A calciner

Abstract

The application discloses a calcining machine. The calcining machine comprises a wind distribution plate and a discharging device. The discharging device comprises a scraper and a collecting box. The scraper comprises a scraper blade, which is arranged on the wind distribution plate and is configured to scrape off the material deposited on the wind distribution plate. The scraper blade is arranged to move along a set direction on the wind distribution plate. The collecting box is located downstream of the scraper in the moving direction of the scraper on the wind distribution plate and is configured to collect the material scraped off by the scraper and separate out the slag in the material. The discharging device can clean the slag deposited on the wind distribution plate by the scraper without stopping the calcining machine and separate and discharge the slag by conveying the mixture of the scraped slag and the gypsum powder into the collecting box. The discharging device can maintain the ventilation of the wind distribution plate, ensure the normal use of the calcining machine, ensure the stable quality of the calcined gypsum powder, and realize the discharge of the slag in a simple and efficient manner.

Description

Technical Field

[0001] This invention relates to the field of building material production equipment technology, and more specifically, to a calcining machine. Background Technology

[0002] The calcining machine uses a heat source to calcine gypsum powder placed on an air distribution plate, ensuring that the temperature of the gypsum powder at the outlet reaches 150℃ to guarantee product performance and quality. When the flow of gypsum powder exceeds the calcining capacity of the calcining machine, it not only affects the performance and quality of the product but also impacts the operation of the calcining machine, potentially leading to blockages and shortening the equipment's lifespan.

[0003] Stones or rocks often accumulate at the air distribution plate, affecting the flow of gypsum powder. Over time, the machine needs to be stopped to remove the stones or rocks. Summary of the Invention

[0004] This invention provides a calcining machine, comprising:

[0005] Air distribution panel;

[0006] The unloading device includes a scraper conveyor and a collection box. The scraper conveyor includes a scraper disposed on the air distribution plate and configured to scrape away the material deposited on the air distribution plate. The scraper is configured to move on the air distribution plate in a set direction. The collection box is located downstream of the scraper conveyor along the moving direction of the scraper on the air distribution plate and is configured to collect the material scraped away by the scraper conveyor and separate the slag from the material.

[0007] In some exemplary embodiments, the collection box is provided with an air inlet and a slag discharge outlet. The air inlet is configured to be connected to an air blowing device to blow air into the collection box, so that the slag blocks are separated from the material and fall to the bottom of the collection box. The slag discharge outlet is located at the bottom of the collection box and is configured to discharge the slag blocks.

[0008] In some exemplary embodiments, the collection box includes an inclined sidewall, and the air vent is disposed on the sidewall of the collection box;

[0009] The number of air inlets is multiple, and the multiple air inlets are arranged at intervals along the circumference of the collection box.

[0010] In some exemplary embodiments, the unloading device further includes a slag discharge valve, which is located at the slag discharge port and configured to open or close the slag discharge port.

[0011] In some exemplary embodiments, the scraper conveyor further includes an annular chain, a first driving device, and a driven device. The scraper is fixed to the annular chain, and the first driving device is connected to the annular chain and configured to drive the annular chain to circulate. The first driving device includes a driver, a transmission device connected to the driver, and a drive sprocket connected to the transmission device. The driven device includes a driven sprocket, and the annular chain is sleeved on the drive sprocket and the driven sprocket.

[0012] In some exemplary embodiments, along the direction of movement of the scraper on the air distribution plate, the first driving device is located at the downstream end of the air distribution plate, and the driven device is located at the upstream end of the air distribution plate.

[0013] In some exemplary embodiments, the slag discharge valve includes a second driving device, a valve seat, and a valve core. The second driving device is connected to the valve seat. The valve seat is located on the discharge side of the slag discharge port outside the collection box and can open or close the slag discharge port under the drive of the second driving device. The valve core is located on the other side of the valve seat away from the slag discharge port and abuts against the valve seat.

[0014] In some exemplary embodiments, the mating surfaces of the valve seat and the valve core are both configured as wedge-shaped surfaces. The second driving device is configured to drive the valve seat to move along a first direction parallel to the plane where the slag discharge port is located, so as to close or open the slag discharge port. The valve core is configured to move along a second direction perpendicular to the first direction under the squeezing action of the valve seat.

