Chain belt cleaning device and belt cleaning method

Abstract

This invention discloses a chain-type belt cleaning device and method, relating to the field of belt conveyor technology. It includes a support mechanism, a drive mechanism, a circulation mechanism, and a cleaning mechanism. The support mechanism comprises two support frames, each with two support legs and a rotating support column rotatably connected between the support legs. The output shaft of the drive mechanism is drively connected to the rotating support column. The circulation mechanism includes a chain composed of interconnected links, which wraps around the outside of the two rotating support columns. The chain moves as the rotating support columns rotate. The cleaning mechanism includes scrapers and scraper devices for fixing the scrapers, with several scraper devices fixed above several chain links. When the scraper devices are positioned above, the cleaning device can rotate to the working direction under the action of the belt; when positioned below, it can rotate to the aligning direction under the action of a baffle, facilitating cleaning of the scrapers. It can operate in a cyclical manner, has a simple structure, and is easy to maintain.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology, specifically to a chain-type belt cleaning device and belt cleaning method. Background Technology

[0002] Conveyor belts used in steel mills and other factories accumulate various types of foreign matter, such as powdery materials and granular clumps, over time. In actual production, these belts, often tens of meters long, are continuously rotating and in operation. Manual surface cleaning is commonly used, but the constant movement and rotation of the belts presents significant challenges and safety hazards.

[0003] Although there are now some automatic cleaning devices, such as roller brushes set at one end of the belt, or metal or rubber scrapers to clean the belt, after a period of use, a lot of foreign matter will accumulate on the surface of the roller brush or scraper, which needs to be removed for cleaning and maintenance, making them rather cumbersome to use. Summary of the Invention

[0004] The purpose of this invention is to provide a chain-type belt cleaning device and belt cleaning method. During use, the scraper is at a certain angle to the belt to clean the belt. Even if the belt shakes, the scraper can always stick to the belt surface, and after leaving the belt surface, it can be straightened for cleaning of the scraper itself. The device can run in cycles, has a simple structure, and is easy to maintain.

[0005] To achieve the above objectives, the present invention provides a technical solution: a chain belt cleaning device, comprising: a support mechanism, a drive mechanism, a circulation mechanism, and a cleaning mechanism, wherein:

[0006] The support mechanism is divided into two parts, namely a support frame located at the head and tail. The support frame includes two support legs on the left and right and a support rotating column rotatably connected between the two support legs.

[0007] The drive mechanism is located near the head support frame, and the output shaft of the drive mechanism is connected to the support rotating column of the head support frame.

[0008] The circulation mechanism includes a chain composed of interconnected links. The supporting rotating column is provided with gear teeth adapted to the circulation mechanism. The chain is wrapped around the outside of the two supporting rotating columns and moves as the supporting rotating columns rotate.

[0009] The cleaning mechanism includes a scraper and a scraper device for fixing the scraper. Several scraper devices are fixed above several chain links. The scraper device includes a rotating main shaft, a rotating head fixedly connected to the lower part of the rotating main shaft, a base and a telescopic spring sleeved from bottom to top outside the rotating main shaft and capable of rotating relative to the rotating main shaft, and a scraper frame for mounting the scraper located on the upper part of the rotating main shaft. The top edge of the rotating head is provided with an upwardly protruding swing block. A limit groove is opened on the outer side wall of the base. The lower end of the limit groove extends to the lower surface of the base. One end of the swing block is slidably inserted into the limit groove. One end of the telescopic spring contacts the upper surface of the base and the other end contacts the lower surface of the scraper frame. When the rotating head rotates, the rotating main shaft can also rotate, thereby driving the scraper frame to rotate.

[0010] When the rotating head is above the circulation mechanism and begins to contact the belt, the scraper is in the working direction; when the rotating head is below the circulation mechanism, the scraper is in the aligning direction.

[0011] Preferably, the surface of the supporting rotating column is provided with a baffle, the rotating head is an eccentric wheel structure, and one end of the major diameter of the rotating head is located in the downstream direction of the chain drive. When the scraper swings to the straightening direction, one side of the extended surface of the baffle is tangent to the minor diameter of the rotating head.

