A gypsum calciner

Abstract

A gypsum calcining machine comprises a body having a calcining chamber and an air supply chamber, the calcining chamber being located above the air supply chamber, a communication section being provided between the calcining chamber and the air supply chamber, and a second opening being provided in a lower portion of the air supply chamber; an air distribution plate being installed in the communication section and having an open position and a closed position, the air distribution plate being configured to close the communication section when in the closed position and open the communication section when in the open position; and a discharge device being provided in the second opening and configured to close the second opening or discharge impurities. When solid impurities are deposited on the air distribution plate, the calcined gypsum raw material in the calcining chamber is first discharged, then the air distribution plate is controlled to move from the closed position to the open position to open the communication section, so that the solid impurities on the air distribution plate fall into the air supply chamber under the action of gravity, then the discharge device is controlled to discharge the solid impurities in the air supply chamber, the air distribution plate is controlled to move from the open position to the closed position to close the communication section, and after the solid impurities are completely discharged, the discharge device is controlled to close the second opening, so that the gypsum calcining machine can be started and operated normally again. The process of cleaning the solid impurities is time-saving, labor-saving and easy.

Description

Technical Field

[0001] This invention relates to the field of gypsum board production technology, and more specifically, to a gypsum calcination machine. Background Technology

[0002] The fluidized bed calciner (i.e., gypsum calciner) includes a main body with a calcination chamber, a cover (i.e., bottom cone) with an air supply chamber, an air distribution plate, and an air supply device. The cover is installed at the lower part of the main body, and the calcination chamber is connected to the air supply chamber. The air distribution plate is located at the position where the calcination chamber and the air supply chamber are connected and separates the calcination chamber and the air supply chamber. The air distribution plate has air passage holes that connect the calcination chamber and the air supply chamber. The upper part of the calcination chamber is provided with a feed inlet and a discharge outlet.

[0003] A gypsum calciner is used to calcine gypsum raw materials. The gypsum raw materials are continuously fed into the calcining chamber through the feed inlet. An air supply device supplies air to the air supply chamber. The air jet enters the calcining chamber through the air passage, which fluidizes the gypsum raw materials in the calcining chamber and allows the gypsum raw materials to continuously overflow and be discharged from the discharge outlet of the calcining chamber.

[0004] Because the vent holes are small and the calcined gypsum raw material is discharged as an overflow, solid impurities in the gypsum raw material easily deposit on the air distribution plate, preventing the airflow from entering the calcination chamber through the vent holes and affecting the fluidization of the gypsum raw material. The existing solution is:

[0005] 1) Remove the cover and pour out the impurities on the air distribution plate; 2) Set cleaning holes on the main body perimeter of the upper part of the air distribution plate, open the cleaning holes, and clean the impurities; Both of the above solutions have the problems of being time-consuming, labor-intensive, and difficult. Summary of the Invention

[0006] This invention provides a gypsum calcination machine, which is time-saving, labor-saving, and easy to clean solid impurities.

[0007] The gypsum calcining machine provided in this embodiment of the invention includes: a body having a calcination chamber and an air supply chamber, the calcination chamber being located above the air supply chamber, a connecting section being provided between the calcination chamber and the air supply chamber, and a second opening being provided at the lower part of the air supply chamber; an air distribution plate being installed in the connecting section and having an open position and a closed position, the air distribution plate being configured to close the connecting section when it is in the closed position and to open the connecting section when it is in the open position; and a discharge device being provided at the second opening and configured to close the second opening or discharge impurities.

[0008] In some exemplary embodiments, the gypsum calcining machine further includes: an air supply device configured to supply air to the air supply chamber, the air distribution plate having air passage holes configured to connect the calcining chamber and the air supply chamber when the air distribution plate is in a closed position; and an air equalization device disposed in the air supply chamber, the air equalization device and the chamber wall of the air supply chamber having a passage gap, the air outlet of the air supply device being located in the air supply chamber and facing downward toward the air equalization device, the air equalization device being configured to uniformly disperse the air stream blowing from the air outlet of the air supply device toward the air equalization device.

