Cleaning, screening, and filling device for sealing sand for high-temperature annealing annular furnace

Abstract

A cleaning, screening, and filling device for sealing sand for a high-temperature annealing annular furnace, comprising: a rotary folding mechanical arm (1), adapted to rotate to implement switching among the positions of a plurality of bogie masonries of an annular furnace; a sand suctioning system (2), used for negative-pressure suctioning of sealing sand at the position of a bogie masonry of the annular furnace; an automatic screening system (3), communicated with the sand suctioning system (2) and used for automatically screening the sealing sand from the sand suctioning system (2); a sand filling system (4), used for filling each bogie masonry with the sealing sand, wherein the outlet of the automatic screening system (3) can be communicated with a feeding funnel (413); and a remote controller.

Description

Cleaning, screening and filling device for sealing sand of high temperature annealing ring furnace

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202311028013.5 filed on August 15, 2023, and cites the contents disclosed in the above patent application as part of this application. Technical Field

[0003] The present disclosure relates to the technical field of annular furnace sand body processing, and in particular to a cleaning, screening and filling device for high-temperature annealing annular furnace sealing sand. Background Art

[0004] When heating steel coils in a ring furnace for high-temperature annealing of oriented silicon steel, an inner cover must be added to the outside of the steel coils (used to protect the steel coils in the ring furnace for silicon steel annealing, working in an ultra-high temperature medium environment), and the inner cover and the heating furnace trolley masonry (used to place heated steel coils, with circular grooves around them for placing sealing quartz sand. An inner cover is placed in each circular groove, corresponding to a steel coil work station) must be sealed with sealing sand (used to seal the gap between the inner cover and the trolley masonry, using materials that meet the working temperature, chemical composition and sealing requirements). Each time a steel coil is produced in the ring furnace, the original sealing sand must be cleaned to remove the sintered surface and fallen iron oxide powder, and then filled with new sealing sand or screened and reused sealing sand to maintain the sealing effect between the inner cover and the trolley masonry for the next steel coil heating cycle.

[0005] Currently, the cleaning, screening and filling of sealing sand are mainly done by manual labor, which is inconvenient and inefficient, and the ambient temperature is high, posing a hidden danger to the occupational health and safety of operators.

[0006] The existing technology includes a sand suction system and a screening system. Sand is sucked in by a hard sand suction gun, and the sealing sand flows in the following order: hard sand suction gun → suction pipe → storage tank → vibrating screen → feed cylinder → backfill hopper. A cyclone dust collector and a bag dust collector are installed in sequence between the storage tank and the suction fan. The two dust collectors purify the air drawn into the suction fan, protecting the suction fan and ensuring the normal operation of the equipment. At the same time, the two dust collectors also remove as much sealing sand as possible. This technical solution only introduces the system process and the functions of each component, without providing a specific spatial layout and equipment. This technology has the following disadvantages:

[0007] 1. There is no sealing sand filling system, so automatic filling of sealing sand cannot be achieved and manual filling is still required.

[0008] 2. The sand suction pipe needs to be pulled manually, which is inconvenient for operators to operate.

[0009] 3. The backfill bucket needs to be transported away regularly and does not have the conditions for continuous operation.

[0010] 4. It is impossible to remove the iron oxide powder in the sealing sand.

[0011] 5. It is impossible to form a closed working cycle of sand suction, screening and filling, and the labor intensity is relatively high.

[0012] Therefore, the inventors, relying on their many years of experience and practice in related industries, have proposed a device for cleaning, screening and filling sealing sand of a high-temperature annealing annular furnace to overcome the defects of the prior art.

[0013] Summary of the Invention

[0014] The purpose of the present invention is to provide a cleaning, screening and filling device for sealing sand of a high-temperature annealing ring furnace, so as to solve the problems of sealing sand cleaning, automatic screening of sealing sand, removal of iron oxide powder contained in sealing sand, automatic filling of sealing sand and online reuse of sealing sand in the prior art. The present invention adopts a combination of a rotating folding mechanical arm, a sand suction, screening and filling mechanism to realize the automatic positioning, sand suction, screening and sand filling functions on different trolley masonry, realize the online closed working circulation utilization of sealing sand, and at the same time have the function of replenishing new sealing sand; reduce the consumption of sealing sand, reduce the number of operators and reduce the labor intensity of operators, and at the same time ensure the occupational health and safety of operators.

[0015] The purpose of the present disclosure is achieved by providing a cleaning, screening and filling device for high-temperature annealing annular furnace sealing sand, comprising:

[0016] Rotating and folding mechanical arm for rotating and switching to multiple trolley masonry positions of the ring furnace;

[0017] A sand suction system, used for negative pressure absorption of sealing sand at the trolley masonry of the annular furnace, is installed on the rotating folding mechanical arm and can rotate with it;

[0018] an automatic screening system, connected to the sand suction system, comprising a vibrating screen and a magnetic iron remover, for automatically screening the sealing sand from the sand suction system; the automatic screening system is mounted on the rotating folding mechanical arm and can rotate therewith;

[0019] A sand filling system is used to fill the masonry of each trolley with sealing sand, and is installed on the rotating folding mechanical arm and can rotate with it; a feeding funnel is provided on the sand filling system, and the outlet of the automatic screening system can be connected to the feeding funnel;

[0020] A remote controller is connected to the rotating and folding mechanical arm, the sand suction system, the automatic screening system and the sand filling system through electrical signals.

[0021] In a preferred embodiment of the present disclosure, the rotating folding mechanical arm includes a fixed column, a cantilevered rotating arm hinged on the column and capable of horizontally rotating around the column, the other end of the cantilevered rotating arm away from the column is hinged to a folding arm capable of horizontally rotating relative to the cantilevered rotating arm, and the folding arm is located above the cantilevered rotating arm; the folding arm has a rotating arm at one end away from the column that can horizontally rotate relative to the folding arm, and the rotating arm is located below the folding arm.

[0022] In a preferred embodiment of the present disclosure, the sand suction system includes a sand suction nozzle, a sand suction hose, a cyclone dust collector, a negative pressure bag type gas-solid separator and an air compressor connected in sequence, the sand suction nozzle and the sand suction hose constitute the sand suction part, the cyclone dust collector and the negative pressure bag type gas-solid separator constitute the deposition part, the inlet of the sand suction hose is connected to the sand suction nozzle through an end sand suction pipe, the sand suction hose is mounted on the folding arm and the cantilevered rotating arm, the end sand suction pipe is mounted on the rotating arm, and the sand suction nozzle can be switched to each trolley masonry position as the rotating arm, the folding arm and the cantilevered rotating arm move; the operation of the air compressor generates negative pressure in the sand suction system, and the sand suction nozzle absorbs the sealing sand at the trolley masonry under the action of the negative pressure, the cyclone dust collector performs a primary deposition on the sealing sand passing through the sand suction nozzle and the sand suction hose, and the negative pressure bag type gas-solid separator performs a secondary deposition on the sealing sand passing through the cyclone dust collector.