[0012] Preferably, the rotating head is a hollow cylinder with one open end, and a through hole at the bottom for the rotating spindle to pass through. The swing block is located at the open end of the rotating head. The rotating head also includes a transmission mechanism to achieve rotation relative to the base. The transmission mechanism includes:

[0013] The positioning component is fixedly connected to the bottom of the adjacent component above the rotating head, and includes a positioning cylinder located outside the rotating spindle and concentric with it, and a positioning plate located outside the positioning cylinder.

[0014] A cylindrical protrusion is provided on the inner sidewall of the swing block;

[0015] A bevel gear transmission mechanism, in which a first bevel gear and a second bevel gear are perpendicularly connected and transmitted to each other, is located outside the positioning cylinder;

[0016] The connecting rod has one end fixedly connected to the first bevel gear, and the other end is provided with a long strip-shaped through hole groove, which is sleeved on the cylindrical protrusion, and the cylindrical protrusion can slide along the long strip direction of the through hole groove.

[0017] A cylindrical gear is fixedly mounted on the back of the second bevel gear;

[0018] The rack drives the cylindrical gear, with its long side parallel to the axis of rotation of the main shaft. The back of the rack contacts the positioning plate and can slide relative to it.

[0019] More preferably, the working direction of the swing block is 45°.

[0020] Preferably, a bearing sleeve is provided between the base and the rotating spindle. The bearing sleeve is a flange linear bearing sleeve, including an upper linear bearing sleeve and a lower flange. The flange is located between the base and the rotating head. The inner ring of the bearing sleeve is tightly fitted outside the rotating spindle. The base and the outer ring of the bearing sleeve are fixedly connected by the flange. A slot is provided on the flange at a position corresponding to the limiting groove of the base, penetrating the upper and lower surfaces of the flange. The projection dimensions of the limiting groove and the slot in the direction of the lower surface of the base are the same.

[0021] More preferably, the upper surface of the base is stepped, the lower step (relatively lower step) is located inside the base, and the lower part of the telescopic spring contacts the surface of the lower step and is sleeved on the outside of the linear bearing sleeve.

[0022] Preferably, the upper part of the base and the telescopic spring is covered with a dust cover concentric with the rotating main shaft, including a dust cover and a dust cover sidewall. The dust cover has a through hole in the center. A sealing ring is provided between the dust cover and the base. The upper part of the telescopic spring contacts the inner wall of the dust cover. A groove is opened on the upper part of the outer wall of the base, and the sealing ring is provided in the groove.

[0023] Preferably, the scraper device is fixed symmetrically on both sides of the chain link, and a connecting member is fixed above the chain link. The connecting member includes upright plates located on the left and right sides of the chain link and a top plate located above the chain link and connected to the two upright plates as a whole. Connection holes are opened at corresponding positions on the top plate and the chain link. The upright plates and the base sidewall are fixedly connected together by a support arm.

[0024] Preferably, a plurality of top wheels with their top surfaces higher than the supporting rotating columns are provided at rotatable intervals between the two supporting rotating columns. The top wheels are supported on the inner surface of the chain, and the plurality of top wheels are at the same height.

[0025] The present invention also provides a technical solution, a belt cleaning method using the above-mentioned chain-type belt cleaning device, specifically including:

[0026] S1. The belt to be cleaned is a recirculating conveyor belt, and the cleaning device is a recirculating device located below the belt. The cleaning device is equipped with several scrapers, and the transmission direction of the scrapers is perpendicular to the transmission direction of the belt.

[0027] S2. Several scrapers abut against the lower surface of the belt located below the drive belt, and the scrapers are located in the working direction, 90° > working direction > 0°;

[0028] S3. Start the control or drive mechanism of the belt and the scraper respectively, so that the belt and the scraper start to circulate;

[0029] S4. After each scraper moves out from under the belt, when it rotates to the area under the cleaning device, the scraper changes from the working direction to the straightening direction.

