Automatic control device of steam fluidization calcining machine

Abstract

The invention provides an automatic control device for a steam fluidization calcining machine, and relates to the technical field of automatic control, the automatic control device comprises a driving control unit, a transmission mechanism, a backflow mechanism and an adjusting test system, a fluidization steam distribution plate is installed at the bottom of the inner side of the calcining machine, and the driving control unit is carried at the top position of the calcining machine. The automatic control device of the steam fluidization calcining machine is characterized in that a driving control unit is arranged in the calcining machine shell, a mounting plate is integrally formed at the bottom of the driving control unit, and the bottom of the mounting plate is in threaded connection with the calcining machine shell, so that the problems proposed in the background technology are solved, and a fluidization steam distribution plate blocking device at the bottom can be tested; compared with the prior art, more comprehensive steam spraying state data are obtained, so that the subsequent steam pressure regulation and control are more effective, the temperature data of planes with different heights can be obtained in the calcining process, the steam temperature can be conveniently regulated, and the effect of recycling and reusing a sunken material part can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of automatic control, in particular to an automatic control device for a steam fluidized calciner. Background Art

[0002] Steam fluidized bed calciner is a highly efficient heat treatment equipment, mainly used for calcination, drying, decomposition and other processes of powdered or granular materials. It introduces high-temperature steam through the bottom fluidized steam distribution plate, so that the material is suspended in the fluidized bed and forms a fluid-like state, achieving full gas-solid contact. Steam directly exchanges heat with the material, the heat transfer is uniform and fast, and the energy consumption is lower than the traditional calcination method. Current steam fluidized bed calciner equipment is mostly integrated with intelligent control systems to optimize steam usage and calcination time, further reducing operating costs.

[0003] In the prior art, the control device installed in the steam fluidized calciner only detects the calcination temperature of the internal material through the built-in temperature sensor to control the temperature of the steam injected from the outside. However, since the fluidized steam distribution plate is in the bottom area, the temperature at different heights inside the calciner is also different. Therefore, it is difficult for the conventional control system to directly and flexibly collect the average temperature within the plane range of different heights. The data collection is not accurate enough, so the reliability of the subsequent control process is reduced. On the other hand, materials of different quantities and specifications have different pressure requirements for injected steam, and the fluidized steam distribution plate at the bottom will also become clogged after long-term use. The conventional control device cannot automatically and effectively adjust the subsequent steam pressure according to the use status of the fluidized steam distribution plate, thereby increasing the probability of clogging. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an automatic control device for a steam fluidized calcining machine to solve the problems raised in the above-mentioned background technology. The present invention can test the blockage device of the fluidized steam distribution plate at the bottom and obtain more comprehensive steam spraying state data, so as to more effectively regulate the subsequent steam pressure. It can also obtain temperature data at different height planes during the calcination process to facilitate the adjustment of the steam temperature, so that the part of the material that has sunk can be recycled and reused.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a steam fluidized calcining machine automation control device, comprising an automation control device body and a fluidized steam distribution plate, the automation control device body comprising a drive control unit, a transmission mechanism, a reflux mechanism and an adjustment test system, the fluidized steam distribution plate is installed at the inner bottom of the calcining machine, the drive control unit is mounted at the top position of the calcining machine, and the bottom of the drive control unit is integrally formed with a mounting plate, the bottom of the mounting plate is screwed to the calcining machine housing, a transmission mechanism is installed on one side of the drive control unit, a transmission sleeve is integrally formed at the bottom of the transmission mechanism, a reflux mechanism is welded to the side of the transmission sleeve, a surrounding plate is welded to the bottom of the reflux mechanism, the surrounding plate is sleeved on the side of the fluidized steam distribution plate, the bottom of the fluidized steam distribution plate is connected to a steam pipe, one end of the steam pipe is connected to an air pump, and the steam pipe is communicated with the internal cavity of the fluidized steam distribution plate.

[0006] Furthermore, the drive control unit includes a motor, a transmission box and a drive sleeve, a support plate is welded on the top of the transmission box, a column is inserted on the top of the support plate, a top plate is welded on the top of the column, and a ranging module and an infrared temperature measurement module are screwed on the end of the top plate.

