A cleaning device for impurities in a floating sand bucket and an online cleaning method thereof

Abstract

The present invention relates to a cleaning device for impurities in a floating sand bucket and an on-line cleaning method thereof, which includes an outer frame assembly. A screen is circumferentially arranged along the side surface of the outer frame assembly, and the bottom surface of the outer frame assembly is circumferentially and spacedly provided with openings or filter meshes that penetrate up and down; A switching component is equipped on the bottom surface of the outer frame assembly. A net group corresponding to each opening is circumferentially and spacedly arranged on the switching component. The switching component rotates relative to the bottom surface of the outer frame assembly within a preset angle. The net group overlaps with the filter mesh correspondingly or the net group shields the corresponding opening; The switching component is driven to rotate by an external power mechanism. Through the relative rotation between the switching component and the outer frame assembly, the opening is opened or closed. Combined with the up and down movement of the manipulator, sand enters or is screened inside the outer frame assembly, thereby realizing the automatic on-line cleaning of impurities in the floating sand bucket, with short time consumption and high efficiency. In particular, it can reliably utilize the gap of the production rhythm, greatly facilitating the normal progress of production.

Description

Technical Field

[0001] The present invention relates to the technical field of precision casting auxiliary equipment, and particularly to a cleaning device for impurities in a floating sand bucket and an online cleaning method therefor. Background Art

[0002] During the manufacturing process of the mold shell on the shell-making line, various raw and auxiliary materials are used, especially silica sol materials. During the manufacturing process of the mold shell, particulate matter is formed by combining with various sand materials, and these particulate matters all fall into the floating sand bucket; during the shell-making process, the particulate matter in the floating sand bucket may damage the mold shell being manufactured, resulting in the scrapping of the mold shell being manufactured.

[0003] In the prior art, to solve the problem of particulate matter in the floating sand bucket, the production line is regularly stopped every shift, and personnel enter the production line to manually transfer all the sand in the floating sand bucket through a sieve and then transfer it back into the bucket to remove the particulate matter in the floating sand bucket regularly. The existing cleaning method is time-consuming and laborious, and there are problems such as limited number of manual cleanings, high labor intensity, and many potential safety hazards. Moreover, the line stop cleaning will also cause losses in time and efficiency, and the existing cleaning method also has certain safety risks. Summary of the Invention

[0004] The applicant of the present invention aims at the above-mentioned disadvantages in the existing production technology and provides a cleaning device for impurities in a floating sand bucket with a reasonable structure and an online cleaning method therefor, thereby realizing the automatic online cleaning of impurities in the floating sand bucket, which takes a short time and has high efficiency. In particular, it can reliably utilize the gap of the production rhythm, greatly facilitating the normal progress of production.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A cleaning device for impurities in a floating sand bucket includes an outer frame assembly. A screen is circumferentially arranged around the side of the outer frame assembly. The bottom surface of the outer frame assembly is circumferentially and spacedly provided with openings or filters that are vertically through; a switching component is equipped on the bottom surface of the outer frame assembly. A group of meshes corresponding to the openings one by one are circumferentially and spacedly arranged on the switching component. The switching component rotates relative to the bottom surface of the outer frame assembly within a preset angle. The group of meshes overlaps with the filter or the group of meshes shields the corresponding openings; the switching component is driven to rotate by an external power mechanism.

[0007] As a further improvement of the above technical solution:

[0008] It further includes a resistance increasing component arranged in the outer frame assembly. The resistance increasing component applies resistance to the outer frame assembly to rotate synchronously with the switching component, prompting the outer frame assembly to rotate relative to the switching component. The relative rotation causes the opening to change from open to closed or from closed to open.

[0009] A central shaft is rotatably installed through the axial center of the upper and lower through outer frame assembly. The central shaft is fixedly installed with the opening and closing assembly. The external power mechanism clamps the top of the central shaft, and the external power mechanism drives the opening and closing assembly to rotate via the central shaft.

[0010] The structure of the outer frame assembly is as follows: it includes annular frames arranged in parallel at upper and lower intervals. The annular frames are supported and connected by vertical beams arranged at circumferential intervals. A screen is enclosed between the circumferential edges of the upper and lower annular frames; an upper central plate and a lower central plate are respectively arranged at the centers of the upper and lower annular frames. The central shaft passes through the upper central plate and the lower central plate and is rotatably fitted. An upper support beam is radially connected between the circumferential edge of the upper central plate and the upper annular frame, and a lower support beam is radially connected between the circumferential edge of the lower central plate and the lower annular frame; a radial beam is also installed between the edge of the lower central plate between two adjacent lower support beams and the lower annular frame. A filter screen is arranged between the radial beam and one adjacent lower support beam, and an opening is formed between the radial beam and the other adjacent lower support beam.

