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Let the manufacturer of kettle mechanical seal tell you the external reasons that affect the pump mechanical seal! （1） The axial displacement of the pump shaft The sealing surface of the mechanical seal should have a certain specific pressure (0.4~0.6MPa), so as to achieve the purpose of sealing. The tightness of both ends can be adjusted by the spring. To ensure this specific pressure, the pump shaft shall not have too much displacement (≤ 0.5
Published on: May 31, 2020 Clicks: 93
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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: 232
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Mechanical seal, also known as 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 at the end faces perpendicular to the rotating axis and the elastic force (or magnetic force) of the compensation mechanism, and the auxiliary seal to keep the joint and relative sliding, and is commonly used in rotary pumps, compressors, reaction agitators, etc
Published on: May 14, 2020 Clicks: 184
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During the operation of centrifugal pump, the pump idling is not allowed. The majority of users "turn pale" at the idling of centrifugal pump. The reason for this is that they do not understand the causes of idling and do not know how to solve it well. In fact, the centrifugal pump will not cause damage (within 1 minute) when idling for a short time. The reason for the centrifugal pump idling is that the inlet medium of the pump is insufficient
Published on: April 30, 2020 Number of hits: 249
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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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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 Clicks: 192
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Installation of multi-stage pump mechanical seal by kettle mechanical seal manufacturer: 1. Sealing form: for static seal, there are usually only two forms: gasket and seal ring, and O-ring is the most widely used seal ring; For dynamic seals, centrifugal pumps rarely use packing seals, mainly mechanical seals. Mechanical seals can be divided into single end and double end, balanced type and unbalanced type, and the balanced type is suitable
Published on: April 9, 2020 Number of hits: 88
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1、 The pipeline part of the pipeline centrifugal pump is matched with some pipeline centrifugal pumps. Users think that this can improve the actual head. The actual head of the pump=total head~loss head. When the pump model is determined, the total head is certain; The loss head mainly comes from the pipeline resistance. The smaller the pipe diameter is, the greater the resistance is. Therefore, the greater the loss head is. So after reducing the pipe diameter, the actual lift of the pump
Published on: April 9, 2020 Number of hits: 88
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Normal operation and maintenance of mechanical seal for kettle 1. Preparations and precautions before startup a. Fully check whether the mechanical seal, auxiliary 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 shall be disassembled for inspection
Published on: March 28, 2020 Number of hits: 87
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Common gasket performance of kettle mechanical seal I) When using the valve, the original gasket is often replaced according to the specific situation. Common gaskets include: rubber flat washer, rubber O-ring, plastic flat washer, PTFE wrapped washer, asbestos rubber washer, metal flat washer, metal profiled washer, metal sheath washer, corrugated washer, spiral wound washer, etc. (1) Rubber
Published on: March 14, 2020 Clicks: 139
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Measurement of end face wear of mechanical seal manufacturer 1. Weighing method The weighing method is to measure the mass change before and after the friction pair ring test (operation) to determine the wear amount. It is generally carried out on the balance, which is a simple and easy common method. 2. Length measurement This method is to determine the wear amount by measuring}.: f The normal dimension change before and after the end face test of the friction pair. Generally, there should be a measurement benchmark
Published on: March 14, 2020 Number of hits: 102
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The mechanical seal manufacturer introduces the typical fault types and properties. The mechanical seal damage types include chemical damage, thermal damage and mechanical damage. (1) Chemical damage 1) Surface corrosion If the metal surface contacts the corrosive medium, but the metal itself does not corrode, surface corrosion will occur. In order to prevent surface corrosion, corrosion resistant materials can be used. Stainless steel has good corrosion resistance because of this
Published on: February 29, 2020 Number of hits: 135
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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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Replacement steps of mechanical seal for kettle Mechanical seal is very important for chemical pump, hot water pipeline pump and oil pump. The installation of mechanical seal can make the pump run without leakage, greatly improving the working environment of pump management personnel and extending the service life of the pump. The following is a detailed explanation of the installation steps of the mechanical seal: (1) Prepare the work for placing pump parts
Published on: February 4, 2020 Number of hits: 299
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The mechanical seal manufacturer explains the maintenance problems and the preparations before starting 1. Fully check the mechanical seal, and whether the installation of auxiliary devices and pipelines is complete and meet the technical requirements. 2. 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 shall be disassembled, checked and reinstalled. one
Published on: January 17, 2020 Number of hits: 156
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