Diaphragm pump diaphragm with combined sealing structure and diaphragm pump

Abstract

The invention discloses a diaphragm pump diaphragm with a combined sealing structure and a diaphragm pump. The diaphragm comprises an outer edge sealing ring and an inner diaphragm body, wherein the diaphragm body is provided with a vibrating clamping part and a valve seat installation hole; the vibrating clamping part is provided with a vibrator sealing ring; the vibrator sealing ring is arranged below the diaphragm; the outer edge sealing ring is arranged above the diaphragm; an outer edge additional sealing ring of which the appearance is matched with that of the diaphragm is arranged outside the outer edge sealing ring; the outer edge additional sealing ring is connected with the outer edge sealing ring to form a whole body; an additional sealing ring is arranged inside the vibrator sealing ring; the shape of the sealing ring is similar to that of the vibrator sealing ring; a protruding valve seat sealing sleeve is arranged on the lower side of the valve seat installation hole; and the pump cover and the pump body of the diaphragm pump are provided with installation structures which are matched with the outer edge additional sealing ring, the vibrator additional sealing ring and the valve seat sealing sleeve. Through the improvement, the problem of the sealing of the diaphragm of the diaphragm pump is radically solved, the lift of the diaphragm pump is improved, the service life of the diaphragm pump is prolonged and unnecessary maintenance and waste is reduced.

Description

Technical field [0001] The invention relates to the technical field of diaphragm pumps for agricultural sprayers, in particular to a diaphragm pump diaphragm with a combined sealing structure and the diaphragm pump thereof. Background technique [0002] The sprayer is a small machine widely used in agriculture and forestry, and the common ones are manual and electric. The low-voltage electric sprayer is a replacement product of the manual sprayer. It uses dry batteries or batteries as the power source. The power source, pump body and liquid storage tank are installed together. The electric sprayer can greatly reduce the labor intensity of the operator, and the spray effect is good. It is a small sprayer that is currently used more. The core component of the electric sprayer is the pump, its structural performance and service life directly affect the performance and service life of the sprayer. [0003] The sealing structure of the diaphragm of the existing diaphragm pump i...

AI Technical Summary

Problems solved by technology

[0003] The sealing structure of the diaphragm of the existing diaphragm pump is simple, mainly relying on a sealing ring on its edge and the pressure of the pump body and the pump cover to realize the sealing of the diaphragm change. The sealing of the connection between the diaphragm and the valve seat is mainly The sealing is ensured by the pressure of the outer edge of the upper part of the valve seat on the diaphragm, and the sealing of the vibrating body part is mainly achieved by the buckling of the vibrating body sealing ring at the lower part of the diaphragm and the groove on the end face of the pump body to achieve sealing. Because the vibration of the diaphragm pump is relatively strong when it is running at high speed, it is easy to cause the above three parts to loosen, resulting in water leakage and air leakage, which will reduce the performance of the diaphragm pump, and what is more, damage the diaphragm pump.

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