[0011] The upper support beams are arranged corresponding to the vertical beams, and diagonal support beams are jointly installed between the ends of the upper support beams and the vertical beams that are far away from each other. A resistance net is laid in the triangular area formed by the upper support beam, the vertical beam and the diagonal support beam to form a resistance increasing component.

[0012] A lower shaft sleeve is fixedly sleeved on the central shaft. Sector-shaped frames corresponding to the filter screens one by one are installed at intervals along the circumference of the edge of the lower shaft sleeve, and a net group is laid in the sector-shaped frames.

[0013] The cross-section of the lower annular frame is an L-shaped structure, and the cross-section of the lower support beam is a "⊥" - shaped structure. The sector-shaped frames move along the horizontal planes of the annular frame, the lower support beam and the radial beam. Limit pins are also installed on the inner side surface of the lower annular frame and the side surface of the lower support beam to prevent the sector-shaped frames from disengaging upward from the inner bottom surface of the outer frame assembly.

[0014] An upper shaft sleeve is fixedly sleeved on the central shaft. A circular hole penetrating up and down is opened on the upper shaft sleeve, and an arc-shaped groove is opened on the upper central plate. A pin is installed through the arc-shaped groove and the circular hole from top to bottom; the central angle of the arc-shaped groove is consistent with the preset angle of the relative rotation between the opening and closing assembly and the outer frame assembly.

[0015] The preset angle of the relative rotation of the opening and closing assembly with respect to the outer frame assembly is 360° / 2N, where N is a positive integer.

[0016] An online cleaning method for the cleaning device of impurities in the floating sand bucket. The external power mechanism is a manipulator. The manipulator clamps the top of the central shaft via the end clamping mechanism. The bottom surface of the floating sand bucket is connected and communicated to a blower;

[0017] The online cleaning method includes the following steps:

[0018] The manipulator holds the central shaft, lifts the cleaning device and slowly places it into the floating sand bucket. While placing it, the manipulator drives the opening and closing assembly to rotate in the positive direction along the central shaft.

[0019] At the same time, the fan works, and the air flow enters the bottom of the floating sand bucket, causing the sand in the floating sand bucket to start churning.

[0020] When the opening and closing assembly rotates in the positive direction, the churning sand and the resistance increasing assembly jointly cause the outer frame assembly to rotate slower than the opening and closing assembly in the positive direction, thus forming a relative rotation of the opening and closing assembly relative to the outer frame assembly in the positive direction, and causing the mesh group of the opening and closing assembly to gradually move away from the opening at the bottom surface of the outer frame assembly until the opening is completely opened.

[0021] As the cleaning device descends relative to the floating sand bucket, the churning sand enters the outer frame assembly through the opening until the cleaning device moves down relative to the floating sand bucket to a preset position.

[0022] The manipulator drives the opening and closing assembly to rotate in the reverse direction, causing a relative rotation in the reverse direction between the outer frame assembly and the opening and closing assembly, and the opening is gradually blocked by the mesh group until it is completely closed.

[0023] The manipulator drives the cleaning device to move upward relative to the floating sand bucket, and the sand inside the outer frame assembly falls from the side screen, the bottom filter screen, and the mesh group to the floating sand bucket, and large particles remain inside the outer frame assembly.

[0024] The manipulator drives the cleaning device to move outside the floating sand bucket, turns the cleaning device upside down so that the opening faces downward, and the large particles inside the outer frame assembly are poured out.

[0025] The beneficial effects of the present invention are as follows:

[0026] The structure of the present invention is compact, reasonable, and easy to operate. The opening is opened or closed by the relative rotation between the opening and closing assembly and the outer frame assembly. Combined with the up and down movement of the manipulator, sand enters or is screened inside the outer frame assembly, thereby realizing the automatic on-line cleaning of impurities in the floating sand bucket. It takes a short time and has high efficiency. In particular, it can reliably utilize the gap of the production rhythm to keep the particulate matter in the floating sand bucket at a relatively low level all the time, greatly facilitating the normal progress of production.

