vacuum equipment

Different vacuum systems require different degrees of vacuum. Therefore, a set of vacuum units must be used to complete, that is, the vacuum pumps working in different pressure ranges are connected in series. The vacuum pump on the high-vacuum side can achieve the vacuum required by the system, while the vacuum pump on the low-vacuum side is directly exhausted to the atmosphere. Obviously, the simplest vacuum unit is a straight-line vacuum pump. However, high-vacuum systems generally require three-stage units, and medium-vacuum systems generally require two-stage units. A high vacuum pump and a low vacuum pump are difficult to form an effective high vacuum unit. There are several reasons for this. Traffic continuity is one of them. High-vacuum pumps have the limitation of the pressure resistance of the fore stage, that is, the fore stage is higher than a certain pressure, the pump cannot work normally. When the current stage pump reaches this critical pressure, the pump

During the operation of Roots vacuum unit, friction may be caused by improper operation of workers, which is not good for our machine. In order to avoid this phenomenon, we will take certain measures to solve it. What are the specific steps? When the wear size of the transmission part is relatively small, the polymer composite repair material can be used on site without disassembly and repair, which not only avoids machining, but also does not have the thermal stress and heat effect of repair welding, and the repair thickness is not limited. At the same time, the wear resistance of the product and the fallback of the metal material are not provided, which ensures 100% contact and coordination of the repair part and reduces the impact vibration of the equipment, Avoid the possibility of wear, and greatly extend the service life of equipment components (including bearings), save a lot of downtime for enterprises, and create huge economic value. Its suction port is connecte

Roots vacuum unit has a kind of filtering function in use, which is inseparable from the role of filter element. In order to better realize the filtering function and improve the efficiency of the equipment, it is also necessary to regularly maintain the filter element. Refer to the following for specific maintenance methods. The filter element of Roots vacuum unit shall be inspected frequently to avoid failure affecting the whole equipment. After the filter element is used for a period of time, it is strongly recommended to replace it. It can't be used for any other purpose, so that not only the good filtering effect can't be achieved, but also the operation of the machine will be affected. Generally, before opening roots vacuum unit, we will check whether the parts are complete and whether there is any fault, so as to avoid problems in use and affect the working efficiency. For filter element, we can open the machine to see the driving current after all the par

The influence of the position of suction and exhaust hole on pump performance of liquid ring vacuum pump was studied. Through technical renovation project, the concept of critical compression ratio of liquid ring pump and its influence on pump performance are theoretically expounded, and the relationship between suction and exhaust hole area and opening position of liquid ring pump and compression ratio is analyzed. When the operating condition of the pump exceeds the critical compression ratio, how to reduce the flow loss of the pump to the minimum by modifying the internal structure and how to achieve high performance of the pump have important reference significance for future project application and system transformation. liquid ring pump as a varactor type gas conveying equipment, gas can not only as a vacuum pump suction as well as make the system get the negative pressure, and can be used as compressor compressed gas so as to make the system get positive pressure

The temperature rise of Roots vacuum unit refers to the difference between the maximum temperature and the room temperature measured at all parts of the pump surface under the condition of stable operation of limit vacuum or rated vacuum (direct discharge atmosphere roots vacuum unit). There is no limit to the types of thermometers used to measure temperature rise, but they should have a measurement accuracy of ± 1 ℃. When marking the temperature rise, the room temperature at that time and the cooling conditions of the pump, including the cooling method, shall be indicated at the same time. If it is water-cooled, the temperature of water in and out shall be indicated. The outlet pressure of Roots vacuum unit refers to the pressure measured near the exhaust port under the condition of stable operation of Roots vacuum unit, corresponding to a certain inlet pressure value. The test of the outlet pressure can be carried out at the same time with the measurement of the pumping