[0009] In some exemplary embodiments, the air distribution device includes a first conical annular wall that gradually widens from top to bottom, and the wall of the air supply chamber includes a second conical annular wall that gradually widens from bottom to top, with the first and second conical annular walls facing each other.

[0010] In some exemplary embodiments, the gypsum calcining machine further includes: a plurality of support legs, circumferentially spaced at the second opening; the air distribution device is connected to the cavity wall of the air supply chamber through the plurality of support legs; the spacing includes the spacing between adjacent support legs.

[0011] In some exemplary embodiments, the air supply device includes an air supply pipe that passes through the cavity wall of the air supply chamber. One end of the air supply pipe that extends into the interior of the air supply chamber has an air outlet, and the air outlet of the air supply pipe faces downward and is directly opposite the air distribution device.

[0012] In some exemplary embodiments, the unloading device includes an airlock unloading device configured to close the second opening based on a stop and to discharge impurities based on operation.

[0013] In some exemplary embodiments, the body includes: a main body having a calcination chamber, the lower part of the main body having an installation port, and the upper part having a feed port and a discharge port; and a cover having an air supply chamber, the upper part of the cover having a first opening and the lower part having a second opening, the installation port being connected to the first opening and forming the connecting section.

[0014] In some exemplary embodiments, the gypsum calcining machine further includes: a first support member and a second support member. When the air distribution plate is in the closed position, the first support member and the second support member are located below the air distribution plate and support both ends of the air distribution plate upwards in a first horizontal direction. The second support member has a supporting position and a clearance position, with the supporting position located above the clearance position. When the air distribution plate is in the closed position and the second support member moves from the supporting position to the clearance position, the air distribution plate can move forward from the closed position to the open position. When the second support member is in the clearance position and the air distribution plate moves backwards from the open position to the closed position, one end of the air distribution plate abuts downwards against the upper end of the first support member, and the second support member moves from the clearance position to the supporting position to support the other end of the air distribution plate.

[0015] In some exemplary embodiments, the air distribution plate, the first support member, and the second support member include multiple sets arranged sequentially in the first horizontal direction. The second support member and the air distribution plate can be installed to swing up and down. The hinge axis of the air distribution plate and the hinge axis of the second support member are both arranged in a second horizontal direction perpendicular to the first horizontal direction. The multiple air distribution plates are all in a closed position and jointly close the connecting section. Wherein: when the air distribution plate is in the closed position, the air distribution plate is in a horizontal state; when the air distribution plate is in the open position, the air distribution plate is in a vertical state; when the second support member is in a supporting position or an abdication position, the second support member is in a vertical state.

[0016] In some exemplary embodiments, a plurality of the air distribution plates are in a closed position and a plurality of the second support members are in a supported position: a plurality of the first support members and a plurality of the second support members are alternately arranged in the first horizontal direction, each air distribution plate has a stepped structure with the stepped surface facing upward at one end corresponding to the second support member it cooperates with, and each air distribution plate has a stepped structure with the stepped surface facing downward at one end corresponding to the first support member it cooperates with, and the adjacent ends of adjacent air distribution plates are sealed and overlapped by the stepped structure, and the stepped structure at both ends is also sealed and overlapped with the peripheral wall of the connecting section.

[0017] In some exemplary embodiments, the air distribution plate is in a closed position: the hinge axis of the air distribution plate is located on the lower side of the air distribution plate and is offset from the center of the air distribution plate in the first horizontal direction; the second support member is in a supporting position: the hinge axis of the second support member is located at the lower end of the second support member; the second support member is in a clearance position: the hinge axis of the second support member is located at the upper end of the second support member.

[0018] In some exemplary embodiments, the gypsum calcining machine further includes: a first driving device, which is connected to the air distribution plate and configured to drive the air distribution plate to move in a forward or reverse direction; a first limiting device, which is configured to limit the air distribution plate based on the air distribution plate moving to a closed position and an open position; a second driving device, which is connected to the second support member and configured to drive the second support member to move upward or downward; and a second limiting device, which is configured to limit the second support member based on the second support member moving to a supporting position and an avoidance position.

