Outer circulation automatic feeding and discharging equipment of rotary kiln

Abstract

The utility model relates to the technical field of rotary kilns, in particular to outer circulation automatic feeding and discharging equipment of a rotary kiln, which comprises a rack, a rotary kiln with a high end and a low end is rotatably arranged on the rack, one end of the rotary kiln is provided with a feeding port, and the other end of the rotary kiln is rotatably matched with a rear screw cap fixed on the rack. A discharging pipe is fixed to the rear screw cover, and a feeding conveying belt device is arranged on the portion, located on one side of the feeding port, of the rack and used for feeding materials into the feeding port. A discharging conveying belt device is arranged on the rack and located below the discharging pipe and used for discharging materials in the rotary kiln. When materials in the rotary kiln are calcined, the materials can be automatically fed and discharged through cooperation of the feeding conveying belt device and the discharging conveying belt device, so that the materials can be circularly fed and discharged for repeated calcination until calcination is thorough, in the whole process, the labor intensity of workers is greatly reduced, and the working efficiency of product calcination is improved; and the overall performance of product calcination is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, and particularly relates to an external circulation automatic loading and unloading device for a rotary kiln. Background Technique

[0002] A rotary kiln refers to a rotary calcination kiln, which belongs to building materials equipment. Rotary kilns can be divided into cement kilns, metallurgical and chemical kilns, and lime kilns according to the materials processed. Cement kilns are mainly used for calcining cement clinker, and are divided into two categories: dry-process cement kilns and wet-process cement kilns. Metallurgical and chemical kilns are mainly used for magnetization roasting of lean iron ore in steel plants in the metallurgical industry; oxidation roasting of chromium and nickel iron ores; roasting of bauxite in refractory material plants and roasting of clinker and aluminum hydroxide in aluminum plants; roasting of chromium ore sand and chromium ore powder and other minerals in chemical plants. Lime kilns are used for roasting active lime and light-burned dolomite used in steel plants and ferroalloy plants.

[0003] At present, the calcination of a rotary kiln may not be thorough in one time, so it is necessary to cycle loading and unloading for repeated calcination. At present, the loading and unloading, handling, and connection with the previous and next processes of this process are all carried out manually. The environment is high-temperature, the manual labor intensity is large, and the manual handling trolley is likely to cause the products on the trolley to fall, resulting in poor quality. For this reason, we propose an external circulation automatic loading and unloading device for a rotary kiln. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an external circulation automatic loading and unloading device for a rotary kiln to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An external circulation automatic loading and unloading device for a rotary kiln includes a frame. A rotary kiln with one end high and one end low is rotatably arranged on the frame. One end of the rotary kiln is provided with a feeding port, and the other end is rotatably and cooperatively installed with a rear rotary cover fixed on the frame. A discharge pipe is fixed on the rear rotary cover. A feeding conveyor belt device is arranged on the frame and on one side of the feeding port for feeding materials into the feeding port;

[0007] A discharging conveyor belt device is arranged on the frame and below the discharge pipe for discharging materials in the rotary kiln;

[0008] The rotary kiln is connected and cooperated with the feeding conveyor belt device and the discharging conveyor belt device through a linkage mechanism. When the feeding conveyor belt device operates to feed materials into the rotary kiln, the rotary kiln stops rotating, and the discharging conveyor belt device remains stationary; when the rotary kiln rotates and the discharging conveyor belt device operates, the feeding conveyor belt device remains stationary.

[0009] A rotary kiln external circulation automatic loading and unloading device as described above: the linkage mechanism comprises a main shaft, a first secondary shaft and a second secondary shaft rotatably mounted on a frame, the main shaft is driven to rotate by a motor fixed to the frame, and the main shaft is connected to the rotary kiln through a gear mechanism to drive the rotary kiln to rotate;

[0010] The main shaft and the first secondary shaft are connected to each other through a worm gear mechanism, wherein the worm gear mechanism comprises a worm fixed on the main shaft and a worm wheel fixed on the first secondary shaft, and the worm is meshingly connected with the worm wheel;

[0011] The first secondary shaft and the second secondary shaft are intermittently connected through a Maltese cross movement assembly;

[0012] The first secondary shaft is connected to the unloading conveyor belt device via a first transmission mechanism, and the second secondary shaft is connected to the loading conveyor belt device via a second transmission mechanism.

