CN206617194U - Burner honeycomb spiral radial brush broach split mechanical seals - Google Patents

Abstract

A kind of burner honeycomb spiral radial brush broach split mechanical seals of the utility model, including：Sleeve assembly and honeycomb seal body component, and the drive end brush seal assembly and impeller end brush seal assembly that the honeycomb seal body component two ends are set, original seal length is set to nearly double, sealing effectiveness effectively is enhanced, the sleeve assembly, honeycomb seal body component, drive end brush seal assembly and impeller end brush seal assembly are split type structure.Each component uses split type structure, and the scope of application is wider；Axle sleeve uses dissection type, closed by handle at sleeve outer circle and end face two, add the intensity of axle sleeve, it is therefore prevented that because being separated making a concerted effort inadequate when axle sleeve high speed rotates, and axle sleeve centre and drive end are equipped with boss, pass through the helicla flute and sealing tooth set on its stage casing boss, and set groove to be engaged with impeller end brush seal assembly at impeller back, original seal length is nearly doubled, sealing effectiveness is greatly enhanced, structure is novel, practical.

Description

Burner honeycomb spiral radial brush broach split mechanical seals

Technical field：

The utility model is related to technical field of sealing technology, and in particular to a kind of burner honeycomb spiral radial brush broach split mechanical seals.

Background technology：

At present, in the turbomachine equipment such as gas turbine, steam turbine, compressor and turbine pump, most common sealing is Labyrinth seal, but labyrinth seal interstitial fluid exciting is the turbomachines such as gas turbine, steam turbine, centrifugal compressor generally deposits The problem of without easily solving.In particular with turbomachine towards it is efficient, stably, the development in high-power direction, traditional broach The harm of seal clearance flow induced vibrations becomes increasingly conspicuous.The leakage rate of seal clearance is reduced, suppresses the flow induced vibrations of seal clearance, really Protect the stability of unit operation, it has also become one of key technology of modern turbomachine development.

In engineering practice, honeycomb seal can effectively reduce exciting, but when very high by sealed gas dust content, honeycomb It can be filled to lose sealing effectiveness quickly.And common honeycomb seal axle sleeve is through-type, causes in sealing, there is part Sealing gas is not to enter honeycomb hole expansion decompression but directly overflowed along smooth sleeve outer circle, have impact on sealing effectiveness.

Still further aspect, the sealing steam loss of equipment shaft end is also many compressors and the problem of steam turbine is present greatly, adopts The sealing effectiveness of serrate-type steam seal is undesirable, is usually caused by excessive gaps, and the loss caused by excessive gaps The 50% of steam turbine total energy loss can be accounted for.In fact, traditional labyrinth seal has small gap when mounted, but in mistake Under the operating modes such as critical speed, sealing tooth is easy to be worn or lodged so that seal clearance expands rapidly in a short time, causes Shaft end leakage is serious, a large amount of aqueous in lubricating oil, influences sealing effectiveness.

And some equipment limited by structure can not remove impeller change sealing, thus can not mounting sleeve, by labyrinth seal When directly coordinating with machine spindle, machine spindle damage is easily caused, maintenance of equipment is difficult, and the operation to factory is brought greatly Inconvenience.

It is, therefore, desirable to provide a kind of more applicable burner honeycomb spiral radial brush broach split mechanical seals, to overcome drawbacks described above.

Utility model content：

The purpose of this utility model is to provide a kind of burner honeycomb spiral radial brush broach split mechanical seals, can eliminate exciting The leakage rate of equipment is reduced to minimum simultaneously, can also prevent a large amount of dust from entering, extension sealing service life.