[0007] Furthermore, the motor is screwed on the top of the transmission box, a notch is provided on the side of the transmission box, a gear is welded on the side of the drive sleeve, and the gear is inserted into the transmission box through the notch on the side of the transmission box.

[0008] Furthermore, the transmission mechanism includes a transmission sleeve and a heat conducting plate, wherein the transmission sleeve is integrally formed at the end of the driving sleeve, a plug-in interface is provided on the side of the driving sleeve, and a heat conducting plate is embedded in the plug-in interface.

[0009] Furthermore, a partition is welded at one end of the heat conducting plate, the partition is mounted on the inner wall of the driving sleeve, and a temperature measuring plate is integrally formed at the end of the heat conducting plate.

[0010] Furthermore, there are four heat conducting plates, and each heat conducting plate is inserted at different angles and heights outside the driving sleeve, and the infrared temperature measuring module irradiates vertically downward onto the surface of the temperature measuring plate.

[0011] Furthermore, an inner convex ring is welded on the inner wall of the transmission sleeve, a groove is opened on the inner wall of the inner convex ring, the adjustment test system includes a driven shaft, a floating plate and a linkage plate, a linkage plate is welded on the top of the driven shaft, and a reflective sheet is mounted on the surface of the linkage plate.

[0012] Furthermore, a plug-in block is integrally formed on the side of the linkage plate, and the plug-in block is used to be embedded in the interior of the card slot. A floating plate is installed at the bottom end of the driven shaft, and the floating plate is used to press on the surface of the fluidized steam distribution plate. The ranging module irradiates the surface of the reflective plate vertically downward through a laser beam.

[0013] Furthermore, the reflux mechanism includes an enclosure, a reflux channel and a diffuser plate. A support column is inserted at the bottom of the fluidized steam distribution plate, a bottom plate is welded to the bottom of the support column, a sealing plate is welded to the bottom of the side of the fluidized steam distribution plate, the enclosure is embedded between the fluidized steam distribution plate and the bottom plate, and a docking hole is opened on the inner wall of the enclosure.

[0014] Furthermore, a reflow channel is welded to the top of the enclosure plate, a diffuser plate is integrally formed on the top of the reflow channel, a conical plate is integrally formed on the top of the diffuser plate, a reflow cavity is opened on the inner side of the diffuser plate, a nozzle is opened at the bottom of the reflow cavity, and the ends of the conical plate and the diffuser plate are welded and fixed to the surface of the transmission sleeve.

[0015] Beneficial effects of the present invention: 1. The steam fluidized calciner automation control device is equipped with an adjustment test system on the internal fluidized steam distribution plate, and is linked controlled by the top drive control unit, so that it can test the blockage device of the fluidized steam distribution plate at the bottom and obtain more comprehensive steam spray status data. It can detect in time when the steam pressure is too low or too high, so as to make the subsequent steam pressure regulation more effective.

[0016] 2. The steam fluidized bed calciner automatic control device can obtain temperature data at different height planes during the calcination process by driving the control unit in conjunction with multiple heat conduction plates carried in the transmission mechanism. The temperature obtained at each height can reflect the overall temperature conditions in the height plane, avoiding the problem that the temperature measurement position is always fixed and the overall temperature cannot be accurately reflected. It can also facilitate the adjustment of the steam temperature.