[0015] In some exemplary embodiments, the slag discharge valve further includes a pressure rod and an elastic element. The pressure rod abuts against the end of the valve core away from the valve seat and / or the pressure rod is connected to the end of the valve core away from the valve seat. The pressure rod cooperates with the elastic element and is configured to drive the valve core to abut against the valve seat under the elastic force of the elastic element.

[0016] In some exemplary embodiments, the elastic element includes a spring, and the slag discharge valve further includes a pressure block and a spring cover. The pressure block and the spring are located inside the spring cover. The pressure rod passes through the spring cover. The pressure block is fixedly connected to the pressure rod. The spring is sleeved on the pressure rod. One end of the spring abuts against the pressure block, and the other end of the spring abuts against the spring cover.

[0017] In some exemplary embodiments, the slag discharge valve further includes two nuts located inside the spring cover. The two nuts are threadedly connected to the pressure rod at a distance, with one nut abutting the end of the pressure block away from the spring and the other nut abutting the end of the spring cover away from the spring.

[0018] In some exemplary embodiments, the slag discharge valve further includes a valve housing, one end of which is connected to the slag discharge port and has a through hole corresponding to the slag discharge port, the other end of which is connected to the spring cover, the valve seat and the valve core are disposed in the valve housing, the second driving device is fixed to the outside of the valve housing, and the pressure rod extends into the valve housing.

[0019] In some exemplary embodiments, the second driving device is a cylinder, including a cylinder body and a piston rod. The cylinder body is fixed to the valve housing, and the piston rod passes through the valve housing and is fixedly connected to the valve seat to drive the valve seat to move.

[0020] In some exemplary embodiments, the calciner further includes an emergency discharge valve, which is located at the slag discharge port and configured to open or close the slag discharge port.

[0021] The calciner in this embodiment of the invention is equipped with a discharge device. Without stopping the calciner, the slag deposited on the air distribution plate is cleaned off by a scraper, thereby maintaining the ventilation of the air distribution plate, ensuring the normal operation of the calciner, ensuring the stable quality of the calcined gypsum powder, and by conveying the mixture of scraped slag and gypsum powder to a collection box to separate and discharge the slag, the discharge of slag is achieved in a simple and efficient manner.

[0022] 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

[0023] 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.

[0024] Figure 1 This is a front view schematic diagram of the calcining machine according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 CC cross-sectional view of the calcining machine;

[0026] Figure 3 for Figure 1 BB cross-sectional view of the calcining machine;

[0027] Figure 4 for Figure 1 A top view of the calcining machine;

[0028] Figure 5for Figure 1 A front view structural diagram of the collection box of the calcining machine;

[0029] Figure 6 for Figure 5 AA cross-sectional view of the collection box;

[0030] Figure 7 for Figure 5 DD cross-sectional view of the collection box;

[0031] Figure 8 for Figure 5 A top view of the collection box;

[0032] Figure 9 for Figure 8 A schematic diagram of the B-direction structure of the collection box.

[0033] Figure label:

[0034] 100-Calcination machine;

[0035] 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-Driven drive shaft, 214-Driven device, 2141-Driven sprocket, 2142-Driven drive shaft, 2143-Tensioning device, 22-Collection box, 221-Air inlet, 222-Slag discharge port, 223-Inclined sidewall, 224-Inlet, 225-Upright sidewall, 226-Outlet, 227 - Inclined plate, 23- Slag discharge valve, 231- Second drive device, 2311- 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. Detailed Implementation

[0036] 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.

[0037] Reference Figures 1-9This application provides a calcining machine 100, including an air distribution plate 1 and a discharge device 2. During the calcination process of the calcining machine 100, some material will be deposited on the air distribution plate 1. The discharge device 2 is used to clean the material deposited on the air distribution plate 1 and discharge it to an appropriate location. The discharge device 2 includes a scraper conveyor 21 and a collection box 22. The scraper conveyor 21 can be located between the air distribution plate 1 and the heating pipe 4 above it. Hot air is circulated in the heating pipe 4 to heat the material (e.g., gypsum powder). The air distribution plate 1 is blown by a blower below, and the hot air passes through the air distribution plate (which has uniformly drilled small holes) from bottom to top, blowing the material upward. The scraper conveyor 21 can be used to clean the material deposited on the air distribution plate 1, maintain the ventilation of the air distribution plate 1, ensure the normal operation of the calcining machine 100 and the quality stability of the calcined material (e.g., gypsum powder). The scraper conveyor 21 includes a scraper 211, which is disposed on the air distribution plate 1 and configured to scrape away material deposited on the air distribution plate 1. The scraper 211 mechanically scrapes off the deposited material, preventing it from clogging the air distribution plate 1. The scraper 211 is configured to move along a predetermined direction on the air distribution plate 1. The scraper 211 can translate along a straight line on the air distribution plate 1 to scrape off material and convey it by pushing. It should be understood that the scraper 211 can also rotate along a central axis on the air distribution plate 1. There may be one scraper 211 or multiple scrapers 211 spaced apart.

