A high-temperature material pretreatment chute

Abstract

The application discloses a high-temperature material pretreatment chute, which comprises a feeding port, a precooling channel, a large block discharging channel and a discharging port connected in sequence, and a material detection device arranged in the large block discharging channel; the feeding port is connected with a discharging port of a rotary kiln; material is discharged to the large block discharging channel after being cooled in the precooling channel; the material detection device is used for detecting whether the volume of the high-temperature material in the chute exceeds a preset range; if yes, the discharging port at the large block discharging channel is controlled to be opened, and the material is discharged through the discharging port; if no, the material is discharged to a cooling device through the large block discharging channel and the discharging port. The high-temperature material pretreatment chute disclosed by the application can quickly condense the high-temperature material entering the precooling channel and then enter the cooling device, so that the high-temperature material can be effectively cooled quickly, especially when the high-temperature material appears in liquid phase, the high-temperature material can be prevented from being bonded in the chute, and the phenomenon of the chute being blocked is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rotary kiln roasting, in particular, relates to a high-temperature material pretreatment chute. BACKGROUND

[0002] In the production of rotary kiln, the material discharged from the rotary kiln is generally at a high temperature, even high-temperature liquid metal, with a temperature above 1200 DEG C. When the operation is improper, large pieces of material may be produced in the rotary kiln, with a diameter even above 2m.

[0003] When high-temperature liquid metal appears, the material will be condensed in the chute when entering the next cooling process, which may even block the chute and affect the production. When the liquid metal enters the next cooling process through the chute, it will be bonded in the cooling device, which may seriously endanger the production. When large pieces are produced in the kiln, the existing chute passage is generally small and difficult to pass through, so that the production can only continue after complicated manual treatment.

[0004] Therefore, it is necessary to provide a high-temperature material pretreatment chute to alleviate the above-mentioned defects. SUMMARY

[0005] The present application provides a high-temperature material pretreatment chute, which solves the technical problems of liquid metal bonding and large piece material blocking the chute passage.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] A high-temperature material pretreatment chute, both ends of which are connected with a rotary kiln and a cooling device respectively, comprises a material inlet, a pre-cooling passage, a large piece material discharge passage and a discharge port connected in sequence, and a material detection device arranged in the large piece material discharge passage, the material inlet is connected with a discharge port of the rotary kiln, the material is discharged to the large piece material discharge passage after being cooled in the pre-cooling passage, the material detection device is used to detect whether the volume of high-temperature material in the chute exceeds a preset range, if yes, the discharge port at the large piece material discharge passage is opened, and the material is discharged through the discharge port, if no, the material is discharged to the cooling device through the large piece material discharge passage and the discharge port.

[0008] Further, the pre-cooling passage comprises a wear-resistant and heat-resistant section and a quenching section connected in sequence, and the wear-resistant and heat-resistant section is connected with the material inlet.

[0009] Further, the wear-resistant and heat-resistant section is a wear-resistant and heat-resistant chute plate, which comprises a wear-resistant layer and a heat insulation layer stacked, and the wear-resistant layer or the heat insulation layer is in contact with the high-temperature material.

[0010] Further, the quenching section comprises a quenching chute plate and a refrigeration pipeline arranged on the quenching chute plate.

[0011] Further, cooling water is introduced into the refrigeration pipeline.

[0012] Further, the bulk material discharging channel comprises a movable chute connected to the discharging port in a rotating manner, and a winding device connected to the movable chute for controlling the movement of the movable chute, and the movable chute opens or closes the discharging port under the control of the winding device.

[0013] Further, a kiln entry chute is arranged at the discharging port, and the kiln entry chute is arranged next to the movable chute.

[0014] Further, the winding device is a winch, and a pull rope of the winch is connected to the movable chute for driving the movable chute to rotate to control the opening and closing of the movable chute.

[0015] Further, the material detection device is arranged in the bulk material discharging channel, and the material detection device is a material level switch or a travel switch.