[0017] 3. The automatic control device of the steam fluidized calciner can recycle and reuse the sinking materials. After the sinking materials enter the fluidized steam distribution plate at the bottom, as the reflux mechanism rotates, the materials can be collected by a part of the separated high-pressure steam, and then transported toward the top and discharged into the calciner again. This process is triggered by an automatic drive control unit, thereby extending the maintenance and overhaul period of the calciner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of the appearance of an automatic control device for a steam fluidized calcining machine according to the present invention; Figure 2 It is a schematic structural diagram of the driving control unit part of the present invention; Figure 3 It is a structural schematic diagram of the transmission mechanism part of the present invention; Figure 4 is an internal cross-sectional view of a transmission sleeve of the present invention; Figure 5 A structural diagram of the test system portion for adjusting the present invention; Figure 6 It is a connection diagram of the fluidized steam plate of the present invention; Figure 7 It is a structural schematic diagram of the reflux mechanism part of the present invention; In the figure: 1. fluidized steam distribution plate; 2. steam pipeline; 3. air pump; 4. drive control unit; 5. transmission mechanism; 6. reflux mechanism; 7. adjustment test system; 8. mounting plate; 9. support plate; 10. motor; 11. transmission box; 12. column; 13. top plate; 14. drive sleeve; 15. gear; 16. distance measurement module; 17. infrared temperature measurement module; 18. plug interface; 19. heat conduction plate; 20. partition; 21. temperature measurement plate; 22. transmission sleeve; 23. inner convex ring; 24. slot; 25. diffuser plate; 26. conical plate; 27. reflux cavity; 28. nozzle; 29. ​​driven shaft; 30. linkage plate; 31. reflector; 32. plug-in block; 33. floating plate; 34. support column; 35. bottom plate; 36. blocking plate; 37. enclosure; 38. docking hole; 39. reflux channel. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] See also Figures 1 to 7The present invention provides the following technical solutions: a steam fluidized calcining machine automation control device, comprising an automation control device body and a fluidized steam distribution plate 1, the automation control device body comprising a drive control unit 4, a transmission mechanism 5, a reflux mechanism 6 and an adjustment test system 7, the fluidized steam distribution plate 1 is installed at the inner bottom of the calcining machine, the drive control unit 4 is mounted at the top position of the calcining machine, and the bottom of the drive control unit 4 is integrally formed with a mounting plate 8, the bottom of the mounting plate 8 is screwed to the calcining machine housing, a transmission mechanism 5 is installed on one side of the drive control unit 4, a transmission sleeve 22 is integrally formed at the bottom of the transmission mechanism 5, a reflux mechanism 6 is welded to the side of the transmission sleeve 22, a shroud 37 is welded to the bottom of the reflux mechanism 6, the shroud 37 is sleeved on the side of the fluidized steam distribution plate 1, a steam pipe 2 is connected to the bottom of the fluidized steam distribution plate 1, an air pump 3 is connected to one end of the steam pipe 2, and the steam pipe 2 is communicated with the internal cavity of the fluidized steam distribution plate 1. The automatic control device automatically adjusts the injection pressure and temperature of the injected steam by collecting the steam ejection pressure at the bottom of the calciner and the temperature data at different heights.

[0021] When the present invention is in operation, the driving control unit 4 built on the top of the calciner drives the transmission mechanism 5 in the middle to rotate. During the rotation of the transmission mechanism 5, the temperature state of different height areas inside the calciner is monitored and processed through the infrared temperature measurement module 17 on the top. When it is monitored that the temperature at each height inside the calciner is low, the temperature of the injected steam is directly controlled to increase, so that when it is monitored that the temperature at each height inside the calciner is high, the temperature of the injected steam is directly controlled to decrease; when it is monitored that the temperature at the bottom end of the calciner is high and the temperature at the top end is low, the temperature of the injected steam is controlled to remain unchanged and the steam pressure is increased, so that the bottom high-temperature airflow is further fully mixed with the top; when it is monitored that the temperature at the bottom end of the calciner is low and the temperature at the top end is high, the temperature of the injected steam is controlled to remain unchanged and the steam pressure is reduced. Finally, the steam regulation process is realized through the collected temperature data, and at the same time, the pressure average of the bottom steam injection is measured in cooperation with the inner adjustment test system 7 as a basis for further regulating the injected steam to achieve the fluidization effect. The distance measurement module 16 and the infrared temperature measurement module 17 used therein are both existing mature technologies and do not belong to the protection scope of the present invention. Therefore, the details of their internal structures, parameters, circuit connection structures, etc. are not described here.