To achieve the above object, the utility model uses following technical scheme：

The utility model provides a kind of burner honeycomb spiral radial brush broach split mechanical seals, including：Sleeve assembly and honeycomb are close Body component is sealed, the sleeve assembly is sleeved on main shaft, the sleeve assembly includes axle sleeve, the axle sleeve is split type structure, The axle sleeve stage casing, which is provided with first boss, the first boss, opens up screw mounting hole, and screw is plugged in the screw peace Fill in hole, axle sleeve is connected as an entirety, the axle sleeve is provided with second boss close to one end of axle platform, and it is described second convex Platform offers the first groove close to axle platform one end, and semi-loop is inlaid in first groove；

The honeycomb seal body component is split type structure, and it includes seal and lower seal, upper and lower seal Correspondence on honeycomb hole, the upper and lower seal is offered on inner hole wall and opens up screw mounting hole, screw is plugged in the screw peace Fill in hole, upper and lower seal is connected as an entirety, and upper and lower seal is enclosed located at sleeve outer circle, in upper and lower seal Upper circumference offers seal air admission hole, and the upper and lower seal both ends offer the second groove, drive end brush seal group Part is arranged close to drive in the second groove of pusher side, and impeller end brush seal assembly is arranged close to the second groove of impeller side In, positioning boss is additionally provided with the lower seal, to aid in lower seal to position in a device, the upper and lower sealing Body two ends are further opened with spring mounting hole, and spring mounting hole is connected with the second groove, and spring is arranged in the spring mounting hole；

The drive end brush seal assembly is split type structure, and it includes drive end seal, and drive end seal is remote One end from second boss is provided with the 3rd boss, and its other end is embedded with brush seal ring, the end of the brush seal ring It is in contact with the side of second boss, one end of the spring is resisted against the 3rd boss；

The impeller end brush seal assembly is split type structure, and it includes impeller end seal, in impeller end seal On be provided with isolation stomata, the isolation stomata is connected with the seal air admission hole, and the impeller end seal is close to second One end of boss is provided with the 4th boss, and when impeller back is plane, the other end of impeller end seal is provided with low tooth, Between the adjacent low tooth in part or end of the impeller end seal away from described axle sleeve one end is provided with brush seal ring, works as impeller When back is provided with four grooves, be arranged at intervals with high tooth and low tooth on the other end of impeller end seal, the low tooth in part and/ Or be provided between high tooth the end of brush seal ring or impeller end seal away from described axle sleeve one end be provided with it is brush close Seal ring, the high tooth is plugged in the 4th groove, and it is described isolation side of the stomata away from the axle sleeve at least provided with There is a high tooth, one end of the spring is resisted against the 4th boss.

The height of brush seal ring on the impeller end seal and the low tooth or high tooth it is highly consistent, when described The height of brush seal ring and the high tooth it is highly consistent when, it is recessed that the brush seal ring is plugged in the described 4th with high tooth In groove.

Low tooth is provided between the adjacent brush sealing ring in part of the drive end seal end setting-in.

The 3rd groove is opened up on the upper and lower seal, the 3rd groove is engaged with the first boss.

The isolation stomata gas outlet is arranged on one end of close axle sleeve on impeller end seal, and the isolation stomata exists The low tooth and the quantity of brush seal ring that impeller end seal is set close to axle sleeve side are less than what it was set away from axle sleeve side The quantity of low tooth and brush seal ring.

The gas outlet of the isolation stomata is provided between two low teeth.

The gas outlet of the isolation stomata is arranged between the high tooth and low tooth, and the high tooth adjacent with the gas outlet Positioned at side of the gas outlet away from axle sleeve.

The semi-loop is split type structure, and the end face of axle sleeve, and semi-loop when installing are put together on by screw The split surface of the relatively described axle sleeve of split surface is rotated by 90 ° angle.

Second groove is H types, and the 3rd boss and the 4th boss are flush-mounted in second groove respectively, to institute State drive end seal and the progress of impeller end brush seal body is spacing.

The seal air admission hole number set on the lower seal is more than the seal air admission hole set on upper seal Number.

The spring is cylinder or butterfly.

