Positive and negative pressure resistant sealing apparatus of balance shaft two-way valve plate used for drainage pipeline

A positive and negative pressure resistant sealing apparatus of balance shaft two-way valve plate used for drainage pipeline, comprising a main body, a pressure conductor and a balance shaft two-way power valve plate;

• the main body comprising a pressure conduction chamber and a drainage cavity;
• the pressure conduction chamber is located on the side of the drainage cavity;
• the pressure conductor is arranged in the pressure conduction cavity of the main body;
• the upper end of the pressure conduction chamber has an inclined slope structure;
• wherein at the upper end of the pressure conduction chamber, there is an orifice;
• the upper end face of the orifice is provided with a pressure conducting membrane;
• the lower end of the pressure conducting membrane is in contact with the upper wall surface of the pressure conductor;
• wherein a transmission connecting rod is fixedly installed at the lower end of the pressure conductor;
• wherein a limited bottom cover is fixedly installed on the lower wall of the pressure conduction chamber;
• wherein the transmission connecting rod runs through the limited bottom cover;
• the lower end of the transmission connecting rod has an arc surface structure;
• wherein a pair of balance stand are fixedly installed on the lower wall of the limited bottom cover;
• the balance shaft two-way power valve plate is rotatably connected between a pair of the balance stand;
• wherein a support rod is fixedly installed on the upper wall of the left end of the balance shaft two-way power valve plate;
• the upper end of the support rod has an arc surface structure;
• the lower end of the transmission connecting rod is in contact with the upper end of the support rod;
• the right end of the balance shaft two-way power valve plate is fixedly installed with an open-close valve plate;
• the open-close valve plate is in contact with the lower end port of the drainage cavity;
• wherein a magnetic core holder is fixedly installed between a pair of balance stand and above the balance shaft two-way power valve plate;
• wherein the magnetic core holder and the balance shaft two-way power valve plate are provided with a magnetic core power source.