Non-stop scraping device for furnace scale of glass bead expansion furnace

Abstract

The invention relates to a non-stop scraping device for furnace scale of a vitrified micro bubble expansion furnace, which comprises at least two vitrified micro bubble expansion furnaces working synchronously, a scraping mechanism comprises a rack, and a crawling assembly and a scraping assembly are arranged on the rack; the crawling assembly comprises a roller set, the roller set comprises at least three rollers evenly distributed in the circumferential direction of the rack at intervals, each roller is provided with a driving motor, the roller set and the rack are movably assembled through a parallel four-bar mechanism, and a crawling driving mechanism is connected between the roller set and the rack. The scraping assembly comprises a rotating frame, a circumferential driving mechanism is connected between the rotating frame and the rack, and three layers of cleaning structures are sequentially arranged on the rotating frame in the axial direction; each layer of cleaning structure comprises an ejector rod, a beating vibration head, a rotary scraper and a brush are fixed to the outer end of the ejector rod of each layer, and a pushing mechanism which is in push-pull fit with the ejector rod of the same layer so as to eject the ejector rod out to be attached to the inner wall of the vitrified microbead expansion furnace is arranged in the rotating frame. The problems that traditional manual descaling is low in efficiency and large in potential safety hazard are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of slag removal technology for vitrified microsphere expansion furnaces, and in particular to a non-stop scraping device for removing scale from vitrified microsphere expansion furnaces. Background Technology

[0002] The working principle of a vitrified microsphere expansion furnace is as follows: vitrified microsphere ore is fed into a preheating furnace for preheating, and then conveyed to the expansion furnace, where the temperature is generally controlled between 900-1200℃. The vitrified microsphere ore heats up rapidly as it passes through the expansion furnace, expanding at high temperatures to form a porous structure. The expanded microspheres are then rapidly cooled through a fast-cooling feeding pipe to fix their structure. During the expansion of the vitrified microsphere ore in the expansion furnace, some powdery particles or impurities adhere to the inner wall of the furnace, forming scale. This scale must be scraped off promptly, otherwise it will affect the expansion effect of other materials. Currently, expansion furnaces lack a dedicated scale removal structure, requiring manual cleaning, which often results in incomplete scale removal and severely impacts expansion efficiency. Furthermore, when a large amount of scale forms on the furnace wall, the entire expansion furnace, along with the upstream and downstream feeding systems and the preheating furnace, must be shut down for cooling before maintenance personnel can perform descaling work. This process is time-consuming and labor-intensive, significantly impacting production efficiency and increasing operating costs. Summary of the Invention

[0003] The purpose of this invention is to provide a non-stop scale removal device for vitrified microsphere expansion furnaces, so as to solve the problems of time-consuming and labor-intensive manual scale removal in existing vitrified microsphere expansion furnaces, which affects production efficiency and increases maintenance costs.

[0004] To solve the above problems, the vitrified microsphere expansion furnace scale removal device involved in this invention adopts the following technical solution: The non-stop scale removal device for vitrified microsphere expansion furnace includes at least two vitrified microsphere expansion furnaces operating synchronously, and also includes a scraping mechanism movably arranged on the ground or in the air. The scraping mechanism is driven to selectively move to a position aligned with the axial direction of each vitrified microsphere expansion furnace. The scraping mechanism includes a frame, on which crawling components and scraping components are arranged along the axial direction. The crawling assembly includes a roller assembly movably mounted on the outer peripheral surface of the frame. The roller assembly includes at least three rollers evenly spaced around the frame in a circumferential direction. Each roller is equipped with a drive motor. The roller assembly is movably mounted to the frame via a parallel four-bar linkage. A crawling drive mechanism that drives the roller assembly to open or retract radially is connected between the roller assembly and the frame. The scraping assembly includes a rotating frame rotatably mounted on one end of the frame. A circumferential drive mechanism is connected between the rotating frame and the frame. The rotating frame has three cleaning structures arranged sequentially along the axial direction: a scale hammering structure, a scale rotary scraping structure, and a scale sweeping structure. Each cleaning structure includes a top rod mounted on the rotating frame along the radial guide. The outer end of each top rod is fixed with a hammering vibrating head, a rotary scraper, and a brush. The rotating frame is equipped with a pushing mechanism that cooperates with the top rod of the same layer to push the top rod out and fit against the inner wall of the vitrified microsphere expansion furnace.

[0005] Furthermore, each layer of the cleaning structure has at least three push rods, evenly spaced around the circumference of the rotating cage. The push rods in the same layer are staggered in the vertical direction. The pushing mechanism includes a rotating rod coaxially mounted in the rotating frame. One end of the rotating rod is equipped with a pushing drive motor. Three cam groups are provided on the rotating rod at the positions corresponding to the push rods of each layer. The cam group includes multiple cams stacked vertically. The outer contour of each cam abuts against the push rods in the cleaning structure of the same layer. When the cam group rotates, each push rod in the same layer is pushed outward synchronously. A return spring is also installed between each push rod and the rotating frame.

