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The mechanical seal of mechanical equipment accounts for 80% - 85% of the total number of dynamic seals in pump equipment. Among the pump failures, mechanical seal failures account for about half of the total maintenance workload. It can be seen that the position of mechanical seal in pump maintenance. Because the medium conveyed by the pump is very different and the process conditions are different, the selection and maintenance of mechanical seal by understanding these conditions
Published on: March 2, 2019 Clicks: 573
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Cautions for installation of kettle mechanical seal Mechanical seal definition Mechanical seal is a device used to solve the sealing between rotating shaft and engine body. The device is composed of at least one pair of end faces perpendicular to the rotating shaft, which are kept stuck and relatively sliding under the cooperation of fluid pressure, elastic force (or magnetic force) of compensation mechanism and auxiliary seal to prevent fluid leakage. Structure description
Published on: March 2, 2019 Number of hits: 456
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Taking the oil refining industry as an example, at present, domestic and foreign high-temperature hot oil pumps generally use contact bellows single end mechanical seals. The average service life of domestic bellows mechanical seals is about one year, and that of imported bellows mechanical seals can be more than two years. However, various flushing and cooling measures must be taken on the base wood (Figure 9-1) to reduce friction temperature rise and prevent coking, heat cracking Bellows lose elasticity
Published on: March 2, 2019 Number of hits: 540
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The requirements for mechanical seals for kettles are generally divided into two parts: liquid seal (this issue focuses on analysis) and gas seal (that is, dry gas seal, which will be summarized later and pushed to everyone). Liquid seal is a mechanical seal designed for sealing liquid. In fact, the liquid film between seal faces is very small - equivalent to 20 parts per million
Published on: March 1, 2019 Clicks: 181
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204 The mechanical seal manufacturer introduces basic knowledge 1. The basic concept of mechanical seal: mechanical seal is a device to prevent fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, and with the cooperation of auxiliary seals, to keep fit and relatively slide. The auxiliary seal of compensation ring is metal bellows
Published on: February 19, 2019 Clicks: 223
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Technical requirements for the use of mechanical seal for kettle The seal ring is the general name of dynamic ring and static ring (the same below), and is the main component of mechanical seal. To a great extent, seal ring determines the service performance and life of mechanical seal, so some requirements are put forward for it. There is enough strength and stiffness to prevent damage under working conditions (such as pressure, temperature and sliding speed), and deformation should be as far as possible
Published on: February 16, 2019 Clicks: 164
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In order to meet the needs of the company's development, establish a good image of the company, and meet customers' understanding of the company's products and services through the network, the website of Dongtai Guangming Mechanical Seal Co., Ltd. was officially launched on January 24, 2019, which marks a solid step in the informatization construction of Dongtai Guangming Mechanical Seal Co., Ltd. Fresh and lively layout and website structure
Published on: January 24, 2019 Number of hits: 94
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What are the requirements of gear oil pump for mechanical seal? Mechanical seal, also known as mechanical seal, is a dynamic seal for rotating shaft. Mechanical seal has reliable performance, small leakage, long service life and low power consumption. It does not need frequent maintenance, and can adapt to production process automation and high temperature, low temperature, high pressure, vacuum,
Published on: November 29, 2018 Clicks: 492
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204 What is the relationship between mechanical seal and evacuation? According to the statistics of China's petrochemical industry, more than 80% of centrifugal pumps use mechanical seals. Due to the different working conditions of the mechanical seals of centrifugal pumps, material leakage often occurs in the process of conveying materials, polluting the environment and wasting energy. Mechanical seal is one of the main wearing parts of centrifugal pump, and pump failure
Published on: November 29, 2018 Clicks: 391
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Use of mechanical seal for kettle 1. Before normal use, operate under normal pressure, and observe whether the temperature rise of the sealing part is normal and whether there is leakage. If there is slight leakage, run in for a period of time to make the end face fit more evenly until the leakage gradually reduces to normal. If the leakage does not decrease after 1-3 hours of operation, stop the machine for inspection. 2. Main
Published on: November 28, 2018 Clicks: 177
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204 How can the mechanical seal manufacturer tell you to play a sealing role? 1. Push type mechanical seal and non push type mechanical seal Push type mechanical seal refers to the mechanical seal that the auxiliary seal is pushed mechanically along the shaft or shaft sleeve to compensate for the wear of the sealing surface, which is usually referred to as spring pressed mechanical seal. Non push type mechanical seal is used for auxiliary sealing
Published on: November 28, 2018 Number of hits: 159
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1. Preface: Kettle machinery is an important system equipment for industrial production. If leakage occurs in the production and application phase, it will have a negative impact on product quality, and will also emit toxic, explosive and flammable dangerous gases, posing a significant hazard to the ecological environment and the plant system itself. If the kettle machinery is overhauled for many times, the materials need to be transferred out and necessary
Published on: November 26, 2018 Number of hits: 150
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Types of new mechanical seal technologies of mechanical seal manufacturers The new technologies of various mechanical seals using new materials and processes are developing rapidly, including the following new mechanical seal technologies. In recent years, the grooved seal technology on the sealing face of the mechanical seal has opened a variety of grooves to produce hydrostatic and dynamic pressure effects, which is still being updated. Zero leakage sealing technology
Published on: November 25, 2018 Clicks: 502
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What are the key points of using mechanical seals for kettles? In the pump parts, mechanical seal is a very important part, and mechanical seal is also a vulnerable part. If the mechanical seal is damaged, the pump body will leak. If a direct coupled pump is used, the motor will be damaged once the medium in the pump body penetrates into the motor. Therefore, the quality of mechanical seals is crucial. want
Published on: November 23, 2018 Clicks: 153
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204 What are some mistakes that should be paid attention to during the maintenance of mechanical seals? 1. The greater the spring compression, the better the sealing effect. In fact, the spring compression is too large, which can lead to rapid wear and instant burning of the friction pair; Excessive compression makes the spring lose the ability to adjust the end face of the moving ring, leading to seal failure. 2. The tighter the dynamic ring seal diagram, the better. The driving ring seal ring is too tight
Published on: November 21, 2018 Clicks: 157
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