[0038] Along the moving direction of the scraper 211 on the air distribution plate 1, the collection box 22 is located downstream of the scraper conveyor 21 and is configured to collect the material scraped away by the scraper 211 of the scraper conveyor 21 and separate the slag from the material. The material scraped away by the scraper 211 of the scraper conveyor 21 is at the output side of the scraper conveyor 21 (e.g., Figure 1 The material (from the right side of the scraper 21) is conveyed to the collection box 22. The material scraped away by the scraper 211 of the scraper 21 can be a mixture including gypsum powder and slag (e.g., gravel or stones). By separating the scraped gypsum powder from the slag through the collection box 22, the waste rate of gypsum powder can be reduced and the utilization rate of gypsum powder can be improved. The slag can be discharged from the collection box 22. One or more collection boxes 22 may be provided. Figure 2 The diagram shows two collection boxes 22 arranged side by side adjacent to the output side of the scraper conveyor 21. The collection box 22 includes an open feed inlet 224 at the top, which is connected to the output side of the air distribution plate 1 to receive material scraped off from the scraper conveyor 21.

[0039] In summary, the calciner 100 of this application embodiment is equipped with a discharge device 2. When the calciner 100 does not need to be stopped, the scraper 21 removes the slag (e.g., stones or rocks) deposited on the air distribution plate 1, thereby maintaining the ventilation of the air distribution plate 1, ensuring the normal operation of the calciner, ensuring the stable quality of the calcined gypsum powder, and conveying the mixture of scraped slag and gypsum powder to the collection box 22, where the slag is separated, thus facilitating slag discharge in a simple and efficient manner.

[0040] In some exemplary embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the collection box 22 is equipped with an air inlet 221 and a slag discharge outlet 222. The air inlet 221 is connected to a blower to blow air into the collection box 22, causing the slag to separate from the material and fall to the bottom of the collection box 22. The blower can be an air compressor. The air compressor introduces compressed air into the collection box 22 through the air inlet 221, using the strong airflow to fully disperse the gypsum powder, while the slag (pebbles or stones) falls to the bottom of the collection box 22 due to their own gravity and can be discharged from the slag discharge outlet 222. The air inlet 221 can be located in the middle or lower part of the collection box 22. The slag discharge outlet 222 can be located at the bottom of the collection box 22 to discharge the slag that falls to the bottom of the collection box 22. This slag discharge method has a simple structure and automatically discharges the slag using its own gravity. It should be understood that, in addition to separating gypsum powder from slag by blowing air, other methods can also be used to separate gypsum powder from slag.

[0041] In some exemplary embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the collection box 22 includes inclined sidewalls 223, and an air inlet 221 is located on the sidewalls 223 of the collection box 22. The collection box 22 is vertically connected to the output side of the scraper conveyor 21 of the calciner 100. Near the feed inlet of the collection box 22, multiple inclined sidewalls 223 are provided towards the center of the collection box 22. These sidewalls 223 form an inverted cone shape and surround the feed inlet 224, allowing the material received by the collection box 22 to flow smoothly along the inclined sidewalls 223 under gravity. An upright sidewall 225 is connected below the inclined sidewalls 223, and a slag discharge port 222 is located on the upright sidewall 225, from which falling slag is discharged. The air inlet 221 is located on the sidewalls 223, with the opening of the air inlet 221 facing an upward angle (e.g., ...). Figure 2 As shown). Through the blower 221, compressed air is blown in, and the gypsum powder is fully dispersed in an upward-sloping direction. Figure 2As can be seen, each of the opposite sidewalls 223 of the collection box 22 is provided with an air vent 221, which further increases the airflow and enhances the effect of dispersing gypsum powder. Preferably, the inclined sidewall 223 of the collection box 22 is at a 60-degree angle to the horizontal direction, and the opening of the air vent 221 is at a 30-degree angle upward relative to the horizontal plane. The collection box 22 may include an inclined sidewall 223 and an upright sidewall 225 connected below the inclined sidewall 223. The air vent 221 is located at the inclined sidewall 223, and the slag discharge port 222 is located at the upright sidewall 225.

