CN103867724B - A kind of multiple spot compresses high temperature resistant dynamic seal apparatus - Google Patents
A kind of multiple spot compresses high temperature resistant dynamic seal apparatus Download PDFInfo
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- CN103867724B CN103867724B CN201410127156.6A CN201410127156A CN103867724B CN 103867724 B CN103867724 B CN 103867724B CN 201410127156 A CN201410127156 A CN 201410127156A CN 103867724 B CN103867724 B CN 103867724B
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Abstract
The present invention relates to dynamic seal apparatus technical field, disclose a kind of multiple spot and compress high temperature resistant dynamic seal apparatus, described seal joint, in axial compression graphite packing group, makes the sealing surface close contact of graphite packing group and fixed body, and carries out flexibility fix by axially fastening bolt and fixed body; Described spring pressuring plate adopts wave structure, one end is fixed by the radial bolts hole of radial clamping bolt and seal joint, the other end soars, and fixed by the flexible contact of trough and graphite packing group, described spring pressuring plate presses graphite packing group and carries out radial direction evenly compression to it, makes internal surface and the rotating equipment sealing surface close contact of graphite packing group.Present invention achieves the static sealing to rotating equipment axis and radial compliance motive sealing; The graphite packing group resistance to high temperature adopted is good, can increase the working life of seal arrangement.The present invention is applicable to large high-temperature turning round equipment, has good market prospects.
Description
Technical field
The present invention relates to dynamic seal apparatus technical field, particularly a kind of multiple spot compresses high temperature resistant dynamic seal apparatus.
Background technique
The solid of rotation equipment equipment that normally an airtight and not stall is dynamic, the requirement of this kind equipment to sealing is very high, both the leakproofness ensureing sealing had been required, do not affect again it to rotate, existing motive sealing cannot realize sealing completely, air can not be avoided to enter or solid of rotation internal gas spilling, cause energy consumption to increase, heat utilization rate reduces.Current existence two kinds of sealing means, one is noncontact seal, i.e. labyrinth seal, this sealing due to the impact of the radial deflection and axial rotation that are subject to cylindrical shell, make fixing with rotating part between gap constantly increase, thus affect sealing effect; One is contact seal, the seal ring be connected due to cylindrical shell and the sealing compressing tablet be connected with fixed body are formed, sealing compressing tablet must outer power be pressed on seal ring by this sealing, and to seal ring infringement very greatly, Long-Time Service causes seal failure for external force extruding and hot environment.
Summary of the invention
The object of the invention is: be the technical problem that the sealing effect solving existing sealing means is undesirable, the invention provides a kind of multiple spot and compress high temperature resistant dynamic seal apparatus, the axis and radial seal that achieve rotating equipment is compressed by multiple spot, good sealing effect, and the graphite packing group adopted has high-temperature stability, and the present invention is applicable to large high-temperature turning round equipment.
For achieving the above object, the technical solution used in the present invention is: provide a kind of multiple spot and compress high temperature resistant dynamic seal apparatus, comprising: seal joint 1, clamping bolt, spring pressuring plate 3, graphite packing group 4; The axial circumference of described seal joint 1 has stepped cylindrical hole, seal joint 1 is in axial compression graphite packing group 4, make the sealing surface close contact of graphite packing group 4 and fixed body 6, and carry out flexibility with fixed body 6 fix by axially fastening bolt 8 and compression spring 7, realize the flexible static sealing of axis; The radial circumference of described seal joint 1 evenly offers bolt hole; Described spring pressuring plate 3 adopts wave structure, one end is fixed with the radial bolts hole of seal joint 1 by radial clamping bolt 2, the other end soars, and fixed by the flexible contact of trough and graphite packing group 4, described spring pressuring plate 3 presses graphite packing group 4 and carries out radial direction evenly compression to it, make internal surface and the rotating equipment 5 sealing surface close contact of graphite packing group 4, realize radial flexible dynamic seal (packing).
Wherein: described graphite packing group 4 is made up of 2 ~ 4 graphite plate roots.
Wherein: the trough amplitude of described spring pressuring plate 3 increases gradually, and each trough is corresponding with the center line of every root graphite packing, can ensure that each packing is even, equal with the pressure of rotating equipment 5 point of contact, enhance the effect of motive sealing.
