Outer discharging type pressure regulating device for circulating water pump

Abstract

The invention discloses an outer discharging type pressure regulating device for a circulating water pump. The device is a hollow cylindrical barrel body, wherein the hollow cylindrical barrel body comprises a cyclone pipe, and a pressure regulating pipe which is connected to the cyclone pipe; the inside diameter of the cyclone pipe is less than that of the pressure regulating pipe; a separating part for separating air and water is arranged in the cyclone pipe, and the separating part is a spiral flow guide blade which is fixedly connected to the inner wall of the cyclone pipe. According to the device, the separating part for separating air and water is arranged in the cyclone pipe and is capable of forcibly forming spiral flow through water stream, and the purpose of separating air and water is achieved through the centrifugal force; and meanwhile, when the separated air enters the pressure regulating pipe, the air enters a suction hole and then enters a through hole and finally is exhausted through an exhaust valve at the front end or the exhaust valve at the tail end; the device is simple in structure, hard to vibrate, low in noise, and small in fluid conveying resistance.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a leaking type circulating water pump pressure regulating device. Background technique [0002] Bubbles are inevitably generated when the water pump is working. The vaporization pressure of clear water at room temperature is about 3.17Kpa (water temperature is 25°C). When the local pressure inside the pump is lower than the vaporization pressure, bubbles will be generated there. For cavitation. [0003] The pressure at the inlet of the impeller is the lowest, and the cavitation phenomenon is the most serious. At the same time, the oxygen dissolved in the water will escape, so the water sent by the pump contains a lot of water bubbles. In addition, the causes of excessive air bubbles at the pump outlet include the following reasons: the temperature of the water flow of the inlet pump increases in summer; the sealing of the water inlet and the water pipe of the water pump is n...

AI Technical Summary

Problems solved by technology

In addition, the causes of excessive air bubbles at the water pump outlet include the following reasons: the temperature of the water flow of the inlet pump increases in summer; the sealing of the water inlet and the water pipe of the water pump is not good, causing air to enter the pump; Under the environment, the pipe wall corrodes and has holes. When these holes are exposed to the water surface, the air enters the water pipe from the holes.

[0004] A large number of water bubbles are mixed with water in the pipeline. On the one hand, the gas is highly compressible, and the gas in the local flow area where the pressure suddenly increases sharply shrinks, or even annihilates. This sudden volume change in space will cause vibration and serious noise; on the other hand On the one hand, water bubbles occupy a certain amount of space in the pipe coil, which creates great dynamic resistance to fluid delivery

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