[0013] A rotary kiln external circulation automatic loading and unloading equipment as described above: a push rod is movably inserted in the rotary kiln, and a plurality of arc-shaped push plates that are evenly spaced and staggered at equal angles and in contact with the inner wall of the rotary kiln are fixed on the push rod. The push rod is connected to the main shaft through a crank-connecting rod mechanism and a third transmission mechanism to drive the push rod to reciprocate in the rotary kiln.

[0014] A rotary kiln external circulation automatic loading and unloading equipment as described above: the gear mechanism includes a driving bevel gear fixed on the main shaft, a third secondary shaft rotatably mounted on the frame through a bearing, and a driving gear fixed to the outer periphery of the rotary kiln, one end of the third secondary shaft is fixed with a driven bevel gear meshing with the driving bevel gear, and the other end is fixed with a driven gear meshing with the driving gear.

[0015] A rotary kiln external circulation automatic loading and unloading equipment as described above: the Maltese cross movement assembly includes a driving wheel fixed on the first secondary shaft and a driven wheel fixed on the second secondary shaft, and the driving wheel and the driven wheel are intermittently matched and connected.

[0016] The rotary kiln external circulation automatic loading and unloading equipment as described above: the unloading conveyor belt device comprises a second conveyor belt roller rotatably mounted on the frame through a bearing, and the second conveyor belt roller is transmission-connected with a second conveyor belt;

[0017] The first transmission mechanism comprises a first pulley fixed on the first secondary shaft and a second pulley fixed on the second conveyor belt roller, and the first pulley is connected to the second pulley through a first belt transmission.

[0018] A rotary kiln external circulation automatic loading and unloading device as described above: The loading conveyor belt device includes a first conveyor belt roller rotatably installed on the frame through bearings, and a first conveyor belt is drivingly connected to the first conveyor belt roller;

[0019] The second transmission mechanism includes a third pulley fixed on the second secondary shaft and a fourth pulley fixed on the first conveyor belt roller, and the third pulley and the fourth pulley are drivingly connected by a second belt.

[0020] A rotary kiln external circulation automatic loading and unloading device as described above: The crank - connecting rod mechanism includes a crank, both ends of the crank are rotatably installed on the frame through bearings, a connecting rod is hinged on the crank, and the connecting rod is hinged to one end of a push rod through a hinge;

[0021] The third transmission mechanism includes a sixth pulley fixed on the main shaft and a fifth pulley fixed on one end of the crank, and the fifth pulley and the sixth pulley are drivingly connected by a third belt.

[0022] Compared with the prior art, the beneficial effects of the present utility model are: A loading conveyor belt device is provided on one side of the feeding port of the rotary kiln for feeding materials into the feeding port;

[0023] A discharging conveyor belt device is provided below the discharging pipe of the rotary kiln for discharging materials from the rotary kiln;

[0024] The rotary kiln is connected and cooperated with the loading conveyor belt device and the discharging conveyor belt device through a linkage mechanism. When the loading conveyor belt device operates to feed materials into the rotary kiln, the rotary kiln stops rotating, and the discharging conveyor belt device remains stationary; when the rotary kiln rotates and the discharging conveyor belt device operates, the loading conveyor belt device remains stationary;

[0025] Thus, when the materials in the rotary kiln are calcined, through the cooperation of the loading conveyor belt device and the discharging conveyor belt device, the materials can be automatically loaded and unloaded, so as to facilitate cyclic loading and unloading for repeated calcination until the calcination is complete. Throughout the process, the labor intensity of workers is greatly reduced, the working efficiency of product calcination is improved, and the overall performance of product calcination is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a rotary kiln external circulation automatic loading and unloading device.

[0027] Figure 2 It is a schematic diagram of the structure after partial detachment of the frame of a rotary kiln external circulation automatic loading and unloading device.

[0028] Figure 3Schematic structural view of the feeding conveyor belt device, discharging conveyor belt device and partial detachment of the frame of an automatic up-and-down feeding device with external circulation for a rotary kiln furnace.

[0029] Figure 4 is Figure 3 Schematic structural view of the rotary kiln body after detachment on the basis of...

[0030] Figure 5 is Figure 4 Partial structural view in...

