Alarm detection pressure tapping structure for double-diaphragm pump

Abstract

The alarm detection pressure tapping structure for the double-diaphragm pump comprises a cylinder body, a cylinder cover, a pressure tapping ring and double diaphragms, the pressure tapping ring is composed of an inner ring and an outer ring, ring grooves are formed in the two side faces of the inner ring respectively, and the inner ring is provided with a plurality of axial sampling channels for communicating the ring grooves in the two sides. And a pressure taking channel is arranged on the cylinder body and is communicated with the annular groove on one side. The attaching position of the inner ring and the outer ring extends towards the inner wall face of the diaphragm to form a thin-wall annular extending part, the thin-wall annular extending part of the inner ring and the thin-wall annular extending part of the outer ring are attached together to form an annular sampling part, and the annular sampling part is clamped between the edge of the oil diaphragm and the edge of the material diaphragm in a closed mode; a plurality of radial sampling channels are formed in the annular sampling part along the circumference, one end of each radial sampling channel is communicated with the double-diaphragm cavity, and the other end of each radial sampling channel is communicated with the annular groove in the other side. The structure can effectively solve the problem that the diaphragm enters the pressure tapping channel under high pressure to cause blockage, and the reliability of pressure tapping and detection is improved.

Description

technical field [0001] The invention relates to structural improvement of a double-diaphragm pump, in particular to an alarm detection and pressure-taking structure for a double-diaphragm pump, and belongs to the technical field of pump structures. Background technique [0002] Diaphragm pump is an important type of pump. Its structure generally includes a power chamber and a fluid delivery chamber. The two are separated by a diaphragm. The power chamber uses the reciprocating motion of the piston to pressurize the diaphragm. The suction and thrust are formed in the fluid conveying chamber, so that the fluid to be conveyed is continuously sucked in from the inlet and then pressed out from the outlet. [0003] In the diaphragm pump, there is a double diaphragm pump, which has a two-layer structure, which is convenient for setting an alarm mechanism. When a layer of diaphragm ruptures, an alarm will be issued, and the maintenance can be stopped in time to avoid the complete ru...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an alarm detection pressure-taking structure for a double-diaphragm pump. and detection reliability

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