[0022] In this embodiment, the driving control unit 4 includes a motor 10, a transmission box 11 and a driving sleeve 14. A support plate 9 is welded on the top of the transmission box 11. A column 12 is inserted on the top of the support plate 9. A top plate 13 is welded on the top of the column 12. A distance measuring module 16 and an infrared temperature measuring module 17 are screwed on the end of the top plate 13. The motor 10 is screwed on the top of the transmission box 11. A notch is opened on the side of the transmission box 11. A gear 15 is welded on the side of the driving sleeve 14. The gear 15 penetrates into the inside of the transmission box 11 from the notch on the side of the transmission box 11.

[0023] Specifically, after starting the motor 10, the output shaft of the motor 10 drives the gear 15 group structure inside the transmission box 11 to rotate, and then drives the gear 15 on the drive sleeve 14 to rotate synchronously. After the drive sleeve 14 drives the transmission mechanism 5 at the bottom and the adjustment test system 7 to operate, the temperature status of different height areas inside the calciner can be monitored and processed, and the initial pressure data of the steam sprayed from the fluidized steam distribution plate 1 can be detected. The distance measurement module 16 and the infrared temperature measurement module 17 installed on the top plate 13 are used to irradiate the inside of the drive sleeve 14 to complete the above-mentioned monitoring data collection process.

[0024] In this embodiment, the transmission mechanism 5 includes a transmission sleeve 22 and a heat conducting plate 19. The transmission sleeve 22 is integrally formed at the end of the driving sleeve 14. The side of the driving sleeve 14 is provided with an insertion port 18, and the heat conducting plate 19 is embedded in the insertion port 18. A partition 20 is welded at one end of the heat conducting plate 19, and the partition 20 is installed on the inner wall of the driving sleeve 14. A temperature measuring plate 21 is integrally formed at the end of the heat conducting plate 19. There are four heat conducting plates 19, and each heat conducting plate 19 is inserted at different angles and different heights outside the driving sleeve 14. The infrared temperature measuring module 17 irradiates the surface of the temperature measuring plate 21 vertically downward. By driving the control unit 4 in conjunction with the multiple heat conducting plates 19 carried in the transmission mechanism 5, temperature data at different height planes can be obtained during the calcination process, and the temperature obtained at each height can reflect the overall temperature situation in the height plane, avoiding the problem that the temperature measuring position is always fixed and cannot accurately reflect the overall temperature, and it is also convenient to adjust the steam temperature.

[0025] Specifically, the rotation of the transmission mechanism 5 will directly drive each heat conducting plate 19 on the side to rotate. On the one hand, the heat conducting plate 19 provides a basic stirring effect on the material part inside the calciner. At the same time, the heat conducting plate 19 also uses its own high thermal conductivity to transfer the temperature to the inner temperature measuring plate 21. The infrared temperature measuring module 17 at the top fixed position measures and collects the temperature on each temperature measuring plate 21 in turn during the driving sleeve 14 to rotate, thereby achieving the purpose of comprehensively collecting the actual temperature on different height planes.

[0026] In this embodiment, an inner convex ring 23 is welded on the inner wall of the transmission sleeve 22, and a slot 24 is provided on the inner wall of the inner convex ring 23. The adjustment test system 7 includes a driven shaft 29, a floating plate 33 and a linkage plate 30. The linkage plate 30 is welded on the top of the driven shaft 29, and a reflective sheet 31 is mounted on the surface of the linkage plate 30. A plug-in block 32 is integrally formed on the side of the linkage plate 30, and the plug-in block 32 is used to be embedded in the slot 24. A floating plate 33 is installed at the bottom end of the driven shaft 29, and the floating plate 33 is used to press on the surface of the fluidized steam distribution plate 1. The distance measurement module 16 irradiates the surface of the reflective sheet 31 vertically downward through a laser beam. An adjustment test system 7 is mounted on the internal fluidized steam distribution plate 1, and is linked to the driving control unit 4 at the top, so that it can test the blockage device of the fluidized steam distribution plate 1 at the bottom and obtain more comprehensive data on the steam spraying state. It can detect in time when the steam pressure is too low or too high, so that the subsequent steam pressure regulation is more effective.