[0031] In the figure: 1, frame; 2, rotary kiln furnace; 3, feed inlet; 301, sealing plug; 4, rear rotary cover; 401, exhaust port; 5, discharge pipe; 6, feeding conveyor belt device; 601, first conveyor belt roller; 602, first conveyor belt; 7, discharging conveyor belt device; 701, second conveyor belt roller; 702, second conveyor belt; 8, main shaft; 9, motor; 10, first auxiliary shaft; 11, second auxiliary shaft; 1201, driving bevel gear; 1202, third auxiliary shaft; 1203, driven bevel gear; 1204, driving gear; 1205, driven gear; 1301, worm; 1302, worm wheel; 1401, driving wheel; 1402, driven wheel; 1501, first belt pulley; 1502, second belt pulley; 1503, first belt; 1601, third belt pulley; 1602, fourth belt pulley; 1603, second belt; 1701, crank; 1702, connecting rod; 1703, hinge; 18, push rod; 19, arc-shaped push plate; 2001, fifth belt pulley; 2002, sixth belt pulley; 2003, third belt. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0033] Please refer to Figures 1 to 5 , as an embodiment of the present utility model, an automatic up-and-down feeding device with external circulation for a rotary kiln furnace includes a frame 1, on which a rotary kiln furnace 2 with one end high and one end low is rotatably arranged. One end of the rotary kiln furnace 2 is provided with a feed inlet 3, and the other end is rotatably and cooperatively installed with a rear rotary cover 4 fixed on the frame 1. A discharge pipe 5 is fixed on the rear rotary cover 4. A feeding conveyor belt device 6 is arranged on the frame 1 and on one side of the feed inlet 3 for feeding materials into the feed inlet 3;

[0034] A discharging conveyor belt device 7 is arranged on the frame 1 and below the discharge pipe 5 for discharging materials in the rotary kiln furnace 2;

[0035] The rotary kiln 2 is connected with the loading conveyor belt device 6 and the unloading conveyor belt device 7 through a linkage mechanism. When the loading conveyor belt device 6 runs to load materials into the rotary kiln 2, the rotary kiln 2 stops and the unloading conveyor belt device 7 remains stationary; when the rotary kiln 2 rotates and the unloading conveyor belt device 7 runs, the loading conveyor belt device 6 remains stationary.

[0036] In this embodiment, the material is conveyed to the feed port 3 by the loading conveyor belt device 6, and then the loading conveyor belt device 6 is stationary, the rotary kiln 2 rotates, the material is calcined in the rotary kiln 2, and after the calcination is completed, it is discharged to the outside through the discharge pipe 5 to the unloading conveyor belt device 7 and conveyed to the collecting device. Then the rotary kiln 2 stops rotating, the unloading conveyor belt device 7 stops running, and the loading conveyor belt device 6 runs, and the collected material is dumped onto the loading conveyor belt device 6 again, and the feeding is repeated, thereby completing the external circulation automatic loading and unloading, which is convenient for cyclic loading and unloading to perform repeated calcination of the material.

[0037] As a further solution of the utility model, the linkage mechanism includes a main shaft 8, a first secondary shaft 10 and a second secondary shaft 11 rotatably mounted on the frame 1, the main shaft 8 is driven to rotate by a motor 9 fixed to the frame 1, and the main shaft 8 is connected to the rotary kiln 2 through a gear mechanism to drive the rotary kiln 2 to rotate;

[0038] The main shaft 8 and the first secondary shaft 10 are connected through a worm gear mechanism, which includes a worm 1301 fixed on the main shaft 8 and a worm wheel 1302 fixed on the first secondary shaft 10, and the worm 1301 is meshingly connected with the worm wheel 1302;

[0039] The first secondary shaft 10 and the second secondary shaft 11 are intermittently connected through a Maltese cross movement assembly;

[0040] The first secondary shaft 10 is connected to the unloading conveyor belt device 7 via a first transmission mechanism, and the second secondary shaft 11 is connected to the loading conveyor belt device 6 via a second transmission mechanism.

[0041] In this embodiment, the motor 9 drives the main shaft 8 to rotate, and the main shaft 8 is connected to the rotary kiln 2 via a gear mechanism to drive the rotary kiln 2 to rotate;

[0042] The main shaft 8 and the first secondary shaft 10 are connected via a worm gear mechanism, thereby driving the first secondary shaft 10 to rotate, thereby driving the unloading conveyor belt device 7 to operate; the first secondary shaft 10 and the second secondary shaft 11 are intermittently connected via a Maltese cross movement assembly, thereby driving the second secondary shaft 11 to rotate intermittently, thereby driving the loading conveyor belt device 6 to operate intermittently.

