To understand the relationship between rotary vane vacuum pumps and medical devices, why the two must be inseparable from each other? That must first understand the analysis of the rotary vane vacuum pump and medical equipment industry. Next by leno vacuum pump small make up to give you a simple analysis.
The use of rotary vane vacuum pump to cool and dry human plasma began to enter the market. In the following decades, the use of rotary vane vacuum pump to cool and dry long-term preservation of arteries, bones, skin, cornea and nerve tissue and other organs gradually began to develop. Because it can keep biological cells from being destroyed when it is cold dried, the organism will still have vitality after it is cold dried. After rehydration, organisms can be resurrected and replanted. With the development of medical science, other organs of the human body can be expected to be stored cold and dry for resurrection and replantation.
Vacuum drying is based on the droplet boiling temperature under vacuum conditions, that is, the physical characteristics of liquid evaporation even at low temperature. For example, in the hole position, the liquid still exists after cleaning, and it is difficult to remove by other methods, while vacuum drying can make it evaporate as quickly as the residual liquid on the workpiece surface.
Once the working chamber is occupied and sealed by the parts to be cleaned, a vacuum pump is used to vacuum the chamber at a pressure of approximately 100 mbar. The cleaning medium is pumped into the working chamber by a water pump. The vacuum chamber ensures that the cleaning fluid penetrates to the smallest cavity; for example, because of the air spacing, the jack cannot be ignored. There can be various steps in the subsequent cleaning process. This usually includes soaking and spray cleaning. Ultrasonic cleaning is sometimes used, usually following one or more cleaning cycles. When the cleaning liquid is removed, the actual vacuum drying process occurs. In this process, the pressure in the working chamber is further reduced after being pumped by the gas of the rotary vane vacuum pump. The resulting steam is sucked out of the vane vacuum pump and transferred to the exhaust pipe.
Rotary-vane vacuum pump, therefore, is of important value in medical aspects, although drying process is small, but very good role in this aspect, make the use of medical items to achieve better effect, so rotary-vane vacuum pump are applied in medical equipment has strong practicability, give full play to its role.
1. Scope of application
The 2X rotary vane vacuum pump (hereinafter referred to as the vacuum pump) is used to remove the gas in a specific sealed container.
The basic equipment that enables the vessel to obtain a certain degree of vacuum. The vacuum pump can be used directly up to 6.0×10‐2Pa or as a front stage pump for other vacuum acquisition equipment. It can be used for production, teaching and scientific research in metallurgy, chemical industry, petroleum, medicine, electric vacuum, atomic energy, textile, food, printing and dyeing and other industrial and mining enterprises, colleges and universities, and scientific research institutions.
2. Features and scope of maladjustment
Vacuum pump is made of black metal, is a more sophisticated equipment. The main working parts of the vacuum pump work in the special vacuum pump oil. Does not apply to remove oxygen content is too high, toxic, explosive, chemical effect on the vacuum pump oil or corrosion of black metal gas; Also can not be used as a compressor and pump.
2x series vane vacuum pump is mainly composed of pump body, rotor, vane, end cover, spring and so on. A rotor is mounted eccentrically in the cavity of a rotary vane vacuum pump for medical devices. The outer circle of the rotor is tangent to the inner surface of the pump cavity (there is a small gap between the two), and two rotary blades with springs are installed in the rotor groove. When rotating, centrifugal force and spring tension to make the tip of the rotor and pump cavity wall to maintain contact, the rotor rotation driven vane along the vane vacuum pump cavity wall sliding. Two rotors separate the crescent shaped space enclosed by the rotor, pump chamber and two end caps into three parts, A, B and c. when the rotor rotates in the direction of arrow, the volume of space A, which is connected with the suction port, increases gradually and is in the suction process. The volume of space C communicated with the exhaust port is gradually reduced and is in the exhaust process. The volume of living space B is also gradually reduced and is in the process of compression. As the volume of space A increases gradually (i.e., expansion) and the gas pressure decreases, the external pressure at the entrance of the rotary vane vacuum pump for medical devices is greater than that in space A, so the gas is sucked in. When space A is isolated from the suction port, namely, it is transferred to the position of space B, the gas begins to be compressed and the volume gradually shrinks, and finally it is connected with the exhaust port. When the compressed gas exceeds the exhaust pressure, the exhaust valve is pushed open by the compressed gas, and the gas is discharged into the atmosphere through the oil layer in the tank. Continuous operation of the rotary vane vacuum pump achieves the purpose of continuous air extraction. If the discharged gas passes through the airway and is transferred to another stage (low vacuum stage), it will be pumped out by the low vacuum stage and then compressed into the atmosphere by the low vacuum stage, which constitutes a two-stage rotary vane vacuum pump. At this time, the total compression ratio is borne by two stages, thus increasing the ultimate vacuum.
1. Rotary vane vacuum pump for medical devices is equipped with air ballast valve, which can remove a small amount of water vapor;
2. High ultimate vacuum of rotary vane vacuum pump;
3. Equipped with forced oil feeding, sufficient lubrication and reliable performance;
4. Equipped with automatic anti-return oil double safety device;
5. When the inlet pressure is maintained at 1.33 10Pa, it can still operate continuously;
6. No oil leakage, no oil injection and no pollution to the working environment.
Iii. Instructions for use of rotary vane vacuum pump for medical devices
1. Pay attention to oil level frequently.
2. Slowly open the valve of the rotary vane vacuum pump for medical devices after starting.
3, often pay attention to whether the operation of dongshan rotary vane vacuum pump is normal, whether there is no special sound, whether the motor overload operation.
4. Pay attention to whether the cooling water is interrupted.
5, pay attention to the pump does not exceed 40 ℃ temperature.
After 6, such as parking pump temperature drops below 5 ℃, medical apparatus and instruments with rotary vane vacuum pump in cooling water must be cleaned out.
1, Rotary vane vacuum pump must always keep clean, pump can not be placed on other objects.
2, pay attention to whether the belt is appropriate, the first half of the annual adjustment.
3. Whether the pipe joints of the rotary vane vacuum pump for medical devices leak should be eliminated in time.
Most medical devices have to go through the process of vacuum extraction to obtain better quality of products. The rotary vane vacuum pump for medical devices generally USES 5.5kw power, the maximum pumping speed is 70L/S, and the ultimate pressure is 0.06pa.
Rotary vane vacuum pump for medical devices
|Ultimate pressure(Pa)||Partial pressure||6×10ˉ²(5×10-4Torr)|
|Total pressure||2.66(2×10-2 Torr)|
|Cooling Mode||Natural cooling||Water cooling|
|Recommend solenoid valve||DDC-JQ25||DDC-JQ40||DDC-JQ40||DDC-JQ65||DDC-JQ80|
|Noise (dB A)||65||70||70||70||75||90|