CN213899888U - Carbon ring mechanical sealing device - Google Patents

Abstract

The utility model discloses a carbocycle mechanical seal device, include: shaft, axle sleeve and gland, be equipped with the axle sleeve sealing washer between axle sleeve and the shaft, the gland includes first half gland and the half gland of second, first half gland with connect through a plurality of round pin location and a plurality of mounting between the half gland of second, form the seal chamber between gland and the axle sleeve, be equipped with a plurality of ring channel that is parallel arrangement in the seal chamber, be equipped with a set of carbon ring subassembly in every ring channel to make and form labyrinth seal between gland and the axle sleeve, be equipped with isolation gas in the seal chamber, isolation gas's pressure is greater than by seal gas's pressure, the gland is equipped with isolation gas inlet passageway and isolation gas outlet passageway that link up mutually with the seal chamber to its sealing performance has been improved greatly, thereby can prevent to be caused the accident by the outside leakage of seal gas.

Description

Carbon ring mechanical sealing device

[ technical field ] A method for producing a semiconductor device

The utility model relates to a mechanical seal field especially relates to a carbocycle mechanical seal device.

[ background of the invention ]

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world.

When the sealed gas is toxic and harmful gas, the sealing performance requirement on the mechanical sealing device is extremely high, and if the sealing performance is not good, the toxic and harmful gas can leak to the outside, so that a leakage accident is caused.

Therefore, there is a need to provide a carbon ring mechanical seal device that solves the above technical problems.

[ Utility model ] content

In order to solve the technical problem, an object of the utility model is to provide a carbocycle mechanical seal device that sealing performance is excellent.

The utility model discloses the technical scheme who adopts does: a carbocyclic mechanical seal comprising: axle, axle sleeve and gland, be equipped with the axle sleeve sealing washer between axle sleeve and the axle, the gland includes first half minute gland and second half minute gland, first half minute gland with connect through a plurality of round pin location and a plurality of mounting between the second half minute gland, form the seal chamber between gland and the axle sleeve, be equipped with a plurality of ring channel that is parallel arrangement in the seal chamber, be equipped with a set of carbon ring subassembly in every ring channel to make and form labyrinth seal between gland and the axle sleeve, be equipped with isolation gas in the seal chamber, isolation gas's pressure is greater than by seal gas's pressure, the gland is equipped with isolation gas inlet channel and isolation gas outlet channel that link up mutually with the seal chamber.

Preferably, the utility model provides a carbocycle mechanical seal device further sets up to: every group carbon ring subassembly comprises three split type carbon ring spare, and every split type carbon ring spare includes carbocycle excircle groove spare and sets up elastic component and the carbocycle in carbocycle excircle groove spare.

Preferably, the utility model provides a carbocycle mechanical seal device further sets up to: the carbon ring assembly is connected with the gland through a stop piece.

Preferably, the utility model provides a carbocycle mechanical seal device further sets up to: the shaft sleeve sealing ring is an O-shaped ring.

Preferably, the utility model provides a carbocycle mechanical seal device further sets up to: the fixing piece is an inner hexagonal socket head cap screw.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a be equipped with the isolation gas at sealed intracavity, the pressure of isolation gas is greater than by sealed gaseous pressure, the gland is equipped with the isolation gas inlet channel and the isolation gas outlet channel who link up mutually with sealed chamber to its sealing performance has been improved greatly, thereby can prevent to be caused the accident by sealed gaseous outside leakage.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional structural view of a mechanical seal device for a middle carbon ring according to the present invention.

Fig. 2 is a schematic side view of the mechanical seal device for a middle carbon ring according to the present invention.

Fig. 3 is a schematic structural view of a carbon ring assembly.

In fig. 1 to 3: 1. the shaft comprises a shaft body, 2, a shaft sleeve, 20, a shaft sleeve sealing ring, 3, a gland, 30, a first half partial pressure cover, 31, a second half partial pressure cover, 32, a pin, 33, a fixing piece, 34, an isolation gas inlet channel, 4, a sealing cavity, 40, an annular groove, 5, a carbon ring assembly, 50, a split carbon ring assembly, 6, a stop piece, 7 and a positioning ring.

