CN213300870U - Rotary sinter cooling device - Google Patents

Rotary sinter cooling device Download PDF

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Publication number
CN213300870U
CN213300870U CN202021433179.7U CN202021433179U CN213300870U CN 213300870 U CN213300870 U CN 213300870U CN 202021433179 U CN202021433179 U CN 202021433179U CN 213300870 U CN213300870 U CN 213300870U
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CN
China
Prior art keywords
dust
sinter
air
rotary
cooling device
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Expired - Fee Related
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CN202021433179.7U
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Chinese (zh)
Inventor
苗慧源
牛宏伟
隋孝利
董海亮
谢静
崔科科
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HBIS Co Ltd Chengde Branch
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HBIS Co Ltd Chengde Branch
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Priority to CN202021433179.7U priority Critical patent/CN213300870U/en
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Abstract

The utility model provides a formula sinter cooling device circles round belongs to sintering production facility technical field, including the cold air duct, venturi, dust falling case and dust removal mechanism, the cold quick-witted top of ring is vertically located to the cold air duct, be used for the orientation to arrange the sinter on the cold machine of ring in and blow, venturi locates in the cold air duct, be used for carrying the formula of circling round and flow to the sinter, the cold machine below of ring is located to the dust falling case, be used for accepting and hold the impurity that the sinter dropped on the cold machine of ring, dust removal mechanism locates cold machine one side of ring, communicate with the dust falling case, be used for extracting dust and the air of dust falling incasement. The utility model provides a formula sinter cooling device revolves has realized the even cooling of rotation cooling sinter, has reduced the internal stress that the lower part has the cooling inhomogeneously to cause on the sinter, has improved the cooling effect of sinter and the technological effect of intensity.

