Calcining machine

Abstract

A calcining machine (100), the calcining machine (100) comprising an air distribution plate (1) and a discharge apparatus (2). The discharge apparatus (2) comprises a scraper device (21) and a collection box (22). The scraper device (21) comprises a scraper (211), the scraper (211) being arranged on the air distribution plate (1) and configured to scrape off material deposited on the air distribution plate (1). The scraper (211) is configured to move on the air distribution plate (1) in a set direction. In the moving direction of the scraper (211) on the air distribution plate (1), the collection box (22) is located downstream of the scraper device (21) and is configured to collect the material scraped off by the scraper (211) and separate slag chunks from the material.

Description

A calciner

[0001] The present application claims priority to the Chinese patent application No. 2024113886480, filed on September 30, 2024, and entitled "A calciner", the contents of which are to be understood as incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to, but is not limited to, the technical field of building material production equipment, and in particular to, but is not limited to, a calciner. BACKGROUND

[0003] The calciner calcines the gypsum powder on the air distribution plate by using a heat source, so that the temperature of the gypsum powder at the outlet reaches 150℃, to ensure the performance and quality of the product. When the inflow of the gypsum powder exceeds the calcination capacity of the calciner, not only the performance and quality of the product are affected, but also the use of the calciner is affected, and even the calciner is blocked, affecting the service life of the equipment.

[0004] The stones or stone blocks are often deposited on the air distribution plate, which affects the flow of the gypsum powder, and the stones or stone blocks need to be cleaned for a long time.

[0005] SUMMARY

[0006] The following is a summary of the subject matter of the detailed description herein. This summary is not intended to limit the scope of the claims.

[0007] A calciner, comprising: an air distribution plate; a discharging device, comprising a scraper and a collection box, the scraper comprising a scraper blade, the scraper blade being arranged on the air distribution plate and being configured to scrape away the material deposited on the air distribution plate; the scraper blade being arranged to move on the air distribution plate in a set direction; the collection box being located downstream of the scraper in the moving direction of the scraper on the air distribution plate and being configured to collect the material scraped away by the scraper blade of the scraper and separate out the slag in the material.

[0008] Other aspects can become apparent after reading and understanding the drawings and detailed description.

[0009] SUMMARY

[0010] The accompanying drawings are used to provide a further understanding of the technical scheme of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical scheme of the present application, and do not constitute a limitation on the technical scheme of the present application.

[0011] Fig. 1 is a front view structural schematic diagram of the calciner of an embodiment of the present application;

[0012] Fig. 2 is a C-C cross-sectional view of the calciner of Fig. 1;

[0013] Figure 3 is a cross-sectional view of the calciner in Figure 1.

[0014] Figure 4 is a top view of the calcining machine shown in Figure 1.

[0015] Figure 5 is a front view of the collection box of the calciner in Figure 1.

[0016] Figure 6 is a cross-sectional view of the collection box in Figure 5 (AA section).

[0017] Figure 7 is a DD cross-sectional view of the collection box in Figure 5;

[0018] Figure 8 is a top view of the collection box in Figure 5.

[0019] Figure 9 is a schematic diagram of the B-direction structure of the collection box in Figure 8.

[0020] Reference numerals: 100-calciner; 1-air distribution plate; 2-unloading device; 21-scraper conveyor; 211-scraper; 212-ring chain; 213-first drive device; 2131-driver; 2132-sprocket; 2133-drive sprocket; 2134-drive shaft; 214-driven device; 2141-driven sprocket; 2142-driven shaft; 2143-tensioning device; 22-collecting box; 221-air vent; 222-slag discharge port; 223-inclined side wall; 224-feed inlet; 225-upright side wall; 226-discharge port; 227-sloping plate; 23-slag discharge valve; 231-second drive device; 231 1-Cylinder body, 2312-Piston rod, 232-Valve seat, 2321-First side of valve seat, 2322-Second side of valve seat, 233-Valve core, 2331-First side of valve core, 2332-Second side of valve core, 234-Pressure rod, 235-Elastic element, 236-Pressure block, 237-Spring cover, 238-Nut, 239-Valve box body, 2391-Through hole, 2392-Fixing plate, 2393-Fastener, 3-Emergency discharge valve, 4-Heating tube.