[0023] In a preferred embodiment of the present disclosure, the automatic screening system includes the vibrating screen, which is connected to the outlet of the cyclone dust collector. A sand outlet is provided at the bottom end of the vibrating screen, and the sand outlet is connected to the sand storage chamber through the magnetic iron remover. The outlet of the sand storage chamber is connected to the sand filling system.

[0024] In a preferred embodiment of the present disclosure, the feeding part of the sand filling system includes a bucket elevator connected to the automatic screening system, the feeding part includes a screw conveyor group, the outlet of the bucket elevator is connected to the screw conveyor group, the screw conveyor group can rotate with the folding arm and the cantilevered rotating arm, the screw conveyor group is used to convey the sealing sand from the bucket elevator; the outlet of the screw conveyor group is connected to the terminal sand filling pipe, the terminal sand filling pipe is connected to the rotating arm, and the terminal sand filling pipe is used to fill the trolley masonry with sealing sand.

[0025] In a preferred embodiment of the present disclosure, the top of the column is hinged to the cantilevered rotating arm through a bearing; an anti-overturning structure is also hinged on the column, and the end of the anti-overturning structure away from the column is fixedly connected to the cantilevered rotating arm.

[0026] In a preferred embodiment of the present disclosure, a first gear motor and a driving wheel are provided on the anti-overturning structure, and a circular track is provided on the column. The first gear motor drives the driving wheel to rotate along the circular track through a first gear shaft to drive the anti-overturning structure and the cantilevered rotating arm to rotate horizontally around the column.

[0027] In a preferred embodiment of the present disclosure, at least two protection wheels are arranged on the anti-overturning structure at intervals around the circular track.

[0028] In a preferred embodiment of the present disclosure, the cantilevered rotating arm and the folding arm are hinged by a first slewing bearing, external meshing teeth are provided on the outer wall of the first slewing bearing, a second gear motor is provided on the folding arm, a second gear shaft is provided on the second gear motor, external meshing teeth are provided on the outer wall of the second gear shaft, and the second gear motor drives the first slewing bearing to rotate through the second gear shaft to drive the folding arm to rotate horizontally.

[0029] In a preferred embodiment of the present disclosure, the folding arm and the rotating arm are hinged via a second slewing bearing.

[0030] In a preferred embodiment of the present disclosure, the bottom end of the cyclone dust collector is connected to a feeding valve, and the feeding valve is connected to the automatic screening system.

[0031] In a preferred embodiment of the present disclosure, the bottom end of the negative pressure bag type gas-solid separator is connected to a discharge valve.

[0032] In a preferred embodiment of the present disclosure, the sand suction nozzle is a double-barrel straight suction nozzle.

[0033] In a preferred embodiment of the present disclosure, the vibrating screen is connected to a vibration motor, and multiple layers of screens are provided inside the vibrating screen. The vibration motor drives the vibrating screen to vibrate and screen the sealing sand from the cyclone dust collector.

[0034] In a preferred embodiment of the present disclosure, the magnetic iron remover is a pull-out type quick cleaning structure, including a pull-out box, in which a magnetic block is detachably arranged.

[0035] In a preferred embodiment of the present disclosure, a feeder is provided at the outlet of the sand storage chamber, the feeder is connected to an inclined first material barrel, and the outlet of the first material barrel is connected to the sand filling system.

[0036] In a preferred embodiment of the present disclosure, the screw conveyor group includes a first screw conveyor and a second screw conveyor, the first screw conveyor is connected to the cantilevered rotating arm, and the second screw conveyor is connected to the folding arm; the outlet of the bucket elevator is connected to the inclined second material barrel, and the outlet of the second material barrel is connected to the feed port of the first screw conveyor, and the outlet center of the second material barrel and the feed port center of the first screw conveyor both coincide with the rotation center of the cantilevered rotating arm relative to the column; the discharge port of the first screw conveyor is connected to the feed port of the second screw conveyor, and the discharge port center of the first screw conveyor and the feed port center of the second screw conveyor both coincide with the rotation center between the cantilevered rotating arm and the folding arm; the discharge port of the second screw conveyor is connected to the end sand filling pipe through a material receiving funnel, and the discharge port center of the second screw conveyor and the center of the material receiving funnel both coincide with the rotation center between the rotating arm and the folding arm.

[0037] In a preferred embodiment of the present disclosure, a first mounting bracket is provided on the cantilevered rotating arm, and the first screw conveyor is installed on the first mounting bracket; a second mounting bracket is provided on the folding arm, and the second screw conveyor is installed on the second mounting bracket.

[0038] In a preferred embodiment of the present disclosure, the bucket elevator includes a shell, an upper roller and a lower roller are arranged in the shell, a lifting belt is sleeved on the upper roller and the lower roller, a plurality of lifting hoppers are arranged on the lifting belt, the upper roller is connected to a bucket elevator driving device, and the bucket elevator driving device drives the lifting belt to move up and down by driving the upper roller; a feeding funnel is arranged on the outside of the shell, and the feeding funnel is used to fill each of the lifting hoppers; the outlet of the sand storage chamber is connected to the feeding funnel through a first material barrel.

[0039] In a preferred embodiment of the present disclosure, a feeding platform is provided on the outer wall of the shell, and a blade is also provided on the feeding platform.

[0040] As described above, the cleaning, screening and filling device for high-temperature annealing annular furnace sealing sand disclosed in the present invention has the following beneficial effects:

[0041] The cleaning, screening and filling device for sealing sand in a high-temperature annealing annular furnace disclosed herein realizes a closed working cycle of online cleaning, screening and filling of sealing sand through the configuration and integration of sand suction, screening and filling systems and a reasonable plane layout based on the physical properties and logistics direction of the sealing sand, thereby reducing the consumption of sealing sand, the number of operators and the labor intensity of the operators, and at the same time ensuring the occupational health and safety of the operators.