The first boss is cylindrical to be provided with helicla flute, and the both sides of first boss are additionally provided with sealing tooth.

The axle sleeve be engaged with upper and lower seal endoporus it is cylindrical on be provided with sealing tooth, the sealing tooth insertion is upper, In the honeycomb hole opened up on lower seal.

The brush seal ring includes front panel, rear board and the bristle being clipped between front panel and rear board, described Bristle is made up of compact arranged fine wire, and the fine wire material is cobalt-based, and its a diameter of 0.8-1.0mm.

The beneficial effect of the utility model burner honeycomb spiral radial brush broach split mechanical seals：Each component of the present apparatus is used and cutd open Fraction structure, it is adaptable to the turbomachine such as horizonally split formula gas turbine, steam turbine, compressor and turbine pump, is particularly suitable for use in Because impeller can not be dismantled, the difficult machinery of conventional seals is installed, the scope of application is wider；Axle sleeve uses dissection type, by axle sleeve outside Conjunction at circle and end face two, the intensity of axle sleeve is added, it is therefore prevented that because being separated making a concerted effort inadequate when axle sleeve rotates at a high speed, and axle Boss is equipped with drive end in the middle of set, is set by the helicla flute and sealing tooth set on its stage casing boss, and at impeller back Put groove to be engaged with impeller end brush seal assembly, original seal length is nearly doubled, sealing effectiveness is greatly enhanced；Every Main shaft is led directly to by common middle part to be changed to laterally be passed through brush seal, extend isolation gas and the distance on the outside of sealing from stomata, Prevent too short because sealing outer lateral extent, seal outer collateral resistance and not enough cause isolation gas reversely to flow out, and the outlet that stomata will be isolated Impeller end seal end face is arranged at, the brush filament of brush seal ring can be closely purged, dust impurity is reduced in medium in brush filament On adhesion amount, extend the service life of brush seal ring, it is more economical practical；The sealing tooth insertion honeycomb that sleeve outer circle is set Hole, solves the problem of through-type axle sleeve amount of leakage is big；By setting brush seal in honeycomb seal both sides, effectively by medium In impurity barrier outside, can prevent excessive impurity from entering honeycomb seal so as to blocking honeycomb hole, cause seal failure, structure is new Grain husk, it is practical.

Brief description of the drawings：

Fig. 1 is the revolved sectional view of the burner honeycomb spiral radial brush broach split mechanical seals of embodiment one；

Fig. 2 is Fig. 1 use state figure；

Fig. 3 is the sectional view in A-A faces in Fig. 1；

Fig. 4 is the right view of sleeve assembly；

Fig. 5 is the sectional view of sleeve assembly；

Fig. 6 is the sectional view in C-C faces in Fig. 5；

Fig. 7 is the structural representation of impeller end brush seal assembly in Fig. 2；

Fig. 8 is the sectional view in B-B faces in Fig. 7；

Fig. 9 is the structural representation of drive end brush seal assembly；

Figure 10 is the revolved sectional view of burner honeycomb spiral radial brush broach split mechanical seals in embodiment two；

Figure 11 is Figure 10 use state figure；

Figure 12 is the structural representation of impeller end brush seal assembly in Figure 10；

Figure 13 is the sectional view in D-D faces in Figure 12；

In figure：1- sleeve assemblies, 2- honeycomb seal body components, 3- drive end brush seal assemblies, 4- impeller ends are brush close Sealing assembly, 5- impellers, 6- axle platforms, 7- axle sleeves, 8- first boss, 9- screw mounting holes, 10- screws, 11- helicla flutes, 12- sealings Tooth, 13- second boss, the grooves of 14- first, 15- semi-loops, the upper seals of 16-, 17- lower seals, 18- seal air admission holes, The grooves of 19- second, 20- positioning boss, the grooves of 21- the 3rd, 22- drive end seals, the boss of 23- the 3rd, 24- brush seals Ring, 25- bristles, 26- spring mounting holes, 27- springs, 28- impeller end seals, the boss of 29- the 4th, the low teeth of 30-, 31- the 4th Groove, the high teeth of 32-, 33- isolation stomatas.

