A series-parallel combined rotary furnace

Abstract

The application discloses a series connection synchronous combination rotary furnace, which comprises a plurality of rotary furnaces, a plurality of material conveying devices, a plurality of rotary furnace supporting devices for supporting the rotary furnaces and a rotary furnace driving device for driving the rotary furnaces to rotate. Rotary furnace supporting devices are arranged near the inlets and outlets of the rotary furnaces, and the outlet of one rotary furnace is connected with the inlet of the adjacent rotary furnace through a material conveying device. The material conveying device comprises a synchronous connection mechanism and a spiral conveying mechanism. The synchronous connection mechanism is used for controlling the synchronous rotation of two adjacent rotary furnaces, and is fixed between the end portions of the two adjacent rotary furnaces. The spiral conveying mechanism is used for driving the rotation of the rotary furnace to convey solid materials, and is fixed between the side surfaces of the two adjacent rotary furnaces. The outlet of one rotary furnace is connected with the inlet of the adjacent rotary furnace through the material conveying device, so that the material conveying process can be simplified, heat loss can be reduced, the occupied space can be reduced and the cost can be saved.

Description

Technical Field

[0001] This invention relates to the field of rotary kiln technology, and more specifically, to a series-connected synchronous combined rotary kiln. Background Technology

[0002] A rotary kiln is a general-purpose thermal equipment for the dynamic calcination, roasting, or drying of granular and powdery materials. When materials need to be calcined, roasted, or dried, they must pass through multiple rotary kilns sequentially. Currently, these multiple rotary kilns are connected by pipes, with the discharge port of the previous rotary kiln higher than the inlet of the next, utilizing the height difference between adjacent kilns for material transport. This process is complex, and the connecting pipes between adjacent kilns are prone to leaks, resulting in leakage of hot air and significant heat loss. Furthermore, multiple rotary kilns are connected in series on different horizontal planes, each independent and requiring its own support, drive, and control equipment. This configuration requires a large footprint and increases costs.

[0003] In summary, how to provide a series-connected rotary kiln that simplifies the material conveying process, reduces heat loss, reduces floor space, and saves costs is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a series synchronous combined rotary kiln, which can simplify the material conveying process, reduce heat loss, reduce floor space and save costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A series-connected synchronous combined rotary kiln includes several rotary kilns, several material conveying devices, several rotary kiln support devices for supporting the several rotary kilns, and a rotary kiln drive device for driving the several rotary kilns to rotate; the several rotary kilns are connected in series and arranged along the same axis of rotation; the rotary kiln support devices are provided near the inlet and outlet of each rotary kiln; the outlet of each rotary kiln is connected to the inlet of an adjacent rotary kiln via the material conveying devices; the material conveying devices include:

[0007] A synchronous connection mechanism is used to control the synchronous rotation of two adjacent rotary kilns. The synchronous connection mechanism is fixed between the ends of the two adjacent rotary kilns, and the end outlet of the rotary kiln is connected to the end inlet of the adjacent rotary kiln through the synchronous connection mechanism.

[0008] A screw conveyor mechanism is used to drive its rotation to convey solid materials. The screw conveyor mechanism is fixed between the sides of two adjacent rotary kilns, and the side outlet of the rotary kiln is connected to the side inlet of the adjacent rotary kiln through the screw conveyor mechanism.

[0009] Preferably, the rotary kiln includes a large-diameter tube body and a small-diameter tube head, with the small-diameter tube head located at both ends of the large-diameter tube body to facilitate connection between the ends of two adjacent rotary kilns.

[0010] Preferably, the screw conveying mechanism includes two screw conveyors, the side outlet of the rotary kiln is connected to the inlet of the front screw conveyor, the side inlet of the adjacent rotary kiln is connected to the outlet of the back screw conveyor, and the outlet of the front screw conveyor is connected to the inlet of the back screw conveyor.

[0011] Preferably, the synchronous connection mechanism includes a flange, and the end outlet of the rotary kiln is connected to the end inlet of the adjacent rotary kiln through the flange; the outlet of the front screw conveyor is fixedly connected to the inlet of the back screw conveyor.

[0012] Preferably, the synchronous connection mechanism includes a synchronous connecting rod, which includes several synchronous connecting rods and several support seats; two pairs of support seats are fixedly provided near the end outlet of the rotary kiln and the end inlet of the adjacent rotary kiln, and the synchronous connecting rod is rotatably disposed between a pair of support seats along the rotation axis of the rotary kiln.

[0013] Preferably, the synchronous connection mechanism further includes a flexible connector, through which the end outlet of the rotary kiln is connected to the end inlet of the adjacent rotary kiln to compensate for the displacement between the two adjacent rotary kilns caused by thermal expansion.