[0019] The gypsum calcining machine proposed in this embodiment of the invention, when solid impurities are deposited on the air distribution plate, first discharges the calcined gypsum raw material from the calcination chamber, and then controls the air distribution plate to move from the closed position to the open position to open the connecting section, so that the solid impurities on the air distribution plate fall into the air supply chamber under the action of gravity. Then, the unloading device is controlled to discharge the solid impurities from the air supply chamber and the air distribution plate is controlled to move from the open position to the closed position to close the connecting section. After the solid impurities are completely discharged, the unloading device is controlled to close the second opening, so that the gypsum calcining machine can be restarted and operated normally again. This gypsum calcining machine saves time and effort, is less difficult, and has better practicality in cleaning solid impurities.

[0020] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0022] Figure 1 This is a cross-sectional structural schematic diagram of the process of cleaning solid impurities using a gypsum calciner as described in some embodiments;

[0023] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0024] Figure 3 for Figure 1 Enlarged structural diagram of section B;

[0025] Figure 4 for Figure 1 A cross-sectional structural diagram showing the operation of a gypsum calcining machine;

[0026] Figure 5 for Figure 4A schematic diagram of the enlarged structure of part C in the diagram;

[0027] Figure 6 for Figure 4 A schematic diagram of the enlarged structure of part D in the diagram;

[0028] Figure 7 for Figure 6 A magnified structural diagram of part E in the diagram.

[0029] The correspondence between the reference numerals and the component names is as follows:

[0030] 100 Main body, 110 calcination chamber, 120 mounting port, 200 cover, 210 air supply chamber, 220 second opening, 230 through gap, 240 first opening, 300 air distribution plate, 310 air passage hole, 320 hinge shaft, 400 air supply device, 500 unloading device, 600 air distribution device, 700 support leg, 810 first support member, 820 second support member, 821 hinge shaft. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0032] like Figures 1 to 7 As shown, the gypsum calcining machine provided in this embodiment of the invention includes: a body having a calcination chamber 110 and an air supply chamber 210, the calcination chamber 110 being located above the air supply chamber 210, a connecting section being provided between the calcination chamber 110 and the air supply chamber 210, and a second opening 220 being provided at the lower part of the air supply chamber 210; an air distribution plate 300, the air distribution plate 300 being installed in the connecting section and having an open position and a closed position, the air distribution plate 300 being configured to close the connecting section when it is in the closed position and open the connecting section when it is in the open position; and a discharge device 500, the discharge device 500 being provided in the second opening 220, the discharge device 500 being configured to close the second opening 220 or discharge impurities.

[0033] When solid impurities are deposited on the air distribution plate 300, the calcined gypsum raw material in the calcination chamber 110 is first discharged. Then, the air distribution plate 300 is controlled to move from the closed position to the open position to open the connecting section, so that the solid impurities on the air distribution plate 300 enter the air supply chamber 210 from the connecting section under the action of gravity. Then, the unloading device 500 is controlled to discharge the solid impurities that have fallen into the air supply chamber 210, and the air distribution plate 300 is controlled to move from the open position to the closed position to close the connecting section. After the solid impurities are completely discharged, the unloading device 500 is controlled to close the second opening 220, so that the gypsum calciner can be started and run normally again. This gypsum calciner saves time and effort, is less difficult, and has better practicality in cleaning solid impurities.

[0034] Furthermore, such as Figure 1 and Figure 4 As shown, the gypsum calcining machine also includes: an air supply device 400, configured to supply air to the air supply chamber 210; an air distribution plate 300 having air passage holes 310, configured to connect the calcining chamber 110 and the air supply chamber 210 when the air distribution plate 300 is in the closed position. When the gypsum calcining machine is running, the air distribution plate 300 is in the closed position, and the air supply device 400 supplies air to the air supply chamber 210. The air stream in the air supply chamber 210 is blown into the calcining chamber 110 through the air passage holes 310, realizing the fluidization of the gypsum raw material in the calcining chamber 110. The air passage holes 310 include multiple holes dispersed (e.g., evenly distributed), and when the air distribution plate 300 is in the closed position, each air passage hole 310 has an upper diameter smaller than its lower diameter.

