Large-sized tank positive and negative pressure integrated protection device

Abstract

A large-sized tank positive and negative pressure integrated protection device comprises a positive pressure outer cylinder, a negative pressure outer cylinder which is arranged below the positive pressure outer cylinder and a positive pressure exhaust port which is arranged at the top of the positive pressure outer cylinder; a negative pressure air inlet is formed in the middle upper portion of the negative pressure outer cylinder; a positive pressure middle cylinder with the top being in a closed type structure is arranged inside the positive pressure outer cylinder; a positive pressure inner cylinder which is in a hollow cylindrical structure is arranged inside the positive pressure middle cylinder; a lower edge opening of the positive pressure middle cylinder is arranged below the liquid level inside the positive pressure protection chamber; the lower end of the cylinder wall of the positive pressure inner cylinder is fixedly connected with a through hole machined in a positive pressure base plate; a lower port is communicated with a negative pressure protection chamber of the negative pressure outer cylinder; a negative pressure middle cylinder with the top being in a closed structure is arranged inside the negative pressure outer cylinder; a negative pressure inner cylinder which is in a hollow cylinder structure is arranged inside the negative pressure middle cylinder; the lower edge opening of the negative pressure middle cylinder is arranged below the negative pressure protection chamber; the lower end of the cylinder wall of the negative pressure inner cylinder is fixedly connected with the negative pressure base plate; the lower port is communicated with the atmosphere. The large-sized tank positive and negative pressure integrated protection device can balance the intensity of pressure inside the tank and protect the tank safety.

Description

technical field [0001] The invention relates to a large-scale sealed tank integrated positive and negative pressure protection device suitable for sewage treatment, kitchen waste treatment, biogas engineering and other anaerobic fermentation fields. Background technique [0002] The positive and negative pressure protection device is suitable for general sealed tanks. When the pressure inside the tank increases or decreases, the protector can discharge gas outward or inhale gas inward. To achieve the purpose of balancing the pressure inside the tank to protect the safety of the tank. [0003] The protection device in the prior art has the problem of occupying a large area, and the protection device is mostly installed on the top of the tank body. Due to the small position of the top, it directly affects the installation or use of other equipment. In addition, the protection device in the prior art still has the problems of low reliability and inadequate protection. Conte...

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Problems solved by technology

[0003] The protection device in the prior art has the problem of occupying a large area, and the protection device is mostly installed on the top of the tank. Due to the small position of the top, it directly affects the installation or use of other equipment

In addition, the protection device in the prior art also has the problems of low reliability and insufficient protection

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