CN206291735U - Rotary kiln shaft preheater - Google Patents
Rotary kiln shaft preheater Download PDFInfo
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- CN206291735U CN206291735U CN201621334323.5U CN201621334323U CN206291735U CN 206291735 U CN206291735 U CN 206291735U CN 201621334323 U CN201621334323 U CN 201621334323U CN 206291735 U CN206291735 U CN 206291735U
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- rotary kiln
- preheater
- preheating
- preheating zone
- feed bin
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Abstract
The utility model belongs to rotary kiln technical field, specifically a kind of rotary kiln shaft preheater.Including preheating chamber, material-pulling device, preheating zone, tremie pipe, feed bin and blanking funnel, the upper and lower end of wherein preheating chamber is respectively equipped with feed bin and blanking funnel, the bottom of the feed bin is provided with multiple feed openings, circumferentially arranged with multiple preheating zones in the preheating chamber, each preheating zone is connected by a tremie pipe with a feed opening of feed bin, the bottom of each preheating zone is provided with a material-pulling device being arranged on preheater shell, for material to be pushed in blanking funnel.The utility model reduction preheater pressure drag, and then the motor actual power of tail exhaust blower is reduced, energy-saving effect is notable.
Description
Technical field
The utility model belongs to rotary kiln technical field, specifically a kind of rotary kiln shaft preheater.
Background technology
Calcining metallurgy lime is in theory to live through four technical equipment epoch；Traditional earth kiln, half are experienced successively certainly
Dynamicization shaft furnace, full-automatic (PLC controls) change shaft furnace and full-automatic (DCS controls) rotary kiln.
Analyzed from product quality, rotary kiln production technology is that metallurgy lime industry technique is at first in current world wide
Enter, the production technology that quality is most stable, quality index is best.In spite of dressing for absolute predominance rotary kiln production technology,
Many irrational places are still there is in actual production.At present, for shaft preheater, due to the preheating zone in preheating chamber
Height it is (design bed depth be H1=3250mm) higher, the materialbeds comminution of formation is 4000Pa, to 900KW in operation below
The tail exhaust blower of (10kv) brings larger power consumption, simultaneously because pressure drag is big, causes certain to ventilation in rotary kiln
Influence, the negative pressure of kiln tail feed compartment is not enough, forms calcining heat in kiln and has an impact；Fuel combustion state and fuel profit are influenceed simultaneously
With rate, it is impossible to which clean-burning coal dust has been further exacerbated by the formation of " kiln circle ", the drawbacks of bring many to production.
Utility model content
Regarding to the issue above, the purpose of this utility model is to provide a kind of rotary kiln shaft preheater, existing to solve
The relatively high power consumption and the negative pressure of kiln tail feed compartment that preheater brings to the tail exhaust blower in operation below are not enough, are formed in kiln
The influential problem of calcining heat.
To achieve these goals, the utility model uses following technical scheme：
A kind of rotary kiln shaft preheater, including preheating chamber, material-pulling device, preheating zone, tremie pipe, feed bin and blanking leakage
Bucket, the upper and lower end of wherein preheating chamber is respectively equipped with feed bin and blanking funnel, and the bottom of the feed bin is provided with multiple feed openings, institute
State in preheating chamber circumferentially arranged with multiple preheating zones, each preheating zone is connected by a tremie pipe with a feed opening of feed bin,
The bottom of each preheating zone is provided with a material-pulling device being arranged on preheater shell, for material to be pushed into blanking funnel
It is interior.
The upper end of the preheating zone is provided with neck, and the upper end of the neck is provided with feed opening and exhaust outlet, the tremie pipe
The neck of the preheating zone is inserted, exhaust space is left between the outer wall of the tremie pipe and the inwall of the neck, it is described pre-
The exhaust outlet in the torrid zone is connected with exhaust piping.
The lower port of the tremie pipe is horn-like.
The part that the tremie pipe is located on the outside of preheating zone is outward-dipping.
The material-pulling device includes push rod, cuts somebody's hair and drive device, wherein cut somebody's hair that the bottom of the preheating zone is arranged at, institute
State that push rod is inserted in the pilot hole that the preheater shell is provided with and medial extremity be connected with cutting somebody's hair, the drive device is pacified
It is connected with the outboard end of push rod mounted in the outside of the preheater shell and output end, the drive device is driven by push rod
Cut somebody's hair and do reciprocating linear motion, so as to realize the push of material.