[0016] Further, a protective gas pipeline is arranged, and the protective gas pipeline is inserted into the pre-cooling channel to introduce protective gas into the pre-cooling channel.

[0017] The present application has the following beneficial effects:

[0018] The high-temperature material pre-treatment chute provided by the present application can quickly condense the high-temperature material entering the pre-cooling channel and then enter the cooling equipment, so that the high-temperature material can be effectively cooled, especially when the high-temperature material is in liquid phase, the phenomenon of the high-temperature material sticking in the chute can be effectively avoided after cooling treatment, thereby reducing the phenomenon of the chute being blocked. During the cooling process of the liquid-phase high-temperature material by the pre-cooling channel, bulk material is generated, and the bulk material generated and the bulk material discharged from the material inlet are detected by the material detection device, and the bulk material is effectively sorted. When the volume of the high-temperature material exceeds the preset threshold value in the detection system, the discharging port arranged at the bulk material discharging channel is opened to prevent the bulk material from entering the discharging port and blocking the discharging port, thereby further effectively preventing the chute from being blocked, and the cooling efficiency of the material is improved.

[0019] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the high-temperature material pretreatment chute provided by the present invention;

[0022] Figure 2 for Figure 1 The diagram shows the structure of the rotary kiln.

[0023] Figure 3 for Figure 2 A cross-sectional view of a portion of the structure of the rotary kiln shown.

[0024] Figure 4 for Figure 2 The cross-sectional view of the rotary kiln shown;

[0025] Figure 5 for Figure 3 A partial structural diagram of one embodiment of the rotary kiln shown;

[0026] Figure 6 for Figure 3 A partial structural schematic diagram of another embodiment of the rotary kiln shown. Detailed Implementation

[0027] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0031] Please refer to Figure 1 , the structure diagram of the high-temperature material pre-treatment chute provided by the present application. The high-temperature material pre-treatment chute 100 is connected with a rotary kiln 200 and a cooling device 800 at two ends respectively, and is used for pre-cooling high-temperature material discharged from a discharge port of the rotary kiln 200 before the high-temperature material is transported into the cooling device 800 for cooling. Since the rotary kiln 200 discharges high-temperature material, even liquid-phase material, which may cause adhesion or blockage, the high-temperature material needs to be cooled by a cooling device. The high-temperature material pre-treatment chute is used for pre-cooling high-temperature material entering the cooling device.

[0032] The high-temperature material pre-treatment chute 100 comprises a material inlet 1, a pre-cooling channel 11, a large-piece discharge channel 13 and a discharge port 15 connected in sequence, and a material detection device 17 arranged in the large-piece discharge channel 13. The material inlet 1 is connected with the rotary kiln 200, and material is discharged from the material inlet 1 to the pre-cooling channel 11, and then to the large-piece discharge channel 13 after being cooled, and the large-piece discharge channel 13 is connected with the discharge port 15. Under normal circumstances, when the material is in small pieces, it is discharged from the discharge port 15 through the large-piece discharge channel 13. The material detection device 17 is used for detecting whether the volume of high-temperature material in the chute exceeds a preset range. If the result is yes, the discharge port 16 at the large-piece discharge channel 13 is opened, and the material is discharged through the discharge port 16. If the result is no, the material is discharged from the large-piece discharge channel 13 and the discharge port 15 to the cooling device. Through the pre-cooling channel 11, high-temperature material entering the pre-cooling channel 11 can be quickly condensed before entering the cooling device, and the high-temperature material can be quickly and effectively cooled. Especially when the high-temperature material appears in liquid phase, after cooling treatment, the phenomenon of adhesion of high-temperature material in the chute can be effectively avoided, thereby reducing the phenomenon of chute blockage. Large pieces of material generated during the cooling process of high-temperature material are detected by the material detection device 17, and the large pieces of material are effectively sorted. When the volume of high-temperature material exceeds the threshold value preset in the detection system, the discharge port arranged at the large-piece discharge channel 13 is opened, so as to prevent the large pieces of material from entering the discharge port 15 and blocking the discharge port 15, further effectively prevent the chute from being blocked, and thus improve the cooling efficiency of the material.