[0042] Alternatively, there may be multiple air inlets 221, which are spaced apart circumferentially along the collection box 22. For example, the air inlets 221 may be located on a non-inclined circumferential wall of the collection box 22. It should be understood that the air inlets 221 may also be located in other positions on the collection box 22, such as on the bottom wall of the collection box 22.

[0043] like Figure 5 As shown, an inclined plate 227 can be installed near the slag discharge port 222 inside the collection box 22. The inclined plate 227 can be a steel plate. The inclined plate 227 has several small holes. Air is blown upwards by the air vent 221 located below the inclined plate 227, and the slag blocks fall onto the inclined plate 227 due to their own gravity, moving along the slope of the inclined plate 227 to the slag discharge port 222. The slag discharge port 222 can be set to open at a time to discharge the accumulated slag blocks.

[0044] In some exemplary embodiments, such as Figures 1-2 , Figures 5-6 and Figures 8-9 As shown, the unloading device 2 also includes a slag discharge valve 23, which is located at the slag discharge port 222 and configured to open or close the slag discharge port 222. The slag discharge valve 23 is located outside the collection box 22, on one side of the slag discharge port 222. When slag discharge is required, the slag discharge valve 23 is opened, allowing the slag in the collection box 22 to be discharged smoothly from the slag discharge port 222; when slag discharge is not required, the slag discharge valve 23 is closed, completely blocking the slag discharge port 222 to prevent leakage of gypsum powder from the collection box 22. The slag discharge valve 23 can be manual, electric, or pneumatic, etc.

[0045] In some exemplary embodiments, such as Figures 1 to 4 As shown, the scraper conveyor 21 also includes a ring chain 212, a first drive device 213, and a driven device 214. The first drive device 213 is connected to the ring chain 212 and is configured to drive the ring chain 212 to run in a circular motion. The scraper 211 is fixed to the ring chain 212, and when the ring chain 212 runs in a circular motion, it drives the scraper 211 to move along the running path of the ring chain 212. Figures 2 to 4Two annular chains 212 can be seen, respectively positioned on both sides of the air distribution plate 1 in the transverse direction. A scraper 211 extends along the transverse direction of the air distribution plate 1, with both ends of the scraper 211 fixed to the two annular chains 212. Multiple scrapers 211 can be provided, spaced apart along the annular chains 212. In this embodiment, two scrapers 211 are preferably provided. Of course, the number of annular chains 212 can also be one (located in the middle of the scraper 211 and having a certain width), or three, four, or more, as long as they can drive the scraper 211 to move.

[0046] The first driving device includes a driver 2131, a transmission device (e.g., sprocket 2132) connected to the output shaft of the driver 2131, and a drive sprocket 2133 connected to the transmission device. The driven device 214 includes a driven sprocket 2141. The driver 2131 may be an electric motor. Figure 4 The diagram shows two drive sprockets 2133 and two driven sprockets 2141 arranged along the transverse direction of the air distribution plate 1. Each annular chain 212 extends along the longitudinal direction of the air distribution plate 1 and runs in a ring around one drive sprocket 2133 and one driven sprocket 2141 in sequence. The drive sprockets 2133 and driven sprockets 2141 are respectively located at both ends of the longitudinal direction of the air distribution plate 1. The two drive sprockets 2133 are sleeved on the drive shaft 2134, which is supported by bearings at both ends. The two driven sprockets 2141 are sleeved on the driven shaft 2142. The output shaft of the drive sprocket 2131 drives the drive shaft 2134 to rotate through a transmission device, thereby driving the two drive sprockets 2133 to rotate. The drive sprockets 2133 in turn drive the annular chain 212 to run, and the annular chain 212 drives the driven sprockets 2141 to rotate through chain drive. At the same time, the scraper 211 on the annular chain 212 begins to scrape and convey the material. Tensioning devices 2143 are provided at both ends of the driven drive shaft 2142 so as to tension the annular chain 212 by adjusting the driven sprocket 2141.

