The Importance of Negative Pressure Suction in the Consulting Room
1. Avoid cross infection
During the treatment, a spray cloud will be generated, which will affect the vision of the working area, and the bacteria, viruses and other pollutants in the spray cloud will bring the risk of cross-infection to medical staff.
2. Negative pressure suction can free patients from the trouble of swallowing reaction, allowing patients to receive treatment comfortably, which also avoids frequent interruptions in the treatment process, thereby improving the clinic's work efficiency and patient satisfaction.
Several forms of negative pressure generation
1. Air negative pressure: Air negative pressure, that is, what we usually call positive pressure to negative pressure, the process is relatively cumbersome, and the effect is not good. It belongs to an early application method, and it has been gradually eliminated now.
The compressed air consumption of pneumatic suction is high: about 60-120l/min. The suction performance is low: about 120-150l/min. Insufficient suction will cause cross-infection among medical staff.
The negative pressure generator that generates negative pressure with gas is called air jet valve for short.
The structure and principle of the air jet valve is basically the same as that of the water jet valve, which uses the rapid flow of air in the valve core to generate a pressure difference to drive the negative pressure. There are also many defects in the air jet valve. Since it relies on the air from the compressor to generate negative pressure, it will increase the load on the compressor. Make the compressor vulnerable to damage and shorten life. When the doctor grinds teeth with a fast machine and uses negative pressure at the same time, the negative pressure will cause the suction to become weak due to unstable air supply. Moreover, the compressor cannot work continuously for a long time, so its jet valve cannot provide negative pressure for doctors for a long time. In addition, when the jet valve discharges sewage, there is air pressure, and the bacteria and dirt deposited in the sewer will be blown up. These bacteria will rise to the air in the consulting room along with the air in the washbasin and floor drain, causing secondary pollution.
2. Water negative pressure: Water negative pressure is what we call a water circulation pump. Similar to air negative pressure, negative pressure is generated by the high-speed flow of water.
The characteristics of water negative pressure: the structure is complex, and it is inconvenient to repair after a problem occurs; the water consumption is large, because there are pollutants in the water, it cannot be recycled, the investment is large and water resources are wasted; the negative pressure is limited, and the size of the negative pressure cannot be adjusted;
A negative pressure generator that generates negative pressure with water is referred to as a water jet valve. :
The water jet valve has 3 connecting holes which are water inlet, negative pressure port and sewage outlet. It relies on the flow of water from the top (water inlet) to the bottom (drainage outlet) to generate negative pressure. The physical principle is very simple. When water flows, a vacuum is formed in the valve core. At this time, a pressure difference is generated at the negative pressure port to form a suction force. There is one big flaw with water jet valves. Because it relies on the flow of water to generate negative pressure, the negative pressure will lack suction as the water supply is unstable, or cause oral pollutants to flow back. And because the aperture ratio of the negative pressure port and the valve core is smaller than that of the teaching, it is very easy to block, so the water jet valve needs frequent maintenance. In addition, the water jet valve relies on the continuous flow of water to generate negative pressure, so it consumes a lot of water.
Frequency conversion central negative pressure machine
1. Duoyimei central suction machine (wet suction) can be operated in two modes, automatic or manual.
2. German frequency conversion motor, strong suction, low noise.
3. The powerful power of 1200W can supply 1-6 dental chairs, greatly improving work efficiency.
4. The functions of each component are clear and easy to operate.
5. Anti-suck back function.
6. Save electricity and water
7. Stylish appearance, small size
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The Importance of Negative Pressure Suction in the Consulting Room
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