A melting device for producing rock wool

Abstract

The utility model relates to the technical field of rock wool production equipment, concretely is a kind of melting device for producing rock wool, including furnace body, top cover and dust collecting mechanism, furnace body is detachably provided with multiple sealing plates;Top cover is distributed above furnace body, multiple electric arc rods are slidably arranged on top cover;Dust collecting mechanism is arranged in multiple groups along annular on furnace body and top cover;Dust collecting mechanism includes two dust collecting assemblies oppositely arranged on furnace body and top cover and drive assembly arranged on furnace body;Dust collecting assembly includes air inlet assembly arranged on top cover and multiple dust absorption nets arranged on filter box;Rotary frame is provided with arc net. The utility model is rotatably arranged rotary frame between furnace body and filter box, arc net on rotary frame collects impurities in waste gas in the process of rotation, there is always gap between rotary frame and furnace body, and the flow speed of waste gas is not affected, to guarantee the heat dissipation speed of device.

Description

Technical Field

[0001] This utility model relates to the technical field of rock wool production equipment, specifically to a melting device for producing rock wool. Background Technology

[0002] Rock wool, an inorganic fiber made by high-temperature melting and fiberization, uses natural rocks such as basalt, gabbro, dolomite, iron ore, and bauxite as its main raw materials. Due to its excellent heat insulation, sound insulation, and fire resistance properties, it is widely used in building insulation, industrial equipment insulation, noise control and other fields. The efficiency and stability of the raw material melting process in its production directly determine the quality of rock wool products.

[0003] In rock wool production, the electric arc furnace is the core equipment for achieving high-temperature melting of raw materials. Chinese patent CN222043272U discloses an electric arc furnace that is fixed by support legs. The furnace body has a smelting pool and a molten steel pool inside. The electric arc generates high-temperature melting of steel (analogous to the melting of rock wool raw materials). At the same time, the molten steel pool intercepts dust and iron filings, preventing impurities from entering the blower, and the airflow carries away the heat inside the furnace for heat dissipation. However, in practical applications, existing technologies and similar rock wool melting devices rely solely on the molten steel pool for initial impurity interception. A large amount of fine dust still flows with the exhaust gas towards the dust collection screen. Over time, this dust fills the gaps in the screen, significantly reducing the exhaust gas velocity and preventing timely heat dissipation. This not only affects the rock wool melting efficiency but may also shorten the device's lifespan due to high-temperature accumulation. Furthermore, the lack of a dedicated air inlet positioning and fixing structure makes it easy for exhaust gas to deviate from its path into the furnace, hindering the efficient collection of impurities by the dust collection mechanism. Some exhaust gas may even leak from undesigned channels. When the arc rod completes the melting process and resets, rock wool material easily adheres to its surface. Long-term accumulation of residual material affects the arc rod's heating efficiency and may even damage its structure due to high-temperature carbonization. Finally, the sealing plate on the furnace body is only fixed via a detachable connection without a dedicated sealing structure. High-temperature exhaust gas generated during melting easily leaks from the gap between the sealing plate and the furnace body, polluting the environment and reducing the impurity collection efficiency of the dust collection mechanism. In addition, if a rotating impurity collection component is installed in the existing device, its detachable connection with the drive rod often lacks precise positioning and stable fixing structure. During disassembly and maintenance, installation misalignment is prone to occur, resulting in asynchronous rotation and affecting the impurity collection effect. The dust collection net is in contact with high-temperature exhaust gas for a long time, and the surface temperature is high. When operators replace the dust collection net, there is no heat insulation protection, which can easily lead to burn accidents. Utility Model Content

[0004] The purpose of this utility model is to provide a melting device for producing rock wool that can improve melting efficiency, extend device life, and ensure operational safety, so as to solve the problems of easy clogging of dust collection nets, unstable air intake, raw material residue, poor sealing, inconvenient maintenance, and low safety of existing rock wool melting devices.

