CN207562659U - A kind of rotary kiln is fed sealing device - Google Patents
A kind of rotary kiln is fed sealing device Download PDFInfo
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- CN207562659U CN207562659U CN201721494238.XU CN201721494238U CN207562659U CN 207562659 U CN207562659 U CN 207562659U CN 201721494238 U CN201721494238 U CN 201721494238U CN 207562659 U CN207562659 U CN 207562659U
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- rotary kiln
- conveying pipeline
- pipe
- rotation
- sealing device
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Abstract
The utility model provides a kind of rotary kiln feed sealing device, is made of positive seal pipe, rotation seal joint and conveying pipeline protection sleeve pipe；Rotation seal joint both ends are connected respectively with fixed conveying pipeline and rotation conveying pipeline, realize fluid materials from fixed conveying pipeline to the conveying of rotation conveying pipeline and sealing；Positive seal pipe is passed through circulating water cooling, is passed through compressed air to seal high-temperature kiln gas and completely cut off high temperature；Kiln inward turning transfers the protection sleeve pipe that expects pipe outer cover is equipped with lower part trepanning, prevents material from falling and rotation conveying pipeline is caused to damage.The structure design of the utility model is reasonable, efficiently solves the multi-sealed and protection problem in rotary kiln material conveying pipe connection procedure.
Description
Technical field
The utility model is related to rotary kiln denitration device fields, and sealing device is fed more particularly, to a kind of rotary kiln.
Background technology
Largely using various rotary kilns in industry, such as cement kiln, metallurgical calcination rotary kiln, rotation incinerating kiln, rotary drying
Kiln etc. is manufactured, and rotary kiln can generate the pollutant largely based on nitrogen oxides, to ring in process of manufacture
Bring serious pollution in border.To reduce environmental pollution amount, it is necessary to carry out the denitration of rotary kiln flue gas, current widest flue gas takes off
Nitre technology is selective catalytic reduction（SCR）Method and selective non-catalytic reduction method（SNCR）, SCR method denitration efficiencies are higher, but
It invests big, system complex, operating cost height, and SCR techniques there are certain requirements furnace flue gas composition, dust
Excessively high, particle is too big or is easily bonded to part containing some, all easily causes the catalyst blockage in SCR techniques, makes SCR system can not
Normal operation in flue gas containing alkali metal element when some element-specifics, also easily causes catalyst poisoning failure, therefore, SCR
Denitrating technique is in many instances using being restricted.
SNCR denitration technology investment is low, operating cost is few, simple system, applied widely, is the rotation being commonly used
Rotary kiln denitrating technique, but the denitration efficiency of SNCR denitration technique is relatively low, when SNCR is used to carry out denitration, needs to restore
Agent（Urea liquid or ammonium hydroxide etc.）Effectively be transported in rotary kiln and through jet atomization device spray into kiln with material mixing denitration,
Therefore, to solve the problems, such as how liquid conducting pipes seal when entering rotary kiln, and rotary kiln one end is combustion apparatus, no
Other pipelines can be accessed, the other end is to fix flue, material inlet and exhanst gas outlet of the floss hole for equipment, liquid conducting pipes
When being penetrated from flue and when being rotated with kiln, the sealing problem between the conveyance conduit for solving to rotate and fixed walling of flue is needed,
And anticollision and anti-wear problem of the conveyance conduit when passing through the material to fall area.
Utility model content
The technical problems to be solved in the utility model is：It overcomes the deficiencies of the prior art and provide a kind of with multi-sealed
Sealing device is fed with the rotary kiln of protecting effect.
Technical solution is used by the utility model solves its technical problem：
A kind of rotary kiln is fed sealing device, including rotation seal joint and positive seal pipe；Rotation seal joint uses
Double mechanical seal, the fixed conveying pipeline of one end connection, other end connection rotation conveying pipeline；Positive seal pipe to be jacket structured,
At the joint for extending to outside kiln end on fixed walling of flue positioned at rotary kiln axle center, front end is provided with close to rotary kiln, downside
Compressed air inlet pipe connects chuck inner tube；Sealing, the built-in packing envelope of sealing is arranged inside far from rotary kiln in rear end
Filler, filler outer end are sealed by sealing gland, and rotation conveying pipeline enters after passing through positive seal pipe in rotary kiln fixation flue.
