vacuum equipment

Always committed to the upgrading and transformation of liangbang pump and valve enterprises, Yongjia is the early origin of China's liangbang pump and valve industry. In the past, factors such as single product structure, small enterprise scale, no brand, poor information, and weak technical innovation ability have become the bottleneck restricting the rapid development of liangbang pump valve industry. "After more than 20 years of development, Yongjia liangbang pump valve gradually improves its quality in all aspects, and strives to seek new breakthroughs in the development of liangbang pump valve industry. At present, liangbang pump and valve industry production and manufacturing base has been established, which integrates product manufacturing, technological innovation, quality inspection, enterprise gathering and talent training. It has participated in the construction of several key projects, which has changed the overall pattern of China's liangbang pum...

What sealing requirements do vacuum pumps have to prevent oil leakage People who have used water ring vacuum pump know that the sealing of the equipment is a very important part of the process of use, must not be careless. If the sealing is done well, the vacuum drop can be avoided during use. If the seal work is perfunctory, then at some time the equipment will have a failure problem, resulting in its damage, not normal use, affecting our work efficiency. Under its working pressure, the vacuum pump should drain all the gas produced in the process of vacuum equipment in time. Correct combination of vacuum pumps. Because the vacuum pump has selective pumping, therefore, sometimes choose a pump can not meet the requirements of pumping, need several kinds of pump combination, complement each other to meet the requirements of pumping. For example, titanium sublimation pump has a high pumping speed on hydrogen, but cannot pump helium, while triode sputtering ion pump, (or di...

First of all, in terms of the daily maintenance of the complete vacuum pump equipment, for the operators, to a large extent, they should be familiar with different types of instruments, pumps and various parts of the complete vacuum pump equipment. In fact, we should pay attention to reading carefully and understand different kinds of instructions. Then, the cooling water pressure on the whole set of vacuum pump equipment should be kept between 0.1 and 0.2 MPa directly. Next, we should pay attention to the outlet water temperature of the vacuum pump which should be kept at ≤ 45 ℃. For its own compressed air pressure, in fact, it should be between 0.4 and 0.5 MPa. Moreover, before starting up each furnace of the complete vacuum pump equipment, we should pay attention to check the capacity of the protective gas cylinder. In this regard, to a large extent, it can avoid insufficient gas filling and replace the gas cylinder. If there is any abnormal situation after startup, i...

Fire pump is an important equipment for fire fighting and rescue. According to our habitual thinking, all important equipment should be equipped with overload protection. However, according to article 8.6.3.5 and article 1 0.2.2.4 (3) of the civil regulation, "for distribution lines whose sudden power failure will lead to greater losses than those caused by over-load, over-load protective appliances (such as power supply lines of fire pumps) that cut off the circuit shall not be installed, but over-load alarm appliances shall be installed. According to this regulation, the fire pump should not be equipped with overload protection cut-off device. This is mainly in view of the fire, the need to ensure the fire water, because the pump overload may cause line, equipment loss compared with the fire loss is negligible. But in engineering practice, and even in some construction standard atlas, including college textbooks introduced in fire pump electrical diagram, fire pump ...

Today, the centrifugal pump manufacturer Jian'an small edition briefly describes the working principle of centrifugal pump for you. Before starting, the liquid shall be poured into the pump body and suction pipe from the type pipe. When the impeller rotates very fast, the liquid in the impeller also follows the rotation under the promotion of the blade in the impeller, so that the liquid gets the centripetal force, and moves outward from the impeller management center along the blade passage, and then is thrown out from the beam end of the blade into the worm chamber or outer diffusion tube (or guide wheel) in the pump body. When the liquid flows into the outer diffusion tube, due to the gradual expansion of the total cross-sectional area of the flowing liquid and the slow reduction of the water flow, part of the mechanical energy is converted into the static energy head, so that the working pressure is increased, and finally it is pressed out from the discharge tub...

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...