Check valve mechanism, drainage and air conditioning system

Abstract

The invention relates to a non-return valve mechanism, a drainage device and an air-conditioning system, wherein the non-return valve mechanism includes a valve body, a non-return floating member, a first limiter and a second limiter, and the valve body is provided with a water supply flow The passage includes a water-locking section and a water-discharging section arranged sequentially in the direction of water flow. The side wall of the water-locking section is provided with a guide, which extends into the water-discharging section along the direction of water flow. The first limiting member and the second The stoppers are respectively connected to the two ends of the guide, and the anti-reverse floating member is movably matched with the guide, and the anti-reverse float can move back and forth between the first limiter and the second limiter under the guidance of the guide , used to realize the on-off control of the channel. Once the external power is removed, under the action of the gravity of the water flow and the gravity of the anti-reverse floating member itself, the non-reverse floating member immediately cuts off the passage without being affected by external elastic force or other forces.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a check valve mechanism, a drainage device and an air conditioning system. Background technique [0002] In the air-conditioning system, the air-conditioning internal unit needs to achieve cooling or heating through the heat exchange process. During the heat exchange process, condensed water will be generated, and the condensed water will be stored in the water receiving tray. Generally, the water pump will discharge the condensed water in the water tray, but due to the limitation of the actual installation, when the water storage capacity of the pump head is greater than the water storage capacity of the water tray in the unit, after the pump stops working, the water in the drain pipe will flow backwards Back in the water tray, resulting in overflow in the water tray. For this reason, a check valve structure is generally provided in the drain pipe to prevent water from flowing b...

AI Technical Summary

Problems solved by technology

Generally, the water pump will discharge the condensed water in the water tray, but due to the limitation of the actual installation, when the water storage capacity of the pump head is greater than the water storage capacity of the water tray in the unit, after the pump stops working, the water in the drain pipe will flow backwards back to the water tray, resulting in overflow in the water tray

For this reason, a check valve structure is generally installed in the drain pipe to prevent water from flowing backward into the drain pipe. However, the general check valve structure has poor sensitivity and cannot respond quickly and reliably.

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