A vertical cooling uniform air distribution device for sintered ore

Abstract

A vertical cooling uniform air distribution device for sintered ore relates to the technical field of solid particulate material cooling equipment, comprising a cooling furnace, an air outlet chamber and an air inlet chamber, a plurality of horizontally arranged triangular through holes are symmetrically provided on the front and back faces and left and right faces of the upper part of the cooling furnace, an equalizing air outlet device is provided at the triangular through holes, and the equalizing air outlet device is connected to the air outlet chamber outside the cooling furnace; two upper and lower rows of horizontally spaced triangular through holes are symmetrically provided on the front and back faces of the lower part of the cooling furnace, the triangular through holes in the upper row and the triangular through holes in the lower row are staggered up and down, an upper supporting air distribution device and a lower supporting air distribution device are respectively provided in the triangular through holes in the upper row and the triangular through holes in the lower row; a shaking plate discharge device is suspended below the lower supporting air distribution device and at the bottom of the cooling furnace; the present invention improves the heat exchange effect and solves the current problems of low flue gas temperature, uneven cooling, and air flow segregation in the vertical cooling of high-temperature sintered ore.

Description

Technical Field

[0001] The invention relates to the technical field of solid particle material cooling equipment, in particular to a vertical cooling and uniform air distribution device for sintered ore. Background Art

[0002] It is well known that the sintering process accounts for approximately 15% of the total energy consumption in steel production, of which approximately 40% exists in the form of sensible heat from sintered ore. Recovering the sensible heat from sintered ore is a key energy conservation goal for steel companies. Air leakage in existing sintering ring cooling processes and equipment is a fundamental issue restricting the recovery and utilization of sintered ore waste heat. In the prior art, due to uneven pressure in flue gas flow, segregation occurs, and the air distribution is not uniform. Therefore, a device for uniformly distributing air for vertical cooling of sintered ore has been proposed to address the current issues of low flue gas temperature, uneven cooling, and airflow segregation in vertical cooling of high-temperature sintered ore, which has become a fundamental demand of those skilled in the art. Summary of the Invention

[0003] In order to overcome the deficiencies in the background technology, the present invention discloses a vertical cooling and uniform air distribution device for sintered ore.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A device for uniformly distributing air in vertical cooling of sintered ore comprises a cooling furnace, an air outlet chamber and an air inlet chamber. The cooling furnace is a square furnace body, and a plurality of horizontally arranged triangular through holes are symmetrically provided on the front and rear surfaces and left and right surfaces of the upper part thereof. An equalizing air outlet device is provided at the triangular through holes, and the equalizing air outlet device is connected to the air outlet chamber outside the cooling furnace. Two rows of horizontally spaced triangular through holes are symmetrically provided on the front and rear surfaces of the lower part of the cooling furnace. The triangular through holes in the upper row are staggered with the triangular through holes in the lower row. An upper supporting air distribution device and a lower supporting air distribution device are respectively provided in the triangular through holes and the triangular through holes in the lower row; the upper supporting air distribution device and the lower supporting air distribution device have the same structure and a discharge space is provided between them, both of which include a plurality of triangular prisms with cavities provided in the middle, the triangular prisms are respectively fixed in the plurality of triangular through holes, and a plurality of ventilation holes are provided on the inclined plates on both sides of the triangular prisms, and the ventilation holes are connected to the air inlet chamber provided outside the lower part of the cooling furnace; a shaking plate discharge device is suspended at the lower part of the lower supporting air distribution device and at the bottom of the cooling furnace.

[0006] The vertical cooling uniform air distribution device for sintered ore and the equalized pressure air outlet device are in the shape of a grid, which includes multiple inverted "V"-shaped stainless steel frames arranged horizontally and vertically and multiple heat-resistant T-shaped steels fixed in the inverted "V"-shaped frames. The multiple heat-resistant T-shaped steels are fixed at intervals in the multiple horizontally and vertically arranged inverted "V"-shaped stainless steel frames, and the two ends of the T-shaped steel horizontal plate are respectively fixedly connected to the two side plates of the inverted "V"-shaped stainless steel frame.