[0021] Detailed Explanation

[0022] The embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0023] Referring to FIGS. 1-9, an embodiment of the present application provides a calciner 100 including a wind distribution plate 1 and a discharging device 2. During the calcination process of the calciner 100, a portion of the material will deposit on the wind distribution plate 1. The discharging device 2 is used to clean the material deposited on the wind distribution plate 1 from the wind distribution plate 1 and discharge the material to a proper location. The discharging device 2 includes a scraper 21 and a collection bin 22. The scraper 21 can be disposed between the wind distribution plate 1 and the heating tube 4 above. The heating tube 4 is used to pass hot air to heat the material (e.g., gypsum powder). The wind distribution plate 1 is connected to a blowing device (not shown) below to blow air upward through the wind distribution plate 1 (the wind distribution plate 1 is provided with uniform small holes) to blow the material upward. The scraper 21 can be used to clean the material deposited on the wind distribution plate 1 from the wind distribution plate 1 to maintain the air permeability of the wind distribution plate 1 and ensure the normal operation of the calciner 100 and the stability of the quality of the material (e.g., gypsum powder) being calcined. The scraper 21 includes a scraper blade 211 disposed on the wind distribution plate 1 and configured to scrape the material deposited on the wind distribution plate 1. The scraper blade 211 scrapes the deposited material by mechanical action to prevent the material from blocking the wind distribution plate 1. The scraper blade 211 is configured to move in a set direction on the wind distribution plate 1. The scraper blade 211 can move in a linear translation motion on the wind distribution plate 1 to scrape the material and transport the material by pushing. It should be understood that the scraper blade 211 can also move in other ways on the wind distribution plate 1, such as rotating motion around a certain central axis. The scraper blade 211 can be provided with one or a plurality of scraper blades 211 at intervals.

[0024] As shown in FIGS. 1, 2 and 4, in the moving direction of the scraper blade 211 on the wind distribution plate 1, the collection bin 22 is located downstream of the scraper 21 and is configured to collect the material scraped by the scraper blade 211 of the scraper 21 and separate the slag (e.g., stones or stone blocks) from the material. The material scraped by the scraper blade 211 of the scraper 21 is transported into the collection bin 22 at the output side of the scraper 21 (e.g., the right side of the scraper 21 in FIG. 1). The material scraped by the scraper blade 211 of the scraper 21 can be a mixture of gypsum powder and slag (e.g., stones or stone blocks). By separating the scraped gypsum powder from the slag through the collection bin 22, the waste rate of the gypsum powder can be reduced and the utilization rate of the gypsum powder can be improved, and the slag can be discharged from the collection bin 22. The collection bin 22 can be provided with one or more collection bins 22. Two collection bins 22 are shown in FIG. 2 and are arranged side by side adjacent to the output side of the scraper 21. The collection bin 22 includes an open inlet 224 at the top end, which is connected to the output side of the wind distribution plate 1 to receive the material scraped from the scraper 21.

[0025] In summary, the calcining machine 100 of the embodiments of the present application is provided with the discharging device 2. Without stopping the calcining machine 100, the slag blocks (e.g. stones or stone blocks) deposited on the cloth wind plate 1 are cleaned by the scraper 21, so as to maintain the ventilation of the cloth wind plate 1, ensure the normal use of the calcining machine, ensure the stable quality of the calcined gypsum powder, and transport the mixture of the scraped slag blocks and the gypsum powder to the collecting box 22. The slag blocks are separated in the collecting box 22, so that the slag discharge can be performed in a simple and efficient manner.

