Cartridge mounted mechanical seal for providing a seal between a housing and a rotatable shaft is provided, including at least one radial stud which extends by means of inside belonging to the rotary sleeve of the seal through the rotary sleeve and into the lock collar of the seal with the intention to transmit torque of the shaft to your rotating face of the seal.
Mechanical seals are utilized to provide a seal between various components on a rotating shaft. Such seals take many many forms. In industry of cartridge mounted seals are mechanical seals possess at least one pair of contacting seal faces, one rotary face and one stationary face, the rotary face being driven by its connection to a sleeve which is mounted nonrotatably to the shaft. cartridge seal unit is installed so before sliding the sleeve as well as the attached seal components towards the shaft and fixing the sleeve in place. A gland plate is supplied for supporting the stationary seal have to deal with. The gland plate is usually bolted to your housing (such as a pump housing) through that this shaft extends.
Cartridge mounted mechanical seals are shipped and installed as one. The rotary sleeve of your seal and the lock collar of prior art seals are saved in place during shipment by temporary clips or cams, which employment in conjunction with set screws which are threaded through holes in the lock collar and the sleeve. An arrangement is Cup point set screws extend through lock collar and sleeve.
Upon installation, cup point set screws dig into shaft, setting the seal in put. Although some seals have only cup point set screws to both set and drive the seal, this is not better. Dog point set screws using a blunt end are installed through holes in the lock collar and the sleeve. The outlet in sleeve matingly receives the end of dog point shag. Thus, the lock collar receives torque out of the cup point set screws and drives the sleeve via passed away point screws, protecting the cup point screws and threads from excessive wear. Dog point screws also put in a means for maintaining axial alignment of seal parts during transport.
While passed away point set screws solve the problem of excessive wear for the cup point screws as well as maintain axial alignment, several other issues present themselves. It is hard determine from the exterior in the lock collar which screws are which, resulting in accidental loosening or tightening of the wrong screws. For example, puppy point screw 64 might be overtightened into the point that the blunt end of the screw abuts the shaft, causing the lock collar and/or the sleeve to bend. Further, during rotation of shaft 63 dog point screws may back out of their holes causing excessive torque to be transmitted to cup point screws, galling threads and damaging the seal. Also, should dog point screws be mistakenly removed or loosened during shipment, axial misalignment for this seal might result.
Accordingly, always be an object of this invention to supply a cartridge mounted mechanical seal using a means for transferring torque from a shaft to your rotary components of the seal without damaging fastener components, such as cup point set anchoring screws.
It but another object of this invention to deliver a means for transferring torque from a shaft towards the rotary products in the seal which maintains axial alignment of the seal ahead of installation and throughout operation.
It continues to another object of this invention to provide a means for transferring torque from a shaft into the rotary elements of the seal which will not become disengaged during seal operation.
As can be seen, a stud torquing system is provided which protects threaded fasteners from damage during seal operation, and which maintains alignment during shipping. Really are millions no screws which could be mistakenly tightened or loosened in the way of dog point set screws. Other embodiments with the invention will occur individuals skilled inside art, and tend to intended end up being included inside of the scope and spirit of the following promises.
Therefore, an easier cartridge mounted mechanical seal for providing a seal between a housing while a rotatable shaft is provided, including incredibly least one radial stud which extends off of the inside of the rotary sleeve of the seal with the rotary sleeve and into the lock collar of the seal if you need to transmit torque from the shaft to your rotating face of the seal.