Embodiment：

With reference to embodiment, the utility model is described in further detail.

As shown in Figure 1, Figure 2, shown in Figure 10 and Figure 11, a kind of burner honeycomb spiral radial brush broach split mechanical seals, including：Axle sleeve group Part 1 and honeycomb seal body component 2, and the drive end brush seal assembly 3 and impeller that the two ends of honeycomb seal body component 2 are set Brush seal assembly 4 is held, original seal length is nearly doubled, effectively enhances sealing effectiveness, the sleeve assembly 1, honeybee Nest seal component 2, drive end brush seal assembly 3 and impeller end brush seal assembly 4 are split type structure.

As shown in Fig. 4~Fig. 6, the sleeve assembly 1 is sleeved on main shaft, by the impeller 5 and axle platform 6 at its two ends to axle sleeve Component 1 carries out spacing, and the sleeve assembly 1 includes axle sleeve 7, and the axle sleeve 7 is split type structure, and the stage casing of axle sleeve 7 is set Have and open up screw mounting hole 9 in first boss 8, the first boss 8, screw 10 is plugged in the screw mounting hole 9, by axle Set 7 is connected as an entirety, and the first boss 8 is cylindrical to be provided with helicla flute 11, and when the shaft rotates, helicla flute 11 is for filling The full fluid in seal clearance produces pumping pressure, with being balanced each other by sealed pressure medium, so as to prevent to sew, first Sealing tooth 12 is additionally provided with the side wall of boss 8, sealed total length is extended, the axle sleeve 7 is set close to one end of axle platform 6 There is second boss 13, and second boss 13 offers the first groove 14 close to the one end of axle platform 6, semi-loop 15 is inlaid in described first In groove 14, the semi-loop 15 is split type structure, and when installing the semi-loop 15 split surface relatively described axle sleeve 7 Split surface is rotated by 90 ° angle, and the semi-loop 15 puts together on the end face of axle sleeve 7 by screw 10, with being integrated by the locking of screw 10 The collective effect of first boss 8, to ensure two valve axle sleeves fasten intensity so that axle sleeve 7 will not because equipment rotate produce Power and separate, influence equipment use.

As shown in figure 3, the honeycomb seal body component 2 includes upper seal 16 and lower seal 17, upper and lower seal Inner hole wall offers correspondence on honeycomb hole, the upper and lower seal and opens up screw mounting hole 9, and screw 10 is plugged in the screw In mounting hole 9, upper and lower seal is connected as an entirety, and upper and lower seal encloses cylindrical located at axle sleeve 7, upper and lower close The number of seal air admission hole 18 set on seal air admission hole 18, and the lower seal 17 is circumferentially offered on envelope body to be more than The number of seal air admission hole 18 set on upper seal 16, as shown in Figure 1, Figure 2, shown in Figure 10 and Figure 11, the upper and lower seal Both ends offer the second groove 19, during actual job, be milled out in the end of upper and lower seal by milling cutter it is T-shaped Groove, and the place connected in T-slot with end face sets gap so that whole second groove 19 is in H types, drive end brush seal group Part 3 is arranged close in the second groove 19 of the side of axle platform 6, and impeller end brush seal assembly 4 is arranged close to the second of the side of impeller 5 In groove 19, the locating slot phase in positioning boss 20, the positioning boss 20 and equipment is additionally provided with the lower seal 17 Coordinate, to aid in the positioning of lower seal 17 in a device, spring mounting hole is further opened with the upper and lower seal two ends 26, the spring mounting hole 26 is connected with the second groove 29, and spring 27 is arranged in the spring mounting hole 26, and the one of spring 27 End is resisted against the impeller end brush seal assembly 4 and drive end brush seal assembly 3 respectively, on the upper and lower seal The 3rd groove 21 is opened up, the 3rd groove 21 is engaged with the first boss 8.