[0047] In some exemplary embodiments, such as Figure 1 and Figure 4 As shown, along the moving direction of the scraper 211 on the air distribution plate 1, the first driving device 213 is located at the downstream end of the air distribution plate 1, and the driven device 214 is located at the upstream end of the air distribution plate 1. Figure 1 The diagram shows the ring chain 212 running counterclockwise. The first drive unit 213 is located at... Figure 1 On the right side of the scraper conveyor 21 (the head of the scraper conveyor 21), the driven device 214 is located at... Figure 1 The scraper 21 is located on the left side of the scraper 21 (at the tail end of the scraper 21). The scraper 211 moves from left to right on the air distribution plate 1, and the material is conveyed by the scraper 211 from the tail end of the scraper 21 to the head end of the machine, and then enters the collection box 22 at the head end of the machine.

[0048] In some exemplary embodiments, such as Figures 5 to 9 As shown, the slag discharge valve 23 includes a second drive device 231, a valve seat 232, and a valve core 233. The second drive device 231 is connected to the valve seat 232. The second drive device 231 provides power for the movement of the valve seat 232. The second drive device 231 can be electric, pneumatic, hydraulically driven, etc. The valve seat 232 is located on the side of the slag discharge port 222 that discharges slag. The valve seat 232 can open or close the slag discharge port 222 under the drive of the second drive device 231. Figure 5 As shown, valve seat 232 can move vertically to open or close slag discharge port 222 via its first side 2321. A fixing plate 2392 can be attached to the upright sidewall 225 of the collection box. The fixing plate 2392 can be fixed to one side of the upright sidewall 225 using fasteners 2393 (e.g., countersunk bolts). The fixing plate 2392 can be a smooth steel plate with high machining precision. The first side 2321 of valve seat 232 fits tightly against the fixing plate 2392 and moves back and forth along the fixing plate 2392. The fixing plate 2392 has a high surface finish, which reduces friction during valve seat 232 movement and maintains good sealing performance with the valve seat 232. It should be understood that valve seat 232 can also move in other directions, or valve seat 232 can also be rotated to open or close slag discharge port 222. The valve core 233 is located 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, the second drive device 231 is activated, driving the valve seat 232 to move away from the slag discharge port 222. Figure 5 (Upward direction), thereby opening the slag discharge port 222, and the slag deposited at the bottom of the collection box 22 is automatically discharged through the slag discharge port 222. After the slag discharge is completed, the second drive device 231 drives the valve seat 232 to move in the reverse direction ( Figure 5 (In the downward direction), the valve seat 232 closes the slag discharge port 222. During 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 valve core 233, under the action of the elastic element 235, provides a locking force on the valve seat 232, making the slag discharge port 222 more securely closed and maintaining good sealing. When the valve seat 232 opens, the valve core 233, under the action of the elastic element 235, keeps the first side 2331 of the valve core 233 and the second side of the valve seat 232 in contact. The slag discharge valve 23 adopts this two-part structure including the valve seat 232 and the valve core 233, which is simple in structure, convenient in operation, and has high slag discharge efficiency.

[0049] In some exemplary embodiments, such as Figure 5As shown, the mating surfaces of the valve seat 232 and the valve core 233 are both wedge-shaped. The second side 2322 of the valve seat 232 and the first side 2331 of the valve core 233 mate with each other and are respectively set as wedge-shaped surfaces. The second driving device 231 is configured to drive the valve seat 232 to move along a first direction parallel to the plane where the slag discharge port 222 is located, so as to close or open the slag discharge port 222. The valve core 233 is configured to move along a second direction perpendicular to the first direction under the squeezing action of the valve seat 232. Figure 5 As shown, when the valve seat 232 moves downward toward the slag discharge port 222 to close the slag discharge port 222, the wedge-shaped surface design causes the valve core 233 to move horizontally to the right under the pressure of the valve seat 232. Conversely, when the valve seat 232 moves upward away from the slag discharge port 222 to open the slag discharge port 222, the wedge-shaped surface design causes the valve core 233 to move horizontally to the left. The wedge-shaped surface fit between the valve seat 232 and the valve core 233 ensures a tight seal, preventing the slag discharge valve 23 from jamming due to friction.

