CN109373768B - Vertical type circulating cooling machine with circulating trolley - Google Patents
Vertical type circulating cooling machine with circulating trolley Download PDFInfo
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- CN109373768B CN109373768B CN201811215842.3A CN201811215842A CN109373768B CN 109373768 B CN109373768 B CN 109373768B CN 201811215842 A CN201811215842 A CN 201811215842A CN 109373768 B CN109373768 B CN 109373768B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
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- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
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Abstract
The invention discloses a vertical circulating cooler with a circulating trolley, which comprises the circulating trolley and a rail device, wherein the circulating trolley is arranged on the circulating trolley; the circulating trolley comprises wheel devices and balance wheel devices, and the two groups of wheel devices and balance wheel devices which are arranged in a vertically staggered mode are symmetrically fixed on the left side wall and the right side wall of the circulating trolley respectively; the two groups of track devices are respectively arranged on the inner walls of the two sides of the cooling system in a surrounding manner, and each track device comprises a wheel caterpillar track, a balance wheel caterpillar track and a turnover track; the wheel caterpillar tracks drive the circulating trolley to circularly convey high-temperature sintered mineral aggregate in the cooling system for cooling through the wheel devices; the balance wheel caterpillar track is guided by the balance wheel device and tensions the circulating trolley; during unloading, the balance wheel device moves along the guide of the overturning track, so that the circulating trolley overturns for unloading. The vertical circulating cooler provided by the invention circularly and repeatedly conveys the sintered mineral aggregate through the circulating trolley, has the advantages of simple structure, convenience in operation and high degree of mechanization, and the circulating trolley keeps the state of upward opening except for overturning and discharging.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a vertical circulating cooler with a circulating trolley.
Background
The iron and steel industry is a national important industrial foundation, and sintering is an important link for providing raw materials for blast furnaces in the modern iron and steel production process. The iron ore sintering is to mix various powdery iron-containing raw materials including iron-containing powder recovered in the steel production process with a certain amount of fuel and flux in proportion, add water and mix uniformly to prepare granular sintering mixture, and distribute the mixture on a sintering machine to ignite, draw air and sinter into blocks. And the high-temperature sintering ore enters a blast furnace for smelting after being crushed, screened and cooled.
The sintered ore is mainly fed to the blast furnace in the form of cold sintered ore, so that a cooling device is required to cool the sintered ore. Different cooling devices determine different waste heat recovery processes, and the research and development of a source equipment cooler of the waste heat recovery system is the gravity center of the waste heat power generation system. The cooler can recover a large amount of heat emitted from the sintered ore, and then store the heat or use the heat for cogeneration. The current cooling machines are mainly classified into a belt type, a ring type and a vertical type according to the place and characteristics of their utilization.
The belt cooler is applied earliest and has the most mature technology, but has the defects of not compact structure, large occupied area, low waste heat recovery utilization rate and the like, and has a large amount of hot air loss in the cooling process and less practical application.
Compared with a belt cooler, the ring cooler is improved in performance and stability, but has the problems of poor sealing, high air leakage rate and the like, and the waste heat resource recovery rate still has a larger improvement space.
The vertical cooler is a novel cooler structure which is provided by people aiming at the problems of serious air leakage, difficult bulk material collection, high energy consumption, multiple faults and the like of the traditional cooler, and leads to the unsatisfactory cooling effect and waste heat recovery effect, and the novel cooler structure consists of a feeding device, an air draft device, a machine body device, an air outlet device and a discharging device. The hot sintering mineral aggregate is loaded into the cooling machine from the top feeding device after being crushed, then is blown into cooling air through the air outlet device to cool the high-temperature mineral aggregate, and the top air draft device starts working at the same time, becomes high-temperature flue gas through the cooling air of the mineral aggregate, is discharged from the air draft device, enters the waste heat recycling system, and is discharged from the bottom discharging device of the cooling machine after the sintering mineral aggregate reaches the cooling temperature. The cooling air of the vertical cooler penetrates through the sinter bed from bottom to top, and the sinter and the air exchange heat in a countercurrent heat exchange mode, so that the heat exchange performance and the waste heat recovery efficiency of the cooler are improved.
But because the maturity of the vertical cooling machine is not high, the vertical cooling machine has obvious defects: the hot sinter is loaded by adopting a sinter tank car, and the sinter is conveyed to the cooling machine by utilizing other conveying devices, so that the operation cost and the maintenance cost are increased; the material layer thickness in the cooler is accumulated to be higher, so that the loss of cooling air pressure is large, and the requirement on a fan is high; because the performance of the sintering ore particles with different particle sizes is different, the sintering ore particles with different particle sizes are mixed with each other along with the increase of the height of a material bed, the large-particle ore material is wrapped by the small-particle ore material, the uniformity of the porosity inside the large-particle ore material is gradually deteriorated, the sintering ore is not uniformly cooled in the operation process, and the phenomena of 'ineffective wind' and 'red ore' are generated. Therefore, how to realize that a series of processes such as material conveying, material distribution, material discharging and the like in the cooler are finished in the cooler without other external equipment under the condition of ensuring the loading capacity of the cooler; how to reduce or even avoid the phenomenon of 'red ore' caused by uneven cooling, reduce the cooling wind pressure, further improve the heat exchange efficiency and the cooling effect of a cooling machine, and furthest recycle the sintering waste heat resources, is a problem that the technical staff in the field needs to solve urgently.