[0007] The vertical cooling uniform air distribution device for sintered ore and the pressure-equalizing air outlet device include a plurality of inverted "V"-shaped stainless steel frames arranged horizontally and vertically and a plurality of groups of stainless steel pipes fixed in the inverted "V"-shaped stainless steel frames. Each group of stainless steel pipes is connected end to end to form a truss structure and is fixedly connected to the two side plates of the inverted "V"-shaped stainless steel frame.

[0008] The sintered ore vertical cooling uniform air distribution device has an air outlet chamber and an air inlet chamber that are both ring-shaped and fixed to the outside of the cooling furnace, and the air inlet chamber is connected to the discharge port of the cooling furnace.

[0009] The vertical cooling and uniform air distribution device for sintered ore has a triangular prism with a cross section in the shape of an isosceles triangle, a base angle of which is greater than 45 degrees, and a wear-resistant layer is provided on both the left and right inclined plates. The wear-resistant layer does not cover the ventilation holes, and the hole diameter is Φ5mm.

[0010] The vertical cooling uniform air distribution device for sintered ore and the shaking discharge device include a shaking plate assembly, a stud and a spherical nut. The shaking plate assembly is suspended on the lower part of the lower support air distribution device through multiple studs. The shaking plate assembly includes a square supporting plate and a support frame. There is a blanking space along the length and width directions of the supporting plate. A plurality of vertically arranged scraping plates are arranged at intervals along the width direction of the stripping plate. A plurality of pads are arranged between the supporting plate and the support frame, and the pads are arranged along the length direction of the support frame; the upper end of the stud is connected to the bottom plate of the triangular prism of the lower support air distribution device through a spherical nut, and the lower end of the stud passes through the supporting plate and is connected to the support frame through a spherical nut.

[0011] The vertical cooling and uniform air distribution device for sintered ore also includes a driving device for driving the shaking discharge device to shake. The driving device includes a linear motor fixedly connected to both sides of the support frame. The linear motors are respectively arranged on both sides of the outside of the cooling furnace, and the driving rods on their output shafts pass through the two side walls of the cooling furnace and are fixedly connected to both sides of the support frame.

[0012] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0013] 1. The vertical uniform air distribution device for cooling sintered ore described in the present invention has an air inlet chamber arranged in a ring shape at the bottom of the cooling furnace, which is connected to the upper support air distribution device, the lower support air distribution device and the discharge port. The cooling air in the air inlet chamber enters the cooling furnace material layer evenly through the above three places, and fully exchanges heat with the high-temperature sintered ore from top to bottom, so that the entire material surface of the furnace bottom is supplied with air without dead corners, ensuring uniform air distribution on the large cavity material surface; after experiencing the same sintered ore material layer thickness, the cooling air reaches the equalizing air outlet device and enters the air outlet chamber. Under the premise of ensuring uniform cooling of the sintered ore in the large cavity cooling furnace, it can maximize the improvement of air distribution uniformity, reduce segregation caused by uneven pressure during flue gas flow, improve heat exchange effect, and solve the current problems of low flue gas temperature, uneven cooling, and airflow segregation in the vertical cooling of high-temperature sintered ore.

[0014] 2. The vertical cooling and uniform air distribution device for sintered ore of the present invention uniformly distributes air to the sintered ore layer while bearing the gravity of the sintered ore in the furnace by arranging the upper supporting air distribution device and the lower supporting air distribution device in parallel and at intervals.

[0015] 3. The vertical cooling and uniform air distribution device for sintered ore of the present invention suspends a shaking discharge device at the bottom of the cooling furnace. Under the driving action, it swings back and forth within a certain angle with the suspension point as the fulcrum, thereby discharging the sintered ore in the cooling furnace in a quantitative manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the filling sintered ore of the present invention.

[0017] Figure 2 Schematic diagram of the unfilled sintered ore of the present invention.

