Praseodymium neodymium oxide rotary kiln dust collecting device convenient to clean

Abstract

The utility model relates to rare earth production technical field especially, more particularly to a kind of praseodymium oxide neodymium rotary kiln dust collecting device of easy cleaning, solve the dust collecting bin replacement efficiency of praseodymium oxide neodymium rotary kiln dust collecting equipment in prior art, need to stop machine replacement problem, a kind of praseodymium oxide neodymium rotary kiln dust collecting device of easy cleaning, including dust collecting box, the top end fixed mounting of dust collecting box has collecting box upper cover, and the other end of collecting box upper cover is provided with inlet pipe, the collecting box upper cover and inlet pipe are movably connected together by quick release base between;The middle part of inlet pipe is equipped with open-close structure, the utility model realizes the quick disassembly of dust collecting box and inlet pipe by quick release base, with the help of open-close structure, collecting box can be replaced without stopping, improve replacement efficiency, reduce dust leakage and material loss, guarantee rotary kiln continuous production.

Description

Technical Field

[0001] This utility model relates to the field of rare earth production technology, and in particular to a dust collection device for praseodymium-neodymium oxide rotary kilns that is easy to clean. Background Technology

[0002] In the rare earth production field, praseodymium oxide (PBO) is a key raw material for preparing rare earth permanent magnet materials. Its production process often relies on dynamic calcination in rotary kilns, which generate a large amount of PBO-containing dust during operation. Direct emission of this dust not only results in a serious waste of rare earth resources but also pollutes the surrounding environment. Meanwhile, PBO dust has high recycling value, and efficient recycling of this dust is of great significance for improving production efficiency and reducing resource consumption. Currently, there are already equipment available in the industry for recovering dust from praseodymium oxide rotary kilns, such as a praseodymium oxide rotary kiln dust recovery device proposed in Chinese patent CN222900620U. This patent uses a keel dust collection bag inside a dust collection tower for initial filtration of dust-laden exhaust gas, followed by secondary spray filtration using a spray tower. This dual filtration structure improves dust recovery efficiency to a certain extent. Furthermore, its collection box adopts an insert structure with an upper box and a lower box, which, together with a spring rod, allows for separation of the collection box from the dust collection tower's discharge pipe, enabling dust collection without stopping the machine. However, the aforementioned patents only address some of the problems of low dust recovery efficiency and the need for traditional equipment to be shut down for collection. They do not optimize the ease of replacement and sealing of the dust collection bin. The collection bin and the discharge pipe are only connected by a sleeve insertion, lacking a stable locking structure. In the vibration environment of the rotary kiln, the interface is prone to loosening, leading to dust leakage. Furthermore, when replacing the collection bin, the upper insertion box must be manually pressed to detach from the sleeve. There is no precise guidance or quick unlocking structure. During operation, misalignment can easily prolong the replacement time, making it difficult to adapt to the high-efficiency and continuous dust recovery requirements in large-scale production.

[0003] Therefore, we propose an easy-to-clean dust collection device for praseodymium-neodymium oxide rotary kilns to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a dust collection device for praseodymium oxide rotary kilns that is easy to clean, which solves the problems of complex operation, low efficiency and the need to stop production during the replacement process of dust collection equipment for praseodymium oxide rotary kilns in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dust collection device for a praseodymium-neodymium oxide rotary kiln that is easy to clean includes a dust collection box, a collection box cover fixedly installed on the top of the dust collection box, and an inlet pipe provided at the other end of the collection box cover, and further includes: The top cover of the collection box and the inlet pipe are movably connected together via a quick-release base; An opening and closing mechanism is installed in the middle of the inlet pipe.

[0006] Preferably, the quick-release base includes a base and a connector, with the base fixedly installed on the side of the inlet pipe near the dust collection box, and the base is trapezoidal; A set of sliding grooves is provided on both sides of the base near the inlet pipe; and a set of grooves is provided in the middle of the top of the base. The base has two sets of equally spaced slots near the groove, and the center of the base groove has a connection port that communicates with the inlet pipe.

