CN112777912A - Spiral propelling type sludge drying device - Google Patents
Spiral propelling type sludge drying device Download PDFInfo
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- CN112777912A CN112777912A CN202011511266.4A CN202011511266A CN112777912A CN 112777912 A CN112777912 A CN 112777912A CN 202011511266 A CN202011511266 A CN 202011511266A CN 112777912 A CN112777912 A CN 112777912A
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- inner rotor
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- rotary drum
- sludge drying
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- 238000001035 drying Methods 0.000 title claims abstract description 94
- 239000010802 sludge Substances 0.000 title claims abstract description 52
- 238000003756 stirring Methods 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003546 flue gas Substances 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 76
- 238000004140 cleaning Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 13
- 241000425571 Trepanes Species 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000005653 Brownian motion process Effects 0.000 abstract description 6
- 238000005537 brownian motion Methods 0.000 abstract description 6
- 239000002245 particle Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000002349 favourable effect Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 9
- 239000000428 dust Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/17—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
- B01F27/171—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing for disintegrating, e.g. for milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/91—Heating or cooling systems using gas or liquid injected into the material, e.g. using liquefied carbon dioxide or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a spiral push type sludge drying device which comprises a rack and a drying rotary drum, wherein the drying rotary drum comprises an outer rotary drum horizontally arranged on the rack and an inner rotor arranged in the outer rotary drum, two ends of the drying rotary drum are respectively provided with an inlet end and an outlet end, the inlet end is connected with an air inlet chamber used for introducing high-temperature gas, the outlet end is connected with an air outlet chamber used for discharging low-temperature hot flue gas, the drying rotary drum comprises a front section, a middle section and a rear section which are sequentially arranged from the inlet end to the outlet end, the inner rotor and the outer rotary drum rotate in the same direction, a plurality of stirring rods are arranged on the inner rotor, and the stirring rods are arranged on the inner rotor in a double. The invention provides a spiral push type sludge drying device which is high in drying efficiency and good in drying effect; drying in a Brownian motion mode, and drying uniformly; reduce the equipment wear and tear, improve equipment life.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a spiral push type sludge drying device.
Background
With the development of modern industry, a huge amount of various municipal domestic sludge and industrial sludge can be born all year round. The sludge drying technology is a common technology which can effectively reduce the water content of the sludge so as to facilitate the subsequent treatment of the sludge, and particularly is a process of heating the sludge in specially designed equipment and evaporating the water in the sludge. The method not only can effectively realize the effect of removing free water in the sludge, but also can quickly evaporate interstitial water, surface bound water and even internal bound water in the sludge, but also has long drying time. In addition, a centrifugal drying or electric heating method is adopted, the drying cost is low for centrifugal drying, but the reduction degree of the water content of the sludge is limited, and the water content of the sludge after centrifugal treatment is still high, so that the combustion requirement cannot be met; for electric heating, although the drying effect is good, extra energy is consumed, which results in higher cost. In addition, in the sludge drying process, the water content reaches 50% -55%, the sludge enters a sticky adhesive state, and drying equipment can generate great abrasion, so that the service life of the drying equipment is shortened.
The utility model discloses a "rotation type sludge drying device" that chinese patent literature was disclosed, its publication No. CN208933214U, including the stoving case, the top movable mounting of stoving case has the agitator tank, the bottom intercommunication on agitator tank right side has the unloading pipe, the right side intercommunication at agitator tank top has the feeding funnel, the welding of the left bottom of agitator tank has the fixed plate, the first motor of top fixedly connected with of fixed plate, the output shaft of first motor passes through shaft joint fixedly connected with agitator pipe. The utility model discloses a drive the agitator pipe through first motor and rotate, the rethread air-blower carries dry wind to the inside of agitator pipe and the inside of agitator tank through double-deck drying mechanism and carries out double-deck drying, and rethread drive mechanism reciprocates the agitator tank and prevents that mud from blockking up in unloading pipe department, though the device has improved drying efficiency to a certain extent, but the device is difficult to carry out drying or discharge to the mud of bottom, and is difficult to guarantee even mummification.
