Annular U type diaphragm for hydraulic diaphragm pump

Abstract

The invention relates to a ring-shaped U type diaphragm for a hydraulic diaphragm pump, the side wall of the ring-shaped U type diaphragm surrounds and forms a hollow structure, the middle part of thering-shaped side wall is concave, the two ends extend outwards and form a horn shape, the outer edge of the horn mouth on one end is liquid-sealedly mounted on the diaphragm cavity wall of the hydraulic diaphragm pump, the outer edge of the horn mouth on the other end is distant from the diaphragm cavity wall, the horn mouth on the other end is equipped with a diaphragm plate liquid-sealedly matched therewith, the diaphragm plate combines with the ring-shaped U type diaphragm to divide the hydraulic diaphragm pump into an oil cavity on the ring-shaped side wall and the inside of the diaphragmplate and a medium cavity on the outside of the ring-shaped side wall and the diaphragm plate. The invention provides a ring-shaped U type diaphragm for a hydraulic diaphragm pump, which has long service life, reduced radial size and little material consumption, and is easy to install and maintain.

Description

technical field [0001] The invention relates to a diaphragm for a hydraulic diaphragm pump. Background technique [0002] Due to the characteristics of high pressure, high efficiency, energy saving, no leakage, zero pollution, long life, and high reliability, hydraulic diaphragm pumps are widely used in various industries such as petroleum, chemical industry, food, medicine, electric power, and water treatment. Quantitative delivery of flammable, explosive, toxic, corrosive or non-corrosive media. The hydraulic diaphragm pump uses a rubber diaphragm to separate the conveying medium from the driving medium (oil). The reciprocating motion of the piston acts on the rubber diaphragm through the transmission of the oil medium, making the rubber diaphragm concave and convex, and completing the suction and discharge of the slurry. This kind of pump not only prevents the conveying medium from leaking out, but more importantly, it prevents the conveyed granular medium from contactin...

AI Technical Summary

Problems solved by technology

At present, the commonly used rubber diaphragm shape is a circular flat diaphragm, figure 1 It is a schematic diagram of the assembly of a traditional circular flat diaphragm, in which, 6-plunger, 7-circular flat diaphragm, in the actual use process, the outer round edge of the circular flat diaphragm is fixed, the inner side of the diaphragm is flexed and deformed front and rear, and the front and rear deflection The deformation size is related to the deformation stress. If the deflection deformation is too large, the stress generated by the diaphragm is also large. The stress of the circular flat diaphragm reaches the maximum value at the edge of the diaphragm and the middle of the circle, so the stress of the diaphragm is easy to concentrate and easy to produce Large fluctuations in stress, so that the life of the diaphragm is relatively short

In addition, the radial dimension of the circular flat diaphragm is too large, resulting in a lot of consumables, and there is no installation slot on the circular flat diaphragm, which is inconvenient for installation and maintenance

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