[0027] The present invention also has the following advantages:

[0028] On the basis of the relative rotation freedom between the opening and closing assembly and the outer frame assembly, through the setting of the resistance increasing assembly, the asynchronism of the rotation between the outer frame assembly and the opening and closing assembly is effectively guaranteed, thereby realizing the reliability of the opening and closing of the opening at the bottom surface of the outer frame assembly and effectively ensuring the smooth progress of automatic sand screening.

[0029] The setting of the central axis, on the one hand, facilitates the grasping by the external manipulator for the downward movement, upward movement and other movements of the cleaning device, and on the other hand, also transmits the rotational power to the opening and closing assembly through the central axis to make it rotate, and provides structural support for the reliable relative rotation between the outer frame assembly and the opening and closing assembly. The concept is ingenious, the overall structure is simple, the weight is light, and it is convenient for smooth use in daily production. Brief Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of the cleaning device of the present invention.

[0031] Figure 2 It is a cross-sectional view of the cleaning device of the present invention.

[0032] Figure 3 It is an exploded view of the cleaning device of the present invention (the screen is omitted).

[0033] Figure 4 It is a schematic diagram of the state during on-line cleaning of the present invention.

[0034] Figure 5 It is a schematic diagram of the cleaning device of the present invention when the bottom opening is in a closed state (the screen is omitted).

[0035] Figure 6 It is a schematic diagram of the cleaning device of the present invention when the bottom opening is in a half-open and half-closed state (the screen is omitted).

[0036] Figure 7 It is a schematic diagram of the cleaning device of the present invention when the bottom opening is in an open state (the screen is omitted).

[0037] Wherein: 1. Outer frame assembly; 2. Resistance increasing assembly; 3. Opening and closing assembly; 4. Central axis; 5. Manipulator; 6. Clamping mechanism; 7. Floating sand bucket; 8. Fan;

[0038] 11. Upper central plate; 12. Upper support beam; 13. Ring frame; 14. Vertical beam; 15. Limit pin; 16. Lower support beam; 17. Radial beam; 18. Filter screen; 19. Lower central plate; 111. Arc groove;

[0039] 21. Diagonal support beam; 22. Resistance net;

[0040] 31. Sector frame; 32. Lower bushing; 33. Mesh group;

[0041] 41. Upper bushing; 42. Pin; Detailed Description of the Invention

[0042] The following will describe the specific embodiments of the present invention with reference to the drawings.

[0043] Such as Figure 1 、 Figure 2 AndFigure 3 As shown in the figure, a cleaning device for impurities in a floating sand bucket in this embodiment includes an outer frame assembly 1. A screen is circumferentially arranged on the side of the outer frame assembly 1. The bottom surface of the outer frame assembly 1 is circumferentially and spacedly provided with openings or filter screens 18 that penetrate up and down; a switching assembly 3 is installed on the bottom surface of the outer frame assembly 1. A set of meshes 33 corresponding to the openings one by one are circumferentially and spacedly arranged on the switching assembly 3. The switching assembly 3 rotates relative to the bottom surface of the outer frame assembly 1 within a preset angle. The set of meshes 33 overlaps with the filter screen 18 correspondingly or the set of meshes 33 shields the corresponding openings; the switching assembly 3 is driven to rotate by an external power mechanism.

[0044] In this embodiment, the opening or closing of the opening is realized by the relative rotation between the switching assembly 3 and the outer frame assembly 1. Combined with the up and down movement of the external manipulator 5, sand enters or is screened inside the outer frame assembly 1, thereby realizing the automatic on-line cleaning of impurities in the floating sand bucket 7.

[0045] It further includes a resistance increasing assembly 2 arranged inside the outer frame assembly 1. The resistance increasing assembly 2 applies resistance to the synchronous rotation of the outer frame assembly 1 along with the switching assembly 3, prompting the outer frame assembly 1 to rotate relative to the switching assembly 3. The relative rotation causes the opening to change from open to closed or from closed to open.

[0046] On the basis of the relative rotation freedom between the switching assembly 3 and the outer frame assembly 1, through the setting of the resistance increasing assembly 2, the asynchronous rotation between the outer frame assembly 1 and the switching assembly 3 is effectively ensured, thereby realizing the reliability of the opening and closing of the opening on the bottom surface of the outer frame assembly 1 and effectively guaranteeing the smooth progress of automatic sand screening.