[0014] Preferably, the outlet of the front-end screw conveyor is connected to the inlet of the back-end screw conveyor via the flexible connector.

[0015] Preferably, the flexible connector is a stainless steel corrugated expansion joint.

[0016] Preferably, the outer wall of the end outlet of the rotary kiln is provided with a first protruding key, and the inner wall of the adjacent end inlet of the rotary kiln is provided with a first keyway. The first protruding key is slidably inserted into the first keyway along the rotation axis of the rotary kiln.

[0017] Preferably, the outer wall of the outlet of the front screw conveyor is provided with a second protruding key, and the inner wall of the inlet of the rear screw conveyor is provided with a second keyway. The second protruding key is slidably inserted into the second keyway along the rotation axis of the rotary kiln.

[0018] Compared to the aforementioned background technology, the serially synchronized combined rotary kiln provided by the present invention includes several rotary kilns, several material conveying devices, several rotary kiln support devices for supporting the several rotary kilns, and a rotary kiln drive device for driving the several rotary kilns to rotate. Rotary kiln support devices are provided near both the inlet and outlet of the rotary kiln. The several rotary kilns are connected in series and arranged along the same rotation axis. The outlet of one rotary kiln is connected to the inlet of its adjacent rotary kiln via a material conveying device. The material conveying device includes a synchronous connection mechanism and a screw conveying mechanism. The synchronous connection mechanism is used to control the synchronous rotation of two adjacent rotary kilns. The synchronous connection mechanism is fixed between the ends of two adjacent rotary kilns, and the end outlet of one rotary kiln is connected to the end inlet of its adjacent rotary kiln via the synchronous connection mechanism. The screw conveying mechanism is used to drive its rotation to convey solid materials. The screw conveying mechanism is fixed between the sides of two adjacent rotary kilns, and the side outlet of one rotary kiln is connected to the side inlet of its adjacent rotary kiln via the screw conveying mechanism.

[0019] The aforementioned series-connected synchronous combined rotary kiln includes several rotary kilns and several material conveying devices. Material conveying is completed between adjacent rotary kilns via the material conveying devices. Each rotary kiln is supported by a rotary kiln support device near its inlet and outlet. The material conveying device includes a synchronous connection mechanism and a screw conveyor mechanism. The ends of adjacent rotary kilns are connected by the synchronous connection mechanism, which enables adjacent rotary kilns to rotate synchronously. Therefore, one rotary kiln drive device can drive several series-connected rotary kilns to rotate, reducing cost investment. The end outlet of one rotary kiln is connected to the end inlet of its adjacent rotary kiln. The inlet is connected via a synchronous connection mechanism, allowing gaseous materials in the rotary kiln to be directly transported to adjacent rotary kilns. This eliminates the need for additional pipelines between several rotary kilns, simplifying the gaseous material transport process and reducing heat loss. A screw conveyor mechanism is fixed between the sides of two adjacent rotary kilns and rotates with them. Solid materials in the rotary kilns enter the screw conveyor mechanism from the side outlet, driving its rotation. The solid materials in the screw conveyor mechanism are then transported to the side inlet of the adjacent rotary kiln, efficiently transporting solid materials between adjacent kilns and simplifying the solid material transport process. Furthermore, both the synchronous connection mechanism and the screw conveyor mechanism are fixed between two adjacent rotary kilns, and no additional pipelines are needed between several rotary kilns, thus saving floor space.

[0020] Therefore, the outlet of the rotary kiln is connected to the inlet of its adjacent rotary kiln through a material conveying device, thereby enabling several rotary kilns to be connected in series. This simplifies the material conveying process, reduces heat loss, reduces floor space, and saves costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a specific embodiment of the series-connected synchronous combined rotary kiln provided by the present invention;

[0023] Figure 2 A schematic diagram of a specific embodiment two of the series-connected synchronous combined rotary kiln provided by the present invention;

[0024] Figure 3 A schematic diagram of a specific embodiment three of the series-connected synchronous combined rotary kiln provided by the present invention;

[0025] Figure 4 This is a schematic diagram of a specific embodiment of the synchronous connector for the series-connected synchronous combined rotary kiln provided by the present invention;

[0026] Figure 5 for Figure 4 Side view;

[0027] Figure 6 This is a schematic diagram of another specific embodiment of the synchronous connector of the series synchronous combined rotary kiln provided by the present invention;

[0028] Figure 7 for Figure 6 Side view.