[0026] In some exemplary embodiments, as shown in FIGS. 1, 2 and 5, the collecting box 22 is provided with an air blowing port 221 and a slag discharge port 222. The air blowing port 221 is connected with an air blowing device, so as to blow air into the collecting box 22, so that the slag blocks are separated from the material and fall to the bottom of the collecting box 22. The air blowing device can be an air compressor. The air compressor blows compressed air into the collecting box 22 through the air blowing port 221, so that the gypsum powder is fully blown away by the strong airflow of the compressed air, and the slag blocks (stones or stone blocks) fall to the bottom of the collecting box 22 due to their own gravity and can be discharged from the slag discharge port 222. As shown in FIGS. 1 and 5, the air blowing port 221 can be arranged at a middle position or a lower position of the collecting box 22. The slag discharge port 222 can be arranged at the bottom of the collecting box 22, so as to discharge the slag blocks falling to the bottom of the collecting box 22. This slag discharge mode has a simple structure and automatically discharges the slag blocks by using their own gravity. It should be understood that, in addition to separating the gypsum powder from the slag blocks by blowing air, the gypsum powder can also be separated from the slag blocks by other ways.

[0027] In some exemplary embodiments, as shown in FIG. 1, FIG. 2 and FIG. 5, the collecting bin 22 comprises a plurality of inclined side walls 223, and the air blowing ports 221 are arranged on the side walls 223 of the collecting bin 22. The collecting bin 22 is connected upright to the output side of the scraper 21 of the calcining machine 100. As shown in FIG. 2, a plurality of inclined side walls 223 are arranged near the inlet 224 of the collecting bin 22, the inclined side walls 223 form a reverse cone shape and surround the inlet 224, so that the material received by the collecting bin 22 can flow smoothly along the inclined side walls 223 under the action of gravity. Referring to FIG. 5 in particular, a plurality of upright side walls 225 are connected below the inclined side walls 223, and the slag discharge port 222 is arranged on one of the upright side walls 225, and the falling slag blocks are discharged from the slag discharge port 222. The air blowing ports 221 are arranged on the inclined side walls 223, so that the opening of the air blowing ports 221 faces an upwardly inclined direction (as shown in FIG. 2). By blowing air (compressed air) through the air blowing ports 221, the gypsum powder is blown away in the upwardly inclined direction. As can be seen from FIG. 2, one air blowing port 221 is arranged on each of the opposite side walls 223 of the collecting bin 22, which further increases the flow of air and enhances the effect of blowing away the gypsum powder. The inclined side walls 223 of the collecting bin 22 can be inclined at an angle of 60 degrees with respect to the horizontal direction, and at this time, the opening of the air blowing port 221 is upwardly inclined at an angle of 30 degrees with respect to the horizontal direction.

[0028] Alternatively, the number of air blowing ports 221 can be multiple, and the multiple air blowing ports 221 are arranged at intervals along the circumference of the collecting bin 22. For example, the air blowing ports 221 can be arranged on the non-inclined circumferential wall of the collecting bin 22. It should be understood that the air blowing ports 221 can also be arranged at other positions of the collecting bin 22, for example, on the bottom wall of the collecting bin 22, etc.

[0029] As shown in FIG. 5, a sloping plate 227 can be arranged near the slag discharge port 222 in the collecting bin 22. The sloping plate 227 can be a steel plate. The sloping plate 227 is provided with a plurality of small holes. By blowing air through the air blowing ports 221 located below the sloping plate 227, the gypsum powder is blown away upwardly through the plurality of small holes on the sloping plate 227, while the slag blocks fall onto the sloping plate 227 due to their own gravity and move along the slope of the sloping plate 227 to the slag discharge port 222. The slag discharge port 222 can be arranged to open at a certain time, so as to discharge the accumulated slag blocks to a certain amount.

[0030] In some example embodiments, as shown in FIGS. 1-2, 5-6 and 8-9, the discharging device 2 further comprises a slag discharge valve 23 arranged at the slag discharge port 222 and configured to open or close the slag discharge port 222. The slag discharge valve 23 is arranged outside the collecting box 22 and at one side of the slag discharge port 222. When slag needs to be discharged, the slag discharge valve 23 is opened to open the slag discharge port 222, so that the slag in the collecting box 22 can be smoothly discharged from the slag discharge port 222; when slag does not need to be discharged, the slag discharge valve 23 is closed to completely block the slag discharge port 222 to prevent the gypsum powder in the collecting box 22 from leaking. The slag discharge valve 23 can be manual, electric or pneumatic, etc.

