CN105170257A - Coal slime drying and screening crushing device utilizing smoke waste heat of power station boiler - Google Patents
Coal slime drying and screening crushing device utilizing smoke waste heat of power station boiler Download PDFInfo
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- CN105170257A CN105170257A CN201510497779.7A CN201510497779A CN105170257A CN 105170257 A CN105170257 A CN 105170257A CN 201510497779 A CN201510497779 A CN 201510497779A CN 105170257 A CN105170257 A CN 105170257A
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- screen cloth
- coal slime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to a coal slime drying and screening crushing device utilizing smoke waste heat of a power station boiler. Compared with the prior art, the defect of vacancy of a coal slime drying and screening crushing device is overcome. According to the device, a bevel gear A is installed on an output shaft of a motor A through a coupling A. The bevel gear A is engaged with a bevel gear B. A screen linkage rod is installed on the bevel gear B. The screen linkage rod penetrates through the central point of the top of a screening crushing box body, a first-stage cutting blade and a second -stage cutting blade. A first-stage screen and a second-stage screen are installed on the screen linkage rod in sequence from top to bottom. The first-stage screen is located below the first-stage cutting blade. The second-stage screen is located below the second-stage cutting blade. According to the device, coal slime drying treatment is conducted by sufficiently utilizing the smoke waste heat.
Description
Technical field
The present invention relates to power plant's coal slime treatment facility technical field, specifically a kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat.
Background technology
In the design and running of boiler, exhaust gas temperature is one of key factor affecting boiler efficiency and safe operation, exhaust gas temperature often raises 15 ~ 20 °, the thermal efficiency of boiler about reduces by 1%, and the flue gas in most of power plant after deduster is being cooled in the process of room temperature from about 90 °, energy be not used effectively.Power plant's coal slime refer to water content about 25% ~ 30% low calorie fuels, coal slime can improve the combustion heat value of coal slime after drying kinetics process, actively seeks the method for coal slime drying in recent years in industry.How this being combined with Gas phase Smoke, while saving energy consumption, also can carry out drying process to coal slime, it has become the technical problem being badly in need of solving.
Summary of the invention
The object of the invention is to solve in prior art the defect that there is no coal slime drying process device, providing a kind of coal slime dry sieve crushing device of boiler of power plant fume afterheat that utilizes to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat, comprise boiler tail flue gas air supply duct and coal slime input channel, also comprise the broken casing of sieve, the inwall sieving broken casing is horizontally installed with first order cut-off blade and second level cut-off blade from top to bottom successively, the outlet of boiler tail flue gas air supply duct and coal slime input channel is all positioned at the broken casing of sieve and is positioned at the top of first order cut-off blade, the entrance of coal slime dry powder negative pressure transportation pipeline is positioned at the bottom of sieving broken casing, and coal slime dry powder negative pressure transportation pipeline is provided with centrifugal blower;
The output shaft of motor A is provided with helical gear A by shaft coupling A, helical gear A is meshed with helical gear B, helical gear B is provided with screen cloth gangbar, screen cloth gangbar is passed the top center point of the broken casing of sieve and is run through first order cut-off blade and second level cut-off blade, screen cloth gangbar is provided with first order screen cloth and second level screen cloth from top to bottom successively, first order screen cloth is positioned at the below of first order cut-off blade, and second level screen cloth is positioned at the below of second level cut-off blade.
The broken bottom half of described sieve is by spring fitting on platform, and the quantity of spring is several; Also comprise motor B, the output shaft of motor B is provided with helical gear C by shaft coupling B, helical gear C is meshed with helical gear D, one end of drive link is arranged on helical gear D, the other end of drive link is arranged on hydraulic pump, hydraulic pump is provided with hydraulic cylinder, and the piston rod of hydraulic cylinder is fixedly mounted on the broken casing of sieve.
The broken casing of described sieve is cylinder, and first order screen cloth and second level screen cloth are circle, and the diameter of first order screen cloth, the diameter of second level screen cloth are all less than the diameter sieving broken casing.
Described piston rod is arranged on the broken casing of sieve by screw.
The mesh diameter of described first order screen cloth is greater than the mesh diameter of second level screen cloth.