[0035] Furthermore, the gypsum calcining machine also includes: an air distribution device 600, which is located inside the air supply chamber 210. There is a passage gap 230 between the air distribution device 600 and the chamber wall of the air supply chamber 210. The air outlet of the air supply device 400 is located inside the air supply chamber 210 and faces downward toward the air distribution device 600. The air distribution device 600 is configured to evenly distribute the air stream blown from the air outlet of the air supply device 400 toward the air distribution device 600.

[0036] The air jets from the outlet of the self-supplying air device 400 are directed towards the air distribution device 600, which evenly disperses the air jets. This ensures that the air volume and pressure of the air jets entering the calcination chamber 110 through each air passage 310 are essentially the same, which improves the fluidization effect of the gypsum raw material in the calcination chamber 110. This results in better calcination and overflow discharge of the gypsum raw material. Furthermore, solid impurities falling into the air supply chamber 210 will pass through the interval 230 to reach the second opening 220, ensuring that the unloading device 500 can properly discharge solid impurities.

[0037] Furthermore, such as Figure 1 and Figure 4As shown, the air distribution device 600 includes a first conical ring wall that gradually widens from top to bottom, and the wall of the air supply chamber 210 includes a second conical ring wall that gradually widens from bottom to top. The first and second conical ring walls are opposite each other. The downward-blown air stream is evenly distributed by the first conical ring wall and then flows upward in the opposite direction from the second conical ring wall, which can better achieve that the air volume and air pressure of the air stream reaching each air passage 310 are basically the same.

[0038] It is possible that both the first and second conical ring walls are conical ring walls; or it is possible that both the first and second conical ring walls are regular pyramidal ring walls, such as regular triangular pyramidal ring walls, regular square pyramidal ring walls, or regular pentagonal pyramidal ring walls; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, and will not be elaborated here, and should all fall within the protection scope of this application.

[0039] In some embodiments, such as Figure 1 As shown, the gypsum calcining machine also includes: multiple support legs 700, which are circumferentially spaced at intervals around the second opening 220. An air distribution device 600 is connected to the wall of the air supply chamber 210 via the multiple support legs 700, with a spacing 230 between adjacent support legs 700. The multiple support legs 700 can be two, three, or four, etc. All of these configurations can achieve the purpose of this application, and their intent does not depart from the design concept of this invention. Further details are omitted here, and all should fall within the protection scope of this application.

[0040] In some embodiments, such as Figure 1 and Figure 4 As shown, the air supply device 400 includes an air supply pipe that extends from the outside of the air supply chamber 210 into the air supply chamber 210 and passes through the cavity wall of the air supply chamber 210. One end of the air supply pipe that extends into the air supply chamber 210 has an air outlet. The air outlet of the air supply pipe faces downward and is directly opposite the top of the air distribution device 600. In this way, the air distribution device 600 has a better effect on the uniform dispersion of the air stream blown from the air outlet of the air supply device 400.

[0041] In some embodiments, such as Figure 1 and Figure 4 As shown, the unloading device 500 is configured as an airlock unloading device. When the airlock unloading device stops, it closes the second opening 220. When the airlock unloading device is running, it discharges impurities (solid impurities) outward from the second opening 220.

[0042] In some embodiments, such as Figures 1 to 6As shown, the main body includes: a main body 100 having a calcination chamber 110, with an installation port 120 at the lower part of the main body 100, and a feed port and a discharge port at the upper part of the main body 100, all of which are connected to the calcination chamber 110; and a cover 200 having an air supply chamber 210, with a first opening 240 at the upper part and a second opening 220 at the lower part. The cover 200 is located below the main body 100 and is assembled with the main body 100. The installation port 120 and the first opening 240 are connected to form a connecting section. This design is more conducive to installing an air distribution plate 300 in the connecting section. The air distribution plate 300 can be installed in the installation port 120 or in the first opening 240.