[0031] In some example embodiments, as shown in FIGS. 1-4, the scraper machine 21 further comprises an endless chain 212, a first driving device 213 and a driven device 214. The first driving device 213 is connected to the endless chain 212 and configured to drive the endless chain 212 to circulate. The scraper 211 is fixed to the endless chain 212, and the endless chain 212 drives the scraper 211 to move along the running path of the endless chain 212 when the endless chain 212 circulates. As shown in FIGS. 2-4, two endless chains 212 are arranged at both sides of the transverse direction of the air distribution plate 1. As shown in FIGS. 2-4, the scraper 211 extends in the transverse direction of the air distribution plate 1, and both ends of the scraper 211 are fixed to the two endless chains 212, respectively. The scraper 211 can be provided in plurality, and the plurality of scrapers 211 are arranged at intervals along the endless chain 212. In this embodiment, the scraper 211 is preferably provided in two. Of course, the number of the endless chain 212 can also be one (for example, located at the middle position of the scraper 211 and having a certain width), three, four or more, as long as the scraper 211 can be driven to move.

[0032] With particular reference to Figs. 2 and 4, the first driving device 213 comprises a driver 2131, a transmission device (e.g., a sprocket 2132) connected to an output shaft of the driver 2131, and a driving sprocket 2133 connected to the transmission device. With reference to Figs. 3 and 4, the driven device 214 comprises a driven sprocket 2141. The driver 2131 can be an electric motor. Two driving sprockets 2133 and two driven sprockets 2141 are shown in Fig. 4, which are arranged along the transverse direction of the air distribution plate 1. Each endless chain 212 extends along the longitudinal direction of the air distribution plate 1 and runs in a loop around one driving sprocket 2133 and one driven sprocket 2141 in sequence. The driving sprockets 2133 and the driven sprockets 2141 are respectively arranged at two ends of the longitudinal direction of the air distribution plate 1. The two driving sprockets 2133 are sleeved on a driving transmission shaft 2134, which is supported by bearings at two ends. The two driven sprockets 2141 are sleeved on a driven transmission shaft 2142. The output shaft of the driver 2131 drives the driving transmission shaft 2134 to rotate through the transmission device, thereby driving the two driving sprockets 2133 to rotate, which in turn drives the endless chain 212 to run. The endless chain 212 drives the driven sprockets 2141 to rotate through chain transmission. Thus, the scrapers 211 on the endless chain 212 start to scrape and convey the material. Tensioning devices 2143 are arranged at two ends of the driven transmission shaft 2142 to tension the endless chain 212 by adjusting the driven sprockets 2141.

[0033] In some exemplary embodiments, as shown in Figs. 1 and 4, the first driving device 213 is arranged at the downstream end of the air distribution plate 1, and the driven device 214 is arranged at the upstream end of the air distribution plate 1 along the moving direction of the scrapers 211 on the air distribution plate 1. The endless chain 212 is shown to run in a counterclockwise direction in Fig. 1. In this case, the first driving device 213 is arranged at the right side (the head portion) of the scraper machine 21 in Fig. 1, and the driven device 214 is arranged at the left side (the tail portion) of the scraper machine 21 in Fig. 1. The scrapers 211 move on the air distribution plate 1 from left to right, and the material is conveyed by the scrapers 211 from the tail portion to the head portion of the scraper machine 21, and then enters the collection bin 22 at the head portion.