Described first order screen cloth and the material of second level screen cloth are elastic caoutchouc.
beneficial effect
A kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat of the present invention, compared with prior art takes full advantage of fume afterheat and carries out coal slime drying process.By utilizing boiler tail flue gas waste heat to carry out drying process to the coal slime that water content is about 25% ~ 30%, coal slime dry powder (water content is about 12% ~ 14%) is exported by negative-pressure pipeline.Coal slime forms motion, the vibration of circumferencial direction and vertical direction both direction in the broken casing of sieve, add and utilize the fully dry coal slime powder lower for water content of the flue gas in casing, under suction function, pump out casing, achieve the function utilizing the dry coal slime of residual heat from boiler fume.Have the advantages that structure is simple, practical.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein, 1-coal slime input channel, 2-boiler tail flue gas air supply duct, 3-coal slime dry powder negative pressure transportation pipeline, 4-centrifugal blower, 5-motor A, 6-shaft coupling A, 7-helical gear A, 8-screen cloth gangbar, 9-helical gear B, 10-first order screen cloth, 11-second level screen cloth, 12-motor B, 13-shaft coupling B, 14-helical gear C, 15-helical gear D, 16-connecting rod, 17-helical gear E, 18-helical gear F, 19-hydraulic pump, 20-hydraulic cylinder, 21-piston rod, 22-sieves broken casing, 23-first order cut-off blade, 24-second level cut-off blade, 25-screw, 26-spring, 27-platform, 28-drive link.
Detailed description of the invention
For making to have a better understanding and awareness architectural feature of the present invention and effect of reaching, coordinating detailed description in order to preferred embodiment and accompanying drawing, being described as follows:
As shown in Figure 1, a kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat of the present invention, comprise boiler tail flue gas air supply duct 2 and coal slime input channel 1, coal slime input channel 1 sends the coal slime that water content is about 25% ~ 30%, boiler tail flue gas air supply duct 2 send temperature about 120 ° containing heat smoke.Sieve broken casing 22 for sieving broken coal mud, the inwall sieving broken casing 22 is horizontally installed with first order cut-off blade 23 and second level cut-off blade 24 from top to bottom successively, and first order cut-off blade 23 is positioned at the top of second level cut-off blade 24.First order cut-off blade 23 and second level cut-off blade 24 be band cutting pawl pole, use for scraping coal slime, its be positioned at sieve broken casing 22 transverse cuts face on, can be designed as and sieve broken casing 22 same size or smaller.
The outlet of boiler tail flue gas air supply duct 2 and coal slime input channel 1 is all positioned at the broken casing 22 of sieve and is positioned at the top of first order cut-off blade 23, boiler tail flue gas air supply duct 2 contains heat smoke toward delivery temperature about 120 ° in the broken casing 22 of sieve, coal slime input channel 1 is about the coal slime of 25% ~ 30% toward conveying water content in the broken casing 22 of sieve, and coal slime drops on first order screen cloth 10 through first order cut-off blade 23.The entrance of coal slime dry powder negative pressure transportation pipeline 3 is positioned at the bottom of sieving broken casing 22, coal slime dry powder negative pressure transportation pipeline 3 is provided with centrifugal blower 4, in the coal slime after super-dry process, its water content reduces to 12% ~ 14%, become coal slime dry powder, under the effect of centrifugal blower 4, sent by coal slime dry powder negative pressure transportation pipeline 3.
In order to make the vibration (motion) in coal slime circumferentially direction, can also in a stationary support mounted motor A5.The output shaft of motor A5 is provided with helical gear A7 by shaft coupling A6, and helical gear A7 is meshed with helical gear B9, and helical gear A7 and helical gear B9 carries out support by the mode of prior art by gear installation base (installing rack) to be fixed.Helical gear B9 is provided with screen cloth gangbar 8, the rotation of helical gear B9 can be driven by the work of motor A5, thus drive the rotation of screen cloth gangbar 8.Screen cloth gangbar 8 is through the top center point of the broken casing 22 of sieve, and run through first order cut-off blade 23 and second level cut-off blade 24, screen cloth gangbar 8 be positioned at sieve broken casing 22 central point Y-axis center line on, screen cloth gangbar 8 all can be rotated on the sieve top of broken casing 22, first order cut-off blade 23 and second level cut-off blade 24.During practical application, in order to ensure the rotational stability of screen cloth gangbar 8, screen cloth gangbar 8 and broken casing 22 upper design one of sieve can be rotatably assorted, make screen cloth gangbar 8 form at helical gear B9 and broken casing 22 top of sieve at 2 and fix, rotational stability is better.Screen cloth gangbar 8 is provided with first order screen cloth 10 and second level screen cloth 11 from top to bottom successively, and the middle part of first order screen cloth 10 and second level screen cloth 11 is arranged in screen cloth gangbar 8.