[0043] As a further solution of the utility model, a push rod 18 is movably inserted in the rotary kiln 2, and a plurality of arc-shaped push plates 19 that are evenly spaced and staggered at equal angles and in contact with the inner wall of the rotary kiln 2 are fixed on the push rod 18. The push rod 18 is connected to the main shaft 8 through a crank-connecting rod mechanism and a third transmission mechanism to drive the push rod 18 to reciprocate in the rotary kiln 2.

[0044] In this embodiment, the main shaft 8 rotates, and the push rod 18 is connected to the main shaft 8 through the crank connecting rod mechanism and the third transmission mechanism to drive the push rod 18 to move back and forth in the rotary kiln 2, thereby driving the push rod 18 to push the arc-shaped push plate 19 to move back and forth in the rotary kiln 2, thereby cooperating with the rotation of the rotary kiln 2 to push the material in the rotary kiln 2 forward, and at the same time, the material adhering to the inner wall of the rotary kiln 2 can be scraped off to avoid blockage caused by adhesion.

[0045] As a further solution of the utility model, the gear mechanism includes a driving bevel gear 1201 fixed on the main shaft 8, a third secondary shaft 1202 rotatably mounted on the frame 1 through a bearing, and a driving gear 1204 fixed to the outer periphery of the rotary kiln furnace 2, and one end of the third secondary shaft 1202 is fixed with a driven bevel gear 1203 meshingly connected to the driving bevel gear 1201, and the other end is fixed with a driven gear 1205 meshingly connected to the driving gear 1204.

[0046] In this embodiment, the rotation of the main shaft 8 drives the driving bevel gear 1201 to rotate, and then drives the third secondary shaft 1202 to rotate, and then drives the driven bevel gear 1203 to rotate, thereby driving the driving bevel gear 1201 to rotate and drive the rotary kiln 2 to rotate.

[0047] As a further solution of the utility model, the Maltese cross movement assembly includes a driving wheel 1401 fixed on the first secondary shaft 10 and a driven wheel 1402 fixed on the second secondary shaft 11, and the driving wheel 1401 and the driven wheel 1402 are intermittently matched and connected.

[0048] In this embodiment, the rotation of the first secondary shaft 10 will synchronously drive the driving wheel 1401 to rotate, and the intermittent cooperation connection between the driving wheel 1401 and the driven wheel 1402 drives the driven wheel 1402 to rotate intermittently, thereby driving the second secondary shaft 11 to rotate intermittently.

[0049] As a further solution of the utility model, the unloading conveyor belt device 7 includes a second conveyor belt roller 701 rotatably mounted on the frame 1 through a bearing, and a second conveyor belt 702 is transmission-connected to the second conveyor belt roller 701;

[0050] The first transmission mechanism includes a first pulley 1501 fixed on the first auxiliary shaft 10 and a second pulley 1502 fixed on the second conveyor belt roller 701. The first pulley 1501 and the second pulley 1502 are drivingly connected by a first belt 1503.

[0051] In this embodiment, when the first auxiliary shaft 10 rotates, it will synchronously drive the first pulley 1501 to rotate. Then, by using the driving connection between the first pulley 1501 and the second pulley 1502 through the first belt 1503, the second pulley 1502 is driven to rotate, thereby driving the second conveyor belt roller 701 to rotate and driving the second conveyor belt 702 to roll for conveying materials.

[0052] As a further solution of the present utility model, the feeding conveyor belt device 6 includes a first conveyor belt roller 601 rotatably installed on the frame 1 through bearings, and a first conveyor belt 602 is drivingly connected to the first conveyor belt roller 601;

[0053] The second transmission mechanism includes a third pulley 1601 fixed on the second auxiliary shaft 11 and a fourth pulley 1602 fixed on the first conveyor belt roller 601. The third pulley 1601 and the fourth pulley 1602 are drivingly connected by a second belt 1603.

[0054] In this embodiment, when the second auxiliary shaft 11 rotates, it will synchronously drive the third pulley 1601 to rotate. Then, by using the driving connection between the third pulley 1601 and the fourth pulley 1602 through the second belt 1603, the fourth pulley 1602 is driven to rotate, thereby driving the first conveyor belt roller 601 to rotate and driving the first conveyor belt 602 to roll for conveying materials.

