美味人妻在线看熟妇日本在线|女人喷液抽搐高潮视频|漂亮人妻被黑人精品|理论片丰满人妻被夫侵犯|露脸熟女对白刺激|久久人妻夜夜爽|欧美丰满熟妇bbbbbb图|人妻在线干|日本人妻在|凌辱人妻电影日本,亚洲人妻和黑人,日本熟妇无遮挡吸乳视频,极品少妇潮喷

Fountain Equipment Style and shape of the formation of the key depends on the nozzle

2020-12-26
The key to the formation of the style and shape of the fountain equipment is the nozzle. If the nozzle is classified according to its composition, it is mainly divided into a single jet nozzle, a spray nozzle, a rotary nozzle, a circular nozzle and a fan-shaped nozzle, these are more conventional nozzle is also a relatively wide range of applications, such as multi-hole nozzle, deformation nozzle, suction nozzle and so on. The principle of the nozzle is very simple, different specifications of the nozzle needs the amount of water will be different, the design of the pressure difference to form the size of the water flow, and because of the different nozzle shape, the spray will have their own merits. In the control of Fountain, there are three commonly used control methods, one is the hand valve control, this control method is operated artificially, the use of hand-controlled water valve to regulate the pressure in the water pipe, thus forming different intensity of water flow. This form of control is more traditional, and the manpower required is more cumbersome, need staff to carry out accurate operation, so this form of application began to narrow the scope. The other is relay control. This control is primarily based on time, and the relay is able to control the flow of water, even the light, through artificial time settings, to achieve a custom mode, freeing people's hands. Three is the sound control, this fountain control is mainly to use voice control to operate, the equipment required from the acoustic-electric converter to power equipment are more rigorous, so the cost will be more. But in the process of operation, such a control form can play space and space will be more suitable for some large-scale Music Fountain performance. From a long-term point of view, in the process of fountain construction, businesses choose which form of control should take into account their actual situation. In addition, in the Fountain Construction, the Pool Drainage facility is also a key link, for the fountain composed of small nozzle, water quality requirements are relatively high, so also need to add some filtering system, and in the selection of drainage materials, also consider the pool material structure, waterproof material can extend the life of the pool, reduce water erosion.