[0007] Preferably, the quick-release base also includes an insertion interface and a slider, and the insertion interface is provided on the side of the top of the collection box cover corresponding to the connection port in the inlet tube; A set of sliders is fixedly installed on both sides of the top of the collection box cover near the insertion interface, and both sets of sliders can be slidably installed together with the base.

[0008] Preferably, a set of slots is provided on both sides inside the slider, and a set of pressing plates is inserted between the two sets of parallel slider slots. Two sets of pressing plates are fixedly installed with a set of inserts on both sides near the inside of the slider, and the inserts in the pressing plates are engaged with the slots in the base. Each of the two sets of sliders has a set of springs fixedly installed in multiple slots, and all the springs are fixedly connected to the pressing plate.

[0009] Preferably, the opening and closing structure includes a control box, a threaded screw, and a sliding plate. The control box is fixedly installed on one side of the inlet pipe, and the threaded screw is rotatably installed inside the control box. The other end of the threaded screw extends through one side of the control box and is fixedly installed with a handle. A sliding plate is slidably mounted on the side of the control box away from the threaded screw, and the middle part of the sliding plate is rotatably mounted together with the threaded screw. A straight groove is provided in the middle of the sliding plate, and a set of pin grooves are provided on both sides of the straight groove.

[0010] Preferably, the opening and closing structure further includes a first blade, a second blade, a fixing rod and a sleeve. The sleeve is sleeved in the straight groove of the sliding plate, and an upper pin is fixedly installed on one side of the sleeve, and the upper pin is engaged with the pin groove of the sliding plate. A second blade is fixedly installed at the bottom end of the sleeve, and a fixing rod is sleeved in the middle of the sleeve, with a first blade fixedly installed at the bottom end of the fixing rod. A lower pin is fixedly installed on one side of the top of the fixed rod, and the lower pin of the fixed rod is engaged with the pin groove of the sliding plate.

[0011] This utility model has at least the following beneficial effects: The dust collection chamber is highly efficient and easy to replace: The device uses a trapezoidal base and a quick-release structure with sliding grooves and slots, along with the linkage of sliders, pressing plates and springs, to achieve quick positioning and unlocking of the collection box and the inlet pipe. No complicated tools are needed; simply press the pressing plate to unlock and slide to complete the disassembly and assembly, shortening the collection chamber replacement time. At the same time, the trapezoidal base reduces dust accumulation and avoids dust affecting the disassembly and assembly operation, further improving replacement efficiency.

[0012] This utility model also has the following beneficial effects: It enables replacement without stopping the machine and has good dust sealing: relying on the first and second semicircular blades in the opening and closing structure, it can completely seal the inlet pipe when closed, blocking the dust inside the pipe. At this time, the collection box can be replaced safely without stopping the machine; and the blades are engaged with the pins of the sleeve and the fixed rod and the pin slot of the sliding plate, ensuring stable position during the opening and closing process. Combined with the precise docking of the insertion interface and the connection port in the quick-release structure, it effectively avoids dust leakage during replacement and collection, reduces material loss and environmental pollution, and ensures continuous production of the rotary kiln. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the inlet tube structure of this utility model; Figure 3 This is a schematic diagram of the structure of the collection box cover of this utility model; Figure 4 This is a partial structural diagram of the collection box cover of this utility model; Figure 5 This is a schematic diagram of the opening and closing structure of this utility model; Figure 6 This is a schematic diagram of the disassembled opening and closing structure of this utility model.

[0015] In the diagram: 1. Dust collection box; 2. Inlet pipe; 3. Collection box cover; 4. Opening and closing structure; 5. Base; 6. Connection port; 7. Insertion interface; 8. Slider; 9. Press plate; 10. Spring; 11. Control box; 12. Threaded screw; 13. Sliding plate; 14. First blade; 15. Second blade; 16. Fixing rod; 17. Sleeve. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Reference Figure 1-6 A dust collection device for a rotary kiln of praseodymium-neodymium oxide that is easy to clean includes a dust collection box 1, a collection box cover 3 fixedly installed on the top of the dust collection box 1, and an inlet pipe 2 provided at the other end of the collection box cover 3, and further includes: The top cover 3 of the collection box and the inlet pipe 2 are movably connected together by a quick-release base; An opening and closing structure 4 is installed in the middle of the inlet pipe 2.

