Balance explosion-proof valve

A balance explosion-proof valve, comprising:

• a valve body;
• a pressure relief assembly assembled on an upper side of the valve body;
• and
• an air pressure balance assembly assembled on a lower side of the pressure relief assembly;
• wherein the valve body comprises an outer ring body, an inner ring body, and connecting arms, wherein the connecting arms are connected to an inner surface of the outer ring body and an outer surface of the inner ring body, pressure relief holes are defined between the outer ring body and the inner ring body, a central sleeve hole is defined in the inner ring body, and the central sleeve hole penetrates through the inner ring body in a vertical direction;
• wherein the pressure relief assembly comprises a piston pressed against a surface of the outer ring body, a waterproof breathable membrane, and an upper cover plate covering the waterproof breathable membrane;
• wherein a periphery of the waterproof breathable membrane is coupled to the piston, the air pressure balance assembly comprises a guide rod connected to a lower side of the piston, a lower plugging cover connected to a lower end of the guide rod, and a balance valve;
• wherein the balance valve is mounted in the guide rod and the lower plugging cover, a central hole is defined in the guide rod and penetrates through the guide rod in the vertical direction, the central hole is communicated with the waterproof breathable membrane, an outer protruding ring protrudes from a periphery of the lower plugging cover in the radial direction, a pressure relief spring is sleeved on an outer side of the guide rod, and the pressure relief spring is supported between the inner ring body and the outer protruding ring.

A balance explosion-proof valve, comprising:

• a valve body;
• a pressure relief assembly assembled on an upper side of the valve body;
• and
• an air pressure balance assembly assembled on a lower side of the pressure relief assembly;
• wherein the valve body comprises an outer ring body, an inner ring body, and connecting arms, wherein the connecting arms are connected to an inner surface of the outer ring body and an outer surface of the inner ring body, pressure relief holes are defined between the outer ring body and the inner ring body, a central sleeve hole is defined in the inner ring body, and the central sleeve hole penetrates through the inner ring body in a vertical direction;
• wherein the pressure relief assembly comprises a piston pressed against a surface of the outer ring body, a waterproof breathable membrane, and an upper cover plate covering the waterproof breathable membrane;
• wherein a periphery of the waterproof breathable membrane is connected to the piston, the air pressure balance assembly is mounted on a lower side of the piston and passes through the central sleeve hole, and the piston comprises an inner concave cavity, a pressing step, and an outer ring portion;
• wherein the pressing step protrudes upward from a periphery of the inner concave cavity, the outer ring portion protrudes upward from an outer edge of the pressing step, the periphery of the waterproof breathable membrane is fixed to the pressing step and covers the inner concave cavity, a bottom surface of the outer ring portion is pressed against a first sealing ring disposed on the surface of the outer ring body, the upper cover plate defines vent grooves corresponding to the outer ring portion, the vent grooves communicate the waterproof breathable membrane with an outside.