[0027] Specifically, the floating plate 33 at the bottom is pressed on the surface of the fluidized steam distribution plate 1. Therefore, when the air pump 3 at the bottom injects the high-temperature steam into the fluidized steam distribution plate 1 along the steam pipe 2 and blows it toward the top with the help of the air holes on the fluidized steam distribution plate 1, the floating plate 33 pressed on the surface of the fluidized steam distribution plate 1 will also be blown upward, and the current steam pressure corresponding to the range of the fluidized steam distribution plate 1 can be judged by the blowing height of the floating plate 33. When the transmission sleeve 22 drives the entire adjustment test system 7 to rotate through the inner convex ring 23 and the card groove 24 in conjunction with the linkage plate 30 and the plug-in block 32, the entire floating plate 33 can be rotated all the time without affecting the lifting movement of the floating plate 33 blown toward the top by the high-temperature steam. Finally, the actual lifting height of the floating plate 33 in the entire adjustment test system 7 is obtained with the help of the distance measuring module 16 at the top.

[0028] In this embodiment, the reflux mechanism 6 includes a surrounding plate 37, a reflux channel 39 and a diffuser 25. A support column 34 is inserted at the bottom of the fluidized steam distribution plate 1, a bottom plate 35 is welded to the bottom of the support column 34, a blocking plate 36 is welded to the bottom of the side of the fluidized steam distribution plate 1, the surrounding plate 37 is embedded between the fluidized steam distribution plate 1 and the bottom plate 35, and a docking hole 38 is provided on the inner wall of the surrounding plate 37. A reflux channel 39 is welded to the top of the surrounding plate 37, a diffuser 25 is integrally formed on the top of the reflux channel 39, a conical plate 26 is integrally formed on the top of the diffuser 25, a reflux cavity 27 is provided on the inner side of the diffuser 25, a nozzle 28 is provided at the bottom of the reflux cavity 27, and the ends of the conical plate 26 and the diffuser 25 are both welded and fixed to the surface of the transmission sleeve 22. The sinking material can be recycled and reused. After entering the fluidized steam distribution plate 1 at the bottom, the reflux mechanism 6 can collect the material with the help of a portion of the separated high-pressure steam, and transport it toward the top again and discharge it back into the calciner. This process is triggered by the automated drive control unit 4, thereby extending the maintenance cycle of the calciner.

[0029] Specifically, after some materials are fluidized and blown up through the fluidized steam distribution plate 1, a small amount of material will fall into the inside of the fluidized steam distribution plate 1. Since the transmission sleeve 22 will also drive the bottom enclosure 37 to rotate with the help of the diffuser plate 25, the conical plate 26, and the reflux channel 39, the enclosure 37 is aligned with the side of the fluidized steam distribution plate 1 through the inner docking interface. Then, the material inside the fluidized steam distribution plate 1 can be blown directly into the docking hole 38 with the help of the injected high-temperature steam, and finally ejected downward from the nozzle 28 to the surface of the fluidized steam distribution plate 1 along the reflux channel 39 and the reflux cavity 27.

[0030] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic control device for a steam fluidized calciner, comprising an automatic control device body and a fluidized steam distribution plate (1), characterized in that: The main body of the automatic control device comprises a drive control unit (4), a transmission mechanism (5), a reflux mechanism (6) and an adjustment and testing system (7); the fluidized steam distribution plate (1) is mounted on the inner bottom of the calciner; the drive control unit (4) is mounted on the top of the calciner; a mounting plate (8) is integrally formed at the bottom of the drive control unit (4); the bottom of the mounting plate (8) is screwed onto the calciner housing; a drive mechanism (5) is mounted on one side of the drive control unit (4); a drive sleeve (22) is integrally formed at the bottom of the drive mechanism (5); a reflux mechanism (6) is welded to the side of the drive sleeve (22); a shroud (37) is welded to the bottom of the reflux mechanism (6); the shroud (37) is sleeved on the side of the fluidized steam distribution plate (1); a steam pipe (2) is connected to the bottom of the fluidized steam distribution plate (1); an air pump (3) is connected to one end of the steam pipe (2); and the steam pipe (2) is communicated with the internal cavity of the fluidized steam distribution plate (1).