[0033] The material inlet 1 is located at the lower part of the kiln port (high-temperature material outlet) of the rotary kiln 200, and the top of the material inlet 1 is arranged in an arc shape matching the shape of the rotary kiln, and the two sides of the opening are opened in a lifting style, so that all the high-temperature material falling down can be collected without spilling. Of course, in other embodiments, when the kiln port of the rotary kiln is in other special shapes, the shape of the material inlet 1 can be matched according to the shape.

[0034] The precooling channel 11 comprises a wear-resistant and heat-resistant section 111 connected to a quenching section 113. The wear-resistant and heat-resistant section 111 is a wear-resistant and heat-resistant chute, which comprises a wear-resistant layer and a heat-insulating layer stacked together, and the wear-resistant layer or the heat-insulating layer is in contact with high-temperature materials. Specifically, in the embodiment, the wear-resistant layer is a wear-resistant and heat-resistant brick or a castable refractory, and the heat-insulating layer is a heat-insulating brick or a lightweight insulating castable.

[0035] The quenching section 113 comprises a quenching chute 115 and refrigeration pipes 117 arranged on the quenching chute 115. The refrigeration pipes 117 are arranged above the quenching chute 115 and are curved into an S-shaped curve to closely fit between the pipes, so as to arrange more pipes in the same area to increase the cooling effect.

[0036] It should be noted that, in order to smoothly guide the materials from the kiln mouth of the rotary kiln into the precooling channel 11, the height of the wear-resistant and heat-resistant section 111 and the quenching section 113 is equal to the diameter of the kiln mouth of the rotary kiln.

[0037] Preferably, in the embodiment, cooling water is introduced into the refrigeration pipes 117. The refrigeration pipes 117 are connected to a water pump, which pumps cooling water from a cooling pool into the refrigeration pipes 117, and then the cooling water is delivered to the quenching section 113 through the refrigeration pipes 117, so as to rapidly cool the high-temperature materials when they are discharged from the precooling channel 11 into the quenching section 113, thereby achieving the purpose of material quenching. It should be noted that the cooling water introduced into the refrigeration pipes 117 can be municipal water from a municipal pipeline, or cooling water treated by a cooling device. Of course, in other embodiments, the refrigeration pipes 117 can also introduce other refrigerants or other refrigerating substances.

[0038] The bulk material discharge channel 13 is connected to the quenching section 113. The bulk material discharge channel 13 comprises a movable chute 131 rotatably connected to the discharge port 16, and a winding device 133 connected to the movable chute 131 for controlling the movement of the movable chute 131. The movable chute 131 opens or closes the discharge port 16 under the control of the winding device 133. It should be noted that the movable chute 131 is installed in the channel through a rotating shaft, and the movable chute 131 rotates around the rotating shaft 132.

[0039] Specifically, in the embodiment, the winding device 133 is a winch, and a pull rope of the winch is connected to the movable chute 131 to drive the movable chute 131 to rotate to control the opening and closing of the movable chute 131. The movable chute 131 is arranged at the discharge port 16. When the pull rope of the winch is lowered, the movable chute 131 rotates counterclockwise to open the discharge port 16, and the large high-temperature materials are discharged from the discharge port 16 and fall into the large material processing pool. After the large materials are discharged, the pull rope of the winch is wound, and the movable chute 131 rotates clockwise to reset.

