Vibration-reducing structure for compressing diaphragm pump

Abstract

A vibration-reducing structure for compressing diaphragm pump features a pump head body and a diaphragm membrane. The pump head body includes three operating holes and a first curved vibration-reducing positioning structure circumferentially disposed around the upper side of each operating hole. The diaphragm membrane includes three equivalent piston acting zones and second curved vibration-reducing position structures situated at positions corresponding to the positions of the first curved vibration-reducing positioning structures. The first positioning structures in the pump head body, which may be grooves, slots, perforations, or protrusions, mate with the corresponding second positioning structures in the diaphragm membrane to reduce the moment arm generated during pumping by movement of the diaphragm membrane, which may be protrusions, grooves, slots, or perforations, thereby generating less torque to decrease the strength of vibrations and vibration noise.

Description

[0001]This application claims the benefit of provisional U.S. patent application Ser. No. 61 / 928,146, filed Jan. 16, 2014, and incorporated herein by reference.FIELD OF THE PRESENT INVENTION[0002]The present invention relates to a vibration-reducing structure for compressing a diaphragm pump used in an RO (reverse osmosis) purification system, and particularly to a structure that can reduce the vibration strength of the pump so that the annoying noise incurred by consonant vibration with the housing of the RO purification system is eliminated when the structure is installed on the housing of the RO purification system.BACKGROUND OF THE INVENTION[0003]Conventional compressing diaphragm pumps, which have been exclusively used with the RO (Reverse Osmosis) purifier or RO water purification system, are disclosed in U.S. Pat. Nos. 4,396,357, 4,610,605, 5,476,367, 5,571,000, 5,615,597, 5,626,464, 5,649,812, 5,706,715, 5,791,882, 5,816,133, 6,048,183, 6,089,838, 6,299,414, 6,604,909, 6,840...

AI Technical Summary

Benefits of technology

The present invention provides a vibration-reducing structure for a compressing diaphragm pump that reduces the strength of vibration, which is caused by torque. The structure includes a pump head body with three operating holes and at least one basic curved groove, slot, or perforated segment, and a diaphragm membrane with three equivalent piston acting zones each having an acting zone hole, an annular positioning protrusion, and at least one basic curved protrusion or set of protrusions. The three basic curved protrusions are completely inserted into the corresponding three basic curved grooves, slots, or perforated segments with a short length of moment arm, which generates less adverse vibration-causing torque. This reduces the vibration strength of the compressing diaphragm pump. The structure also features a cushion base with rubber shock absorber to eliminate annoying noise caused by resonant shaking.

Problems solved by technology

Referring to FIGS. 12 through 14, a serious drawback caused by vibrations has long existed in the above-described conventional compressing diaphragm pump.

However, the practical vibration suppressing efficiency of using the foregoing cushion base 100 with wing plates 101 and rubber shock absorber 102 only addresses the primary direct vibration, while reducing overall vibration only to a limited degree because the primary direct vibration causes a secondary vibration due to resonant shaking of the housing C to occur.

This resonant shaking causes the overall vibration noise of the housing C of the reverse osmosis purification unit to become stronger.

In addition to the drawback of increasing overall vibration noise of the housing C, a further drawback occurs in that the water pipe P connected on the water outlet orifice 22 of the pump head cover 20 will synchronously shake in resonance with the primary vibration (indicated by the hypothetic line a shown in FIG. 14).

This synchronous shaking of the water pipe P will result in still further drawbacks by causing other rest parts of the conventional compressing diaphragm pump to simultaneously shake.

The additional drawbacks of overall resonant shaking and water leakage in the conventional compressing diaphragm pump cannot be solved by the conventional way of addressing the foregoing primary vibration drawback.

How to substantially reduce all the drawbacks associated with the operating vibration of the compressing diaphragm pump has become an urgent and critical issue.

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