[0034] In some example embodiments, as shown in FIGS. 5-9, the slag discharge valve 23 includes a second driving device 231, a valve seat 232, and a valve core 233. The second driving device 231 is connected with the valve seat 232. The second driving device 231 provides power for the movement of the valve seat 232. The second driving device 231 can be electrically driven, pneumatically driven, hydraulically driven, or the like. The valve seat 232 is arranged at one side of the slag discharge port 222 where slag blocks are discharged. The valve seat 232 can be opened or closed to the slag discharge port 222 under the driving of the second driving device 231. As shown in FIG. 5, the valve seat 232 can be moved in the vertical direction to open or close the slag discharge port 222 through the first side 2321 of the valve seat 232. A fixed plate 2392 can be connected on the upright side wall 225 of the collecting box 22. The fixed plate 2392 can be fixed to one side of the upright side wall 225 by fasteners 2393 (e.g., countersunk bolts). The fixed plate 2392 can be a smooth steel plate with relatively high machining precision. The first side 2321 of the valve seat 232 closely abuts the fixed plate 2392 and moves back and forth along the fixed plate 2392. The fixed plate 2392 has a high surface finish, which can reduce the friction when the valve seat 232 moves and maintain good sealing performance with the valve seat 232. It should be understood that the valve seat 232 can also move in other directions, or the valve seat 232 can be opened or closed to the slag discharge port 222 by rotation. The valve core 233 is arranged on the second side 2322 of the valve seat 232 away from the slag discharge port 222 and abuts against the valve seat 232. When it is necessary to discharge slag blocks, the second driving device 231 is started to drive the valve seat 232 to move away from the slag discharge port 222 (in the upward direction in FIG. 5), thereby opening the slag discharge port 222, and the slag blocks deposited at the bottom of the collecting box 22 are automatically discharged through the slag discharge port 222. After the slag discharge is completed, the second driving device 231 drives the valve seat 232 to move in the opposite direction (in the downward direction in FIG. 5), thereby closing the slag discharge port 222 by the valve seat 232. In this process, the first side 2331 of the valve core 233 always abuts against the second side 2322 of the valve seat 232. When the valve seat 232 closes the slag discharge port 222, the abutting force of the valve core 233 against the valve seat 232 under the action of the elastic member 235 provides a force to lock the valve seat 232, so that the slag discharge port 222 is more firmly closed and maintains good sealing performance. When the valve seat 232 opens the slag discharge port 222, the abutting force of the valve core 233 against the valve seat 232 under the action of the elastic member 235 keeps the first side 2331 of the valve core 233 abutting the second side 2322 of the valve seat 232. The slag discharge valve 23 adopts this two-leaf structure including the valve seat 232 and the valve core 233, which is simple in structure, convenient to operate, and high in slag discharge efficiency.

[0035] In some example embodiments, as shown in FIG. 5, the mating surfaces of the valve seat 232 and the valve core 233 are each configured as a wedge surface. The second side 2322 of the valve seat 232 and the first side 2331 of the valve core 233 are configured as mating wedge surfaces. The second driving device 231 is configured to drive the valve seat 232 to move in a first direction parallel to the plane of the slag outlet 222 to close or open the slag outlet 222, and the valve core 233 is configured to move in a second direction perpendicular to the first direction under the extrusion of the valve seat 232. As shown in FIG. 5, when the valve seat 232 moves downward toward the slag outlet 222 to close the slag outlet 222, the wedge surface design causes the valve core 233 to move rightward in the horizontal direction under the extrusion of the valve seat 232. Conversely, when the valve seat 232 moves upward away from the slag outlet 222 to open the slag outlet 222, the wedge surface design causes the valve core 233 to move leftward in the horizontal direction. The wedge surface mating between the valve seat 232 and the valve core 233 can be tightly fitted, and can avoid the phenomenon of the slag valve 23 being stuck due to friction.

[0036] In some example embodiments, as shown in FIGS. 5 and 6, the slag valve 23 further includes a pressing rod 234 and an elastic member 235. The pressing rod 234 is located on the side of the valve core 233 away from the valve seat 232. The pressing rod 234 is configured to drive the valve core 233 to abut against the valve seat 232 under the elastic force of the elastic member 235. The pressing rod 234 and the valve core 233 can be separate components, and the pressing rod 234 abuts against the second side 2332 of the valve core 233 away from the valve seat 232. The pressing rod 234 can also be connected (e.g., welded) to the second side 2332 of the valve core 233. The pressing rod 234 and the valve core 233 are pushed together under the elastic force of the elastic member 235 to make the valve core 233 abut against the valve seat 232. When the valve seat 232 moves up and down in the vertical direction, the pressing rod 234 and the valve core 233 can move left and right in the horizontal direction under the elastic force of the elastic member 235 to adapt to the position change of the valve seat 232. The elastic member 235 provides elastic restoring force to ensure that the valve core 233 always abuts against the valve seat 232 under the action of the pressing rod 234 and the elastic member 235, and maintains the tight fitting and reliable sealing between the valve core 233 and the valve seat 232. In addition, by adjusting the elastic deformation amount of the elastic member 235, the size of the elastic force can be adjusted, and in turn the abutting force of the valve core 233 against the valve seat 232 can be adjusted.

