How to use the door and precautions
Shooting instructions
I. Overview
The door is a check valve product, mainly installed at the end of the drainage pipe to prevent external water from being poured. The material is divided into stainless steel, carbon steel, cast iron and other materials.
The product is a one-way valve installed at the outlet of the riverside drain pipe. When the tidal level of the river is higher than the outlet pipe and the pressure is greater than the pressure inside the pipe, the door panel is automatically closed to prevent the river tide from pouring into the drainage pipe. This product is developed by our company. The product is subject to Q/TF-B2771 industry technical standard; it is tested according to GB/T13927 test requirements; equipment nominal pressure (PN): 0.25-1.6Mpa; nominal diameter (DN): 200-2000mm.
Second, use
The door is suitable for overflowing and non-returning of various pipelines and water channels for water supply and drainage and sewage treatment projects. It can also be used as a variety of shaft manhole covers. It is only used for the outlet of one-way water flow.
Â
Third, the structural characteristics:
The flap has the function of positively opening and closing the flow path in the forward direction. The bonnet of the door is automatically opened or closed by the action of the water flow by the balance of the self-weight, or the external force is applied to open or close the door; the door cover is provided with a pull ring, pulling and pulling The opening angle of the cover should be greater than 60 degrees, no jamming phenomenon, the switch should be free and flexible. When the flap part is soaked in water, the internal pressure of the pipe is large, and when the reverse pressure is small, the door allows partial leakage, when the river channel When the water pressure increases, the flap will automatically close the seal.
Â
Fourth, the installation and use of the door: and precautions:
1. The door installation can be connected with the flange, and can be welded with the embedded plate or secondary casting;
2. During the use of the pontoon flap door, the specific gravity of the door sheet can be changed by injecting water or discharging water into the sealed chamber of the door sheet to achieve the good opening effect of the Zui.
3. After the door is installed, it is normal for the gap between the door and the door to be 3mm. When the door is subjected to a certain reverse pressure, the clearance will be reduced and disappear.
4. When the door is used, the flow path and sealing ring should be kept from being blocked by stones, branches and other debris, thus affecting the sealing effect.
5, often clean the accumulation of debris in the grit chamber below the door, keep the door ear hole, hinge shaft lubrication is good, open flexible.
Â
High-efficiency Embossing Machine,Automatic Ultrasonic Lace Machine,Multi-function Ultrasonic Lace Machine,Professional Lace Machine
Dongguan Jinwang Ultrasonic Equipment Co.,Ltd , https://www.jwultrasonic.com