High-pressure water vapor uniform spraying device

Abstract

The invention relates to the technical field of sintering, and discloses a high-pressure water vapor uniform spraying device which comprises a preheating tank body, air inlet equipment and air exhaust equipment, and a first motor is arranged on the side face, where one feeding port is located, of the preheating tank body; a first discharging plate and a second discharging plate which are matched with each other to complete discharging are sequentially arranged on the inner wall of the preheating tank body from top to bottom, a water vapor spraying device matched with the spraying control device to conduct spraying is connected to the middle end of the top face of the inner wall of the preheating tank body, a first supporting column is connected to the bottom of the water vapor spraying device, and a second motor is arranged in the first supporting column. According to the device, two first spray heads are started to spray a gas-liquid mixture which is subjected to high-pressure atomization by pressurizing equipment and is pressurized and heated while charging is carried out, a supporting frame is driven to rotate, the supporting frame rotates with a first supporting column as the axis, and along with rotation, when the supporting frame rotates to a second Hall sensor, the first Hall sensor is driven to rotate; and the second spray head is started and so on, so that uniform heating of all the materials is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of sintering, in particular to a high-pressure water vapor uniform injection device. Background Art

[0002] In the ironmaking sintering process of the prior art, if the temperature of the sintering mixture is lower than the dew point temperature (60-66°C), an over-wet layer will be formed under the drying zone of the sintering material layer, reducing the air permeability of the mixture layer and reducing the output of sintered ore. In order to eliminate this phenomenon, steam is currently used to preheat the sintering mixture to about 70°C. The method used is to add a steam nozzle in the secondary mixer and spray steam onto the surface of the material layer being granulated in the secondary mixer. The main disadvantages of this preheating method are: since the steam and the mixture are in surface contact heat transfer, the thermal efficiency is low; since the steam turns into water while transferring heat to the sintering mixture, the moisture content of the mixture will inevitably increase, so the moisture content of the sintering mixture entering the secondary mixer has to be controlled at a lower content, thus affecting the ball-forming performance of the secondary mixing. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the present invention provides a high-pressure water vapor uniform injection device, which has the advantages of uniform heating and the like, and solves the above-mentioned technical problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-pressure water vapor uniform injection device, comprising a preheating tank body, an air intake device and an exhaust device, a pressurizing device is connected to the middle end of the top surface of the preheating tank body, and feed ports are symmetrically arranged on both sides of the preheating tank body. A first motor is arranged on the side where one of the feed ports of the preheating tank body is located, and a gear is connected to the output end of the first motor. A face gear is arranged on the inner wall of the preheating tank body, and an injection control device for controlling the pressurizing device to perform pressurized output is connected to the bottom of the face gear. The inner wall of the preheating tank body is provided with a first discharge plate and a second discharge plate that cooperate with each other to complete the unloading from top to bottom, a water vapor injection device that cooperates with the injection control device to inject is connected to the middle end of the top surface of the inner wall of the preheating tank body, and a first support column is connected to the bottom of the water vapor injection device, and a second motor is arranged in the first support column.

[0007] As a preferred technical solution of the present invention, a gear is fixedly installed at the output end of the first motor, the gear is meshed with the top surface teeth of the face gear, and the face gear is rotatably connected to the inner wall of the preheating tank.

[0008] As a preferred technical solution of the present invention, the injection control device includes a support frame, a magnetic block, a Hall sensor and a scraper.

[0009] As a preferred technical solution of the present invention, the support frame is fixedly installed on the bottom surface of the face gear. There are two support frames, which are equidistantly arranged at the bottom of the face gear. The two support frames are connected by a circular ring, and scrapers in opposite directions are fixedly arranged on the bottom surfaces of the two support frames.

[0010] As a preferred technical solution of the present invention, the support frame is "L" shaped, and one of the support frames is embedded with a magnetic block on one side facing the preheating tank body, and the Hall sensors are evenly arranged on the inner wall of the preheating tank body and have the same height as the magnetic block.