Wherein: the material of described spring pressuring plate 3 adopts 65Mn.
Wherein: described radial clamping bolt 2 and axially fasten bolt 8 and all adopt hexagon socket head cap screw, installing space but also the easy maintenance and replacement of equipment had not only been saved.
Wherein: the radial force of the spring pressuring plate 3 suffered by described graphite packing group 4 is greater than the axial force of seal joint 1 pair of graphite packing group 4, its dynamic radial seal and axial static sealing is ensured.
Wherein: around the annulus of described seal joint 1, radial direction offers bolt hole by 2 ° ~ 4 °, and the quantity of described bolt hole is compression and counts.The angle of being separated by is 2 ° ~ 4 °, is the best angle of sealing, makes sealing effect best.
Wherein: the applicable working condition temperature range that described multiple spot compresses high temperature resistant dynamic seal apparatus is 300 DEG C ~ 500 DEG C, while, rotating equipment 5 is with the speed uniform rotation of 5 ~ 20 rad/min.
Wherein: the annulus peripheral shaft of described seal joint 1 opens stepped cylindrical hole to by 10 ° ~ 15 °, and its angle is determined according to the load of seal joint 1.
Wherein: described ladder circular hole is installation for the ease of applying hexagon socket head cap screw and fixing, structure be the cylindrical hole of two sections of different-diameters, the cylindrical hole that diameter is large is greater than the head diameter of hexagon socket head cap screw, and its length equals the height summation of nut and compression spring; The cylindrical hole that diameter is little is greater than the diameter of bolt shank, and its length is less than the length of bolt shank.
The invention has the beneficial effects as follows: seal joint axial compression graphite packing group sealing of the present invention, achieves the static sealing to rotating equipment axis; Adopt spring pressuring plate to press graphite packing group, achieve the radial compliance motive sealing to rotating equipment; The graphite packing group resistance to high temperature adopted is good, can increase the working life of seal arrangement.The present invention is applicable to large high-temperature turning round equipment, has good market prospects.
Accompanying drawing explanation
Fig. 1 is the structural representation that multiple spot of the present invention compresses high temperature resistant dynamic seal apparatus.
Fig. 2 is the mounting point schematic diagram that multiple spot of the present invention compresses high temperature resistant dynamic seal apparatus.
Fig. 3 is the partial structurtes schematic diagram that clamping bolt is fixed on seal joint.
Fig. 4 is the structural representation of shoulder hole of the present invention.
Accompanying drawing identifies: 1-seal joint, and the radial clamping bolt of 2-, 3-spring pressuring plate, 4-graphite packing group, 5-rotating equipment, 6-fixed body, 7-compression spring, 8-axially fastens bolt.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
With reference to Fig. 1, a kind of multiple spot of the present invention compresses high temperature resistant dynamic seal apparatus, comprising: seal joint 1, clamping bolt, spring pressuring plate 3, graphite packing group 4; The axial circumference of described seal joint 1 has stepped cylindrical hole, seal joint 1 is in axial compression graphite packing group 4, make the sealing surface close contact of graphite packing group 4 and fixed body 6, and carry out flexibility with fixed body 6 fix by axially fastening bolt 8 and compression spring 7, realize the flexible static sealing of axis; The radial circumference of described seal joint 1 evenly offers bolt hole; Described spring pressuring plate 3 adopts wave structure, one end is fixed with the radial bolts hole of seal joint 1 by radial clamping bolt 2, the other end soars, and fixed by the flexible contact of trough and graphite packing group 4, described spring pressuring plate 3 presses graphite packing group 4 and carries out radial direction evenly compression to it, make internal surface and the rotating equipment 5 sealing surface close contact of graphite packing group 4, realize radial flexible dynamic seal (packing).
Described graphite packing group 4 is made up of 2 ~ 4 graphite plate roots.
The trough amplitude of described spring pressuring plate 3 increases gradually, and each trough is corresponding with the center line of every root graphite packing, can ensure that each packing is even, equal with the pressure of rotating equipment 5 point of contact, enhance the effect of motive sealing.。
The material of described spring pressuring plate 3 adopts 65Mn.