The drive device includes swing arm and hydraulic cylinder, and wherein swing arm and hydraulic cylinder is arranged on the outside of preheater shell,
The upper end of the swing arm is hinged with preheater shell, and lower end is hinged with the output shaft of hydraulic cylinder, outboard end and the pendulum of the push rod
Arm is hinged, and the Driven by Hydraulic Cylinder swing arm swings, and the swing arm promotes push rod for linear motion.
Flue-dust retainer is provided with below pilot hole on the preheater shell.
Charge door is provided with above the feed bin.
The outside of the preheating chamber is corresponding with each preheating zone on the preheater shell circumferentially arranged with observation platform
Position is respectively equipped with an observation window.
AD is provided with the top of the preheating chamber and rain is taken.
Advantage of the present utility model and beneficial effect are：
1. the utility model to reduce preheater pressure drag, and then reduces tail by reducing preheater inside thickness of feed layer
The motor actual power of exhaust blower, energy-saving effect is notable.
2. the utility model improves revolution kiln ventilation, improves the efficiency of combustion of fuel, has saved the energy, while carrying
Preheating temperature in preheater high, material resolution ratio, to 32%, improves product quality and yield by 20% lifting.Improve fuel
After utilization rate, kiln flame is easily formed flame long, and so the high-temperature region in kiln is changed into not by the past concentration that compares
Concentrate very much, reduce thermal-flame to the thermal shock of resistance to material and thermic load in kiln, improve the service life of resistance to material, reduce and set
Standby maintenance cost；
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is enlarged drawing at Y in Fig. 1；
Fig. 3 is the structural representation of preheating chamber in the utility model；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the structural representation of push rod device in the utility model.
Wherein：1 is rotary kiln, and 2 is observation platform, and 3 is preheating chamber, and 4 is material-pulling device, and 41 is swing arm, and 42 is push rod, and 43 are
Hydraulic cylinder, 44 to cut somebody's hair, and 5 is preheating zone, and 6 is tremie pipe, and 7 is exhaust piping, and 8 is feed bin, and 9 is charge door, and 10 leak for blanking
Bucket, 11 is preheater shell, and 12 is AD, and 13 is air adjustment mouthful, and 14 is platform, and 15 is flue-dust retainer, and 16 is heat proof material,
M is rotary kiln hot blast, and H is the height of preheating zone.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and specific implementation
Example is described in detail to the utility model.
As Figure 1-4, a kind of rotary kiln shaft preheater that the utility model is provided, including preheating chamber 3, material-pulling device
4th, preheating zone 5, tremie pipe 6, feed bin 8 and blanking funnel 10, the upper and lower end of wherein preheating chamber 3 are respectively equipped with feed bin 8 and blanking leakage
Bucket 10, the bottom of the feed bin 8 is provided with multiple feed openings, the preheating chamber 3 circumferentially arranged with multiple preheating zones 5, and each is pre-
The torrid zone 5 connect by a tremie pipe 6 with a feed opening of feed bin 8, and the bottom of each preheating zone 5 is provided with one installed in preheating
Material-pulling device 4 on device housing 11, for material to be pushed in blanking funnel 10.
The top of the feed bin 8 is provided with charge door 9, and the blanking funnel 10 is connected with the charging aperture of rotary kiln 1.
As shown in Fig. 2 the upper end of the preheating zone 5 is provided with neck, to reduce preheater inside thickness of feed layer.The neck
Upper end be provided with feed opening and exhaust outlet, the tremie pipe 6 inserts the neck of the preheating zone 5, the outer wall of the tremie pipe 6 with
Exhaust space is left between the inwall of the neck, the exhaust outlet of the preheating zone 5 is connected with exhaust piping 7.Reduce preheater
Internal thickness of feed layer
The lower port of the tremie pipe 6 is horn-like, so that blanking is unimpeded.The tremie pipe 6 is located at the outside of preheating zone 5
Part is outward-dipping.
