Built-in water level and flow detection component of water pump and usage method thereof

Abstract

The invention provides a water pump built-in water level and flow detection assembly and a usage method thereof. The water pump built-in water level and flow detection assembly comprises a machine shell, a motor and a water pump impeller. The rotating shaft of the motor is vertically arranged and the bottom of the motor is sleeved with the water pump impeller. The water pump impeller is positionedin a water outlet cavity, and a water inlet cavity is formed in the lower side of the water outlet cavity. The bottom end of the rotating shaft extends into the water inlet cavity. A conical ring-shaped clutch ring is fixed at the spare end of the rotating shaft. A drainage ring is fixed on the inner bottom surface of the water inlet cavity. The assembly further comprises an annular magnet. The magnetic poles of the annular magnet are distributed in the axial direction. A second annular magnet which is opposite to the annular magnet is placed above the annular magnet in a cylindrical barrel,so that the annular magnet and the second annular magnet are always repellent. A conical ring type abutting box is fixed on the top surface of the second annular magnet. A third magnet is fixed in theabutting box. An induction coil assembly is further fixed at the bottom of the cylindrical barrel. When the third magnet rotates, the induction coil is driven to passively cut the magnetic inductionline. In this way, the current is formed, and then water level and flow monitoring function can be realized.

Description

technical field [0001] The invention relates to a water level and flow detection assembly used in a control system of a submersible pump. Background technique [0002] The submersible pump is an important equipment used to transmit the water source of the water source to a longer distance or to a higher position. It is widely used in many life and production fields such as groundwater mining, mine operations, and landscape fountains. Because the submersible pump When running, it needs to be soaked in water, so its driving motors are in a completely sealed state, which makes it unable to dissipate heat through air during operation, but completely relies on water flow for heat dissipation. It will cause the motor to burn out, which will cause the submersible pump to fail. At the same time, because the working position of the submersible pump is in the water, it is very inconvenient to maintain. In order to solve this problem, the current common method is to add a water level s...

AI Technical Summary

Problems solved by technology

[0007] When it is detected at the same time that the water flow rate at the water inlet of the submersible pump is lower than the normal working water suction flow range of the submersible pump and the difference between the operating temperature of the driving motor of the submersible pump and the maximum operating temperature of the driving motor is less than 3-10°C, it means that the motor of the submersible pump is malfunctioning. The operating load is too large, and the rotor rotation resistance of the submersible pump motor is too large

[0008] This set is very cumbersome, the actual production cost increases, the sensor components, the failure rate is high, and the stability is low

Especially the water level detection uses a float and a connecting rod, and the device takes up a lot of space

In addition, the float and connecting rod are located outside the submersible pump. When used in the river, they are easily disturbed by the tank or other debris, resulting in inaccurate water level detection and misjudgment of the working status of the pump.

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