[0043] When the gypsum calcining machine is running, gypsum raw materials are continuously fed into the calcining chamber 110 from the feed inlet of the main body 100. Air is supplied to the air supply chamber 210 from the air supply pipe. The air jets blown from the air outlet of the air supply device 400 are directed to the air distribution device 600. The air distribution device 600 evenly distributes the air jets, so that the air jets enter the calcining chamber 110 through each air passage 310. In this way, the air volume and air pressure of the air jets passing through each air passage 310 are basically the same, and the fluidization effect of the gypsum raw materials in the calcining chamber 110 is better. The fluidized gypsum raw materials after calcination overflow from the discharge port of the main body 100.

[0044] In some examples, such as Figures 1 to 6 As shown, the gypsum calcining machine also includes: a first support member 810 and a second support member 820. Based on the air distribution plate 300 being in the closed position, the first support member 810 and the second support member 820 are located below the air distribution plate 300 and support the air distribution plate 300 at both ends in the first horizontal direction c. The second support member 820 has a supporting position and a clearance position, with the supporting position located above the clearance position.

[0045] like Figures 4 to 6 As shown, when the air distribution plate 300 is in the closed position and the second support member 820 is in the supported position, as... Figures 1 to 3 As shown, when the second support member 820 moves from the supporting position to the avoidance position, the second support member 820 avoids the air distribution plate 300, and the air distribution plate 300 can move from the closed position to the open position; as Figures 1 to 3 As shown, when the second support member 820 is in the avoidance position and the air distribution plate 300 is in the open position, such as Figures 4 to 6As shown, the second support member 820 avoids the air distribution plate 300, causing the air distribution plate 300 to move in the opposite direction from the open position to the closed position. Then, one end of the air distribution plate 300 abuts against the upper end of the first support member 810. Then, the second support member 820 moves from the avoidance position to the support position to support the other end of the air distribution plate 300. At this time, both ends of the air distribution plate 300 are supported by the first support member 810 and the second support member 820 (that is, the air distribution plate 300 is fixed in the closed position). In this scheme, the structural strength of the two ends of the air distribution plate 300 is higher, and the two ends of the air distribution plate 300 are not easy to deform.

[0046] Alternatively, the second support member 820 can be installed vertically (not shown in this schematic diagram); or it can be, as... Figures 1 to 6 As shown, the second support member 820 can be installed by swinging up and down; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, so they will not be repeated here, and should all fall within the protection scope of this application.

[0047] In some embodiments, such as Figures 1 to 7 As shown, the air distribution plate 300, the first support member 810, and the second support member 820 are comprised of multiple sets arranged sequentially in the first horizontal direction c (e.g., left-right direction). Both the second support member 820 and the air distribution plate 300 can be installed by swinging up and down. The hinge shaft 320 of the air distribution plate 300 and the hinge shaft 821 of the second support member 820 are arranged along a second horizontal direction perpendicular to the first horizontal direction c (e.g., front-back direction). Multiple air distribution plates 300 are all in the closed position, collectively closing the connecting section. When removing impurities, multiple air distribution plates 300 can simultaneously move to the open position to remove and release solid impurities, or they can move to the open position sequentially to remove and release solid impurities. Specifically: when the air distribution plate 300 is in the closed position, it is horizontal; when the air distribution plate 300 is in the open position, it is vertical; when the second support member 820 is in the supporting position or the avoidance position, it is vertical.

[0048] like Figures 4 to 6 As shown, when the air distribution plate 300 is in the closed position and the second support member 820 is in the supported position, as... Figures 1 to 3 As shown, the second support member 820 swings downward from the supporting position to the avoidance position, thus avoiding the air distribution plate 300. The air distribution plate 300 can then swing forward from the closed position to the open position. Figures 1 to 3 As shown, when the second support member 820 is in the avoidance position and the air distribution plate 300 is in the open position, such as Figures 4 to 6As shown, the second support member 820 avoids the air distribution plate 300, allowing the air distribution plate 300 to swing back from the open position to the closed position. One end of the air distribution plate 300 then abuts against the upper end of the first support member 810. The second support member 820 then swings back from the avoidance position to the support position, supporting the other end of the air distribution plate 300. At this point, both ends of the air distribution plate 300 are supported by the upper ends of the first support member 810 and the upper ends of the second support member 820 (i.e., the air distribution plate 300 is fixed in the closed position). This design provides higher structural strength at both ends of the air distribution plate 300, making it less prone to deformation. Furthermore, the hinge shaft 320 of the air distribution plate 300 supports the area between its two ends, further reducing the likelihood of deformation in this area.