[0042] The present invention adopts a combination of a rotating folding mechanical arm, a sand suction, screening and filling mechanism to realize the automatic positioning, sand suction, screening and sand filling functions on different trolley masonry, realizes the online closed working circulation utilization of sealing sand, and has the function of replenishing new sealing sand; under a relatively high ambient temperature, one operator can complete the cleaning, screening and filling work of the sealing sand, and the operation time can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The following figures are intended only to illustrate and explain the present disclosure and are not intended to limit the scope of the present disclosure.

[0044] FIG1 is a front view of a device for cleaning, screening and filling sealing sand of a high-temperature annealing annular furnace according to the present invention.

[0045] FIG2 is a top view of the apparatus for cleaning, screening and filling sealing sand of a high-temperature annealing annular furnace disclosed herein.

[0046] FIG3 is a side view of the apparatus for cleaning, screening, and filling sealing sand for a high-temperature annealing annular furnace according to the present disclosure.

[0047] FIG4 is a schematic diagram of the connection between the anti-overturning structure and the column of the present disclosure.

[0048] FIG5 is a schematic diagram of a sand suction nozzle according to the present invention.

[0049] Figure: 1. Rotating and folding robotic arm; 11. Column; 12. Cantilevered rotating arm; 13. Folding arm; 14. Rotating arm; 15. Steel structure base; 16. Anti-overturning structure; 17. First gear motor; 18. First gear shaft; 19. Drive wheel; 110. Guard wheel; 111. Circular track; 112. First slewing bearing; 113. Second gear motor; 114. Second gear shaft; 115. Second slewing bearing; 2. Sand suction system; 21. Sand suction nozzle; 22. Sand suction hose; 23. Cyclone dust collector; 24. Negative pressure bag type gas-solid separator; 25. Air compressor; 26. Feed valve; 27. Discharge valve; 28. End sand suction pipe; 3. Automatic screening system; 31. Vibrating screen; 32. Vibrating motor; 33. Magnetic iron remover; 34. Sand storage chamber; 35. Feeder; 36. First material barrel; 4. Sand filling system; 41. Bucket elevator; 42. Second material barrel; 43. First screw conveyor; 44. Second screw conveyor; 45. End sand filling pipe; 46. First mounting bracket; 47. Third gear motor; 48. Second mounting bracket; 49. Fourth gear motor; 410. Material receiving hopper; 411. Feeding platform; 412. Blade; 413. Feeding hopper; 414. Shell; 415. Lifting belt; 416. Lifting hopper; 417. Upper roller; 418. Lower roller; 419. Bucket elevator drive device; 5. Working platform. DETAILED DESCRIPTION

[0050] In order to have a clearer understanding of the technical features, purposes and effects of the present disclosure, specific embodiments of the present disclosure are now described with reference to the accompanying drawings.

[0051] The specific embodiments of the present disclosure described herein are intended only to explain the present disclosure and are not to be construed as limiting the present disclosure in any way. Under the guidance of the present disclosure, a skilled person can conceive of any possible variations based on the present disclosure, all of which should be considered to fall within the scope of the present disclosure. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element at the same time. The terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to mechanical or electrical connections, or to internal communication between two elements, and can be directly connected or indirectly connected through an intermediate medium. A person of ordinary skill in the art can understand the specific meanings of the above terms based on the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] As shown in Figures 1 to 5, the present disclosure provides a cleaning, screening and filling device for high-temperature annealing annular furnace sealing sand, comprising:

[0054] The rotating and folding mechanical arm 1 is used to rotate and switch to multiple trolley masonry positions of the annular furnace; the rotating and folding mechanical arm 1 is used to install and fix the pipes and equipment of the sand suction and sand filling system. The rotating and folding mechanical arm 1 can realize the sand suction and sand filling functions of different trolley masonry positions. At the same time, when not working, it can be stopped in an idle position that does not hinder the normal operation of the annular furnace trolley;

[0055] The sand suction system 2 is used to absorb the sealing sand at the masonry of the trolley of the annular furnace under negative pressure. It includes a sand suction unit and a deposition unit. The sand suction unit is installed on the rotating folding mechanical arm 1 and can rotate with it; the deposition unit is used to deposit the sealing sand transported by the sand suction unit at least once. The sand suction system 2 realizes mechanical cleaning of the sealing sand.

[0056] The automatic screening system 3 is connected to the sand suction system 2 and includes a vibrating screen 31 and a magnetic iron remover 33. It is used to automatically screen the sealing sand from the sand suction system 2. The sealing sand is 100% screened by the vibrating screen 31. The qualified sealing sand flows downward to the sand filling system 4 for recycling. The magnetic iron remover 33 removes iron oxide powder contained in the sealing sand.

[0057] The sand filling system 4 is used to fill the masonry of each trolley with sealing sand. It includes a feeding unit and a conveying unit. The conveying unit is mounted on the rotating and folding mechanical arm 1 and can rotate with it. The feeding unit includes a feeding funnel 413. The outlet of the automatic screening system 3 can be connected to the feeding funnel 413 of the sand filling system 4. The feeding funnel 413 also serves as the inlet for newly added sealing sand, realizing the online circulation transfer of sealing sand. Newly added sealing sand or sealing sand from the automatic screening system 3 enters the conveying unit mounted on the rotating and folding mechanical arm 1 through the feeding unit, realizing the sealing sand filling function.

[0058] The entire integrated system can greatly reduce the consumption of sealing sand and improve the utilization efficiency of sealing sand through online closed circulation.

[0059] The remote controller is connected to the rotating folding mechanical arm 1, the sand suction system 2, the automatic screening system 3 and the sand filling system 4 through electrical signals. The remote controller is a handheld remote controller that is convenient for operators to operate and control the equipment.

[0060] When applied to annular furnaces, the disclosed technical solution solves the problem of high operating temperature environments and limited working space, where the hot inner cover around the periphery is prone to burns, and the hot refractory material at the bottom can easily damage labor protection equipment. It also solves the problem of the sealing sand at the corresponding material level requiring surface cleaning and then filling after each steel coil is hoisted out of the furnace, which requires a large number of operators and is labor-intensive. The disclosed technical solution can significantly reduce the number of operators, reduce their labor intensity, improve operational efficiency, and save time.

[0061] The present invention integrates a sand suction, screening and filling system to solve the problems of sealing sand cleaning, automatic screening of sealing sand, removal of iron oxide powder contained in sealing sand, automatic filling of sealing sand, and online reuse of sealing sand. The present invention realizes automatic positioning of the sand suction and filling system at different workstations by rotating and folding a mechanical arm. The sand suction and sand filling functions can be realized by operating a remote control, which can reduce the number of operators in the existing technical solutions, the high labor intensity, and protect the occupational health and safety of the operators.