[0018] Figure 3 It is a schematic diagram of the connection between the shaking plate discharge device and the lower support air distribution device of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the shaking plate discharging device of the present invention.

[0020] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0021] Figure 6 It is a schematic structural diagram of the triangular prism of the present invention.

[0022] In the figure: 1. Cooling furnace; 2. Sintered ore; 3. Equalizing air outlet device; 4. Air outlet chamber; 5. Upper support air distribution device; 6. Lower support air distribution device; 7. Air inlet chamber; 8. Swing plate discharge device; 9. Driving rod; 10. Stud; 11. Scraper plate; 12. Support plate; 13. Pad; 14. Support frame; 15. Spherical nut; 16. Ventilation hole; 17. Triangular prism. DETAILED DESCRIPTION

[0023] The present invention can be explained in detail by the following examples, the purpose of which is to disclose the present invention and to protect all technical improvements within the scope of the present invention.

[0024] Combined with attachment Figure 1-3 The vertical cooling uniform air distribution device for sintered ore comprises a cooling furnace 1, an air outlet chamber 4 and an air inlet chamber 7. The cooling furnace 1 is a square furnace body, and a plurality of horizontally arranged triangular through holes are symmetrically provided on the front and back surfaces and left and right surfaces of the upper part thereof. An equalizing pressure air outlet device 3 is provided at the triangular through hole, and the equalizing pressure air outlet device 3 is connected with the air outlet chamber 4 outside the cooling furnace 1, forming an equalizing pressure chamber inside the sintered ore pile, and at the same time collecting the high-temperature flue gas after heat exchange and entering the waste heat recovery system; two rows of horizontally spaced triangular through holes are symmetrically provided on the front and back surfaces of the lower part of the cooling furnace 1, and the triangular through holes in the upper row are staggered with the triangular through holes in the lower row. The upper supporting air distribution device 5 and the lower supporting air distribution device 6 are respectively provided in the triangular through holes in the upper and lower rows; the upper supporting air distribution device 5 and the lower supporting air distribution device 6 have the same structure and a discharge space is provided between them, both of which include a plurality of triangular prisms with cavities in the middle, the triangular prisms are respectively fixed in a plurality of triangular through holes, and a plurality of ventilation holes are provided on the inclined plates on both sides of the triangular prisms, and the ventilation holes are connected with the air inlet chamber 7 provided outside the lower part of the cooling furnace 1, and the cooling air enters the material layer through the ventilation holes for heat exchange; a shaking plate discharge device 8 is suspended at the lower part of the lower supporting air distribution device 6 and at the bottom of the cooling furnace 1, and the shaking plate discharge device 8 evenly discharges the sintered ore after heat exchange and cooling from the cooling furnace.

[0025] The vertical cooling uniform air distribution device for sintered ore, the pressure-equalizing air outlet device 3 is in the shape of a grid.

[0026] It includes multiple inverted "V"-shaped stainless steel frames arranged horizontally and vertically and multiple heat-resistant T-shaped steels fixed in the inverted "V"-shaped frames. The multiple heat-resistant T-shaped steels are fixed at intervals in the multiple horizontally and vertically arranged inverted "V"-shaped stainless steel frames. The two ends of the T-shaped steel cross plate are respectively fixedly connected to the two side plates of the inverted "V"-shaped stainless steel frame; the heat-resistant T-shaped steel has the necessary strength and rigidity, and does not hinder the communication between the lower material surface and its inner cavity.

[0027] The vertical cooling uniform air distribution device for sintered ore, the pressure-equalizing air outlet device 3 includes a plurality of inverted "V"-shaped stainless steel frames arranged horizontally and vertically and a plurality of groups of stainless steel pipes fixed in the inverted "V"-shaped stainless steel frames. Each group of stainless steel pipes is connected end to end to form a truss structure and is fixedly connected to the two side plates of the inverted "V"-shaped stainless steel frame. The triangular stainless steel pipes have the necessary strength and rigidity and do not hinder the communication between the lower material surface and its inner cavity.