[0049] In some embodiments, such as Figures 4 to 7 As shown, based on the multiple air distribution plates 300 being in the closed position and the multiple second support members 820 being in the supporting position: the multiple first support members 810 and the multiple second support members 820 are alternately arranged in the first horizontal direction c, as follows: Figure 7 As shown, each air distribution plate 300 has an upward-facing stepped structure a at one end corresponding to the second support member 820 it mates with, and an downward-facing stepped structure b at one end corresponding to the first support member 810 it mates with. Adjacent ends of adjacent air distribution plates 300 are sealed and overlapped by the stepped structures, and the stepped structures at both ends are also sealed and overlapped with the peripheral wall of the connecting section. This can be, for example... Figure 6 As shown, the stepped structure b with the stepped surface facing downwards at both ends is sealed and overlapped with the corresponding first support member 810. The top of the first support member 810 is provided with a stepped structure a with the stepped surface facing upwards; as shown Figure 5 As shown, the stepped structure a with its stepped surface facing upwards at both ends is also sealed and overlapped with the peripheral wall of the connecting section, and a stepped structure b with its stepped surface facing downwards is correspondingly provided on the peripheral wall of the connecting section. Wherein, as... Figure 7 As shown, the two connecting surfaces of each step structure a are inclined upwards, and the two connecting surfaces of each step structure b are inclined downwards. The step surfaces abutting each other for a sealing fit can prevent air leakage at the joint, and the inclined surfaces ensure that the mating step structures a and b do not interfere with each other during the rotation of the air distribution plate 300.

[0050] like Figures 4 to 6 As shown, the air distribution plate 300 is in the closed position: the hinge shaft 320 of the air distribution plate 300 is located on the lower side of the air distribution plate 300 and is offset from the center of the air distribution plate 300 in the first horizontal direction c (towards the side where the corresponding first support member 810 is located), so as to realize that the air distribution plate 300 can reliably swing automatically under the action of gravity when it is opened. Figures 4 to 6As shown, the second support member 820 is in a supported position: the hinge shaft 821 of the second support member 820 is located at the lower end of the second support member 820; as Figures 1 to 3 As shown, the second support member 820 is in a clearance position: the hinge shaft 821 of the second support member 820 is located at the upper end of the second support member 820. Alternatively, the second conical ring wall can be a regular square pyramid ring wall, and the first opening 240 can be square. The first support member 810 and the second support member 820 can be configured as support plates. The first support member 810 can be fixed to the opening wall of the first opening 240 at both ends in the second horizontal direction, such as by welding. In this way, the first support member 810 can also play a role in equalizing airflow. Alternatively, as shown... Figures 1 to 6 As shown, the second support member 820 has the same shape as the first support member 810, and is hinged to the lower end of the adjacent first support member 810 via a hinge shaft. The second support member 820 is positioned so that it is vertically aligned with the adjacent first support member 810 when in the avoidance position. This arrangement of the second support member 820 simplifies the process and improves the avoidance effect. In the first horizontal direction: as shown... Figure 2 and Figure 5 As shown, the second support member 820 located at one end is hinged to the opening wall 240 of the first opening, as... Figure 3 and Figure 6 As shown, the first support member 820 located at the other end is configured as a support block, which is attached to and fixed on the opening wall 240 of the first opening and has a stepped structure a.

