Rake tooth assembling and disassembling device for multi-hearth roasting furnace in high-temperature state

Abstract

The utility model relates to the technical field of metallurgical devices, and discloses a rake tooth assembly and disassembly device for a multi-hearth roasting furnace in a high-temperature state, which comprises a movable base, a rake tooth assembly and disassembly device and a rake tooth assembly and disassembly device, the lifting table comprises a top plate platform and a lifting mechanism, and the lifting mechanism is arranged on the supporting platform to drive the top plate platform to ascend and descend; the telescopic device is arranged on the top plate platform and can rotationally stretch out and draw back in the plane direction of the top plate platform; the rake tooth sleeve frame is fixed to the telescopic tail end of the telescopic device so as to grab or release the rake teeth. Through remote telescopic operation and high-temperature-resistant design, rake teeth can be disassembled and assembled without waiting for cooling of a furnace body, an operator is located outside the furnace in the whole process and is prevented from entering a high-temperature, strong-alkalinity and closed hearth environment, potential safety hazards such as burning, suffocation and mechanical clamping injury are thoroughly eliminated, shutdown operation is avoided in the operation process, steering, height adjustment and rapid alignment can be achieved, and the operation efficiency is improved. And the production efficiency is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, and in particular to a device for assembling and disassembling rake teeth in a multi-chamber roasting furnace under high temperature conditions. Background Technology

[0002] In the production process of non-ferrous smelting enterprises, roasting is a common method, and multi-hearth roasting furnaces are a commonly used roasting equipment. Currently, commonly used multi-hearth roasting furnaces use a center-feeding system for odd-numbered layers and a wall-feeding system for even-numbered layers. They mainly consist of a motor, reducer, central shaft, rake arms, and rake teeth. The rake arms are mounted on the central shaft, and the rake teeth are mounted on the rake arms. After the furnace charge enters the furnace through the feed inlet, the rotation of the central shaft drives the angled rake teeth to move the material between the odd and even layers. Simultaneously, the rake teeth continuously agitate the material inside the furnace, ensuring uniform mixing, heating, and reaction. In the production of vanadium products, 200-mesh refined slag is mixed with sodium carbonate in a certain proportion and then added to a suitable amount of return slag before entering the multi-hearth roasting furnace for roasting at a high temperature of approximately 800℃. Due to impurities such as manganese ferroenyl and silicon in the refined slag, and the long-term exposure to high temperature and strong alkaline environment, the rake teeth experience significant wear and require regular replacement and maintenance to ensure they can agitate the material and move it within the furnace. Currently, due to limitations in technology and environment, replacing rake teeth requires stopping the machine and waiting for the furnace to cool down. Then, two technicians need to enter the furnace while one technician assists outside to disassemble and reassemble. This not only wastes time and reduces production efficiency, but also may cause damage to the furnace and other equipment and pose safety risks due to frequent start-ups and shutdowns.

[0003] Therefore, there is a need in the existing technology to improve the rake tooth assembly and disassembly device for multi-chamber roasting furnaces under high temperature conditions. Utility Model Content

[0004] In view of this, the purpose of this utility model embodiment is to provide a rake tooth assembly and disassembly device for a multi-hearth roasting furnace under high temperature conditions, which allows for the assembly and disassembly of the rake teeth outside the multi-hearth roasting furnace without cooling, thereby shortening maintenance time, improving equipment utilization, and ensuring personnel safety.

[0005] To achieve the above objectives, this utility model provides a device for assembling and disassembling rake teeth in a multi-hearth roasting furnace under high-temperature conditions, comprising:

[0006] The movable base has a support platform;

[0007] The lifting platform includes a top platform and a lifting mechanism. The lifting mechanism is mounted on the support platform to drive the top platform to rise and fall.

[0008] The telescopic device is installed on the top platform and can rotate and extend in the plane direction of the top platform;

[0009] Rake tooth frame, which is fixed to the telescopic end of the telescopic device to grab or release the rake teeth.