[0047] A central shaft 4 is rotatably installed through the axial center of the outer frame assembly 1 up and down. The central shaft 4 is fixedly installed with the switching assembly 3. The external power mechanism clamps the top of the central shaft 4, and the external power mechanism drives the switching assembly 3 to rotate via the central shaft 4.

[0048] The setting of the central shaft 4 is convenient for the external manipulator 5 to grab for the downward movement, upward movement and other movement modes of the cleaning device on the one hand. On the other hand, the rotational power is also transmitted to the switching assembly 3 via the central shaft 4 to make it rotate, and the central shaft 4 provides structural support for the reliable relative rotation between the outer frame assembly 1 and the switching assembly 3. The concept is ingenious, the overall structure is simple, the weight is light, and it is convenient for smooth use in daily production.

[0049] The structure of the outer frame assembly 1 is as follows: It includes annular frames 13 arranged in parallel at upper and lower intervals. The annular frames 13 are supported and connected by vertical beams 14 arranged at circumferential intervals. A sieve mesh is enclosed between the circumferential edges of the upper and lower annular frames 13, forming the overall cylindrical frame structure of the outer frame assembly 1. An upper central plate 11 and a lower central plate 19 are respectively arranged at the centers of the upper and lower annular frames 13. The central shaft 4 passes through the upper central plate 11 and the lower central plate 19 and is rotationally assembled, realizing the relative rotational installation between the outer frame assembly 1, the central shaft 4, and the opening and closing assembly 3. An upper support beam 12 is radially connected between the circumferential edge of the upper central plate 11 and the upper annular frame 13, and a lower support beam 16 is radially connected between the circumferential edge of the lower central plate 19 and the lower annular frame 13. A radial beam 17 is also installed between the edge of the lower central plate 19 located between two adjacent lower support beams 16 and the lower annular frame 13. A filter mesh 18 is arranged between the radial beam 17 and one adjacent lower support beam 16, and an opening is formed between the radial beam 17 and the other adjacent lower support beam 16.

[0050] In this embodiment, the overall shape of the outer frame assembly 1 is set as a cylindrical structure, and the opening and closing assembly 3 is set as a circular structure matching the inner bottom surface of the outer frame assembly 1, so as to effectively ensure that during the rotation process, the opening on the bottom surface of the outer frame assembly 1 can be reliably opened or closed, ensuring that when the opening is opened, the external sand can smoothly enter the outer frame assembly 1 through the opening, and when the opening is closed, the sand in the outer frame assembly 1 can be smoothly sieved.

[0051] The upper support beam 12 and the vertical beam 14 are arranged correspondingly. A diagonal support beam 21 is jointly installed between the ends of the upper support beam 12 and the vertical beam 14 that are far away from each other. A resistance net 22 is laid in the triangular area formed by the upper support beam 12, the vertical beam 14, and the diagonal support beam 21, forming the resistance increasing assembly 2.

[0052] In this embodiment, based on the frame structure of the outer frame assembly 1, the resistance net 22 is ingeniously set to increase the resistance during the rotation of the outer frame assembly 1 and the opening and closing assembly 3. The overall structure is simple, lightweight, and has a good use effect.

[0053] In this embodiment, the radial beam 17 bisects the angle formed between two adjacent lower support beams 16, and the sector angle of the opening forms the preset angle for the relative rotation between the opening and closing assembly 3 and the outer frame assembly 1. Of course, in order to effectively ensure the reliable closing of the opening in the closed state, the sector angle of the opening can be appropriately smaller than the preset angle of rotation.

[0054] A lower shaft sleeve 32 is fixedly sleeved on the central shaft 4. Sector frames 31 corresponding to the filter meshes 18 one by one are installed at circumferential intervals on the edge of the lower shaft sleeve 32. A mesh group 33 is laid in the sector frames 31. The central shaft 4 drives the sector frames 31 and the mesh group 33 to rotate synchronously through the lower shaft sleeve 32, forming the opening and closing assembly 3.

[0055] In this embodiment, the shape of the inner mesh group 33 in the sector frame 31 is the same as or slightly larger than the shape of the corresponding opening, so as to ensure the reliable opening or closing of the opening by the opening and closing assembly 3.

