Connect the bolt and the block first, then connect it to the penstock and take the nut with it without locking. Check the position of the penstock with the bolts. Then spot weld the block (one or two points to ensure that the bolt and penstock will not fall down when they are removed). Remove …
Development of butterfly valves In the 1930s, the United States invented the butterfly valve, and it was introduced to Japan in the 1950s. It was only widely used in Japan in the 1960s, and it was promoted in China after the 1970s. At present, butterfly valves above DN300 mm have gradually replaced gate valves …
For a long time, the general gate valves used in the market generally have water leakage or rust. Our company uses European high-tech rubber and valve manufacturing technology to produce elastic seat seal gate valves, which overcomes the defects of general gate valves such as poor sealing and rust. The sealing gate valve uses the compensation function of the elastic gate plate to produce a small amount of elastic deformation to achieve a good sealing effect. The valve has the obvious advantages of light switch, reliable sealing, good elastic memory and service life. It can be widely used as a regulating and intercepting device on the pipelines of tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system, etc.
The penstock is used to close and open the control facility of the water discharge (discharge) channel. An important part of hydraulic structures can ，be used to intercept water flow, control water level, adjust the flow, discharge sediment, and float, etc. Penstocks are widely used in waterworks, sewage plants, petroleum, chemical, metallurgy, environmental protection, electric power, irrigation and drainage, drainage, ponds and weirs, rivers, and other projects to cut off, adjust flow, and control water level. So how to install and maintain penstocks and hoisting equipment? Let me give you a brief introduction:
What are the classification and structure of the penstock? The penstock is a control facility used to close and open the water discharge (discharge) channel. Gates are an important part of hydraulic structures, which can be used to intercept water flow, control water level, regulate flow, discharge sediment, and float, etc. The following will introduce the classification and structure of the gate in detail;
A gate valve refers to a valve in which the closing member (gate) moves along the vertical direction of the centerline of the passage.
The gate valve is mainly used for cutting off in the pipeline.
Gate valve is a widely used valve. Generally, cut-off devices with a diameter of DN≥50mm are selected for use, and sometimes gate valves are also used for cut-off devices with a small diameter.
A pneumatic valve is an executive unit in a fluid control system in the industrial automation field. It is a combination of a pneumatic actuator and a valve, and when the actuator is driven by the air source pressure to control the operation of the valve. This chapter mainly describes It is a commonly used rotary switch type pneumatic valve.
There are mainly the following types of valves commonly used in sugar factories. 1. Globe valve (ball valve, ball valve) Because the shut-off valve can accurately adjust the flow rate and cut off the channel tightly, it is the main opening and closing device on the sugar liquid and steam pipelines, and can also be …