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How to prolong the service life of mechanical seal of centrifugal pump? Listen to what the mechanical seal manufacturer said! 1. The centrifugal pump shaft has a large displacement. During the operation of the centrifugal pump, the sealing surface of the mechanical seal needs to have a certain specific pressure. Only in this way can the role of the mechanical seal be ensured. Therefore, the spring of the mechanical seal must have a certain amount of compression
Published on: May 28, 2019 Number of hits: 156
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The mechanical seal manufacturer explained the selection of mechanical seals. According to the different working conditions and media properties, there are high temperature and low temperature resistant mechanical seals, high pressure and corrosion resistant mechanical seals, particle resistant media mechanical seals, and light hydrocarbon media mechanical seals that are easy to vaporize. Mechanical seals of different structures and materials should be selected according to different uses. Mechanical seals are widely used in various enterprises
Published on: May 18, 2019 Number of hits: 158
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The mechanical seal manufacturer explains the 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 the auxiliary seal. The auxiliary seal of compensation ring is called metal bellows
Published on: 2019-05-07 Number of hits: 161
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204 Mechanical seal fault handling Mechanical seal and other equipment cause large noise and equipment vibration due to long time mechanical movement with large torque and gear box meshing clearance. In addition, the sealing part has been operating at high speed and high temperature for a long time, and oil leakage often occurs at the sealing part. The leakage of sealing parts is caused by the following reasons: 1. leakage due to oil seal quality problems; 2、
Published on: May 1, 2019 Number of hits: 232
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The reason for the failure of mechanical seal for kettle is that the failure of mechanical seal is generally known after the occurrence of abnormal leakage, abnormal wear, abnormal torque and other phenomena. The reasons for the failure are as follows: 1. The design and selection of mechanical seal are incorrect; 2. Poor mechanical seal quality; 3. The accuracy of the machine using or installing mechanical seal cannot reach
Published on: April 26, 2019 Clicks: 154
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Precautions for kettle mechanical seal during installation 1. Pay great attention to avoid installation deviation during installation (1). Tighten the gland after alignment of the coupling. The bolts should be evenly supported to prevent the end face of the gland from deflection. Check each point with a feeler gauge, and the error should not be greater than 0.05 mm. (2) Check the fit clearance (i.e. concentricity) between the gland and the outer diameter of the shaft or shaft sleeve
Published on: April 20, 2019 Clicks: 190
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204 What are the types of mechanical seals introduced by mechanical seal manufacturers? 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 mechanical seal with auxiliary seal fixed on shaft, usually
Published on: April 13, 2019 Clicks: 392
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The mechanical seal manufacturer explained the effect, meaning and position of mechanical seal. The effect of mechanical seal: 1. Improve machine power and reduce energy consumption. 1. Reduce the internal leakage, external leakage and penetration of the machine, and improve the volumetric power of the machine. 2. Reduce conflict loss and improve mechanical power of mechanical seals of machines. For example, double face seal is changed to single face seal, unbalanced seal is changed to balanced seal
Published on: April 2, 2019 Clicks: 140
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How does mechanical seal 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 to fix auxiliary seal on shaft
Published on: March 20, 2019 Number of hits: 243
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The mechanical seal manufacturer introduced what is the container mechanical seal. First, the concept of "container" in transportation was used to produce the container type seal. The rotating and stationary parts of this seal are pre assembled as a whole before installation. After passing the inspection and pressure test, they are sleeved on the shaft in the shaft seal box, fixed on the shaft with set screws, tightened the gland bolts, and removed the container positioning piece, so that the mechanical seal can be in parallel
Published on: March 16, 2019 Clicks: 190
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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: 494
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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 Clicks: 603
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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 Number of hits: 252
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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: 111
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What are the structural characteristics of the mechanical seal for kettle? In terms of sealing principle, the machinery used for kettle and discharge chute is the same as that used for pump, but the mechanical seals used for pump have the same operating conditions and operating technology. Therefore, the requirements for seal structure design and sealing system are different from those used for pump, and have their own characteristics: 1. Radial vibration and axial displacement of mixing shaft
Published on: November 11, 2018 Clicks: 351
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