[0018] Furthermore, the quick-release base includes a base 5 and a connection port 6. The base 5 is fixedly installed on the side of the inlet pipe 2 near the dust collection box 1, and the base 5 is trapezoidal. A set of sliding grooves is provided on both sides of the base 5 near the inlet pipe 2; and a set of grooves is provided in the middle of the top of the base 5. The base 5 has two sets of equally spaced slots near the groove, and the center of the groove of the base 5 has a connection port 6 that connects to the inlet pipe 2. The trapezoidal shape of the base 5 can reduce the accumulation of dust at the connection point and avoid the disassembly and assembly operations due to dust accumulation. The sliding grooves on both sides can guide the subsequent slider 8 to slide accurately. Together with the top groove, it can realize the quick positioning of the base 5 and the top cover 3 of the collection box and prevent dust leakage caused by misalignment. The equally spaced slots next to the groove provide a stable point for connection locking and ensure the reliability of the structure after installation. The connection port 6 in the middle that connects to the inlet pipe 2 can ensure the smooth dust conveying path and avoid the impact of the path blockage on the collection efficiency. The overall structure provides a stable and accurate connection basis for the quick replacement of the dust collection chamber.

[0019] Furthermore, the quick-release base also includes a plug interface 7 and a slider 8. The top of the collection box cover 3 is provided with a plug interface 7 on one side corresponding to the connection port 6 in the inlet tube 2. A set of sliders 8 are fixedly installed on both sides of the top of the collection box cover 3 near the insertion interface 7. Both sets of sliders 8 can be slidably installed with the base 5. The insertion interface 7 at the top of the collection box cover 3 corresponds precisely to the connection port 6 of the inlet pipe 2, which can reduce dust leakage at the interface, ensure the sealing of the praseodymium-neodymium oxide dust collection process, and avoid material loss or environmental pollution. The sliders 8 on both sides are slidably installed with the base 5, so that the collection box cover 3 and the inlet pipe 2 can be disassembled and assembled by sliding without the need for complicated tools. This greatly shortens the docking and separation time and provides a convenient operating structure for the rapid replacement of the dust collection bin, which is suitable for the continuous operation rhythm of the rotary kiln.

[0020] Furthermore, a set of slots is provided on both sides inside the slider 8, and a set of pressing plates 9 is inserted between the parallel slots of the two sets of sliders 8. Two sets of pressing plates 9 are each fixedly installed with a set of inserts on both sides near the inside of the slider 8, and the inserts in the pressing plates 9 are engaged with the slots in the base 5. Each of the two sets of sliders 8 has a set of springs 10 fixedly installed in its multiple slots, and all sets of springs 10 are fixedly connected to the pressing plate 9. The insert of the pressing plate 9 engages with the slot of the base 5, which can firmly lock the relative position of the base 5 and the slider 8, and prevent the connection from loosening due to vibration during the operation of the device. The springs 10 provide a continuous restoring force for the pressing plate 9, ensuring that the insert is always tightly fitted with the slot, further enhancing the reliability of the connection. When the dust collection chamber needs to be replaced, simply press the pressing plate 9 to compress the springs 10 and disengage them from the slot, achieving quick unlocking. The whole process does not require disassembling bolts or other parts, making the operation simple and efficient, effectively shortening the replacement time of the dust collection chamber, and ensuring the convenience and safety of the replacement process.

[0021] Furthermore, the opening and closing structure 4 includes a control box 11, a threaded screw 12, and a sliding plate 13. The control box 11 is fixedly installed on one side of the inlet pipe 2, and the threaded screw 12 is rotatably installed inside the control box 11. The other end of the threaded screw 12 extends through one side of the control box 11 and is fixedly installed with a handle. A sliding plate 13 is slidably mounted on the side of the control box 11 away from the threaded screw 12, and the middle part of the sliding plate 13 is rotatably mounted together with the threaded screw 12. The sliding plate 13 has a straight groove in the middle, and a set of pin slots are provided on both sides of the straight groove. By turning the handle, the threaded screw 12 can be rotated, thereby controlling the sliding plate 13 to slide along the control box 11. The operation is simple and the adjustment accuracy is high. The straight groove of the sliding plate 13 provides installation and movement space for the sleeve 17 and the fixing rod 16. The pin slots on both sides can fix the position of the sleeve 17 and the fixing rod 16, ensuring the stability of the subsequent blade movement trajectory and avoiding sealing failure due to structural displacement. This provides a reliable structural guarantee for the subsequent dust blocking through the blade sealing pipe.