[0056] The cross-section of the lower annular frame 13 is an L-shaped structure, and the cross-section of the lower support beam 16 is a "⊥" shaped structure. The sector frame 31 moves horizontally along the annular frame 13, the lower support beam 16 and the radial beam 17. Limiting pins 15 are also installed on the inner side surface of the lower annular frame 13 and the side surface of the lower support beam 16. The limiting pins 15 prevent the sector frame 31 from disengaging upward from the inner bottom surface of the outer frame assembly 1, so as to effectively ensure the reliable fit of the opening and closing assembly 3 relative to the bottom surface of the outer frame assembly 1; at the same time, when the sector frame 31 rotates relative to the bottom surface of the outer frame assembly 1, the limiting pins 15 also play a role in guiding the rotation.

[0057] Of course, during the relative rotation of the outer frame assembly 1 and the opening and closing assembly 3 in the horizontal plane, the vertical walls of the lower support beams 16 on both sides of the rotation of the sector frame 31 play a role in limiting its rotation. When the sector frame 31 is in contact with the lower support beam 16, the opening is in a fully open or fully closed state.

[0058] An upper bushing 41 is fixedly sleeved on the central shaft 4. The upper bushing 41 is provided with a round hole that penetrates up and down. An arc-shaped groove 111 is provided on the upper central plate 11. A pin 42 is installed through the arc-shaped groove 111 and the round hole from top to bottom; the central angle of the arc-shaped groove 111 is the same as the preset angle of the relative rotation between the opening and closing assembly 3 and the outer frame assembly 1.

[0059] The central shaft 4 plays a structural support role for the outer frame assembly 1, so that the outer frame assembly 1 can rotate relative to the opening and closing assembly 3 with the axis of the central shaft 4 as the center; during the relative rotation process, the pin 42 moves relatively in the corresponding arc-shaped groove 111, playing a role in guiding the rotation and limiting the rotation angle.

[0060] Of course, during actual use, the upper bushing 41 is in contact with the lower part of the upper central plate 11. Through the setting of the upper bushing 41, the pin 42 thereon and the matching arc-shaped groove 111, the relative position of the pin 42 relative to the arc-shaped groove 111 can be used to judge the rotation angle between the outer frame assembly 1 and the opening and closing assembly 3, and the opening and closing situation of the opening; the words "open" and "close" can also be marked at both ends of the arc-shaped groove 111, so as to know and judge the opening and closing situation of the bottom opening of the outer frame assembly 1 in a more intuitive form.

[0061] The preset angle of the relative rotation of the opening and closing assembly 3 relative to the outer frame assembly 1 is 360° / 2N, where N is a positive integer, and the number of N is in one-to-one correspondence with the number of sector frames 31 in the opening and closing assembly 3 and the number of bottom openings of the outer frame assembly 1.

[0062] In actual use, considering the sand inlet and sand screening efficiency during the opening and closing process of the opening, N can be set to values such as three, four, five, etc. For exampleFigure 3 As shown in [Figure], at this time, the preset angle of rotation of the opening and closing assembly 3 relative to the outer frame assembly 1 is 45°. That is, a one-way relative rotation of 45° between the opening and closing assembly 3 and the outer frame assembly 1 realizes the opening of the opening. A reverse rotation of 45° realizes the closing of the opening.

[0063] In this embodiment, when the opening is open, it is convenient to feed sand at the opening. When the opening is closed, the sand screening operation is performed.

[0064] The mesh group 33, the sieve mesh, and the filter mesh 18 can be selected with a mesh size suitable for the actual sand screening, so that the sand can pass through, while the large particles cannot pass through and are screened out. The presence of the resistance mesh 22 is used to increase the resistance during rotation. The resistance mesh 22 can be selected with a relatively small mesh.

[0065] In actual use, the mesh group 33, the sieve mesh, and the filter mesh 18 are selected with a large mesh, such as a 5-mesh stainless steel sieve mesh; the resistance mesh 22 is selected with a small mesh, such as an 80-mesh stainless steel sieve mesh.

[0066] The online cleaning method of the floating sand bucket impurity cleaning device of this embodiment is as Figure 4 shown. The external power mechanism is the manipulator 5. The manipulator 5 clamps the top of the central shaft 4 via the end clamping mechanism 6. The bottom surface of the floating sand bucket 7 is connected and joined to the blower 8;

[0067] The online cleaning method includes the following steps:

[0068] The first step: The manipulator 5 clamps the central shaft 4, lifts the cleaning device and slowly puts it into the floating sand bucket 7. While placing it, the manipulator 5 drives the opening and closing assembly 3 to rotate in the positive direction along the central shaft 4, such as Figure 5 the counterclockwise direction shown in [Figure];

