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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. Fault cause: 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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The mechanical seal manufacturer introduces the advantages and disadvantages of the product. 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, or even the leakage can not be seen by the naked eye. (2) Long life. In mechanical seals, the main wear part is the seal friction pair
Published on: April 18, 2020 Number of hits: 116
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Mechanical seal manufacturer's installation 1 Installation principle (1) Be familiar with the equipment. Before installing the mechanical seal, be familiar with the rotating speed and diameter of the shaft; Consider the manufacturing process of mechanical seal, relevant dimensions of seal chamber, service time of equipment, staff level of production equipment, etc. (2) Estimate the pressure of the medium. The sealing chamber pressure of centrifugal pump is usually
Published on: January 4, 2020 Number of hits: 122
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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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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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Does the mechanical seal include oil seal? The mechanical seal manufacturer tells you! Mechanical seals cover a wide range. It can be seen that this piece can help the equipment to create better sealing conditions, and can give the equipment more rapid operation. Although its structure is complex and precise, it is also because of this, so it is easy to use. Does the seal actually include an oil seal? 1. The oil seal is generally tight
Published on: December 21, 2019 Clicks: 317
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The mechanical seal manufacturer introduces the working characteristics of parallel water pumps: there are many ways to change the working conditions of the pump system, one of which is the performance synthesis of multiple pump equipment. When one pump cannot meet the working conditions, multiple pumps need to be connected in parallel or in series to obtain the desired flow and head. When the first water pump is connected with the suction pipe of the second or multiple water pumps, the outlet pipe
Published on: November 12, 2019 Clicks: 169
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Mechanical seal is a shaft seal device of rotating machinery. Such as centrifugal pumps, centrifuges, reaction kettles, compressors and other equipment. Since the transmission shaft runs through the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment, through which the medium in the equipment leaks outward. If the pressure in the equipment is lower than atmospheric pressure, the air flows to the equipment
Published on: July 1, 2020 Clicks: 90
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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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204 Mechanical seal manufacturer's introduction to mechanical seal of centrifugal pump I. Technical requirements for matching 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. 2、 Mechanical seal for pump
Published on: December 24, 2019 Number of hits: 153
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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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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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The mechanical seal manufacturer introduces the role of the seal. First, improve the efficiency of the machine 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 mechanical efficiency of the machine
Published on: December 28, 2019 Number of hits: 110