[0040] The material detection device 17 is arranged in the large material discharge channel 13, and the material detection device 17 is a material level switch or a travel switch. The material detection device 17 feeds back detection information to the control system, the control system controls the movement of the winding device 133 (the winch), and the winding device 133 winds and unwinds the pull rope to drive the movable chute 131 to rotate to control the opening and closing of the discharge port 15. The specific process is as follows: when the material detection device 17 detects that the large materials enter the large material discharge channel 13, the material detection device 17 feeds back the detection information of the materials to the control system, the control system controls the pull rope of the winch to be lowered, the movable chute 131 rotates counterclockwise to open the discharge port 16, the large high-temperature materials are discharged from the discharge port 16 and fall into the large material processing pool, and the large materials are discharged. When the material detection device 17 does not detect the large materials, the pull rope of the winch is wound, and the movable chute 131 rotates clockwise to reset.

[0041] In another embodiment, the high-temperature material pretreatment chute 100 further comprises an entry kiln chute 19 arranged at the discharge port 15, and the entry kiln chute 19 is arranged next to the movable chute 131.

[0042] In another preferred embodiment, the high-temperature material pretreatment chute 100 further comprises a protective gas pipeline 101, and the protective gas pipeline 101 is inserted into the precooling channel 11 to introduce protective gas into the precooling channel 11.

[0043] Please refer to Figures 2-4, the rotary kiln 200 comprises a wind supply system 30, a spray system 31, and a sealing device 300 for connecting and sealing the wind supply system 30 and the spray system 31 on the rotary kiln 10. The sealing device 300 comprises a wind channel sealing ring 33, an annular wind channel 35, a limiting component 37, a sealing component 38 and a connecting component 39, the wind channel sealing ring 33 is connected to the outer periphery of the rotary kiln 10 through the connecting component 39, the annular wind channel 35 is connected to the outer periphery of the wind channel sealing ring 33 and forms an airflow channel 40 with the wind channel sealing ring 33, the wind supply system 30 supplies air to the spray system 31 through the airflow channel 40, and the spray system 31 is connected to the rotary kiln 10 for conveying air to the rotary kiln 10. The sealing component 38 is arranged at the connection between the annular wind channel 35 and the wind channel sealing ring 33 for sealing the airflow channel 40, and the limiting component 37 is arranged on both sides of the annular wind channel 35 for limiting the displacement of the wind channel sealing ring 33. After the airflow from the wind supply system 30 enters the airflow channel 40 formed by the wind channel sealing ring 33 and the annular wind channel 35, it is sent to the spray system 31 through the pipeline, and then conveyed to the rotary kiln 10. By arranging the sealing device 300, the purpose of supplying air from the static wind supply system to the dynamic rotary kiln 10 is achieved. When the rotary kiln 10 rotates, the wind channel sealing ring 33 rotates with the rotary kiln 10 under the pull of the connecting component 39 together with the limiting component 37 and the sealing component 38 fixed thereon. The annular wind channel 35 remains fixed under the action of the pipeline connection of the wind supply system 30 and maintains the relative position with the wind channel sealing ring 33 under the action of the limiting component 37, which can compensate for the position change caused by the axial movement or deformation of the rotary kiln 10 due to thermal expansion and contraction, and reduce the relative displacement between components. Therefore, by arranging the wind channel sealing ring 33, the annular wind channel 35, the limiting component 37, the sealing component 38 and the connecting component 39, the problem of supplying air to the rotary kiln 10 under the combination of static and dynamic conditions is solved, the sealing effect of the combined components is improved, and the problems of rotating cylinder with fan rotation and unstable operation are solved.

[0044] Specifically, in the present embodiment, the rotary kiln 10 can also be a cooling cylinder or a drying cylinder, etc. The rotary kiln is calcined during rotation, and the spray system 31 is used to convey air to the interior of the rotary kiln for adjusting the reaction field and / or temperature field in the cylinder.

[0045] The annular wind channel 35 is a flow passage formed by three faces in a ring structure. Specifically, in the present embodiment, the cross section of the flow passage is square, and in other embodiments, the flow passage can also be semicircular, triangular or other special-shaped structures, etc.

