Protection device for submersible axial flow pump

Abstract

The invention discloses a protection device for a submersible axial flow pump. The device comprises a casing, an elbow, a bump, a screw rod, a vertical pipe, a sleeve, a gear, a first motor, a fixed rod, a baffle, a fixed block, a sliding block, a spring, a connecting rod, a drawstring, a second motor, a rotating shaft, a bearing, a guide vane, an impeller and a switch. The protection device of the submersible axial flow pump has the advantages of simple structure and convenient operation, debris adsorbed on the surface of the sleeve can be swept away by the rotation of the sleeve, thereby avoiding the phenomenon that a pipe opening is blocked so that water cannot be pumped, the spiral arrangement of the baffle causes a water source to enter into the vertical pipe in a spiral shape, the friction force to the impeller is reduced, and the service life is prolonged; the protection device of the submersible axial flow pump reduces the wire pulling degree when the axial flow pump rotates through the elastic potential energy of the spring, the motor can be controlled to stop by the switch when a wire is pulled to a certain extent, the problem that the wire is broken so that the device cannot be operated is avoided, and the safety of the axial flow pump is improved during operation.

Description

technical field [0001] The invention relates to a protection device, in particular to a protection device for a submersible axial flow pump, and belongs to the technical field of axial flow pumps. Background technique [0002] The axial flow pump relies on the force generated by the blades of the rotating impeller on the liquid to transport the liquid along the axial direction. The axial power of the axial flow pump is the largest at zero flow. Therefore, the valve on the discharge pipeline must be opened before the pump is started. Reduce the starting power. The axial flow pump is generally vertical, and the impeller is submerged under the water. There are also horizontal or oblique axial flow pumps. When the impeller of the small axial flow pump is installed above the water surface, it is necessary to use a vacuum pump to start the exhaust water. The blades of the axial flow pump are divided into two types: fixed type and adjustable type. The operating conditions of large ...

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Problems solved by technology

[0003] At present, there are several types of axial flow pumps on the market, such as vertical, horizontal, inclined, and through flow, which can be widely used for large flow pumping. However, due to the large pumping volume of axial flow pumps, it is inevitable that some debris will be sucked In the pump, the wear of the impeller reduces the service life of the axial flow pump; and for different media, the speed of the pump is different, causing the rotation of the pump body to easily pull the wire, or even cause the wire to disconnect and fail to work normally

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