[0069] At the same time, the blower 8 works, and the air flow enters the bottom of the floating sand bucket 7, causing the sand in the floating sand bucket 7 to start to churn;

[0070] When the opening and closing assembly 3 rotates in the positive direction, the churning sand and the resistance increasing assembly 2 together cause the outer frame assembly 1 to rotate slower than the opening and closing assembly 3 in the positive direction, forming a relative rotation of the opening and closing assembly 3 relative to the outer frame assembly 1 in the positive direction, so that the mesh group 33 of the opening and closing assembly 3 gradually moves away from the opening at the bottom surface of the outer frame assembly 1 until the opening is completely opened, as Figure 5 、 Figure 6 and Figure 7 shown, which is a schematic diagram of the opening from closed to fully opened;

[0071] After the opening is completely opened, the sector frame 31 of the opening and closing assembly 3 will be limited and fitted to the side surface of the lower support beam 16 to maintain the open state of the opening, and the outer frame assembly 1 will rotate synchronously with the opening and closing assembly 3 and the central shaft 4;

[0072] Step 2: As the cleaning device moves downward relative to the floating sand bucket 7, the churning sand enters the outer frame assembly 1 through the opening until the cleaning device moves downward relative to the floating sand bucket 7 to a preset position, that is, a position where the bottom surface of the outer frame assembly 1 is at a certain height from the inner bottom surface of the floating sand bucket 7, such as 5 cm;

[0073] Step 3: The manipulator 5 drives the opening and closing assembly 3 to rotate in the opposite direction, such as Figure 7 the clockwise rotation shown in the figure, which causes a relative rotation in the opposite direction between the outer frame assembly 1 and the opening and closing assembly 3, and the opening is gradually blocked by the mesh group 33 until it is completely closed, as shown in Figure 7 , Figure 6 and Figure 5 shown, which is a schematic diagram of the opening from open to fully closed;

[0074] Step 4: The manipulator 5 drives the cleaning device to move upward relative to the floating sand bucket 7, and the sand inside the outer frame assembly 1 falls out from the side screen, the bottom filter screen 18, and the mesh group 33 into the floating sand bucket 7, and the remaining large particles are inside the outer frame assembly 1;

[0075] Of course, in actual use, during the process of the manipulator 5 driving the cleaning device to move upward, it can maintain the state of rotating in the opposite direction, so that the cleaning device in the closed state of the opening rotates in the opposite direction to assist in the sand screening action;

[0076] Step 5: The manipulator 5 drives the cleaning device to move outside the floating sand bucket 7, turns the cleaning device upside down so that the opening faces downward, and the large particles inside the outer frame assembly 1 are poured out.

[0077] As shown in Figure 4 In this embodiment, the manipulator 5 can be a robot with five or more axes. Of course, it can also be other power mechanisms that can realize rotation and lifting actions.

[0078] In actual use, during the production gap, the manipulator 5 beside the production line can drive the cleaning device into the floating sand bucket 7, open the opening while rotating and synchronously move downward, then rotate in the opposite direction to close the opening, move upward for sand screening, and pour sand operations to perform rapid on-line sand screening. Of course, according to the actual situation, the above sand screening operations can be repeated to ensure the reliability of impurity screening.

[0079] The present invention realizes the on-line cleaning of impurities in the floating sand bucket, can effectively ensure that the particulate matter in the floating sand bucket is maintained at a relatively low level, takes a short time, has high efficiency, and can especially reliably utilize the gap of the production beat, and has good practicability.

[0080] The above description is an explanation of the present invention, not a limitation of the invention. The scope defined by the present invention is referred to the claims, and any form of modification can be made within the protection scope of the present invention.

