Posted on Fri, 14 Apr 2023 05:38:25 +0000
Oil-type rotary vane vacuum pump is a very mature and reliable vacuum pump, usually also called oil pump, mechanical pump, rotary vane pump, etc. It is low-cost and can achieve a good vacuum degree. It is widely used in vacuum packaging machines, vacuum heat treatment, coating, Mass spectrometers...
Read MorePosted on Tue, 14 Mar 2023 01:42:22 +0000
Vacuum gauge of principle and measuring range Vacuum refers to the state of gas below one atmospheric pressure in a given space, which is a physical phenomenon. In vacuum technology, vacuum refers to the atmosphere. Generally, it means that part of the material in a specific space is discharged, ...
Read MorePosted on Fri, 10 Mar 2023 02:34:57 +0000
EVP DLV liquid ring vacuum pump is a high-performance two-stage vacuum pump, which is updated and adjusted on the basis of the German SIHI LPH series (and Speck VH series) two-stage liquid ring vacuum pump. Compared with the conventional 2SK series two-stage vacuum pump, its performance is more s...
Read MorePosted on Tue, 13 Sep 2022 06:17:35 +0000
In the leak detection work, to quantitatively determine the leak rate of the leak detection hole, it is necessary to correctly transfer the value of the leak rate from the gas microflow standard or the leak rate standard to the mass spectrometer leak detector. In this transfer process, the calibr...
Read MorePosted on Thu, 25 Aug 2022 02:14:26 +0000
1.Vacuum pump of overview Vacuum pumps are the main category of vacuum obtaining equipment used to obtain, improve and/or maintain a vacuum environment. A vacuum pump can be defined as a device or device that uses mechanical, physical, and chemical methods to evacuate the pumped container to obta...
Read MorePosted on Fri, 24 Jun 2022 06:40:49 +0000
When the vacuum coating machine is leaking, when the vacuum inside the coating machine drops to a certain level, such as below 0.5 mbar, spray helium gas on the suspected leak, or check the parts moved during standard maintenance. At this time, it is necessary to Someone observes the change of th...
Read MorePosted on Thu, 21 Jan 2021 05:14:55 +0000
As we all know, even matching with the standard Inlet and exhaust silencers, the noise of Roots blower is always a problem; What is known is that the main structure of acoustic enclosure is its enclosure plates. When the enclosure plates have enough sound insulation, which can block the noise of ...
Read MorePosted on Tue, 15 Dec 2020 08:09:31 +0000
The amount of moisture in wood varies with tree species, tree age, and cutting season. In order to ensure the quality of wood and wood products and extend the service life, appropriate measures must be taken to reduce the moisture (moisture content) in the wood to a certain level. To reduce the m...
Read MorePosted on Thu, 24 Sep 2020 06:18:49 +0000
The purpose is to provide a vacuum pumping device for vacuum vessels and to develop rotary vane vacuum pumps for application in sealed vessels. Why vacuum in a sealed container? Sealed containers are widely used in all aspects of life and are usually used in this type of high-sealed storage condi...
Read MorePosted on Tue, 28 Jul 2020 03:12:33 +0000
If the water ring vacuum pump works for a long time under cavitation condition, the noise and vibration of the pump will increase, and even damage the pump. Therefore, it is necessary to avoid the water ring vacuum pump working under cavitation condition. The following methods can be adopted: 1. ...
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