Siphon Drain

Principle:

A simple device that uses liquid gravity and atmospheric pressure to move a liquid over a higher obstacle to a lower destination. First put the short wall of the siphon tube filled with liquid into the storage tank, then open the valve 3 at the outlet of the long arm, the liquid will flow out of the tube due to the action of gravity, causing a negative pressure at the upper end of the tube, and the liquid in the storage tank will be affected by the atmosphere. The action of pressure flows into the short arm. In this way, the liquid will continue to flow automatically until the liquid level in the tank drops to the entrance of the siphon. The method of filling the siphon with liquid is mainly manual, and a vacuum pump can also be used. First close valves 3 and 5, so that the liquid is sucked up by valve 4 until it fills both arms. When the liquid rises to the observation cover, close the valve 4 and open the valve 3, the siphon will work, and the liquid will flow out. If you want to stop the delivery, open the valve 5 to make the siphon pipe communicate with the atmosphere, and there will be no siphon effect.

use:

The siphon tube includes: a siphon hose and a spherical air bag, which is characterized in that: the siphon hose is cut from the middle and divided into two parts, one end of the spherical air bag is connected with one end of one of the siphon hoses, and the other end of the spherical air bag is connected. One end is connected with one end of the other siphon hose, so that the ball-shaped air bag is in the middle of the whole siphon tube. When siphoning is required, one end of the siphon tube is inserted into the liquid, and the other end of the hose outside the liquid is folded into a dead bend to form a seal, and then the air bag is squeezed, and the air in the hose will run out from the liquid end. After releasing the air bag, the air pressure Naturally, the liquid is pressed into the hose to form a siphon phenomenon, which is not only more convenient than blowing and sucking with the mouth, but also avoids the possibility of touching the hose with the mouth and better protects ourselves.

Siphon phenomenon:

The siphon phenomenon is caused by the gravitational force and potential energy difference between liquid molecules, that is, the water column pressure difference is used to make the water rise and then flow to a lower place. Since the water surface of the nozzle is subjected to different atmospheric pressures, the water will flow from the side with higher pressure to the side with lower pressure, until the atmospheric pressure on both sides is equal, the water surface in the container becomes the same height, and the water will stop flowing. The water in the container can be pumped out in no time.

The siphon is an ancient invention of human beings. As early as the 1st century BC, someone created a peculiar siphon.

In fact, siphoning is not entirely caused by atmospheric pressure, and siphoning can also occur in a vacuum. The force that lifts the liquid upward is the cohesive force between the molecules of the liquid. When the siphon phenomenon occurs, the liquid will continue to flow in one direction because more liquid flows out of the tube than the liquid flowing into the tube, and the gravity on both sides is unbalanced. As the liquid flows into the tube, the higher the pressure, the lower the pressure. If the tube where the liquid rises is very high, the pressure will drop to the point where bubbles (composed of air or other components of gas) are created in the tube, and the height of the siphon is determined by the generation of bubbles, because the bubbles will break the liquid, and the two bubbles will The force between the gas molecules at the ends is reduced to 0, which destroys the siphon effect, so the tube must be filled with water. Under normal atmospheric pressure, the siphon works better than in a vacuum, because the atmospheric pressure on both sides of the nozzle increases the pressure inside the entire siphon.

Product Description:

1. The product implementation standard is: CJ/T189-2007 "Steel mesh skeleton plastic (polyethylene) composite pipe and pipe fittings".

2. Composite pipes of the same specification and different pressure levels have different wire diameters and grid parameters.

3. The nominal pressure is the maximum working pressure of the pipe to transport the water medium at 20°C. If the medium temperature changes, it should be corrected according to the "nominal pressure correction coefficient value".

4. The color of the pipe is generally black, the gas pipe is black or blue, and the black pipe should have a blue color bar.

5. Pipe fixed length: 6m, 12m, can also be determined according to user requirements and transportation conditions

Performance comparison of steel mesh skeleton plastic composite pipe and welded steel skeleton plastic composite pipe:

First: the production process of steel mesh skeleton plastic composite pipe and welded steel skeleton plastic composite pipe is different

1. Composite structure. The welded steel skeleton plastic composite pipe is based on ordinary carbon steel wire. Although the steel wire is relatively thick, the tensile strength is only 400Mpa, the process is complicated, and the product quality fluctuates greatly. Steel mesh skeleton plastic (composite pipe, high-strength steel wire (above 1950Mpa) is used as the base material, and the steel wire is wound on the pipe in a 54.7-degree oblique direction, so that the pipe can be axially and The force is uniformly distributed in the circumferential direction, and a high safety factor is adopted when determining the diameter and density of the steel wire.

2. Water channeling on the end face. Welded steel skeleton plastic composite pipe, due to the inevitable gap between the PE material pipe and the steel plate, when the pipe is cut, the end face is sealed, but the seal is easy to fall off when heated with electrofusion pipe fittings. After installation, the medium will enter the gap between the steel plate and the plastic, resulting in a decrease in the pressure bearing capacity of the entire pipeline system. As a result, the pipe will be damaged at low pressure, resulting in the failure of the pipe.

Second: the product standards of steel mesh skeleton plastic composite pipe and welded steel skeleton plastic composite pipe are different. The steel mesh skeleton plastic composite pipe implements CJ/T189-2007, and the steel skeleton composite pipe implements the CJ/T123-2004 standard;

Third: The steel skeleton composite pipe can be overhead, but the steel mesh composite pipe cannot be overhead.