[0062] The cleaning, screening and filling device for sealing sand of a high-temperature annealing annular furnace disclosed herein realizes a closed working cycle of online cleaning, screening and filling of sealing sand through the configuration and integration of sand suction, screening and filling systems and reasonable plane layout based on the physical properties and logistics direction of the sealing sand, thereby reducing the consumption of sealing sand, the number of operators and the labor intensity of operators, and at the same time ensuring the occupational health and safety of operators.

[0063] The present invention adopts a combination of a rotating folding mechanical arm, a sand suction, screening and filling mechanism to realize the automatic positioning, sand suction, screening and sand filling functions on different trolley masonry, realizes the online closed working circulation utilization of sealing sand, and has the function of replenishing new sealing sand; under a relatively high ambient temperature, one operator can complete the cleaning, screening and filling work of the sealing sand, and the operation time can be guaranteed.

[0064] Furthermore, as shown in Figures 1 and 2, the cleaning, screening and filling device for the sealing sand of the high-temperature annealing annular furnace disclosed in the present invention also includes a working platform 5. The working platform 5 mainly refers to a supporting platform integrating the sealing sand suction system 2 (except for some sand suction hoses) and the automatic screening system 3, which is convenient for installation, inspection, maintenance and operation; the working platform 5 is a steel structure welded part, composed of a frame, a ladder, a platform, etc., and is fixed on the foundation.

[0065] The specific structure of the rotating folding robot arm 1 is as follows:

[0066] As shown in Figures 1 and 2, the rotating folding mechanical arm 1 includes a fixed column 11, which is fixed to a steel structure base 15 or a foundation; a cantilevered rotating arm 12 is hinged on the column 11 and can rotate horizontally around the column, and the other end of the cantilevered rotating arm 12 away from the column 11 is hinged to a folding arm 13 that can rotate horizontally relative to the cantilevered rotating arm 12, and the folding arm 13 is located above the cantilevered rotating arm 12; an end of the folding arm 13 away from the column 11 is a rotating arm 14 that can rotate horizontally relative to the folding arm 13, and the rotating arm 14 is located below the folding arm 13.

[0067] Furthermore, the top of the column 11 is hinged to the cantilevered rotating arm 12 through a bearing; the anti-overturning structure 16 is also hinged on the column 11, and the end of the anti-overturning structure 16 away from the column 11 is fixedly connected to the cantilevered rotating arm 12.

[0068] Furthermore, as shown in Figures 1 and 4, a first gear motor 17 and a drive wheel 19 are provided on the anti-overturning structure 16, and a circular track 111 is provided on the column 11. The first gear motor 17 (electric gear motor) drives the drive wheel 19 to rotate along the circular track 111 via the first gear shaft 18, thereby driving the anti-overturning structure 16 and the cantilevered rotating arm 12 to rotate horizontally around the column 11. External meshing teeth are provided on the outer walls of the first gear shaft 18 and the drive wheel 19, and the two are driven by gear meshing. The drive wheel 19 contacts the circular track 111 on the column 11 and performs a rotational motion.

[0069] Furthermore, the cantilevered rotating arm 12 cooperates with the column 11 through the anti-overturning structure 16 to ensure that the cantilevered rotating arm 12 can work normally.

[0070] Furthermore, as shown in Figures 1 and 3, at least two protection wheels 110 are provided on the anti-overturning structure 16 at intervals around the circular track 111. In a specific embodiment of the present disclosure, the anti-overturning structure 16 is provided with two drive wheels 19 and four protection wheels 110. The protection wheels 110 surround the circular track 111 on the column 11. The two drive wheels 19 are in contact with the circular track 111 on the column, and the four protection wheels 110 are in contact with the circular track 111 or have a certain gap reserved therebetween, and rotate around the column 11.

[0071] Furthermore, as shown in Figure 1, the cantilever rotating arm 12 and the folding arm 13 are hinged by a first slewing bearing 112, and external meshing teeth are provided on the outer wall of the first slewing bearing 112. A second gear motor 113 (electric gear motor) is provided on the folding arm 13, and a second gear shaft 114 is provided on the second gear motor 113. External meshing teeth are provided on the outer wall of the second gear shaft 114. The second gear motor 113 drives the first slewing bearing 112 to rotate via the second gear shaft 114 to drive the folding arm 13 to rotate horizontally. The slewing meshing drive between the cantilever rotating arm 12 and the folding arm 13 can also be internal meshing. The slewing between the cantilever rotating arm 12 and the folding arm 13 can also be directly driven by a drive unit such as a cylinder, a hydraulic cylinder, or an electric push rod. At this time, the center of rotation is the center of the connecting shaft of the cantilever rotating arm 12 and the folding arm 13.

[0072] Furthermore, as shown in Figure 1, folding arm 13 and rotating arm 14 are hingedly connected via a second slewing bearing 115. Rotating arm 14 is manually driven; alternatively, it can be electrically driven. When manually driven, the terminal pipes for sand suction and filling rotate with the arm, forming a circular trajectory that aligns with the sealing position.

[0073] In a specific embodiment of the present disclosure, as shown in FIG2 , the rotating folding mechanical arm 1 has three working positions, namely, the trolley masonry position 1, the trolley masonry position 2 and the idle position. When in the trolley masonry position 1, the rotation centers of the cantilevered rotating arm 12, the folding arm 13 and the rotating arm 14 are in the same vertical plane, and the rotation center of the rotating arm coincides with the center of the trolley masonry 1; the trolley masonry 2 position is the position when the rotation center of the rotating arm 14 coincides with the center of the trolley masonry 2. The cantilevered rotating arm 12 and the folding arm 13 are driven by an electric gear motor (a first gear motor 17 and a second gear motor 113) so that the rotation center of the rotating arm 14 coincides with the center of the trolley masonry 2. In the process of turning from the trolley masonry 1 to the trolley masonry 2, the running trajectory of the rotation center of the rotating arm 14 is approximately a straight line; after completing the cleaning and filling of the sealing sand at the trolley masonry 1 and trolley masonry 2 positions, the rotating folding mechanical arm 1 returns to the idle position.

