An automatic control device for a steam fluidized calciner

Abstract

The present invention provides an automatic control device for a steam fluidized calciner, which relates to the technical field of automatic control. It includes a drive control unit, a transmission mechanism, a reflux mechanism, and an adjustment and test system. The fluidizing steam distribution plate is installed at the inner bottom of the calciner. The drive control unit is mounted at the top of the calciner, and a mounting plate is integrally formed at the bottom of the drive control unit. The bottom of the mounting plate is screwed onto the shell of the calciner. An automatic control device for a steam fluidized calciner is provided to solve the problems raised in the above background technology. The present invention can test the clogging device of the fluidizing steam distribution plate at the bottom and obtain more comprehensive data on the steam ejection state, 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, and has the effect of being able to recycle and reuse the sunken material part.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic control, and particularly to an automatic control device for a steam fluidized calciner. Background Technique

[0002] A steam fluidized calciner is an efficient heat treatment device, mainly used for processes such as calcination, drying, and decomposition of powdery or granular materials. It passes high-temperature steam through a fluidizing steam distribution plate at the bottom, causing the material to suspend in the fluidized bed and form a fluid-like state, achieving full gas-solid contact. The steam directly exchanges heat with the material, with uniform and fast heat transfer and lower energy consumption than traditional calcination methods. Current steam fluidized 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 mounted on the steam fluidized calciner only detects the calcination temperature of the internal material through an in-built temperature sensor and then controls the temperature of the externally injected steam. However, since the fluidizing steam distribution plate is in the bottom area and the temperature at different heights inside the calciner is different, it is difficult for a conventional regulation system to directly and flexibly collect the average temperature within a plane at different heights, and the data collection is not accurate enough. As a result, the reliability of the subsequent control process is reduced. On the other hand, materials with different quantities and specifications have different requirements for the pressure of the injected steam, and the fluidizing steam distribution plate at the bottom will also become blocked after long-term use. The conventional control device cannot automatically and effectively adjust the subsequent steam pressure according to the usage state of the fluidizing steam distribution plate, thus increasing the probability of blockage. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an automatic control device for a steam fluidized calciner to solve the problems raised in the above background technique. The present invention can test the blockage device of the fluidizing steam distribution plate at the bottom and obtain more comprehensive data on the steam ejection state, thereby more effectively regulating 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, and has the effect of recycling the sunken material part.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions: An automatic control device for a steam fluidized calciner, comprising an automatic control device body and a fluidized steam distribution plate. The automatic control device body includes a drive control unit, a transmission mechanism, a reflux mechanism, and an adjustment and testing system. The fluidized steam distribution plate is installed at the inner bottom of the calciner. The drive control unit is mounted on the top of the calciner, and a mounting plate is integrally formed at the bottom of the drive control unit. The bottom of the mounting plate is screwed to the calciner 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 retaining plate is welded to the bottom of the reflux mechanism. The retaining 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 pipeline. One end of the steam pipeline is connected to an air pump. The steam pipeline is communicated with the internal cavity of the fluidized steam distribution plate.

[0006] Further, the drive control unit includes a motor, a transmission box, and a drive sleeve. A support plate is welded to the top of the transmission box. A column is inserted into the top of the support plate. The top of the column is welded to a top plate. A distance measuring module and an infrared temperature measuring module are screwed to the end of the top plate.

[0007] Further, the motor is screwed to the top of the transmission box. A notch is provided on the side of the transmission box. A gear is sleeved and welded to the side of the drive sleeve. The gear penetrates into the interior of the transmission box through the notch on the side of the transmission box.

[0008] Further, the transmission mechanism includes a transmission sleeve and a heat conducting plate. The transmission sleeve is integrally formed at the end of the drive sleeve. An insertion port is provided on the side of the drive sleeve. The heat conducting plate is embedded in the interior of the insertion port.

[0009] Further, a partition plate is welded to one end of the heat conducting plate. The partition plate is installed on the inner wall of the drive sleeve. A temperature measuring plate is integrally formed at the end of the heat conducting plate.

[0010] Further, the number of the heat conducting plates is four, and each heat conducting plate is inserted at different angles and different heights on the outside of the drive sleeve. The infrared temperature measuring module irradiates vertically downward onto the surface of the temperature measuring plate.

[0011] Further, an inner convex ring is welded to the inner wall of the transmission sleeve. A clamping groove is provided on the inner wall of the inner convex ring. The adjustment and testing system includes a driven shaft, a floating plate, and a linkage plate. A linkage plate is welded to the top of the driven shaft. A reflective sheet is attached to the surface of the linkage plate.