Disclosure of Invention
Aiming at the problems in the existing cooling machine, the invention provides a vertical circulating cooling machine with a circulating trolley, the cooling machine is provided with a closed circulating cooling system, high-temperature sintering mineral aggregate is stably conveyed in the cooling system through a plurality of circulating trolleys, the cooling air pressure is effectively reduced, and the sintering ore quality and the flue gas waste heat recovery utilization rate are improved.
In order to achieve the purpose, the specific technical scheme of the invention is as follows:
a vertical circulation cooler with a circulation trolley is characterized in that the cooler is provided with a closed circulation cooling system and comprises the circulation trolley and a rail device;
the top of the circulating trolley is provided with an opening and comprises wheel devices and balance wheel devices, and the two groups of wheel devices and the balance wheel devices which are arranged in a vertically staggered mode are symmetrically fixed on the left side wall and the right side wall of the circulating trolley respectively;
the two groups of track devices are respectively arranged on the inner walls of the two sides of the cooling system in a surrounding manner, and each track device comprises a wheel chain rail, a balance wheel chain rail and a turnover track; the wheel chain rail and the balance wheel chain rail are arranged on the inner wall of the cooling system in parallel, and the arrangement positions of the wheel chain rail and the balance wheel chain rail are matched with the positions of the wheel device and the balance wheel device; the overturning track is arranged on the side wall of the circulating trolley;
the wheel caterpillar chain drives the circulating trolley to circularly and repeatedly convey high-temperature sintered mineral aggregate in the cooling system for cooling through the wheel device; the balance wheel caterpillar track is guided by the balance wheel device and tensions the circulating trolley; the balance wheel device is connected with the overturning track, and during unloading, the balance wheel device moves along the overturning track in a guiding mode, so that the circulating trolley overturns for unloading.
Furthermore, limit stops are arranged at two ends of the overturning track.
Further, the balance wheel device comprises a balance wheel, a balance wheel axle, a balance wheel bearing, a positioning column pin and a balance wheel axle pin hole; the balance wheel is fixed on the balance wheel shaft through the balance wheel bearing, the balance wheel is connected with the balance wheel chain rail, two balance wheel shaft pin holes are vertically and crossly arranged on the end face of the balance wheel shaft in the horizontal direction and the vertical direction, and the positioning pin can position the balance wheel shaft on the overturning track through the balance wheel shaft pin holes in the vertical direction.
Furthermore, the circulating trolley further comprises an electric hydraulic push rod, the electric hydraulic push rod comprises a motor and a piston rod, the motor provides power for the piston rod, and the piston rod is connected with the positioning pin; under the driving of the motor, the piston rod pulls the positioning pin out of the balance wheel axle pin hole or enters the balance wheel axle pin hole.
Furthermore, a pair of photoelectric sensors are arranged at preset positions of the overturning track, the axes of the sensor transmitting end and the sensor receiving end of each photoelectric sensor and the axis of the balance wheel axle pin hole in the horizontal direction on the balance wheel axle are in the same horizontal position, and the photoelectric sensors sense whether the balance wheel axle pin hole in the horizontal direction is in the horizontal state or not so as to judge whether the return trolley is reset or not.
Further, the balance wheel device also comprises a balance wheel supporting arm, a balance wheel pin and a balance wheel end cover; two ends of the balance wheel pin are respectively positioned and arranged on gear teeth on two sides of the balance wheel, the balance wheel is positioned on the balance wheel supporting arm through the balance wheel pin, and the balance wheel supporting arm is fixed on the balance wheel caterpillar track; the balance wheel is axially positioned on the balance wheel shaft through the balance wheel end cover.
Further, the track device also comprises a caterpillar driving wheel, the caterpillar driving wheel is arranged at a preset position on the inner wall of the cooling system, and the caterpillar driving wheel drives the wheel caterpillar to circularly run.
Furthermore, the rail device also comprises a wheel caterpillar track supporting wheel and a balance wheel caterpillar track supporting wheel, wherein the wheel caterpillar track and the balance wheel caterpillar track are respectively arranged on the inner wall of the cooling system in parallel through the wheel caterpillar track supporting wheel and the balance wheel caterpillar track supporting wheel, the arrangement positions of the wheel caterpillar track and the balance wheel device are matched with each other, and the wheel caterpillar track and the balance wheel caterpillar track respectively drive the wheel caterpillar track supporting wheel and the balance wheel caterpillar track supporting wheel to roll.
Further, the rail device also comprises trolley reset wheels, the reset wheels are arranged on the side wall above the position where the circulating trolley is to be discharged and the position where the circulating trolley is to be discharged, the reset wheels are matched with the circulating trolley in height in an inclined state, and the reset wheels enable the circulating trolley to reset after discharging is finished by pressing down the circulating trolley.