[0074] The specific structure of the sand suction system 2 is as follows:

[0075] As shown in Figures 1, 3 and 5, the sand suction system 2 includes a sand suction nozzle 21, a sand suction hose 22, a cyclone dust collector 23, a negative pressure bag type gas-solid separator 24 and an air compressor 25 connected in sequence. The sand suction nozzle 21 and the sand suction hose 22 constitute the sand suction part, and the cyclone dust collector 23 and the negative pressure bag type gas-solid separator 24 constitute the deposition part. The sealing sand is deposited once through the cyclone dust collector 23 installed on the working platform 5, and then deposited twice through the negative pressure bag type gas-solid separator 24. The sand suction system 2 realizes mechanical cleaning of the sealing sand. The inlet of the sand suction hose 22 is connected to the sand suction nozzle 21 through the end sand suction pipe 28. The sand suction hose 22 is mounted on the folding arm 13 and the cantilevered rotating arm 12, and the end sand suction pipe 28 is mounted on the rotating arm 14. The sand suction nozzle 21 can be switched to the masonry position of each trolley as the rotating arm 14, folding arm 13 and cantilevered rotating arm 12 move; the air compressor 25 rotates to generate negative pressure in the sand suction system 2, and the sand suction nozzle 21 absorbs the sealing sand at the trolley masonry under the action of negative pressure. The cyclone dust collector 23 deposits the sealing sand passing through the sand suction nozzle 21 and the sand suction hose 22 once, and the negative pressure bag-type gas-solid separator 24 deposits the sealing sand passing through the cyclone dust collector 23 twice.

[0076] The cyclone dust collector 23 is arranged on the upper part of the working platform 5 , and its outlet is connected to the inlet of the negative pressure bag type gas-solid separator 24 through a pipeline.

[0077] 3 , a feed valve 26 is provided at the bottom end of the cyclone dust collector 23, and the feed valve 26 is connected to the automatic screening system 3. The feed valve 26 is an electric star-shaped feed valve, which is electrically controlled to open and close.

[0078] Furthermore, as shown in Figure 3, a discharge valve 27 is provided at the bottom of the negative pressure bag type gas-solid separator 24. The discharge valve 27 is a star-shaped discharge valve. The air outlet of the negative pressure bag type gas-solid separator 24 is connected to the air inlet of the air compressor 25 via a pipe. The negative pressure bag type gas-solid separator 24 is mounted on the upper portion of the work platform 5. The lower ash hopper of the negative pressure bag type gas-solid separator 24 is connected to the discharge valve 27, which is electrically controlled to open and close. The outlet of the discharge valve 27 is connected to the discharge bag at the bottom via a pipe.

[0079] Furthermore, the sand suction nozzle 21 is a double-barrel straight suction nozzle, which meets the sand suction volume requirement during production. The sand suction hose 22 adopts a high temperature and wear resistant hose.

[0080] Further, as shown in FIG1 and FIG3 , the terminal sand suction pipe 28 is fixed on the rotating arm 14 and rotates with the rotating arm 14 . One end of the terminal sand suction pipe 28 is connected to the sand suction nozzle 21 , and the other end is connected to the sand suction hose 22 .

[0081] A portion of the sand suction hose 22 is fixed to the folding arm 13 and the cantilevered rotating arm 14. The other end of the sand suction hose 22 is connected to the feed port of the cyclone dust collector 23. The sand suction hose 22 can withstand a certain temperature and is fixed to the folding arm 13 and the cantilevered rotating arm 12 without affecting their rotation. The other end of the sand suction hose 22 is connected to the feed port of the cyclone dust collector 23.

[0082] Furthermore, an air compressor 25 is arranged on the working platform 5 or the foundation. A muffler is provided at the outlet of the air compressor 25. The air compressor 25 generates a large vacuum pressure and a large air volume, which forms a very large negative pressure in the sand suction system, causing the sealing sand to be sucked into the sand suction system 2, where it is deposited and filtered.

[0083] The sand suction system 2 utilizes the high-speed rotation of the air compressor 25 to generate a large negative pressure in the sand suction pipeline, thereby driving the sealing sand at the sand suction nozzle 21 into the sand suction hose 22. When the sealing sand is transported to the cyclone dust collector 23, due to the sudden and substantial decrease in pressure and flow rate, most of the sealing sand is deposited in the cyclone dust collector 23; driven by the airflow, the tiny particles of sealing sand continue to flow toward the negative pressure bag-type gas-solid separator 24, where they are deposited and fall. The tiny particles of sealing sand collected by the bag dust collector can be regularly unloaded.

[0084] The specific structure of the automatic screening system 3 is as follows:

[0085] As shown in Figures 1 and 3 , the automatic screening system 3 includes a vibrating screen 31, which is connected to the outlet of the cyclone dust collector 23. A sand discharge outlet is provided at the bottom of the vibrating screen 31. This outlet is connected to a sand storage chamber 34 through a magnetic iron remover 33. The outlet of the sand storage chamber 34 is connected to the sand filling system 4. A waste bag is connected to the side of the sand storage chamber 34; unqualified sealing sand is transferred to the waste bag through a bypass pipe.

[0086] Furthermore, a vibration motor 32 is connected to the vibrating screen 31. Multiple layers of screens are provided within the vibrating screen 31. The vibration motor 32 drives the vibrating screen 31 to vibrate and screen the sealing sand from the cyclone dust collector 23. Each screen has a different mesh size. In one embodiment of the present disclosure, two vibration motors 32 are used.

[0087] Furthermore, the magnetic iron remover 33 is a pull-out, quick-cleaning structure, comprising a drawer housing a removable magnetic block. With the magnetic block housed within the drawer, iron powder removal requires only pulling out the drawer and removing the magnetic block, facilitating maintenance and cleaning. The magnetic iron remover 33 is positioned between the vibrating screen 31 and the sand storage chamber 34. As the sealed sand descends into the sand storage chamber 34, the iron oxide powder within is absorbed by the magnetic iron remover 33.

[0088] 3 , a feeder 35 is provided at the outlet of the sand storage chamber 34 , the feeder 35 is connected to an inclined first material barrel 36 , and the outlet of the first material barrel 36 is connected to the sand filling system 4 . The feeder 35 is an electric feeder.

[0089] The connection between the discharge port of the sand storage chamber 34 and the bucket elevator 41 can also be replaced by a screw conveyor or other automatic conveying equipment.

