Automatic adjusting device for sudden increase of internal water pressure of water pump

Abstract

The invention relates to the technical field of water pumps, and discloses an automatic adjusting device for sudden increase of internal water pressure of a water pump. The automatic adjusting device comprises a fixed cylinder, a piston is movably connected in the fixed cylinder, a movable rod is fixedly connected to the bottom of the piston, and a rotating column wheel is rotatably connected between the left inner wall and the right inner wall of the fixed cylinder. An annular groove is formed in the side wall of a water inlet pipe, eight annularly-arranged straight grooves are formed in the inner side wall of the water inlet pipe, a gear ring is rotationally connected into the annular groove, eight annularly-arranged arc-shaped grooves are formed in the right side of the gear ring, and water baffles are connected to the opposite sides of the eight straight grooves in an inserted mode. Water downwards extrudes the piston, and the water baffles are driven to extend out under the action of the movable rod, the rotating column wheel, the gear ring, an arc-shaped groove and a sliding rod, so that the inner diameter of a water inlet pipe is reduced, the flow of water entering the pump body through the water inlet pipe is also reduced, the water pressure in the pump body begins to be reduced, and the effect that the water pressure in the pump body is automatically reduced through movement of a top plug is achieved.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to an automatic adjustment device when the internal water pressure of the water pump suddenly increases. Background technique [0002] A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions, and suspoemulsions. According to different working principles, it can be divided into positive displacement water pump, vane pump and other types. [0003] When the water pump is running, the internal water pressure will suddenly increase. If it cannot be adjusted in time, it will easily cause damage to the water pump. The existing solution is generally to use a frequency converter to adjust the speed of the impeller, but suddenly reduce the impeller from the high ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an automatic adjustment device when the internal water pressure of the water pump suddenly increases, which has the advantage of automatically adjusting and lowering the pressure when the internal water pressure of the water pump suddenly increases, and solves the general problem of the existing water pressure adjustment methods. The frequency converter is used to adjust the speed of the impeller, but the sudden reduction of the speed of the impeller under high pressure can easily cause damage to the impeller and reduce the service life of the impeller

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