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The utility model relates to the technical field of mechanical seal devices, in particular to a mechanical seal for a dry running kettle. Background technology: Kettle mechanical seal is an ideal way to solve the problem of mixing shaft seal. According to the logarithm of sealing surface, there are single end mechanical seal and double end mechanical seal. Double end mechanical seal is generally equipped with a balanced circulation system, which can be used in flammable, explosive, toxic, corrosive, high-tech
Published on: October 26, 2019 Clicks: 126
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204 Misuse of mechanical seal manufacturers 1. The greater the spring compression, the better the sealing effect. In fact, too much spring compression can lead to rapid wear and instant burning of friction pairs; 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 is, the better. In fact, too tight the dynamic ring seal is harmful and useless. First, intensify the seal ring and shaft
Published on: October 26, 2019 Clicks: 118
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Let the mechanical seal manufacturer tell you the installation and technical requirements of the mechanical seal of centrifugal pump! 1、 Technical requirements for matching parts of machine, pump and mechanical seal: 1. The maximum shaft bending shall not exceed 0.05mm. 2. All parts in the component meet the drawing requirements. 3. The gland shall be tightened after the alignment of the coupling, and the compression screws shall be tightened to prevent the flange surface from deflection.
Published on: October 15, 2019 Clicks: 132
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Some key points of mechanical seal installation and disassembly There should be a layer of liquid film between the seal rings of mechanical seal, which has the following functions: 1. Support most of the water pressure load on the seal. 2. As a lubricant, reduce the friction heat generated by the seal ring. 3. Minimize rough contact to reduce wear rate. 4. As the heat transfer medium, transfer the direct area of the seal ring
Published on: October 12, 2019 Number of hits: 152
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The reason for the leakage of newly installed mechanical seal after it is put into operation is mostly the installation problem. 1) The designed face specific pressure is too small to meet the face specific pressure required by the mechanical seal; 2) The compression of mechanical seal spring is too small; 3) The roughness of mechanical seal end face does not meet the requirements; 4) The flatness of mechanical seal end face is not enough; 5) Mechanical seal ring under pressure and
Published on: October 10, 2019 Clicks: 153
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Introduction to mechanical seal Mechanical seal is one of the precision and complex mechanical basic elements, and is the key component of various pumps, reaction synthesis kettles, turbine compressors, submersible motors and other equipment. Its sealing performance and service life depend on many factors, such as model selection, machine accuracy, correct installation and use, etc. Basic knowledge of mechanical seals 1. Basic overview of mechanical seals
Published on: October 9, 2019 Clicks: 113
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The mechanical seal for the reactor is the mechanical seal used on the reactor, which is a very important part of the reactor, and it directly affects the service life and stability of the reactor. Therefore, to improve the service life and reliability of mechanical seals for reactors, it is necessary to research and produce mechanical seals with higher parameters, so as to improve the performance and service life of reactors& nb
Published on: October 9, 2019 Clicks: 204
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Let 204 mechanical seal manufacturer tell you about the normal operation and maintenance of mechanical seals! 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
Published on: September 24, 2019 Clicks: 93
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Special mechanical seal refers to the mechanical seal that is different from ordinary mechanical seal in terms of medium, pressure, speed, temperature, structure and use. It is also called high parameter mechanical seal in China. The mechanical seal is divided into ordinary and special types, which is convenient to describe the structure, working conditions and use requirements of mechanical seal. Therefore, some seal manufacturers list normal seal products, High loads are also listed
Published on: September 16, 2019 Number of hits: 382
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The function of mechanical seal The manufacturer of mechanical seal tells you! 1、 Improve machine efficiency and reduce energy consumption. 1. Reduce the internal leakage, external leakage and penetration of the machine, and improve the volumetric efficiency of the machine. For example, Daqing Refinery will coking 5FDJ5 × 2. The impeller mouth ring of centrifugal pump was changed into mechanical seal, which improved the pump efficiency by 3.6% and 5.6%. 2. Reduce friction loss and improve the
Published on: September 12, 2019 Clicks: 127
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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: 219
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The mechanical seal manufacturer's summary of the principle of mechanical seal Mechanical seal is a shaft seal device that can prevent leakage by means of a pair of cartridge mechanical seals or several pairs of opposite sliding end faces perpendicular to the shaft under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and is equipped with auxiliary seals. Common mechanical seal structure consists of stationary ring (stationary ring), rotating ring (moving ring) and elastic element spring
Published on: September 1, 2019 Number of hits: 271
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The mechanical seal manufacturer explained the seal failure. 1. The seal failure is mainly caused by the following three reasons: (1) When the sealing surface is opened and the mechanical seal is repaired, 85% of the seal failure is not caused by wear, but has leaked before wear. As soon as the sealing surface is opened, solid particles in the medium enter the sealing surface under the action of liquid pressure. After the sealing surface is closed, these solid particles are embedded
Published on: August 27, 2019 Clicks: 143
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Tips for installation and use of mechanical seal for kettle 1. Apply a layer of clean lubricant on the surface in contact with the seal during installation to facilitate smooth assembly. Recommended lubricants: soapy water, silicone grease, ethylene glycol ester or glycerin, etc. 2. The sealing cavity of the equipment shall be kept clean during installation, and the sealing parts shall be
Published on: August 24, 2019 Clicks: 127
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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: 211
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