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

[0013] Further, the reflux mechanism includes a surrounding plate, a reflux channel and a diffusion plate. A support column is inserted at the bottom of the fluidized steam distribution plate. The bottom of the support column is welded to a bottom plate. A sealing plate is welded to the bottom side of the fluidized steam distribution plate. The surrounding plate is embedded between the fluidized steam distribution plate and the bottom plate. A docking hole is formed on the inner wall of the surrounding plate.

[0014] Further, a reflux channel is welded to the top of the surrounding plate. A diffusion plate is integrally formed at the top of the reflux channel. A conical plate is integrally formed at the top of the diffusion plate. A reflux cavity is formed inside the diffusion plate. A nozzle is formed at the bottom of the reflux cavity. The ends of the conical plate and the diffusion plate are welded and fixed to the surface of the transmission sleeve.

[0015] Advantages of the present invention:

[0016] 1. The automatic control device of the steam fluidized calciner is equipped with an adjustment and test system on the internal fluidized steam distribution plate and is linked and controlled by the driving control unit at the top, so that it can test the clogging device of the fluidized steam distribution plate at the bottom and obtain more comprehensive steam ejection state data, which can be detected in time when the steam pressure is too low or too high, thereby making the subsequent regulation of the steam pressure more effective.

[0017] 2. The automatic control device of the steam fluidized calciner can obtain temperature data at different height planes during the calcination process through the driving control unit cooperating with multiple heat conduction plates carried in the transmission mechanism, and the temperature obtained at each height can reflect the overall temperature situation within the height plane, avoiding the problem that the temperature measurement position is always fixed and cannot accurately reflect the overall temperature, and it is also convenient to adjust the steam temperature.

[0018] 3. The automatic control device of the steam fluidized calciner can recycle the sunken material part. After the sunken material part enters the fluidized steam distribution plate at the bottom, with the rotation of the reflux mechanism, a part of the high-pressure steam can be used to collect the material part and convey it back to the top and discharge it again into the inside of the calciner. This process is triggered by the automatic driving control unit, extending the maintenance and repair cycle of the calciner. Description of the drawings

[0019] Figure 1This is a schematic structural diagram of the outer shape of an automatic control device for a steam fluidized calciner according to the present invention;

[0020] Figure 2 This is a schematic structural diagram of the drive control unit part of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the transmission mechanism part of the present invention;

[0022] Figure 4 This is an internal cross-sectional view of the transmission sleeve of the present invention;

[0023] Figure 5 This is a structural diagram of the adjustment and test system part of the present invention;

[0024] Figure 6 This is a connection diagram of the fluidized steam plate of the present invention;

[0025] Figure 7 This is a schematic structural diagram of the reflux mechanism part of the present invention;

[0026] 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 and test system; 8, mounting plate; 9, support plate; 10, motor; 11, transmission box; 12, column; 13, top plate; 14, drive sleeve; 15, gear; 16, ranging module; 17, infrared temperature measurement module; 18, plug interface; 19, heat conduction plate; 20, partition plate; 21, temperature measurement plate; 22, transmission sleeve; 23, inner convex ring; 24, card slot; 25, diffusion plate; 26, conical plate; 27, reflux cavity; 28, nozzle; 29, driven shaft; 30, linkage plate; 31, reflector; 32, plugging block; 33, floating plate; 34, support column; 35, bottom plate; 36, sealing plate; 37, enclosing plate; 38, docking hole; 39, reflux channel. Detailed implementation manners

[0027] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0028] Please refer to Figures 1 to 7, the present invention provides the following technical solution: An automatic control device for a steam fluidized calciner, including an automatic control device body and a fluidizing steam distribution plate 1. The automatic control device body includes a drive control unit 4, a transmission mechanism 5, a reflux mechanism 6, and an adjustment and testing system 7. The fluidizing steam distribution plate 1 is installed at the inner bottom of the calciner. The drive control unit 4 is mounted on the top of the calciner, and 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 to the calciner 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 retaining plate 37 is welded to the bottom of the reflux mechanism 6. The retaining plate 37 is sleeved on the side of the fluidizing steam distribution plate 1. The bottom of the fluidizing steam distribution plate 1 is connected to a steam pipe 2. One end of the steam pipe 2 is connected to an air pump 3. The steam pipe 2 is communicated with the internal cavity of the fluidizing steam distribution plate 1. This automatic control device automatically regulates the injection pressure and temperature of the injected steam based on the steam ejection pressure at the inner bottom of the calciner and the temperature data at different heights.