[0037] In some example embodiments, as shown in FIGS. 5-6, the elastic member 235 comprises a spring, and the slag valve 23 further comprises a pressing block 236 and a spring cover 237, the pressing block 236 and the spring being located in the spring cover 237. The pressing rod 234 passes through both ends of the spring cover 237 and is supported by the spring cover 237. The pressing block 236 is fixedly connected (e.g., threaded connection) with the pressing rod 234. The spring is sleeved on the pressing rod 234, one end of the spring abutting against the pressing block 236, and the other end of the spring abutting against the spring cover 237. The spring is in compression deformation, and the spring pushes the pressing block 236, thereby also pushing the pressing rod 234.

[0038] In some example embodiments, as shown in FIGS. 5-6, the slag valve 23 further comprises two nuts 238, which are located in the spring cover 237. The two nuts 238 are spaced apart and threaded with the pressing rod 234, and one nut 238 abuts against one end of the pressing block 236 away from the spring, and the other nut 238 abuts against one end of the spring cover 237 away from the spring. By adjusting the positions of the two nuts 238 and the position of the pressing block 236, the elastic deformation amount of the spring can be adjusted, and thus the elastic force of the spring can be adjusted.

[0039] In some example embodiments, as shown in FIGS. 5-8, the slag valve 23 further comprises a valve box 239. The valve box 239 is a housing of the slag valve 23, used to accommodate or support the second driving device 231, the valve seat 232, and the valve core 233. One end (e.g., a fixed plate 2392) of the valve box 239 is connected with the slag outlet 222 and is provided with a through hole 2391 corresponding to the slag outlet 222, the slag block entering the inner cavity of the valve box 239 through the slag outlet 222 and the through hole 2391, and being discharged from the discharge outlet 226 below the valve box 239. The other end of the valve box 239 is connected with the spring cover 237, and the spring cover 237 is fixed to the valve box 239. The valve seat 232 and the valve core 233 are arranged in the valve box 239, and the second driving device 231 is fixed to the outside of the valve box 239. In FIG. 5, the second driving device 231 is fixed to the upper part of the valve box 239. The pressing rod 234 extends into the valve box 239 to abut against the second side 2332 of the valve core 233.

[0040] In some example embodiments, as shown in FIG. 5, the second driving device 231 is a gas cylinder, comprising a cylinder body 2311 and a piston rod 2312. The cylinder body 2311 is fixed above the valve box 239 and extends in the vertical direction. The piston rod 2312 passes through the upper part of the valve box 239 and is fixedly connected with the upper part of the valve seat 232 to drive the valve seat 232 to reciprocate.

[0041] In some example embodiments, as shown in FIG. 1, the calcining machine further comprises an emergency discharge valve 4. The emergency discharge valve 4 can be arranged at the slag discharge port 222 and configured to open or close the slag discharge port 222. In addition to being adapted to the slag discharge valve 23, the slag discharge port 222 can also be adapted to the emergency discharge valve 4. The emergency discharge valve 4 can refer to the description in the Chinese patent application with the application publication number CN 111018380 A and the title of "Gypsum powder discharge device and calcining machine", which will not be described in detail here.

[0042] In the description of the embodiments of the present application, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery", "mouth" structure, etc. indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the structure referred to has a particular orientation, is constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Although the embodiments disclosed in the present application are as described above, the content described is only the embodiments adopted for the convenience of understanding the present application, and is not intended to limit the present application. Any person skilled in the art can make any modification and change in the form and details without departing from the spirit and scope of the present application, but the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A calcining machine comprising: a wind distribution plate; a discharging device comprising a scraper and a collecting box, the scraper comprising a scraper blade, the scraper blade being arranged on the wind distribution plate and configured to scrape material deposited on the wind distribution plate, the scraper blade being configured to move on the wind distribution plate in a set direction, the collecting box being located downstream of the scraper in the moving direction of the scraper blade on the wind distribution plate and configured to collect the material scraped by the scraper blade and separate out clinker in the material.

