Air exhausting and pressure releasing device for air pump

Abstract

The invention relates to an air exhausting and pressure releasing device for an air pump, comprising a valve body, a flexible air exhausting valve sleeve, a valve base, a spherical valve core and a spring. The valve body is internally provided with an air exhausting channel; the diameter of the inlet section of the air exhausting channel is smaller than the diameter of the outlet section of the air exhausting channel, and the middle section of the air exhausting channel is a conical surface cavity; the upper section of the valve body is a mounting part, and a plurality of small air holes are radially and annularly arranged on the middle section of the valve body; the flexible air exhausting valve sleeve is sleeved on the middle section of the valve body and covers the small air holes; thevalve base is provided with a pressure releasing opening at the bottom and is connected with the valve body by threads; the spherical valve core and the spring are arranged in the valve base and the valve body up and down, and the spherical valve core is made to be in tight contact with the conical surface part at the middle section of the air exhausting channel arranged in the valve body under the elastic force of the spring. The air exhausting and pressure releasing device has small volume, is convenient to install and safe and reliable to use and can adjust and release the set pressure. The air exhausting and pressure releasing device is used after being arranged at air exhausting holes in the cylinder of the air pump. The air exhausting and pressure releasing device can be used as an air exhausting valve in normal condition and can be an pressure releasing valve which can be automatically started when the pressure in an air cylinder is overhigh or the flexible air exhausting valvesleeve is adhered and invalid so as to release the pressure in the air cylinder, thereby preventing the bursting of the air cylinder.

Description

technical field [0001] The invention relates to air pump accessories used in aquariums, fish tanks, courtyard ponds, etc., in particular to an air pump exhaust and pressure relief device. Background technique [0002] At present, aquariums, fish tanks, garden ponds, etc. usually need to be equipped with air pumps to increase the oxygen in the water. This kind of air pump for oxygenation mostly adopts electromagnetic air pump. The principle of electromagnetic air pump is: an elastic diaphragm is arranged on a cylinder body, and an air chamber is formed between the elastic diaphragm and the cylinder body; The suction hole and the exhaust hole connected to the outside of the air chamber are both unidirectional and opposite in direction; the elastic diaphragm of the air pump is usually connected to an L-shaped arm to drive, and one end of the L-shaped arm has a There is a magnet, the other end of which is mostly fixed on the air pump shell and rotates around the fixed end. It i...

AI Technical Summary

Problems solved by technology

[0003] The exhaust valve in this kind of electromagnetic air pump usually adopts the method of vent hole and diaphragm, such as rubber valve plate, etc., the valve plate is used for a long time, the aging of the valve plate, environmental pollution, etc. often cause the valve plate to stick and fail, and the air pressure in the cylinder cannot Release, resulting in excessive pressure in the cylinder, there is a hidden danger of air pump burst

In addition, the combination of the traditional valve plate and the exhaust hole of the cylinder needs to be realized by other parts.

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