[0051] Furthermore, the gypsum calcining machine also includes: a first driving device (not shown in the figure), wherein the hinge shaft 320 of the air distribution plate 300 is fixed to the air distribution plate 300 by means of welding or other methods, the first driving device is connected to the hinge shaft 320 of the air distribution plate 300 in a transmission connection, and the first driving device is configured to drive the air distribution plate 300 to rotate in the forward direction and in the reverse direction (i.e., rotate); and a first limiting device (not shown in the figure), wherein the first limiting device is configured to limit the air distribution plate 300 when it moves to the closed position (ensuring that the air distribution plate 300 is limited when it moves to the closed position and is in a horizontal state), and the first limiting device is also configured to limit the air distribution plate 300 when it moves to the open position (ensuring that the air distribution plate 300 moves to the open position). The system includes: a first support member 820 (limited when in a vertical position); a second drive device (not shown in the figure), which is connected to the second support member 820 and is configured to drive the second support member 820 to rotate downward (or move downward) or rotate upward (or move upward); and a second limiting device (not shown in the figure), which is configured to limit the second support member 820 when it moves to the support position (ensuring that the second support member 820 is limited when it moves to the support position and is in a vertical position), and also configured to limit the second support member 820 when it moves to the avoidance position (ensuring that the second support member 820 is limited when it moves to the avoidance position and is in a vertical position).

[0052] Both the first and second driving devices are configured as rotary driving devices, such as stepper motors.

[0053] In summary, the gypsum calcining machine proposed in this embodiment of the invention, when solid impurities are deposited on the air distribution plate, first discharges the calcined gypsum raw material from the calcination chamber, and then controls the air distribution plate to move from the closed position to the open position to open the connecting section, allowing the solid impurities on the air distribution plate to fall into the air supply chamber under gravity. Then, the unloading device is controlled to discharge the solid impurities from the air supply chamber, and the air distribution plate is controlled to move from the open position to the closed position to close the connecting section. After the solid impurities are completely discharged, the unloading device is controlled to close the second opening, so that the gypsum calcining machine can be restarted and operated normally again. This gypsum calcining machine saves time and effort, is less difficult, and has better practicality in cleaning solid impurities.

[0054] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "square structure shaped like the Chinese character 'kou'" and so on is the orientation or positional relationship based on the accompanying drawings, which is only for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the structure has a specific orientation or is constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0055] In the description of the embodiments of the present invention, unless otherwise explicitly specified and defined, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integrated connection; the terms "installation", "connection", "fixed connection" may be directly connected, or indirectly connected through an intermediate medium, which may mean the two elements are communicated with each other inside. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0056] Although the embodiments disclosed by the present invention are as above, the contents described are only the embodiments adopted for facilitating the understanding of the present invention, and are not intended to limit the present invention. Any person skilled in the art to which the present invention pertains can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed by the present invention, however, the scope of patent protection of the present invention shall still be defined by the appended claims.

Claims

1. A gypsum calcination machine, characterized in that, include: The body has a calcination chamber and an air supply chamber, the calcination chamber being located above the air supply chamber, a connecting section being provided between the calcination chamber and the air supply chamber, and a second opening being provided at the lower part of the air supply chamber; An air distribution plate is installed in the connecting section and has an open position and a closed position. The air distribution plate is configured to close the connecting section when it is in the closed position and open the connecting section when it is in the open position. and A discharge device is provided at the second opening and configured to close the second opening or discharge impurities; The gypsum calcining machine also includes: The first support member and the second support member are located below the air distribution plate and support the two ends of the air distribution plate in the first horizontal direction, based on the air distribution plate being in the closed position. The second support member has a supporting position and a clearance position, and the supporting position is located above the clearance position. Based on the fact that the air distribution plate is in the closed position and the second support member moves from the support position to the avoidance position, the air distribution plate can move forward from the closed position to the open position. Based on the second support member being in the avoidance position and the air distribution plate moving from the open position to the closed position, one end of the air distribution plate abuts against the upper end of the first support member downwards, and the second support member moves from the avoidance position to the support position to support the other end of the air distribution plate. The air distribution plate, the first support member, and the second support member are included in multiple sets arranged sequentially in the first horizontal direction. The second support member and the air distribution plate can be installed by swinging up and down. The hinge axis of the air distribution plate and the hinge axis of the second support member are arranged in a second horizontal direction perpendicular to the first horizontal direction. Multiple air distribution plates are in a closed position and together close the connecting section. Wherein: when the air distribution plate is in the closed position, the air distribution plate is in a horizontal state; when the air distribution plate is in the open position, the air distribution plate is in a vertical state; when the second support member is in the supporting position or the avoidance position, the second support member is in a vertical state in both cases. Multiple air distribution plates are in a closed position, and multiple second support members are in a supporting position; multiple first support members and multiple second support members are alternately arranged in the first horizontal direction. The second support member is in a supporting position: the hinge axis of the second support member is located at the lower end of the second support member; The second support member is in a clearance position: the hinge axis of the second support member is located at the upper end of the second support member.

