Electromagnetic valve device with backflow preventing function and automatic sewage isolating function

Abstract

The invention discloses an electromagnetic valve device with a backflow preventing function and an automatic sewage isolating function. The electromagnetic valve device with the backflow preventing function and the automatic sewage isolating function comprises a valve body and a valve deck which are matched with each other. The valve deck is provided with a first flushing electromagnetic valve anda second flushing electromagnetic valve. The valve body is of an integrated structure. A four-way embedded piece is assembled in the middle of the valve body. The valve body is provided with a waterinlet, a first water outlet and a second water outlet, wherein the water inlet, the first water outlet and the second water outlet communicate. The first water outlet and the second water outlet communicate with vacuum breakers on the corresponding sides correspondingly. Each vacuum breaker comprises a vacuum breaking valve deck, a vacuum breaking valve element, a vacuum breaking spring and a sealrubber film, wherein the vacuum breaking valve deck is provided with a vent opening, the vacuum breaking valve element is arranged in the vacuum breaking hole of the valve body, the vacuum breaking spring is arranged between the vacuum breaking valve element and the valve body, and the seal rubber film is arranged outside the vacuum breaking valve element. The valve deck is provided with an anti-siphon device. A seal membrane sheet is arranged at the valve opening between the valve body and the valve deck. The electromagnetic valve device with the backflow preventing function and the automatic sewage isolating function has the advantages of being compact in structure and convenient to assemble and maintain.

Description

technical field [0001] The invention relates to the technical field of electromagnetic valve manufacturing, in particular to an electromagnetic valve device with the functions of anti-reflux and automatic dirt isolation. Background technique [0002] The solenoid valve flushing device currently used in the market, due to the limitation of the mold structure, the valve body is a split structure, with two valve bodies on the left and right, and a tee in the middle to connect the valve bodies on both sides, which occupies a relatively large space and requires installation and maintenance. Comparing loaded down with trivial details, the joint between valve body and valve body is easy to leak. The split valve body has three parts, which is costly and not economical and practical; in addition, the water inlet connection of the split valve body is generally threaded, and the assembly process is cumbersome, time-consuming and laborious. [0003] When the existing solenoid valve flu...

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Problems solved by technology

[0002] The solenoid valve flushing device currently used in the market, due to the limitation of the mold structure, the valve body is a split structure, with two valve bodies on the left and right, and a tee in the middle to connect the valve bodies on both sides, which occupies a relatively large space and requires installation and maintenance. Relatively cumbersome, the connection between the valve body and the valve body is prone to water leakage

The split valve body has three parts, which is costly and not economical and practical; in addition, the water inlet connection of the split valve body is generally threaded, and the assembly process is cumbersome and time-consuming.

[0003] When the existing solenoid valve flushing device is in use, if a siphon effect occurs, the sewage is easily sucked into the cavity of the solenoid valve, causing the failure of the solenoid valve or polluted water is sucked back into the water source. In addition, the valve body with an ordinary anti-siphon structure is Small siphon aperture structure is unreasonable, generally does not have real anti-siphon effect

[0004] In addition, when the existing solenoid valve flushes water, because the water pressure is different in each place, the impulse force generated is different, resulting in flushing when the water pressure is high, and the water will splash. Therefore, the existing solenoid valve structure needs to be further improved.

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