CN218718766U - Baffle door rotating shaft sealing device - Google Patents

Abstract

Baffle door pivot sealing device. The traditional rotating shaft seal of the baffle door adopts simple packing seal, the packing has poor characteristics and no elasticity, is influenced by high-temperature fly ash, has extremely short service life and often causes problems soon after replacement. The utility model discloses the constitution includes: gu fixed ring (6) with move sealing ring (3), the fixed ring in-pressure have multilayer sealing ring (7), fixed ring on the welding have static sealing ring (5), move the sealing ring cover on door-hinge (1), move the inside of sealing ring with move the sealing ring with static sealing ring between be fixed with magnetism and inhale ring (4), static sealing ring on press gland (8). The utility model is used for the flapper door pivot is sealed.

Description

Baffle door rotating shaft sealing device

The technical field is as follows:

the utility model relates to a flapper door pivot sealing device.

Background art:

boiler of thermal power factory and other large-scale industrial boilers widely use all kinds of air door baffles, including three big fan advance, export baffle, air heater export one, overgrate air baffle, combustor hot overgrate air baffle, burn out air baffle, afterbody flue gas baffle, coal pulverizer cold, hot-blast baffle etc.. The air-smoke baffle door is used as a link and is connected with a powder making system and an air-smoke system of the whole boiler in a penetrating way, and plays important roles of adjusting the operation temperature, isolating the smoke system, isolating single equipment under sudden conditions and the like.

The working conditions of various flue gas baffles are generally severe, particularly the hot air baffles and the flue gas baffles are affected by high-temperature wind and smoke, the high-concentration dust carried by the flue gas baffles is washed away, the flue gas baffles are eroded by corrosive gas, the sealing is not tight, air leakage and ash leakage are caused, a lubricating system of a rotating shaft is polluted by fly ash after the sealing is damaged, the lubrication of a bearing is deteriorated, the bearing is jammed, the rotating shaft is jammed and bent, the operation adjustment operation is influenced, adverse consequences are brought to the steam temperature control, the combustion control and the like of the operation, and even serious consequences such as main steam over-temperature, boiler burning loss, high-temperature corrosion and the like are caused. Meanwhile, air leakage and ash leakage bring influence on equipment sanitation, cause pollution to the environment and need to invest a large amount of manpower and material resources to maintain the equipment.

At present, the traditional rotating shaft seal of the baffle door adopts simple packing seal, the packing has poor characteristics and no elasticity, is influenced by high-temperature fly ash, has extremely short service life and often causes problems soon after being replaced. The ash leakage causes poor bearing lubrication, bearing jamming and bending of the rotating shaft, so that adverse effects are brought to the adjustment and operation of operators while vicious circle and equipment are damaged.

The utility model has the following contents:

the utility model aims at providing a baffle door pivot sealing device in order to remedy the deficiency of the prior art.

The above purpose is realized by the following technical scheme:

the utility model provides a flapper door pivot sealing device, its constitution includes solid fixed ring and moves the sealing ring, the solid fixed ring in the internal pressure have the sealed lantern ring of multilayer, gu weld on the fixed ring have a static sealing ring, move the sealing ring cover on the door-hinge, move the inside of sealing ring with move the sealing ring with static sealing ring between be fixed with magnetism and inhale the ring, static sealing ring on the pressure have the gland.

The baffle door rotating shaft sealing device is characterized in that a holding pressing block is sleeved on the door shaft.

Has the advantages that:

1. the utility model is provided with the magnetic suction ring, which thoroughly solves the problems of poor sealing of the air door baffle, air leakage, dust leakage, bearing damage, blocking of the baffle and the like, and has simple structure, low manufacturing cost and excellent sealing performance; the high-temperature-resistant and wear-resistant sealing ring is high-temperature-resistant and wear-resistant, and meanwhile, the holding pressing block is arranged to clamp the movable sealing ring, so that sealing is enhanced, and long-term reliability can be kept; the phenomenon of air leakage and ash leakage of the boiler is effectively reduced, and the safety and reliability of the operation of the boiler are improved; effectively inhibits the leakage of the boiler fly ash.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

in the figure: 1. a door shaft; 2. tightly holding the pressing block; 3. a movable sealing ring; 4. a magnetic ring; 5. a static seal ring; 6. a fixing ring; 7. a sealing collar; 8. and (7) pressing the cover.

The specific implementation mode is as follows:

example 1:

referring to fig. 1, a flapper door pivot sealing device includes solid fixed ring 6 and movable sealing ring 3, the solid fixed ring in-pressed have multilayer sealing ring 7, gu weld on the fixed ring and have static sealing ring 5, movable sealing ring cover on the door-hinge 1, can rotate along with the axle, guarantee dynamic seal on the basis of static seal, the door-hinge cover has a pressure block 2 of holding tightly simultaneously, has the bolt hole on the movable sealing ring, make through the bolt and hold tightly the pressure block and press from both sides tight door-hinge, the inside of movable sealing ring with static sealing ring between be fixed with magnetism and inhale ring 4, static sealing ring on press the gland 8, compress tightly the sealing member through the gland, according to different operating modes, can adjust at any time.

Claims (2)

1. The utility model provides a flapper door pivot sealing device which constitutes including solid fixed ring and dynamic seal ring, the solid fixed ring in-pressure have the sealed lantern ring of multilayer, characterized by: the fixed ring is welded with a static sealing ring, the movable sealing ring is sleeved on the door shaft, a magnetic attraction ring is fixed between the inner part of the movable sealing ring and between the movable sealing ring and the static sealing ring, and a gland is pressed on the static sealing ring.

2. The flapper door spindle seal assembly of claim 1, wherein: the door spindle is sleeved with a holding pressing block.

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