[0006] Furthermore, the rotating frame includes a cage-like frame body, which is a frame structure with a hexagonal cross-section. Each layer of the cleaning structure has three top rods, which are evenly distributed around the center of each side line of the cage-like frame body. The top rods in the cleaning structures of adjacent layers are staggered along the circumference of the rotating frame.

[0007] Furthermore, the scale-beating structure includes a vibrating motor fixedly mounted on the outer end of the corresponding top rod, and a beating vibrating head connected to the output end of the vibrating motor; the scale-scraping structure includes a rotary motor fixedly mounted on the outer end of the corresponding top rod, and a rotary scraper rotatably mounted on the output end of the rotary motor.

[0008] Furthermore, the diameters of the outer contours of the hammering range of the scale hammering structure, the outer contours of the scraping range of the scale rotary scraping structure, and the outer contours of the cleaning range of the scale cleaning structure increase sequentially.

[0009] Furthermore, the circumferential drive mechanism includes a large gear ring sleeved on the end of the rotating frame, a drive motor eccentrically arranged on the frame, and a small gear ring meshing with the large gear ring at the output end of the drive motor.

[0010] Furthermore, a support plate assembly is movably mounted on the outer circumferential surface of the frame. The support plate assembly includes at least three support plates evenly distributed around the frame in a circumferential direction. Each support plate and each roller are sequentially staggered around the frame in a circumferential direction. The support plates are movably mounted to the frame through a parallel four-bar linkage mechanism. A support drive mechanism is also connected between the support plates and the frame.

[0011] Furthermore, both the supporting drive mechanism and the crawling drive mechanism include a hydraulic cylinder and a drive rod connected to the output end of the hydraulic cylinder. The drive rod is guided to move along the axial direction of the frame. A transmission rod is hinged to the tail end of the drive rod. The transmission rod is hinged to each roller and support plate so that when the drive rod moves in the guided direction, it drives the transmission rod to swing, thereby pushing the roller and support plate to move and retract respectively.

[0012] Furthermore, the outer end face of the support plate is provided with anti-slip protrusions.

[0013] Furthermore, the frame has a mounting plate on the side facing away from the rotating frame, and the mounting plate has a mounting part for detachable assembly with an electric hoist or lifting platform.

[0014] The beneficial effects of the present invention are as follows: Compared with the prior art, the non-stop scaling scraping device for vitrified microsphere expansion furnace involved in the present invention, by setting a scraping mechanism that can be moved to different axial positions of vitrified microsphere expansion furnaces, combined with a rotating frame structure with layered cleaning function, can perform multi-stage treatment of hammering, rotating scraping and sweeping on one of the vitrified microsphere expansion furnaces without stopping the machine, effectively solving the problems of low efficiency and high safety hazards of traditional manual scaling, and has the advantages of improving cleaning effect and ensuring operational safety.

[0015] Furthermore, the use of radial adjustment of the roller assembly and the telescopic adjustment structure in conjunction with the scraping component can effectively remove scale residue by adjusting the diameter of the valve cover and the synergistic effect of the three-layer cleaning structure. This is a significant improvement over manual cleaning and also avoids the risks of manual operation in high-temperature environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below: Figure 1 This is a schematic diagram of a specific embodiment of the vitrified microsphere expansion furnace scale removal device of the present invention; Figure 2 for Figure 1 A schematic diagram of the scraping mechanism; Figure 3 for Figure 2 A schematic diagram of the structure of the crawling component; Figure 4 for Figure 3 A half-section view; Figure 5 for Figure 2 A schematic diagram of the structure of the scraping component; Figure 6 for Figure 5 A schematic diagram of the drive section; Figure 7 for Figure 5The front view; Figure 8 for Figure 7 Sectional view along the FF direction; Figure 9 for Figure 7 Central GG-direction sectional view; Figure 10 for Figure 7 Sectional view in the middle II direction.