[0005] This utility model is achieved through the following technical solution: a melting device for producing rock wool, comprising: The furnace body has multiple removable sealing plates. The top cover is located above the furnace body, and multiple electric arc rods for generating high-temperature melting rock wool raw materials are slidably installed on the top cover. The dust collection mechanism comprises multiple sets arranged in a ring around the circumference of the furnace body and the top cover. The dust collection mechanism includes two dust collection components arranged opposite each other on the furnace body and the top cover, and a drive component on the furnace body for driving the dust collection components. Each dust collection component includes an air inlet component on the top cover for guiding exhaust gas into the furnace body, multiple driven rods rotatably mounted on the furnace body, a first bevel gear fixedly mounted on each of the driven rods, two rotating frames detachably mounted on each of the driven rods and distributed opposite each other along the axial direction of the driven rods, a connecting pipe connected to the furnace body at one end and sequentially connected in series, a filter box, and a fan, and multiple dust-collecting screens fixedly mounted inside the filter box for filtering impurities in the exhaust gas. An arc-shaped screen for capturing impurities in the exhaust gas is fixedly mounted on the rotating frame.

[0006] The working principle of this technical solution is as follows: the electric arc rod generates high temperature through electric arc discharge, which directly acts on the rock wool raw material inside the furnace, causing the raw material to reach a molten state, meeting the core process requirements before rock wool fiberization. The fan generates negative pressure, driving the directional flow of dust-laden exhaust gas generated during the melting process. The drive assembly drives the driven rod and rotating frame to rotate. The arc-shaped mesh on the rotating frame dynamically intercepts and captures some dust and debris, reducing the total amount of impurities entering the filter box. Simultaneously, a gap is always maintained between the rotating frame and the inner wall of the furnace to prevent obstruction of the exhaust gas flow rate, ensuring that heat from the furnace is smoothly discharged with the exhaust gas and guaranteeing heat dissipation efficiency. The exhaust gas, pre-treated by the arc-shaped mesh, enters the filter box through a connecting pipe. The dust-collecting mesh inside the filter box further intercepts remaining fine impurities, achieving secondary purification of the exhaust gas and preventing impurities from entering the fan and damaging the equipment.

[0007] To better realize this utility model, the air inlet assembly further includes a limiting plate fixedly mounted on the top cover, two clamping frames rotatably mounted on the top cover, and an air inlet pipe clamped and fixed between the two clamping frames and abutting against the limiting plate; each of the two clamping frames is provided with a threaded through hole for fixing the air inlet pipe by fasteners.

[0008] To better realize this utility model, the air inlet pipe is further defined as a right-angle pipe, with one end of the right-angle pipe being adapted and connected to the top cover, and the other end being used to guide external exhaust gas into the furnace body in a directional manner.

[0009] To better realize this utility model, the drive assembly further includes a maintenance plate detachably mounted on the furnace body for inspecting the internal components of the drive assembly, a motor fixedly mounted on the furnace body for providing driving force, a drive rod fixedly connected at one end to the output end of the motor, and a second bevel gear fixedly mounted at the end of the drive rod away from the motor; the first bevel gear and the second bevel gear mesh with each other to transmit the driving force of the motor to the driven rod.

[0010] To better realize this utility model, the end face of the dust collection net near the operator's replacement side is further provided with a heat insulation plate to prevent the operator from being burned when replacing the dust collection net.

[0011] To better realize this utility model, the electric arc rod further includes an electric arc rod body for generating high temperature, and an inclined ring fixedly sleeved on the outer circumferential surface of the electric arc rod body; the top end of the inclined ring abuts against the bottom end of the top cover, and the inclined surface of the inclined ring faces the inside of the furnace body, for guiding the residual rock wool raw material when the electric arc rod is reset to slide into the furnace body.

[0012] To better realize this utility model, an annular sealing gasket is further provided on one edge of the sealing plate facing the inside of the furnace body. The sealing gasket is made of high temperature resistant silicone and has a thickness of 3mm to 5mm. The sealing gasket is tightly attached to the sealing plate and the inner wall of the furnace body.

[0013] To better realize this utility model, the detachable connection between the rotating frame and the driven rod is further provided with a fastening bolt and a positioning pin. The driven rod is provided with a positioning hole that matches the positioning pin. The fastening bolt passes through the mounting lug of the rotating frame and the threaded hole of the driven rod in sequence. The positioning pin is inserted into the positioning hole to restrict the circumferential rotation of the rotating frame relative to the driven rod.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) This utility model sets up a rotating frame with an arc-shaped mesh in the dust collection component and drives the rotating frame to rotate in conjunction with the drive component to achieve dynamic pretreatment of impurities in the exhaust gas. During the rotation, the arc-shaped mesh can actively capture some dust and debris, reduce the total amount of impurities entering the subsequent dust collection mesh, and reduce the probability of the dust collection mesh gaps being filled from the source. At the same time, a gap is always reserved between the rotating frame and the furnace body to ensure that the exhaust gas flow rate is not obstructed and to ensure the stable melting efficiency of rock wool raw materials.