[0011] As a preferred technical solution of the present invention, the first discharge plate and the second discharge plate are rotatably connected, the first discharge plate and the preheating tank body are rotatably connected, there is a gap between the top surface of the first discharge plate and the lowest position of the scraper, the first discharge plate and the second discharge plate are provided with a plurality of through grooves of the same size on their surfaces, the through grooves are equidistantly provided on the surfaces of the first discharge plate and the second discharge plate, the inner diameter of the through grooves on the surfaces of the first discharge plate and the second discharge plate close to the rotation axis of the first discharge plate is lower than the inner diameter away from the rotation axis, and the top surface of the first discharge plate is provided with an annular inclined plate which fits the inner wall of the preheating tank body and cooperates with the rotation of the first discharge plate.

[0012] As a preferred technical solution of the present invention, the water vapor injection device includes a second support column, a first nozzle, a second nozzle and a fixing frame.

[0013] As a preferred technical solution of the present invention, the second support column is fixedly installed between the first support column, two first nozzles are provided, and the corresponding two feed ports are provided inside the fixed frame, the number of the second nozzles is four, and they are provided inside the fixed frame, the total number of the first nozzles and the second nozzles is consistent with the number of through grooves on the surface of the second discharge plate, and is consistent with the angle between adjacent through grooves on the surface of the second discharge plate.

[0014] As a preferred technical solution of the present invention, the second motor is fixedly installed on the inner wall of the first support column, the output end of the second motor is fixedly installed on the middle end of the top surface of the first discharge plate, and a heat dissipation pipe that passes through the second support column, the fixed frame and the top surface of the preheating tank body is provided at the bottom end of the inner wall of the second support column. The heat dissipation pipe is connected to the exhaust equipment and is used to extract the gas above the second motor that is attached to the bottom of the second support column. A partition layer is provided between the second support column and the preheating tank body, and the partition layer is made of breathable material. The heat dissipation pipe extends upward from the area between the first nozzle and the second nozzle.

[0015] As a preferred technical solution of the present invention, a blocking strip is arranged in the gap between the bottom surface of the first support column and the first discharge plate, and the blocking strip is a fine brush-like structure that allows gas to pass through. An air supply pipe that passes through the fixed frame and the top surface of the preheating tank body is arranged in the first support column, and the air supply pipe is connected to the air intake device.

[0016] Compared with the prior art, the present invention provides a high-pressure water vapor uniform injection device, which has the following beneficial effects:

[0017] 1. The present invention starts two first nozzles to spray the material at the feed port while adding materials, and the gas-liquid mixture is pressurized and heated by high-pressure atomization by a pressurizing device, which drives the support frame to rotate. The support frame rotates with the first support column as the axis. As the rotation proceeds, when it rotates to the second Hall sensor, the second nozzle is started, and so on, thereby ensuring uniform heating of all materials.

[0018] 2. In the present invention, the heat dissipation pipe extends upward from the area between the first nozzle and the second nozzle, and performs preliminary heat dissipation on the first motor through the exhaust device. The external gas can enter the second support column from the partition layer, flow through the through holes on the surface of the heat dissipation pipe, pass through the heat dissipation part of the first motor, and be discharged through the heat dissipation pipe to complete the heat dissipation of the first motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the present invention;

[0021] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram in the middle;

[0022] Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0023] Figure 5 For the present invention Figure 2 A partial enlarged schematic diagram of point C in the middle;

[0024] Figure 6 It is a bottom view of the interior of the present invention.

[0025] Among them: 1. preheating tank body; 2. first motor; 3. pressurizing device; 4. first discharge plate; 5. second discharge plate; 6. gear; 7. injection control device; 701. support frame; 702. magnetic block; 703. Hall sensor; 704. scraper; 8. annular inclined plate; 9. face gear; 10. first support column; 11. blocking bar; 12. second motor; 13. heat dissipation pipe; 14. water vapor injection device; 1401. second support column; 1402. first nozzle; 1403. second nozzle; 1404. fixing frame; 15. air supply pipe; 16. partition layer. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-6 A high-pressure water vapor uniform injection device comprises a preheating tank body 1, an air intake device and an exhaust device, a pressurizing device 3 is connected to the middle end of the top surface of the preheating tank body 1, and feed ports are symmetrically arranged on both sides of the preheating tank body 1. A first motor 2 is arranged on the side where one of the feed ports of the preheating tank body 1 is located, and a gear 6 is connected to the output end of the first motor 2. A face gear 9 is arranged on the inner wall of the preheating tank body 1, and an injection control device 7 for controlling the pressurizing device 3 to perform pressurized output is connected to the bottom of the face gear 9. A first discharge plate 4 and a second discharge plate 5 that cooperate with each other to complete the unloading are arranged on the inner wall of the preheating tank body 1 from top to bottom. A water vapor injection device 14 that cooperates with the injection control device 7 for injection is connected to the middle end of the top surface of the inner wall of the preheating tank body 1, and a first support column 10 is connected to the bottom of the water vapor injection device 14, and a second motor 12 is arranged in the first support column 10.