[0046] The ring-shaped air duct 35 is fixed, the air duct sealing ring 33 is arranged around the outside of the rotary cylinder, and together with the limiting assembly 37 and the sealing assembly 38 fixed thereon, rotates with the rotary kiln 10 under the pulling of the connecting assembly 39. The sealing assembly 38 realizes the sealing purpose of the dynamic and static combination surface, and has good sealing effect.

[0047] Please refer to Figure 5 , the sealing assembly 38 includes a sealing ring 381, a compression spring 383, a sliding pressure ring 385, and a fixed frame 387. The fixed frame 387 is fixedly connected to the air duct sealing ring 33, and an installation space is formed between the fixed frame 387 and the ring-shaped air duct 35. The sealing ring 381, the compression spring 383, and the sliding pressure ring 385 are installed in the installation space. One end of the compression spring 383 is connected to the fixed frame 387, and the other end acts on the sliding pressure ring 385. The sealing ring 381 is located in the annular cavity formed between the ring-shaped air duct 35, the air duct sealing ring 33, and the sliding pressure ring 385. The sliding pressure ring 385 generates a compression force on the sealing ring 381 through the compression spring 383.

[0048] Specifically, in the embodiment, the sealing assembly 38 is two groups, and the two groups of sealing assemblies 38 are arranged on both sides of the side wall of the ring-shaped air duct 35.

[0049] As Figure 5 shown, specifically, in the embodiment, the sealing ring 381 is a ring-shaped sealing ring, and the cross section is circular. As Figure 6 shown, in another embodiment, the cross section of the ring-shaped sealing ring 381 is square, and the sealing ring 381 is a rubber sealing ring or an asbestos packing sealing ring 381. Both the rubber sealing ring and the asbestos packing sealing ring have a certain elasticity, and can seal the connection gap between the ring-shaped air duct 35 and the air duct sealing ring 33 under the pre-tightening force of the compression spring 383, and has good sealing effect.

[0050] Specifically, in the embodiment, the sliding pressure ring 385 is L-shaped, and the bottom is fixed on the air duct sealing ring 33.

[0051] It should be noted that, as Figure 5 and Figure 6 shown, the compression spring 383 is connected to the fixed frame 387 through a pin shaft, for better connecting the compression spring 383 to the fixed frame.

[0052] As Figure 3As shown, the limiting assembly 37 comprises a support frame 371 fixed on the air duct sealing ring 33, and an axial limiting mechanism 373 and a radial limiting mechanism 375 fixedly connected to the support frame 371, which respectively limit the displacement of the air duct sealing ring 33 in the axial and radial directions. The air duct sealing ring 33, the axial limiting mechanism and the radial limiting mechanism form a U-shaped surrounding connection on the circumferential side of the annular air duct 35. Since the rotary kiln 10 will expand and contract in the hot state and the cold state, thereby causing axial movement, and will also deform in the radial direction under the action of gravity and thermal load, by arranging the axial limiting mechanism 373 and the radial limiting mechanism 375, the displacement of the rotary kiln 10 in the axial and radial directions can be effectively compensated, so that the movement gap between the components is smaller, which makes it easier for the sealing assembly to seal the gap and the sealing effect is better.

[0053] In another embodiment, as shown in Figure 3 The limiting assembly 37 further comprises a radial limiting track 377 fixedly connected to the side surface of the annular air duct 35, and the end of the radial limiting mechanism 375 away from the support frame 371 is embedded in the radial limiting track 377. By arranging the radial limiting track 377, the radial limiting mechanism 375 is driven by the air duct sealing ring 33 to move along the radial limiting track 377, so that the components do not produce relative positional movement offset in the radial direction, thereby improving the movement accuracy.

