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204 Basic knowledge of mechanical seal 1. Basic concept of mechanical seal: mechanical seal refers to 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 the auxiliary seal, to keep sticking and sliding. The auxiliary seal of compensation ring is metal bellows, which is called bellows machine
Published on: July 2, 2019 Clicks: 193
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Service life and reliability of mechanical seals for kettles I Service life of mechanical seals Mechanical seals rarely fail due to long-term wear and tear, and other factors often promote premature failure of pump mechanical seals. Therefore, the life of the seal should be regarded as a statistical quantity of the kettle mechanical seal, and it is difficult to obtain an accurate value. For example, mechanical seals used in some sewage pumps, one
Published on: June 6, 2019 Clicks: 140
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Several mistakes should be noticed when the kettle mechanical seal manufacturer overhauls! 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: March 23, 2019 Number of hits: 188
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204 The mechanical seal manufacturer analyzed the causes of the penetration. 1) Leakage caused by pressure. 1. Fault 1: Mechanical seal leakage caused by high pressure and pressure wave. Cause: The specific pressure of the spring and the total specific pressure are too large. When the pressure in the seal cavity exceeds 3MPa, the specific pressure of the seal face will be too large, the liquid film will be difficult to form, the seal face will be severely worn, and the heat generation will increase,
Published on: March 2, 2019 Number of hits: 152
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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: 574
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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 Number of hits: 225
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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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Types of new mechanical seal technologies of mechanical seal manufacturers New mechanical seal technologies with 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: 503
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How to repair the mechanical seal used by the mechanical seal manufacturer? The maintenance mechanical seal of mechanical seal is a sealing equipment composed of two sealing elements (static ring and dynamic ring) perpendicular to the shaft, bright, and the flat and straight appearance of light mechanical seal for pump, which fit each other and roll relatively. It depends on the pressure of the sealing medium to produce proper results on the touch surface (end face) of the rotating rotating ring and stationary ring
Published on: November 12, 2018 Number of hits: 472
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Correct installation steps of kettle mechanical seal 1. Check whether the model and specification of the mechanical seal to be installed are correct. 2. Check whether the dimensional accuracy, geometric accuracy and interrelation of the parts related to the installation of the main engine and mechanical seal meet the technical requirements. It mainly includes the following aspects: (1) The radial runout tolerance of the shaft (or shaft sleeve) where the mechanical seal is installed（
Published on: November 12, 2018 Clicks: 1538
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The sealing equipment of the reaction kettle The sealing equipment used in the reaction kettle is a dynamic sealing structure, which mainly includes two types: packing seal and mechanical seal. The mechanical seal for kettle is compared with the stuffing box seal. The seal is firm, and the mechanical seal will not leak or rarely leak during a long service period. Clean, no dead corner, can avoid contamination of miscellaneous bacteria.
Published on: November 11, 2018 Number of hits: 451
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Common sense for mechanical seal manufacturers to choose various seals - the density of epoxy modified single component product 1 varies from 1.1 to 2.8, and the curing time is 50 degrees/4 hours or 110 degrees/30 minutes or 110 degrees/50 minutes; 2. It has moderate thixotropy, can cover and wrap electronic components when draped on the circuit board, and the glue can level itself,
Published on: November 10, 2018 Clicks: 448
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Key points for overall inspection and installation of mechanical seal for kettle: 1. Check whether the model and specification of the mechanical seal to be installed are correct. 2. Check whether the dimensional accuracy, geometric accuracy and interrelation of the parts related to the installation of the main engine and mechanical seal meet the technical requirements. It mainly includes the following aspects: (1) The radial runout of the shaft (or shaft sleeve) where the mechanical seal is installed
Published on: November 6, 2018 Number of hits: 341
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Requirements for installation and use of mechanical seal manufacturer 1) The mechanical seal with suitable model and material for light mechanical seal used for pump must be selected according to working conditions and host conditions to ensure normal operation and service life of mechanical seal. 2) The radial runout tolerance of the medium-sized mechanical seal for the pump with the shaft (sleeve) installed at the mechanical seal shall be ≤ 0.04mm, and the axial runout of the rotor shall be ≤ 0.1
Published on: November 4, 2018 Clicks: 114
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This paper introduces the form of mechanical seal for kettle and how to deal with the problem correctly in case of failure. The kettle mechanical seals are divided into the following six types: 201 type single end face single spring unbalanced seal, 202 type single end face multi spring unbalanced seal, 203 type single end face single spring balanced seal, 204 type single end face multi spring balanced seal, 205 type double end face
Published on: November 4, 2018 Number of hits: 165
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