Description

Rotary sinter cooling device
Technical Field
The utility model belongs to the technical field of sintering production facility, more specifically say, relate to a formula sinter cooling device revolves.
Background
Generally, the temperature of the sintered ore naturally falling from the tail trolley of the sintering machine is as high as 700-. Therefore, by automatic breaking, the block size is not uniform, and part of the large blocks exceed 200mm and even reach 300-500 mm. Unfired mineral powder or raw materials are also mixed in the large blocks, which can not meet the requirements of blast furnace smelting and bring about a lot of problems for storage and transportation of sintered ores. Therefore, the sinter unloaded from the tail of the machine needs to be cooled, the sinter is convenient to complete granules after being cooled, the lumpiness of finished products produced from the machine is uniform, the blast furnace smelting can be enhanced, the coke ratio is reduced, and the pig iron yield is increased.
The sintered ore forms vitreous in the forced cooling process, generates larger internal stress and microcracks, and influences the strength to a certain extent, so that the return ore rate is increased; secondly, the sintering machine has low operation rate and productivity under the condition of producing cold ore, high operating cost and huge cooling equipment.
When the sinter is cooled, whether the cooling method is proper or not is selected, the influence on the sinter is large, and the proper cooling method is selected to ensure that: 1) the quality (mainly strength) of the sinter is little or not influenced, and the pulverization phenomenon is reduced as much as possible; 2) the cooling efficiency is high, so that the expected cooling effect can be achieved in a short time; 3) is economically reasonable. In general, the cooling method of the sintered ore includes water cooling, natural ventilation cooling and forced ventilation cooling. The water cooling has the advantages of high cooling strength, high efficiency and low cost, but the strength is greatly reduced due to the rapid cooling, and the condition of pulverization is more serious particularly for fluxed sinter when meeting water, and the sieving is difficult to carry out. The natural ventilation cooling efficiency is low, the cooling time is long, the occupied area is large, and the environmental conditions are severe. Therefore, forced air cooling is currently widely used.
Forced draft cooling mainly cools off through the mode of air-blower blast or convulsions, owing to only adopt the mode of straight face blowing to cool off at the refrigerated in-process, caused and produced the temperature difference at the sintering deposit leeward side and windward side, it is inhomogeneous to cool off, just so produced intrinsic thermal stress, cause the sintering deposit cracked, the powder increases and the return fines rate of sintering deposit increases, how to improve the mode of blowing, with the intrinsic thermal stress of reduction sintering deposit, improve the granularity and the granularity composition of sintering deposit and just become in order to wait for the problem of solving urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a formula of circling round sinter cooling device aims at solving and has the inhomogeneous technical problem of cooling among the cold machine's of ring sinter cooling process.
In order to achieve the above object, the utility model adopts the following technical scheme: the rotary type sinter cooling device comprises a cold air pipeline, a Venturi tube, a dust falling box and a dust removing mechanism, wherein the cold air pipeline is vertically arranged above the circular cooler, one end of the cold air pipeline is communicated with an air outlet of an air blower on the circular cooler, and the other end of the cold air pipeline is used for blowing air towards sinter arranged on the circular cooler; the Venturi tube is vertically arranged in the cold air pipeline, and the air input into the cold air pipeline is used for conveying rotary air flow to the sintering ore after passing through the Venturi tube; the dust falling box is arranged below the circular cooler, is vertically aligned with the cold air pipeline and is used for receiving and containing impurities falling from the sintered ore on the circular cooler; the dust removal mechanism is arranged on one side of the circular cooler, is communicated with the dust fall box and is used for extracting dust and air in the dust fall box.
As another embodiment of this application, rotary sinter cooling device still include with dust removal mechanism electric connection's control mechanism, control mechanism is used for controlling dust removal mechanism moves.
As another embodiment of this application, be equipped with the frame on the cold machine of ring, the cold platform truck of ring that the cold machine of ring goes up the transport sintering deposit is followed in the rotation process pass in the frame, the cold wind pipeline with the dust fall case respectively with the connection can be dismantled to the frame.
As another embodiment of the present application, the venturi tube includes an inlet section, a straight section and an outlet section, the inlet section is close to the air inlet of the cold air duct, and the inlet section is in an inverted circular truncated cone shape; the straight line section is fixedly arranged at the lower end of the inlet section and is cylindrical; the outlet section is in a circular truncated cone shape and is fixedly arranged at the lower end of the straight line section, the caliber of the lower end of the outlet section is the same as that of the upper end of the inlet section, and the inlet section, the straight line section and the outlet section are coaxially arranged.
As another embodiment of the application, an included angle between the side edge of the inlet section and the side portion of the straight line section is 28-33 degrees, an included angle between the side edge of the outlet section and the side portion of the straight line section is 10-15 degrees, and the height of the straight line section is 1.9-2.1 m.
As another embodiment of the application, the bottom end of the dust falling box is provided with an ash discharging valve for discharging impurities in the dust falling box.