Pipe flange is welded in positive seal pipe rear end, and sealing gland is bolted on flange；Rotation seal joint
Rear end then passes through screw thread（Or flange）It is connected with conveying pipeline fixed outside rotary kiln；Positive seal pipe rear end is protected by packing seal
Compressed air is demonstrate,proved not leak out from rear end.
Further, cooling water inlet pipe is provided on the downside of the positive seal pipe front end, rear upper side is provided with cooling water
Outlet, cooling water inlet pipe connect chuck outer tube with cooling water outlet pipe.Flue-gas temperature is higher in flue（900 DEG C or more）,
Cooling water constantly flows through positive seal pipe, can take away the amount of heat at positive seal pipe in flue, effectively reduce positive pressure
Temperature at seal pipe avoids conduction of the high temperature to rotation seal joint, it is ensured that sealing effect and service life.
Further, the positive seal pipe front end is sealed with circular steel plate, and central part is opened there are one round hole, rotates conveying
Pipe is across the round hole and forms a relatively narrow annulus, and the compressed air that compressed air inlet pipe provides passes through the annular
Gap enters in rotary kiln flue.Compressed air temperature is relatively low, and its pressure be more than flue in flue gas pressure, compressed air from
Positive seal pipe constantly enters in rotary kiln, can effectively avoid the high-temperature flue gas in rotary kiln and enters in positive seal pipe, effectively
Conduction of the high temperature to rotation seal joint in kiln is completely cut off.
Further, the sealing device further includes conveying pipeline protection sleeve pipe, positive seal pipe front end connection conveying protection of pipe
Casing, conveying pipeline protection sleeve pipe cross the fixation flue region of rotary kiln, and rotation conveying pipeline passes through curved after conveying pipeline protection sleeve pipe
It rolls over and is pierced by rotary kiln, the caliber of conveying pipeline protection sleeve pipe is identical with positive seal pipe caliber or slightly larger than positive seal pipe pipe
Diameter.
Further, the protection sleeve pipe uses heat-resisting material, and passes through heat-resisting steel bracket and be fixedly supported on fixed flue
On wall.Protection sleeve pipe lower part tube wall opens up the strip hole that width is more than 20mm in an axial direction, leaves width every 100mm and is more than
The tube wall of 20mm, to ensure casing strength.Protection sleeve pipe can both prevent solid material dropping shock rotation conveying pipeline from causing to rotate
Conveying pipeline deforms, and influences its coaxial rotating with rotary kiln, influences sealing effect afterwards；Meanwhile into the powder in protection sleeve pipe
Material is fallen by the strip hole below protection sleeve pipe, will not be deposited in protection sleeve pipe hardened.
Further, the rotation conveying pipeline is fixed on by the stent of high temperature resistant material on rotary kiln inner wall, and ensure to revolve
Expects pipe is transferred to overlap with rotary kiln center.
Further, the rotation conveying pipeline uses heat-proof corrosion resistant material.
Further, protection shell is arranged with outside the rotation seal joint, protection shell is fixed on positive densification by flange
The rear end of tube sealing.
The beneficial effects of the utility model：A kind of rotary kiln feed sealing device provided by the utility model, can be used for water
The flue gas denitrification system reducing agent conveying of the rotary kilns such as stall, calcination kiln, incinerating kiln, dry kiln is also used for setting to various rotations
Standby interior conveying fluid materials；Sealing device uses the compressed air positive seal pipe of special included water cooling, realizes high temperature in kiln
The sealing of flue gas, and effectively completely cut off the conduction of the rotation seal joint of high temperature rearwards in kiln, it is close to reduce rotation seal joint
Temperature at envelope, it is ensured that sealing effect and service life efficiently solve the multi-sealed and guarantor in conveyance conduit connection procedure
Shield problem.
Description of the drawings
Fig. 1-it is a kind of front view of the visualization mechanism of vehicle-mounted distribution box of the utility model；
Fig. 2-for the Section A-A schematic diagram in Fig. 1；
Fig. 3-for the section B-B schematic diagram in Fig. 1.