[0028] Further, the four second nozzles 1403 are numbered, with the first second nozzle 1403 that the support frame 701 rotates through being numbered as No. 1, followed by No. 1, No. 2, No. 3 and No. 4. A gear 6 is fixedly mounted on the output end of the first motor 2, and the gear 6 is meshed with the top surface teeth of the face gear 9. The face gear 9 is rotatably connected to the inner wall of the preheating tank 1. The injection control device 7 includes a support frame 701, a magnetic block 702, a Hall sensor 703 and a scraper 704. The first motor 2 is started to drive the gear 6 to rotate. At the same time, the face gear 9 is driven to rotate, which drives the support frame 701 to rotate. The support frame 701 rotates with the first support column 10 as the axis. As the rotation proceeds, the magnetic block 702 will pass through the first Hall sensor 703. At this time, since the first circle has not been completed, the second nozzle No. 4 1403 is not started. When it rotates to the second Hall sensor 703, the second nozzle No. 1 1403 is started, and so on. When it rotates to the first Hall sensor 703 again, the second nozzle No. 4 1403 is started.

[0029] Furthermore, the support frame 701 is fixedly installed on the bottom surface of the face gear 9. There are two support frames 701, which are equidistantly arranged at the bottom of the face gear 9. The two support frames 701 are connected by a circular ring, and the circular ring is rotatably connected to the outer end of the first support column 10. The bottom surfaces of the two support frames 701 are fixed with scrapers 704 in opposite directions, which will push the support frames 701 to rotate when the first motor 2 is started. Since the support frame 701 is supported at the outer end of the first support column 10 by a circular ring, it can ensure that the shear force is dispersed when the sintered powder falls to the top of the support frame 701, thereby extending the service life of the support frame 701 and reducing the load capacity of the face gear 9.

[0030] Furthermore, the support frame 701 is "L"-shaped, and one of the support frames 701 facing the preheating tank body 1 is embedded with a magnetic block 702, and the Hall sensor 703 is evenly arranged on the inner wall of the preheating tank body 1 and has the same height as the magnetic block 702.

[0031] Furthermore, the first discharge plate 4 and the second discharge plate 5 are rotatably connected, and the first discharge plate 4 and the preheating tank body 1 are rotatably connected. There is a gap between the top surface of the first discharge plate 4 and the lowest position of the scraper 704. The surfaces of the first discharge plate 4 and the second discharge plate 5 are provided with a plurality of through grooves of the same size, and the through grooves are equidistantly provided on the surfaces of the first discharge plate 4 and the second discharge plate 5. The inner diameter of the through grooves on the surfaces of the first discharge plate 4 and the second discharge plate 5 close to the rotation axis of the first discharge plate 4 is lower than the inner diameter away from the rotation axis. The top surface of the first discharge plate 4 is provided with an annular inclined plate 8 which fits the inner wall of the preheating tank body 1 and cooperates with the first discharge plate 4 to rotate.

[0032] Furthermore, the water vapor injection device includes a second support column 1401 , a first nozzle 1402 , a second nozzle 1403 and a fixing frame 1404 .