[0030] S5. After each scraper rotates from below to above the cleaning device, when it comes into contact with the belt again, the scraper changes from the upright direction to the working direction.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] This chain-type belt cleaning device, through the setting of the telescopic spring, enables the scraper to always keep in close contact with the belt surface for cleaning foreign objects during actual working conditions. At the same time, the design of the inclined slope of the scraper allows the belt to move smoothly above the scraper when the scraper contacts the belt.

[0033] This chain-belt cleaning device protects itself by using a dust cover, preventing foreign objects from falling into the cleaning mechanism and affecting its normal operation.

[0034] This chain-type belt cleaning device uses a chain to drive the cleaning mechanism in a cycle, enabling the cleaning device to clean the running belt without stopping the belt;

[0035] This chain-type belt cleaning device, through the arrangement of the cleaning mechanism and the baffle, achieves the cleaning of the belt by having the scraper in the working direction when the cleaning mechanism is in contact with the belt. When the cleaning mechanism rotates to another direction after passing the baffle, the cleaning mechanism changes to the upright position under the action of the baffle. That is, the baffle below the chain-type belt cleaning device is in the upright position, which facilitates the setting of other cleaning mechanisms to clean the scraper. This avoids the downtime maintenance of the cleaning device, enables the belt cleaning work for a long time, and saves maintenance time and labor costs.

[0036] This chain-type belt cleaning device improves the internal structure of the rotating head and uses a transmission mechanism to make the scraper swing at a certain angle under the action of gravity when the rotating head is facing up or down, thus realizing the conversion of the scraper in the working direction and the straightening direction. Attached Figure Description

[0037] Figure 1 This is a three-dimensional schematic diagram of the chain belt cleaning device of the present invention;

[0038] Figure 2 This is a side view of the chain belt cleaning device of the present invention;

[0039] Figure 3 This is an exploded perspective view of a single cleaning mechanism in this invention;

[0040] Figure 4 This is a schematic diagram of the chain link, connector, support arm, and cleaning mechanism in this invention, wherein... Figure 4 (a) is a top view. Figure 4 (b) is Figure 4 (a) Partial longitudinal section view;

[0041] Figure 5 This is a schematic diagram illustrating the usage of the chain-type belt cleaning device of the present invention;

[0042] Figure 6 This is a schematic diagram of the cleaning mechanism in the upright position in this invention;

[0043] Figure 7 This is a schematic diagram of the cleaning mechanism in the working direction in this invention;

[0044] Figure 8 This is a schematic diagram illustrating the working principle of the cleaning mechanism and baffle during use of the present invention;

[0045] Figure 9 This is a top view of another embodiment of the rotating head in this invention;

[0046] Figure 10 This is a perspective view of another embodiment of the rotating head in this invention, viewed from above the side of the swing block.

[0047] Figure 11 This is a perspective view of another embodiment of the rotating head in this invention, viewed from above and on the opposite side of the swing block.

[0048] In the diagram: 1. Support foot; 2. Support rotating column; 21. Gear tooth; 22. Baffle; 3. Drive mechanism; 4. Chain link; 5. Scraper device; 51. Rotating spindle; 52. Rotating head; 521. Swing block; 5211. Cylindrical protrusion; 522. First bevel gear; 523. Second bevel gear; 524. Connecting rod; 5241. Through-hole groove; 525. Cylindrical gear; 526. Rack; 53. Base; 531. Limiting groove; 532. Lower step; 533. Groove; 534. Concave hole; 54. Telescopic spring 55. Spring; 551. Scraper frame; 552. Clamping plate; 553. Base plate; 56. Linear bearing sleeve; 561. Flange; 5611. Groove; 57. Dust cover; 571. Through hole; 58. Sealing ring; 6. Connecting parts; 61. Vertical plate; 62. Top plate; 7. Support arm; 8. Connecting hole; 9. Top wheel; 10. Belt; 11. Scraper; 12. Threaded surface; 121. Limiting washer; 122. Nut; 13. Fastener; 14. Positioning parts; 141. Positioning cylinder; 1411. Support parts; 142. Positioning plate. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that in the description of this invention, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. The terms "first," "second," and similar words used in the description of this invention do not indicate any order, quantity, or importance, but are only used to distinguish different components, and therefore should not be construed as limiting this invention.