As shown in figure 5, the material-pulling device 4 includes push rod 42, cut somebody's hair 44 and drive device, wherein cutting somebody's hair 44 is arranged at institute
State the bottom of preheating zone 5, the push rod 42 be inserted in the pilot hole that the preheater shell 11 is provided with and medial extremity with push away
First 44 connection, the drive device is arranged on the outside of the preheater shell 11 and output end connects with the outboard end of push rod 42
Connect, the drive device drives to cut somebody's hair and 44 does reciprocating linear motion by push rod 42, so as to realize the push of material.
The drive device includes swing arm 41 and hydraulic cylinder 43, and wherein swing arm 41 and hydraulic cylinder 43 is arranged on preheater shell
11 outside, upper end and the preheater shell 11 of the swing arm 41 are hinged, and lower end is hinged with the output shaft of hydraulic cylinder 43, described to push away
The outboard end of bar 42 is hinged with swing arm 41, and the hydraulic cylinder 43 drives swing arm 41 to swing, and the swing arm 41 promotes push rod 42 to make directly
Line is moved.
Flue-dust retainer 15 is provided with below pilot hole on the preheater shell 11.
The outside of the preheating chamber 3 circumferentially arranged with observation platform 2, with each phase of preheating zone 5 on the preheater shell 11
Corresponding position is respectively equipped with an observation window.The top of the preheating chamber 3 is provided with AD 12 and rain is taken.
In an embodiment of the present utility model, the height H=2750mm of preheating zone 9.
The top of the preheating zone 9 is provided with neck, so that the height of preheating zone 9 is increased less than the height of preheating chamber 3
The upper gas space volume of material, serves certain gravity depositing dust effect, and the dedusting for alleviating follow-up sack cleaner is born
Lotus, reduces the abrasion of cloth bag, extends the cloth bag replacement cycle of sack cleaner, saves maintenance cost.Improve preheater
Outlet temperature increase heat content, the exhaust gas utilization for next step improves temperature.
Due to the change of the height of the bed of material in preheating zone 9, also increased therewith by the flow velocity of the hot-air flow of the bed of material.Raw material
In some tiny dust granules be not brought into the feed in the rotary kiln of next operation mixing as before,
In 1250 DEG C of high-temperature calcination environment, become to melt liquid phase substance, and the resistance to material of rotary kiln carries out a series of chemical reaction, is formed(calcium silicates series),(calcium aluminate series) secondary reactant, exacerbates " dross " phenomenon, to producing
What quality and technique productions were all brought has a strong impact on.The utility model solves above mentioned problem.
After the thickness of feed layer of the utility model reduction preheater inside, preheater pressure drag is reduced, and then reduce tail row
The motor actual power of blower fan, energy-saving effect is notable.
Following table is the Data Comparison table of existing preheating in rotary kiln device and various functions of the present utility model：
As can be seen from the above table, the utility model improves revolution kiln ventilation, improves the efficiency of combustion of fuel, saves
The energy, while improve preheating temperature in preheater, material resolution ratio by 20% lifting to 32%, improve product quality and
Yield.Improve after fuel availability, kiln flame is easily formed flame long, so to the high-temperature region in kiln by past comparing
Concentration is changed into less to be concentrated, and reduces thermal-flame to the thermal shock of resistance to material and thermic load in kiln, improves the use of resistance to material
In the life-span, reduce maintenance of equipment expense；
The utility model improves the cleaning gas degree in kiln, reduces turbidity in kiln, accelerates the burning speed of flame
Degree, improves the ignition temperature of flame；Due to exacerbating the combustion process of Pulverized Coal, pulverized coal particle is set to fall in the resistance to material of rotary kiln
Completely burnt out when upper, and reduced in rotary kiln the probability of happening of " dross " failure.
During with " scaffold " technology trouble of pre-treatment preheating zone, because bed depth is big, angle also bad grasp, in treatment
Difficulty is very big during failure " scaffold ", the powerful negative pressure brought because the bed of material is high in addition, is also brought very to personnel's physical safety
Big potential safety hazard；
Now due to bed depth is reduced, negative pressure is reduced, and difficulty is also reduced much during treatment " scaffold " failure.
Implementation method of the present utility model is the foregoing is only, protection domain of the present utility model is not intended to limit.It is all
Any modification, equivalent substitution and improvements, extension made within spirit of the present utility model and principle etc., is all contained in this reality
With in new protection domain.
