rod 15 is provided with a shaft shoulder, the two ends of the control rod spring 16 are respectively connected and fixed with the pump casing 6 and the control rod 15 , and the seal 17 is placed between the pump casing 6 and the control rod 15 . The control rod cover plate 18 is sleeved on the control rod 15, and is fixed on the pump casing 6 by a screw 19, so as ...

Embodiment 2

[0034] Example 2, such as Figure 4a , Figure 4b and Figure 6As shown, the first gear 8 is an external gear, and the second gear is an external gear 9'. The number of gear teeth is not limited thereto, and the number of teeth can be adjusted according to the desired rotation angle. Its principle is identical with embodiment 1.

[0035] The shaftless inducer with adjustable blades for pumps according to the present invention is different from the traditional inducer in structure. The inducer is a shaftless inducer. The shaft 4 is connected and fixed with the lock nut 2; the inducer blade 5 is an adjustable blade, and its adjustment principle is to push the control rod 15 to connect with the connecting rod 12 and fix it through the hexagonal groove, and then continue to push the control rod 15 to make the The first gear installed on the connecting rod 12 is separated from the second gear installed inside the cover plate, and then the control rod 15 is rotated to make the fi...

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Abstract

The invention provides a shaftless inducer with adjustable blades for a pump, which includes a pump casing and an impeller, the impeller is installed in the pump casing, and a number of inducer blades are evenly distributed on the extension of the impeller cover plate of the impeller. A positioning device is provided at the junction of the inducer blade and the impeller cover plate, and the inducer blade is overcome by the external force to overcome the positioning of the positioning device and drive the inducer blade to rotate, which is used to adjust the angle of the inducer blade; the pump A thrust rotating device is provided outside the shell for providing the external force. The invention makes the pump operate at the optimal working point under different working conditions by adjusting the blade placement angle; the invention is suitable for the situation where the incoming flow at the inlet is low pressure; Installed on the extended part of the cover plate of the impeller, the weight of the inducer is reduced, and more inlet area is provided, thereby improving the efficiency of the pump.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a shaftless inducer with adjustable blades for a pump. Background technique [0002] When the water pump is working, if the pressure at a certain point in the pump drops to the working temperature, the saturated vapor pressure of the water will start to vaporize, and this vaporization phenomenon will be intensified with the decrease of the pressure in the pump casing and the increase of the water temperature. Cavitation will cause damage to the impeller and the pump casing. After a certain period of time, it will cause spots and cracks on the surface. At the same time, it will also generate noise and make the pump body vibrate. Long-term operation in the cavitation state will greatly reduce the service life of the pump. There are many ways to prevent or reduce cavitation, such as adding an inducer at the inlet, choosing an appropriate pump installation height, increasing the diame...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/44
CPCF04D29/445F04D29/2277
Inventor 朱荣生王芮付强王秀礼龙云林彬
Owner 江苏瑞阳环保有限公司
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