The working principle and structure characteristic of soft seal gate valve
The soft sealing gate valve has the new type of anti-wear, anti-corrosion and anti-scale gate valve, its production and processing technology is simple and clear, the sealing characteristics are good, the application time is long.Below is a description of the principle and construction characteristics of soft-sealed gate valves.
Principle of soft seal gate valve
After the electric-hydraulic reversing valve A is connected to the power supply at the working port, the pump starts the pressure change, the cylinder piston rod goes up to promote the valve stem to rise, the valve stem is connected with the gate plate for screws, and then the gate plate is promoted to exercise, beyond the open aspect ratio, at this time, the magnetic induction switch sends feedback data signal to the command desk, and the gate valve is opened.
After the electric-hydraulic reversing valve B is connected to the power supply at the working port, the pump starts the pressure change, the cylinder piston rod goes down to push the valve stem down, and then pushes the gate board to exercise, beyond the open aspect ratio, at this time, the magnetic induction switch sends feedback data signal to the command desk, and the gate valve is turned off.Manual operation during adjustment.
Construction characteristics of soft-sealed gate valves
1. The design scheme of the body cavity enables the raw materials to have self-metabolism effect under the driving force effect, and there is no stagnation and obstruction in the cavity.
2. The gate valve of the all-safe passage has low pressure on dry ash without blocking gas.
3, loading yellow make the gate in hot expansion and cold contraction to carry out damage adjustment, to maintain closure and resist back pressure.
4, metal materials and metal materials as sealing pair, wear resistant available temperature coverage.
5. When installed vertically, there is a ash groove at the bottom of the inlet and outlet of the soft sealing gate valve, and there are two permeable holes in the sealing outer design of the gate valve.The bottom of the oil circuit board is designed with a detachable through hole. When the dust accumulates to a certain level in the oil circuit board bottom cavity, open all through covers. If the dust accumulates on time, the problem of dust accumulation in the valve cavity can be solved.
6, when the horizontal installation of soft sealing gate valve inlet and outlet nipple design scheme into a gradual shape, in addition to the design of a lot of slag cleaning groove, shaped pipe appearance, to promote dry ash no friction resistance, slag cleaning.
7. There is a hard sealing structure between the gate plate of soft-sealed gate valve and high-pressure gate valve. Every time the power switch of the parallel surface type, the edge is used to carry out scraping and grinding on the abrupt face of high-pressure gate valve, so as to maintain the reasonable sealing of the gate plate and high-pressure gate valve and prevent scaling.