[0015] (2) In this utility model, the air inlet assembly fixes the air inlet pipe through the structure of the limiting plate and the double clamping frame: the limiting plate restricts the displacement of the air inlet pipe and avoids the deviation of the air inlet path; the clamping frame clamps the air inlet pipe with fasteners through threaded through holes to ensure that the air inlet pipe is installed firmly; at the same time, the air inlet pipe is set as a right-angle pipe, which can be adapted to the installation position of the top cover and the furnace body, so as to realize the directional entry of exhaust gas into the furnace body, avoid exhaust gas leakage or air inlet disorder, and further improve the dust collection mechanism's efficiency in collecting impurities. In addition, the air inlet assembly is modularly designed. If a certain air inlet channel is blocked, it can be disassembled and maintained separately without affecting the operation of the overall device. (3) In this utility model, the electric arc rod adopts a structure of a main body and an inclined ring. The top of the inclined ring abuts against the bottom of the top cover. When the electric arc rod completes the melting operation and resets, the rock wool material adhering to its surface will slide down along the inclined surface of the inclined ring into the furnace body, avoiding the accumulation of material on the surface of the electric arc rod. This not only prevents the residual material from damaging the electric arc rod due to high temperature carbonization, but also avoids the residual material from affecting the heating uniformity of subsequent melting operations, significantly extending the service life of the electric arc rod and the entire device. (4) This utility model provides a high-temperature resistant silicone ring sealing gasket on the edge of the sealing plate facing the inside of the furnace body. The sealing gasket can fit tightly with both the sealing plate and the inner wall of the furnace body, filling the gap between the sealing plate and the furnace body. This effectively prevents high-temperature exhaust gas from leaking out of the gap, thus avoiding environmental pollution and ensuring that all exhaust gas flows through the dust collection mechanism for impurity filtration, improving dust collection efficiency, and reducing the thermal damage of high-temperature exhaust gas to the external components of the furnace body. (5) The present invention fixes the heat insulation plate on the end face of the dust collection net close to the operator's replacement side, which can block the heat transfer of the dust collection net, avoid the operator being burned by contact with the high temperature dust collection net when replacing the dust collection net, and significantly improve the safety of operation. (6) In this utility model, the drive assembly realizes the power transmission between the motor and the driven rod through two bevel gears. The bevel gear transmission is adapted to the spatial structure of the motor being installed horizontally and the driven rod being arranged vertically, resulting in high transmission efficiency and stable operation. At the same time, the furnace body is equipped with a maintenance plate. After removing the maintenance plate, the motor, drive rod, bevel gear and other components can be maintained directly without disassembling the entire furnace body, thus reducing the difficulty of maintenance. (7) The components such as the air inlet pipe, sealing gasket, and dust collection net in this utility model are all designed to withstand high temperatures; the dust collection mechanism is arranged in multiple groups around the circumference of the furnace body, which can be adapted to different specifications of furnace bodies, ensuring that the exhaust gas is evenly discharged from each area of ​​the furnace body and filtered; the overall structure takes into account efficient melting, impurity filtration, safe operation, and convenient maintenance, and can be directly applied to large-scale rock wool production, which has extremely high practical value and is suitable for widespread application. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural schematic diagram of the dust collection mechanism in this utility model; Figure 3 This is a schematic diagram of the air intake assembly in this utility model; Figure 4 This is a schematic diagram of the transmission structure of the drive assembly and the driven rod in this utility model.