[0022] Furthermore, the opening and closing structure 4 also includes a first blade 14, a second blade 15, a fixing rod 16 and a sleeve 17. The sleeve 17 is sleeved in the straight groove of the sliding plate 13, and an upper pin is fixedly installed on one side of the sleeve 17, and the upper pin is engaged with the pin groove of the sliding plate 13. The bottom end of the sleeve 17 is fixedly installed with a second blade 15, and the middle part of the sleeve 17 is sleeved with a fixing rod 16, and the bottom end of the fixing rod 16 is fixedly installed with a first blade 14. A lower pin is fixedly installed on one side of the top of the fixing rod 16, and the lower pin of the fixing rod 16 is engaged with the pin groove of the sliding plate 13. The two semi-circular first blades 14 and second blades 15 can completely seal the inlet pipe 2 when closed, which can block the dust in the inlet pipe 2. At this time, the dust collection box 1 can be disassembled and replaced without stopping the machine, avoiding the decrease in production efficiency caused by machine stoppage. After replacement, the first blades 14 and second blades 15 are opened by the control structure, and the dust can continue to fall into the new dust collection box 1, ensuring the continuity of the collection process. At the same time, the upper pin of the sleeve 17 and the lower pin of the fixing rod 16 are engaged with the pin groove of the sliding plate 13, which can ensure the stability of the blade position during the opening and closing process, and avoid dust leakage due to blade displacement. This not only ensures the sealing of the replacement process, but also reduces the loss of praseodymium oxide dust and environmental pollution.

[0023] In summary: During normal operation of the praseodymium-neodymium oxide rotary kiln, the dust collection device first rotates the handle on the outside of the control box 11 in the opening and closing structure 4, which drives the threaded screw 12 inside the control box 11 to rotate. The threaded screw 12 further drives the sliding plate 13, which is rotatably mounted with it, to slide along the control box 11. This causes the sliding plate 13 to drive the sleeve 17 and the fixed rod 16 to move through the pin groove. Finally, the second blade 15 connected to the sleeve 17 and the first blade 14 connected to the fixed rod 16 are fully opened, opening the dust passage into the pipe 2. Simultaneously, the slider 8 of the quick-release base's collection box cover 3 slides into place with the base 5 of the inlet pipe 2. The insert block of the pressing plate 9 inside the slider 8 engages with the slot of the base 5 under the restoring force of the spring 10. The insertion interface 7 of the collection box cover 3 also precisely aligns with the connection port 6 of the base 5, forming a sealed and stable passageway. This ensures that the praseodymium oxide and neodymium oxide dust generated by the rotary kiln can smoothly pass through the inlet pipe 2, connection port 6, and insertion interface 7 into the dust collection box 1, achieving stable collection. When the dust collection box 1 is full and needs replacement... First, rotate the handle to drive the threaded screw 12 to rotate in the opposite direction, which in turn drives the sliding plate 13 to slide in the opposite direction, causing the first blade 14 and the second blade 15 to move closer to the center of the inlet pipe 2 and completely connect to seal the inlet pipe 2, blocking the dust inside the inlet pipe 2. Then, press the pressing plate 9 inside the slider 8 to compress the spring 10 and cause the insert to disengage from the slot. Pull the top cover 3 of the collection box along the sliding groove of the base 5 to separate the dust collection box 1 from the inlet pipe 2. Then, align the slider 8 of the top cover 3 of the empty new dust collection box 1 with the base 5. The slide is pushed, and after the insertion interface 7 aligns with the connection port 6, the pressing plate 9 is released. The spring 10 pushes the insertion block to re-engage with the slot to complete the fixation. Finally, the handle is turned again to drive the threaded screw 12 to rotate in the forward direction, causing the first blade 14 and the second blade 15 to separate and open the inlet pipe 2, allowing the dust to continue falling into the new collection box. The whole process does not require stopping the machine. At the same time, the quick-release structure enables the rapid replacement of the collection box, which not only ensures the continuous operation of the rotary kiln, but also improves the efficiency of dust collection and cleaning, and avoids dust leakage and material loss.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust collection device for a rotary kiln of praseodymium-neodymium oxide that is easy to clean, comprising a dust collection box (1), wherein a collection box cover (3) is fixedly installed on the top of the dust collection box (1), and an inlet pipe (2) is provided at the other end of the collection box cover (3), characterized in that, Also includes: The collection box cover (3) and the inlet pipe (2) are movably connected together by a quick-release base; An opening and closing structure (4) is installed in the middle of the inlet pipe (2).