Disclosure of Invention
The invention provides a spiral propelling type sludge drying device, aiming at overcoming the problems of low drying efficiency, poor drying effect, uneven drying, larger abrasion generated in the installation process, influence on the service life of drying equipment and the like of the existing drying device, and the spiral propelling type sludge drying device has high drying efficiency and good drying effect; drying in a Brownian motion mode, and drying uniformly; reduce the equipment wear and tear, improve equipment life.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a screw propulsion formula sludge drying device, includes frame, mummification rotary drum, the mummification rotary drum includes that the level arranges the outer section of thick bamboo in the frame and installs the inside inner rotor of outer section of thick bamboo, is entrance point and exit end respectively at the both ends of mummification rotary drum, entrance point connection is used for letting in high temperature gas's air inlet chamber, the exit end is connected and is used for discharging the air outlet chamber of the hot flue gas of low temperature, the mummification rotary drum includes anterior segment, middle section and the back end that sets gradually from the entrance point to the exit end, inner rotor and outer same direction rotation of section of thick bamboo be provided with a plurality of puddlers on the inner rotor, the puddle. In the technical scheme, a rack is used for supporting the whole drying device, a drying rotary drum is used for drying wet sludge, wet materials enter the outer rotary drum through an inlet end, the wet materials close to the inlet end are gradually pushed towards an outlet end under the action of the co-rotation of the outer rotary drum and an inner rotor, in the process, a stirring rod is used for smashing the wet materials to enable the wet materials to be smashed into small blocks with wet surfaces, an air inlet chamber is used for introducing high-temperature gas, the smashed wet materials and the high-temperature gas are contacted with the surfaces of the broken wet materials to be rapidly dried while the high-temperature gas is introduced, the small blocks of materials are smashed into particles under the action of the stirring rod, the particles of the particles move towards the outlet end under the action of the high-temperature air flow of the air inlet chamber, in the moving process, the dried particles can be bonded with the particles with high humidity, and are separated again and slowly move towards the outlet to be finally, the brownian motion mode is formed, the uniform drying effect is achieved, after the whole sludge is dried to a certain degree, when the water content of the sludge reaches 50% -55%, the material is in a fine boiling particle shape and is not in an adhesive state, the problem that the sludge is in a viscous area is effectively solved, the equipment abrasion is reduced, and the service life of the equipment is greatly prolonged. In addition, the puddler is double helix form and arranges and is favorable to smashing wet material more fast, improves mummification efficiency to be favorable to advancing the material to the exit end.
Preferably, the distance between adjacent agitator arms increases from the inlet end to the outlet end. The puddler demonstrates from entrance point to the exit end promptly by close to dredging the setting, is favorable to the material of anterior segment to smash fast and pile up backward, avoids wet material to pile up in a large number at the anterior segment, simultaneously along with the mummification of material, the reduction of volume, need increase dwell time at middle section and back end, reduces the translation rate.
Preferably, a crushing tool is fixed to a stirring rod provided in a front section of the inner rotor. The crushing piece is favorable for rapidly crushing the materials into small wet materials and rapidly drying the materials by contacting with hot air, so that the contact area of the materials and the hot air is increased, the drying efficiency is improved, meanwhile, the hot air loss is also prevented, and the energy is saved.
Preferably, the crushing pieces are arranged into a plurality of crushing rods fixed on the stirring rod, and the crushing rods are arranged perpendicular to the stirring rod. Smash the stick perpendicular and puddler setting, increase the area of contact between crushing stick and the mud, be convenient for supplementary puddler with the material crushing graininess, change specific surface area rapidly to improve mummification efficiency.