Described radial clamping bolt 2 and axially fasten bolt 8 and all adopt hexagon socket head cap screw, had not only saved installing space but also the easy maintenance and replacement of equipment.
The radial force of the spring pressuring plate 3 suffered by described graphite packing group 4 is greater than the axial force of seal joint 1 pair of graphite packing group 4, ensures its dynamic radial seal and axial static sealing.
Around the annulus of described seal joint 1, radial direction offers bolt hole by 2 ° ~ 4 °, and the quantity of described bolt hole is compression and counts.The angle of being separated by is 2 ° ~ 4 °, is the best angle of sealing, makes sealing effect best.
The applicable working condition temperature range that described multiple spot compresses high temperature resistant dynamic seal apparatus is 300 DEG C ~ 500 DEG C, and rotating equipment 5 is with the speed uniform rotation of 5 ~ 20 rad/min simultaneously.
The annulus peripheral shaft of described seal joint 1 opens stepped cylindrical hole to by 10 ° ~ 15 °, and its angle is determined according to the load of seal joint 1.
Described ladder circular hole is installation for the ease of applying hexagon socket head cap screw and fixing, structure be the cylindrical hole of two sections of different-diameters, the cylindrical hole that diameter is large is greater than the head diameter of hexagon socket head cap screw, and its length equals the height summation of nut and compression spring; The cylindrical hole that diameter is little is greater than the diameter of bolt shank, and its length is less than the length of bolt shank.
Embodiment 1(stresses the application of the present invention in rotary kiln pyrogenation stove)
A kind of multiple spot compresses high temperature resistant dynamic seal apparatus and is applied in rotary kiln pyrogenation stove, in described rotary kiln pyrogenation stove, pyrolytic reaction occurs, and reaction temperature, at 400 DEG C ~ 450 DEG C, is rotated with the speed of 6 ~ 8 rad/min simultaneously.
The present invention seals between rotary kiln pyrogenation stove two ends and fixed body 6, (between the sealing surface of rotating equipment and the interior surface of contact of graphite packing group, pass through flexible contact, when the roughness that the outer surface of rotating equipment causes due to processing is uneven, the sealing that the sealing surface of rotating equipment and the interior surface of contact of graphite packing group also can be made to keep good contacts, and can also ensure the normal rotation of the equipment of walking around.) the axial circumference of described seal joint 1 has ladder circular hole, compression spring 7 is installed and is connected with the bolt hole of fixed body 6 by axially fastening bolt 8, carry out flexibility to fix, by axially fastening bolt 8 pairs of graphite packing group 4 axial compression around annulus, make graphite packing group 4 and the sealing surface close contact of fixed body 6, ensure axial static sealing; Awave spring pressuring plate 3 is locked by radial clamping bolt 2 by seal joint 1, make each trough corresponding with the center line of every root graphite packing, make the internal surface of graphite packing group 4 and the sealing surface close contact of rotary kiln pyrogenation stove, ensure that the flexible radial force to graphite packing group 4, enhance the effect of dynamic seal (packing).The radial force of described spring pressuring plate 3 is greater than the axial force of seal joint 1 pair of graphite packing group 4, ensure that radial dynamic seal (packing).
Structure of the present invention is simple, and good sealing effect, serves very important effect in pyrolysis system.
Embodiment 2(stresses the application of the present invention in the heating and stirring tank equipment of sludge treating system)
Reaction temperature in heating and stirring tank is 400 DEG C ~ 500 DEG C, and tank body is fixed body, and live axle is rotating equipment.Live axle is with the speed uniform rotation of 14 ~ 16 rad/min.