[0017] Wherein: 1—furnace body, 2—top cover, 3—arc rod, 31—arc rod main body, 32—inclined ring, 4—sealing plate, 5—driven rod, 6—rotating frame, 7—connecting pipe, 8—filter box, 9—heat insulation plate, 10—dust suction net, 11—fan, 13—maintenance plate, 14—first bevel gear, 15—drive rod, 16—second bevel gear, 17—motor, 18—limiting plate, 19—air inlet pipe, 20—clamping frame. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly including one or more of the feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example 1: The main structure of this embodiment is as follows: Figure 1 , Figure 2 , Figure 4 As shown, it includes: Furnace body 1, on which multiple sealing plates 4 are detachably installed; The top cover 2 is located above the furnace body 1, and multiple electric arc rods 3 for generating high-temperature melting rock wool raw materials are slidably installed on the top cover 2. The dust collection mechanism comprises multiple sets arranged in a ring around the circumference of the furnace body 1 and the top cover 2. The dust collection mechanism includes two dust collection components arranged opposite each other on the furnace body 1 and the top cover 2, and a drive component arranged on the furnace body 1 to drive the dust collection components. Each dust collection component includes an air intake component arranged on the top cover 2 to guide exhaust gas into the furnace body 1. Multiple driven rods 5 are rotatably arranged on the furnace body 1. A first bevel gear 14 is fixedly arranged on each of the driven rods 5. Two rotating frames 6 are detachably arranged on each of the driven rods 5, distributed axially opposite to each other. A connecting pipe 7, a filter box 8, and a fan 11 are connected in series and connected to the furnace body 1 at one end. Multiple dust-collecting nets 10 for filtering impurities in the exhaust gas are fixedly arranged inside the filter box 8. An arc-shaped net for capturing impurities in the exhaust gas is fixedly arranged on the rotating frame 6.

[0022] The specific implementation method is as follows: multiple sealing plates 4 are detachably installed in the preset installation position of the furnace body 1 by bolts to ensure that the main structure of the furnace body 1 is closed; the top cover 2 is hoisted to the top of the furnace body 1, so that the top cover 2 and the top of the furnace body 1 are reserved for installation; the connection status of multiple sets of dust collection mechanisms arranged in a ring around the circumference of the furnace body 1 is checked to ensure that the two ends of the connecting pipe 7 are sealed to the air outlet of the furnace body 1 and the air inlet of the filter box 8 respectively, and the air outlet of the filter box 8 is sealed to the air inlet of the fan 11.

[0023] Open the top cover 2 and pour the pretreated rock wool raw material into the furnace body 1 through the top opening of the furnace body 1; close the top cover 2 and start the sliding drive mechanism on the top cover 2 to drive multiple electric arc rods 3 to move downward along the sliding track of the top cover 2 until the discharge end of the electric arc rod 3 extends into the preset heating position above the raw material in the furnace body 1, while the bottom end of the top cover 2 is sealed to the top end of the furnace body 1.

[0024] The electric arc rod 3 is activated to generate a high-temperature electric arc, which heats and melts the rock wool raw material inside the furnace body 1. Simultaneously, the drive components of the blower 11 and the dust collection mechanism are activated. The blower 11 generates negative pressure, causing the dust-laden exhaust gas inside the furnace to flow sequentially towards the air inlet component, the internal channel of the furnace body 1, and the connecting pipe 7. The drive component drives the driven rod 5 to rotate, and the driven rod 5 drives the rotating frames 6 at both ends to rotate synchronously. The arc-shaped mesh on the rotating frame 6 captures large impurities in the exhaust gas during the rotation process.

[0025] The exhaust gas, pretreated by the arc-shaped mesh, enters the filter box 8 through the connecting pipe 7. The exhaust gas passes through multiple dust-collecting nets 10 inside the filter box 8, where fine dust is intercepted. The purified exhaust gas enters the fan 11 and is discharged to the subsequent treatment system through the fan 11. During operation, the temperature and exhaust gas flow rate inside the furnace body 1 are monitored to ensure that the gap between the rotating frame 6 and the furnace body 1 is not blocked by impurities, thus ensuring stable heat dissipation.

[0026] Example 2: This embodiment further defines the structure of the air intake assembly based on the above embodiments, such as... Figure 3 As shown, the air intake assembly includes a limiting plate 18 fixedly mounted on the top cover 2, two clamping frames 20 rotatably mounted on the top cover 2, and an air intake pipe 19 clamped and fixed between the two clamping frames 20 and abutting against the limiting plate 18. Each of the two clamping frames 20 has threaded through holes for fixing the air intake pipe 19 with fasteners. The limiting plate 18 is fixed to a preset position on the top cover 2 and, by abutting against the outer wall of the air intake pipe 19, restricts the radial displacement of the air intake pipe 19, ensuring that the air intake port of the air intake pipe 19 is always aligned with the waste gas generation area inside the furnace body 1, preventing the air intake path from deviating. The two clamping frames 20 are rotatably mounted on the top cover 2, and through their threaded through holes and fasteners, they can clamp and fix the air intake pipe 19 from both sides, preventing vibration or displacement of the air intake pipe 19 due to waste gas flow and ensuring air intake stability.