[0033] Furthermore, the second support column 1401 is fixedly installed between the first support column 10, two first nozzles 1402 are arranged, and the corresponding two feed ports are arranged inside the fixed frame 1404, and the number of second nozzles 1403 is four, which are arranged inside the fixed frame 1404. The total number of the first nozzles 1402 and the second nozzles 1403 is consistent with the number of through grooves on the surface of the second discharge plate 5, and is consistent with the angle between adjacent through grooves on the surface of the second discharge plate 5. By starting the second motor 12, the first discharge plate 4 is driven to rotate. When the through grooves of the first discharge plate 4 and the through grooves of the second discharge plate 5 intersect during the rotation, the unloading is completed.

[0034] Furthermore, the second motor 12 is fixedly installed on the inner wall of the first support column 10, and the output end of the second motor 12 is fixedly installed on the middle end of the top surface of the first discharge plate 4. The bottom end of the inner wall of the second support column 1401 is provided with a heat dissipation pipe 13 that penetrates the second support column 1401, the fixing frame 1404 and the top surface of the preheating tank body 1. The heat dissipation pipe 13 is connected to the exhaust equipment and is used to extract the gas above the second motor 12 that is attached to the bottom of the second support column 1401. A partition layer 16 is provided between the second support column 1401 and the preheating tank body 1. The partition layer 16 is made of breathable material. The heat dissipation pipe 13 extends upward from the area between the first nozzle 1402 and the second nozzle 1403, and the first motor 2 is preliminarily dissipated by the exhaust equipment. The outside gas can enter the second support column 1401 from the partition layer, and flow through the heat dissipation part of the first motor 2 through the through holes on the surface of the heat dissipation pipe 13, and be discharged through the heat dissipation pipe 13.

[0035] Furthermore, a blocking strip 11 is provided in the gap between the bottom surface of the first support column 10 and the first discharge plate 4. The blocking strip 11 is a fine brush-like structure that allows gas to pass through. The first support column 10 is provided with an air supply pipe 15 that passes through the fixing frame 1404 and the top surface of the preheating tank body 1. The air supply pipe 15 is connected to the air intake device. By continuously supplying dry and heated gas, it is ensured that the first support column 10 is in a positive pressure environment and that powder does not enter.

[0036] The specific use process of the present invention is as follows:

[0037] First, feed the material through the feed ports symmetrically arranged on both sides of the preheating tank body 1. While feeding, start the two first nozzles 1402 to spray the material at the feed ports. The material is pressurized and heated by the pressurizing device 3 for high-pressure atomization. At this time, the through grooves between the first discharge plate 4 and the second discharge plate 5 do not overlap. At this time, start the first motor 2 to drive the gear 6 to rotate, and at the same time drive the face gear 9 to rotate, which drives the support frame 701 to rotate. The support frame 701 rotates with the first support column 10 as the axis. As the rotation proceeds, the magnetic block 702 It will pass through the first Hall sensor 703. At this time, since the first circle has not been completed, the second nozzle No. 4 1403 is not started. When it rotates to the second Hall sensor 703, the second nozzle No. 1403 is started. And so on. When it rotates to the first Hall sensor 703 again, the second nozzle No. 4 1403 is started, and the second motor 12 is started at the same time to drive the first discharge plate 4 to rotate. When the through groove of the first discharge plate 4 and the through groove of the second discharge plate 5 intersect during the rotation process, the unloading is completed, thereby ensuring uniform heating of the incoming material.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure water vapor uniform injection device, comprising a preheating tank body (1), an air intake device and an exhaust device, wherein a pressurizing device (3) is connected to the middle end of the top surface of the preheating tank body (1), and feed ports are symmetrically arranged on both sides of the preheating tank body (1), characterized in that: A first motor (2) is arranged on the side where one of the feed ports of the preheating tank body (1) is located, and a gear (6) is connected to the output end of the first motor (2). A face gear (9) is arranged on the inner wall of the preheating tank body (1), and a spray control device (7) for controlling a pressurizing device (3) to output pressurized material is connected to the bottom of the face gear (9). A first discharge plate (4) and a second discharge plate (5) for cooperating with each other to complete material discharge are arranged on the inner wall of the preheating tank body (1) from top to bottom. A water vapor spray device (14) for cooperating with the spray control device (7) to spray is connected to the middle end of the top surface of the inner wall of the preheating tank body (1), and a first support column (10) is connected to the bottom of the water vapor spray device (14), and a second motor (12) is arranged inside the first support column (10).

