Automatic magnetic check valve

Abstract

The invention relates to an automatic magnetic check valve, which comprises a cover body, an upper magnet, a valve body, a shaft seat, a valve, a lower magnet and a sealing ring, wherein the shaft seat is arranged on one side of the bottom of the valve body; the valve is hinged on the shaft seat; the upper magnet is arranged on the valve body; the lower magnet is arranged on the valve; the sealing ring is arranged between the valve and the valve body; and the upper magnet and the lower magnet are in a Z-plane asymmetric structure. When asymmetric magnets attract each other, an Fx component force not equal to zero is generated, the consistency of the repeated opening / closing action of the valve is greatly improved under the action of the Fx, and the valve is closed to be accurately attracted and sealed; the valve body has a high flow structure, so that an effective area of fluid flowing through the valve body is greatly improved; the valve body is hardly wound with hair and cotton and is cleaning-free; the valve can realize 90-degree opening in a circular pipeline, the drainage is not hindered and the flow velocity is high; and the overflow of sewage is prevented, polluted air, insects and cockroaches are prevented. The check valve is conveniently arranged at a sewage pipeline to replace the conventional water return bend, is suitable for sewage drainage, and is also suitable for other fluid pipelines with one-way flow requirement.

Description

technical field [0001] The invention belongs to the field of drainage pipeline devices and relates to a magnetic automatic check valve. Background technique [0002] The drainage pipes of existing buildings usually use return water bends to store water and floor drain water seals to prevent harmful gases from escaping. Although the architectural design department has made a lot of considerations and complicated calculations in order not to damage the water seal when designing the drainage system, However, in reality, the damage to the water seal of the drainage system is very common and serious, seriously affecting the indoor air quality; in addition, once the drainage pipe is blocked, the water seal has no effect on preventing the sewage from overflowing and backflowing; once the water seal dries up, it will completely lose anti-fouling The anti-odor function is directly connected to the septic tank, causing air pollution. Insects, cockroaches and many harmful microorganism...

AI Technical Summary

Problems solved by technology

[0002] The drainage pipes of existing buildings usually use return water bends to store water and floor drain water seals to prevent harmful gases from escaping. Although the architectural design department has made a lot of considerations and complicated calculations in order not to damage the water seal when designing the drainage system, However, in reality, the damage to the water seal of the drainage system is very common and serious, seriously affecting the indoor air quality; in addition, once the drainage pipe is blocked, the water seal has no effect on preventing the sewage from overflowing and backflowing; once the water seal dries up, it will completely lose anti-fouling The anti-odor function is directly connected to the septic tank, causing air pollution. Insects, cockroaches and many harmful microorganisms will also drill into the room from the sewer to form a transmission route; the water-sealed floor drain that meets the national standard has high drainage resistance and poor self-cleaning ability. It is easy to block; until now, the drainage system in the building prevents harmful and odorous gases from entering the room, and the problems of preventing sewage backflow in the ground floor of the building have not been solved.

[0003] At present, anti-fouling and anti-odor floor drains with different structures have come out one after another. Although some of the above problems have been solved, there are still many deficiencies: the structure design of the valve body is unreasonable, and the drainage flow is small; Not only is it easy to entangle hair, cotton wool, etc., but it will also cause drainage overflow due to its obstruction; the valve opening angle is small, and the drainage flow rate is slow; the structure is too complicated, the production cost is high, and the valve is inconvenient to clean

[0004] More importantly, it is a magnetic check valve product used in the existing drainage pipeline. The magnetic poles of the upper and lower magnets have the same shape and area, and the opposite magnetic poles of the two magnets are completely opposite and attract each other. The axes coincide, and the physical geometric symmetry axes of the two magnets also coincide. The magnetic pole shapes of the two magnets are installed symmetrically with respect to the Z plane, and there is obviously a problem of poor sealing, because the magnets installed symmetrically are in the direction of the attractive force Fy of the two magnets. The force within a certain range on the orthogonal plane is relatively weak, and it is easily affected by external forces, which weakens the consistency of valve opening and closing repeated actions, affects the accuracy of valve closing, and makes it difficult to guarantee the sealing.

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