In figure：1-rotary kiln fix flue, 2-casing support, 3-sealing surface, 4-rotary kiln, 5-fixing bracket,
6-conveying pipeline protection sleeve pipe, 7-rotation conveying pipeline, 8-cooling water inlet pipe, 9-compressed air inlet pipe, 10-sealing are filled out
Material, 11-sealing gland, 12-protection shell, 13-rotation seal joint, 14-cooling water outlet pipe, 15-positive seal
Pipe, 16-fixation conveying pipeline, 17-sealing.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Embodiment
With reference to attached drawing, kiln body part include the horizontally disposed rotary kiln 4 rotated around direction shown in arrow and with rotary kiln 4 one
The vertical fixed flue 1 that end is tightly connected by sealing surface 3, fixed flue 1 is flue gas discharge opening and material inlet.
Rotary kiln feed sealing device includes rotation seal joint 13, positive seal pipe 15 and conveying pipeline protection sleeve pipe 6.Rotation
Turn seal nipple 13 using double mechanical seal, the fixed conveying pipeline 16 of one end connection, other end connection rotation conveying pipeline 7, rotation
Turn to be arranged with protection shell 12 outside seal nipple 13, protection shell 12 is fixed on the rear end of positive seal pipe 15 by flange.
Positive seal pipe 15 is jacket structured, and crossing on 1 wall of fixed flue outside kiln end is extended to positioned at 4 axle center of rotary kiln
At point, front end is provided with compressed air inlet pipe 9 close to rotary kiln 4, downside, connects chuck inner tube；Rear end is far from rotary kiln
4, sealing 17 is arranged inside, sealing 17 is built-in to fill out airtight and watertight padding 10, and filler outer end is sealed by sealing gland 11, sealing
11 flange of gland is bolted with 15 flange of positive seal pipe.
15 front end of positive seal pipe is provided with cooling water inlet pipe 8 close to rotary kiln 4, downside, and rear end is far from rotary kiln
4, upside is provided with cooling water outlet pipe 14, and cooling water inlet pipe 8 connects chuck outer tube with cooling water outlet pipe 14.
15 front end of positive seal pipe connects the conveying pipeline protection sleeve pipe 6 identical with its caliber, and conveying pipeline protection sleeve pipe 6 passes through
Heat-resisting sleeve stent 2 is fixedly supported on fixed walling of flue.
The rotation conveying pipeline 7 connected at rotation seal joint 13 sequentially passes through positive seal pipe 15 and conveying pipeline protection sleeve pipe
Rotary kiln 4 is pierced by after 6, rotation conveying pipeline 7 is fixed on by the fixing bracket 5 of high temperature resistant material on 4 inner wall of rotary kiln, and ensure
Rotation conveying pipeline 7 is overlapped with 4 center of rotary kiln.
The operation principle and using method of the utility model：
Rotation conveying pipeline 7 is designed for corrosion-and high-temp-resistant, and feed liquid is after fixed conveying pipeline 16 flows through rotation seal joint 13
Into rotation conveying pipeline 7, rotation conveying pipeline 7 is fixed on by fixing bracket 5 in rotary kiln 4, and pass through what is set on rotary kiln 4
Cavernous structure is pierced by rotary kiln 4, is rotated with 4 direction of rotation of rotary kiln, and 7 horizontal pipeline part of rotation conveying pipeline is located at rotary kiln 4
On center line.
15 rear end of positive seal pipe sets sealing 17, and filling airtight and watertight padding 10 in sealing 17 is sealed, and compression is empty
Gas is entered by compressed air inlet pipe 9 in positive seal pipe 15, cavernous structure and rotation by 15 front end of positive seal pipe
Gap between conveying pipeline 7 enters in fixed flue 1, and the pressure of compressed air is more than the pressure of flue gas in flue, can be effective
High-temperature flue gas in tissue flue is entered by gap in positive seal pipe 15, and passes through positive seal pipe 15 and rotation conveying pipeline
7 transfer heat to rotation seal joint 13.
Meanwhile cooling water constantly enters from the cooling water of positive seal pipe 15, and passes through cooling water outlet 14 and flow out, positive pressure
Seal pipe 15 is sleeve type structure, and cooling water surrounds entire 15 interior zone of positive seal pipe, can take away positive seal pipe 15
Neighbouring amount of heat, the heat reduced in flue are transferred to by the tube wall of positive seal pipe 15 inside positive seal pipe 15,
And pass through positive seal pipe 15 and be transferred at rotation seal joint 13.
