CN210920170U - Sealing device for flue gate valve - Google Patents

Abstract

The utility model discloses a sealing device for flue flashboard valve mainly relates to sealing device technical field, sets up between flue and flashboard, including radial seal unit and end face seal unit, the radial seal unit is including hard seal and soft seal, and hard seal includes that the conical surface seals and is used for compressing tightly the unit that compresses tightly of flashboard, and soft seal includes that the interval sets up a plurality of radial seal circle on the radial surface of flashboard, and the end face seal unit includes two end face seal rings and two sealing washers. The utility model discloses overall structure sets up radial seal unit and end face seal unit, and radial seal unit is sealed with soft including hard sealing again, uses hard sealing and soft complementary combined type of sealing sealed, specifically adopts the conical surface sealed and compresses tightly the unit and mutually support, forms hard sealing, and radial seal circle and end face seal circle in addition, the combination of double seal mode is sealed thoroughly, and is sealed tight, and harmful gas is difficult for leaking.

Description

Sealing device for flue gate valve

Technical Field

The utility model relates to a sealing device, especially a sealing device for flue flashboard valve.

Background

The flue gas temperature that desulfurization system produced is higher, and because flue flashboard valve is in the harsh environment of the dusty of high temperature for a long time in the flue of flue gas circulation, can lead to the ageing inefficacy of the sealing strip that plays the sealed effect on the valve, and the sealed mode of current flue flashboard valve is single, and the phenomenon sealed untight appears in the ageing back of sealing element, and harmful gas easily leaks, consequently designs one kind and uses hard sealed and soft complementary combined type of sealing to seal to be indispensable.

SUMMERY OF THE UTILITY MODEL

The utility model provides an use hard sealing and soft complementary sealing device who is used for flue flashboard valve door of sealing has solved the sealing method singleness that exists among the prior art, and the problem of the phenomenon that sealed not tight, harmful gas easily leaked appears in the ageing back of sealing element.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the setting is between flue and flashboard, including radial seal unit and end face seal unit, the flashboard sets up in the flashboard body, the flashboard is U-shaped plate column structure, and the latter half surface is the conical surface, the lower extreme contact of flue the latter half and flashboard, and the latter half internal surface is the conical surface that corresponds with the conical surface of flashboard, radial seal unit is including hard sealing and soft sealing, hard sealing is including the conical surface seal with be used for compressing tightly the unit that compresses tightly of flashboard, the conical surface seal is the cooperation of the conical surface of flashboard and the conical surface of flue, soft sealing includes that the interval sets up a plurality of radial seal circle on the flashboard radial surface, end face seal unit includes.

Preferably, the compressing unit comprises a plurality of nut and bolt combinations, the bolts are screwed into the flashboard body and can be contacted with the flashboard, and the nuts are sleeved on the bolts and are positioned outside the flashboard body.

Preferably, the number of the nut and bolt combination is 4-8, and the nut and bolt combination is evenly arranged along the circumference periphery of the flue.

Preferably, the two end face sealing rings are symmetrically arranged on the two end faces of the gate plate, the two sealing rings are symmetrically arranged on the upper half parts of the two end faces of the gate plate and are located above the end face sealing rings, and the sealing rings are of semi-ring structures.

Preferably, a plurality of annular grooves are arranged on the radial surface of the flashboard, and the radial sealing ring is tightly arranged in the annular grooves.

Preferably, the number of the plurality of annular grooves is the same as that of the plurality of radial sealing rings, and the number of the plurality of annular grooves is 2-3.

Preferably, the radial sealing ring, the end face sealing ring and the sealing ring are made of high-temperature-resistant materials.

The utility model adopts the above structure, following advantage has: overall structure sets up radial seal unit and end face seal unit, and radial seal unit is sealed with soft including hard sealing again, uses hard sealing and soft complementary combined type of sealing sealed, specifically adopts the conical surface sealed and compresses tightly the unit and mutually supports, forms hard sealing, including radial seal circle and end face seal circle, the combination of double seal mode, sealed thoroughly, sealed tight, harmful gas is difficult for leaking.

Drawings

FIG. 1 is a schematic side view of the present invention;

fig. 2 is a schematic view of the vertical structure of the present invention.