[0029] When the present invention operates, the drive control unit 4 built on the top of the calciner drives the intermediate transmission mechanism 5 to perform rotational motion. During the rotation of the transmission mechanism 5, the temperature states of different height regions inside the calciner are monitored and processed by the infrared temperature measurement module 17 at the top. When it is monitored that the temperatures at all heights inside the calciner are relatively low, the injection steam temperature is directly controlled to increase. When it is monitored that the temperatures at all heights inside the calciner are relatively high, the injection steam temperature is directly controlled to decrease. When it is monitored that the temperature at the bottom end inside the calciner is high while the temperature at the top end is low, the injection steam temperature is controlled to remain unchanged while the steam pressure is increased, so that the high-temperature gas at the bottom is further fully mixed with the top. When it is monitored that the temperature at the bottom end inside the calciner is low while the temperature at the top end is high, the injection steam temperature is controlled to remain unchanged while the steam pressure is decreased. Finally, the regulation process of the steam is realized through the collected temperature data. At the same time, it also cooperates with the adjustment and testing system 7 inside to measure the average pressure of the bottom-layer steam injection, which is used as the basis for further regulating the injected steam to achieve the fluidization effect. The ranging module 16 and the infrared temperature measurement module 17 used herein are both existing mature technologies and do not fall within the protection scope of the present invention. Therefore, the detailed contents of their internal structures, parameters, and circuit connection structures are not elaborated herein.

[0030] In this embodiment, the drive control unit 4 includes a motor 10, a transmission case 11, and a drive sleeve 14. A support plate 9 is welded to the top of the transmission case 11. A column 12 is inserted into the top of the support plate 9. The top of the column 12 is welded to a top plate 13. A ranging module 16 and an infrared temperature measurement module 17 are screwed to the end of the top plate 13. The motor 10 is screwed to the top of the transmission case 11. A notch is formed on the side of the transmission case 11. A gear 15 is sleeved and welded to the side of the drive sleeve 14. The gear 15 penetrates into the interior of the transmission case 11 through the notch on the side of the transmission case 11.

[0031] Specifically, after the motor 10 is started, the output shaft of the motor 10 drives the rotation of the gear 15 group structure inside the transmission case 11, and then drives the gear 15 on the drive sleeve 14 to perform synchronous rotational movement. After the drive sleeve 14 drives the transmission mechanism 5 and the adjustment and test system 7 at the bottom to operate, the temperature state of different height regions inside the calciner can be monitored, and the detection purpose of the initial pressure data of the steam ejected from the fluidized steam distribution plate 1 can be achieved. The ranging module 16 and the infrared temperature measurement module 17 installed on the top plate 13 irradiate towards the interior of the drive sleeve 14 to complete the acquisition process of the above monitoring data.

[0032] In this embodiment, the transmission mechanism 5 includes a transmission sleeve 22 and a heat conduction plate 19. The transmission sleeve 22 is integrally formed at the end of the drive sleeve 14. An insertion port 18 is formed on the side of the drive sleeve 14. The heat conduction plate 19 is embedded in the interior of the insertion port 18. One end of the heat conduction plate 19 is welded to a partition plate 20. The partition plate 20 is installed on the inner wall of the drive sleeve 14. A temperature measurement plate 21 is integrally formed at the end of the heat conduction plate 19. The number of the heat conduction plates 19 is four, and each heat conduction plate 19 is inserted at different angles and different heights on the outside of the drive sleeve 14. The infrared temperature measurement module 17 vertically irradiates the surface of the temperature measurement plate 21. By cooperating the drive control unit 4 with the multiple heat conduction plates 19 carried in the transmission mechanism 5, the 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 within the height plane, avoiding the problem that the temperature measurement position is always fixed and cannot accurately reflect the overall temperature, and it is also convenient to adjust the steam temperature.

[0033] Specifically, through the rotation of the transmission mechanism 5, each heat conduction plate 19 on the side will be directly driven to rotate. On the one hand, the heat conduction plate 19 provides a basic stirring effect on the material part inside the calciner, and at the same time, it will utilize the high thermal conductivity of the heat conduction plate 19 itself to transfer the temperature to the temperature measuring plate 21 on the inside. The infrared temperature measuring module 17 at the fixed position on the top measures and collects the temperature on each temperature measuring plate 21 in turn during the rotational movement of the drive sleeve 14, so as to achieve the purpose of comprehensively collecting the actual temperature on different height planes.

[0034] In this embodiment, an inner convex ring 23 is welded on the inner wall of the transmission sleeve 22, and a clamping groove 24 is formed on the inner wall of the inner convex ring 23. The adjustment and test system 7 includes a driven shaft 29, a floating plate 33 and a linkage plate 30. A linkage plate 30 is welded on the top of the driven shaft 29, and a reflective sheet 31 is attached to the surface of the linkage plate 30. An insertion block 32 is integrally formed on the side of the linkage plate 30, and the insertion block 32 is used to be embedded into the inside of the clamping groove 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 ranging module 16 irradiates vertically downward onto the surface of the reflective sheet 31 through a laser beam. The adjustment and test system 7 is mounted on the internal fluidized steam distribution plate 1 and is linked and controlled by the drive control unit 4 at the top, so that it can test the blocking device of the fluidized steam distribution plate 1 at the bottom and obtain more comprehensive steam ejection state data, which can be detected in time when the steam pressure is too low or too high, so as to make the subsequent regulation of the steam pressure more effective.