2. The calciner of claim 1, wherein, the collecting box being provided with air blowing ports and a clinker discharge port, the air blowing ports being configured to be connected to air blowing equipment to blow air into the collecting box to separate out the clinker from the material and make the clinker fall to the bottom of the collecting box, the clinker discharge port being provided at the bottom of the collecting box and configured to discharge the clinker.

3. The calciner of claim 2, wherein, the collecting box comprising an inclined side wall, the air blowing ports being provided on the inclined side wall of the collecting box; the air blowing ports being provided in a plurality of numbers and spaced apart along the circumference of the collecting box.

4. The calciner of claim 2, wherein, the discharging device further comprising a clinker discharge valve provided at the clinker discharge port and configured to open or close the clinker discharge port.

5. The calciner of any one of claims 1 to 4, wherein, the scraper further comprising a ring chain, a first driving device and a driven device, the scraper blade being fixed to the ring chain, the first driving device being connected to the ring chain and configured to drive the ring chain to circulate, the first driving device comprising a driver, a transmission device connected to the driver and a driving sprocket connected to the transmission device, the driven device comprising a driven sprocket, the ring chain being sleeved on the driving sprocket and the driven sprocket.

6. The calciner of claim 5, wherein, in the moving direction of the scraper blade on the wind distribution plate, the first driving device is provided at the downstream end of the wind distribution plate and the driven device is provided at the upstream end of the wind distribution plate.

7. The calciner of claim 4, wherein, the clinker discharge valve comprising a second driving device, a valve seat and a valve core, the second driving device being connected to the valve seat, the valve seat being provided at the discharge side of the clinker discharge port outside the collecting box and being capable of being driven by the second driving device to open or close the clinker discharge port, the valve core being provided at the other side of the valve seat away from the clinker discharge port and abutting against the valve seat.

8. The calciner of claim 7, wherein, surfaces of the valve seat and the valve core that are in mutual cooperation are configured as wedge surfaces, the second driving device being configured to drive the valve seat to move in a first direction parallel to the plane in which the clinker discharge port is located to close or open the clinker discharge port, the valve core being configured to move in a second direction perpendicular to the first direction under the extrusion of the valve seat.

9. The calciner of claim 8, wherein, the clinker discharge valve further comprising a pressing rod and an elastic member, the pressing rod being connected to the end of the valve core away from the valve seat, the pressing rod being in cooperation with the elastic member and being configured to drive the valve core to abut against the valve seat under the elastic force of the elastic member.

10. The calciner of claim 8, wherein, the clinker discharge valve further comprising a pressing rod and an elastic member, the pressing rod abutting against the end of the valve core away from the valve seat, the pressing rod being in cooperation with the elastic member and being configured to drive the valve core to abut against the valve seat under the elastic force of the elastic member.

11. The calciner of claim 9 or 10, wherein, The elastic member comprises a spring, the slag discharge valve further comprises a pressing block and a spring cover, the pressing block and the spring are located in the spring cover, the pressing rod passes through the spring cover, the pressing block is fixedly connected with the pressing rod, the spring is sleeved on the pressing rod, one end of the spring abuts against the pressing block, and the other end of the spring abuts against the spring cover.

12. The calciner of claim 11, wherein, The slag discharge valve further comprises two nuts, the two nuts are located in the spring cover, the two nuts are threadedly connected with the pressing rod at intervals, one nut abuts against the end of the pressing block away from the spring, and the other nut abuts against the end of the spring cover away from the spring.

13. The calciner of claim 11, wherein, The slag discharge valve further comprises a valve box body, one end of the valve box body is connected with the slag discharge port and is provided with a through hole corresponding to the slag discharge port, the other end of the valve box body is connected with the spring cover, the valve seat and the valve core are arranged in the valve box body, the second driving device is fixed to the outside of the valve box body, and the pressing rod extends into the valve box body.

14. The calciner of claim 13, wherein, The second driving device is a gas cylinder, comprising a cylinder body and a piston rod, the cylinder body is fixed to the valve box body, the piston rod passes through the valve box body and is fixedly connected with the valve seat, so as to drive the valve seat to move.

15. The calciner of claim 2, further comprising an emergency discharge valve arranged at the slag discharge port and configured to open or close the slag discharge port.

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