As shown in Figure 2 and Figure 5, the axle sleeve 7 with it is upper and lower sealing mates it is cylindrical on be also equipped with seal tooth 12, The sealing tooth 12 is embedded in the honeycomb hole opened up on upper and lower seal, it is to avoid the leakage that through-type axle sleeve is caused is excessive.

As shown in Fig. 2, Fig. 9 and Figure 10, the drive end brush seal assembly 3 includes drive end seal 22, drive end The one end of seal 22 is embedded with brush seal ring 24, can also be provided with low tooth 30 between the adjacent brush sealing ring 24 in part, The structure mixed using low tooth 30 and brush seal ring 24, or only in end of the drive end seal away from described axle sleeve one end Several brush seal rings 24 are set, and one end away from bristle 25 is provided with the 3rd boss 23, the 3rd boss 23 is flush-mounted in described In second groove 19, to carry out spacing, the bristle 25 and second boss of brush seal ring 24 to the drive end seal 22 13 side is in contact, and enters honeycomb hole with the dust and particle in block media；One end of spring 27 is resisted against the 3rd boss 23, the gap to ensure brush seal ring 24 and the side of second boss 13.

As shown in Fig. 2, Fig. 8 and Figure 10, the impeller end brush seal assembly 4 includes impeller end seal 28, in impeller End seal 28 on be provided with isolation stomata 33, isolation stomata 33 connected with the seal air admission hole 18 so that isolate gas by Laterally it is passed through, extends isolation gas and the distance on the outside of sealing, and then avoid isolation gas too near because of distance sealing outside, sealing is outer Collateral resistance is not enough, causes isolation gas to flow to sealing outside because sealing outer collateral resistance and being less than sealing inner side pressure medium, it is impossible to hinder Gear sealing inner side medium leakage, described one end of impeller end seal 28 is provided with the 4th boss 29, and the 4th boss 29 is flush-mounted in institute State in the second groove 19, spacing to be carried out to the impeller end brush seal body 28, the gas outlet of the isolation stomata 33 is set Put close to one end of axle sleeve on the impeller end seal 28, the air inlet of isolation stomata 33 is arranged on impeller end seal 28 The side of the 4th boss 29, one end of the spring 27 is resisted against the 4th boss 29, to ensure brush seal ring 24 and impeller 5 it Between gap；

In one embodiment, when as shown in Fig. 2 impeller back is provided with four grooves 31, as shown in Figure 7 and Figure 8, Be arranged at intervals with high tooth 32 and low tooth 30 on the end face of the other end of impeller end seal 28, the low tooth 30 in part and/or high tooth 32 it Between be provided with brush seal ring 24, the structure mixed using high and low tooth and brush seal ring 24, or only in impeller end seal 28 ends away from described one end of axle sleeve 7 are provided with several brush seal rings 24, and other positions are high and low tooth, the height Tooth 32 is plugged in the 4th groove 31, the height of the brush seal ring 24 and the height one of the low tooth 32 of tooth 30 or high Cause, and when the brush seal ring 24 height and the high tooth 32 it is highly consistent when, the bristle of the brush seal ring 24 25 are plugged in the 4th groove 31 with high tooth 32, and in the side of the isolation stomata 33 away from the axle sleeve 7 at least It is provided with one high tooth 32；And the low tooth that is set in impeller end seal 28 close to axle sleeve side of isolation stomata 33 and brush The quantity of sealing ring is less than the quantity of its low tooth and brush seal ring away from the setting of axle sleeve side, and specifically, isolates gas The gas outlet in hole 33 is provided between low tooth 30 and high tooth 32, therefore, from seal air admission hole enter isolation gas by every Guided from stomata 33 to low tooth 30 and high tooth 32, also, the high tooth 32 adjacent with the gas outlet is located at the gas outlet Side away from axle sleeve 7.