[0050] In some exemplary embodiments, such as Figures 5 to 6 As shown, the slag discharge valve 23 also includes a pressure rod 234 and an elastic element 235. The pressure rod 234 is located on the side of the valve core 233 away from the valve seat 232. The pressure rod 234 cooperates with the elastic element 235, configured to drive the valve core 233 to press against the valve seat 232 under the elastic force of the elastic element 235. The pressure rod 234 can be connected (e.g., welded) to the second side 2322 of the valve core 233. The pressure rod 234 and the valve core 233 are pushed together under the elastic force of the elastic element 235, so that the valve core 233 presses against the valve seat 232. When the valve seat 232 moves up and down in the vertical direction, the pressure rod 234 and the valve core 233 can move left and right in the horizontal direction under the elastic force of the elastic element 235 to adapt to the positional changes of the valve seat 232. The function of the elastic element 235 is to provide elastic restoring force, ensuring that the valve core 233 can always press against the valve seat 232 through the pressure rod 234, maintaining a tight fit and reliable seal between the valve core 233 and the valve seat 232. In addition, by adjusting the elastic deformation of the elastic element 235, the magnitude of the elastic force can be adjusted, thereby adjusting the pressing force of the valve core against the valve seat.

[0051] In some exemplary embodiments, such as Figures 5 to 6 As shown, the elastic element 235 includes a spring, and the slag discharge valve 23 also includes a pressure block 236 and a spring cover 237, with the pressure block 236 and spring located inside the spring cover 237. A pressure rod 234 passes through both ends of the spring cover 237 and is supported by it. The pressure block 236 is fixedly connected to the pressure rod 234 (e.g., by a threaded connection). The spring is sleeved on the pressure rod 234, with one end abutting against the pressure block 236 and the other end abutting against the spring cover 237. When the spring is compressed, it pushes the pressure block 236, thereby also pushing the pressure rod 234.

[0052] In some exemplary embodiments, such as Figures 5 to 6 As shown, the slag discharge valve 23 also includes two nuts 238, which are located inside the spring cover 237. The two nuts 238 are threadedly connected to the pressure rod 234 at intervals, with one nut 238 abutting against the end of the pressure block 236 furthest from the spring, and the other nut 238 abutting against the end of the spring cover 237 furthest from the spring. By adjusting the positions of the two nuts 238 and the pressure block 236, the elastic deformation of the spring can be adjusted, thereby adjusting the spring force.

[0053] In some exemplary embodiments, such as Figures 5 to 8 As shown, the slag discharge valve 23 also includes a valve housing 239. The valve housing 239 is the shell of the slag discharge valve 23, used to house or support the second drive device 231, valve seat 232, and valve core 233. One end of the valve housing 239 (e.g., a fixing plate 2392) is connected to the slag discharge port 222 and has a through hole 2391 corresponding to the slag discharge port 222. Slag blocks enter the inner cavity of the valve housing 239 through the slag discharge port 222 and the through hole 2391, and are discharged from the discharge port 226 at the bottom of the valve housing 239. The other end of the valve housing 239 is connected to a spring cover 237, which is fixed to the valve housing 239. The valve seat 232 and valve core 233 are located inside the valve housing 239, and the second drive device 231 is fixed to the outside of the valve housing 239. Figure 5 The diagram shows a second drive unit 231 fixed to the upper part of the valve housing 239. A pressure rod 234 extends into the valve housing 239 to abut against the second side 2332 of the valve core 233.

[0054] In some exemplary embodiments, such as Figure 5 As shown, the second driving device 231 is a cylinder, including a cylinder body 2311 and a piston rod 2312. The cylinder body 2311 is fixed above the valve housing 239 and extends vertically. The piston rod 2312 passes through the upper part of the valve housing 239 and is fixedly connected to the upper part of the valve seat 232 to drive the valve seat 232 to reciprocate.

[0055] In some exemplary embodiments, such as Figure 1 As shown, the calcining machine also includes an emergency discharge valve 4. The emergency discharge valve 4 can be located at the slag discharge port 222 and is 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 description of the emergency discharge valve 4 can be found in the patent application with publication number CN 111018380 A, entitled "A gypsum powder unloading device and calcining machine", and will not be described in detail here.

