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Application of steady - state card method to the measurement of hematrix emissivity of thermal control data

Application of steady - state card method to the measurement of hematrix emissivity of thermal control data

Application of steady - state card method to the measurement of hematrix emissivity of thermal control data Using the steady-state card method to design a test data hemispheric emissivity try to install, and continue to the uncertainty of its synthesis. The use of the installation of the secondary name mirror (OSR) at room temperature hemisphere emissivity to continue the test, the test results uncertainty is less than 2.00%. At the same time, the hemispheric emissivity between OSR and a new phase change data between 190 and 350K was tested using this installation. 1, At the same time, the hemispheric emissivity between OSR and a new phase change data between 190 and 350K was tested using this installation.the hemispheric emissivity between OSR and a new phase change data between 190 and 350K was tested using this installation.

17

2019

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05

What is the characteristics of the vacuum pump drive mode?

What is the characteristics of the vacuum pump drive mode?

Focus on the vacuum pump work process, the transmission is often a very important part, so every friend of these issues is also very seriously. And from the overall mode of transmission can also be noted that the actual work in the process of the characteristics are often very prominent, so I hope to be able to better grasp the characteristics, only so that people can find a more idealistic answer.

17

2019

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05

Application of rotary vane vacuum pump in paper industry

Application of rotary vane vacuum pump in paper industry

The paper industry is one of the basic industries in China. The number of domestic pulp and paper enterprises is large and widely distributed. The drive system of the old paper machine mostly adopts the drive mode of DC motor driving each drive roller shaft, which can achieve stepless speed regulation. However, due to the existence of carbon brushes, maintenance is quite troublesome. At present, vacuum pumps on the market are widely used in metallurgy, chemical industry, food, electronic coating and other industries. However, for vacuum pumps used in paper making, the work of vacuum pumps may cause large vibration during use, which affects the quality of the working environment; In addition, the installation is not conducive to the installation, causing inconvenience in operation and reducing the installation efficiency

30

2022

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12

Characteristics of vacuum pump

Characteristics of vacuum pump

(1) There is a large pumping speed in a wide pressure range; (2) The rotor has good geometric symmetry, so it has small vibration and stable operation. There is clearance between rotors and between rotors and shells, no lubrication, small friction loss, which can greatly reduce the driving power, thus achieving higher speed;

30

2022

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12

Application of Vacuum System in Oil Deacidification

Application of Vacuum System in Oil Deacidification

The following focuses on the application of vacuum system in oil and fat deacidification processing, providing reference for everyone. Various unrefined crude oils contain some free fatty acids. The process of removing free fatty acids from oils is called deacidification. The deacidification methods include alkali refining, distillation, solvent extraction and esterification. Among them, alkali refining method and distillation method are the most widely used.

30

2022

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12

Precautions for dismantling and cleaning of vacuum pump for maintenance of vacuum pump

Precautions for dismantling and cleaning of vacuum pump for maintenance of vacuum pump

Vacuum pump is a kind of equipment used to generate, improve and maintain vacuum in a closed space by various means. Vacuum pump can be defined as the equipment or equipment that uses mechanical, physical, chemical or physical chemical methods to extract air from the evacuated container to obtain vacuum. Any pump that uses mechanical movement (rolling or sliding) to obtain vacuum is called mechanical vacuum pump. After a period of use, the vacuum pump needs maintenance, and cleaning the vacuum pump is one of the things that needs to be done. Some vacuum pump users have raised a question. What are the precautions for vacuum pump disassembly and cleaning during vacuum pump maintenance?

30

2022

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12

Maintenance skills of rotary vane vacuum pump

Maintenance skills of rotary vane vacuum pump

In actual operation, we will find that there are many types of common faults of rotary vane vacuum pump, which can be divided into operation faults and performance faults. In fact, the maintenance skill of rotary vane vacuum pump is that once the vacuum pump has a failure, we need to analyze the cause of the failure, and according to this problem and reason, we can carry out appropriate maintenance of the vacuum pump. This is very critical, and we need to pay attention to it. If the failure is not caused by this reason, you can use the maintenance method corresponding to this failure cause to maintain, which may cause secondary damage to the vacuum pump. Next, I will explain the operation and maintenance of the lower rotary vane vacuum pump, as well as the maintenance methods of common faults.

30

2022

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12

Application of rotary vane vacuum pump in plastic suction machine

Application of rotary vane vacuum pump in plastic suction machine

The blister machine is a machine that absorbs thermoplastic coiled materials such as PVC, PE, PP, PET, HIPS, etc., which are heated and plasticized, into various shapes of packaging and decoration boxes, frames and other products. Using the vacuum suction generated by the vacuum pump, the heated and softened PVC, PET and other thermoplastic plastic sheets are blistered into various shapes of vacuum hoods, blister trays, bubble shells, etc. through molds.

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2022

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