[0054] As shown in Figure 3 and Figure 4 The axial limiting mechanism 373 and the radial limiting mechanism 375 are both composed of a plurality of positioning wheels. The annular air duct 35 is fixed under the action of the pipeline connection of the air supply system 30, and the air duct sealing ring 33 and the annular air duct 35 maintain a relative positional relationship under the joint action of the axial wheel set and the radial wheel set. The axial positioning wheel set and the radial positioning wheel set have the same structure, and are composed of 1-24 positioning wheels, preferably 2-24 positioning wheels. In this embodiment, the axial and radial positioning wheel sets are evenly distributed along the circumference of the rotary kiln 10.

[0055] Specifically, the support frame 371 is in the shape of "7", the axial positioning wheel set is arranged along the axial direction of the rotary kiln 10, and the rollers of the axial positioning wheel set act on the side of the annular air duct 35. The radial positioning wheel set is arranged along the radial direction of the rotary kiln 10, the radial limiting track 377 is a cantilever beam structure fixed on the side of the annular air duct 35, and the other side is fixedly connected to the annular air duct 35 through a reinforcing rib. The radial positioning wheel set acts on the radial limiting track 377 and rolls along the radial limiting track 377.

[0056] The connecting assembly 39 is used for connecting the air duct sealing ring and the rotary cylinder and can rotate and stretch. Specifically, in the embodiment, the connecting assembly is hingedly connected between the air duct sealing ring and the rotary cylinder, and can adapt to a certain rotational deformation. The connecting assembly 39 is a flexible connecting rod or a spring pull rod. The connecting assembly 39 itself has a certain stretchability and can adapt to a certain stretch deformation. Preferably, the connecting assembly 39 is a spring pull rod. It can be understood that, by arranging the connecting assembly 39 to connect the air duct sealing ring and the rotary cylinder, the connecting assembly 39 can also adapt to and meet the angle change and interval change of the air duct sealing ring and the rotary cylinder in motion through rotational deformation and stretch deformation, so that the air duct sealing ring and the rotary cylinder are more flexibly connected.

[0057] As shown in Figure 3 The air supply system 30 includes an air supply fan 301, an air supply duct 303 and a compensation device 305. The air supply fan 301 supplies air to the airflow channel 40, and the air supply duct 303 is connected to the annular air duct 35 through the compensation device 305. The air supply duct 303 supplies air to the airflow channel 40, one end of the injection system 31 is connected to the air duct sealing ring 33 through a cylinder air pipe 311 to connect the airflow channel 40, and the other end is inserted into the rotary kiln 10. The airflow channel 40 is connected to the air supply duct 303 and the cylinder air pipe 311 to deliver the air volume of the air supply system 30 to the rotary kiln 10.

[0058] Specifically, in the embodiment, the compensation device 305 is a rubber hose, a metal hose or a compensator, which can adapt to the radial or axial relative displacement between the duct and the annular air duct 35.

[0059] Specifically, when the rotary kiln rotates, the air duct sealing ring 33, together with the support frame 371 fixed thereon, the axial positioning wheel group, the radial positioning wheel group, and the sealing assembly, rotates with the rotary kiln 10 under the pull of the connecting assembly 39. Meanwhile, the annular air duct 35 remains fixed under the action of the air supply pipe 303 of the air supply system 30, and under the combined action of the axial and radial positioning wheel groups, the displacement of the annular air duct 35 is ensured, so that the annular air duct 35 maintains its relative position to the air duct sealing ring 33.

[0060] It should be noted that the cylindrical duct 311 is also equipped with a duct compensation device 313, which is used to compensate for the axial and radial displacement of the cylindrical duct 311 during movement and to prevent the duct from detaching during movement. The duct compensation device 313 is a rubber hose, a metal hose, or a compensator.