[0017] Explanation of reference numerals in the attached figures: 1- Vitrified microsphere expansion furnace; 2-Frame; 21-Receiving slot; 22-Mounting plate; 3-Crawling assembly; 31-Roller assembly; 311-Wheel frame; 312-Double wheels; 32-Support plate assembly; 321-Support plate; 322-Protrusion; 33-Hydraulic cylinder; 34-Drive rod; 35-Transmission rod; 36-Parallel four-bar linkage; 4-Scraping assembly; 41-Rotating frame; 42-Scale hammering structure; 421-Vibration motor; 422-Hammering vibrating head; 43-Scale rotary scraping structure; 431-Rotating motor; 432-Rotating scraper; 44-Scale cleaning structure; 441-Brush; 45-Circumferential drive mechanism; 451-Large gear ring; 452-Small gear ring; 453-Drive motor; 46-Pushing mechanism; 461-Pushing drive motor; 462-Rotating rod; 463-Cam assembly; 464-Push rod; 465-Return spring; 5-Electric hoist. Detailed Implementation

[0018] To make the technical objectives, technical solutions, and beneficial effects of the present invention clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Specific embodiments of the non-stop scaling removal device for vitrified microsphere expansion furnace involved in this invention are as follows: Figures 1 to 10 As shown, this scraping device is suitable for intermittent or staggered operation of two or more vitrified microsphere expansion furnaces 1 running simultaneously. During the synchronous expansion operation of two vitrified microsphere expansion furnaces 1, material is supplied through one preheating furnace. When it is necessary to clean the scale, one vitrified microsphere expansion furnace 1 is paused while the other continues to operate, and the process is repeated sequentially; or a standby vitrified microsphere expansion furnace 1 can be used. This avoids the situation where a long-term shutdown would cause the entire production line to stop.

[0020] The scraping device includes a scraping mechanism movably arranged on or in the air and capable of moving on or in the air. This mechanism is driven to selectively move to a position aligned with the axial direction of each vitrified microsphere expansion furnace 1. It includes a frame 2, with a crawling assembly 3 and a scraping assembly 4 arranged along its axial direction. The crawling assembly 3 includes a roller assembly 31 movably mounted on the outer circumferential surface of the frame 2. The roller assembly 31 includes at least three rollers evenly spaced circumferentially around the frame 2. Each roller is equipped with a drive motor 453. The roller assembly 31 is movably mounted to the frame 2 via a parallel four-bar linkage 36. A crawling drive mechanism that drives the roller assembly 31 to open or retract radially is connected between the roller assembly 31 and the frame 2. The roller assembly 31 and the parallel four-bar linkage 36 achieve radial adjustment. The scraping assembly 4 includes a rotating frame 41 rotatably mounted on one end of the frame 2. A circumferential drive mechanism 45 is connected between the rotating frame 41 and the frame 2. The rotating frame 41 is provided with three cleaning structures along the axial direction: a scale hammering structure 42, a scale rotary scraping structure 43, and a scale sweeping structure 44. Each cleaning structure includes a top rod 464 mounted on the rotating frame 41 along the radial direction. The outer ends of the top rod 464 of each layer are respectively fixed with a hammering vibrating head 422, a rotary scraper 432, and a brush 441. The rotating frame 41 is provided with a pushing mechanism 46 that cooperates with the top rod 464 of the same layer to push the top rod 464 out and fit against the inner wall of the vitrified microsphere expansion furnace 1.

[0021] In this embodiment, the roller assembly 31 is a moving unit consisting of three circumferentially distributed rollers. Specifically, it can be implemented using a servo motor to drive the steel rollers. It is connected to the frame 2 via a parallel four-bar linkage 36, allowing the roller assembly 31 to extend and retract synchronously in the radial direction. This design enables the device to adapt to the inner walls of the vitrified microsphere expansion furnace 1 with different diameters. Specifically, the rollers include a wheel frame 311 and double wheels 312 arranged on both sides of the wheel frame 311. The wheel frame 311 has a plate-like structure, extending in a direction parallel to the axial direction of the frame 2. It is movably assembled with the frame 2 via the parallel four-bar linkage 36. During the operation of the parallel four-bar linkage 36, the wheel frame 311 moves radially relative to the frame 2, thereby ensuring smooth contact between the double wheels 312 and the inner wall of the vitrified microsphere expansion furnace 1, avoiding situations where contact is not possible or unstable. The rotating frame 41 is a rotating component that supports the cleaning structure. Specifically, it can be a hexagonal cage frame, achieving circumferential rotation through the meshing of a large gear ring 451 and a small gear. This structure provides a stable support platform for the multi-layer cleaning assembly. The push mechanism 46 refers to the actuator that drives the cleaning assembly to move radially. Specifically, it can adopt a structure of cam assembly 463 and return spring 465. When the rotating rod 462 drives the cam to rotate, the push rod 464 is pushed outward by the cam profile, so that the cleaning tool is in close contact with the furnace wall. This mechanism ensures effective contact pressure for the cleaning action.