Preferably, be provided with the trepanning in the rubbing crusher, the rubbing crusher establishes outside the puddler through the trepanning cover, rubbing crusher and clean sleeve including the crushing board and the clean sleeve that the integral type set up, crushing board perpendicular to puddler setting, clean sleeve and the coaxial setting of puddler are provided with reset spring between crushing board and inner rotor, are provided with first gasket on the side of inner rotor is kept away from to crushing board, are provided with the second gasket in the one end that clean sleeve is close to the inner rotor the one end that the inner rotor was kept away from to the puddler is provided with the anticreep chimb. When the inner rotor rotates, the crushing piece is arranged at the end part under the action of centrifugal force, the crushing plate is used for assisting the stirring rod to crush materials, so that the materials are quickly dried and uniformly dried when encountering high-temperature hot air, the cleaning sleeve is mainly used for cleaning the stirring rod, and when the rotating speed of the inner rotor changes, the cleaning sleeve moves on the stirring rod under the action of the reset spring and simultaneously discharges sludge adhered to the stirring rod; in addition, the setting of anticreep chimb is spacing to rubbing crusher, prevents that rubbing crusher from deviating from the puddler, and the setting of first gasket and second gasket is convenient for cushion when rubbing crusher strikes anticreep chimb or inner rotor, avoids striking many times and damages the life that the inner rotor influences the mummification device.
Preferably, the inner wall surface of the trepan boring is provided with a cleaning brush, and the side wall of the cleaning sleeve is provided with a plurality of sewage draining grooves. The cleaning brush is provided with to be favorable to avoiding the mud caking on the puddler to pile up, and the blowdown groove is used for discharging the downthehole mud of cover, prevents that accumulational mud from influencing the cleanness of mud on the puddler.
Preferably, a hot air guide plate is arranged on one side of the inner rotor close to the inlet end, the hot air guide plate is a circular plate, and a plurality of air guide holes arranged along the circle center of the circular plate in an annular array are arranged on the hot air guide plate; and a wind shield is arranged on one side of the inner rotor close to the air outlet end, the wind shield is a circular plate, and a distance H is reserved between the wind shield and the inner wall surface. The hot air guide plate is used for guiding hot air, so that the hot air is more reasonably dispersed, heat is effectively transferred to the material at a higher speed, and the drying efficiency is improved; the arrangement of the wind shield is favorable for avoiding inconvenience caused by the fact that dust in the drying rotary drum is discharged along with hot air, and the arrangement of the distance H is convenient for the hot air to be concentrated at the gap between the wind shield and the inner wall surface to be discharged, so that the drying product is conveniently taken out.
Preferably, the two ends of the outer rotating cylinder are provided with material blocking rings, the material blocking rings are arranged on the inner surface, a material selecting plate is arranged on the material blocking ring close to the outlet end, and the material selecting plate is fixed on the material blocking rings in a lifting mode. The setting of retaining ring is favorable to preventing that the material of not mummification from falling out from outer rotary drum, and the water content and the particle size of the drying product of highly being convenient for control through adjusting the select board.
Preferably, the inner wall surface of the outer rotary drum is provided with lifting plates which are uniformly arranged, and the lifting plates are of arc structures. The setting of lifting plate is convenient for when outer rotary drum rotates the mud of bottom is copied to rise to the landing of rising and is shed, and the comminuted and the mummification of being convenient for still are favorable to separating wet mud and the mud dust of mummification simultaneously, discharge the mud dust.
Preferably, the inner rotor is arranged obliquely, and one side of the inner rotor close to the inlet end is higher than one side of the inner rotor close to the outlet end. The outer rotary drum is horizontally arranged, so that the sludge at the bottom of the outer rotary drum is prevented from flowing in the outer rotary drum, the inner rotor is obliquely arranged, and when the outer rotary drum and the inner rotor rotate simultaneously, the sludge in the drying rotary drum is pushed from the inlet end to the outlet end along with the rotation of the inner rotor, so that the efficiency is improved, the air volume can be reduced, and the mechanical loss is reduced.
Therefore, the invention has the following beneficial effects: the drying efficiency is high, and the drying effect is good; drying in a Brownian motion mode, and drying uniformly; the abrasion of equipment is reduced, and the service life of the equipment is prolonged; effectively avoid the mud on the puddler to pile up.
