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Common faults and solutions of mechanical seal for kettle 1. Fault phenomenon: leakage occurs at the sealing surface. Fault cause: screw thread is loose; The sealing surface is damaged. Troubleshooting: Retighten the screw; Regrind and polish the sealing surface. 2. Fault phenomenon: there is leakage at the valve. Cause of fault: the valve rod (needle) and valve port sealing surface are damaged. Troubleshooting: repair and replace the valve rod
Published on: November 27, 2020 Number of hits: 202
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Corrosion prevention of mechanical seal for kettle is very important. Today, I would like to share some common knowledge about corrosion prevention of non-metallic rings: 1. Graphite ring corrosion. There are three reasons for the corrosion of resin impregnated impermeable graphite ring: first, when the end surface is overheated and the temperature is greater than 180oC, the impregnated resin will break away from the graphite ring, reducing the wear resistance of the ring; Second, if the impregnated resin is not properly selected
Published on: November 28, 2020 Number of hits: 97
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Characteristics of reactor sealing device Understand the characteristics of different types of reactors to master the key points of mechanical seal design. 1. From the lubrication point of view, the mechanical seal used for the plug-in reaction kettle at the side of the mixing shaft generally does not have the problem of poor lubrication, and the liquid level of the medium in the kettle must be kept at a certain height. For the reaction kettle with shaft protruding from one side, the shaft is in cantilever state, so it is easy to produce
Published on: December 12, 2020 Number of hits: 108
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The leakage point of chemical pump The leakage point of chemical pump The mechanical seal for pump has a wide range of types and different models, but there are five main leakage points: the seal between the shaft sleeve and the seal between the shaft sleeve and the seal between the shaft sleeve Sealing between stationary rings Sealing between stationary ring and stationary ring seat Sealing between end cover and pump body
Published on: November 13, 2020 Clicks: 87
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Commissioning test of mechanical seal for double end kettles (including 2001 and 2002 models) (1) Static pressure test:. Cycle B
Published on: July 15, 2020 Clicks: 206
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Cause analysis of thermal damage of mechanical seal for kettle thermal damage is mainly overheating. It is difficult to calculate the thermal effect of mechanical seal, and it can only be designed correctly from the perspective of considering thermal influence factors, but the friction coefficient pV value and thermal conductivity, dry running performance and practical experience must be known. Thermal damage includes the following types: 1) Thermal cracking, usually under the action of excessive thermal stress, the sealing ring
Published on: February 29, 2020 Clicks: 144
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Technical requirements for main parts of kettle mechanical seal 1. Flatness and roughness requirements for sealing end face 2. Parallelism of sealing end face of stationary ring and moving ring and the end face contacting the auxiliary sealing ring shall comply with grade 7 tolerance in GB1184~80 Regulations on Form and Position Tolerances without Tolerance Indications 3. Surface roughness of contact between stationary ring and moving ring and auxiliary sealing ring shall comply with JB4127-8
Published on: January 1, 2020 Number of hits: 232
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Technical conditions of kettle mechanical seal Only the kettle mechanical seal that meets the technical conditions is qualified. However, due to their too many models and different equipment, their requirements are different, and their production technologies are also different. So the quality of the products is different. The main purpose of formulating its technical conditions is to standardize the later production. Its technical conditions include:
Published on: December 17, 2019 Clicks: 170
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Instructions for use of kettle mechanical seal 1. Mechanical seal (end face 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 cooperation of fluid pressure, elastic force of compensation mechanism and auxiliary seal, to keep sticking and relatively sliding. 2. Mechanical seal for kettle, applicable to all kinds of steel kettle, enamel kettle, glass lined kettle mixing shaft and
Published on: December 3, 2019 Clicks: 154
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What is the difference between the mechanical seal for the agitator and the mechanical seal for the pump? Mechanical seal for agitator kettle and mechanical seal for pump are mechanical parts used to seal rotating shaft and static pump chamber. The sealed part is a cylindrical area, the shaft in the equipment rotates and penetrates inside and outside the equipment, and the body part is still and full of fluid medium inside. Driven by pressure difference, concentration difference, temperature difference, etc
Published on: November 9, 2019 Clicks: 145
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The mechanical seal is a mechanical part used to seal the rotating shaft and the stationary pump chamber. The sealed part is a cylindrical area, the shaft in the equipment rotates and penetrates inside and outside the equipment, and the body part is still and full of fluid medium inside. Driven by pressure difference, concentration difference and temperature difference, fluids inside and outside the equipment exchange with each other; "Sealing" means to control the fluid exchange between internal and external areas, so that“
Published on: December 11, 2020 Clicks: 87
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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: 160
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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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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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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 Clicks: 162
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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: 338
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What are the key points of using mechanical seals for kettles? In the pump parts, mechanical seal is a very important part, and mechanical seal is also a vulnerable part. If the mechanical seal is damaged, the pump body will leak. If a direct coupled pump is used, the motor will be damaged once the medium in the pump body penetrates into the motor. Therefore, the quality of mechanical seals is crucial. want
Published on: November 23, 2018 Clicks: 153
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1. Preface: Kettle machinery is an important system equipment for industrial production. If leakage occurs in the production and application phase, it will have a negative impact on product quality, and will also emit toxic, explosive and flammable dangerous gases, posing a significant hazard to the ecological environment and the plant system itself. If the kettle machinery is overhauled for many times, the materials need to be transferred out and necessary
Published on: November 26, 2018 Number of hits: 150
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Use of mechanical seal for kettle 1. Before normal use, operate under normal pressure, and observe whether the temperature rise of the sealing part is normal and whether there is leakage. If there is slight leakage, run in for a period of time to make the end face fit more evenly until the leakage gradually reduces to normal. If the leakage does not decrease after 1-3 hours of operation, stop the machine for inspection. 2. Main
Published on: November 28, 2018 Clicks: 177