[0022] In actual operation, after the scraping mechanism moves to the axial position of the target vitrified microsphere expansion furnace 1, the entire scraping mechanism is moved into the vitrified microsphere expansion furnace 1 by external drive. Then, the roller assembly 31 of the crawling component 3 extends radially to abut against the furnace wall. The drive motor 453 drives the roller assembly 31 to crawl axially along the furnace wall. At the same time, the rotating frame 41 rotates under the action of the circumferential drive mechanism 45, driving the three-layer cleaning mechanism to work circumferentially along the inner wall of the vitrified microsphere expansion furnace 1. The pushing mechanism 46 drives the cleaning structure of each layer to extend out of the rotating frame 41 and abut against the inner wall of the vitrified microsphere expansion furnace 1. During this process, the hammering vibrating head 422 is driven by the vibration motor 421 to impact the surface of the scale at high frequency. The rotary scraper 432 rotates to cut the middle and bottom layers to loosen the scale. The brush 441 sweeps away residual debris. The cleaning machines of each layer work by staggered arrangement to achieve coverage without dead angles. The parallel four-bar linkage 36 maintains a constant contact force between the roller assembly 31 and the furnace wall to avoid slippage.

[0023] In one preferred embodiment, there are at least three push rods 464 in each layer of the cleaning structure, which are evenly distributed around the circumference of the rotating cage. The push rods 464 in the same layer are staggered in the vertical direction. The pushing mechanism 46 includes a rotating rod 462 coaxially rotatably mounted in the rotating frame 41. One end of the rotating rod 462 is equipped with a pushing drive motor 461. The rotating rod 462 is provided with three layers of cam groups 463 at the positions corresponding to the push rods 464 in each layer. The cam group 463 includes multiple cams stacked vertically. The outer contour of each cam abuts against the push rods 464 in the same layer of the cleaning structure. When the cam group 463 rotates, each push rod 464 in the same layer is pushed outward synchronously by the push. A return spring 465 is also installed between each push rod 464 and the rotating frame 41.

[0024] The push rods 464 are staggered vertically, and multiple push rods 464 within the same layer are staggered vertically. Specifically, a stepped distribution can be used, for example, adjacent push rods 464 differ in axial height by a certain distance. This design avoids repeated cleaning at the same axial position, increases the coverage area, and also maintains the force balance of the rotating frame 41 during the cleaning process. The cam group 463 includes multiple cams stacked vertically, with each layer corresponding to a set of cams stacked axially. Split cam plates can be used to be fixedly connected to the rotating rod 462 via keyways. The radius lines of the maximum radii of different cam plates are evenly distributed around the circumference of the rotating rod 462. This ensures that when each push rod 464 cooperates with the cams, it achieves synchronous expansion and contraction with the same displacement due to the synchronous rotation of each cam. In addition, the return spring 465 is mounted between the push rod 464 and the rotating frame 41. One end of the spring is fixed to the inner wall of the rotating frame 41, and the other end is connected to the tail of the push rod 464. Specifically, a compression spring or torsion spring structure can be adopted. When the cam disengages and applies a pushing force to the push rod 464, the return spring 465 provides a reverse force to make the push rod 464 automatically retract, ensuring the dynamic fit between the cleaning structure and the furnace wall.

[0025] When the push drive motor 461 drives the rotating rod 462 to rotate, the three-layer cam group 463 rotates synchronously with the rotating rod 462. The cams stacked in each layer of cam group 463 contact the push rod 464 of the same layer in sequence, and push the push rod 464 outward through the undulation of the outer contour of the cam. Since the push rods 464 of the same layer are staggered, their extension and retraction movements form a continuous coverage in the axial direction, avoiding blind spots in cleaning. After reaching the cleaning depth, the rotating rod 462 maintains a relative position, so that the cam and the push rod 464 remain in contact. After that, each layer of cleaning structure works independently, and the corresponding layer of scale is crushed, scraped and cleaned.

[0026] Compared to traditional manual cleaning, which requires stopping the machine and entering the furnace to clean point by point, resulting in low efficiency and safety hazards, the method uses a cam group 463 to drive multiple push rods 464 to extend and retract synchronously. Combined with staggered arrangement, it can achieve full circumferential and multi-level cleaning of the furnace wall inside the furnace, and can avoid the problem of reduced production efficiency caused by overall machine shutdown.

[0027] In a preferred embodiment, the rotating frame 41 includes a cage-like frame structure with a hexagonal cross-section. Each layer of the cleaning structure has three top rods 464, evenly distributed circumferentially at the center of each side of the cage-like frame. The top rods 464 in adjacent layers are staggered circumferentially along the rotating frame 41. The cage-like frame is a three-dimensional frame structure composed of multiple longitudinal members and transverse connectors. Specifically, it can be implemented using a welded or bolted hexagonal cross-section metal frame, which provides stable support and a foundation for the top rods 464. The center of each side is the midpoint of the hexagonal frame, which can be achieved by setting mounting seats or guide grooves at the midpoints of the frame sides. This arrangement makes the distribution of the top rods 464 more uniform, which is beneficial for expanding the cleaning coverage area. The top rods 464 of the two adjacent layers form a phase difference in the circumferential direction of the rotating frame 41. This can be achieved by adjusting the installation angle of the top rods 464 or by the interlayer offset design. This design can avoid interference when the upper and lower cleaning structures move, and at the same time enhance the continuous cleaning effect on the furnace wall.