[0010] In some implementations, the support platform has multiple support columns at its bottom, each with a wheel mounted underneath, and a push rod is also provided on the side of the support platform.

[0011] In some implementations, the push rod is connected to the support platform via a hinge, and the wheels include one-way wheels and swivel wheels, with one-way wheels installed away from the push rod and swivel wheels installed closer to the push rod.

[0012] In some implementations, the lifting mechanism is a hand-cranked jack, and the top platform is fixedly connected to the top of the hand-cranked jack.

[0013] In some embodiments, the telescopic device includes:

[0014] Telescopic actuator, fixed inside the top platform;

[0015] A telescopic rod is connected to the output end of a telescopic actuator, which drives the telescopic rod to rotate and extend / retract.

[0016] The connecting rod is detachably connected to the telescopic rod.

[0017] In some implementations, the connecting rod is detachably connected to the telescopic rod via a cross-shaped retaining pin.

[0018] In some embodiments, the rake tooth sleeve is welded to the end of the connecting rod, and its shape matches the rake tooth profile. It is used to fit the rake tooth and is disassembled and assembled through telescopic movement.

[0019] In some implementations, the inner wall of the rake tooth sleeve frame is provided with anti-slip texture.

[0020] In some implementations, the angle between the top of the rake tooth frame and the connecting rod is 30 to 50 degrees.

[0021] In some embodiments, a laser positioner is also provided on the side of the rake tooth frame.

[0022] This utility model has at least the following beneficial technical effects:

[0023] The device provided by this utility model can be remotely extended and retracted and is designed to withstand high temperatures. The rake teeth can be disassembled and assembled without waiting for the furnace to cool down. The operator is outside the furnace throughout the process, avoiding the high temperature, strong alkalinity and closed furnace environment, completely eliminating safety hazards such as burns, suffocation and mechanical pinching. Moreover, the operation can be carried out without stopping the machine. It can be turned and the height can be adjusted for quick alignment, which significantly improves production efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of an embodiment of the multi-chamber roasting furnace rake tooth assembly and disassembly device under high temperature conditions provided by this utility model;

[0026] Figure 2 Figure A is a front view of the rake teeth, Figure B is a side view of the rake teeth, and Figure C is a diagram of the disassembly and assembly state of the rake teeth provided by this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Movable base; 11. Support platform; 12. Support column; 13. One-way wheel; 14. Swivel wheel; 15. Hand push rod; 20. Lifting platform; 21. Top platform; 22. Lifting mechanism; 30. Telescopic device; 31. Telescopic drive; 32. Telescopic rod; 33. Connecting rod; 34. Fixing pin; 40. Rake tooth frame; 41. Rake tooth. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0031] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0033] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] like Figure 1 The image shows a rake tooth assembly / disassembly device for a multi-hearth roasting furnace under high-temperature conditions provided by this utility model, comprising:

[0035] The movable base 10 has a support platform 11;

[0036] The lifting platform 20 includes a top plate platform 21 and a lifting mechanism 22. The lifting mechanism 22 is mounted on the support platform 11 to drive the top plate platform 21 to rise and fall.

[0037] Telescopic device 30 is installed on the top plate platform 21 and can rotate and extend in the plane direction of the top plate platform 21.

[0038] The rake tooth frame 40 is fixed to the telescopic end of the telescopic device 30 to grasp or release the rake teeth 41.

[0039] Furthermore, the support platform 11 has multiple support columns 12 at its bottom, each with a wheel installed underneath. A push rod 15 is also provided on the side of the support platform 11. In some embodiments, the support platform 11 is constructed from 10mm thick steel plates welded into a rectangular frame, serving as the load-bearing base for the entire device. The support columns 12 consist of four Φ50mm steel columns vertically welded to the four corners of the bottom of the support platform 11, with a height of 20-40cm, used to raise the base's ground clearance and prevent uneven ground from affecting movement. Multiple wheels are installed under the support columns 12. One-way wheels 13 are installed at the front end of the support platform 11 (away from the push rod side), using heavy-duty industrial casters with brakes, a wheel diameter of 15cm, and a load capacity of 500kg. Casters 14 are installed at the rear end of the support platform 11 (near the push rod side), using casters of the same specifications, supporting 360° rotation. The one-way wheels 13 restrict the direction of travel, while the casters 14, in conjunction with hinges, enable steering, preventing jamming during movement.