Further, the wheel device comprises a wheel, a wheel supporting arm, a wheel axle, a wheel pin, a wheel bearing and a wheel end cover;
the two ends of the wheel pin are respectively positioned and arranged on the gear teeth on the two sides of the wheel, and the wheel pin positions the wheel on the wheel caterpillar track through the wheel supporting arm; the wheels are connected with the wheel axles through the wheel bearings and are axially positioned on the wheel axles through the wheel end covers, and the wheel axles are fixed on the side walls of the circulating trolley.
The invention has the beneficial effects that:
1. the heat exchange mode of the vertical circulating cooler is a countercurrent mode, the cooling air cools the sinter in the circulating trolley from bottom to top, and compared with the traditional vertical cooler, the heat exchange effect is remarkably improved, so that the cooling efficiency is improved, and the utilization rate of the waste heat of the flue gas is improved.
2. The arrangement of the wheels and the balance wheels ensures that the circulation trolley keeps an upward opening state in the area except the unloading area, thereby ensuring the stable operation of the circulation trolley and ensuring the smooth operation of the sinter cooling process; meanwhile, the phenomenon of overturning and material leakage caused by unstable operation of the circulating trolley is reduced.
3. The circulation platform truck is equipped with the upset track with stabilizer matched with, and upset track both ends are equipped with limit stop, and the district of unloading is equipped with the wheel that resets, can make the circulation platform truck carry out the turnover at the discharge site position and unload, and at the in-process of unloading, limit stop can prevent that the stabilizer from breaking away from the upset track, and the circulation platform truck moves along the upset track under the eccentric force effect, resets the wheel after the unloading and makes the circulation platform truck resume the ascending state of opening. The circulating trolley has the advantages of simple structure, convenience in operation and higher degree of mechanization.
4. The sintering ore is respectively stored in the circulating trolleys, the material bed cooling height is effectively reduced, the problem of air permeability deterioration caused by overhigh mineral aggregate accumulation is avoided, the cooling air pressure is also reduced, and the appearance of red ore after cooling is avoided.
5. The sealing effect and the environmental protection performance of the circulating cooler are improved by the sealing device.
Drawings
FIG. 1 is a schematic view of a vertical circulation cooler with a circulation trolley according to the present invention;
FIG. 2 is a schematic view of the structure of the circulation trolley of the present invention;
FIG. 3 is a main view of the circulation trolley of the present invention;
FIG. 4 is a top view of the circulation trolley of the present invention;
FIG. 5 is a partial cross-sectional view of the A-A cycle carriage of FIG. 4;
FIG. 6 is a partial cross-sectional view of the B-B cycle carriage of FIG. 4;
FIG. 7 is a schematic view of the balance wheel axle fixation after the discharge reset of the circulating trolley of the invention;
FIG. 8 is a partial cross-sectional view of the C-C cycle carriage of FIG. 4;
FIG. 9 is a schematic view of the engagement of the caterpillar drive wheel with the wheel caterpillar of the present invention.
Wherein: 1-intermittent feeding device, 2-flue gas recovery device, 3-barrel device, 4-circulating trolley, 4.1-wheel device, 4.1.1-wheel, 4.1.2-wheel supporting arm, 4.1.3-wheel axle, 4.1.4-wheel pin, 4.1.5-wheel bearing, 4.1.6-wheel end cover, 4.2-balance wheel device, 4.2.1-balance wheel, 4.2.2-balance wheel supporting arm, 4.2.3-balance wheel axle, 4.2.4-balance wheel pin, 4.2.5-balance wheel bearing, 4.2.6-balance wheel end cover, 4.2.7-positioning pin, 4.2.8-balance wheel axle pin hole, 4.3-sealing device, 4.4-grid plate, 4.5-balance wheel supporting plate, 4.6-trolley frame, 4.7-wheel supporting plate, 4.8-framework push rod, 4.9-electric hydraulic pressure upright post, 4.9.1-motor, 4.9.2-piston rod, 5-air supply device, 6-bulk material collection device, 7-sealing area I, 8-unloading area, 9-sealing area II, 10-idle running area, 11-rail device, 11.1-wheel chain rail, 11.2-balance wheel chain rail, 11.3-chain rail driving wheel, 11.4-overturning rail, 11.4.1-limit stop, 11.4.2-sensor transmitting end, 11.4.3-sensor receiving end, 11.5-wheel chain rail supporting wheel, 11.6-reset wheel and 11.7-balance wheel chain rail supporting wheel.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
The terms of orientation such as up, down, left, right, front, and rear in the present specification are established based on the positional relationship shown in the drawings. The corresponding positional relationship may also vary depending on the drawings, and therefore, should not be construed as limiting the scope of protection.
In the present invention, the terms "mounted," "connected," "fixed," and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected or capable of communicating with each other, directly connected, indirectly connected through an intermediate medium, or communicated between two components, or interacting between two components. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
This embodiment describes a vertical circulation cooler having a circulation cart. As shown in fig. 1, the cooling machine includes: the device comprises an intermittent feeding device 1, a flue gas recovery device 2, a barrel device 3, a circulating trolley 4, an air supply device 5, a bulk material collecting device 6, a first sealing area 7, a discharging area 8, a second sealing area 9, an idle running area 10 and a rail device 11.