[0090] When the feeding valve 26 is opened, the sealing sand enters the automatic screening system 3 from the bottom of the cyclone dust collector 23 and falls on the screen of the vibrating screen 31. The vibrating screen 31 is driven by a vibration motor 32. Screens of different mesh sizes are set inside the vibrating screen 31 for screening layer by layer. The sealing sand is 100% screened by the vibrating screen 31. After screening, the qualified sealing sand falls into the sand storage chamber 34, and the unqualified sealing sand enters the waste bag and is manually transported away regularly. The magnetic iron remover 33 is set at the sand discharge outlet position of the vibrating screen 31. As the qualified sealing sand falls into the sand storage chamber 34, the iron oxide powder in it is removed. A feeder 35 is set below the sand storage chamber 34 and is electrically driven to open and close. After the feeder 35 is opened, the sealing sand in the sand storage chamber 34 flows through the first material barrel 36 to the feeding funnel 413 of the bucket elevator.

[0091] The specific structure of the sand filling system 4 is as follows:

[0092] As shown in Figures 1, 2 and 3, the sand filling system 4 includes a feeding part and a conveying part. The feeding part includes a bucket elevator 41 connected to the automatic screening system 3, and the conveying part includes a screw conveyor group. The outlet of the bucket elevator 41 is connected to the screw conveyor group, and the screw conveyor group can rotate with the folding arm 13 and the cantilevered rotating arm 12. The screw conveyor group is used to convey the sealing sand from the bucket elevator 41; the outlet of the screw conveyor group is connected to the terminal sand filling pipe 45, and the terminal sand filling pipe 45 is connected to the rotating arm 14. The terminal sand filling pipe 45 is used to fill the sealing sand into the trolley masonry.

[0093] 1 and 2, the screw conveyor unit includes a first screw conveyor 43 and a second screw conveyor 44. The first screw conveyor 43 is connected to the cantilevered rotating arm 12, and the second screw conveyor 44 is connected to the folding arm 13. The outlet of the bucket elevator 41 is connected to the inclined second material barrel 42, and the outlet of the second material barrel 42 is connected to the feed port of the first screw conveyor 43. The outlet center of the second material barrel 42 and the feed port center of the first screw conveyor 43 are both aligned with the return line of the cantilevered rotating arm 12 relative to the column. The rotation centers coincide; the discharge port of the first screw conveyor 43 is connected to the feed port of the second screw conveyor 44, and the discharge port center of the first screw conveyor 43 and the feed port center of the second screw conveyor 44 both coincide with the rotation center between the cantilevered rotating arm 12 and the folding arm 13; the discharge port of the second screw conveyor 44 is connected to the end sand filling pipe 45 through the material receiving funnel 410, and the discharge port center of the second screw conveyor 44 and the center of the material receiving funnel 410 both coincide with the rotation center between the rotating arm 14 and the folding arm 13.

[0094] The tubular screw conveyor can be replaced by other structural types such as belt conveyor, buried plate conveyor, scraper conveyor, and material barrel with a certain inclination.

[0095] Further, as shown in Figures 1 and 2, a first mounting bracket 46 is provided on the cantilevered rotating arm 12, and the first screw conveyor 43 is installed on the first mounting bracket 46; a second mounting bracket 48 is provided on the folding arm 13, and the second screw conveyor 44 is installed on the second mounting bracket 48.

[0096] The first screw conveyor 43 is driven by a third gear motor 47 (electric gear motor), and the second screw conveyor 44 is driven by a fourth gear motor 49 (electric gear motor).

[0097] Furthermore, as shown in Figures 1 and 2, the bucket elevator 41 includes a shell 414 fixed on a steel structure or a foundation, an upper roller 417 and a lower roller 418 are arranged in the shell 414, a lifting belt 415 is sleeved on the upper roller 417 and the lower roller 418, a plurality of lifting hoppers 416 are arranged on the lifting belt 415, and a bucket elevator driving device 419 (electric gear motor) is connected to the upper roller 417. The bucket elevator driving device 419 drives the lifting belt 415 to move up and down in a cycle by driving the upper roller 417; a feeding funnel 413 is arranged on the outside of the shell 414, and the feeding funnel 413 is used to fill each lifting hopper 416; the outlet of the sand storage chamber 34 is connected to the feeding funnel 413 through the first material barrel 36.

[0098] Driven by the roller, the lifting belt 415 continuously lifts the sealing sand from the bottom to the top through the lifting hopper 416 installed on the lifting belt 415 and throws it to the discharge port of the bucket elevator 41. The sealing sand falls downward along the inclined second material barrel 42 and falls into the feed port of the first screw conveyor 43 below.

[0099] Furthermore, as shown in FIG1 and FIG2 , a feeding platform 411 is provided on the outer wall of the shell 414 , and a blade 412 is provided on the feeding platform 411 .

[0100] At the loading position of the bucket elevator 41, a feeding funnel 413 is provided at one position connected to the first material barrel 36, and a feeding platform 411 is provided at the other position. Two blades 412 are provided on the feeding platform for automatically cutting open the sand bags to facilitate manual feeding.

[0101] The discharge port of the bucket elevator 41 is connected to the second material barrel 42, and the discharge center of the second material barrel 42 coincides with the feed port center of the first screw conveyor 43; the first screw conveyor 43 is mounted on the cantilevered rotating arm 12, and a first mounting bracket 46 is provided between the first screw conveyor 43 and the cantilevered rotating arm 12. The first mounting bracket 46 is connected to the first screw conveyor 43 by bolts, and is connected to the cantilevered rotating arm 12 by welding or bolts. The first screw conveyor 43 is driven by a third gear motor 47 to transport the sealing sand from the feed port position to the discharge port position. In this embodiment, the first screw conveyor 43 is A second screw conveyor 44 of the tubular screw conveyor type is installed on the folding arm 13. A second mounting bracket 48 is provided between the second screw conveyor 44 and the folding arm 13. The second mounting bracket 48 is connected to the second screw conveyor 44 by bolts, and is connected to the folding arm 13 by welding or bolts. The second screw conveyor 44 is driven by a fourth gear motor 49 to transport the sealing sand from the feed port position to the discharge port position. In this embodiment, the fourth gear motor 49 adopts a tubular screw conveyor type. The end sand filling pipe 45 is fixed on the rotating arm 14 and rotates with the rotating arm 14 to fill the trolley masonry with sealing sand.

[0102] Bucket elevators can be replaced by vertical or inclined screw conveyors and other types of conveyors.

[0103] Each gear motor or drive device disclosed herein uses an electric gear motor, which can also be replaced by a hydraulic motor. The drive structure can also use a belt drive, chain drive or other transmission mechanism to replace the electric gear motor.