[0027] The specific implementation process is as follows: First, complete the installation of the air intake assembly: fix the limiting plate 18 to the side of the air intake channel of the top cover 2 by welding or bolting; rotate the two clamping brackets 20 on the top cover 2 through the rotating shaft, so that the two clamping brackets 20 are symmetrically distributed on both sides of the air intake channel, and the axis of the threaded through hole of the clamping brackets 20 is collinear.

[0028] Pass the air outlet end of the air inlet pipe 19 through the air inlet channel of the top cover 2, so that the outer wall of the air inlet pipe 19 is in close contact with the contact surface of the limiting plate 18; rotate the two clamping brackets 20 so that the inner side wall of the clamping brackets 20 is in contact with the outer peripheral surface of the air inlet pipe 19, at which point the threaded through holes of the two clamping brackets 20 are aligned; pass the bolt through the threaded through holes of the two clamping brackets 20 and tighten the nut to achieve a firm fixation of the air inlet pipe 19.

[0029] During operation, the air inlet duct 19 is kept stable by the limiting plate 18 and the clamping frame 20, ensuring that the exhaust gas enters the furnace body 1 in a directional manner. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again.

[0030] Example 3: This embodiment, based on the above embodiments, further defines the structure and positional relationship of the air inlet pipe 19, such as... Figure 3 As shown, the air inlet pipe 19 is a right-angle pipe. One end of the right-angle pipe is adapted to connect with the top cover 2, and the other end guides the external exhaust gas into the furnace body 1 in a directional manner. The top cover 2 of the rock wool melting device and the furnace body 1 are mostly arranged vertically. The air inlet pipe 19 is set as a right-angle pipe. One end can be connected to the external exhaust gas guide pipe in the horizontal direction, and the other end can pass through the top cover 2 and extend into the furnace body 1 in the vertical direction. There is no need to set up additional bend joints, which reduces the resistance to exhaust gas flow. At the same time, the right-angle structure can ensure that after the exhaust gas enters from the horizontal direction, it flows vertically and directionally into the furnace body 1, avoiding the formation of eddies in the airflow at the corner of the pipe, which would cause impurities to be deposited.

[0031] The specific implementation process is as follows: select a right-angle air inlet pipe 19 that matches the size of the air inlet channel of the top cover 2; pass the vertical end of the right-angle air inlet pipe 19 through the air inlet channel of the top cover 2, so that the bottom end of the vertical end is aligned with the inside of the furnace body 1 and the horizontal end of the air inlet is facing the external exhaust gas guide pipe; according to the steps of embodiment 2, limit the displacement of the air inlet pipe 19 by the limiting plate 18 and clamp it by the clamping frame 20.

[0032] The external exhaust gas guide pipe is sealed to the horizontal end of the right-angle air inlet pipe 19 through a flange or hose to ensure that external auxiliary air such as cooling air can be directionally introduced into the furnace body 1 through the right-angle air inlet pipe 19.

[0033] The right-angle air inlet duct 19 enables directional flow of exhaust gas, allowing it to enter horizontally and exit vertically, thus reducing airflow resistance and impurity deposition. The other parts of this embodiment are the same as those in the above embodiments and will not be repeated here.

[0034] Example 4: This embodiment further defines the structure of the driving component based on the above embodiments, such as... Figure 4As shown, the drive assembly includes a maintenance plate 13 detachably mounted on the furnace body 1 for inspecting internal components, a motor 17 fixedly mounted on the furnace body 1 for providing driving force, a drive rod 15 fixedly connected at one end to the output end of the motor 17, and a second bevel gear 16 fixedly mounted at the end of the drive rod 15 away from the motor 17. The first bevel gear 14 and the second bevel gear 16 mesh to transmit the driving force of the motor 17 to the driven rod 5. The output end of the motor 17 is fixedly connected to the drive rod 15. After the motor 17 starts, it drives the drive rod 15 to rotate. The second bevel gear 16 on the drive rod 15 meshes with the first bevel gear 14 on the driven rod 5, converting the rotational power of the motor 17 into the rotational power of the driven rod 5, thereby realizing the synchronous drive of multiple sets of driven rods 5.

[0035] The inspection plate 13 is detachably mounted on the outside of the drive component mounting cavity of the furnace body 1. After removing the inspection plate 13, the motor 17, drive rod 15, first bevel gear 14, second bevel gear 16 and other components can be directly accessed without disassembling the main body of the furnace body 1, thus reducing the difficulty of maintenance.