[0055] As a further solution of the present utility model, the crank - connecting rod mechanism includes a crank 1701. Both ends of the crank 1701 are rotatably installed on the frame 1 through bearings. A connecting rod 1702 is hinged to the crank 1701, and the connecting rod 1702 is hinged to one end of the push rod 18 through a hinge member 1703;

[0056] The third transmission mechanism includes a sixth pulley 2002 fixed on the main shaft 8 and a fifth pulley 2001 fixed on one end of the crank 1701. The fifth pulley 2001 and the sixth pulley 2002 are drivingly connected by a third belt 2003.

[0057] In this embodiment, when the main shaft 8 rotates, it will drive the sixth pulley 2002 to rotate, and then drive the fifth pulley 2001 to rotate, thereby driving the crank 1701 to rotate, and further driving the connecting rod 1702 to swing, so as to pull the push rod 18 to reciprocate in the rotary kiln 2.

[0058] It should be noted that a sealing plug 301 is also movably clamped in the feed inlet 3. During the rotation of the rotary kiln 2, the sealing plug 301 seals the feed inlet 3 to prevent material leakage during its rotation.

[0059] An exhaust port 401 communicating with the inside of the rotary kiln 2 is provided on the rear rotary cover 4 for discharging high-temperature gas during the heating of the material in the rotary kiln 2.

[0060] The working principle of this utility model is as follows:

[0061] The rotary kiln 2 is connected and cooperated with the feeding conveyor belt device 6 and the discharging conveyor belt device 7 through a linkage mechanism. When the feeding conveyor belt device 6 operates to feed materials into the rotary kiln 2, the rotary kiln 2 stops rotating, and the discharging conveyor belt device 7 remains stationary; when the rotary kiln 2 rotates and the discharging conveyor belt device 7 operates, the feeding conveyor belt device 6 remains stationary.

[0062] The material is conveyed into the feed inlet 3 through the feeding conveyor belt device 6. Then the feeding conveyor belt device 6 stops, and the rotary kiln 2 rotates. The material is calcined in the rotary kiln 2. After the calcination is completed, it is discharged outward through the discharge pipe 5 onto the discharging conveyor belt device 7 and conveyed into the collecting device. Then the rotary kiln 2 stops rotating, and the discharging conveyor belt device 7 stops operating. The feeding conveyor belt device 6 operates. The worker pours the collected material onto the feeding conveyor belt device 6 again and repeats the feeding into the feed inlet 3 through the feeding conveyor belt device 6, thus completing the automatic up-and-down feeding of the outer cycle for convenient cyclic up-and-down feeding for repeated calcination of the material. Therefore, during the calcination of the material in the rotary kiln 2, through the cooperation of the feeding conveyor belt device 6 and the discharging conveyor belt device 7, the material can be automatically fed in and out, which is convenient for cyclic up-and-down feeding for repeated calcination until the calcination is complete. Throughout the process, the labor intensity of workers is greatly reduced, the working efficiency of product calcination is improved, and the overall performance of product calcination is improved.

[0063] The above embodiments are exemplary rather than restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, all technical solutions that can implement this utility model in other specific forms are included in this utility model.

Claims

1. An automatic loading and unloading device with external circulation for a rotary kiln, comprising a frame (1), on which a rotary kiln (2) with one end higher and the other end lower is rotatably arranged. An inlet (3) is provided at one end of the rotary kiln (2), and the other end is rotatably and cooperatively installed with a rear rotary cover (4) fixed on the frame (1). A discharge pipe (5) is fixed on the rear rotary cover (4), and it is characterized in that, A feeding conveyor belt device (6) is provided on the frame (1) and located on one side of the feeding port (3) for feeding materials into the feeding port (3); A material discharge conveyor belt device (7) is provided on the frame (1) and below the discharge pipe (5) for discharging materials from the rotary kiln (2); The rotary kiln (2) is connected and coordinated with the loading conveyor belt device (6) and the unloading conveyor belt device (7) via a linkage mechanism; when the loading conveyor belt device (6) is running to load materials into the rotary kiln (2), the rotary kiln (2) stops and the unloading conveyor belt device (7) remains stationary; when the rotary kiln (2) rotates and the unloading conveyor belt device (7) is running, the loading conveyor belt device (6) remains stationary.