Drawings
FIG. 1 is a schematic structural diagram of a screw-propelled sludge drying device according to the present invention;
FIG. 2 is a schematic view of a desiccant drum
FIG. 3 is a schematic view of the first A-section of FIG. 2;
FIG. 4 is a schematic view of the second part A of FIG. 2;
FIG. 5 is a cross-sectional view of the reducing member of FIG. 4;
FIG. 6 is a side view of the inlet end of the drying drum;
FIG. 7 is a side view of the exit end of the drying drum;
in the figure: 1. the drying device comprises a frame 2, a drying rotary drum 201, an outer rotary drum 202, an inner rotor 3, a stirring rod 301, an anti-falling convex edge 4, a crushing piece 401, a crushing rod 402, a crushing plate 403, a cleaning sleeve 404, a first gasket 405, a second gasket 406, a sewage discharge groove 407, a scraping plate 408, a cleaning brush 5, an air inlet chamber 6, an air outlet chamber 7, a sealing device 8, a lifting plate 9, a material inlet 10, a material outlet 11, an inlet end 12, an outlet end 13, a hot air guide plate 1301, an air guide hole 14, a wind shield 15, a material selecting plate 16, a material stop ring 17 and a return spring.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example 1:
in embodiment 1 shown in fig. 1, 2 and 3, a screw-propelling sludge drying device includes a frame 1, a drying drum 2 fixed on the frame 1, an air inlet chamber 5 and an air outlet chamber 6 connected to two ends of the drying drum 2 respectively, the drying drum 2 connected to the air inlet chamber 5 as an inlet end 11 and the air outlet chamber 6 as an outlet end 12, a material inlet 9 disposed at the inlet end 11, the drying drum 2 including a front section, a middle section and a rear section sequentially disposed from the inlet end 5 to the outlet end 6, the material inlet 9 disposed near the bottom of the outer drum 201, the material outlet 10 connected to the bottom of the outlet end 12, the drying drum 2 including an outer drum 201 horizontally disposed and an inner rotor 202 disposed in the outer drum 201, the inner rotor 202 and the outer drum 201 coaxially disposed, the outer drum 201 and the inner rotor 202 rotating in the same direction, the inner rotor 202 having a plurality of stirring rods 3, the stirring rods 3 are arranged on the inner rotor 202 in a double-spiral manner, and the pitch between adjacent stirring rods 3 is gradually increased from the inlet end 11 to the outlet end 12, that is, the stirring rods 3 are arranged from dense to sparse from the inlet end 11 to the outlet end 12. In addition, a crushing member 4 is provided on the stirring rod 3, the crushing member 4 is provided as a crushing rod 401, and the crushing rod 401 is provided perpendicularly to the stirring rod 3.
In the technical scheme, a frame 1 is used for supporting the whole drying device, a drying rotary drum 2 is used for drying wet sludge, wet materials enter an outer rotary drum 201 through an inlet end 11, the wet materials close to the inlet end 11 are gradually pushed towards an outlet end 12 under the action of the co-rotation of the outer rotary drum 201 and an inner rotor, in the process, a stirring rod 3 is used for smashing the wet materials to enable the wet materials to be smashed into small blocks with wet surfaces, an air inlet chamber 5 is used for introducing high-temperature gas, the smashed wet materials and the high-temperature gas contact the surfaces of the smashed wet materials to be rapidly dried while the high-temperature gas is introduced, the small blocks of materials are smashed into particles under the action of the stirring rod 3, the particles move towards the outlet end 12 under the action of the high-temperature air flow of the air inlet chamber 5, in the moving process, the dried particles can be bonded with the particles with high humidity, and are separated again and slowly move towards the outlet after reaching a certain dryness degree and finally are discharged, the brownian motion mode is formed, the uniform drying effect is achieved, after the whole sludge is dried to a certain degree, when the water content of the sludge reaches 50% -55%, the material is in a fine boiling particle shape and is not in an adhesive state, the problem that the sludge is in a viscous area is effectively solved, the equipment abrasion is reduced, and the service life of the equipment is greatly prolonged. In addition, the stirring rod 3 is arranged in a double-spiral manner, so that wet materials can be smashed more quickly, the drying efficiency is improved, the materials can be pushed towards the outlet end 12, the stirring rod 3 is arranged from dense to sparse from the inlet end 11 to the outlet end 12, the materials at the front section can be quickly smashed and accumulated backwards, a large amount of accumulation of the wet materials at the front section is avoided, meanwhile, along with drying and volume reduction of the materials, the retention time needs to be increased at the middle section and the rear section, and the moving speed is reduced; smash excellent 401 perpendicular and puddler 3 setting, increase the area of contact between crushing excellent 401 and the mud, be convenient for supplementary puddler 3 with the material crushing graininess, change specific surface area rapidly to improve mummification efficiency. In addition, the arrangement of the crushing piece 4 and the stirring rod 3 also has the function of placing hot air loss, and the energy is effectively saved.