Claims (10)
1. a kind of rotary kiln shaft preheater, it is characterised in that including preheating chamber (3), material-pulling device (4), preheating zone (5), under
Expects pipe (6), feed bin (8) and blanking funnel (10), the upper and lower end of wherein preheating chamber (3) are respectively equipped with feed bin (8) and blanking funnel
(10), the bottom of the feed bin (8) is provided with multiple feed openings, the preheating chamber (3) circumferentially arranged with multiple preheating zones (5),
Each preheating zone (5) is connected by a tremie pipe (6) with a feed opening of feed bin (8), and the bottom of each preheating zone (5) is provided with
One material-pulling device (4) being arranged on preheater shell (11), for material to be pushed in blanking funnel (10).
2. rotary kiln shaft preheater according to claim 1, it is characterised in that the upper end of the preheating zone (5) is provided with
Neck, the upper end of the neck is provided with feed opening and exhaust outlet, and the tremie pipe (6) inserts the neck of the preheating zone (5), institute
State and exhaust space is left between the outer wall of tremie pipe (6) and the inwall of the neck, the exhaust outlet and waste gas of the preheating zone (5)
Pipeline (7) is connected.
3. rotary kiln shaft preheater according to claim 2, it is characterised in that the lower port of the tremie pipe (6) is
It is horn-like.
4. rotary kiln shaft preheater according to claim 3, it is characterised in that the tremie pipe (6) is positioned at preheating zone
(5) part on the outside of is outward-dipping.
5. rotary kiln shaft preheater according to claim 1, it is characterised in that the material-pulling device (4) is including push rod
(42), cut somebody's hair (44) and drive device, wherein cut somebody's hair (44) be arranged at the bottom of the preheating zone (5), the push rod (42) is inserted
In the pilot hole being provided with located at the preheater shell (11) and medial extremity with cut somebody's hair (44) be connected, the drive device is pacified
It is connected with the outboard end of push rod (42) mounted in the outside of the preheater shell (11) and output end, the drive device passes through
Push rod (42) drive cut somebody's hair (44) do reciprocating linear motion, so as to realize the push of material.
6. rotary kiln shaft preheater according to claim 5, it is characterised in that the drive device includes swing arm (41)
With hydraulic cylinder (43), wherein swing arm (41) and hydraulic cylinder (43) are installed in the outside of preheater shell (11), the swing arm (41)
Upper end be hinged with preheater shell (11), lower end is hinged with the output shaft of hydraulic cylinder (43), the outboard end of the push rod (42)
It is hinged with swing arm (41), the hydraulic cylinder (43) drives swing arm (41) to swing, the swing arm (41) promotes push rod (42) to make straight line
Motion.
7. rotary kiln shaft preheater according to claim 5, it is characterised in that leading on the preheater shell (11)
To being provided with flue-dust retainer (15) below hole.
8. rotary kiln shaft preheater according to claim 1, it is characterised in that be provided with above the feed bin (8) plus
Material mouth (9).
9. rotary kiln shaft preheater according to claim 1, it is characterised in that the outside of the preheating chamber (3) is along week
To observation platform (2) is provided with, the position corresponding with each preheating zone (5) is respectively equipped with a sight on the preheater shell (11)
Examine window.
10. rotary kiln shaft preheater according to claim 1, it is characterised in that be provided with the top of the preheating chamber (3)
AD (12) and rain are taken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334323.5U CN206291735U (en) | 2016-12-07 | 2016-12-07 | Rotary kiln shaft preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334323.5U CN206291735U (en) | 2016-12-07 | 2016-12-07 | Rotary kiln shaft preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206291735U true CN206291735U (en) | 2017-06-30 |
Family
ID=59096442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621334323.5U Active CN206291735U (en) | 2016-12-07 | 2016-12-07 | Rotary kiln shaft preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206291735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610229A (en) * | 2016-12-07 | 2017-05-03 | 丹东同合高新科技有限公司 | Rotary kiln vertical preheater |
-
2016
- 2016-12-07 CN CN201621334323.5U patent/CN206291735U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610229A (en) * | 2016-12-07 | 2017-05-03 | 丹东同合高新科技有限公司 | Rotary kiln vertical preheater |
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