2. The automatic loading and unloading equipment with external circulation and automatic up-and-down movement for a rotary kiln according to claim 1, characterized in that, The linkage mechanism comprises a main shaft (8), a first secondary shaft (10) and a second secondary shaft (11) rotatably mounted on the frame (1); the main shaft (8) is driven to rotate by a motor (9) fixed to the frame (1); the main shaft (8) is connected to the rotary kiln (2) via a gear mechanism to drive the rotary kiln (2) to rotate; The main shaft (8) and the first secondary shaft (10) are connected in transmission via a worm gear mechanism, the worm gear mechanism comprising a worm (1301) fixed on the main shaft (8) and a worm wheel (1302) fixed on the first secondary shaft (10), the worm (1301) and the worm wheel (1302) being meshingly connected; The first secondary shaft (10) and the second secondary shaft (11) are intermittently connected via a Maltese cross movement assembly; The first secondary shaft (10) is connected to the unloading conveyor belt device (7) via a first transmission mechanism, and the second secondary shaft (11) is connected to the loading conveyor belt device (6) via a second transmission mechanism.

3. The automatic loading and unloading equipment with external circulation and automatic up-and-down movement for a rotary kiln according to claim 2, characterized in that, A push rod (18) is also movably inserted in the rotary kiln (2), and a plurality of arc-shaped push plates (19) are fixed on the push rod (18) and are distributed at equal intervals and equal angles and are in contact with the inner wall of the rotary kiln (2). The push rod (18) is connected to the main shaft (8) via a crank connecting rod mechanism and a third transmission mechanism to drive the push rod (18) to move back and forth in the rotary kiln (2).

4. The automatic loading and unloading equipment with external circulation and automatic up-and-down movement for a rotary kiln according to claim 2, characterized in that, The gear mechanism comprises a driving bevel gear (1201) fixed on the main shaft (8), a third secondary shaft (1202) rotatably mounted on the frame (1) via a bearing, and a driving gear (1204) fixed on the outer periphery of the rotary kiln (2); a driven bevel gear (1203) meshingly connected to the driving bevel gear (1201) is fixed at one end of the third secondary shaft (1202), and a driven gear (1205) meshingly connected to the driving gear (1204) is fixed at the other end.

5. The automatic loading and unloading equipment with external circulation and automatic up-and-down movement for a rotary kiln according to claim 2, characterized in that The Maltese cross movement assembly comprises a driving wheel (1401) fixed on a first secondary shaft (10) and a driven wheel (1402) fixed on a second secondary shaft (11), wherein the driving wheel (1401) and the driven wheel (1402) are intermittently matched and connected.

6. The automatic loading and unloading equipment with external circulation and automatic up-and-down movement for a rotary kiln according to claim 2, characterized in that, The blanking conveyor belt device (7) includes a second conveyor belt roller (701) rotatably mounted on the frame (1) through bearings, and a second conveyor belt (702) is drivingly connected to the second conveyor belt roller (701); The first transmission mechanism includes a first pulley (1501) fixed on the first auxiliary shaft (10) and a second pulley (1502) fixed on the second conveyor belt roller (701), and the first pulley (1501) and the second pulley (1502) are drivingly connected through a first belt (1503).

7. The automatic loading and unloading equipment with external circulation and automatic up-and-down movement for a rotary kiln according to claim 2, wherein The feeding conveyor belt device (6) includes a first conveyor belt roller (601) rotatably mounted on the frame (1) through bearings, and a first conveyor belt (602) is drivingly connected to the first conveyor belt roller (601); The second transmission mechanism includes a third pulley (1601) fixed on the second auxiliary shaft (11) and a fourth pulley (1602) fixed on the first conveyor belt roller (601), and the third pulley (1601) and the fourth pulley (1602) are drivingly connected through a second belt (1603).

8. The automatic loading and unloading equipment with external circulation and automatic up-and-down movement for a rotary kiln according to claim 3, characterized in that, The crank and connecting rod mechanism includes a crank (1701), both ends of the crank (1701) are rotatably mounted on the frame (1) through bearings, a connecting rod (1702) is hinged to the crank (1701), and the connecting rod (1702) is hinged to one end of the push rod (18) through a hinge member (1703); The third transmission mechanism includes a sixth pulley (2002) fixed on the main shaft (8) and a fifth pulley (2001) fixed on one end of the crank (1701), and the fifth pulley (2001) and the sixth pulley (2002) are drivingly connected through a third belt (2003).

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