Claims

1. An online cleaning method for a cleaning device of impurities in a floating sand bucket, characterized in that: The cleaning device includes an outer frame assembly. The bottom surface of the outer frame assembly is provided with openings and filter meshes that penetrate up and down at intervals along the circumference; a switching component is equipped on the bottom surface of the outer frame assembly. Along the circumference, a group of meshes corresponding to the openings one by one are arranged at intervals. The switching component rotates relative to the bottom surface of the outer frame assembly within a preset angle. The group of meshes can overlap with the filter mesh correspondingly or the group of meshes can cover the corresponding openings; it also includes a resistance increasing component arranged inside the outer frame assembly. The resistance increasing component applies resistance to the synchronous rotation of the outer frame assembly along with the switching component; A central shaft is rotatably installed through the axial center of the outer frame assembly up and down. The central shaft is fixedly installed with the switching component. The external power mechanism clamps the top of the central shaft. The external power mechanism drives the switching component to rotate via the central shaft; the structure of the outer frame assembly is: including annular frames arranged in parallel at intervals up and down. The annular frames are supported and connected by vertical beams arranged at intervals along the circumference. A screen is surrounded between the circumferential edges of the upper and lower annular frames; upper and lower central plates are respectively arranged at the centers of the upper and lower annular frames (, the central shaft penetrates through the upper and lower central plates and is rotatably installed. Upper support beams are radially connected between the circumferential edge of the upper central plate and the upper annular frame. Lower support beams are radially connected between the circumferential edge of the lower central plate and the lower annular frame; a radial beam is also installed between the edge of the lower central plate between two adjacent lower support beams and the lower annular frame. A filter mesh is arranged between the radial beam and one of the adjacent lower support beams, and an opening is formed between the radial beam and the other adjacent lower support beam; the upper support beams are arranged corresponding to the vertical beams, and diagonal support beams are jointly installed between the ends of the upper support beams and the vertical beams that are far away from each other. A resistance mesh is laid in the triangular area formed by the upper support beam, the vertical beam and the diagonal support beam to form a resistance increasing component; a lower shaft sleeve is fixedly sleeved on the central shaft. Fan-shaped frames corresponding to the filter meshes one by one are installed at intervals along the circumference of the edge of the lower shaft sleeve. A group of meshes are laid in the fan-shaped frames; an upper shaft sleeve is fixedly sleeved on the central shaft. A circular hole penetrating up and down is opened on the upper shaft sleeve. An arc-shaped groove is opened on the upper central plate. A pin is installed through the arc-shaped groove and the circular hole from top to bottom. The central angle of the arc-shaped groove is the same as the preset angle of the relative rotation between the switching component and the outer frame assembly; The external power mechanism is a manipulator. The manipulator clamps the top of the central shaft via an end clamping mechanism. The bottom surface of the floating sand bucket is connected and communicated to a blower; The online cleaning method includes the following steps: The manipulator clamps the central shaft, lifts the cleaning device and slowly puts it into the floating sand bucket. While placing it, the manipulator drives the switching component to rotate in the positive direction via the central shaft; At the same time, the blower works, and air flow enters the bottom of the floating sand bucket, causing the sand in the floating sand bucket to start to churn; When the switching component rotates in the positive direction, the churning sand and the resistance increasing component jointly cause the rotation of the outer frame assembly along the positive direction to be slower than the rotation of the switching component, thereby forming a relative rotation of the switching component relative to the outer frame assembly in the positive direction, so that the group of meshes of the switching component gradually move away from the opening on the bottom surface of the outer frame assembly until the opening is completely opened; As the cleaning device moves downward relative to the floating sand bucket, the churning sand enters the outer frame assembly through the opening until the cleaning device moves downward relative to the floating sand bucket to a preset position; The manipulator drives the opening and closing assembly to rotate in the opposite direction, causing a relative rotation in the opposite direction between the outer frame assembly and the opening and closing assembly, and the opening is gradually blocked by the mesh group until it is completely closed; The manipulator drives the cleaning device to move upward relative to the floating sand bucket, and the sand inside the outer frame assembly falls from the side screen, the bottom filter screen, and the mesh group to the inside of the floating sand bucket, and the remaining large particles are inside the outer frame assembly; The manipulator drives the cleaning device to move outside the floating sand bucket, turns the cleaning device upside down so that the opening faces downward, and the large particles inside the outer frame assembly are poured out.

2. The online cleaning method of a cleaning device for impurities in a floating sand bucket according to claim 1, characterized in that: The cross-section of the lower annular frame is an L-shaped structure, the cross-section of the lower support beam is a "⊥" shaped structure, the fan-shaped frame moves along the inner side of the annular frame, the lower support beam and the horizontal plane of the radial beam, and limit pins are also installed on the inner side surface of the lower annular frame and the side surface of the lower support beam, and the limit pins prevent the fan-shaped frame from disengaging upward from the inner bottom surface of the outer frame assembly.

3. The online cleaning method of a cleaning device for impurities in a floating sand bucket according to claim 1, characterized in that: The preset angle of rotation of the opening and closing assembly relative to the outer frame assembly is 360° / 2N, where N is a positive integer.

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