Cooling water warning device of vacuum pump of laminating machine

Abstract

The invention relates to a cooling water warning device of a vacuum pump of a laminating machine. The cooling water warning device is directly connected with the vacuum pump, an air switch, a pressure relay and a buzzer are serially connected to form a closed loop by a lead wire, and 220V alternating current is applied to the closed loop. Compared with the prior art, the cooling water warning device has the advantages that the pressure relay is adopted for detecting whether the circulating water in the vacuum pump is supplied normally, and an alarm can be given timely when water is supplied abnormally, the overheating operating risk of the vacuum pump can be effectively eliminated, the inspection frequency of equipment serviceman is reduced and the labor cost of enterprises is reduced.

Description

technical field [0001] The invention relates to an alarm device, in particular to a cooling water alarm device for a vacuum pump of a laminator. Background technique [0002] 2X rotary vane vacuum pump is one of the basic equipment for gas extraction. It is widely used in the field of solar cell module packaging due to its compact structure, small size, light weight, high ultimate vacuum, stable operation, and easy maintenance. At present, the laminator for solar cell module packaging is mainly equipped with 2X rotary vane vacuum pump to extract the gas generated during the lamination process, but because the 2X rotary vane vacuum pump will generate a large amount of oil mist during the gas extraction process and the operation noise is large, etc. In order to maintain the internal environment of the production workshop, the vacuum pump is generally installed separately from the laminator in the industry. The laminator is installed separately from the vacuum pump, which main...

AI Technical Summary

Problems solved by technology

The laminator is installed separately from the vacuum pump, which maintains the internal environment of the production workshop to a certain extent, but the connection between the cooling water pipe and the vacuum pump is easy to fall off (caused by the vibration of the vacuum pump during operation), and when the cooling water is blocked and the flow is insufficient or cut off , it is difficult to be discovered by equipment inspectors in time when the above situation occurs

The 2X rotary vane vacuum pump is cooled by circulating water, and the operating temperature should be kept between 5-40°C. The vacuum pump is in a state of overheating for a long time (the temperature of the pump body exceeds 40°C). Air bubbles in components after pressing

The invention can timely detect the failure of the laminator and issue a voice alarm through the voice alarm function, which can prolong the service life and management level of the laminator, but there is no special alarm device for the most important cooling device

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