Wherein, the mesh diameter of first order screen cloth 10 can be greater than the mesh diameter of second level screen cloth 11, coal slime through first order cut-off blade 23 cutting for the first time forms preliminary working, and the second level screen cloth 11 falling into little mesh from the first order screen cloth 10 of large mesh is reprocessed.The material of first order screen cloth 10 and second level screen cloth 11 can also be elastic caoutchouc, and such coal slime can form the bouncing vibration of different amplitude on first order screen cloth 10 and second level screen cloth 11, is more conducive to flue gas drying process.Sieve broken casing 22 and can be designed as cylinder, first order screen cloth 10 and second level screen cloth 11 are circle, and the diameter of first order screen cloth 10, the diameter of second level screen cloth 11 are all less than the diameter sieving broken casing 22.Broken for sieve casing 22, first order screen cloth 10 and second level screen cloth 11 are all designed to circle, are convenient to the rotary motion of first order screen cloth 10 and second level screen cloth 11.First order screen cloth 10 is positioned at the below of first order cut-off blade 23, second level screen cloth 11 is positioned at the below of second level cut-off blade 24, coal slime drops on first order screen cloth 10 or second level screen cloth 11, carries out the broken process of transverse direction sieve by first order cut-off blade 23 or second level cut-off blade 24.The position of first order cut-off blade 23 above first order screen cloth 10 can be designed according to the coal breakage amount of coal slime, and the cleft hand of first order cut-off blade 23 is positioned at 20 cm above first order screen cloth 10 basically.
In order to make coal slime be the vibration (motion) of vertical direction, the broken process of sieve simultaneously especially in order to make first order cut-off blade 23 and second level cut-off blade 24 can carry out longitudinal direction (above-below direction) for coal slime.Can also will be arranged on platform 27 by spring 26 bottom the broken casing 22 of sieve, platform 27 can be ground, brace table etc., and according to the performance of spring 26, the quantity of spring 26 can be multiple.Motor B12 is identical with motor A5, can be arranged in a stationary support.The output shaft of motor B12 is provided with helical gear C14 by shaft coupling B13, and helical gear C14 is meshed with helical gear D15, in like manner, helical gear D15 can be driven to rotate by motor B12.One end of drive link 28 is arranged on helical gear D15, and the other end of drive link 28 is arranged on hydraulic pump 19, by the work of the rotating band hydrodynamic press pump 19 of drive link 28.Hydraulic pump 19 is provided with hydraulic cylinder 20, hydraulic pump 19 drives hydraulic cylinder 20 to work, and the piston rod 21 of hydraulic cylinder 20 is fixedly mounted on the broken casing 22 of sieve by screw 25.Moved up and down by the piston rod 21 of hydraulic cylinder 20, thus drive the broken casing 22 of sieve to carry out up-down vibration under the support of spring 26, namely drive first order cut-off blade 23 and second level cut-off blade 24 for the coal slime on first order screen cloth 10 and second level screen cloth 11 carry out above-below direction cutting, sieve broken.In like manner, can also on helical gear C14 installing connecting rods 16, connecting rod 16 is installed the engaging structure of helical gear E17 and helical gear F18, helical gear F18 installs a set of hydraulic pressure cylinder assembly again additional, carry out up-down vibration to the broken casing 22 of sieve in the two directions, stability is better simultaneously.
When practical application, in the broken casing 22 of sieve, coal slime input channel 1 sends into the coal slime that water content is about 25% ~ 30%, boiler tail flue gas air supply duct 2 send into temperature about 120 ° containing heat smoke, coal slime falls on first order screen cloth 10.Motor A5 works, screen cloth gangbar 8 is driven to rotate, screen cloth gangbar 8 drives first order screen cloth 10 and second level screen cloth 11 to rotate, fixed owing to sieving broken casing 22, first order screen cloth 10 rotates, and realizes the transverse cuts of first order cut-off blade 23 pairs of coal slimes, the flue gas simultaneously coordinating boiler tail flue gas air supply duct 2 to send into carries out drying process to coal slime, motor B12 work simultaneously, drive link 28 is driven to rotate, drive link 28 rotates and hydraulic pump 19 is worked, thus drive hydraulic cylinder 20 to work, the piston rod 21 of hydraulic cylinder 20 moves up and down and drives the broken casing 22 of sieve to carry out up-down vibration under the support of spring 26.Because first order screen cloth 10 and second level screen cloth 11 are fixed in screen cloth gangbar 8, first order screen cloth 10 and second level screen cloth 11 with the broken casing 22 of sieve without fixed installation, first order cut-off blade 23 and second level cut-off blade 24 are then fixed on the broken casing 22 of sieve, therefore when sieving broken casing 22 and moving up and down, namely be that first order cut-off blade 23 or second level cut-off blade 24 move up and down on first order screen cloth 10 or second level screen cloth 11, thus realize cutting the longitudinal direction of coal slime.