2. The automatic control device for a steam fluidized bed calciner according to claim 1, characterized in that: The drive control unit (4) comprises a motor (10), a transmission box (11) and a drive sleeve (14); a support plate (9) is welded to the top of the transmission box (11); a column (12) is inserted on the top of the support plate (9); a top plate (13) is welded to the top of the column (12); and a distance measurement module (16) and an infrared temperature measurement module (17) are screwed to the end of the top plate (13).

3. The automatic control device for a steam fluidized calciner according to claim 2, characterized in that: The motor (10) is screwed to the top of the transmission box (11); a notch is provided on the side of the transmission box (11); a gear (15) is welded to the side of the drive sleeve (14); and the gear (15) is inserted into the transmission box (11) from the notch on the side of the transmission box (11).

4. The automatic control device for a steam fluidized bed calciner according to claim 2, characterized in that: Therefore, the transmission mechanism (5) comprises a transmission sleeve (22) and a heat conducting plate (19), wherein the transmission sleeve (22) is integrally formed at the end of the driving sleeve (14), a plug-in interface (18) is provided on the side of the driving sleeve (14), and a heat conducting plate (19) is embedded inside the plug-in interface (18).

5. The automatic control device for a steam fluidized bed calciner according to claim 4, characterized in that: A partition plate (20) is welded to one end of the heat conducting plate (19), the partition plate (20) is mounted on the inner wall of the driving sleeve (14), and a temperature measuring plate (21) is integrally formed at the end of the heat conducting plate (19).

6. The automatic control device for a steam fluidized bed calciner according to claim 5, characterized in that: The number of the heat conducting plates (19) is four, and each heat conducting plate (19) is inserted at different angles and heights outside the driving sleeve (14), and the infrared temperature measuring module (17) irradiates vertically downward onto the surface of the temperature measuring plate (21).

7. The automatic control device for a steam fluidized bed calciner according to claim 4, characterized in that: An inner convex ring (23) is welded on the inner wall of the transmission sleeve (22), and a retaining groove (24) is provided on the inner wall of the inner convex ring (23). The adjustment test system (7) comprises a driven shaft (29), a floating plate (33) and a linkage plate (30). The linkage plate (30) is welded on the top of the driven shaft (29), and a reflective sheet (31) is mounted on the surface of the linkage plate (30).

8. The automatic control device for a steam fluidized bed calciner according to claim 7, characterized in that: A plug-in block (32) is integrally formed on the side of the linkage plate (30), and the plug-in block (32) is used to be embedded in the interior of the card slot (24). A floating plate (33) is installed at the bottom end of the driven shaft (29), and the floating plate (33) is used to press on the surface of the fluidized steam distribution plate (1). The distance measurement module (16) irradiates the surface of the reflective sheet (31) vertically downward through a laser beam.

9. The automatic control device for a steam fluidized calciner according to claim 7, characterized in that: The reflux mechanism (6) comprises a surrounding plate (37), a reflux channel (39) and a diffuser plate (25); a support column (34) is inserted into the bottom of the fluidized steam distribution plate (1); a bottom plate (35) is welded to the bottom of the support column (34); a sealing plate (36) is welded to the bottom of the side of the fluidized steam distribution plate (1); the surrounding plate (37) is embedded between the fluidized steam distribution plate (1) and the bottom plate (35); and a docking hole (38) is provided on the inner wall of the surrounding plate (37).

10. The automatic control device for a steam fluidized calciner according to claim 9, characterized in that: A reflow channel (39) is welded to the top of the enclosure (37), a diffuser plate (25) is integrally formed on the top of the reflow channel (39), a conical plate (26) is integrally formed on the top of the diffuser plate (25), a reflow cavity (27) is provided on the inner side of the diffuser plate (25), a nozzle (28) is provided at the bottom of the reflow cavity (27), and ends of the conical plate (26) and the diffuser plate (25) are both welded and fixed to the surface of the transmission sleeve (22).

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