The present invention seals between the live axle and tank body of heating and stirring tank, flexible contact is passed through between the sealing surface of live axle and the interior surface of contact of graphite packing group, when the roughness that the outer surface of live axle causes due to processing is uneven, the sealing that the sealing surface of live axle and the interior surface of contact of graphite packing group also can be made to keep good contacts, and can also ensure the normal rotation of live axle.The axial circumference of described seal joint 1 has ladder circular hole, compression spring 7 is installed and is connected with the bolt hole of fixed body 6 by axially fastening bolt 8, carry out flexibility to fix, axially to graphite packing group 4 axial compression, make graphite packing group 4 and the sealing surface close contact of tank body, ensure axial static sealing; Awave spring pressuring plate 3 is locked by radial clamping bolt 2 by seal joint 1, make each trough corresponding with the center line of every root graphite packing, make the internal surface of graphite packing group 4 and the sealing surface close contact of heating and stirring tank, ensure that the flexible radial force to graphite packing group 4, enhance the effect of dynamic seal (packing).The radial force of described spring pressuring plate 3 is greater than the axial force of seal joint 1 pair of graphite packing group 4, ensure that radial dynamic seal (packing).
Embodiment 3(stresses the application in the aggregate drying cylinder equipment of the present invention in asphalt mixing system)
Reaction temperature in heating and stirring tank is 450 DEG C ~ 480 DEG C, and cylindrical shell is rotating equipment, and entrance barrel cover, the outlet barrel cover on cylindrical shell both sides are fixed body.Cylindrical shell is with the speed uniform rotation of 7 ~ 9rad/min.
The present invention to aggregate drying cylinder two ends and entrance barrel cover, export between barrel cover and seal, flexible contact is passed through between the sealing surface of cylindrical shell and the interior surface of contact of graphite packing group, when the roughness that the outer surface of cylindrical shell causes due to processing is uneven, the sealing that the sealing surface of cylindrical shell and the interior surface of contact of graphite packing group also can be made to keep good contacts, and can also ensure the normal rotation of cylindrical shell.The axial circumference of described seal joint 1 has ladder circular hole, compression spring 7 is installed and is connected with the bolt hole of fixed body 6 by axially fastening bolt 8, carry out flexibility to fix, by axially fastening bolt 8 pairs of graphite packing group 4 axial compression around annulus, make the entrance barrel cover on graphite packing group 4 and cylindrical shell both sides, export the sealing surface close contact of barrel cover, ensure axial static sealing; Awave spring pressuring plate 3 is locked by radial clamping bolt 2 by seal joint 1, make each trough corresponding with the center line of every root graphite packing, make the internal surface of graphite packing group 4 and the sealing surface close contact of aggregate drying cylinder, ensure that the flexible radial force to graphite packing group 4, enhance the effect of dynamic seal (packing).The radial force of described spring pressuring plate 3 is greater than the axial force of seal joint 1 pair of graphite packing group 4, ensure that radial dynamic seal (packing).
Above content is the further description done the present invention in conjunction with optimal technical scheme, can not assert that the concrete enforcement of invention is only limitted to these explanations.Concerning general technical staff of the technical field of the invention, under the prerequisite not departing from design of the present invention, simple deduction and replacement can also be made, all should be considered as protection scope of the present invention.
Claims (10)
1. multiple spot compresses a high temperature resistant dynamic seal apparatus, it is characterized in that: described multiple spot compresses high temperature resistant dynamic seal apparatus and comprises: seal joint (1), clamping bolt, spring pressuring plate (3), graphite packing group (4); The circumference of described seal joint (1) has axial step cylindrical hole, seal joint (1) is at axial compression graphite packing group (4), make the sealing surface close contact of graphite packing group (4) and fixed body (6), and carry out flexibility fix by axially fastening bolt (8) and compression spring (7) and fixed body (6), realize the flexible static sealing of axis; The even circumferential of described seal joint (1) offers radial bolts hole; Described spring pressuring plate (3) adopts wave structure, one end is fixed by the radial bolts hole of radial clamping bolt (2) with seal joint (1), the other end soars, and fixed by the flexible contact of trough and graphite packing group (4), described spring pressuring plate (3) presses graphite packing group (4) and carries out radial direction evenly compression to it, make internal surface and rotating equipment (5) the sealing surface close contact of graphite packing group (4), realize radial flexible dynamic seal (packing).
2. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: described graphite packing group (4) is made up of 2 ~ 4 graphite plate roots.
3. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the trough amplitude of described spring pressuring plate (3) increases gradually, and each trough is corresponding with the center line of every root graphite packing.