[0029] Figures 1-7 In the accompanying drawings, the reference numerals include:

[0030] 1 is a rotary kiln, 2 is a rotary kiln support device, 3 is a rotary kiln drive device, 4 is a front-end screw conveyor, 5 is a rear-end screw conveyor, 6 is a flange, 7 is a synchronous connecting rod, 8 is a flexible connector, 71 is a synchronous connecting rod, and 72 is a support base. Detailed Implementation

[0031] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The core of this invention is to provide a series synchronous combined rotary kiln, which can simplify the material conveying process, reduce heat loss, reduce floor space, and save costs.

[0033] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a specific embodiment of the series-connected synchronous combined rotary kiln provided by the present invention.

[0034] The present application provides a plurality of rotary kilns 1, a plurality of material conveying devices, a plurality of rotary kiln support devices 2 for supporting the plurality of rotary kilns 1, and a rotary kiln drive device 3 for driving the plurality of rotary kilns 1 to rotate; rotary kiln support devices 2 are provided near the inlet and outlet of the rotary kiln 1, the plurality of rotary kilns 1 are connected in series and arranged on the same axis of rotation, and the outlet of the rotary kiln 1 is connected to the inlet of its adjacent rotary kiln 1 through a material conveying device; the material conveying device includes a synchronous connection mechanism and a screw conveying mechanism.

[0035] The synchronous connection mechanism is used to control the synchronous rotation of two adjacent rotary kilns. The synchronous connection mechanism is fixed between the ends of the two adjacent rotary kilns 1, and the end outlet of rotary kiln 1 is connected to the end inlet of its adjacent rotary kiln 1 through the synchronous connection mechanism.

[0036] The screw conveyor is used to drive its rotation to transport solid materials. The screw conveyor is fixed between the sides of two adjacent rotary kilns 1, and the side outlet of the rotary kiln 1 is connected to the side inlet of its adjacent rotary kiln 1 through the screw conveyor.

[0037] Specifically, the series-connected synchronous combined rotary kiln includes several rotary kilns 1 and several material conveying devices. Material conveying is completed between adjacent rotary kilns 1 via the material conveying devices. Each rotary kiln 1 is supported by a rotary kiln support device 2 near its inlet and outlet. The material conveying device includes a synchronous connection mechanism and a screw conveyor mechanism. The ends of adjacent rotary kilns 1 are connected by the synchronous connection mechanism, which enables adjacent rotary kilns 1 to rotate synchronously. Therefore, one rotary kiln drive device 3 can drive the rotation of several series-connected rotary kilns 1, reducing cost investment. The end outlet of one rotary kiln 1 is connected to the end outlet of its adjacent rotary kiln 1. The inlet of the rotary kiln 1 is connected via a synchronous connection mechanism, allowing gaseous materials within the kiln 1 to be directly transported to adjacent rotary kilns 1. This eliminates the need for additional pipelines between several rotary kilns 1, simplifying the gaseous material transport process and reducing heat loss. A screw conveyor mechanism is fixed between the sides of two adjacent rotary kilns 1 and rotates with them. Solid materials within the rotary kiln 1 enter the screw conveyor mechanism from the side outlet, driving its rotation. The solid materials within the screw conveyor mechanism are then transported to the side inlet of the adjacent rotary kiln 1, efficiently transporting solid materials between adjacent rotary kilns 1 and simplifying the solid material transport process. Furthermore, both the synchronous connection mechanism and the screw conveyor mechanism are fixed between two adjacent rotary kilns 1, and no additional pipelines are required between several rotary kilns 1, thus saving floor space.

[0038] Therefore, the outlet of rotary kiln 1 is connected to the inlet of its adjacent rotary kiln 1 through a material conveying device, thereby realizing the series connection of several rotary kilns 1, which can simplify the material conveying process, reduce heat loss, reduce the footprint and save costs.

[0039] Furthermore, the rotary kiln 1 includes a large-diameter tube body and a small-diameter tube head, with the small-diameter tube head located at both ends of the large-diameter tube body to facilitate connection between the ends of two adjacent rotary kilns 1.

[0040] In a specific embodiment, the screw conveyor mechanism of this application includes two screw conveyors. The side outlet of the rotary kiln 1 is connected to the inlet of the front screw conveyor 4, the side inlet of the adjacent rotary kiln 1 is connected to the outlet of the back screw conveyor 5, and the outlet of the front screw conveyor 4 is connected to the inlet of the back screw conveyor 5. This facilitates the transfer of solid materials between two adjacent rotary kilns 1 and improves the transfer efficiency. It should be noted that the side outlet of the rotary kiln 1 and the side inlet of the adjacent rotary kiln 1 are located on the same side of their respective rotary kilns 1.