[0036] The specific implementation process is as follows: the motor 17 is fixed to the motor mounting base of the furnace body 1 with bolts; one end of the drive rod 15 is fixedly connected to the output end of the motor 17 through a coupling, and the other end is rotatably mounted on the bearing seat of the furnace body 1 through a bearing; a second bevel gear 16 is fixedly mounted on the end of the drive rod 15 away from the motor 17; multiple driven rods 5 are rotatably mounted in the driven rod mounting holes of the furnace body 1 through bearings, so that the first bevel gear 14 on each driven rod 5 meshes precisely with the second bevel gear 16; finally, the inspection plate 13 is bolted to the outside of the drive assembly mounting cavity of the furnace body 1 to complete the sealing of the drive assembly.

[0037] When the motor 17 is started, the motor 17 drives the drive rod 15 to rotate. The drive rod 15 drives the multiple driven rods 5 to rotate synchronously through the meshing of the second bevel gear 16 and the first bevel gear 14, thereby driving the rotating frame 6 on the driven rod 5 to rotate.

[0038] If maintenance of the drive components is required, the equipment can be stopped first, the fixing bolts of the inspection plate 13 can be removed, and the inspection plate 13 can be removed to directly inspect or replace the motor 17, drive rod 15, first bevel gear 14, and second bevel gear 16. After the inspection is completed, the inspection plate 13 can be reinstalled. The other parts of this embodiment are the same as those in the above embodiments and will not be described again.

[0039] Example 5: This embodiment, based on the above embodiment, further adds a heat insulation board 9, such as... Figure 2As shown, a heat insulation plate 9 is fixedly installed on the end face of the dust collection net 10 near the operator's replacement side to prevent burns when the operator replaces the dust collection net 10. The heat insulation plate 9 is made of high-temperature resistant heat insulation material with low thermal conductivity, which can effectively block the heat generated by the dust collection net 10 in contact with high-temperature exhaust gas from being transferred to the operator's side, thus avoiding burns caused by direct contact with high-temperature components when the operator replaces the dust collection net 10.

[0040] The specific implementation process is as follows: after completing the installation of the filter box 8 and the dust collection net 10, the heat insulation plate 9 is fixed to the end face of the dust collection net 10 near the inspection door of the filter box 8 with high temperature resistant bolts. This is the contact end face when the operator replaces the dust collection net 10, ensuring that the heat insulation plate 9 and the dust collection net 10 are tightly fitted without any obvious gaps.

[0041] If the dust collection screen 10 needs to be replaced due to blockage by impurities after the equipment has been running for a period of time, first stop the fan 11 and open the inspection door of the filter box 8. The operator directly contacts the heat insulation plate 9 on the dust collection screen 10, holds the heat insulation plate 9, and removes the dust collection screen 10 from the slot in the filter box 8. Replace it with a new dust collection screen 10, which is pre-installed with the heat insulation plate 9. Then insert the new dust collection screen 10 into the slot in the filter box 8, close the inspection door, and restart the fan 11. The heat insulation plate 9 blocks heat transfer throughout the entire replacement process, ensuring operational safety. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0042] Example 6: This embodiment further defines the structure of the arc rod 3 based on the above embodiments, such as... Figure 3 As shown, the arc rod 3 includes an arc rod body 31 for generating high temperature and an inclined ring 32 fixedly sleeved on the outer circumference of the arc rod body 31. The top end of the inclined ring 32 abuts against the bottom end of the top cover 2, and the inclined surface of the inclined ring 32 faces the inside of the furnace body 1, which is used to guide the rock wool material remaining when the arc rod 3 resets to slide into the furnace body 1. The inclined surface of the inclined ring 32 faces the inside of the furnace body 1. When the arc rod 3 resets, that is, moves upward, the rock wool material adhering to its surface slides along the inclined surface of the inclined ring 32 under the action of gravity, and finally slides into the furnace body 1, avoiding the accumulation of material on the surface of the arc rod 3.

[0043] The specific implementation process is as follows: select an arc rod 3 with an inclined ring 32; fix the inclined ring 32 on the outer circumference of the main body 31 of the arc rod by welding or interference fit, ensuring that the inclined surface of the inclined ring 32 faces the inside of the furnace body 1; install the arc rod 3 on the top cover 2 through a sliding mechanism, so that the top end of the inclined ring 32 and the bottom end of the top cover 2 leave a small gap.

