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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: 133
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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: 123
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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: 255
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205 double end kettle mechanical seal structure features: 205 type kettle mechanical seal is double end, multi spring unbalanced structure. The purpose of sealing is mainly achieved by the pressure difference between the sealing liquid in the sealing chamber and the sealed medium. The sealing liquid needs another set of device to circulate. The whole system is complex. Therefore, it is only used for sealing flammable, explosive, toxic and strongly corrosive media in special occasions. Friction pair
Published on: November 13, 2020 Number of hits: 257
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The leakage point of chemical pump There are many types of mechanical seals used for pumps with different models, but there are five main leakage points: the seal between the shaft sleeve and the shaft, the seal between the dynamic ring and the shaft sleeve, the seal between the static ring and the seal between the static ring and the static ring seat. The seal between the end cover and the pump body: the seal bursts during operation (end face bursts) Possible cause: sealing fluid is sealing
Published on: November 13, 2020 Number of hits: 120
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For the maintenance of mechanical seal, it is necessary to master the maintenance and repair of mechanical seal. First, it is necessary to 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 is generated on the contact surface (end face) of rotating rotating ring and stationary ring by the pressure of sealing medium
Published on: November 9, 2020 Number of hits: 89
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General knowledge of mechanical seal Working principle of mechanical seal Mechanical seal is a shaft seal device that can prevent leakage by means of one or more 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 matching with auxiliary seals. 2. Selection of common materials for mechanical seal: purified water; normal atmospheric temperature; (Dynamic) 9CR18, 1CR13 surfacing cobalt chromium
Published on: November 3, 2020 Number of hits: 105
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Lubrication of mechanical seal for kettle Mechanical seal working in liquid medium generally relies on the liquid film formed by liquid medium between the dynamic and static ring friction surfaces for lubrication. Therefore, maintaining the liquid film between friction surfaces is essential to ensure the stable operation of mechanical seals and extend their service life. According to different conditions, the friction between the dynamic and static rings of the mechanical seal may occur in the following cases: (1)
Published on: October 29, 2020 Number of hits: 116
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204 Introduction of mechanical seal manufacturer Installation and maintenance of pump mechanical seal 1 Installation of pump mechanical seal 1.1 Installation preparation of pump mechanical seal Ensure that the installation chamber is clean and free of any foreign matter. The shaft or sleeve matched with the mechanical seal shall have correct size, smooth surface, good mechanical seal for linear pump, and no burr, sharp corner, nick or excessive
Published on: October 17, 2020 Clicks: 192
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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 Number of hits: 152
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HU2 type multi spring single end mechanical seal HU2 type mechanical seal dimensions comply with ISO3069, DIN24960 and GB/T6556 standards, strong interchangeability, can replace imported mechanical seal 59U, M7N, etc. The auxiliary seal ring can be rubber O-ring, PTFE V-ring, PTFE wedge ring according to user requirements. No rotation with axis
Published on: September 26, 2020 Clicks: 83
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Guide for installation of 212 kettle mechanical seal 1. 212 type is a single end polytetrafluoroethylene bellows partially balanced mechanical seal. The mechanical seal is integrated with the temperature regulator and is equipped with auxiliary support PTFE bushing. The dynamic ring and static ring are two components with high precision requirements. Therefore, the technical requirements and work quality during on-site installation and commissioning should be strictly controlled, which is an extremely important link
Published on: July 14, 2020 Clicks: 393
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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 Number of hits: 120
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Let the mechanical seal manufacturer tell you how to replace the mechanical seal! Mechanical seal transmits power and motion transmission by mechanical means. Mechanical transmission is widely used in mechanical engineering, including belt transmission, gear transmission, chain transmission, worm and worm gear transmission, gear rack transmission and spiral transmission. Gear transmission can be used for high-power
Published on: May 16, 2020 Number of hits: 338
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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 Number of hits: 264
159 in total
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