[0035] Specifically, the floating plate 33 at the bottom presses on the surface of the fluidized steam distribution plate 1. Therefore, when the air pump 3 at the bottom injects high-temperature steam into the inside of the fluidized steam distribution plate 1 along the steam pipeline 2 and blows it upward through the pores on the fluidized steam distribution plate 1, it will also blow up the floating plate 33 pressing on the surface of the fluidized steam distribution plate 1 upward, and the steam pressure situation corresponding to the current 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 and test system 7 to rotate through the cooperation of the inner convex ring 23, the clamping groove 24, the linkage plate 30 and the insertion block 32, the entire floating plate 33 can always rotate, and it will not affect the lifting movement of the floating plate 33 being blown upward by the high-temperature steam. Finally, the actual lifting height of the floating plate 33 in the entire adjustment and test system 7 is obtained by means of the ranging module 16 at the top.

[0036] In this embodiment, the reflux mechanism 6 includes a surrounding plate 37, a reflux channel 39, and a diffusion plate 25. Support columns 34 are inserted at the bottom of the fluidized steam distribution plate 1. The bottom of the support columns 34 is welded to a bottom plate 35. A sealing plate 36 is welded to the bottom 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. A docking hole 38 is formed in the inner wall of the surrounding plate 37. A reflux channel 39 is welded to the top of the surrounding plate 37. A diffusion plate 25 is integrally formed at the top of the reflux channel 39. A conical plate 26 is integrally formed at the top of the diffusion plate 25. A reflux cavity 27 is formed inside the diffusion plate 25. A spray port 28 is formed at the bottom of the reflux cavity 27. The ends of the conical plate 26 and the diffusion plate 25 are welded and fixed to the surface of the transmission sleeve 22. For the effect that the sunken material part can be recycled, after this part of the sunken material enters the fluidized steam distribution plate 1 at the bottom, with the rotation of the reflux mechanism 6, a part of the high-pressure steam can be used to collect this part of the material, and then it is conveyed upward again and discharged back into the internal of the calciner. This process is triggered by the automated drive control unit 4, which extends the maintenance and repair cycle of the calciner.

[0037] Specifically, after some materials are fluidized and blown up by the fluidized steam distribution plate 1, a small amount of materials will also fall into the inside of the fluidized steam distribution plate 1. Since the transmission sleeve 22 will also drive the surrounding plate 37 at the bottom to rotate by means of the diffusion plate 25, the conical plate 26, and the reflux channel 39 at the same time. Therefore, after the surrounding plate 37 is aligned with the side of the fluidized steam distribution plate 1 through the inner docking port, the materials inside the fluidized steam distribution plate 1 can be directly blown into the docking hole 38 by injecting high-temperature steam, and finally sprayed downward from the spray port 28 along the reflux channel 39 and the reflux cavity 27 to the surface of the fluidized steam distribution plate 1.

[0038] The foregoing shows and describes the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0039] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments 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 test 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 circumference plate (37) is welded to the bottom of the reflux mechanism (6); the circumference plate (37) is sleeved on the side of the fluidized steam distribution plate (1); and a steam pipeline (22) is connected to the bottom of the fluidized steam distribution plate (1). 2), one end of the steam pipe (2) is connected to an air pump (3), the steam pipe (2) is connected to the internal cavity of the fluidized steam distribution plate (1), 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), a distance measurement module (16) and an infrared temperature measurement module (17) are screwed to the end of the top plate (13), the transmission mechanism (5) comprises a transmission sleeve (22) and a heat conduction plate (19), the transmission sleeve (22) is integrally formed at the end of the drive sleeve (14), a plug interface (18) is provided on the side of the drive sleeve (14), and a heat conduction plate (19) is embedded in the plug interface (18).

2. The automatic control device for a steam fluidized bed calciner according to claim 1, 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).

3. The automatic control device for a steam fluidized bed calciner according to claim 1, 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).

4. The automatic control device for a steam fluidized calciner according to claim 3, 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).

5. The automatic control device for a steam fluidized bed calciner according to claim 1, 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).

6. The automatic control device for a steam fluidized calciner according to claim 5, 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.

7. The automatic control device for a steam fluidized calciner according to claim 5, 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).

8. The automatic control device for a steam fluidized bed calciner according to claim 7, 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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