[0040] Preferably, the push rod 15 is made of stainless steel tubing and is connected to the side of the support platform 11 via a hinge. The hinge angle adjustment range is 0~90°, facilitating flexible steering during pushing. The hinge design of the push rod 15 allows the operator to adjust the pushing angle according to their position, reducing labor intensity.

[0041] Furthermore, the lifting mechanism 22 is a hand-cranked jack, and the top platform 21 is fixedly connected to the top of the hand-cranked jack. Preferably, the lifting mechanism 22 is a manual screw jack with a maximum lifting stroke of 500mm, which is fixed to the center of the support platform 11 by bolts. The hand-cranked jack provides stable vertical lifting, is not dependent on electricity, and meets the requirements for high temperature and explosion protection.

[0042] Furthermore, the telescopic device 30 includes:

[0043] Telescopic actuator 31 is fixed inside the top plate platform 21;

[0044] Telescopic rod 32 is connected to the output end of telescopic driver 31;

[0045] The connecting rod 33 is detachably connected to the telescopic rod 32.

[0046] The telescopic actuator 31 is a DC electric push rod (in some embodiments, rated voltage 24V, thrust 3000N), which is embedded in the mounting groove of the top plate platform 21 and fixed by bolts. The electric push rod provides precise telescopic control, and the telescopic stroke is adjustable from 0 to 1.5m to adapt to different furnace depths.

[0047] The telescopic rod 32 is made of stainless steel tube, and its front end is connected to the output end of the electric push rod through a coupling. It can extend and retract with the push rod and rotate ±30° around the axis.

[0048] The connecting rod 33 is a high-temperature resistant alloy rod, and its end is connected to the telescopic rod 32 through a cross-shaped fixing pin 34. Preferably, the pin has a diameter of 10mm and a length of 80mm. The cross-shaped pin enables the connecting rod 33 to be quickly replaced, which is convenient for maintenance or to adapt to different rake arm lengths.

[0049] Furthermore, the rake tooth frame 40 is welded to the end of the connecting rod, and its shape matches the contour of the rake tooth 41. It is used to fit the rake tooth and to achieve assembly and disassembly through telescopic movement.

[0050] Furthermore, the inner wall of the rake tooth frame 40 is provided with anti-slip texture, which can increase friction and reduce the risk of slipping when gripping the rake teeth 41.

[0051] Furthermore, the angle between the top of the rake tooth frame 40 and the connecting rod is 30~50°, which is adaptively adjusted based on the actual angle of the rake teeth.

[0052] Furthermore, a laser locator is also provided on the side of the rake tooth frame 40. The laser locator emits a laser to the rake teeth to assist in aligning the assembly and disassembly positions.

[0053] The specific operating procedure for this device is as follows:

[0054] Step 1: Mobile Positioning

[0055] Release the brake on the caster wheel 14, hold the push rod 15 and push the device to the working port of the multi-hearth roasting furnace, then depress the brake on the caster wheel 14 to lock the device in position.

[0056] Step 2: Height Adjustment

[0057] Turn the handle of the hand-cranked jack 22 to drive the top platform 21 to rise. Confirm that the horizontal position of the frame 40 matches the rake teeth. You can judge whether they match by aligning the laser positioner spot with the height of the rake tooth lug.

[0058] Step 3: Remove the old rake teeth

[0059] Activate the telescopic actuator 31 to push the telescopic rod 32 into the furnace, causing the sleeve 40 to engage with the old rake teeth. Figure 2 The diagram shown is a schematic of the disassembly and assembly process.

