2021-01-28
| The spray head is a plastic bottle that can artificially create fog. To put it simply, the high-pressure system sprays the liquid with very fine water particles. These tiny artificial mist particles can drift and suspend in the air for a long time, thus forming a white misty spectacle, much like the effect of natural mist, called spray . Spray is a mixture of tiny particles suspended in a gas (such as air). These particles may be very small drops of water or paint. The spray bottle is a very useful device. It is a good example of the basic principle of pipe pumping. The head of the spray bottle consists of only a few parts. It has a trigger, which can trigger a small water pump. The water pump is connected to a plastic tube, which sucks the cleaning liquid up from the bottom of the reservoir. This pump presses liquids into a narrow cavity and ejects them from the small holes in the spray nozzle. This hole, or nozzle, can bring the flowing liquid together into a concentrated stream of water. The only complex in this design is a hydraulic pump, but its structure is also very simple. Its main movable element is a piston, located in a cylindrical hydraulic chamber. In the hydraulic chamber, there is a small spring. In order to make the hydraulic pump run, you must first pull the wrench back to push the piston into the hydraulic chamber. The moving piston compresses the spring so that when you loosen the wrench, the piston is pushed out of the hydraulic chamber again. The two strokes of the piston in and out of the hydraulic chamber constitute a complete pump cycle. The equipment that achieves this function is called a one-way valve. The spray bottle has two check valves in its pumping system: one is located between the pump and the reservoir, and the other is located between the pump and the nozzle. Usually, the one-way valve located between the pump and the reservoir contains a small rubber ball, which is lightly placed in a small sealed cylinder. The edges of the sealing tube are angular, so the rubber ball will not fall from the sealing tube. According to the design, when you are not pumping water, the ball relies on its own gravity or the elastic force of a small spring to rest on the sealing cylinder, thereby blocking the water circulation channel. When the piston moves outward (when you loosen the wrench), the enlarged hydraulic chamber will suck the small rubber ball away from the sealing cylinder and suck up the liquid from below. Since the ball is lifted, the liquid can flow in from the reservoir unimpeded. When you press down the wrench, the external force of the flowing liquid pushes the ball back to the sealing cylinder, blocking the passage between the pump and the reservoir. Therefore, the pressurized liquid can only flow to the upper cavity. |
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浙公网安备33028102001199号