[0041] In a specific embodiment, the synchronous connection mechanism includes a flange 6, through which the end outlet of the rotary kiln 1 is connected to the end inlet of the adjacent rotary kiln 1; the outlet of the front screw conveyor 4 is fixedly connected to the inlet of the back screw conveyor 5.

[0042] Specifically, the end outlet of rotary kiln 1 is fixedly connected to the end inlet of the adjacent rotary kiln 1 via flange 6, so that the two adjacent rotary kilns 1 are rigidly connected and can rotate synchronously. In addition, the outlet of the front screw conveyor 4 is fixedly connected to the inlet of the back screw conveyor 5 to meet the transfer of solid materials between the two screw conveyors and to ensure that the two screw conveyors can rotate synchronously with the rotary kiln 1.

[0043] Optionally, the outlet of the front screw conveyor 4 is welded to the inlet of the rear screw conveyor 5 to form a rigid connection, so that the two screw conveyors rotate synchronously.

[0044] Alternatively, the outlet of the front screw conveyor 4 can be connected to the inlet of the back screw conveyor 5 via a coupling to form a rigid connection, thereby allowing the two screw conveyors to rotate synchronously.

[0045] Please refer to Figure 2 , Figure 4 and Figure 5 , Figure 2 A schematic diagram of a specific embodiment two of the series-connected synchronous combined rotary kiln provided by the present invention; Figure 4 This is a schematic diagram of a specific embodiment of the synchronous connector for the series-connected synchronous combined rotary kiln provided by the present invention; Figure 5 for Figure 4 Side view.

[0046] In a specific embodiment 2, the synchronous connection mechanism of this application includes a synchronous connecting rod 7, which includes a plurality of synchronous connecting rods 71 ​​and a plurality of support seats 72; two pairs of support seats 72 are fixedly provided near the end outlet of the rotary kiln 1 and the adjacent end inlet of the rotary kiln 1, and the synchronous connecting rods 71 ​​are rotatably disposed between a pair of support seats 72 along the rotation axis of the rotary kiln 1.

[0047] Specifically, a synchronous connecting rod 7 is provided between the ends of two adjacent rotary kilns 1. The synchronous connecting rod 7 includes several synchronous connecting rods 71 ​​and several support seats 72. Two pairs of support seats 72 are fixedly provided near the end outlet of the rotary kiln 1 and the end inlet of the adjacent rotary kiln 1. Each pair of support seats 72 includes two support seats. Each pair of support seats 72 is arranged along the rotation axis of the rotary kiln 1, and the two pairs of support seats 72 are respectively located on both sides of the rotary kiln 1. The two ends of the synchronous connecting rod 71 can be rotatably placed in the through holes of a pair of support seats 72, so that the synchronous connecting rod 71 connects the ends of the two adjacent rotary kilns 1. Since the synchronous connecting rod 71 can rotate in a pair of support seats 72 and can move along the axis of the support seats 72, and the support seats 72 restrict the lateral swing of the synchronous connecting rod 71, the synchronous connecting rod 71 can ensure that the two adjacent rotary kilns 1 cannot move laterally relative to the axis when rotating, thereby achieving the purpose of synchronous rotation of the two rotary kilns 1.

[0048] Optionally, the support base 72 can be a lug support base that is easy to install and remove.

[0049] Alternatively, please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of another specific embodiment of the synchronous connecting component of the series-connected synchronous combined rotary kiln provided by the present invention. The support base 72 is a long strip-shaped support base to ensure that the synchronous connecting rod 71 is stably installed in the through hole of the support base 72.

[0050] In the second specific embodiment, the synchronous connection mechanism also includes a flexible connector 8. The end outlet of the rotary kiln 1 is connected to the end inlet of the adjacent rotary kiln 1 through the flexible connector 8, which is used to compensate for the displacement between the two adjacent rotary kilns 1 caused by thermal expansion.

[0051] Specifically, one end of the flexible connector 8 is fixed to the end outlet of the rotary kiln 1, and the other end is fixed to the end inlet of the adjacent rotary kiln 1. Since the adjacent two rotary kilns 1 are displaced due to thermal expansion, the flexible connector can compensate for the displacement between the adjacent two rotary kilns 1 caused by thermal expansion, so as to avoid deformation caused by thermal expansion between the adjacent two rotary kilns 1. Thus, the displacement of the rotary kiln 1 caused by thermal expansion will not affect the normal production of the series rotary kiln system.

[0052] In the second specific embodiment, in order to accommodate the displacement caused by the thermal expansion of the two adjacent rotary kilns 1, the outlet of the front screw conveyor 4 is connected to the inlet of the back screw conveyor 5 through a flexible connector 8.