The cylinder device 3 is installed in a vertical shape and is a main generation area for cooling high-temperature sintering mineral aggregates. The intermittent feeding device 1 is arranged in the middle of the top of the barrel device 3, and the sintered mineral aggregate enters the barrel device 3 from the intermittent feeding device 1 to be cooled. The flue gas recovery device 2 is arranged on the outer side of the top of the cylinder device 3 and used for recovering and cooling flue gas and sending the flue gas to a waste heat recovery system for waste heat recycling. The two air supply devices 5 are symmetrically arranged at the outer side of the bottom of the cylinder device 3 and blow cooling air into the cylinder device 3. The bulk material collecting device 6 is arranged in the middle of the bottom of the barrel device 3 and used for recovering scattered small crushed materials and sending the crushed materials into a sintering process. The intermittent feeding device 1, the flue gas recovery device 2, the barrel device 3, the air supply device 5 and the bulk material collecting device 6 form a cooling area of the cooling machine, and the cooling area and the bulk material collecting device jointly act to cool the high-temperature sintering mineral aggregate in the barrel device 3.
The first sealing area 7, the cooling area, the discharging area 8, the second sealing area 9 and the idle running area 10 are sequentially connected to form a closed-cycle cooling system. Two sets of track devices 11 are symmetrically arranged on the inner walls of the two sides of the cooling system, as shown in fig. 3, the track devices 11 comprise wheel chain rails 11.1, balance wheel chain rails 11.2 and overturning tracks 11.4. The circulating trolley 4 is driven by the wheel chain rail 11.1 to circulate in the cooling system (the circulating direction is clockwise in the embodiment) to convey high-temperature sintering mineral aggregate in a reciprocating mode, the balance wheel chain rail 11.2 is used for guiding and tensioning the circulating trolley 4, and the overturning rail 11.4 is arranged on the side wall of the circulating trolley 4 and used for enabling the circulating trolley 4 to overturn and unload the mineral aggregate.
The circulating trolley 4 loads high-temperature sintering mineral aggregate when the circulating trolley 4 is arranged at the upper part in the barrel device 3 and carries the high-temperature sintering mineral aggregate to pass through the cooling area, cooling air is blown into the air supply device 5 from bottom to top to cool the high-temperature sintering mineral aggregate, the circulating trolley 4 enters the unloading area 8 to overturn and unload at a specified position under the action of the overturning track 11.4 after cooling, the circulating trolley 4 sequentially passes through the sealing area II 9 and the idle running area 10, returns to the sealing area I7 and is ready to enter the cooling area again to load the high-temperature sintering mineral aggregate.
As shown in fig. 2-4, the top of the circulating trolley 4 is open, and the circulating trolley 4 comprises a wheel device 4.1, a balance wheel device 4.2, a sealing device 4.3, a grate plate 4.4, a balance wheel support plate 4.5, a trolley framework 4.6, a wheel support plate 4.7, a framework upright post 4.8 and an electric hydraulic push rod 4.9.
Two sets of wheel devices 4.1 and balance wheel devices 4.2 which are arranged in a vertically staggered mode are symmetrically arranged on the left side wall and the right side wall of the circulating trolley 4 respectively, and the overturning tracks 11.4 are fixed on the side walls of the circulating trolley 4 through balance wheel supporting plates 4.5 and wheel supporting plates 4.7.
As shown in fig. 4 and 5, the wheel device 4.1 is located at the position of the right of the center of the side wall of the circulating trolley 4, and the wheel device 4.1 comprises a wheel 4.1.1, a wheel supporting arm 4.1.2, a wheel axle 4.1.3, a wheel column pin 4.1.4, a wheel bearing 4.1.5 and a wheel end cover 4.1.6. Two ends of the wheel pin 4.1.4 are respectively positioned on the gear teeth on two sides of the wheel 4.1.1, the wheel 4.1.1 is positioned at a preset position on the wheel supporting arm 4.1.2 through the wheel pin 4.1.4, and the wheel supporting arm 4.1.2 is fixed on the wheel caterpillar 11.1. The wheel 4.1.1 is connected to the wheel axle 4.1.3 via a wheel bearing 4.1.5 and is axially positioned on the wheel axle 4.1.3 via a wheel end cap 4.1.6, so that the wheel 4.1.1 can rotate about the wheel axle 4.1.3 but cannot be displaced in a sliding manner. Since the wheel 4.1.1 is fixed to the wheel support arm 4.1.2 and the wheel support arm 4.1.2 is fixed to the wheel track 11.1, the wheel axle 4.1.3 is rotatable relative to the wheel track 11.1 without being able to undergo a sliding displacement. One end of the wheel axle 4.1.3 is fixed on the side wall of the circulating trolley 4 through the wheel support plate 4.7, therefore, the circulating trolley 4 and the wheel caterpillar track 11.1 can do relative rotation but can not generate relative sliding displacement in the synchronous moving process.
As shown in fig. 2 and 4, the balance wheel device 4.2 is located at the upper right position of the wheel device 4.1 on the side wall of the circulating trolley 4, which can ensure that the circulating trolley 4 always keeps an upward opening and stable running state in other running processes except for the inclined state in the unloading process.