[0028] The sintered ore vertical cooling uniform air distribution device has an air outlet chamber 4 and an air inlet chamber 7 that are both ring-shaped and fixed to the outside of the cooling furnace 1 , and the air inlet chamber 7 is connected to the discharge port of the cooling furnace 1 .

[0029] The vertical cooling and uniform air distribution device for sintered ore has a triangular prism with a cross section in the shape of an isosceles triangle, a base angle of which is greater than 45 degrees, and a wear-resistant layer is provided on both the left and right inclined plates. The wear-resistant layer does not cover the ventilation holes, and the hole diameter is Φ5mm.

[0030] The vertical cooling uniform air distribution device for sintered ore, the shaking discharge device 8 includes a shaking plate assembly, a stud and a spherical nut. The shaking plate assembly is suspended on the lower part of the lower support air distribution device 6 by multiple studs. The shaking plate assembly includes a square supporting plate and a support frame. There is a blanking space along the length and width directions of the supporting plate. A plurality of vertically arranged scraping plates are arranged at intervals along the width direction of the stripping plate. A plurality of pads are arranged between the supporting plate and the support frame, and the pads are arranged along the length direction of the support frame; the upper end of the stud is connected to the bottom plate of the triangular prism of the lower support air distribution device 6 by a spherical nut, and the lower end of the stud passes through the supporting plate and is connected to the support frame by a spherical nut.

[0031] The vertical cooling and uniform air distribution device for sintered ore also includes a driving device for driving the shaking discharge device 8 to shake. The driving device includes a linear motor fixedly connected to both sides of the support frame. The linear motors are respectively arranged on both sides of the outside of the cooling furnace, and the driving rods on their output shafts pass through the two side walls of the cooling furnace and are fixedly connected to both sides of the support frame.

[0032] The vertical uniform air distribution device for cooling sintered ore described in the present invention is implemented. When in use, the pressure outlet device 3 is fixed on the upper part of the cooling furnace 1 cavity and is connected to the external air outlet chamber 4. After the hot sintered ore enters the cooling furnace 1, it accumulates above the equalizing air outlet device 3 to form a material seal, thereby preventing the heat exchange flue gas from the bottom up from being discharged from the furnace top. An equalizing pressure chamber is formed inside the sintered ore pile. The cooling air blown in from the lower part of the cooling furnace 1 passes through the sintered ore material layer of the same thickness, reaches this equalizing pressure chamber and enters the air outlet chamber 4, thereby avoiding wind path segregation caused by uneven pressure; the air outlet chamber 4 is connected to the equalizing pressure outlet device 3, collects the high-temperature flue gas after heat exchange, and enters the waste heat recovery system; the air inlet chamber 7 outside the lower part of the cooling furnace 1 provides the upper supporting air distribution device 5, the lower supporting air distribution device 6, and the cooling air entering the discharge port. The upper supporting air distribution device 5 provided at the lower part of the cooling furnace 1 Both ends are connected to the air inlet chamber 7, and the air vents on the two side plates allow cooling air to enter the material layer for heat exchange. The lower support air distribution device 6 is arranged in the same manner as the upper support air distribution device 5, and is arranged in parallel and spaced apart. While bearing the gravity of the sintered ore in the furnace, it evenly distributes air to the sintered ore material layer. Finally, under the action of the driving device, the shaking plate discharge device 8 uses the suspension point as a fulcrum and swings back and forth within a certain angle to evenly discharge the sintered ore after heat exchange and cooling from the cooling furnace 1.

[0033] The parts not described in detail in this invention are prior art.

[0034] The embodiments selected herein for the purpose of disclosing the invention are presently considered suitable, but it should be understood that the invention is intended to include all variations and modifications of the embodiments that fall within the scope of the concept and invention.