[0053] Furthermore, the flexible connector 8 is a stainless steel corrugated expansion joint, which ensures that the flexible connector 8 has good high temperature resistance and corrosion resistance, thereby improving the service life of the flexible connector 8.

[0054] Please refer to Figure 3 , Figure 3 This is a schematic diagram of a specific embodiment three of the series synchronous combined rotary kiln provided by the present invention.

[0055] In a specific embodiment three, the outer wall of the end outlet of the rotary kiln 1 is provided with a first protruding key, and the inner wall of the end inlet of the adjacent rotary kiln 1 is provided with a first keyway. The first protruding key is slidably inserted into the first keyway along the rotation axis of the rotary kiln 1.

[0056] Specifically, two adjacent rotary kilns 1 are connected by a socket joint. The outer wall of the end outlet of rotary kiln 1 is provided with a first protruding key, and the end inlet of the adjacent rotary kiln 1 is provided with a first keyway. The first protruding key and the first keyway are connected in a fitting manner. The first protruding key extends a certain distance along the rotation axis of the rotary kiln 1. The first protruding key can slide and be locked in the first keyway to compensate for the displacement between the two adjacent rotary kilns 1 caused by thermal expansion, thereby avoiding deformation caused by thermal expansion between the two adjacent rotary kilns 1.

[0057] In the third specific embodiment, the outer wall of the outlet of the front screw conveyor 4 is provided with a second protruding key, and the inner wall of the inlet of the rear screw conveyor 5 is provided with a second keyway. The second protruding key is slidably inserted into the second keyway along the rotation axis of the rotary kiln 1 to accommodate the displacement caused by thermal expansion between two adjacent rotary kilns 1, thereby ensuring that the two screw conveyors can rotate synchronously with the rotary kiln 1 and ensuring the efficiency of solid material conveying.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The series-connected synchronous combined rotary kiln provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A series-connected synchronous combined rotary kiln, characterized in that, The system includes several rotary kilns (1), several material conveying devices, several rotary kiln support devices (2) for supporting the several rotary kilns (1), and a rotary kiln drive device (3) for driving the several rotary kilns (1) to rotate; the rotary kiln support devices (2) are provided near the inlet and outlet of each rotary kiln (1); the several rotary kilns (1) are connected in series and arranged on the same axis of rotation; the outlet of each rotary kiln (1) is connected to the inlet of its adjacent rotary kiln (1) through the material conveying devices; the material conveying devices include: A synchronous connection mechanism is used to control the synchronous rotation of two adjacent rotary kilns. The synchronous connection mechanism is fixed between the ends of the two adjacent rotary kilns (1), and the end outlet of the rotary kiln (1) is connected to the end inlet of its adjacent rotary kiln (1) through the synchronous connection mechanism. The synchronous connection mechanism includes a synchronous connecting rod (7), which includes a plurality of synchronous connecting rods (71) and a plurality of support seats (72); two pairs of support seats (72) are fixedly provided near the end outlet of the rotary kiln (1) and the end inlet of the adjacent rotary kiln (1); the synchronous connecting rod (71) is rotatably disposed between a pair of support seats (72) along the rotation axis of the rotary kiln (1). The synchronous connection mechanism also includes a flexible connector (8), and the end outlet of the rotary kiln (1) is connected to the end inlet of the adjacent rotary kiln (1) through the flexible connector (8) to compensate for the displacement between the two adjacent rotary kilns (1) caused by thermal expansion. A screw conveyor mechanism is used to drive its rotation to convey solid materials. The screw conveyor mechanism is fixed between the sides of two adjacent rotary kilns (1), and the side outlet of the rotary kiln (1) is connected to the side inlet of its adjacent rotary kiln (1) through the screw conveyor mechanism. The spiral conveying mechanism includes two spiral conveyors. The side outlet of the rotary kiln (1) is connected to the inlet of the front spiral conveyor (4). The side inlet of the adjacent rotary kiln (1) is connected to the outlet of the back spiral conveyor (5). The outlet of the front spiral conveyor (4) is connected to the inlet of the back spiral conveyor (5). The outlet of the front-end screw conveyor (4) is connected to the inlet of the back-end screw conveyor (5) via the flexible connector (8).

2. The series-connected synchronous combined rotary kiln according to claim 1, characterized in that, The rotary kiln (1) includes a large-diameter tube body and a small-diameter tube head. The small-diameter tube head is located at both ends of the large-diameter tube body to facilitate connection between the ends of two adjacent rotary kilns (1).

3. The series-connected synchronous combined rotary kiln according to claim 1, characterized in that, The flexible connector (8) is a stainless steel corrugated expansion joint.

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