As another embodiment of this application, fall the inside filter screen that is equipped with of dirt case, the filter screen is used for filtering the impurity of the different particle diameters that the sintering deposit dropped.
As another embodiment of the application, a rotary air flow output by the Venturi tube in the cold air pipeline forms a rotary area for cooling the sintering ore, and the height of the rotary area is set to be 3-4 m.
As another embodiment of the present application, the dust removing mechanism includes an air box, a dust remover, and an evacuation channel, one end of the air box is communicated with the dust falling box for conveying the dust and air; the dust remover is communicated with the other end of the air box and is used for extracting dust and air in the dust falling box and purifying the air; and the exhaust passage is communicated with the air outlet end of the dust remover and is used for discharging purified air.
As another embodiment of this application, venturi is a plurality ofly, all follows the setting of circumferential direction in the cold air duct is a plurality of venturi is detachable connection each other.
The utility model provides a formula of circling round sinter cooling device's beneficial effect lies in: compared with the prior art, the utility model discloses convolution formula sinter cooling device, the wind that blows off with the air-blower of cold machine of ring passes through the cold air duct, a sinter on to the cold machine of ring is bloied, cold wind is when passing through venturi, blow to the sinter by the straight face and become convolution formula wind current and blow to the sinter, can be to the omnidirectional cooling of sinter, impurity can be collected to the dust fall case, dust removal mechanism can extract the dust, there is the inhomogeneous technical problem of cooling in the sinter cooling process of having solved the cold machine of ring, the even cooling of rotation cooling sinter has been realized, the internal stress that the lower part has the inhomogeneous to cause of cooling has been reduced on the sinter, the cooling effect of sinter and the technological effect of intensity have been improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a rotary sinter cooling device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a layout plan view of the rotary sinter cooling device provided in the embodiment of the present invention, which is disposed on the circular cooler;
fig. 4 is a venturi tube elevation of the rotary sinter cooling device according to the embodiment of the present invention.
In the figure: 1. a cold air duct; 2. a venturi tube; 21. an inlet section; 22. a straight line segment; 23. an outlet section; 3. a dust falling box; 4. a dust removal mechanism; 41. an air box; 42. a dust remover; 43. an evacuation channel; 5. a control mechanism; 6. a frame; 7. an ash discharge valve; 8. and (4) a filter screen.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, a rotary sinter cooler according to the present invention will be described. The rotary type sinter cooling device comprises a cold air pipeline 1, a Venturi tube 2, a dust settling box 3 and a dust removal mechanism 4, wherein the cold air pipeline 1 is vertically arranged above the circular cooler, one end of the cold air pipeline is communicated with an air outlet of an air blower on the circular cooler, and the other end of the cold air pipeline is used for blowing air towards sinter arranged on the circular cooler; the Venturi tube 2 is vertically arranged in the cold air pipeline 1, and the air input into the cold air pipeline 1 is used for conveying rotary air flow to the sinter after passing through the Venturi tube 2; the dust falling box 3 is arranged below the circular cooler and is vertically aligned with the cold air pipeline 1 and is used for receiving and containing impurities falling from the sintered ore on the circular cooler; the dust removal mechanism 4 is arranged on one side of the circular cooler, is communicated with the dust fall box 3 and is used for extracting dust and air in the dust fall box 3.
The utility model provides a formula sinter cooling device revolves, compared with the prior art, the wind that blows off with the air-blower of the cold machine of ring passes through cold air duct 1, a sinter on to the cold machine of ring is bloied, when cold wind passes through venturi 2, become the formula wind stream of revolving and blow to the sinter by blowing straight, can be to the omnidirectional cooling of sinter, dust fall case 3 can collect impurity, dust removal mechanism 4 can extract the dust, there is the inhomogeneous technical problem of cooling in the sinter cooling process of having solved the cold machine of ring, the even cooling of rotation cooling sinter has been realized, the internal stress that the lower part has the inhomogeneous cause of cooling on the sinter has been reduced, the cooling effect of sinter and the technological effect of intensity have been improved.
The principle of the venturi effect is that when wind blows over an obstacle, the air pressure is relatively low near the port above the lee side of the obstacle, creating an adsorption effect and causing a flow of air, and when gas or liquid flows inside the venturi tube 2, at the narrowest point of the pipe, the dynamic pressure (velocity head) reaches a maximum and the static pressure (resting pressure) reaches a minimum. The velocity of the gas (liquid) rises due to the change of the cross-sectional area of the surge, and the whole surge is subjected to the pipeline shrinking process at the same time, so that the pressure is reduced at the same time, and the pressure difference is generated. In general terms, this effect is the creation of a low pressure in the vicinity of a high velocity fluid flow, thereby creating an adsorption effect by which a venturi can be created. The utility model changes the direction of wind through the venturi tube to form the cyclone to improve the cooling effect of the sinter.
Generally, all be provided with the air-blower on the cold machine of ring, the air-blower is through the forced cooling's mode to carry out refrigerated air blowing equipment to the sinter, through in collecting cold air duct 1 with the wind that the air-blower blew out, the effect of rethread venturi 2 can make the air current of output be the formula of circling round, compares in directly blowing into formula, can carry out omnidirectional cooling to the sinter like this by furthest, improves cooling speed and efficiency.