[0060] Shake the jack 22 to lower the frame 40 by 5mm, disengaging it from the rake arm chute;

[0061] The telescopic rod 32 is retracted to bring the old rake teeth out of the furnace, where they are removed and replaced with new ones.

[0062] Step 4: Install new rake teeth

[0063] Place the new rake teeth into the frame 40, ensuring that the anti-slip pad layer adheres to the tooth surface;

[0064] Adjust the rotation angle of the telescopic rod 32, push the telescopic rod 32 to send the rake teeth into the chute, and shake the jack 22 to fine-tune the height until the hanging ear is engaged;

[0065] Retract the telescopic rod 32 to complete the single-tooth installation, and repeat until all rake teeth have been replaced.

[0066] The above are exemplary embodiments disclosed in this utility model. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this utility model as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this utility model may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0067] It should be understood that, as used herein, the singular form “a” is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, “and / or” refers to any and all possible combinations of one or more of the associated listed items.

[0068] The embodiment numbers disclosed in the above-described embodiments of the present utility model are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0069] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the framework of the present invention, technical features of the above embodiments or different embodiments can also be combined, and many other variations of different aspects of the present invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for assembling and disassembling rake teeth in a multi-chamber roasting furnace under high temperature conditions, characterized in that, include: A movable base having a support platform; A lifting platform, comprising a top platform and a lifting mechanism, wherein the lifting mechanism is mounted on the support platform to drive the top platform to rise and fall. A telescopic device is disposed on the top plate platform and is rotatable and telescopic in the plane direction of the top plate platform; A rake tooth frame is fixed to the telescopic end of the telescopic device to grip or release the rake teeth.

2. The rake tooth assembly and disassembly device for a multi-chamber roasting furnace under high temperature conditions according to claim 1, characterized in that, The support platform has multiple support columns at its bottom, each with a wheel installed underneath, and a push rod is also provided on the side of the support platform.

3. The rake tooth assembly and disassembly device for a multi-chamber roasting furnace under high temperature conditions according to claim 2, characterized in that, The push rod is connected to the support platform via a hinge. The wheels include one-way wheels and swivel wheels. One-way wheels are installed away from the push rod, and swivel wheels are installed closer to the push rod.

4. The rake tooth assembly and disassembly device for a multi-chamber roasting furnace under high temperature conditions according to claim 1, characterized in that, The lifting mechanism is a hand-cranked jack, and the top platform is fixedly connected to the top of the hand-cranked jack.

5. The rake tooth assembly and disassembly device for a multi-chamber roasting furnace under high temperature conditions according to claim 1, characterized in that, The telescopic device includes: A telescopic actuator is fixed inside the top plate platform; A telescopic rod, wherein the telescopic rod is connected to the output end of the telescopic driver, and the output end drives the telescopic rod to rotate and extend; The connecting rod is detachably connected to the telescopic rod.

6. The rake tooth assembly and disassembly device for a multi-chamber roasting furnace under high temperature conditions according to claim 5, characterized in that, The connecting rod is detachably connected to the telescopic rod via a cross-shaped fixing pin.

7. The rake tooth assembly and disassembly device for a multi-hearth roasting furnace under high temperature conditions according to claim 5, characterized in that, The rake tooth sleeve is welded to the end of the connecting rod. Its shape matches the rake tooth contour and is used to fit the rake tooth and to be disassembled and assembled through telescopic movement.

8. The rake tooth assembly and disassembly device for a multi-chamber roasting furnace under high temperature conditions according to claim 1, characterized in that, The inner wall of the rake tooth frame is provided with anti-slip texture.

9. The rake tooth assembly and disassembly device for a multi-chamber roasting furnace under high temperature conditions according to claim 5, characterized in that, The angle between the top of the rake tooth frame and the connecting rod is 30~50°.

10. The rake tooth assembly and disassembly device for a multi-hearth roasting furnace under high temperature conditions according to claim 1, characterized in that, A laser positioner is also provided on the side of the rake tooth frame.

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