[0104] Figure 2 shows the trolley masonry position 1, trolley masonry position 2, and idle position. In the trolley masonry position 1, the rotation centers of the cantilevered rotating arm 12, folding arm 13, and rotating arm 14 are in the same vertical plane. The rotation of rotating arm 14 is used to clean and fill the sealing sand in trolley masonry position 1. The trolley masonry position 2 is when the rotating arm's rotation center coincides with the center of trolley masonry position 2. The cantilevered rotating arm 12 and folding arm 13 are driven by an electric gear motor so that the rotating arm's rotation center coincides with the center of trolley masonry position 2. The rotating arm's rotation is used to clean and fill the sealing sand in trolley masonry position 2. During the movement from trolley masonry position 1 to trolley masonry position 2, the trajectory of the rotating arm's rotation center is approximately a straight line. After completing the cleaning and filling of the sealing sand at trolley masonry positions 1 and 2, the rotating and folding robotic arm returns to the idle position.

[0105] The use process of the cleaning, screening and filling device for high-temperature annealing annular furnace sealing sand disclosed in the present invention is as follows:

[0106] After the trolley reaches the unloading position, the crane lifts the inner cover (existing technology) and transports the steel coil, and then the sealing sand can be cleaned. At this time, the remote control controls the rotating folding mechanical arm 1, so that the rotation center of the rotating arm 14 moves to the center of the trolley masonry 1, and the sand suction system 2 is activated. By rotating the rotating arm 14, the sand suction nozzle 21 is controlled to clean the surface of the sealing sand on the trolley masonry 1. The cleaned sealing sand and iron oxide powder are transported to the cyclone dust collector 23 through the sand suction hose 22. The tiny particles of sealing sand are deposited in the negative pressure bag-type gas-solid separator 24. After the surface of the sealing sand is cleaned, the sand suction system 2 is closed. Then start the automatic screening system 3, open the feeding valve 26, and let the sealing sand deposited in the cyclone dust collector 23 fall onto the screen of the vibrating screen 31. The vibrating screen is driven by the vibration motor 32. The sealing sand that passes the screening falls into the sand storage chamber 34 below. During the falling process, the sealing sand passes through the magnetic iron remover 33 between the vibrating screen 31 and the sand storage chamber 34. The iron oxide powder in the sealing sand is removed by the magnetic iron remover 33, and the unqualified sealing sand falls into the waste bag through the side pipe. After the screening is completed, turn off the automatic screening system 3; then start the sand filling system 4, and start the feeder 35. The sealing sand flows through the inclined first material barrel 36 to the bucket elevator's feed hopper 413. The sealing sand is lifted to a high position by the bucket elevator 41 and flows from the bucket elevator 41's discharge port through the inclined second material barrel 42 to the feed port of the first screw conveyor 43. The sealing sand is then transported from the feed port to the discharge port by the first screw conveyor 43 and flows into the feed port of the second screw conveyor 44. The sealing sand is then transported from the feed port to the discharge port by the second screw conveyor 44 and flows into the terminal sand filling pipe 45. The rotating arm 14 rotates, allowing the sealing sand to be filled onto the trolley's masonry section 1. When the trolley's masonry section 1 is replenished with sealing sand, the rotating folding robot arm 1 is controlled by a remote control, so that the rotating center of the rotating arm 14 moves to the position of the trolley's masonry section 2, and the above-mentioned sealing sand cleaning, screening, and filling operations are continued. When the trolley's masonry section 2 is replenished with sealing sand, the rotating folding robot arm 1 is controlled by a remote control to stop at an idle position. Wait for the trolley to move to the next material level and remove the steel coil, and then repeat the above process.

[0107] As described above, the cleaning, screening and filling device for high-temperature annealing annular furnace sealing sand disclosed in the present invention has the following beneficial effects:

[0108] The cleaning, screening and filling device for sealing sand in a high-temperature annealing annular furnace disclosed herein realizes a closed working cycle of online cleaning, screening and filling of sealing sand through the configuration and integration of sand suction, screening and filling systems and a reasonable plane layout based on the physical properties and logistics direction of the sealing sand, thereby reducing the consumption of sealing sand, the number of operators and the labor intensity of the operators, and at the same time ensuring the occupational health and safety of the operators.

[0109] The present invention adopts a combination of a rotating folding mechanical arm, a sand suction, screening and filling mechanism to realize the automatic positioning, sand suction, screening and sand filling functions on different trolley masonry, realizes the online closed working circulation utilization of sealing sand, and has the function of replenishing new sealing sand; under a relatively high ambient temperature, one operator can complete the cleaning, screening and filling work of the sealing sand, and the operation time can be guaranteed.

[0110] The above description is only an illustrative embodiment of the present disclosure and is not intended to limit the scope of the present disclosure. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present disclosure shall fall within the scope of protection of the present disclosure.

Claims

1. A device for cleaning, screening and filling sealing sand of a high-temperature annealing annular furnace, wherein: include, Rotating and folding mechanical arm for rotating and switching to multiple trolley masonry positions of the ring furnace; The sand suction system is used for negative pressure absorption of sealing sand at the trolley masonry of the annular furnace, and comprises a sand suction part and a deposition part. The sand suction part is installed on the rotating folding mechanical arm and can rotate with it; the deposition part is used to deposit the sealing sand transported by the sand suction part at least once; An automatic screening system, connected to the sand suction system, comprising a vibrating screen and a magnetic iron remover, for automatically screening the sealing sand from the sand suction system; The sand filling system is used to fill the masonry of each trolley with sealing sand, and comprises a feeding part and a conveying part, wherein the conveying part is installed on the rotating folding mechanical arm and can rotate with it; the feeding part comprises a feeding funnel, and the outlet of the automatic screening system can be connected to the feeding funnel; A remote controller is connected with the rotating and folding mechanical arm, the sand suction system, the automatic screening system and the sand filling system through electrical signals.

2. The cleaning, screening and filling device for high temperature annealing ring furnace sealing sand according to claim 1, wherein: The rotating folding mechanical arm includes a fixed column, a cantilevered rotating arm hinged on the column and capable of horizontally rotating around the column, a folding arm hinged at the other end of the cantilevered rotating arm away from the column and capable of horizontally rotating relative to the cantilevered rotating arm, and the folding arm is located above the cantilevered rotating arm; and a swivel arm at one end of the folding arm away from the column and capable of horizontally rotating relative to the folding arm, and the swivel arm is located below the folding arm.