In addition, the air inlet chamber 5 is used for accessing and distributing hot flue gas, the upper limit of the inlet air temperature provided by the inlet end 11 of the air inlet chamber 5 is 600-700 ℃, and high-temperature air enters the rotor drier to contact with the crushed small wet materials to quickly dry the wet materials, so that the drying effect is improved, and the tail gas treatment capacity is reduced; the temperature of the outlet of the drying rotary drum 2 is 150-200 ℃, the low-temperature hot flue gas is collected and discharged by the gas outlet chamber 6, and the low-temperature flue gas, the dried material and a very small amount of dust are settled and separated. In the whole drying process, the temperature of the sludge in the high-temperature gas is slowly raised in a Brownian motion mode, the temperature of the sludge is inconvenient to maintain at 60-80 ℃, the decomposition of organic matters is reduced, the generation of odor in the drying process is reduced, and the tail gas treatment cost is reduced.
In addition, sealing devices 7 are arranged between the outer rotary drum 201 and the air inlet chamber 5 and between the outer rotary drum 201 and the air outlet chamber 6, and the arrangement of the sealing devices 7 effectively prevents gas leakage when the drying device operates.
Further, as shown in fig. 2, 6, and 7, a hot air guide plate 13 is disposed on one side of the inner rotor 202 close to the inlet end 11, the hot air guide plate 13 is configured as a circular plate, and a plurality of air guide holes 1301 arranged along a circular center of the circular plate in an annular array are disposed on the hot air guide plate 13; a wind shield 14 is arranged on one side of the inner rotor 202 close to the air outlet end, the wind shield 14 is a circular plate, a distance H exists between the wind shield 14 and the inner wall surface, and a distance K exists between the wind shield and the material selecting plate. The hot air guide plate 13 is used for guiding hot air, so that the hot air is more reasonably dispersed, heat is effectively transferred to the material at a higher speed, and the drying efficiency is improved; the wind shield 14 is arranged to avoid inconvenience caused by discharge of dust in the drying drum 2 along with hot air, and the arrangement of the distance H is convenient for the hot air to be concentrated in a gap between the wind shield 14 and the inner wall surface to be discharged, so that a drying product is brought out conveniently.
Further, both ends of the outer rotating cylinder 201 are provided with material blocking rings 16, the material blocking rings 16 are arranged on the inner surface, a material selecting plate 15 is arranged on the material blocking ring 16 close to the outlet end 12, and the material selecting plate 15 is fixed on the material blocking rings 16 in a lifting manner. The arrangement of the material blocking ring 16 is favorable for preventing the non-dried material from falling out of the outer rotary drum 201, and the water content and the particle size of the dried product can be conveniently controlled by adjusting the height of the material selecting plate 15.
Further, uniformly arranged lifting plates 8 are provided on the inner wall surface of the outer drum 201, and the lifting plates 8 are provided in an arc-shaped configuration. The setting of lifting plate 8 is convenient for when outer rotary drum 201 rotates the mud of bottom is copied to rise to the landing of rising and is shed, and the comminuted and the mummification of being convenient for still are favorable to separating wet mud and the mud dust that has anhydrated simultaneously, discharge the mud dust.