[0051] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0053] like Figures 1 to 4 As shown, the present invention provides a technical solution: a chain belt cleaning device, comprising: a support mechanism, a drive mechanism 3, a circulation mechanism, and a cleaning mechanism, wherein:

[0054] The support mechanism is divided into two parts: a support frame located at the head and a support frame at the tail. The support frame includes two left and right support legs 1 and a support rotating column 2 rotatably connected between the two support legs 1.

[0055] The drive mechanism 3 is located near the head support frame, and the output shaft of the drive mechanism 3 is connected to the support rotating column 2 of the support frame to drive the support rotating column 2 to rotate.

[0056] The circulation mechanism includes a chain composed of interconnected links 4. The corresponding supporting rotating column 2 is provided with gear teeth 21 adapted to the circulation mechanism. The chain is wrapped around the outside of the two supporting rotating columns 2 and moves as the supporting rotating columns 2 rotate.

[0057] The cleaning mechanism includes a scraper 11 and scraper devices 5 for fixing the scraper 11. Several scraper devices 5 are fixed above several chain links 4. The scraper device 5 includes a rotating main shaft 51, a rotating head 52 fixedly connected to the lower part of the rotating main shaft 51, a base 53 located above the rotating head 52 and sleeved from bottom to top outside the rotating main shaft 51 and capable of rotating relative to the rotating main shaft 51, a telescopic spring 54, and a scraper frame 55 located fixedly connected to the upper part of the rotating main shaft 51 for mounting the scraper 11. The rotating head 52 has an upwardly protruding swing block 521 at its top edge. The outer wall of the base 53 has a limiting groove 531. The lower end of the limiting groove 531 extends to the lower surface of the base 53. One end of the swing block 521 is slidably inserted into the limiting groove 531. One end of the telescopic spring 54 contacts the upper surface of the base 53, and the other end contacts the lower surface of the scraper frame 55. When the rotating head 52 rotates, the rotating main shaft 51 can also rotate, thereby driving the scraper frame 55 to rotate.

[0058] like Figure 5As shown, during use, firstly, the chain-type cleaning device is located below the belt 10, with the chain's transmission direction perpendicular to the belt 10's transmission direction. When the drive mechanism 3 is turned on, the supporting rotating column 2 rotates accordingly, and the chain begins to circulate. Subsequently, the scraper frame 55, on which the scraper 11 is installed, begins to move below the belt 10, with the upper scraping surface of the scraper 11 adhering to the lower surface of the belt 10. At this time, the telescopic spring 54 is in a compressed state. Since the belt 10 may vibrate during operation, the telescopic spring 54, with its certain elastic space, ensures that the scraper 11 always contacts the belt 10 to perform the belt 10 cleaning action. Secondly, during the movement of the belt 10, the friction generated when the scraper 11 contacts the belt 10 causes the scraper 11 to rotate at a certain angle to the belt 10's transmission direction, i.e., the swing block 521 abuts against one side of the limiting groove 531.

[0059] In this embodiment, the two clamping plates 551 and the base plate 552 of the scraper frame 55 are an integral structure, and the scraper frame 55 and the rotating spindle 51 are an integral structure.

[0060] It should be noted that the swing angle is defined as the maximum angle at which the swing block 521 can rotate around the center line of the rotating main shaft 51. It can be seen that by setting the dimensions of the limiting groove 531 and the swing block 521, the swing angle of the swing block 521 can be changed. In this device, when the swing angle is 0°, the scraper 11 is perpendicular to the transmission direction of the belt 10. At this time, although the scraper 11 has the highest cleaning effect on the belt, the end of the scraper 11 causes greater damage to the surface of the belt 10. Correspondingly, when the swing angle is 90°, that is, when the scraper 11 is parallel to the transmission direction of the belt 10, this can be the maximum limit of the swing angle. At this time, the scraper 11 has a lower cleaning effect on the belt. Therefore, the range of the swing angle is: 0° < swing angle < 90°.