[0044] When the rock wool raw material has melted and subsequent processes are required, the sliding drive mechanism is activated to drive the arc rod 3 to reset upwards along the top cover 2. During the reset process, residual raw material adhering to the surface of the main body 31 of the arc rod slides downwards along the inclined surface of the inclined ring 32 under the action of gravity, and finally falls into the furnace body 1. When the arc rod 3 resets to the top position, the top of the inclined ring 32 abuts against the bottom of the top cover 2, ensuring that no raw material remains on the surface of the inclined ring 32. The inclined ring 32 can repeatedly clean residual raw material when the arc rod 3 resets, avoiding the accumulation of raw material that affects heating efficiency. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0045] Example 7: This embodiment, based on the above embodiment, further adds a sealing gasket. An annular sealing gasket is provided on the edge of the sealing plate 4 facing the interior of the furnace body 1. The sealing gasket is tightly fitted to both the sealing plate 4 and the inner wall of the furnace body 1. The annular sealing gasket is made of an elastic, high-temperature resistant material and has a certain amount of compression. When the sealing plate 4 is installed on the furnace body 1, the sealing gasket is compressed between the sealing plate 4 and the inner wall of the furnace body 1, filling the tiny gaps between them, preventing high-temperature exhaust gas from leaking through the gaps, and simultaneously preventing heat loss from the furnace through the gaps.

[0046] The specific implementation process is as follows: First, a sealing groove is opened on the edge of the sealing plate 4 facing the inside of the furnace body 1, and the annular sealing gasket is embedded in the sealing groove; ensure that the size of the sealing gasket and the sealing groove are compatible, without misalignment or wrinkles. The sealing plate 4 with the pre-installed sealing gasket is then installed on the preset installation position of the furnace body 1 using bolts. When the bolts are tightened, the sealing plate 4 is pressed towards the furnace body 1, the sealing gasket is compressed, and it tightly fits the sealing groove of the sealing plate 4 against the inner wall of the furnace body 1, thus filling the gap. After the installation of the sealing plate 4 is completed, a pressure test or airtightness test can be performed to confirm that no exhaust gas leaks from the connection between the sealing plate 4 and the furnace body 1; the sealing gasket continues to perform its sealing function, reducing exhaust gas leakage and heat loss. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0047] Example 8: This embodiment, based on the above embodiment, further defines the connection method of the arc rod 3. A fastening bolt and a positioning pin are provided at the detachable connection between the rotating frame 6 and the driven rod 5. The driven rod 5 has a positioning hole adapted to the positioning pin. The fastening bolt passes sequentially through the mounting lug of the rotating frame 6 and the threaded hole of the driven rod 5. The positioning pin is inserted into the positioning hole to restrict the circumferential rotation of the rotating frame 6 relative to the driven rod 5. The positioning pin is inserted into the positioning hole of the driven rod 5 and the corresponding hole of the rotating frame 6. Through the clearance fit between the pin and the hole, the circumferential rotation of the rotating frame 6 relative to the driven rod 5 is restricted, ensuring that the rotating frame 6 and the driven rod 5 rotate synchronously, avoiding a decrease in the impurity collection effect of the arc-shaped mesh due to asynchronous rotation. The fastening bolt passes sequentially through the mounting lug of the rotating frame 6 and the threaded hole of the driven rod 5. Through the axial preload generated by the threaded connection, the rotating frame 6 is firmly fixed to the driven rod 5, preventing the rotating frame 6 from displacing axially along the driven rod 5.

[0048] The specific implementation process is as follows: First, align the mounting ears of the rotating frame 6 with the preset mounting position of the driven rod 5, so that the positioning holes on the rotating frame 6 are aligned with the positioning holes on the driven rod 5; insert the positioning pin into the aligned positioning hole to achieve circumferential positioning of the rotating frame 6; then pass the fastening bolts through the mounting ears of the rotating frame 6 and the threaded holes of the driven rod 5 in sequence, and tighten the bolts to complete the axial fixation of the rotating frame 6; two rotating frames 6 are symmetrically installed on each driven rod 5 to ensure that the two are distributed relative to each other along the axial direction of the driven rod 5.