[0028] Specifically, the cage-like frame adopts a hexagonal cross-section frame structure, with three top rods 464 installed at the center of each side of the hexagon, forming evenly distributed cleaning points. The top rods 464 of adjacent layers are staggered at a certain angle in the circumferential direction; for example, the upper top rod 464 is located at the center of the first side of the hexagon, while the lower top rod 464 is located at the center of the adjacent side, thus forming a staggered layout. When the rotating frame 41 drives the cleaning structure to rotate, the hammering, scraping, and sweeping actions of each layer of top rods 464 alternate at different positions on the furnace wall, avoiding repeated cleaning or omissions in the same area. The symmetry and rigid support characteristics of the hexagonal frame effectively resist the vibrations and loads generated during the cleaning process, ensuring the stability of the top rod 464's movement trajectory. The combination of the hexagonal frame and the circumferentially staggered top rods 464 enhances structural strength and, through the staggered design, creates a complementary cleaning range in both the axial and circumferential directions, significantly improving the comprehensiveness of scale removal.

[0029] In a preferred embodiment, the scale hammering structure 42 includes a vibration motor 421 fixedly mounted on the outer end of the corresponding top rod 464, and a hammering vibration head 422 connected to the output end of the vibration motor 421; the scale scraping structure 43 includes a rotary motor 431 fixedly mounted on the outer end of the corresponding top rod 464, and a rotary scraper 432 rotatably mounted on the output end of the rotary motor 431. Specifically, in the scale hammering structure 42, the vibration motor 421 is fixed to the outer end of the top rod 464. When the top rod 464 is driven by the pushing mechanism 46 to move outward to adhere to the inner wall of the vitrified microsphere expansion furnace 1, the vibration motor 421 drives the hammering vibration head 422 to generate high-frequency vibration, causing the hard scale adhering to the furnace wall to break and fall off due to vibration. In the scale scraping structure 43, the rotary motor 431 is fixed to the outer end of the push rod 464, and the rotary scraper 432 is mounted on the output shaft of the rotary motor 431 via bearings. When the push rod 464 is pushed out, the rotary motor 431 drives the rotary scraper 432 to rotate around its own axis, performing rotary cutting on the scale residue remaining on the furnace wall to further remove stubborn clumps. This solution, through a combination of vibration and rotation, can treat scale in layers according to different physical states. For example, vibration can preferentially peel off brittle scale, while the rotating blade can cut into the tough residual layer. This achieves graded removal of scale on the inner wall of the vitrified microsphere expansion furnace 1. The synergistic effect of vibration and rotation eliminates the need for manual intervention in the cleaning process, avoiding production capacity loss due to downtime, and solving the problem that a single cleaning method cannot adapt to the diverse forms of scale.

[0030] In a preferred embodiment, the diameters of the outer contours of the hammering range of the scale hammering structure 42, the scraping range of the scale rotary scraping structure 43, and the cleaning range of the scale cleaning structure 44 increase sequentially. The outer contour of the hammering range is the boundary of the working area formed by the contact between the vibrating head of the scale hammering structure 42 and the inner wall of the vitrified microsphere expansion furnace 1 during operation. This can be achieved by adjusting the radial extension length or installation angle of the vibrating head at the outer end of the top rod 464, ensuring that the hammering range covers the shallow scale near the furnace wall. The outer contour of the scraping range is the boundary of the working area formed by the rotary scraper 432 during rotational cutting. This can be achieved by adjusting the extension length of the rotary scraper 432 relative to the outer end of the top rod 464, ensuring that the scraping range covers the middle layer of scale. The outer contour of the cleaning range is the boundary of the working area formed by the rotating brush 441 during cleaning. This can be achieved by adjusting the radial expansion amplitude or elastic deformation of the brush 441, ensuring that the cleaning range covers the outermost loose scale.

[0031] During the cleaning process, the crawling mechanism moves intermittently along the axial direction. The scale-beating structure 42 uses a vibrating head to perform high-frequency impact crushing on the shallow scale on the furnace wall. Subsequently, the rotary scraper 432 rotates and cuts off the middle layer of scale. Finally, the brush 441 cleans up any remaining loose scale. Because the outer diameter of the three-layer cleaning structure increases progressively, the working areas of the vibrating head, rotary scraper 432, and brush 441 form a stepped coverage, avoiding interference between different cleaning structures during operation and ensuring that the scale is peeled off layer by layer from the inside out, reducing residue. For example, the vibrating head has the smallest diameter, prioritizing the treatment of hard scale adhering to the furnace wall; the rotary scraper 432 has a slightly larger diameter, allowing it to cut into the thicker middle layer of scale; and the brush 441 has the largest diameter, covering the outermost loose debris and sweeping it to the center of the furnace cavity. This three-layer cleaning structure with increasing diameter forms a stepped cleaning path, ensuring that scale at different depths is peeled off layer by layer while avoiding interference between tools, significantly improving cleaning efficiency. It effectively reduces the adhesion of scale to the furnace wall, ensures the uniformity of the subsequent material expansion process, and reduces the need for repeated maintenance due to incomplete cleaning.

