Non-negative-pressure horizontal water supply equipment with purification function

Abstract

The invention belongs to the technical field of water supply equipment, and discloses non-negative-pressure horizontal water supply equipment with a purification function. The non-negative-pressure horizontal water supply equipment comprises a tank body, wherein a breather valve shell is fixedly mounted at an air duct flange at the top of the tank body, and an air inlet valve head is fixedly connected to the top of the breather valve shell; and an inner vent hood and an activated carbon filter cartridge are fixedly mounted in the breather valve shell. A slow-release piston, large liquid grooves and a small liquid groove jointly form a hydraulic liquid slow-release mechanism, the downward release speed of hydraulic liquid is reduced, the ascending speed of the slow-release piston is slowed down, a push rod is limited by the slow-release piston, and the ascending speed of the push rod is slowed down at the same time, so that the closing speed of the piston at a connecting port is reduced, the closing time is prolonged, the opening time of a ventilation channel is prolonged, the time for injecting gas inwards is prolonged, ventilation can still be performed for a period of time after the internal and external pressure difference is lower than a threshold value, internal negative pressure is thoroughly eliminated, the negative influence of the negative pressure on the environment in the tank body is reduced to the maximum extent, and the service life of the tank body is prolonged.

Description

technical field [0001] The invention belongs to the technical field of water supply equipment, in particular to a non-negative pressure horizontal water supply equipment with purification function. Background technique [0002] The steady flow tank, also known as the steady flow compensator, is an important part of the non-negative pressure water supply equipment. It can intelligently compensate the water consumption. In the urban water supply, it is mainly used for high-rise water supply, and it uses the breathing valve when breathing down. It can prevent negative pressure and avoid damage to the tank due to negative pressure. [0003] The breathing valve used in the existing stabilizing tank has a simple internal structure, which can effectively prevent vacuum generation, but there are still some shortcomings. The working principle of the breathing valve is that when there is a pressure difference between the internal and external air pressure, the external air pressure is...

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Problems solved by technology

[0003] The breathing valve used in the existing stabilizing tank has a simple internal structure, which can effectively prevent vacuum generation, but there are still some shortcomings. The working principle of the breathing valve is that when there is a pressure difference between the internal and external air pressure, the external air pressure is large. The internal air pressure is small, causing the external air pressure to generate a large thrust on the blocked piston and finally push the piston away. The external air flow enters the tank to compensate the air pressure in the tank. The conventional breathing valve uses a spring-like elastic component as the piston. The opening and closing of the hinge, the precondition for spring contraction is that the internal and external pressure difference is greater than the elastic force of the spring, so there is a threshold at the opening and closing of the piston. When the pressure difference exceeds the threshold, the piston will open. Before that, The negative pressure in the tank has been generated, and when the piston closes, it will close if the pressure difference is lower than the threshold, but there is a small negative pressure in the tank, and this part of the negative pressure becomes a difficult problem for the spring-type breathing valve to overcome. blind spot

[0004] When the tank is about to overflow when the water enters, a floating ball is added to the air channel inside the existing tank to cooperate with the vertical rod, and the flat plate is lifted by the buoyancy to seal the joint. Smaller, considering that after being corroded in the later stage, the vertical rod may not move smoothly up and down, which may make it difficult to push up to seal the vent, and the plugging performance of the push plate straight up and down is average

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