Example 2:
as shown in fig. 4 and 5, the embodiment 2 is basically the same as the embodiment 1, except that: crushing member 4 includes that the integral type sets up at crushing plate 402 and clean sleeve 403, crushing plate 402 perpendicular to puddler 3 sets up, and clean sleeve 403 and the coaxial setting of puddler 3, be provided with the trepanning on crushing member 4, crushing member 4 overlaps outside puddler 3 through the trepanning, be provided with reset spring 17 between crushing plate 402 and inner rotor 202, it is provided with first gasket 404 on the side of inner rotor 202 to keep away from at crushing plate 402, the one end that is close to inner rotor 202 at clean sleeve 403 is provided with second gasket 405, the one end of keeping away from inner rotor 202 at puddler 3 is provided with anticreep chimb 301. In addition, a cleaning brush 408 is provided on the inner wall surface of the trepan, and a plurality of sewage discharge grooves 406 are provided on the side wall of the cleaning sleeve 403. The diameter of the trepan of the cleaning sleeve 403 is larger than the diameter of the stirring rod 3. To prevent sludge build up on the outer surface, a radius is provided between the cleaning sleeve 403 and the shredder plate 402.
Further, a scraping plate 407 is further disposed on the pulverizing plate 402, the scraping plate 407 is disposed on a side of the pulverizing plate away from the inner rotor, the pulverizing member 4 is away from the inner rotor 202 under the action of centrifugal force, when the first gasket 404 is disposed in contact with the anti-falling convex edge 301, the scraping plate 407 just contacts the inner wall of the outer sleeve, and the scraping plate 407 cleans the inner wall of the outer rotating cylinder 201 during the rotation of the inner rotor 202.
Further, rubbing crusher 4 sets up on the puddler 3 of anterior segment, because wet material gets into from material import 9, wet material has formed little cubic or graininess mostly when well back end, therefore rubbing crusher 4 sets up and is favorable to smashing fast just letting in the wet material in the mummification rotary drum 2 at the puddler 3 of anterior segment, is convenient for improve mummification efficiency.
In addition, can also set up a plurality of rubbing crusher 4 on a puddler 3, through spring coupling between the adjacent rubbing crusher 4, and the spring both ends are fixed on the crushing board 402 of adjacent rubbing crusher 4, are convenient for increase rubbing crusher 4 and wet area of contact between the material, are convenient for improve the crushing speed of wet material, and then improve mummification efficiency.
Example 3:
the embodiment 3 is basically the same as the embodiment 1, except that: the inner rotor 202 is disposed obliquely, and the side of the inner rotor 202 near the inlet end 11 is higher than the side near the outlet end 12. The outer drum 201 is horizontally arranged, so that the sludge at the bottom of the outer drum 201 is prevented from flowing in the outer drum 201, the inner rotor 202 is obliquely arranged, and when the outer drum 201 and the inner rotor 202 rotate simultaneously, the sludge in the drying drum 2 is pushed from the inlet end 11 to the outlet end 12 along with the rotation of the inner rotor 202, so that the efficiency is improved, the air volume can be reduced, and the mechanical loss is reduced.
Example 4:
the embodiment 4 is basically the same as the embodiment 1, except that: the inner rotor 202 and the outer rotor eccentric shaft are arranged, namely the axes of the inner rotor 202 and the outer rotor are not coincident but parallel, the arrangement is convenient for reducing the required size of the stirring rod 3, and the requirement on the rigidity of the stirring rod 3 is lower, so that the manufacturing process of the stirring rod 3 is simplified, and the cost is reduced.
It should be noted that "sludge" in the above description is "wet material", and the use of the words "front", "rear", "left", "right", "upper" and "lower" refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The above examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (10)
1. A screw-propelled sludge drying device comprises a frame (1) and a drying rotary drum (2), the drying drum (2) comprises an outer drum (201) horizontally arranged on the frame (1) and an inner rotor (202) arranged in the outer drum (201), an inlet end (11) and an outlet end (12) are respectively arranged at the two ends of the drying drum (2), it is characterized in that the inlet end (11) is connected with an air inlet chamber (5) for introducing high-temperature gas, the outlet end (12) is connected with an air outlet chamber (6) for discharging low-temperature hot flue gas, the drying rotary drum (2) comprises a front section, a middle section and a rear section which are sequentially arranged from an inlet end (5) to an outlet end (6), the inner rotor (202) and the outer rotary drum (201) rotate in the same direction, the inner rotor (202) is provided with a plurality of stirring rods (3), and the stirring rods (3) are arranged on the inner rotor (202) in a double-helix shape.