In another embodiment, as shown in Figure 10 and Figure 11, when the back of impeller 5 is plane, as shown in Figure 12 and Figure 13, leaf Wheel end seal 28 end face corresponding with the back of impeller 5 is then set to low tooth 30, between the adjacent low tooth 30 in part or leaf Wheel end of the end seal 28 away from described one end of axle sleeve 7 is provided with several brush seal rings 24, using low tooth 30 and brush The structure that sealing ring 24 is mixed, the height of brush seal ring 24 and low tooth 30 it is highly consistent, and the isolation stomata 33 is in leaf The low tooth and the quantity of brush seal ring that wheel end seal 28 is set close to axle sleeve side are less than what it was set away from axle sleeve side The quantity of low tooth and brush seal ring, specifically, the gas outlet of isolation stomata 33 are provided between two low teeth 30, Therefore, the isolation gas entered from seal air admission hole is guided to two adjacent low teeth by isolating stomata 33.

As the further optimization of embodiment, the tiltable of isolation stomata 33 is set, and the gas outlet of isolation stomata is located at The oblique upper of air inlet, it is to avoid bristle 25 is close to isolation stomata 33 and exported, is because the intensity of bristle 25 does not have high tooth or low tooth Height, for a long time when being purged, can be easily damaged bristle 25, and directly wash away lower bristle in swiftly flowing gas to produce Raw very macrobending, so that seal clearance becomes big, enhances sealed intensity, and the bristle 25 of high tooth 32 and brush seal ring 24 is equal Coordinate with the 4th groove 31, play a part of Drain Resistance, medium can both be prevented to enter sealing, can be blown again with spacer medium Walk to be deposited on the dust on the bristle 25 of brush seal ring 24, prevent bristle 25 too fast and paste dead by dust, extension is sealedly used Life-span.

The spring 26 is cylinder or butterfly.

The brush seal ring 24 includes front panel, rear board and the bristle being clipped between front panel and rear board, institute State bristle to be made up of compact arranged fine wire, the fine wire material is cobalt-based, and its a diameter of 0.8-1.0mm, carefully Close between wire mutually to press, so fine and close fine wire has blocked the leakage of working medium, is exactly that one end is branch per one metal wire The beam of point, there is fabulous elasticity, and they and rotor are collided when grinding, and brush can be difficult to be worn away with elastic yield, it is ensured that equipment Safe operation under small―gap suture even zero clearance, as long as and conventional rigid gland sealing gear will be ground off quickly with rotor grazing.I.e. Just when equipment crosses critical speed and variable working condition, wire, which can be followed, is engaged workpiece yielding, but oneself will not wear and tear, and treats that equipment is steady After fixed, recover good sealing property again.And the fine wire in dense arrangement mainly occurs for the leakage of brush seal ring 24 Between in the micro gap that is formed, the zigzag path that these gaps are formed ensure that the inhomogeneities of fluid wherein, make fluid Sealing effect is produced from, so as to effectively reduce leakage.

Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than it is limited System, although the utility model is described in detail with reference to above-described embodiment, those of ordinary skill in the art should manage Solution：Embodiment of the present utility model can still be modified or equivalent substitution, and without departing from the utility model Any modification of spirit and scope or equivalent substitution, it all should cover among present claims scope.