[0056] In the description of this invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "'mouth' structure", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the "invention" and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0057] In the description of the embodiments of the present invention, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0058] While the embodiments disclosed in this invention are as described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and changes to the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection of this invention shall still be defined by the appended claims.

Claims

1. A calciner characterized by, The application relates to a material discharging device. The material discharging device comprises a distribution plate, a discharging device, and a collecting box. The discharging device comprises a scraper and the collecting box. The scraper comprises a scraper plate arranged on the distribution plate and configured to scrape off the material deposited on the distribution plate. The collecting box is arranged downstream of the scraper plate along the moving direction of the scraper plate on the distribution plate and is configured to collect the material scraped off by the scraper plate and separate out the slag from the material.

2. The calciner of claim 1, wherein, The collecting box is provided with air blowing ports and a slag discharging port. The air blowing ports are connected to air blowing equipment and configured to blow air into the collecting box to separate out the slag from the material and make the slag fall to the bottom of the collecting box.

3. The calciner of claim 1, wherein, The slag discharging port is arranged at the bottom of the collecting box and configured to discharge the slag.

4. The calciner of claim 1, wherein, The scraper further comprises a ring chain, a first driving device, and a driven device.

5. The calciner of claim 3, wherein, The scraper plate is fixed to the ring chain.

6. The calciner of claim 5, wherein, The first driving device is connected to the ring chain and configured to drive the ring chain to circulate.

7. The calciner of claim 6, wherein, The first driving device comprises a driver, a transmission device connected to the driver, and a driving sprocket connected to the transmission device.

8. The calciner of claim 7, wherein, The driven device comprises a driven sprocket. The ring chain is sleeved on the driving sprocket and the driven sprocket. The collecting box comprises an inclined side wall. The air blowing ports are arranged on the side wall of the collecting box. The air blowing ports are arranged in a plurality of numbers and are spaced apart along the circumference of the collecting box. The material discharging device further comprises a slag discharging valve arranged at the slag discharging port and configured to open or close the slag discharging port. The first driving device is arranged at the downstream end of the distribution plate along the moving direction of the scraper plate on the distribution plate. The driven device is arranged at the upstream end of the distribution plate. The slag discharging valve comprises a second driving device, a valve seat, and a valve core. The second driving device is connected to the valve seat. The valve seat is arranged at the discharging side of the slag discharging port outside the collecting box and can be driven by the second driving device to open or close the slag discharging port. The valve core is arranged at the side of the valve seat away from the slag discharging port and abuts against the valve seat. The mutually matching surfaces of the valve seat and the valve core are arranged in wedge shapes. The second driving device is configured to drive the valve seat to move along a first direction parallel to the plane of the slag discharging port to close or open the slag discharging port. The valve core is configured to move along a second direction perpendicular to the first direction under the extrusion of the valve seat. The slag discharging valve further comprises a pressing rod and an elastic member. The pressing rod abuts against and / or is connected to the end of the valve core away from the valve seat. The pressing rod cooperates with the elastic member and is configured to drive the valve core to abut against the valve seat under the elastic force of the elastic member. The elastic member comprises a spring. The slag discharging valve further comprises a pressing block and a spring cover. The pressing block and the spring are arranged in the spring cover. The pressing rod passes through the spring cover. The pressing block is fixedly connected to the pressing rod. The spring is sleeved on the pressing rod. One end of the spring abuts against the pressing block. The other end of the spring abuts against the spring cover.

9. The calciner of claim 8, wherein, The slag discharge valve further comprises two nuts located in the spring cover, the two nuts are threadedly connected with the pressing rod at intervals, and one nut abuts against one end of the pressing block away from the spring, and the other nut abuts against one end of the spring cover away from the spring.

10. The calciner of claim 8, wherein, The slag discharge valve further comprises a valve box, one end of the valve box 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 is connected with the spring cover, the valve seat and the valve core are arranged in the valve box, the second driving device is fixed outside the valve box, and the pressing rod extends into the valve box.

11. The calciner of claim 10, wherein, The second driving device is a cylinder, comprising a cylinder body and a piston rod, the cylinder body is fixed to the valve box, and the piston rod penetrates through the valve box and is fixedly connected with the valve seat to drive the valve seat to move.

12. The calciner of claim 1, wherein, An emergency discharge valve is further arranged at the slag discharge port to open or close the slag discharge port.

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