As shown in fig. 6 and 7, the balance wheel assembly 4.2 is similar in structure and installation to the wheel assembly 4.1 and includes a balance wheel 4.2.1, a balance wheel support arm 4.2.2, a balance wheel axle 4.2.3, a balance wheel pin 4.2.4, a balance wheel bearing 4.2.5, a balance wheel end cap 4.2.6, a positioning pin 4.2.7, and a balance wheel axle pin hole 4.2.8. The both ends of balance wheel pin 4.2.4 are fixed a position respectively and are set up on the both sides teeth of a cogwheel of balance wheel 4.2.1, fix a position balance wheel 4.2.1 on balance wheel support arm 4.2.2 through balance wheel pin 4.2.4, and balance wheel support arm 4.2.2 is fixed on balance wheel caterpillar track 11.2. The balance wheel 4.2.1 is fixed on the balance wheel axle 4.2.3 through a balance wheel bearing 4.2.5 and is axially positioned on the balance wheel axle 4.2.3 through a balance wheel end cover 4.2.6, and the balance wheel 4.2.1 can only rotate relative to the balance wheel axle 4.2.3 and can not generate relative sliding displacement. The balance wheel axle 4.2.3 is fixedly connected with the turnover track 11.4 through a balance wheel axle pin hole 4.2.8 and a positioning pin 4.2.7, and the turnover track 11.4 is fixed on the circulating trolley 4, so that the circulating trolley 4 can rotate but can not slide relatively when moving synchronously with the balance wheel chain track 11.2.
The two balance wheel axle pin holes 4.2.8 are vertically and crossly arranged on the end face, close to the overturning track 11.4, of the balance wheel axle 4.2.3 in the horizontal direction and the vertical direction, and when the opening of the circulating trolley 4 runs upwards stably, the positioning pin 4.2.7 is arranged in the balance wheel axle pin hole 4.2.8 in the vertical direction of the balance wheel axle 4.2.3 to position the balance wheel 4.2.1 on the overturning track 11.4.
As shown in fig. 7, the electro-hydraulic push rod 4.9 disposed on the circulating trolley 4 includes a motor 4.9.1 and a piston rod 4.9.2, the motor 4.9.1 provides power to the piston rod 4.9.2, and the piston rod 4.9.2 is connected to the positioning pin 4.2.7. When the circulating trolley 4 starts to unload materials, the motor 4.9.1 drives the piston rod 4.9.2 to pull out the positioning pin 4.2.7 from the balance wheel axle pin hole 4.2.8, the balance wheel device 4.2 can move along the overturning track 11.4, when the materials are unloaded, the circulating trolley 4 resets and restores the state with the upward opening, the motor 4.9.1 rotates reversely to drive the piston rod 4.9.2 to rotate the positioning pin 4.2.7 into the balance wheel axle pin hole 4.2.8 in the vertical direction of the balance wheel axle 4.2.3 again, so that the balance wheel 4.2.1 resets and is fixed.
As shown in fig. 2 and 3, the sealing device 4.3 is arranged at the upper end of the side wall of the circulation trolley 4, when the circulation trolley 4 runs in the cylinder device 3, the sealing device 4.3 is tightly attached to the wall surface of the cylinder device 3, so that the sealing and environmental protection effects are achieved, cooling air blown out by the air supply device 5 enters the circulation trolley 4 from the bottom plate and the side wall of the circulation trolley 4, passes through the high-temperature sintered mineral aggregate and is blown out from the top opening of the circulation trolley 4, the utilization rate of the cooling air is improved, and the cooling performance is ensured.
The trolley framework 4.6 is a bottom framework of the circulating trolley 4, the framework upright column 4.8 is a side wall framework of the circulating trolley 4, the framework upright column 4.8 is installed on the trolley framework 4.6, as shown in figure 8, the grid plate 4.4 has air permeability and is arranged on the periphery of the whole circulating trolley 4 to form a bottom plate and a side wall of the circulating trolley 4, and the grid plate 4.4 is a louver structure commonly used in engineering and can reduce the leakage of sintered mineral aggregate. When the circulating trolley 4 unloads in the unloading area 8, the slag blockage phenomenon of the circulating trolley 4 during overturning and unloading can be reduced, and meanwhile, the air holes formed in the grid plate 4.4 can accelerate the cooling of high-temperature sinter.
Two sets of track devices 11 are respectively arranged on the inner walls of two sides of the cooling system in a surrounding manner, as shown in fig. 3 and 9, the track devices 11 further comprise caterpillar driving wheels 11.3, wheel caterpillar supporting wheels 11.5, trolley resetting wheels 11.6 and balance wheel caterpillar supporting wheels 11.7.