2. The dust collection device for praseodymium oxide rotary kilns according to claim 1, characterized in that, The quick-release base includes a base (5) and a connection port (6). The base (5) is fixedly installed on the side of the inlet pipe (2) near the dust collection box (1), and the base (5) is trapezoidal. The base (5) has a set of sliding grooves on both sides near the inlet pipe (2); and a set of grooves is provided in the middle of the top of the base (5). The base (5) has two sets of equally spaced slots near the groove, and the center of the groove of the base (5) has a connection port (6) that communicates with the inlet pipe (2).

3. The dust collection device for a praseodymium-neodymium oxide rotary kiln that is easy to clean according to claim 2, characterized in that, The quick-release base also includes a plug-in interface (7) and a slider (8). The top of the collection box cover (3) is provided with a plug-in interface (7) on one side corresponding to the connection port (6) in the inlet pipe (2). A set of sliders (8) are fixedly installed on both sides of the top of the collection box cover (3) near the insertion interface (7), and both sets of sliders (8) can be slidably installed together with the base (5).

4. The dust collection device for praseodymium-neodymium oxide rotary kilns that is easy to clean according to claim 3, characterized in that, Both sides of the slider (8) are provided with a set of slots, and a set of pressing plates (9) are inserted between the parallel slots of the two sets of sliders (8). Both sets of pressing plates (9) are fixedly installed with a set of inserts on both sides near the inside of the slider (8), and the inserts in the pressing plates (9) are engaged with the slots in the base (5); Each of the two sets of sliders (8) has a set of springs (10) fixedly installed in multiple slots, and the multiple sets of springs (10) are fixedly connected to the pressing plate (9).

5. The dust collection device for a praseodymium-neodymium oxide rotary kiln that is easy to clean according to claim 1, characterized in that, The opening and closing structure (4) includes a control box (11), a threaded screw (12) and a sliding plate (13). The control box (11) is fixedly installed on one side of the inlet pipe (2), and the threaded screw (12) is rotatably installed inside the control box (11). The other end of the threaded screw (12) extends through one side of the control box (11) and is fixedly installed with a handle. The control box (11) has a sliding plate (13) slidably mounted on the side opposite to the threaded screw (12), and the middle part of the sliding plate (13) is rotatably mounted together with the threaded screw (12); The sliding plate (13) has a straight groove in the middle, and a set of pin grooves are respectively provided on both sides of the straight groove.

6. The dust collection device for a praseodymium-neodymium oxide rotary kiln, which is easy to clean, as described in claim 5, is characterized in that... The opening and closing structure (4) also includes a first blade (14), a second blade (15), a fixing rod (16) and a sleeve (17). The sleeve (17) is sleeved in the straight groove of the sliding plate (13), and an upper pin is fixedly installed on one side of the sleeve (17), and the upper pin is engaged with the pin groove of the sliding plate (13). The bottom end of the sleeve (17) is fixedly installed with a second blade (15), and a fixing rod (16) is sleeved in the middle of the sleeve (17), and the bottom end of the fixing rod (16) is fixedly installed with a first blade (14). A lower pin is fixedly installed on one side of the top of the fixed rod (16), and the lower pin of the fixed rod (16) is engaged with the pin groove of the sliding plate (13).

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