2. The gypsum calcining machine according to claim 1, characterized in that, Also includes: An air supply device is configured to supply air to the air supply chamber, and the air distribution plate has air passage holes, which are configured to connect the calcination chamber and the air supply chamber when the air distribution plate is in the closed position. and An air distribution device is disposed in the air supply chamber. There is a passage gap between the air distribution device and the chamber wall of the air supply chamber. The air outlet of the air supply device is located in the air supply chamber and faces downward toward the air distribution device. The air distribution device is configured to evenly distribute the airflow blowing from the air outlet of the air supply device toward the air distribution device.

3. The gypsum calcining machine according to claim 2, characterized in that, The air distribution device includes a first conical ring wall that gradually widens from top to bottom, and the air supply chamber includes a second conical ring wall that gradually widens from bottom to top. The first conical ring wall and the second conical ring wall are opposite each other.

4. The gypsum calcining machine according to claim 2, characterized in that, Also includes: Multiple support legs are circumferentially spaced at the second opening. The air distribution device is connected to the cavity wall of the air supply chamber through the multiple support legs, and the intervals include the intervals between adjacent support legs.

5. The gypsum calcining machine according to claim 2, characterized in that, The air supply device includes an air supply pipe that passes through the wall of the air supply chamber. One end of the air supply pipe that extends into the air supply chamber has an air outlet. The air outlet of the air supply pipe faces downward and is directly opposite the air distribution device.

6. The gypsum calcining machine according to claim 1, characterized in that, The unloading device includes an airlock unloading device, which is configured to close the second opening based on a stop and discharge impurities based on operation.

7. The gypsum calcining machine according to claim 1, characterized in that, The body includes: A main body having a calcination chamber, wherein the lower part of the main body is provided with an installation port, and the upper part is provided with a feed port and a discharge port; and A cover with an air supply chamber, the upper part of the cover has a first opening and the lower part has a second opening, the mounting port is connected to the first opening and forms the connecting section.

8. The gypsum calcining machine according to any one of claims 1 to 7, characterized in that, Multiple air distribution plates are in a closed position, and multiple second support members are in a supported position: each air distribution plate has a stepped structure with the stepped surface facing upward at one end corresponding to the second support member it cooperates with, and each air distribution plate has a stepped structure with the stepped surface facing downward at one end corresponding to the first support member it cooperates with. The adjacent ends of adjacent air distribution plates are sealed and overlapped by the stepped structure, and the stepped structures at both ends are also sealed and overlapped with the peripheral wall of the connecting section.

9. The gypsum calcining machine according to claim 8, characterized in that, The air distribution plate is in the closed position: the hinge axis of the air distribution plate is located on the lower side of the air distribution plate and is offset from the center of the air distribution plate in the first horizontal direction.

10. The gypsum calcining machine according to any one of claims 1 to 7, characterized in that, Also includes: The first driving device is connected to the air distribution plate and is configured to drive the air distribution plate to move forward or in reverse. The first limiting device is configured to limit the air distribution plate based on the air distribution plate moving to the closed position and the open position; The second driving device is connected to the second support member in a transmission manner and is configured to drive the second support member to move upward or downward. and The second limiting device is configured to limit the second support member based on the second support member moving to the supporting position and the avoidance position.

Images