Claims

1. A vertical cooling and uniform air distribution device for sintered ore, comprising a cooling furnace, an air outlet chamber, and an air inlet chamber, characterized by: The cooling furnace is a square furnace body, with multiple horizontally arranged triangular through-holes symmetrically opened on the front and back surfaces and left and right surfaces of its upper part. The triangular through-holes are provided with equalized pressure air outlet devices, which are connected to the air outlet chamber outside the cooling furnace. Two rows of horizontally spaced triangular through-holes are symmetrically opened on the front and back surfaces of the lower part of the cooling furnace. The triangular through-holes in the upper row and the triangular through-holes in the lower row are arranged in an alternating manner. The upper and lower supporting air distribution devices are respectively provided in the triangular through-holes in the upper and lower rows. The upper supporting air distribution device and the lower supporting air distribution device have the same structure, and a discharge space is provided between them. Both include multiple triangular prisms with a cavity in the middle. The triangular prisms are respectively fixed in multiple triangular through holes. Multiple ventilation holes are provided on the inclined plates on both sides of the triangular prisms, and the ventilation holes are connected to the air inlet chamber arranged outside the lower part of the cooling furnace; the cross-section of the triangular prism is an isosceles triangle shape, and its base angle is greater than 45 degrees. Wear-resistant layers are provided on the left and right inclined plates, and the wear-resistant layers do not cover the ventilation holes, and the aperture is Φ5㎜; a shaking plate discharge device is suspended at the lower part of the lower supporting air distribution device and at the bottom of the cooling furnace.

2. The sintered ore vertical cooling uniform air distribution device according to claim 1 is characterized in that: The pressure-equalizing air outlet device is in the shape of a grid, which includes multiple inverted "V"-shaped stainless steel frames arranged horizontally and vertically and multiple heat-resistant T-shaped steels fixed in the inverted "V"-shaped frames. The multiple heat-resistant T-shaped steels are fixed at intervals in the multiple horizontally and vertically arranged inverted "V"-shaped stainless steel frames, and the two ends of the T-shaped steel horizontal plate are respectively fixedly connected to the two side plates of the inverted "V"-shaped stainless steel frame.

3. The sintered ore vertical cooling uniform air distribution device according to claim 1 is characterized by: The pressure-equalizing air outlet device includes multiple inverted "V"-shaped stainless steel frames arranged horizontally and vertically and multiple groups of stainless steel pipes fixed in the inverted "V"-shaped stainless steel frames. Each group of stainless steel pipes is connected end to end to form a truss structure and is fixedly connected to the two side plates of the inverted "V"-shaped stainless steel frame.

4. The sintered ore vertical cooling uniform air distribution device according to claim 1, characterized in that: The air outlet chamber and the air inlet chamber are both ring-shaped and fixed on the outside of the cooling furnace, and the air inlet chamber is communicated with the discharge port of the cooling furnace.

5. The vertical cooling and uniform air distribution device for sintered ore according to claim 1 is characterized by: The shaking discharge device includes a shaking plate assembly, a stud and a spherical nut. The shaking plate assembly is suspended on the lower part of the lower supporting air distribution device through multiple studs. The shaking plate assembly includes a square supporting plate and a supporting frame. Blanking space is opened along the length and width directions of the supporting plate. A plurality of vertically arranged scraping plates are arranged at intervals along the width direction of the supporting plate. A plurality of pads are arranged between the supporting plate and the supporting frame, and the pads are arranged along the length direction of the supporting frame; the upper end of the stud is connected to the bottom plate of the triangular prism of the lower supporting air distribution device through a spherical nut, and the lower end of the stud passes through the supporting plate and is connected to the supporting frame through a spherical nut.

6. The sintered ore vertical cooling uniform air distribution device according to claim 1, characterized in that: It also includes a driving device for driving the shaking discharge device to shake, and the driving device includes a linear motor fixedly connected to both sides of the support frame. The linear motors are respectively arranged on both sides of the outside of the cooling furnace, and the driving rods on their output shafts pass through the two side walls of the cooling furnace and are fixedly connected to both sides of the support frame.

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