Cast iron knife gate valve - sludge slurry

Cast iron knife gate valve - sludge slurry

Its scope of use has expanded from ordinary fields to a wider range of industries, from mining and power plantsCoal selectionFrom discharging gangue and slag to urban sewage treatment, it has evolved from generalindustrial pipelineDeveloped into specialized pipeline systems for food, hygiene, medicine, and other fields.

Cast iron knife gate valve - sludge slurryalso calledKnife type gate valveKnife Gategate valve、Slurry valveMud valve, its opening and closing component is a gate, and the direction of movement of the gate is perpendicular to the direction of the fluidCutting fibersThe blade shaped gate of the material is used to cut off the medium, and the gate has two sealing surfaces,Common modesgate valveThe two sealing surfaces of the wedge-shaped gate valve form a wedge shape, and the wedge angle varies with the valve parameters, usually 5 °. The gate plate of the wedge-shaped knife gate valve can be made as a whole, called a rigid gate plate; It can also be made into a gate that can produce slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This type of gate is called an elastic gate. The valve body actually does not have a chamber, and the gate rises and falls in the side guide groove, and is tightly pressed by the bottom protrusionvalve seatWhen achieving high medium sealing performance, an O-shaped sealing valve seat can be used to achieve bidirectional sealing. Knife gate valve has a small installation space, low working pressure, is not easy to accumulate debris, and is relatively low in price.

Knife type gate valveWhen closed, the sealing surface can be sealed solely by the pressure of the medium, that is, the sealing surface of the gate is pressed against the valve seat on the other side by the pressure of the medium to ensure the sealing of the sealing surface. This is called self sealing. Most gate valves use forced sealing, that is, when the valve is closed, the gate is forced against the valve seat by external force to ensure the sealing performance of the sealing surface. This type of valve should generally be installed vertically in pipelines.

Drive mode of knife type gate valve: Manual,sprocketElectric, pneumatic, hydraulic,bevel gearElectric control hydraulic and pneumatic hydraulic driving methods. Knife type gate valve appearance: two types: open stem and concealed stem. Knife gate valve material: cast ironcast steelCarbon steel, stainless steel, fluorine lining, etc.

Knife shaped gate valve sealingSealed with various materials such as hard seal, soft seal, single-sided seal, double-sided seal, etc.

The ultra-thin knife gate valve solves the problem of ordinary problems with its advantages of small volume, low flow resistance, light weight, easy installation, and easy disassemblygate valve、Flat gate valve、ball valve、globe valveThecontrol valve、butterfly valveDifficult problems such as high flow resistance, heavy weight, difficult installation, and large footprint of similar valves. After the emergence of knife gate valves, a large number of universal cut-off valves andAdjust valveIt has been replaced by it. The United States and Japan have a large usage of knife gate valves.

The scope of use of knife gate valve is：

1. Mining, coal washing, and steel industry - used for washing coal pipelines, slag slurry pipelines, and ash discharge pipelines;

2. Purification device - used for wastewater, mud, dirt and other pollutantssuspended solidsClear water;

3.paper industry--Used for any concentrationpulpMixing materials with water;

4. Power plant ash removal - used for ash slurry