4. a kind of multiple spot according to claim 1 or 3 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the material of described spring pressuring plate (3) adopts 65Mn.
5. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: described radial clamping bolt (2) and axially fasten bolt (8) and all adopt hexagon socket head cap screw.
6. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the radial force of the spring pressuring plate (3) suffered by described graphite packing group (4) is greater than the axial force of seal joint (1) to graphite packing group (4).
7. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: around the annulus of described seal joint (1), radial direction offers bolt hole by 2 ° ~ 4 °, and the quantity of described bolt hole is compression and counts.
8. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the applicable working condition temperature range that described multiple spot compresses high temperature resistant dynamic seal apparatus is 300 DEG C ~ 500 DEG C, rotating equipment (5) is with the speed uniform rotation of 5 ~ 20 rad/min simultaneously.
9. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the annulus peripheral shaft of described seal joint (1) opens stepped cylindrical hole to by 10 ° ~ 15 °, and its angle is determined according to the load of seal joint (1).
10. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the structure in described stepped cylindrical hole is the cylindrical hole of two sections of different-diameters, the cylindrical hole that diameter is large is greater than the head diameter axially fastening bolt (8), and its length equals the height summation of nut and compression spring; The cylindrical hole that diameter is little is greater than the diameter of bolt shank, and its length is less than the length of bolt shank.
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| CN201410127156.6A CN103867724B (en) | 2014-04-01 | 2014-04-01 | A kind of multiple spot compresses high temperature resistant dynamic seal apparatus |
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| CN201410127156.6A CN103867724B (en) | 2014-04-01 | 2014-04-01 | A kind of multiple spot compresses high temperature resistant dynamic seal apparatus |
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| CN103867724A CN103867724A (en) | 2014-06-18 |
| CN103867724B true CN103867724B (en) | 2015-10-28 |
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| CN104154243B (en) * | 2014-06-19 | 2018-07-27 | 宁波天生密封件有限公司 | The encapsulating method and its compressible filler of compressible filler with density gradient |
| CN107740881A (en) * | 2017-11-15 | 2018-02-27 | 陈风琴 | A kind of valve with regulation leak-stopping function |
| CN108468809B (en) * | 2018-04-03 | 2020-04-21 | 农业部规划设计研究院 | Dynamic sealing mechanism and method for continuous pyrolysis of biomass |
| CN111074027B (en) * | 2020-01-22 | 2024-03-29 | 北京首钢国际工程技术有限公司 | Combined sealing device for water-cooling airtight box of blast furnace ironmaking distributor |
| CN111351346B (en) * | 2020-03-16 | 2021-11-19 | 江苏鹏飞集团股份有限公司 | Rotary kiln barrel water spraying cooling device |
| CN111457719B (en) * | 2020-03-17 | 2022-03-22 | 中信重工机械股份有限公司 | Pyrolysis rotary kiln sealing device that floats |
| CN114719624B (en) * | 2022-04-29 | 2023-02-03 | 二重（德阳）重型装备有限公司 | High-temperature rotor rotary sealing structure, mounting method and control method of compensation pressure |
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| JPS552848A (en) * | 1978-06-22 | 1980-01-10 | Arai Pump Mfg Co Ltd | Shaft sealing device |
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2014
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| US7021632B2 (en) * | 2004-03-04 | 2006-04-04 | Flowserve Management Company | Self-energized gasket and manufacturing method therefor |
| CN202691055U (en) * | 2012-06-14 | 2013-01-23 | 宁波伏尔肯机械密封件制造有限公司 | Silicon carbide mechanical seal device |
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Effective date of registration: 20200420 Address after: 116000 1st floor, no.13-5, Guanggu Road, Dalian Economic and Technological Development Zone, China (Liaoning) pilot Free Trade Zone, Dalian City, Liaoning Province Patentee after: DALIAN HUANZI TECHNOLOGY Co.,Ltd. Address before: Shahekou District of Dalian City, Liaoning province 116000 righteousness Street No. 8 Junan apartment Patentee before: DALIAN RONGDA RESOURCE CYCLIC UTILIZATION CONSULTING AND DESIGN Co.,Ltd. |