The water intake pump boat is a non-powered vessel. During winter, in the vast northern regions of China, extremely low temperatures cause ice to form on the water surface, preventing the pump boat from rising and falling freely. This disrupts normal water return, affecting production operations—and in severe cases, even poses safety risks to the vessel itself, leading to economic losses for society. Therefore, equipping the pump boat with an anti-freeze device is absolutely essential.

　　Regarding antifreeze measures for water pumping vessels, how has Hunan Zhongda Energy-Saving Pump Industry chosen to implement them? (Specific technical solutions can be provided.)

　　First, we ensure the hull meets anti-freeze requirements by selecting appropriate materials: the outer plating material is Q345E, capable of withstanding temperatures as low as -40°C. Second, we employ submersible pumps for water spraying to prevent freezing, along with aeration-based anti-freeze measures. Additionally, the pump room is constructed using rockwool-coated color steel panels, as detailed below: The return water pump and its submersible anti-freeze system.

　　1. When designing the pump boat, locally reinforce the internal framework according to design requirements to enhance the buoyancy structure's resistance to damage. Additionally, install several antifreeze submersible pumps around the perimeter of the boat. These pumps should be arranged either clockwise or counterclockwise, ensuring that there is a submersible pump positioned at the port side, starboard side, stern, and bow of the boat. The antifreeze pumps must be fully submerged below the water surface at a specified depth. Once the river begins to freeze, simply turn on the power supply to the antifreeze pumps—water will then be sprayed out to prevent ice formation.

　　The pump boat keeps water flowing continuously in a clockwise or counterclockwise direction within an area of approximately 20m by 10m around it, ensuring that the water remains unfrozen—even in extremely cold weather—thus guaranteeing the safe operation of the pump boat. When warmer weather arrives and ice formations begin to melt, creating ice jams, the anti-freeze pump stays fully operational. Thanks to the force of the flowing water, floating ice is effectively contained outside the 20m x 10m anti-freeze zone, protecting the pump boat from potential collisions with drifting ice.

　　2. The return pump boat aeration anti-freeze system features a DN100 aeration main pipe installed around the perimeter of the return pump boat, with DN25 aeration branch pipes arranged at regular intervals along the main pipe. Each branch pipe is equipped with multiple small 10mm aeration holes. The aeration pipelines are connected to an air blower compartment inside the boat hull, where a Roots blower provides the aeration power—hence the system is referred to as the "blower aeration system." Primarily, it consists of a Roots blower, air distribution pipelines, and the aeration devices themselves.

　　The aeration pipeline is installed 400 mm above the ship's bottom and remains submerged beneath the water surface at all times. When the river begins to freeze, simply turn on the blower power supply to deliver air into the aeration pipe, causing dense bubbles to continuously emerge from the 10-mm aeration holes positioned around the ship’s hull—effectively preventing the water surface from icing over. This system can operate independently, but it works even more efficiently when paired with an anti-freeze submersible pump. The lower level features the submersible pump-based anti-freeze system, while the upper level utilizes the aeration-based anti-freeze system.

　　Two sets of antifreeze systems provide double insurance, further preventing the water surface from freezing even in extremely cold weather and ensuring the safe operation of the water intake pump boat.

　　To address the extreme cold temperatures during winter, the pump room’s interior is equipped with 75mm rockwool sandwich panels for its surrounding walls, and double-layer tempered glass windows are installed to enhance insulation, ensuring the internal temperature stays above 0°C. This ensures that the return pumps can continue operating smoothly even in frigid weather conditions. Additionally, heating considerations have been made for the winter-shift personnel; the pump room can be fitted with air conditioning units or electric heaters to provide a comfortable working environment for those on duty.