In the figure, 1, a nut; 2. a bolt; 3. a seal ring; 4. an end face seal ring; 5. a radial seal ring; 6. a conical surface of the gate plate; 7. a conical surface of the flue; 8. a flue; 9. a shutter plate; 10. a shutter body.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

As shown in fig. 1 and 2, the flue is arranged between a flue 8 and a gate 9, the whole body comprises a radial sealing unit and an end face sealing unit, the gate 9 is arranged in a gate body 10, the gate 9 is in a U-shaped plate structure, the surface of the lower half part of the gate is a conical surface, the lower half part of the flue 8 is contacted with the lower end of the gate 9, the inner surface of the lower half part of the flue is a conical surface corresponding to the conical surface 6 of the gate, the radial sealing unit comprises a hard seal and a soft seal, the hard seal comprises a conical surface seal and a pressing unit for pressing the gate 9, the pressing unit comprises a plurality of nut 1 and bolt 2 combinations, the bolt 2 is screwed into the gate body 10 and can be contacted with the gate 9, the nut 1 is sleeved on the bolt 2 and is positioned outside the gate body 10, the number of the nut 1 and bolt 2 combinations is 4-8, and the nut 1 and the bolt 2 combinations are uniformly, soft seal sets up a plurality of radial seal ring 5 on the radial surface of flashboard 9 including the interval, flashboard 9 is provided with a plurality of ring groove on the radial surface, radial seal ring 5 compresses tightly the setting at the ring groove, a plurality of ring groove and a plurality of radial seal ring 5 quantity are the same, it is all 2 ~ 3, end face seal unit includes two end face seal ring 4 and two sealing washer 3, two end face seal ring 4 symmetries set up on two terminal surfaces of flashboard 9, two sealing washer 3 symmetries set up at the first half of two terminal surfaces of flashboard 9 and are located end face seal ring 4's top, sealing washer 3 is the semi-ring structure, radial seal ring 5, end face seal ring 4 and sealing washer 3 all adopt the sealing washer of high temperature resistant material.

When the flashboard 9 needs to be opened, loosen the nut 1 and the bolt 2, upwards mention the flashboard 9 can, when the flashboard 9 needs to be closed, put down the flashboard 9 downwards, wait the conical surface 6 of the flashboard of flashboard 9 lower extreme and the conical surface 7 of flue contact the back, a plurality of bolts of rotation 2 compress tightly the flashboard 9 in proper order, guarantee that the conical surface 6 of flashboard and the conical surface 7 of flue closely cooperate, radial seal ring 5 compresses tightly the setting and plays radial seal's effect with the conical surface cooperation together in the annular groove, simultaneously, end face seal ring 4 and sealing washer 3 play end face seal's effect.

The sealing ring 3, the end face sealing ring 4, the radial sealing ring 5, the nut 1 and the bolt 2 are all in the prior art.

The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (7)

1. A sealing device for a flue damper valve, comprising: the setting is between flue and flashboard, including radial seal unit and end face seal unit, the flashboard setting in the flashboard body, the flashboard be U-shaped plate column structure, and the latter half surface is the conical surface, flue the latter half with the lower extreme contact of flashboard, and the latter half internal surface be the conical surface that corresponds with the conical surface of flashboard, radial seal unit including hard seal and soft seal, hard seal including the conical surface seal with be used for compressing tightly the compressing unit of flashboard, the conical surface seal be the conical surface of flashboard with the cooperation of the conical surface of flue, soft seal include that the interval sets up the radial surface on a plurality of radial seal circle of flashboard, end face seal unit include two end face seal rings and two sealing washers.

2. The sealing device for a flue gate valve as recited in claim 1, wherein: the compressing unit comprises a plurality of nuts and bolt combinations, the bolts are screwed into the flashboard bodies and can be contacted with the flashboard bodies, and the nuts are sleeved on the bolts and are located outside the flashboard bodies.

3. The sealing device for a flue gate valve of claim 2, wherein: the number of the nut and bolt combination is 4-8, and the nut and bolt combination is uniformly distributed along the circumference periphery of the flue.

4. The sealing device for a flue gate valve as recited in claim 1, wherein: the two end face sealing rings are symmetrically arranged on the two end faces of the flashboard, the two sealing rings are symmetrically arranged on the upper half parts of the two end faces of the flashboard and are positioned above the end face sealing rings, and the sealing rings are of semi-ring structures.

5. The sealing device for a flue gate valve as recited in claim 1, wherein: the radial surface of flashboard on be provided with a plurality of annular grooves, radial sealing washer compress tightly the setting and be in annular groove in.

6. The sealing device for a flue gate valve of claim 5, wherein: the number of the plurality of annular grooves is the same as that of the plurality of radial sealing rings, and the number of the plurality of annular grooves is 2-3.

7. The sealing device for a flue gate valve according to claim 1, 4, 5 or 6, wherein: the radial sealing ring, the end face sealing ring and the sealing ring are made of high-temperature resistant materials.

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