Claims (10)

1. a kind of burner honeycomb spiral radial brush broach split mechanical seals, it is characterised in that：Including：Sleeve assembly and honeycomb seal body group Part, the sleeve assembly is sleeved on main shaft, and the sleeve assembly includes axle sleeve, and the axle sleeve is split type structure, the axle Set stage casing, which is provided with first boss, the first boss, opens up screw mounting hole, and screw is plugged in the screw mounting hole, Axle sleeve is connected as an entirety, the axle sleeve is provided with second boss close to one end of axle platform, and the second boss is close Axle platform one end offers the first groove, and semi-loop is inlaid in first groove；

The honeycomb seal body component is split type structure, and it includes seal and lower seal, the endoporus of upper and lower seal Correspondence on honeycomb hole, the upper and lower seal is offered on wall and opens up screw mounting hole, screw is plugged in the screw mounting hole In, upper and lower seal is connected as an entirety, and upper and lower seal is enclosed located at sleeve outer circle, in upper and lower seal last week To seal air admission hole is offered, the upper and lower seal both ends offer the second groove, drive end brush seal assembly peace It is installed adjacent to drive in the second groove of pusher side, impeller end brush seal assembly is arranged close in the second groove of impeller side, Positioning boss is additionally provided with the lower seal, to aid in lower seal to position in a device, the upper and lower seal two End is further opened with spring mounting hole, and spring mounting hole is connected with the second groove, and spring is arranged in the spring mounting hole；

The drive end brush seal assembly is split type structure, and it includes drive end seal, and drive end seal is away from the One end of two boss is provided with the 3rd boss, and its other end is embedded with brush seal ring, the end of the brush seal ring and the The side of two boss is in contact, and one end of the spring is resisted against the 3rd boss；

The impeller end brush seal assembly is split type structure, and it includes impeller end seal, is set on impeller end seal Isolation stomata is equipped with, the isolation stomata is connected with the seal air admission hole, and the impeller end seal is close to second boss One end be provided with the 4th boss, when impeller back be plane when, the other end of impeller end seal is provided with low tooth, part Between adjacent low tooth or end of the impeller end seal away from described axle sleeve one end is provided with brush seal ring, when impeller back When being provided with four grooves, high tooth and low tooth, the low tooth in part and/or height are arranged at intervals with the other end of impeller end seal The end of brush seal ring or impeller end seal away from described axle sleeve one end is provided between tooth and is provided with brush seal ring, The high tooth is plugged in the 4th groove, and in the side of the isolation stomata away from the axle sleeve at least provided with one High tooth, one end of the spring is resisted against the 4th boss.

2. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：The impeller Hold brush seal ring on seal height and the low tooth or high tooth it is highly consistent, when the height of the brush seal ring With the high tooth it is highly consistent when, the brush seal ring and high tooth are plugged in the 4th groove.

3. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：The driving Low tooth is provided between the adjacent brush sealing ring in part of end seal end setting-in.

4. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：The isolation Stomata gas outlet is arranged on impeller end seal close to one end of axle sleeve, and the isolation stomata is close in impeller end seal The low tooth and the quantity of brush seal ring that axle sleeve side is set are less than its low tooth and brush seal ring for being set away from axle sleeve side Quantity.

5. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：The isolation The gas outlet of stomata is provided between two low teeth.

6. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：The isolation The gas outlet of stomata is arranged between the high tooth and low tooth, and the high tooth position adjacent with the gas outlet is remote in the gas outlet The side covered off axis.

7. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：It is described half-open Ring is split type structure, put together on the end face of axle sleeve by screw, and the relatively described axle sleeve of split surface of the semi-loop is cutd open Facet is rotated by 90 ° angle.

8. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：Described second Groove is H types, and the 3rd boss and the 4th boss be flush-mounted in second groove respectively, to the drive end seal and Impeller end brush seal body carries out spacing.

9. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：Described first Boss is cylindrical to be provided with helicla flute, and the both sides of first boss are additionally provided with sealing tooth.

10. a kind of burner honeycomb spiral radial brush broach split mechanical seals according to claim 1, it is characterised in that：Described One boss is cylindrical to be provided with helicla flute, and the both sides of first boss are additionally provided with sealing tooth；The axle sleeve matches with upper and lower seal Sealing tooth is provided with the outer wall of conjunction, the sealing tooth is embedded in upper and lower seal.