The wheel caterpillar track 11.1 and the balance wheel caterpillar track 11.2 are arranged on the inner wall of the cooling system in parallel through a wheel caterpillar track supporting wheel 11.5 and a balance wheel caterpillar track supporting wheel 11.7 respectively, the arrangement positions of the wheel caterpillar track supporting wheel and the balance wheel caterpillar track supporting wheel are matched with the positions of the wheel 4.1.1 and the balance wheel 4.2.1 on the circulating trolley 4, in the moving process of the wheel caterpillar track 11.1 and the balance wheel caterpillar track 11.2, the wheel caterpillar track supporting wheel 11.5 and the balance wheel caterpillar track supporting wheel 11.7 respectively roll in the wheel caterpillar track 11.1 and the balance wheel caterpillar track 11.2, the circulating trolley 4 is supported through the wheel caterpillar track 11.1 and the balance wheel caterpillar track 11.2, and the wheel 4.1.1 and the balance wheel 4.2.1 respectively move along with the wheel caterpillar track 11.1 and the balance wheel caterpillar track 11.2 in a guiding mode. The caterpillar driving wheels 11.3 are disposed at preset positions on the inner wall of the cooling system, and one or more caterpillar driving wheels may be disposed, for example, 4 caterpillar driving wheels 11.3 are respectively disposed at four turning positions as shown in fig. 9 in this embodiment, and the caterpillar driving wheels 11.3 are driven in the same direction to drive the wheel caterpillar 11.1 to rotate circularly, in this embodiment, the rotating direction is clockwise. The wheel chain track 11.1 is supported by the wheel chain track supporting wheel 11.5 and driven by the chain track driving wheel 11.3, and then the circulating trolley 4 is driven to do circulating reciprocating motion through the wheel device 4.1, so that the motion state of the circulating trolley 4 can be controlled by controlling the motion state of the chain track driving wheel 11.3, the balance wheel 4.2.1 is guided by the balance wheel chain track 11.2, and the balance wheel chain track 11.2 guides the balance wheel 4.2.1 and tensions the circulating trolley 4.
The overturning track 11.4 is arranged on the side wall of the circulating trolley 4 through a balance wheel support plate 4.5 and a wheel support plate 4.7, as shown in fig. 3, the overturning track 11.4 is of an arc-shaped structure bent towards the right side, the overturning track 11.4 is connected with a balance wheel axle 4.2.3 through a positioning pin 4.2.7, after the positioning pin 4.2.7 is pulled out, the balance wheel device 4.2 can slide along the overturning track 11.4, and due to the fact that the gravity center of the circulating trolley 4 is offset to one side, the gravity action causes the circulating trolley 4 to overturn and unload. The two ends of the overturning track 11.4 are also provided with limit stops 11.4.1, the limit stops 11.4.1 can prevent the balance wheel 4.2.1 from being separated from the overturning track 11.4, a pair of photoelectric sensors are further arranged at preset positions of the overturning track 11.4, and the axes of the sensor transmitting end 11.4.2 and the sensor receiving end 11.4.3 of the photoelectric sensors and the axis of the balance wheel axle pin hole 4.2.8 in the horizontal direction on the balance wheel axle 4.2.3 are at the same horizontal position. The photoelectric sensor judges whether the circulating trolley 4 is reset or not by sensing whether the wheel axle pin hole 4.2.8 of the balance wheel in the horizontal direction is in the horizontal state or not.
Reset wheel 11.6 sets up on circulation platform truck 4 is about to go out 8 positions of unloading department top lateral walls, with circulation platform truck 4 under the tilt state high looks adaptations, reset wheel 11.6 through pushing down circulation platform truck 4, makes the circulation platform truck 4 that finishes of unloading reset. After the circulation trolley 4 finishes discharging, the body of the circulation trolley 4 is in an inclined state, and the tail of the circulation trolley 4 rotates downwards (in the embodiment, the circulation trolley 4 rotates clockwise) by a certain angle under the action of the return wheel 11.6, so that the upward opening state of the circulation trolley 4 is gradually recovered.
When the circulating trolley 4 enters the discharging area 8 to prepare for discharging, the balance wheel 4.2.1 guides the circulating trolley 4 along the overturning track 11.4, and the limit stop 11.4.1 arranged at the two ends of the overturning track 11.4 prevents the balance wheel 4.2.1 from being separated from the overturning track 11.4, and the circulating trolley 4 deflects leftwards to discharge under the action of eccentric force because the wheels 4.1.1 and the balance wheel 4.2.1 are arranged in a staggered manner. When the discharging is finished, the circulating trolley 4 moves to the position of the reset wheel 11.6, and the reset wheel 11.6 presses down the circulating trolley 4 to enable the circulating trolley 4 to be reset gradually.
When the sensor receiving end 11.4.3 receives a signal sent by the photoelectric sensor from the sensor transmitting end 11.4.2, the motor 4.9.1 screws the positioning pin 4.2.7 into the balance wheel axle pin hole 4.2.8 in the vertical direction of the balance wheel axle 4.2.3 through the piston rod 4.9.2 to complete the positioning of the balance wheel 4.2.1, and at this time, the circulation trolley 4 is reset to be finished and the opening is restored to the upward state.