[0061] The rotary kiln air supply device provided in this embodiment of the invention achieves the purpose of supplying air from the static air supply system to the dynamic rotary kiln 10 through the sealing device 300, ensuring reliable air supply. Airflow enters the airflow channel 40 formed by the air duct sealing ring 33 and the annular air duct 35 from the air supply system 30, and then is sent to the jetting system 31 via a pipeline. The jetting system 31 then delivers the airflow into the rotary kiln 10. When the rotary kiln 10 rotates, the air duct sealing ring 33, together with the limiting component 37 and the sealing component 38 fixed thereon, rotates with the rotary kiln 10 under the pull of the connecting component 39. The annular air duct 35 is fixed by the pipe connection of the air supply system 30, and maintains its relative position with the air duct sealing ring 33 under the action of the limiting component 37. This can compensate for the positional changes caused by the axial movement or deformation of the rotary kiln 10 due to thermal expansion and contraction, and reduce the relative displacement between components. Therefore, by setting the air duct sealing ring 33, the annular air duct 35, the limiting component 37, the sealing component 38, and the connecting component 39, the problem of air supply to the kiln body of the rotary kiln 10 under dynamic and static combination is solved, the sealing effect of the connection of each combined component is improved, and the problems of the existing use of a rotating cylinder with a fan for rotating power supply and unstable operation are changed.

[0062] The high-temperature material pretreatment chute provided by the embodiment of the present application can quickly condense the high-temperature material entering the precooling channel and then enter the cooling equipment, so that the high-temperature material can be effectively cooled, especially when the high-temperature material is in liquid phase, the phenomenon that the high-temperature material is bonded in the chute can be effectively avoided through cooling treatment, thereby reducing the phenomenon that the chute is blocked. Since the precooling channel also produces large pieces of material during the cooling process of the liquid-phase high-temperature material, the large pieces of material produced and the large pieces of material discharged from the feeding port are detected by the material detection device, the large pieces of material are effectively sorted, when the volume of the high-temperature material exceeds the preset threshold value in the detection system, the discharging port arranged at the large-piece discharging channel is opened, so that the large pieces of material are prevented from entering the discharging port and blocking the discharging port, the chute is further effectively prevented from being blocked, and the material cooling efficiency is improved.

[0063] The above merely describes the preferred embodiments of the present application, but is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high temperature material pretreatment chute, which is connected with a rotary kiln and a cooling device at both ends, characterized in that, The device comprises a feeding inlet, a pre-cooling channel, a bulk material discharging channel and a discharging outlet connected in sequence, and a material detecting device arranged in the bulk material discharging channel.

2. The high temperature material pretreatment chute of claim 1, wherein, The pre-cooling channel comprises a wear-resistant and heat-resistant section and a quenching section connected in sequence.

3. The high temperature material pretreatment chute of claim 2, wherein, The wear-resistant and heat-resistant section is a wear-resistant and heat-resistant chute, which comprises a wear-resistant layer and a heat-insulating layer arranged in sequence.

4. The high temperature material pretreatment chute of claim 2, wherein, The quenching section comprises a quenching chute and a refrigeration pipeline arranged on the quenching chute.

5. The high temperature material pretreatment chute of claim 4, wherein, Cooling water is introduced into the refrigeration pipeline.

6. The high temperature material pretreatment chute of claim 1, wherein, The bulk material discharging channel comprises a movable chute rotatably connected to the discharging outlet, and a winding device connected to the movable chute for controlling the movement of the movable chute.

7. The high temperature material pretreatment chute of claim 6, wherein, The winding device is a winch, and a pull rope of the winch is connected to the movable chute for driving the movable chute to rotate to control the opening and closing of the discharging outlet.

8. The high temperature material pretreatment chute of claim 6, wherein, The material detecting device is arranged in the bulk material discharging channel, and is a material level switch or a travel switch.

9. The high temperature material pretreatment chute of claim 2, wherein, The device further comprises a protective gas pipeline, which is inserted into the pre-cooling channel to introduce protective gas into the pre-cooling channel.

10. The high temperature material pretreatment chute of claim 1, wherein, ​

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