2. A screw-propelled sludge drying apparatus as claimed in claim 1 wherein the distance between adjacent agitator bars (3) increases from the inlet end (11) to the outlet end (12).
3. The screw-propelled sludge drying device as claimed in claim 1, wherein the stirring rod (3) arranged at the front section of the inner rotor (202) is fixedly provided with the crushing member (4).
4. A screw-propelled sludge drying apparatus as claimed in claim 3 wherein the crushing member (4) is provided as a plurality of crushing rods (401) fixed on the stirring rod (3), the crushing rods (401) being arranged perpendicular to the stirring rod (3).
5. The screw-propelled sludge drying device of claim 3, a sleeve hole is arranged in the crushing piece (4), the crushing piece (4) is sleeved outside the stirring rod (3) through the sleeve hole, the crushing piece (4) comprises a crushing plate (402) and a cleaning sleeve (403) which are integrally arranged, the crushing plate (402) is perpendicular to the stirring rod (3), the cleaning sleeve (403) and the stirring rod (3) are coaxially arranged, a return spring (17) is arranged between the crushing plate (402) and the inner rotor (202), a first gasket (404) is arranged on one side surface of the crushing plate (402) far away from the inner rotor (202), a second gasket (405) is arranged at one end of the cleaning sleeve (403) close to the inner rotor (202), an anti-falling convex edge (301) is arranged at one end, far away from the inner rotor (202), of the stirring rod (3).
6. The screw-propelled sludge drying device as claimed in claim 5, wherein the inner wall surface of the trepan is provided with a cleaning brush (408), and the side wall of the cleaning sleeve (403) is provided with a plurality of sewage draining grooves (406).
7. The screw-propelled sludge drying device according to claim 1, wherein a hot air guide plate (13) is arranged on one side of the inner rotor (202) close to the inlet end (11), the hot air guide plate (13) is a circular plate, and a plurality of air guide holes (1301) arranged along the circle center of the circular plate in an annular array are arranged on the hot air guide plate (13); a wind shield (14) is arranged on one side, close to the air outlet end, of the inner rotor (202), the wind shield (14) is a circular plate, and a distance H exists between the wind shield (14) and the inner wall surface.
8. The screw-propelled sludge drying device as claimed in any one of claims 1 to 7, wherein material blocking rings (16) are arranged at both ends of the outer rotating cylinder (201), the material blocking rings (16) are arranged on the inner surface, a material selecting plate (15) is arranged on the material blocking ring (16) close to the outlet end (12), and the material selecting plate (15) is fixed on the material blocking rings (16) in a lifting manner.
9. The screw-propelled sludge drying device as claimed in any one of claims 1 to 7, wherein the inner wall surface of the outer rotating drum (201) is provided with lifting plates (8) which are uniformly arranged, and the lifting plates (8) are arranged in an arc structure.
10. A screw-propelled sludge drying apparatus as claimed in any one of claims 1 to 7 wherein the inner rotor (202) is inclined such that the side of the inner rotor (202) adjacent the inlet end (11) is higher than the side adjacent the outlet end (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011511266.4A CN112777912A (en) | 2020-12-18 | 2020-12-18 | Spiral propelling type sludge drying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011511266.4A CN112777912A (en) | 2020-12-18 | 2020-12-18 | Spiral propelling type sludge drying device |
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| CN112777912A true CN112777912A (en) | 2021-05-11 |
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| CN202011511266.4A Pending CN112777912A (en) | 2020-12-18 | 2020-12-18 | Spiral propelling type sludge drying device |
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