3. The cleaning, screening and filling device for high temperature annealing ring furnace sealing sand according to claim 2, wherein: The sand suction system includes a sand suction nozzle, a sand suction hose, a cyclone dust collector, a negative pressure bag type gas-solid separator and an air compressor connected in sequence, the sand suction nozzle and the sand suction hose constitute the sand suction part, the cyclone dust collector and the negative pressure bag type gas-solid separator constitute the deposition part, the inlet of the sand suction hose is connected to the sand suction nozzle through a terminal sand suction pipe, the sand suction hose is mounted on the folding arm and the cantilevered rotating arm, the terminal sand suction pipe is mounted on the rotating arm, the sand suction nozzle can be switched to each trolley masonry position with the movement of the rotating arm, the folding arm and the cantilevered rotating arm; the operation of the air compressor generates negative pressure in the sand suction system, the sand suction nozzle absorbs the sealing sand at the trolley masonry under the action of the negative pressure, the cyclone dust collector performs a primary deposition of the sealing sand passing through the sand suction nozzle and the sand suction hose, and the negative pressure bag type gas-solid separator performs a secondary deposition of the sealing sand passing through the cyclone dust collector.

4. The cleaning, screening and filling device for high temperature annealing ring furnace sealing sand according to claim 3, wherein: The automatic screening system includes the vibrating screen, which is connected to the outlet of the cyclone dust collector. A sand outlet is arranged at the bottom end of the vibrating screen, and the sand outlet is connected to a sand storage chamber through the magnetic iron remover. The outlet of the sand storage chamber is connected to the sand filling system.

5. The cleaning, screening and filling device for high temperature annealing ring furnace sealing sand according to claim 4, wherein: The feeding part of the sand filling system includes a bucket elevator connected to the automatic screening system, and the feeding part includes a screw conveyor unit. The outlet of the bucket elevator is connected to the screw conveyor unit, and the screw conveyor unit can rotate with the folding arm and the cantilevered rotating arm. The screw conveyor unit is used to convey the sealing sand from the bucket elevator; the outlet of the screw conveyor unit is connected to the terminal sand filling pipe, and the terminal sand filling pipe is connected to the rotating arm. The terminal sand filling pipe is used to fill the sealing sand into the trolley masonry.

6. The cleaning, screening and filling device for high temperature annealing ring furnace sealing sand according to claim 2, wherein: The top of the column is hinged to the cantilevered rotating arm through a bearing; an anti-overturning structure is also hinged on the column, and one end of the anti-overturning structure away from the column is fixedly connected to the cantilevered rotating arm.

7. The cleaning, screening and filling device for high temperature annealing annular furnace sealing sand according to claim 6, wherein: A first gear motor and a driving wheel are arranged on the anti-overturning structure, and a circular track is arranged on the column. The first gear motor drives the driving wheel to rotate along the circular track through a first gear shaft to drive the anti-overturning structure and the cantilevered rotating arm to rotate horizontally around the column.

8. The cleaning, screening and filling device for high temperature annealing annular furnace sealing sand according to claim 7, wherein: At least two protection wheels are arranged on the anti-overturning structure at intervals around the circular track.

9. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 2, wherein: The cantilever rotating arm and the folding arm are hinged by a first slewing bearing, external meshing teeth are arranged on the outer wall of the first slewing bearing, a second gear motor is arranged on the folding arm, a second gear shaft is arranged on the second gear motor, external meshing teeth are arranged on the outer wall of the second gear shaft, and the second gear motor drives the first slewing bearing to rotate through the second gear shaft to drive the folding arm to rotate horizontally.

10. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 2, wherein: The folding arm and the rotating arm are hingedly connected via a second slewing bearing.

11. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 3, wherein: The bottom end of the cyclone dust collector is connected to a feeding valve, and the feeding valve is connected to the automatic screening system.

12. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 11, wherein: The bottom end of the negative pressure bag type gas-solid separator is connected to a discharge valve.

13. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 3, wherein: The sand suction nozzle is a double-barrel straight suction nozzle.

14. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 4, wherein: The vibrating screen is connected to a vibrating motor, a plurality of screens are arranged inside the vibrating screen, and the vibrating motor drives the vibrating screen to vibrate and screen the sealing sand from the cyclone dust collector.

15. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 4, wherein: The magnetic iron remover is a pull-out type quick cleaning structure, comprising a pull-out box, in which a magnetic block is detachably arranged.

16. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 4, wherein: A feeder is arranged at the outlet of the sand storage chamber, and the feeder is connected to an inclined first material barrel, and the outlet of the first material barrel is connected to the sand filling system.

17. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 5, wherein: The screw conveyor unit includes a first screw conveyor and a second screw conveyor, the first screw conveyor is connected to the cantilevered rotating arm, and the second screw conveyor is connected to the folding arm; the outlet of the bucket elevator is connected to the inclined second material barrel, and the outlet of the second material barrel is connected to the feed port of the first screw conveyor, and the outlet center of the second material barrel and the feed port center of the first screw conveyor both coincide with the rotation center of the cantilevered rotating arm relative to the column; the discharge port of the first screw conveyor is connected to the feed port of the second screw conveyor, and the discharge port center of the first screw conveyor and the feed port center of the second screw conveyor both coincide with the rotation center between the cantilevered rotating arm and the folding arm; the discharge port of the second screw conveyor is connected to the terminal sand filling pipe through a material receiving funnel, and the discharge port center of the second screw conveyor and the center of the material receiving funnel both coincide with the rotation center between the rotating arm and the folding arm.

18. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 17, wherein: A first mounting bracket is arranged on the cantilevered rotating arm, and the first screw conveyor is mounted on the first mounting bracket; a second mounting bracket is arranged on the folding arm, and the second screw conveyor is mounted on the second mounting bracket.

19. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 5, wherein: The bucket elevator comprises a shell, an upper roller and a lower roller are arranged in the shell, a lifting belt is sleeved on the upper roller and the lower roller, a plurality of lifting hoppers are arranged on the lifting belt, a bucket elevator driving device is connected to the upper roller, and the bucket elevator driving device drives the lifting belt to move up and down in a circular motion by driving the upper roller; a feeding funnel is arranged on the outside of the shell, and the feeding funnel is used to fill each of the lifting hoppers; the outlet of the sand storage chamber is connected to the feeding funnel through a first material cylinder.

20. The cleaning, screening and filling device for sealing sand of a high temperature annealing annular furnace according to claim 19, wherein: A feeding platform is arranged on the outer wall of the shell, and a blade is also arranged on the feeding platform.

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