We take a bath with shower at home , if not in the middle of the rubber seal , then the water will flow out from the middle of the shower head and the pipe , is not conducive to a better flow of our larger body wash , with that little
surgical implant titanium can be solved , and our hands warm in winter to warm rubber handbags, also has a rubber cover in the middle seals . Those are made with Teflon .
Because there is between the seal and the shaft rail car seals edge control film, this film has a fluid lubrication properties. Under the effect of liquid surface tension , the stiffness of the film happens to end in contact with air so that the film forms a meniscus prevents leakage of the working medium , the rotating shaft in order to achieve sealing . Seal sealing ability , depending on the thickness of the sealing surface of the film thickness is too large, tittanium bar leakage ; thickness is too small , dry friction may occur , causing oil seal and shaft wear ; no oil film between the sealing lip and the shaft , is easy to cause fever, wear .
Therefore , during installation , the seal must be applied some oil , while ensuring that the vertical axis of the oil medical titanium plate , if vertical sealing lip seal will drain the lubricating oil from the shaft , the sealing lip can also cause excessive wear. In operation , the lubricant leaking point slightly inside the housing to reach the state of the oil film at the sealing surface is ideal.
A mechanical seal installed
1, check the installation of mechanical seals models , specifications are correct.
2, check the host associated with the installation of the mechanical seal parts of the dimensional accuracy and geometric accuracy and compliance with the technical requirements of the relationship . Mainly in the following areas:
( A ) Radial shaft sealing parts of the mechanical ( or sleeve ) runout tolerance , the shaft ( or sleeve ) and the outer diameter surface finish tolerances.
( 2 ) the seal chamber and the end face of the shaft gland combined with positioning ( or sleeve ) vertical centerline of the degree of tolerance.
( 3 ) Install a shaft seal ring ( or sleeve ) of the end portion , and the finish end portion of the chamfered structure of the mechanical seal housing mounting hole.
( 4 ) the amount of axial displacement of the shaft mechanical seal work.
3 , during the installation of mechanical seals should be kept clean and not allowed to use tools beat the sealing element to prevent damage and destruction.
4 , installation, dynamic and static ring surface should be coated with a layer of clean oil and turbine oil . Secondary seal ( including dynamic and static ring ring ring ring ) before installation also need a clean coat of oil or turbine oil , in order to ensure a smooth installation .
5, the stationary ring seal trap in the back of the stationary ring , into a sealed cover, pay attention not to hurt the stationary ring , to ensure that the static ring face and cover the vertical centerline , and pay attention to the stationary ring to the back of the anti-rotation slot aligned with anti-rotation pin , but not in contact .
6, the rotating part of the mechanical seal , relies on two spring seat fixed shaft fixing screws and tighten the screws fixed to ensure that the working length of the spring .
Since the rubber seals to make life particularly handy little things have changed , and in industrial applications is all the more important, the rotating part of the mechanical seal , relies on two spring seat fixed shaft fixing screws and tighten the mounting screws , the required work of the spring length. Correct use of seals , which can effectively prevent danger arising
Because there is between the seal and the shaft rail car seals edge control film, this film has a fluid lubrication properties. Under the effect of liquid surface tension , the stiffness of the film happens to end in contact with air so that the film forms a meniscus prevents leakage of the working medium , the rotating shaft in order to achieve sealing . Seal sealing ability , depending on the thickness of the sealing surface of the film thickness is too large, tittanium bar leakage ; thickness is too small , dry friction may occur , causing oil seal and shaft wear ; no oil film between the sealing lip and the shaft , is easy to cause fever, wear .
Therefore , during installation , the seal must be applied some oil , while ensuring that the vertical axis of the oil medical titanium plate , if vertical sealing lip seal will drain the lubricating oil from the shaft , the sealing lip can also cause excessive wear. In operation , the lubricant leaking point slightly inside the housing to reach the state of the oil film at the sealing surface is ideal.
A mechanical seal installed
1, check the installation of mechanical seals models , specifications are correct.
2, check the host associated with the installation of the mechanical seal parts of the dimensional accuracy and geometric accuracy and compliance with the technical requirements of the relationship . Mainly in the following areas:
( A ) Radial shaft sealing parts of the mechanical ( or sleeve ) runout tolerance , the shaft ( or sleeve ) and the outer diameter surface finish tolerances.
( 2 ) the seal chamber and the end face of the shaft gland combined with positioning ( or sleeve ) vertical centerline of the degree of tolerance.
( 3 ) Install a shaft seal ring ( or sleeve ) of the end portion , and the finish end portion of the chamfered structure of the mechanical seal housing mounting hole.
( 4 ) the amount of axial displacement of the shaft mechanical seal work.
3 , during the installation of mechanical seals should be kept clean and not allowed to use tools beat the sealing element to prevent damage and destruction.
4 , installation, dynamic and static ring surface should be coated with a layer of clean oil and turbine oil . Secondary seal ( including dynamic and static ring ring ring ring ) before installation also need a clean coat of oil or turbine oil , in order to ensure a smooth installation .
5, the stationary ring seal trap in the back of the stationary ring , into a sealed cover, pay attention not to hurt the stationary ring , to ensure that the static ring face and cover the vertical centerline , and pay attention to the stationary ring to the back of the anti-rotation slot aligned with anti-rotation pin , but not in contact .
6, the rotating part of the mechanical seal , relies on two spring seat fixed shaft fixing screws and tighten the screws fixed to ensure that the working length of the spring .
Since the rubber seals to make life particularly handy little things have changed , and in industrial applications is all the more important, the rotating part of the mechanical seal , relies on two spring seat fixed shaft fixing screws and tighten the mounting screws , the required work of the spring length. Correct use of seals , which can effectively prevent danger arising
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