Second level screen cloth 11 is fallen into through first order screen cloth 10 coal slime of sieving after broken process, in like manner, second level cut-off blade 24 carries out secondary cut on second level screen cloth 11, be furnished with flue gas dehumidifying and up-down vibration equally, coal slime after processing through second level screen cloth 11, forms the coal slime powder that particle is less, water content is lower, under the suction function of centrifugal blower 4, send the broken casing 22 of sieve by coal slime dry powder negative pressure transportation pipeline 3, achieve the function utilizing the dry coal slime of residual heat from boiler fume.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and description; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (6)
1. one kind utilizes the coal slime dry sieve crushing device of boiler of power plant fume afterheat, comprise boiler tail flue gas air supply duct (2) and coal slime input channel (1), it is characterized in that: also comprise the broken casing of sieve (22), the inwall sieving broken casing (22) is horizontally installed with first order cut-off blade (23) and second level cut-off blade (24) from top to bottom successively, the outlet of boiler tail flue gas air supply duct (2) and coal slime input channel (1) is all positioned at the broken casing of sieve (22) and is positioned at the top of first order cut-off blade (23), the entrance of coal slime dry powder negative pressure transportation pipeline (3) is positioned at the bottom of the broken casing of sieve (22), coal slime dry powder negative pressure transportation pipeline (3) is provided with centrifugal blower (4),
Motor A(5) output shaft on by shaft coupling A(6) helical gear A(7 is installed), helical gear A(7) with helical gear B(9) be meshed, helical gear B(9) on screen cloth gangbar (8) is installed, screen cloth gangbar (8) is passed the top center point of the broken casing of sieve (22) and is run through first order cut-off blade (23) and second level cut-off blade (24), screen cloth gangbar (8) is provided with from top to bottom successively first order screen cloth (10) and second level screen cloth (11), first order screen cloth (10) is positioned at the below of first order cut-off blade (23), second level screen cloth (11) is positioned at the below of second level cut-off blade (24).
2. a kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat according to claim 1, is characterized in that: the broken casing of described sieve (22) bottom is arranged on platform (27) by spring (26), and the quantity of spring (26) is several; Also comprise motor B(12), motor B(12) output shaft on by shaft coupling B(13) helical gear C(14 is installed), helical gear C(14) with helical gear D(15) be meshed, one end of drive link (28) is arranged on helical gear D(15) on, the other end of drive link (28) is arranged on hydraulic pump (19), hydraulic pump (19) is provided with hydraulic cylinder (20), the piston rod (21) of hydraulic cylinder (20) is fixedly mounted on the broken casing of sieve (22).
3. a kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat according to claim 1, it is characterized in that: the broken casing of described sieve (22) is cylinder, first order screen cloth (10) and second level screen cloth (11) are circle, and the diameter of first order screen cloth (10), the diameter of second level screen cloth (11) are all less than the diameter of the broken casing of sieve (22).
4. a kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat according to claim 2, is characterized in that: described piston rod (21) is arranged on the broken casing of sieve (22) by screw (25).
5. a kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat according to claim 3, is characterized in that: the mesh diameter of described first order screen cloth (10) is greater than the mesh diameter of second level screen cloth (11).
6. a kind of coal slime dry sieve crushing device utilizing boiler of power plant fume afterheat according to claim 3, is characterized in that: described first order screen cloth (10) and the material of second level screen cloth (11) are elastic caoutchouc.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497779.7A CN105170257B (en) | 2015-08-14 | 2015-08-14 | A kind of coal slime dry sieve crushing device of utilization boiler of power plant fume afterheat |
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| CN201510497779.7A CN105170257B (en) | 2015-08-14 | 2015-08-14 | A kind of coal slime dry sieve crushing device of utilization boiler of power plant fume afterheat |
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| CN105170257A true CN105170257A (en) | 2015-12-23 |
| CN105170257B CN105170257B (en) | 2017-10-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106673396A (en) * | 2017-01-23 | 2017-05-17 | 南京健友生化制药股份有限公司 | Sludge dryer |
| CN107244790A (en) * | 2017-01-23 | 2017-10-13 | 南京健友生化制药股份有限公司 | A kind of sludge rapid dryer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107244790A (en) * | 2017-01-23 | 2017-10-13 | 南京健友生化制药股份有限公司 | A kind of sludge rapid dryer |
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| Publication number | Publication date |
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| CN105170257B (en) | 2017-10-24 |
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