[ detailed description ] embodiments

A carbon ring mechanical seal according to the present invention is described in further detail below with reference to the following embodiments.

Referring to fig. 1 to 3, a carbon ring mechanical seal device includes: the shaft sealing ring sealing structure comprises a shaft 1, a shaft sleeve 2 and a gland 3, wherein a shaft sleeve sealing ring 20 is arranged between the shaft sleeve 2 and the shaft 1, and in the embodiment, the shaft sleeve sealing ring 20 is an O-shaped ring.

The gland 3 includes a first half gland 30 and a second half gland 31, the first half gland 30 and the second half gland 31 are positioned by a plurality of pins 32 and connected by a plurality of fixing members 33, in this embodiment, the fixing members 33 are socket head cap screws.

Form sealed chamber 4 between gland 3 and the axle sleeve 2, be equipped with a plurality of in the sealed chamber 4 and be parallel arrangement's ring channel 40, be equipped with a set of carbon ring subassembly 5 in every ring channel 40, every carbon ring subassembly 5 of group comprises three split carbon ring spare 50, and every split carbon ring spare 50 includes carbocycle excircle groove spare (not shown) and sets up elastic component (not shown) and carbocycle (not shown) in carbocycle excircle groove spare to form labyrinth seal between messenger gland 3 and the axle sleeve 2, be connected through stop plate 6 between carbon ring subassembly 5 and the gland 3, stop plate 6's effect prevents that carbon ring subassembly 5 from following axle sleeve 2 and rotating. In the present embodiment, the stopper 6 is disposed between two adjacent split-type carbon ring members 50, the seal chamber 4 is filled with a barrier gas having a pressure higher than that of the sealed gas, and the gland 3 is provided with a barrier gas inlet passage 34 and a barrier gas outlet passage (not shown) communicating with the seal chamber 4.

The utility model discloses well carbon ring mechanical seal device's theory of operation does: install holding ring 7 additional in one side of gland 3 during the transportation, all be connected through the mounting between holding ring 7 and gland 3 and the axle sleeve 2, transport the workplace after, pull down holding ring 7, the during operation, axle 1 rotates with axle sleeve 2, gland 3 and carbon ring subassembly 5 are static, form labyrinth seal between axle sleeve 2 and the gland 3, the during operation, need continuously let in isolation gas in the seal chamber 4, because isolation gas's pressure slightly is greater than by seal gas's pressure, consequently make by seal gas can not leak into the seal chamber.

To sum up, the utility model discloses a carbocycle mechanical seal device has improved its sealing performance greatly to can prevent to be leaked outward by sealed gas and cause the accident.

The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be applied, and are not intended to limit the present invention; it should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims (5)

1. A carbocyclic mechanical seal, comprising: axle, axle sleeve and gland, be equipped with the axle sleeve sealing washer between axle sleeve and the axle, the gland includes first half minute gland and second half minute gland, first half minute gland with connect through a plurality of round pin location and a plurality of mounting between the second half minute gland, form the seal chamber between gland and the axle sleeve, be equipped with a plurality of ring channel that is parallel arrangement in the seal chamber, be equipped with a set of carbon ring subassembly in every ring channel to make and form labyrinth seal between gland and the axle sleeve, be equipped with isolation gas in the seal chamber, isolation gas's pressure is greater than by seal gas's pressure, the gland is equipped with isolation gas inlet channel and isolation gas outlet channel that link up mutually with the seal chamber.

2. A carbocyclic mechanical seal according to claim 1, wherein: every group carbon ring subassembly comprises three split type carbon ring spare, and every split type carbon ring spare includes carbocycle excircle groove spare and sets up elastic component and the carbocycle in carbocycle excircle groove spare.

3. A carbocyclic mechanical seal according to claim 1, wherein: the carbon ring assembly is connected with the gland through a stop piece.

4. A carbocyclic mechanical seal according to claim 1, wherein: the shaft sleeve sealing ring is an O-shaped ring.

5. A carbocyclic mechanical seal according to claim 1, wherein: the fixing piece is an inner hexagonal socket head cap screw.

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