Cartridge seal assembly method-mechanical seal-

Assembly method of cartridge seal




Assembly method of cartridge seal:
(1) Assembly of gland and bellows
The gland and the bellows are connected with 6--12 bolts, and there are gaskets between them to prevent medium leakage.
(2) Hard ring positioning
First, fix the fixing ring on the positioning countersunk hole of the shaft sleeve, then put the gland and bellows assembly in to make it close to the fixing ring, put on the hard ring, the wedge ring and the rotating seat ring to determine the position of the rotating seat ring Then, slightly tighten the ring set screw,
The rotating ring and the hard ring are connected with screws, and the fixing ring, the gland and the bellows assembly are taken out.
(3) Alignment of the end face
When the rotating seat ring and the hard ring are connected to the bushing, the verticality of the end face must be maintained. Generally, ensure that the end face runout is less than 0.05mm. On the assembly platform, after tightening the set screw on the rotating seat ring,
Use the dial indicator to align and tighten the screws connecting the rotating seat ring and the hard ring to ensure the verticality of the end face.
(4) Adjustment of the amount of compression
The compression amount of the cartridge bellows mechanical seal is reflected in the thickness of the positioning block. However, some special users want different compression amounts, which can be adjusted as follows:
For 45 and 55 series seals, when determining the position of the hard ring, place the water-retaining aluminum plate on the gland on the outer edge of the groove of the shaft sleeve matched with the positioning block (positioning fork), and attach the rotating seat ring and the hard ring to the graphite. on the ring and fixed on the shaft sleeve.
After placing the positioning plate, the compression amount is the designed compression amount, which is the thickness of the fork plate. Changing the compression amount can move the hard ring back and forth on the sleeve, and the movement amount is the changed compression amount.
For 60, 70, 85, 90, 120 series seals, the position of the hard ring is the position when the gland water retaining aluminum plate is attached to the fixed ring, and the compression amount is the thickness of the positioning block. If the compression amount is changed, the hard ring can be moved back and forth on the shaft sleeve,
The movement amount is the change amount of the compression amount, the forward movement compression amount increases, and the backward movement compression amount decreases.