The positive and negative pressure pressure clamps of the cement tank in the mixing station are equipped with carbon steel safety valves. These valves prevent the tank from being damaged by balancing the positive and negative pressures in both directions. The use of carbon steel material enables it to adapt to harsh working conditions. The clamps facilitate the connection and enhance the maintenance efficiency. They are the key components that ensure the safe operation of the cement tank, reduce production costs, and maintain the stable production of the mixing station.