15 front end of positive seal pipe is fixedly connected with conveying pipeline protection sleeve pipe 6, and conveying pipeline protection sleeve pipe 6 passes through casing support
2 are fixed in fixed flue 1, and conveying pipeline protection sleeve pipe 6 is the high temperature resistant material thickeied, and material is fallen to by fixed flue 1
It during rotary kiln 4, drops in conveying pipeline protection sleeve pipe 6, so as to prevent solid material dropping shock rotation conveying pipeline 7 from making
It is deformed into rotation conveying pipeline 7, influences its coaxial rotating with rotary kiln 4.Conveying pipeline protection sleeve pipe 6 is in the condition of proof strength
Under, its underpart tube wall opens up hole in an axial direction, is fallen into the powder in protection sleeve pipe by the strip hole below protection sleeve pipe
Under, it prevents from depositing in the materials such as dust sleeve pipe in kiln hardened.
Claims (8)
1. a kind of rotary kiln is fed sealing device, it is characterised in that：Including rotation seal joint and positive seal pipe；Rotatory sealing
Connector uses double mechanical seal, the fixed conveying pipeline of one end connection, other end connection rotation conveying pipeline；Positive seal pipe is folder
Nested structure is extended to outside kiln end positioned at rotary kiln axle center and is fixed at the joint on walling of flue, and front end is close to rotary kiln, downside
Compressed air inlet pipe is provided with, connects chuck inner tube；Far from rotary kiln sealing is arranged inside, sealing is built-in in rear end
Airtight and watertight padding is filled out, filler outer end is sealed by sealing gland, and rotation conveying pipeline is fixed after passing through positive seal pipe into rotary kiln
In flue.
2. a kind of rotary kiln feed sealing device as described in claim 1, it is characterised in that：Under the positive seal pipe front end
Side is provided with cooling water inlet pipe, and rear upper side is provided with cooling water outlet pipe, and cooling water inlet pipe and cooling water outlet pipe connect
Logical chuck outer tube.
3. a kind of rotary kiln feed sealing device as described in claim 1, it is characterised in that：It uses the positive seal pipe front end
Circular steel plate seals, and central part is opened there are one round hole, and rotation conveying pipeline passes through the round hole and forms an annulus, pressure
The compressed air that contracting air intlet pipe provides is entered by the annulus in rotary kiln flue.
4. a kind of rotary kiln feed sealing device as described in claim 1, it is characterised in that：The sealing device further includes defeated
Expects pipe protection sleeve pipe, positive seal pipe front end connection conveying pipeline protection sleeve pipe, conveying pipeline protection sleeve pipe cross the fixation of rotary kiln
Flue region, rotation conveying pipeline bend after passing through conveying pipeline protection sleeve pipe and are pierced by rotary kiln.
5. a kind of rotary kiln feed sealing device as claimed in claim 4, it is characterised in that：The protection sleeve pipe is using heat-resisting
Material, and pass through heat-resisting steel bracket and be fixedly supported on fixed walling of flue, protection sleeve pipe lower part tube wall is provided in the axial direction with length
Strip hole.
6. a kind of rotary kiln feed sealing device as described in claim 1, it is characterised in that：The rotation conveying pipeline passes through resistance to
The stent of high temperature material is fixed on rotary kiln inner wall, and ensures that rotate conveying pipeline overlaps with rotary kiln center.
7. a kind of rotary kiln feed sealing device as described in claim 1 or 6, it is characterised in that：The rotation conveying pipeline is adopted
With heat-proof corrosion resistant material.
8. a kind of rotary kiln feed sealing device as described in claim 1, it is characterised in that：The rotation seal joint housing
Equipped with protection shell, protection shell is fixed on the rear end of positive seal pipe by flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494238.XU CN207562659U (en) | 2017-11-10 | 2017-11-10 | A kind of rotary kiln is fed sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494238.XU CN207562659U (en) | 2017-11-10 | 2017-11-10 | A kind of rotary kiln is fed sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207562659U true CN207562659U (en) | 2018-07-03 |
Family
ID=62694104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721494238.XU Active CN207562659U (en) | 2017-11-10 | 2017-11-10 | A kind of rotary kiln is fed sealing device |
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| CN (1) | CN207562659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109775959A (en) * | 2019-02-18 | 2019-05-21 | 姚树飞 | A kind of dedicated charging system of basalt fibre production |
-
2017
- 2017-11-10 CN CN201721494238.XU patent/CN207562659U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109775959A (en) * | 2019-02-18 | 2019-05-21 | 姚树飞 | A kind of dedicated charging system of basalt fibre production |
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