As a specific embodiment of the rotary sinter cooling device provided by the present invention, please refer to fig. 1, the rotary sinter cooling device further includes a control mechanism 5 electrically connected to the dust removing mechanism 4, and the control mechanism 5 is used for controlling the operation of the dust removing mechanism 4. The control means 5 controls the operation of the dust removing means 4, and it is possible to control when the dust removing means 4 is activated to remove dust, the frequency of activation, the operation time, and the like. The dust removing mechanism 4 is simply connected with the control mechanism 5.
Specifically, the control mechanism 5 includes a PLC controller, a timer, and a control switch, the control switch is electrically connected to the dust removing mechanism 4, and the control switch controls the start or stop of the dust removing mechanism 4, and may also set a timing mode for operating the dust removing mechanism 4 at a timing, setting a frequency for removing dust, and the like.
As a specific implementation manner of the rotary sinter cooling device provided by the utility model, please refer to fig. 1, the ring cooling machine is provided with a frame 6, the ring cooling trolley for conveying the sinter on the ring cooling machine passes through the frame 6 in the rotation process, and the cold air pipeline 1 and the dust settling box 3 are respectively connected with the frame 6 in a detachable manner. Generally all be through ring cold platform truck drive sintering deposit circumferential direction on the cold machine of ring the utility model discloses in, frame 6 is on arranging the cold machine of ring in, and with ring cold platform truck contactless, can not influence the circumferential direction of sintering deposit yet, and the purpose that sets up frame 6 is all fixed the cold machine of ring with cold wind pipe 1 and dust fall case 3 on, is convenient for carry out forced cooling to the sintering deposit like this.
Specifically, frame 6 is door style of calligraphy, locates on the cold machine of ring, and ring cold platform truck and agglomerate pass from the inner loop of frame 6, through a plurality of frames 6 of circumference installation on the cold machine of ring like this to install on each frame 6 the utility model discloses, can carry out forced cooling to the agglomerate on the cold platform truck of ring, add cooling time and speed, can not exert an influence to the sinter mineral volume in addition.
As a specific embodiment of the rotary sinter cooling device provided by the present invention, please refer to fig. 1 and 4, the venturi tube 2 includes an inlet section 21, a straight section 22 and an outlet section 23, the inlet section 21 is close to the air inlet of the cold air duct 1, and the inlet section 21 is in an inverted truncated cone shape; the straight line section 22 is fixedly arranged at the lower end of the inlet section 21, and the straight line section 22 is cylindrical; the outlet section 23 is in a shape of a circular truncated cone and is fixedly arranged at the lower end of the straight section 22, the caliber of the lower end of the outlet section is the same as that of the upper end of the inlet section 21, and the inlet section 21, the straight section 22 and the outlet section 23 are coaxially arranged.
Referring to fig. 1 and 4, an included angle between a side of the inlet section 21 and a side of the straight section 22 is 28 to 33 °, which is an angle a in fig. 4; the included angle between the outlet section 23 and the side part of the straight section 22 is 10-15 degrees, namely the angle b in fig. 4; the height of the straight line segment 22 is 1.9-2.1 m.
As a specific implementation manner of the rotary sinter cooling device provided by the utility model, please refer to fig. 1, the bottom of the dust falling box 3 is provided with the dust discharging valve 7 for discharging the impurities in the dust falling box 3, and the dust discharging valve 7 is opened to discharge the impurities in the dust falling box 3, so as to ensure the normal use of the dust falling box 3.
As a specific embodiment of the utility model provides a formula of circling round sinter cooling device please refer to fig. 1, and dust fall 3 inside are equipped with filter screen 8, and filter screen 8 is used for filtering the impurity of the different particle diameters that the sinter dropped. The sintering deposit is cooled off the back, generally all can follow the impurity of the different particle diameters that drops from the sintering deposit, through setting up filter screen 8, is provided with the filtration pore on filter screen 8, and impurity falls into dust fall case 3 in through this filtration pore, then the impurity of great particle diameter just is by the separation of filter screen 8, just so can obtain the impurity of two kinds of different grade types (particle diameters), also is convenient for the later stage to impurity collection and clearance.
Specifically, the form of filter screen 8 and the inside shape looks adaptation of dust removal case, can the overlap joint in the inside of dust removal case and can dismantle.
As a specific embodiment of the rotary type cooling device for sintering ore provided by the present invention, please refer to fig. 1, the rotary type air flow outputted from the venturi 2 in the cold air duct 1 forms a convolution area for cooling the sintering ore, and the height of the convolution area is set at 3-4 m. According to actual conditions and research verification, air output by the Venturi tube 2 is in a rotary air flow, and the height of the rotary air flow is 3-4m, so that sintering ore below the Venturi tube 2 can be cooled in all directions, the upper part and the lower part of the sintering ore can be cooled, the temperature of the upper part and the lower part is uniform, and the cooling time and the cooling speed of the sintering ore can be prolonged.