If a plurality of circulation trolleys 4 are arranged in the cooling system for periodic circulation operation, the continuous cooling of the high-temperature sintering mineral aggregate by the cooler can be ensured. The plurality of circulating trolleys 4 can be interconnected and can also independently run, the circulating trolleys are used as core components for conveying high-temperature sintering mineral aggregate by the cooler and need to be kept in a stable state in the running process, and besides the discharging, the opening of each circulating trolley needs to be kept upward, and whether the running state of each circulating trolley is good or not is related to the cooling performance of the whole cooler. When the circulation cart 4 runs to the dry run zone 10, it can be subjected to routine maintenance and overhaul.
In order to realize the operation of the circulating trolley 4, the control mode of the track device is as follows: the cooling machine can be manually controlled according to the actual operation condition of the cooling machine; or according to the operating condition parameters of the cooling machine, using a corresponding industrial control program to perform semi-automatic control or automatic control on the cooling machine; or a sensor is arranged at a proper position of the cooling machine, and intelligent real-time online control is carried out on the cooling machine according to information fed back by the sensor.
This embodiment is through the three-dimensional cyclic reciprocating motion of circulation platform truck 4, change sintering deposit and cooling air's exchange mode, the heat transfer effect has obviously been promoted, sintering mineral aggregate is put in a plurality of circulation platform trucks 4 in the cooling zone simultaneously, sintering mineral aggregate cooling height has effectively been reduced, compare existing vertical cooler, avoided piling up too high the arousing because of sintering mineral aggregate, the inhomogeneous problem of cooling, thereby cooling wind pressure has been reduced, red ore deposit that the bed of material gas permeability worsen appears has been avoided, the production of "ineffective wind" has also been reduced.
While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details of the embodiments are not to be interpreted as limiting the scope of the invention, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the invention, can be interpreted without departing from the spirit and scope of the invention.
Claims (9)
1. A vertical circulation cooler with a circulation trolley, characterized in that the cooler has a closed-circulation cooling system, which comprises a circulation trolley (4) and a rail device (11);
the top of the circulating trolley (4) is provided with an opening and comprises wheel devices (4.1) and balance wheel devices (4.2), and the two groups of wheel devices (4.1) and the balance wheel devices (4.2) which are arranged in a vertically staggered mode are symmetrically fixed on the left side wall and the right side wall of the circulating trolley (4) respectively;
the two groups of track devices (11) are respectively arranged on the inner walls of the two sides of the cooling system in a surrounding mode, and each track device (11) comprises a wheel caterpillar track (11.1), a balance wheel caterpillar track (11.2) and a turnover track (11.4); the wheel chain track (11.1) and the balance wheel chain track (11.2) are arranged on the inner wall of the cooling system in parallel, and the arrangement positions of the wheel chain track and the balance wheel chain track are matched with the positions of the wheel device (4.1) and the balance wheel device (4.2); the overturning track (11.4) is arranged on the side wall of the circulating trolley (4);
the wheel caterpillar track (11.1) drives the circulating trolley (4) to circularly and repeatedly convey high-temperature sintered mineral aggregate in the cooling system for cooling through the wheel device (4.1); the balance wheel caterpillar track (11.2) is guided and tensed on the circulating trolley (4) through the balance wheel device (4.2); the balance wheel device (4.2) is connected with the overturning track (11.4), and the balance wheel device (4.2) moves along the overturning track (11.4) in a guiding way during unloading so as to enable the circulating trolley (4) to overturn and unload materials;
the balance wheel device (4.2) comprises a balance wheel (4.2.1), a balance wheel axle (4.2.3), a balance wheel bearing (4.2.5), a positioning pin (4.2.7) and a balance wheel axle pin hole (4.2.8); the balance wheel (4.2.1) is fixed on the balance wheel axle (4.2.3) through the balance wheel bearing (4.2.5), the balance wheel (4.2.1) is connected with the balance wheel caterpillar track (11.2), two balance wheel axle pin holes (4.2.8) are vertically and crosswise arranged on the end face of the balance wheel axle (4.2.3) in the horizontal direction and the vertical direction, and the positioning pin (4.2.7) can position the balance wheel axle (4.2.3) on the overturning track (11.4) through the balance wheel axle pin holes (4.2.8) in the vertical direction.
2. The vertical circulation cooler with circulation trolley according to claim 1, characterized in that limit stops (11.4.1) are provided at both ends of the turning rail (11.4).
3. The vertical circulation cooler with circulation trolley according to claim 1, characterized in that the circulation trolley (4) further comprises an electro-hydraulic push rod (4.9), the electro-hydraulic push rod (4.9) comprises a motor (4.9.1) and a piston rod (4.9.2), the motor (4.9.1) powers the piston rod (4.9.2), and the piston rod (4.9.2) is connected with the positioning pin (4.2.7); under the drive of the motor (4.9.1), the piston rod (4.9.2) pulls out the positioning pin (4.2.7) from the balance wheel axle pin hole (4.2.8) or enters the balance wheel axle pin hole (4.2.8).
4. The vertical type circulation cooling machine with the circulation trolley according to claim 1, wherein a pair of photoelectric sensors are arranged on preset positions of the overturning track (11.4), the axes of the sensor emitting end (11.4.2) and the sensor receiving end (11.4.3) of the photoelectric sensors and the axis of the balance wheel axle pin hole (4.2.8) in the horizontal direction on the balance wheel axle (4.2.3) are in the same horizontal position, and the photoelectric sensors judge whether the circulation trolley (4) is reset or not by sensing whether the balance wheel axle pin hole (4.2.8) in the horizontal direction is in the horizontal state or not.