[0032] In a preferred embodiment, to drive the rotating frame 41, the circumferential drive mechanism 45 includes a large gear ring 451 fitted onto the end of the rotating frame 41, and a drive motor 453 eccentrically arranged on the frame 2. The output end of the drive motor 453 is connected to a small gear ring 452 that meshes with the large gear ring 451. The circumferential drive mechanism 45 drives the small gear ring 452 to rotate via the drive motor 453. After the small gear ring 452 meshes with the large gear ring 451, it drives the rotating frame 41 to rotate around its own axis. Due to the eccentric arrangement of the drive motor 453, the internal space of the frame 2 is optimized, avoiding conflict between the motor and the rotating frame 41's movement trajectory. When the rotating frame 41 rotates, the cleaning structure on it rotates synchronously with the rotating frame 41, realizing the cleaning of scale in different areas of the inner wall of the vitrified microsphere expansion furnace 1. By eccentrically arranging the drive motor 453, not only is the spatial layout optimized, but the meshing transmission between the large gear ring 451 and the small gear ring 452 also improves the rotational smoothness of the rotating frame 41 and reduces the risk of wear on the transmission components. A reliable drive for the rotating frame 41 is achieved without increasing the volume of the frame 2, ensuring that the cleaning structure remains stable during rotation, thereby improving the efficiency of scraping off dirt and reducing the frequency of equipment maintenance.

[0033] In a preferred embodiment, in order to achieve the stability of the crawling component 3 during the support process, a support plate group 32 is also movably assembled on the outer peripheral surface of the frame 2. The support plate group 32 includes at least three support plates 321 that are evenly distributed around the frame 2 in the circumferential direction. Each support plate 321 and each roller are sequentially staggered around the frame 2 in the circumferential direction. The support plates 321 and the frame 2 are movably assembled through a parallel four-bar linkage 36. A support drive mechanism is also connected between the support plates 321 and the frame 2.

[0034] The support plate assembly 32 is a structure composed of multiple support components distributed circumferentially along the frame 2. It can be made of sheet metal or composite materials and provides radial support when the frame 2 moves into the vitrified microsphere expansion furnace 1, enhancing the contact stability between the frame 2 and the furnace wall. The parallel four-bar linkage 36 is a planar hinge mechanism composed of four links, specifically using rigidly hinged rods. It allows the support plate 321 to translate radially under the action of the drive mechanism, preventing deflection or jamming. The support drive mechanism is a power device used to control the radial movement of the support plate 321. It can be implemented using a hydraulic cylinder 33, a pneumatic cylinder, or an electric push rod. It drives the linkage mechanism through linear motion, causing the support plate 321 to open or retract synchronously. The support plate assembly 32 is arranged on the outer circumferential surface of the frame 2, alternating with the rollers circumferentially.

[0035] When the frame 2 needs to enter the vitrified microsphere expansion furnace 1, the support drive mechanism is activated, pushing the support plate 321 radially outward through the parallel four-bar linkage 36, so that its end contacts the furnace wall. At this time, the support plate 321 and the rollers together form multi-point support, keeping the frame 2 in a stable posture inside the furnace and preventing the frame 2 from shifting due to vibration or off-center loading caused by the scraping operation. After the scraping operation is completed, the support drive mechanism reverses its action, causing the support plate 321 to retract, facilitating the removal of the frame 2 from the furnace. By adding the support plate assembly 32, the number of support points of the frame 2 inside the furnace is increased, and the staggered distribution of the support plate 321 and the rollers forms a complementary support structure, significantly improving the stability of the frame 2 under complex working conditions. It can effectively prevent the frame 2 from shifting due to vibration or force changes during the scraping operation, ensuring the fit between the scraping component 4 and the furnace wall, thereby improving the efficiency of scale removal and reducing the risk of repeated operations or equipment damage caused by the instability of the frame 2.