As a specific embodiment of the rotary sinter cooling device provided by the present invention, please refer to fig. 1, the dust removing mechanism 4 includes an air box 41, a dust remover 42 and an emptying channel 43, one end of the air box 41 is communicated with the dust settling box 3 for conveying the raised dust and air; the dust remover 42 is communicated with the other end of the air box 41 and is used for extracting dust and air in the dust falling box 3 and purifying the air; the exhaust duct is communicated with an air outlet end of the dust remover 42, and is used for discharging purified air. The dust and the polluted air in the dust settling tank 3 are purified by the dust remover 42, and the clean air meeting the atmospheric emission standard is discharged and discharged through the discharge passage 43. In addition, the dust remover 42 is electrically connected with the control mechanism 5, and the control mechanism 5 is provided with a control module for controlling the operation of the dust remover 42, so that the control can be realized through the control mechanism 5 without manually controlling the actions of starting or stopping the dust remover 42, and the operation is convenient.
Specifically, the dust remover 42 adopts an XKD280X3/2 electric dust remover 42.
As a specific embodiment of the rotary sinter cooling device provided by the present invention, please refer to fig. 1 to 3, venturi 2 is plural, all along the setting of the circumferential direction in the cold air duct 1, and plural venturi 2 are detachable connections each other. The gaps between the plurality of venturi tubes 2 may be filled with a sealing material such as a caulking agent, which may increase the amount of swirl of the wind flow, thereby allowing the wind flow to pass through the venturi tubes 2 entirely. In addition, the gap between the venturi tube 2 and the inner wall of the cooling pipe may be sealed with a sealing material.
Specifically, the cooling air duct adopts 20mm steel sheet welding to be 2000 mm's diameter drum, and venturi 2 is 7, so form the venturi in 7 holes after the intercombination, and the venturi adopts 7 hole overall arrangements, and 3 holes are arranged to the centre, and 2 holes are arranged to both sides, and venturi 2 evenly arranges in cold air duct 1, and cold air duct 1 is a plurality ofly, and the equipartition is put on cold machine upper portion of ring.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Rotary sinter cooling device, its characterized in that includes:
the cold air pipeline is vertically arranged above the circular cooler, one end of the cold air pipeline is communicated with an air outlet of the air blower on the circular cooler, and the other end of the cold air pipeline is used for blowing air towards the sintered ore on the circular cooler;
the Venturi tube is vertically arranged in the cold air pipeline, and the air input into the cold air pipeline is used for conveying rotary air flow to the sintering ore after passing through the Venturi tube;
the dust falling box is arranged below the circular cooler, is vertically aligned with the cold air pipeline, and is used for receiving and containing impurities falling from the sintered ore on the circular cooler; and
and the dust removal mechanism is arranged on one side of the circular cooler, is communicated with the dust fall box and is used for extracting dust and air in the dust fall box.
2. The rotary sinter cooling device of claim 1, further comprising a control mechanism electrically connected to the dust removal mechanism, wherein the control mechanism is configured to control the operation of the dust removal mechanism.
3. The rotary type sinter cooling device as claimed in claim 1, wherein a frame is provided on the ring cooling machine, a ring cooling trolley for conveying the sinter on the ring cooling machine passes through the frame during rotation, and the cold air duct and the dust settling tank are detachably connected to the frame respectively.
4. The rotary sinter cooling device of claim 1, wherein the venturi comprises:
the inlet section is close to the air inlet of the cold air pipeline and is in an inverted frustum shape;
the straight line section is fixedly arranged at the lower end of the inlet section and is cylindrical; and
the outlet section is in a circular truncated cone shape and fixedly arranged at the lower end of the straight line section, the caliber of the lower end of the outlet section is the same as that of the upper end of the inlet section, and the inlet section, the straight line section and the outlet section are coaxially arranged.
5. The rotary sinter cooling device of claim 4, wherein an angle between a side of the inlet section and a side of the straight section is 28-33 °, an angle between the outlet section and the side of the straight section is 10-15 °, and the height of the straight section is 1.9-2.1 m.
6. The rotary sinter cooling device of claim 1, wherein a dust discharge valve is provided at a bottom end of the dust dropping box to discharge impurities in the dust dropping box.
7. The rotary sinter cooling device of claim 1, wherein a filter screen is disposed inside the dust-settling tank, and the filter screen is used for filtering impurities with different particle sizes falling from the sinter.
8. The rotary sinter cooling device of claim 1, wherein the rotary air flow output from the venturi tube in the cooling air duct forms a rotary area for cooling the sinter, and the height of the rotary area is set to 3-4 m.
9. The rotary sinter cooling device of claim 1, wherein the dust removal mechanism comprises:
one end of the air box is communicated with the dust falling box and is used for conveying raised dust and air;
the dust remover is communicated with the other end of the air box and is used for extracting dust and air in the dust falling box and purifying the air; and
and the exhaust passage is communicated with the air outlet end of the dust remover and is used for exhausting the purified air.
10. The rotary sinter cooling device as claimed in claim 1, wherein the number of the venturi tubes is plural, and the plural venturi tubes are arranged along an inner circumferential direction of the cooling air duct, and are detachably connected to each other.
CN202021433179.7U 2020-07-20 2020-07-20 Rotary sinter cooling device Expired - Fee Related CN213300870U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021433179.7U CN213300870U (en) 2020-07-20 2020-07-20 Rotary sinter cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021433179.7U CN213300870U (en) 2020-07-20 2020-07-20 Rotary sinter cooling device

Publications (1)

Publication Number Publication Date
CN213300870U true CN213300870U (en) 2021-05-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021433179.7U Expired - Fee Related CN213300870U (en) 2020-07-20 2020-07-20 Rotary sinter cooling device

Country Status (1)

Country Link
CN (1) CN213300870U (en)

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