5. The vertical circulation cooler with circulation trolley according to claim 1, characterized in that the balance wheel means (4.2) further comprises a balance wheel support arm (4.2.2), a balance wheel stud (4.2.4) and a balance wheel end cap (4.2.6); two ends of the balance wheel pin (4.2.4) are respectively positioned and arranged on gear teeth on two sides of the balance wheel (4.2.1), the balance wheel (4.2.1) is positioned on the balance wheel supporting arm (4.2.2) through the balance wheel pin (4.2.4), and the balance wheel supporting arm (4.2.2) is fixed on the balance wheel chain rail (11.2); the balance wheel (4.2.1) is axially positioned on the balance wheel axle (4.2.3) by the balance wheel end cover (4.2.6).
6. The vertical circulation cooler with circulation trolley according to claim 1, characterized in that the track device (11) further comprises a caterpillar driving wheel (11.3), the caterpillar driving wheel (11.3) is arranged at a preset position on the inner wall of the cooling system, and the caterpillar driving wheel (11.3) drives the wheel caterpillar (11.1) to circulate.
7. The vertical circulation cooling machine with circulation trolley according to claim 6, characterized in that the track device (11) further comprises a wheel track support wheel (11.5) and a balance wheel track support wheel (11.7), the wheel track (11.1) and the balance wheel track (11.2) are respectively arranged on the inner wall of the cooling system in parallel through the wheel track support wheel (11.5) and the balance wheel track support wheel (11.7) at positions matched with the positions of the wheel device (4.1) and the balance wheel device (4.2), and the wheel track (11.1) and the balance wheel track (11.2) respectively drive the wheel track support wheel (11.5) and the balance wheel track support wheel (11.7) to roll.
8. The vertical circulation cooler with circulation trolley according to claim 1 or 7, characterized in that the track device (11) further comprises a trolley reset wheel (11.6), the reset wheel (11.6) is arranged on the side wall above the position where the circulation trolley (4) is about to go out of the unloading position and is matched with the circulation trolley (4) in height in an inclined state, and the reset wheel (11.6) enables the unloaded circulation trolley (4) to reset by pressing down the circulation trolley (4).
9. The vertical circulation cooler with circulation trolley according to claim 1, characterized in that the wheel arrangement (4.1) comprises a wheel (4.1.1), a wheel support arm (4.1.2), a wheel axle (4.1.3), a wheel stud (4.1.4), a wheel bearing (4.1.5) and a wheel end cap (4.1.6);
the two ends of the wheel pin (4.1.4) are respectively positioned on the gear teeth on the two sides of the wheel (4.1.1), and the wheel pin (4.1.4) positions the wheel (4.1.1) on the wheel caterpillar track (11.1) through the wheel supporting arm (4.1.2); the wheel (4.1.1) is connected to the wheel axle (4.1.3) via the wheel bearing (4.1.5) and is axially positioned on the wheel axle (4.1.3) via the wheel end cap (4.1.6), the wheel axle (4.1.3) being fixed to a side wall of the circulating carriage (4).
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| CN201811215842.3A CN109373768B (en) | 2018-10-18 | 2018-10-18 | Vertical type circulating cooling machine with circulating trolley |
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| CN201811215842.3A CN109373768B (en) | 2018-10-18 | 2018-10-18 | Vertical type circulating cooling machine with circulating trolley |
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| CN109373768B true CN109373768B (en) | 2020-01-10 |
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| WO2012007277A1 (en) * | 2010-07-13 | 2012-01-19 | Siemens Vai Metals Technologies Gmbh | Cooling device for hot bulk material |
| CN103983111A (en) * | 2013-02-07 | 2014-08-13 | 山东省冶金设计院股份有限公司 | Annular sintering machine for water seal |
| CN106595327A (en) * | 2017-01-10 | 2017-04-26 | 中钢集团鞍山热能研究院有限公司 | Linkage type sintered ore waste heat recovery and comprehensive utilization process and system |
| CN107966034A (en) * | 2017-11-20 | 2018-04-27 | 湖南大学 | A kind of vertical circulation cooler and cooling means |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7968044B2 (en) * | 2007-04-30 | 2011-06-28 | Spraying Systems Co. | Sinter processing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012007277A1 (en) * | 2010-07-13 | 2012-01-19 | Siemens Vai Metals Technologies Gmbh | Cooling device for hot bulk material |
| CN103983111A (en) * | 2013-02-07 | 2014-08-13 | 山东省冶金设计院股份有限公司 | Annular sintering machine for water seal |
| CN106595327A (en) * | 2017-01-10 | 2017-04-26 | 中钢集团鞍山热能研究院有限公司 | Linkage type sintered ore waste heat recovery and comprehensive utilization process and system |
| CN107966034A (en) * | 2017-11-20 | 2018-04-27 | 湖南大学 | A kind of vertical circulation cooler and cooling means |
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