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Select liquid flow control based on flow characteristics - focus on microfluidic control technology
With the development of modern industry, liquid flow control plays an increasingly important role in our lives, and we will consider its use and performance when choosing it, in addition to the valve The shape of the opening and closing member and the internal flow passage allows the flow control to have a certain flow characteristic. So we must take this into account when choosing.
Select liquid flow control based on flow characteristics:
1 commutating split, according to the need of commutating split, this valve can have three or more passages, suitable for the choice of plug valve and ball valve. Most of the valves used for commutating splits use this type of flow control. In some cases, other types of flow control, which are suitably interconnected with two or more, can also be used as a commutation shunt for the medium.
2 Medium with suspended particles. If the medium has suspended particles, it is most suitable to use a valve with a wiping action of its opening and closing member along the sealing surface. 3 cut off and turn on the medium, usually choose a valve with a small flow resistance and a straight flow path. This type of flow control is less preferred because the flow resistance is higher than other flow control. However, closed flow control is also available where higher flow resistance is allowed.
4 control the flow, usually choose flow control that is easy to adjust the flow. Such as adjustment, throttling, plunger, because its flow control size is proportional to the stroke of the opening and closing member. Rotary and flexing valve bodies are also available for throttling control, but are typically only available in a limited range of valve sizes.
Since most of the time, it is common to use a valve flap shape that changes the liquid flow control for throttling. However, it is extremely unreasonable to use this method to achieve throttling. Because the flow rate of the medium in the pipeline is high, the sealing surface is easily washed away and loses the sealing effect. Pay attention to these when we choose.
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