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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: 137
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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 Number of hits: 115
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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 seals are divided into ordinary and special types, which is convenient to describe the structure, working conditions and use requirements of mechanical seals. Therefore, some seal manufacturers list high load in addition to normal seal products
Published on: September 16, 2019 Number of hits: 617
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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: 278
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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: 307
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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: 149
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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: 244
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The mechanical seal manufacturer's introduction principle and requirements The mechanical seal refers to a sealing device formed by two sealing elements sticking together on a smooth and straight surface perpendicular to the axis and rotating relative to each other. It usually consists of static ring, dynamic ring, spring loading device (including push ring and spring box), auxiliary sealing ring (dynamic ring sealing ring, static ring sealing ring) and other elements, Anti rotation inside the anti rotation sleeve
Published on: July 30, 2019 Clicks: 155
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Advantages and disadvantages of mechanical seal for kettle 1. Advantages (1) The structure is reliable, and the leakage can be limited to a small amount. As long as the surface roughness and straightness of the main sealing surface can meet the requirements, and as long as the wear resistance of the material is good, the mechanical seal can achieve a small amount of leakage, even the leakage can not be seen by the naked eye. (2) Long life. In the mechanical seal, the main wearing part is the end face of the seal friction pair, because
Published on: July 23, 2019 Number of hits: 185
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How to replace the mechanical seal of horizontal grinder? Listen to what the mechanical seal manufacturer said! 1. Remove the cylinder; 2. Remove the distributor assembly and the screen. 3. Clean the shaft with solvent, and remove the front cover and discharge cover of the cylinder. 4. Remove the two elastic rubber hoses and remove the discharge tray. 5. Remove the sealing ring,
Published on: July 20, 2019 Number of hits: 300
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The mechanical seal manufacturer introduces the problems that should be noticed in use. 1. Precautions during installation. a. Pay great attention to avoid the installation deviation during installation. (1) Tighten the gland after the alignment of the coupling. The bolts should be evenly supported to prevent the end face of the gland from deflecting. Check each point with a feeler gauge, and the error should not be greater than 0.05 mm. (2) Check the fit clearance between the gland and the outer diameter of the shaft or shaft sleeve
Published on: June 18, 2019 Clicks: 139
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The mechanical seal for kettle has higher sealing requirements. When the shaft needs to bear greater radial force, the mechanical seal with built-in bearing should be selected, but it is generally not used as the bearing point of the shaft. If it is necessary to use this as the supporting point, the improved mechanical seal with T after the model shall be selected. Replace the built-in bearing of the mechanical seal for kettle with two tapered roller bearings, which can replace the
Published on: June 11, 2019 Clicks: 183
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Mechanical seal uses the principle that two planes rub against each other to achieve the purpose of sealing. The rotating sealing surface is installed on the main shaft of the liquid pump, while the fixed sealing surface is installed in the sealing gland. Since one sealing surface is moving while the other is stationary, this type of seal is called dynamic seal. Fig. 1 The seal between the rotating surface and the stationary surface is the decisive seal
Published on: June 3, 2019 Clicks: 385
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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 Number of hits: 234
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1、 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 cooperation of the auxiliary seal to keep fit and slide relatively. It is commonly used in pumps, compressors, reaction mixers
Published on: June 1, 2019 Number of hits: 159
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