[0036] In a preferred embodiment, the supporting drive mechanism and the crawling drive mechanism have essentially the same structure, both including a hydraulic cylinder 33 and a drive rod 34 connected to the output end of the hydraulic cylinder 33. The drive rod 34 is guided to move axially along the frame 2. A transmission rod 35 is hinged to the tail end of the drive rod 34. The transmission rod 35 is hinged to each roller and support plate 321 so that when the drive rod 34 moves axially, it drives the transmission rod 35 to swing, thereby pushing the rollers and support plates 321 to move and retract respectively. Specifically, the frame 2 is a columnar structure with a hexagonal cross-section. Each side of the frame 2 has an axially extending receiving groove 21. Two intermediate rods of a parallel four-bar linkage 36 are hinged to the outer edges of both ends of the receiving groove 21. The frame 2 itself constitutes the base rod, and the support plate 321 or wheel frame 311 constitutes the output rod. Correspondingly, the drive rod 34 extends through one end of the frame 2 and the groove wall of the receiving groove 21, and one end of the transmission rod 35 is hinged to the end of the drive rod 34 in the receiving groove 21.

[0037] When the hydraulic cylinder 33 is activated, its output end pushes the drive rod 34 to move axially along the frame 2. The tail end of the drive rod 34 drives the transmission rod 35 to swing through the hinge point, and the swing of the transmission rod 35 further pushes the roller to translate radially through the hinge point. During this process, the roller and the support plate 321 maintain the stability of the translation trajectory through the parallel four-bar linkage 36, thereby realizing the retraction and extension. For example, when the drive rod 34 moves towards the front end of the frame 2, the transmission rod 35 swings inward, causing the support plate 321 to retract, and the roller and the support plate 321 to extend outward; when the drive rod 34 moves towards the rear end of the frame 2, the transmission rod 35 swings outward, pushing the roller and the support plate 321 to open.

[0038] In actual operation, the hydraulic cylinder 33 corresponding to the roller assembly 31 is always under pressure, pressing the roller against the inner wall of the vitrified microsphere expansion furnace 1. During the crawling process, the hydraulic cylinder 33 corresponding to the support plate assembly 32 retracts to avoid contact with the inner wall of the vitrified microsphere expansion furnace 1. After reaching the next cleaning position, the support plate 321 opens and presses against the inner wall of the vitrified microsphere expansion furnace 1, thereby increasing the contact area between the vitrified microsphere expansion furnace 1 and the crawling assembly 3, and preventing the mechanism from disengaging due to vibration and other factors during the cleaning process.

[0039] Meanwhile, anti-slip protrusions 322 are provided on the outer end face of the support plate 321. When the support drive mechanism pushes the support plate 321 to expand radially, the outer end face of the support plate 321 with anti-slip protrusions 322 contacts the inner wall of the vitrified microsphere expansion furnace 1. The anti-slip protrusions 322 are embedded in the micro-recesses on the furnace wall surface, forming a multi-point interlocking state, effectively overcoming the tangential force generated when the frame 2 moves axially. For example, when the frame 2 performs scraping operations in the furnace, the edges of the diamond-shaped grid pattern form multi-directional resistance with the furnace wall, preventing the support plate 321 from slipping during vibration or movement.

[0040] In a preferred embodiment, to ensure the applicability of the scraping mechanism, a mounting plate 22 is provided on the side of the frame 2 facing away from the rotating frame 41. The mounting plate 22 has a mounting portion for detachable assembly and disassembly with the electric hoist 5 or the lifting platform. The mounting plate 22 is a plate-like structure fixed to the side of the frame 2 facing away from the rotating frame 41, specifically by welding or bolting, providing a connection interface with external hoisting equipment. The mounting portion refers to the connection structure provided on the mounting plate 22, specifically implemented in the form of threaded holes, slots, or hooks, for quick connection or separation with the hook of the electric hoist 5 or the fixed end of the lifting platform.

[0041] In the hoisting scraping method of this embodiment, the mounting plate 22 is located at the end of the frame 2 away from the rotating frame 41, and its surface can be provided with multiple threaded holes or slots as mounting parts. When it is necessary to move the scraping mechanism to different working positions of the vitrified microsphere expansion furnace 1, the hook of the electric hoist 5 can be connected to the mounting plate 22 through the mounting part, thereby lifting the entire scraping mechanism and moving it to the axial position of the target vitrified microsphere expansion furnace 1. After the movement is completed, the mounting part can be quickly separated from the electric hoist 5 or the lifting platform, so that the scraping mechanism enters the working state.

[0042] During bottom cleaning, the rotating frame 41 is at the top and the mounting plate 22 is at the bottom. The mounting plate 22 is placed on the fixed end of the lifting platform, which pushes the scraping mechanism upwards into the vitrified microsphere expansion furnace 1. After the crawling component 3 contacts the inner wall of the vitrified microsphere expansion furnace 1, the lifting platform moves downwards. Through the cooperation of the mounting plate 22 with the electric hoist 5 or the lifting platform, the scraping mechanism can be flexibly transferred between different vitrified microsphere expansion furnaces 1 without relying on fixed tracks or requiring machine shutdown for disassembly, significantly improving equipment deployment efficiency.