2. A high-pressure water vapor uniform injection device according to claim 1, characterized in that: A gear (6) is fixedly mounted on the output end of the first motor (2), the gear (6) and the top teeth of the face gear (9) are meshed with each other, and the face gear (9) is rotatably connected to the inner wall of the preheating tank (1).

3. A high-pressure water vapor uniform injection device according to claim 2, characterized in that: The injection control device (7) comprises a support frame (701), a magnetic block (702), a Hall sensor (703) and a scraper (704).

4. A high-pressure water vapor uniform injection device according to claim 3, characterized in that: The support frame (701) is fixedly mounted on the bottom surface of the face gear (9); there are two support frames (701) which are equidistantly arranged on the bottom surface of the face gear (9); the two support frames (701) are connected via a circular ring; and scrapers (704) in opposite directions are fixedly arranged on the bottom surfaces of the two support frames (701).

5. A high-pressure water vapor uniform injection device according to claim 3, characterized in that: The support frame (701) is in an "L" shape, and a magnetic block (702) is embedded and connected to one side of the support frame (701) facing the preheating tank body (1), and the Hall sensor (703) is evenly arranged on the inner wall of the preheating tank body (1) and has the same height as the magnetic block (702).

6. A high-pressure water vapor uniform injection device according to claim 3, characterized in that: The first discharge plate (4) and the second discharge plate (5) are rotatably connected, and the first discharge plate (4) and the preheating tank body (1) are rotatably connected. There is a gap between the top surface of the first discharge plate (4) and the lowest position of the scraper (704). The surfaces of the first discharge plate (4) and the second discharge plate (5) are provided with a plurality of through grooves of the same size, and the through grooves are equidistantly provided on the surfaces of the first discharge plate (4) and the second discharge plate (5). The inner diameter of the through grooves on the surfaces of the first discharge plate (4) and the second discharge plate (5) near the rotation axis of the first discharge plate (4) is smaller than the inner diameter away from the rotation axis. The top surface of the first discharge plate (4) is provided with an annular inclined plate (8) which fits the inner wall of the preheating tank body (1) and cooperates with the first discharge plate (4) to rotate.

7. A high-pressure water vapor uniform injection device according to claim 3, characterized in that: The water vapor injection device comprises a second support column (1401), a first nozzle (1402), a second nozzle (1403) and a fixing frame (1404).

8. A high-pressure water vapor uniform injection device according to claim 7, characterized in that: The second support column (1401) is fixedly installed between the first support column (10), two first nozzles (1402) are provided, and the corresponding two feed ports are provided inside the fixed frame (1404), the number of the second nozzles (1403) is four, and they are provided inside the fixed frame (1404), the total number of the first nozzles (1402) and the second nozzles (1403) is consistent with the number of through grooves on the surface of the second discharge plate (5), and is consistent with the angle between adjacent through grooves on the surface of the second discharge plate (5).

9. A high-pressure water vapor uniform injection device according to claim 8, characterized in that: The second motor (12) is fixedly mounted on the inner wall of the first support column (10), and the output end of the second motor (12) is fixedly mounted on the middle end of the top surface of the first discharge plate (4). The bottom end of the inner wall of the second support column (1401) is provided with a heat dissipation pipe (13) that passes through the second support column (1401), the fixing frame (1404) and the top surface of the preheating tank body (1). The heat dissipation pipe (13) is connected to the exhaust device and is used to extract the gas above the bottom of the second support column (1401) that is in contact with the second motor (12). An isolation layer (16) is provided between the second support column (1401) and the preheating tank body (1), and the isolation layer (16) is made of a breathable material. The heat dissipation pipe (13) extends upward from the area between the first nozzle (1402) and the second nozzle (1403).

10. A high-pressure water vapor uniform injection device according to claim 7, characterized in that: A blocking strip (11) is arranged in the gap between the bottom surface of the first support column (10) and the first discharge plate (4); the blocking strip (11) is a fine brush-like structure that allows gas to pass through; an air supply pipe (15) is arranged in the first support column (10) and passes through the fixing frame (1404) and the top surface of the preheating tank body (1); the air supply pipe (15) is connected to the air intake device.

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