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What is the common sense of mechanical seal selection-- 204 For the selection of mechanical seal elements, the working conditions shall be taken into consideration, so as to select the appropriate seal element form, material and installation structure. The working conditions to be considered generally include: temperature, pressure, medium. Its mechanical seals also need to be selected according to the characteristics of the equipment itself. About temperature, such as N
Published on: January 16, 2021 Clicks: 98
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204 Introduction to the basic knowledge of mechanical seal Mechanical seal (end face seal) is a device used to solve the sealing between rotating shaft and engine body. It is a device to prevent fluid leakage, which is composed of at least one pair of fluid pressures on the end faces perpendicular to the rotation axis, the elastic force (or magnetic force) of the compensation mechanism, and the auxiliary seal, which are kept together and sliding relatively. It is commonly used in pumps, compressors
Published on: April 15, 2020 Clicks: 192
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204 Overview of mechanical seal Mechanical seal (end face seal) is a device used to solve the sealing between rotating shaft and engine body. It is a device to prevent fluid leakage, which is composed of at least one pair of fluid pressures on the end faces perpendicular to the rotation axis, the elastic force (or magnetic force) of the compensation mechanism, and the auxiliary seal to keep the joint and relative sliding, and is commonly used in pumps, compressors, reactions
Published on: December 7, 2019 Number of hits: 156
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204 Cause of mechanical seal leakage (I) Leakage caused by pressure 1. Fault I: Mechanical seal leakage caused by high pressure and pressure wave Cause: The specific pressure of spring and the total specific pressure design 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, resulting in
Published on: September 9, 2019 Number of hits: 216
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204 Basic structure and primary characteristics of mechanical seal Mechanical seal is a kind of equipment used to deal with the seal between rotating shaft and engine body. It consists of at least one pair of end faces perpendicular to the rotation axis, sticking and sliding together under the effect of fluid pressure and tissue elasticity (or magnetic force) compensation and the cooperation of auxiliary seals to avoid fluid leakage. It is commonly used in pumps, compressors, anti leakage devices
Published on: June 1, 2019 Clicks: 178
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204 Normal operation and maintenance of mechanical seal 1. Preparations and precautions before startup a. Fully check whether the mechanical seal, accessory devices and pipeline installation are complete and meet the technical requirements. b. Static pressure test shall be carried out before starting the mechanical seal to check whether there is leakage of the mechanical seal. If there are many leaks, find out the causes and try to eliminate them. If it is still invalid, it should be disassembled
Published on: August 20, 2019 Number of hits: 208
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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: 165
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204 Technical requirements of mechanical seal 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 shall be enough strength and rigidity to avoid damage under working conditions (such as pressure, temperature and sliding speed), and the deformation shall be as small as possible
Published on: September 26, 2020 Clicks: 114
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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: 334
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204 Service Life and Reliability of Mechanical Seals 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,
Published on: July 16, 2019 Number of hits: 166
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204 Mechanical seal manufacturer: Introduction to several cooling methods of mechanical seal! Flushing cooling: when the sealing medium temperature is high, the mechanical seal is usually purchased for flushing cooling. The inlet of flushing fluid is aligned with the friction surface. The purpose of flushing is to keep the temperature of the friction surface within a certain range and prevent the accumulation of impurities near the seal face. This is a common
Published on: October 30, 2018 Number of hits: 244
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204 The mechanical seal manufacturer teaches you how to prevent the leakage of the liquid pump! What should we do if the mechanical seal fluid pump leaks? Don't panic. The mechanical seal manufacturer will tell you how to solve the leakage. Let's start with the basic elements of the seal: the basic element of the seal, the mechanical seal, uses the principle of two planes running against each other to achieve the purpose of sealing. The rotary sealing surface is installed on the main part of the liquid pump
Published on: October 28, 2018 Number of hits: 290
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204 What are the maintenance methods and precautions of mechanical seal manufacturers? Because the application environment of mechanical seal is very messy, and the seal structure is more complicated, the sealing degree of mechanical seal is very simple to be damaged, so it is very important to repair the mechanical seal. 1、 Precautions for disassembly of mechanical seal 1. Installation sequence of mechanical seal and disassembly of pump mechanical seal
Published on: November 2, 2018 Clicks: 134
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204 The mechanical seal manufacturer tells you the inspection process of mechanical seal! Mechanical seal maintenance procedures To master mechanical seal maintenance and repair, first know the working principle of mechanical seal. The mechanical seal is a sealing device composed of two sealing elements (static ring and dynamic ring) perpendicular to the shaft, smooth and straight surfaces that stick together and rotate relative to each other. It depends on
Published on: July 12, 2019 Number of hits: 494
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204 Mechanical seal manufacturers teach you the washing skills of seals! Features of mechanical seal flushing technology The purpose of mechanical seal flushing is to prevent the accumulation of impurities, prevent the formation of air bags, maintain and improve lubrication, etc. When the flushing fluid temperature is low, it also has a cooling effect. Now Hengda Mechanical Seal will explain the technical features of mechanical seal flushing. 1. Internal scour and forward scour
Published on: November 10, 2018 Clicks: 107
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204 How to remove the mechanical seal for maintenance After removing the mechanical seal, first check the pump body where the organic seal is installed, and the following requirements must be met: 1. The maximum shaft bending is ≤ 0.05mm, and the axial displacement is ≤ 0.05mm. 2. The runout at the sealing ring of the moving ring is ≤ 0.01mm. 3. The surface roughness of the shaft or shaft sleeve at the installation part of the mechanical seal is 1.6 μ m. And stationary ring
Published on: November 12, 2018 Clicks: 131
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204 What are the corrosive causes of the leakage? The mechanical seal will leak, and there are many reasons for this phenomenon, including the corrosiveness of the filling medium to the device. To solve this problem, you must solve the problem from the process, equipment, maintenance and operation, and only after these faults are eliminated
Published on: November 11, 2018 Number of hits: 167
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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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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: 155
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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