[0043] Finally, it should be noted that the above embodiments are only for illustration and not for limiting the technical solutions of the present invention. Any equivalent substitutions, modifications or partial substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A non-stop scale removal device for vitrified microsphere expansion furnace, characterized in that, It includes at least two vitrified microsphere expansion furnaces operating simultaneously, and also includes a scraping mechanism that is movably arranged on the ground or in the air. The scraping mechanism is driven to selectively move to a position aligned with the axial direction of each vitrified microsphere expansion furnace. The scraping mechanism includes a frame on which crawling components and scraping components are arranged along the axial direction. The crawling assembly includes a roller assembly movably mounted on the outer peripheral surface of the frame. The roller assembly includes at least three rollers evenly spaced around the frame in a circumferential direction. Each roller is equipped with a drive motor. The roller assembly is movably mounted to the frame via a parallel four-bar linkage. A crawling drive mechanism that drives the roller assembly to open or retract radially is connected between the roller assembly and the frame. The scraping assembly includes a rotating frame rotatably mounted on one end of the frame. A circumferential drive mechanism is connected between the rotating frame and the frame. The rotating frame has three cleaning structures arranged sequentially along the axial direction: a scale hammering structure, a scale rotary scraping structure, and a scale sweeping structure. Each cleaning structure includes a top rod mounted on the rotating frame along the radial guide. The outer end of each top rod is fixed with a hammering vibrating head, a rotary scraper, and a brush. The rotating frame is equipped with a pushing mechanism that cooperates with the top rod of the same layer to push the top rod out and fit against the inner wall of the vitrified microsphere expansion furnace.

2. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 1, characterized in that, Each cleaning structure has at least three push rods, evenly spaced around the circumference of the rotating cage. The push rods in the same layer are staggered in the vertical direction. The pushing mechanism includes a rotating rod coaxially mounted in the rotating frame. One end of the rotating rod is equipped with a pushing drive motor. Three cam groups are provided on the rotating rod at the positions corresponding to the push rods of each layer. The cam group includes multiple cams stacked vertically. The outer contour of each cam abuts and cooperates with the push rods in the cleaning structure of the same layer. When the cam group rotates, each push rod in the same layer is pushed outward synchronously. A return spring is also installed between each push rod and the rotating frame.

3. The non-stop scale removal device for vitrified microsphere expansion furnace according to claim 2, characterized in that, The rotating frame includes a cage-like frame, which is a frame structure with a hexagonal cross-section. Each layer of the cleaning structure has three top rods, which are evenly distributed around the center of each side line of the cage-like frame. The top rods in the cleaning structures of adjacent layers are staggered along the circumference of the rotating frame.

4. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 3, characterized in that, The scale-beating structure includes a vibrating motor fixedly mounted on the outer end of the corresponding top rod, and a beating vibrating head connected to the output end of the vibrating motor; the scale-scraping structure includes a rotary motor fixedly mounted on the outer end of the corresponding top rod, and a rotary scraper rotatably mounted on the output end of the rotary motor.

5. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 1, characterized in that, The diameters of the outer contours of the hammering range of the scale hammering structure, the outer contours of the scraping range of the scale rotary scraping structure, and the outer contours of the cleaning range of the scale cleaning structure increase sequentially.

6. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 1, characterized in that, The circumferential drive mechanism includes a large gear ring sleeved on the end of the rotating frame, a drive motor eccentrically arranged on the frame, and a small gear ring meshing with the large gear ring at the output end of the drive motor.

7. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 1, characterized in that, The outer circumferential surface of the frame is also movably fitted with a support plate assembly, which includes at least three support plates evenly distributed around the frame in the circumferential direction. Each support plate and each roller are sequentially staggered around the frame in the circumferential direction. The support plates are movably assembled with the frame through a parallel four-bar linkage mechanism. A support drive mechanism is also connected between the support plates and the frame.

8. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 7, characterized in that, Both the supporting drive mechanism and the crawling drive mechanism include a hydraulic cylinder and a drive rod connected to the output end of the hydraulic cylinder. The drive rod is guided to move along the axial direction of the frame. A transmission rod is hinged to the tail end of the drive rod. The transmission rod is hinged to each roller and support plate so that when the drive rod moves, it drives the transmission rod to swing, thereby pushing the roller and support plate to move and retract respectively.

9. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 7, characterized in that, The outer end face of the support plate is provided with anti-slip protrusions.

10. The non-stop scaling removal device for vitrified microsphere expansion furnace according to claim 1, characterized in that, The frame has a mounting plate on the side facing away from the rotating frame, and the mounting plate has a mounting part for detachable assembly and disassembly with an electric hoist or lifting platform.

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