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Why mechanical seal is called mechanical?
Mechanical seal uses mechanical components like spring, screws, spring retainer and seal faces to seal the gap between rotary (shaft) and stationary portion (housing) of a pump. Mechanical seal contains stationary face and rotary face combination to create the seal. The rotary and stationary faces aRead more
Mechanical seal uses mechanical components like spring, screws, spring retainer and seal faces to seal the gap between rotary (shaft) and stationary portion (housing) of a pump. Mechanical seal contains stationary face and rotary face combination to create the seal. The rotary and stationary faces are pressed against each other with the help of mechanical spring to achieve the seal. Hence it is called mechanical seal. It is in contrast to other types of seals like gland packing and lip seals where sealing is achieved by means of non-mechanical things. the gland ropes are just braided ropes wrapped around the shaft of the pump to seal the gap between shaft and the housing.
See lessWhy internal clearance is given in bearing?
There are two reasons why internal clearance in the bearing is necessary. Reason: -1 Due to interference fit between the bearing outer race and the housing, the outer race tries to shrink a little. Similarly, the interference fit between the shaft and the inner race, the inner race tries to expand aRead more
There are two reasons why internal clearance in the bearing is necessary.
Reason: -1 Due to interference fit between the bearing outer race and the housing, the outer race tries to shrink a little. Similarly, the interference fit between the shaft and the inner race, the inner race tries to expand a little. To accommodate the shrink and expansion of bearing races, internal clearances in the bearing are necessary.
Reason: -2 During operation due to friction between bearing components, internal clearances are required to accommodate the differential thermal expansion of bearing components.
See lessWhat is the internal clearance code for bearing?
International Organization for Standardization (ISO) established five classes of bearing clearances. They are ISO Clearance Classes Internal Clearance Group-2 Smaller than normal clearance Group-N (Normal) Normal clearance Group-3 Greater than normal clearance Group-4 Clearance greater than group-3Read more
International Organization for Standardization (ISO) established five classes of bearing clearances. They are
Apart from this, manufacturers had established their own designation for bearing clearance in form of suffixes like 6205 C3.
What is the difference between the open-ended and closed-ended rotor of a Rotary Air Lock Valve?
Open Ended Rotor Close Ended Rotor Construction: Rotor does not contain end plates. The rotor contains shaft and vanes only. Construction: Rotor contains end plates at both ends along with the shaft and the vanes. Application: Since there are no end plates, the abrasive material will wear the casingRead more
Figure:- Open Ended Rotor
Figure:- Closed End Rotor
See lessWhat is EN 24 material?
It’s a medium carbon steel having composition as shown in figure below. EN 24 is not a stainless steel because the chromium percent is less than 10 $ % $. It is a medium carbon steel since EN 24 consists of 0.4% carbon. EN 24 have good tensile strength due to adequate carbon presence but poor toughnRead more
It’s a medium carbon steel having composition as shown in figure below.
EN 24 is not a stainless steel because the chromium percent is less than 10
. It is a medium carbon steel since EN 24 consists of 0.4% carbon. EN 24 have good tensile strength due to adequate carbon presence but poor toughness. To get toughness, FCC (Face Centered Cubic) element i.e., Nickel is added as an alloying element. Nickel refines the grain size by blocking the grains from becoming larger and coarser during heating. Fine grains have higher toughness as compared to coarser grains. EN 24 is heat treatable and its hardenability is enhanced by adding Chromium as an alloying element. Manganese is used to remove impurities like oxygen and sulphur from the iron ore hence trace amounts will be left over in the final metal.
See lessWhat is the difference between a Screw Feeder and a Screw Conveyor?
Screw Feeder Screw Conveyor The screw feeder is designed to handle bulk material. Screw Conveyor also is designed to handle bulk material A screw feeder is designed to feed a metered quantity of bulk material. The screw conveyor is designed to move the feed from one place to other. Generally, it isRead more
What is the purpose of Lip seal?
A lip seal is installed between the rotary shaft and the stationary housing. The lip seal acts as a shield between the lubricant and the atmosphere, it prevents the entry of dirt from entering the lubrication chamber. The lip seal acts as a seal as well by preventing the leakage of lubricant into thRead more
A lip seal is installed between the rotary shaft and the stationary housing. The lip seal acts as a shield between the lubricant and the atmosphere, it prevents the entry of dirt from entering the lubrication chamber. The lip seal acts as a seal as well by preventing the leakage of lubricant into the atmosphere.
See lessWhat is the meaning of EN-8 material?
EN stands for “Emergency Number”. There was intense demand for developing new materials during the world war era for manufacturing advanced weapons and machinery. Scientists and engineers involved in research do not have sufficient time to set standards for discovered materials having different cheRead more
EN stands for “Emergency Number”. There was intense demand for developing new materials during the world war era for manufacturing advanced weapons and machinery. Scientists and engineers involved in research do not have sufficient time to set standards for discovered materials having different chemical compositions and mechanical properties. Based on the chemical composition of a material, they had given emergency numbers, in short form “EN”.
See lessWhat is the application of lip seals?
Lip seals are preferred where the differential pressure between sealing fluid and atmosphere is less than 30 Kpa pressure. Lip seal is the weakest component in the lubrication system.
Lip seals are preferred where the differential pressure between sealing fluid and atmosphere is less than 30 Kpa pressure. Lip seal is the weakest component in the lubrication system.
See lessWhat is Mono block bearing?
Mono block bearing housing incorporates two bearings in single housing thus eliminating the misalignment issues between two bearings. It is generally used to support the shaft of overhung impeller of centrifugal fans. Figure-1: Sectional View of Mono Block Housing Figure-2: Typical Mono BlockRead more
Mono block bearing housing incorporates two bearings in single housing thus eliminating the misalignment issues between two bearings. It is generally used to support the shaft of overhung impeller of centrifugal fans.
Figure-1: Sectional View of Mono Block Housing
Figure-2: Typical Mono Block Housing
See less