[0049] When the arc-shaped mesh on the rotating frame 6 needs cleaning / replacement due to blockage or damage caused by impurities, first stop the operation of the drive assembly; unscrew the fastening bolts and pull out the positioning pins to remove the rotating frame 6 from the driven rod 5; after cleaning or replacing the arc-shaped mesh, reinstall the rotating frame 6 according to the above steps, ensuring that the positioning pins are aligned with the positioning holes and the bolts are tightened. The rotating frame 6 rotates synchronously with the driven rod 5 through the positioning pins and fastening bolts, ensuring the impurity collection effect. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0050] It is understood that the working principle and process of the melting device structure for producing rock wool according to one embodiment of the present invention, such as the filter box 8 and the air inlet pipe 19, are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A melting device for producing rock wool, characterized in that include: The furnace body (1) is detachably equipped with multiple sealing plates (4). The top cover (2) is located above the furnace body (1), and multiple electric arc rods (3) for generating high-temperature melting rock wool raw materials are slidably installed on the top cover (2). The dust collection mechanism is arranged in a ring around the circumference of the furnace body (1) on the furnace body (1) and the top cover (2); the dust collection mechanism includes two dust collection components arranged opposite to each other on the furnace body (1) and the top cover (2), and a drive component arranged on the furnace body (1) for driving the dust collection components to operate; the dust collection component includes an air inlet component arranged on the top cover (2) for guiding exhaust gas into the furnace body (1), and multiple driven rods (5) are rotatably arranged on the furnace body (1), and multiple driven rods (5) are arranged on the multiple driven rods (5) 5) Each of the first bevel gears (14) is fixedly installed. Two rotating frames (6) are detachably installed on multiple driven rods (5) and are distributed opposite each other along the axial direction of the driven rods (5). One end of the frame is connected to the furnace body (1) and is connected in series with the connecting pipe (7), the filter box (8) and the fan (11). Multiple dust collection nets (10) for filtering waste gas impurities are fixedly installed inside the filter box (8). An arc-shaped net for capturing impurities in the waste gas is fixedly installed on the rotating frame (6).

2. A melting device for producing rock wool according to claim 1, characterized in that The air intake assembly includes a limiting plate (18) fixedly mounted on the top cover (2), two clamping frames (20) rotatably mounted on the top cover (2), and an air intake pipe (19) clamped and fixed between the two clamping frames (20) and abutting against the limiting plate (18); each of the two clamping frames (20) is provided with a threaded through hole for fixing the air intake pipe (19) by fasteners.

3. A melting device for the production of rock wool according to claim 2, characterized in that The air inlet pipe (19) is a right-angle pipe. One end of the right-angle pipe is adapted to the top cover (2), and the other end guides the external exhaust gas into the furnace body (1).

4. A melting device for the production of rock wool according to any one of claims 1 to 3, characterized in that The drive assembly includes a maintenance plate (13) detachably mounted on the furnace body (1) for inspecting the internal components of the drive assembly, a motor (17) fixedly mounted on the furnace body (1) for providing driving force, a drive rod (15) fixedly connected at one end to the output end of the motor (17), and a second bevel gear (16) fixedly mounted on the end of the drive rod (15) away from the motor (17); the first bevel gear (14) and the second bevel gear (16) mesh to transmit the driving force of the motor (17) to the driven rod (5).

5. A melting device for the production of rock wool according to any one of claims 1 to 3, characterized in that The dust collection net (10) is fixedly provided with a heat insulation plate (9) on the end face near the operator's replacement side to prevent the operator from being burned when replacing the dust collection net (10).

6. A melting device for producing rock wool according to any one of claims 1 to 3, characterized in that, The electric arc rod (3) includes an electric arc rod body (31) for generating high temperature, and an inclined ring (32) fixedly sleeved on the outer circumference of the electric arc rod body (31); the top end of the inclined ring (32) abuts against the bottom end of the top cover (2), and the inclined surface of the inclined ring (32) faces the inside of the furnace body (1) to guide the residual rock wool raw material when the electric arc rod (3) is reset to slide into the furnace body (1).

7. A melting device for the production of rock wool according to any one of claims 1 to 3, characterized in that The sealing plate (4) has an annular sealing gasket on one side edge facing the inside of the furnace body (1), and the sealing gasket is tightly fitted to the inner wall of the sealing plate (4) and the furnace body (1).

8. A melting device for producing rock wool according to any one of claims 1 to 3, characterized in that The detachable connection between the rotating frame (6) and the driven rod (5) is provided with fastening bolts and positioning pins. The driven rod (5) has a positioning hole that matches the positioning pin. The fastening bolt passes through the mounting lug of the rotating frame (6) and the threaded hole of the driven rod (5) in sequence. The positioning pin is inserted into the positioning hole to restrict the circumferential rotation of the rotating frame (6) relative to the driven rod (5).

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