[0061] It should be noted that the orientation and working direction of the scraper are defined as follows: the orientation direction is when the swing angle of the scraper 11 is 0°, that is, the direction in which the scraper 11 and the transmission direction of the belt 10 are perpendicular; the working direction is the angle between the transmission directions of the scraper 11 and the belt 10 when the scraper 11 is in contact with the belt, that is, the difference between 90° and the swing angle, that is, the range of the working direction is 90° > working direction > 0°.

[0062] In this embodiment, the swing angle of the swing block 521 is 45°. One possible scenario is... Figure 6 As shown, when the swing block 521 abuts against one side of the limiting groove 531, the direction of the scraper 11 is perpendicular to the transmission direction of the belt 10. This angle is the swinging direction of the scraper 11. Another situation is, as Figure 7As shown, when the swing block 521 abuts against the other side of the limiting groove 531, the angle between the direction of the scraper 11 and the transmission direction of the belt 10 is 45°, which is the working direction of the scraper 11.

[0063] Furthermore, due to the setting of the telescopic spring 54, when the scraper 11 is driven from below to above and enters under the belt 10, the telescopic spring 54 is in a free state, and the top surface of the scraper 11 is slightly higher than the belt 10. Therefore, the top end of the scraper 11 is provided with a chamfer or rounded corner of the inclined slope, which is conducive to the scraper 11 smoothly entering under the belt 10 without damaging the belt 10.

[0064] Furthermore, the top and bottom of the scraper 11 are also provided with rounded corners. When the scraper 11 leaves the bottom of the belt 10, the belt 10 and the scraper 11 separate smoothly, avoiding the vibration of the belt 10 caused by sudden separation.

[0065] Furthermore, such as Figure 8 As shown, in order to clean the foreign objects on the scraper 11 when it moves with the chain to the bottom of the cleaning device, a baffle 22 is provided on the surface of the supporting rotating column 2. The rotating head 52 is an eccentric wheel structure. In this embodiment, an eccentric elliptical wheel is selected. One end of the major axis of the rotating head 52 is located in the downstream direction of the chain drive. When the scraper 11 swings to the upright direction, one side of the extended surface of the baffle 22 is tangent to the minor axis of the rotating head 52. Thus, when the scraper leaves the surface of the belt 10 and begins to move downwards towards the belt 10 cleaning device, the scraper 11 is in the working direction and forms a certain angle with the baffle 22. At this time, when the rotating head 52 moves to the vicinity of the baffle 22, it also forms a certain angle with the baffle 22. When the rotating head 52 contacts the baffle 22, the baffle 22 abuts against the surface of the rotating head 52 and pushes the rotating head 52 to rotate to the upright position. In this way, under the transmission of the chain, the cleaning mechanism can smoothly pass through the baffle 22, and after passing through the baffle 22, the scraper 11 changes from the working position direction to the upright direction, which facilitates cleaning the scraper 11 under the belt 10 cleaning device.

[0066] Furthermore, a bearing sleeve is provided between the base 53 and the rotating spindle 51.

[0067] Specifically, the bearing sleeve is a flanged linear bearing sleeve, including an upper linear bearing sleeve 56 and a lower flange 561. The flange 561 is located between the base 53 and the rotating head 52. The inner ring of the bearing sleeve is tightly fitted onto the outside of the rotating spindle 51. The base 53 and the outer ring of the linear bearing sleeve 56 are fixedly connected by the flange 561. At the same time, a slot 5611 is provided on the flange 561 at a position corresponding to the limiting groove 531 of the base 53, penetrating the upper and lower surfaces of the flange 561. The projection dimensions of the limiting groove 531 and the slot 5611 in the direction of the lower surface of the base 53 are the same. In this embodiment, the flange 561 and the bottom surface of the base 53 are provided with several corresponding connecting holes 8, and fasteners 13 such as screws and pins are used to connect them together during assembly.

[0068] Furthermore, the upper surface of the base 53 is stepped, and the lower step 532 (relatively lower step) is located inside the base 53. In this way, the lower part of the telescopic spring 54 can extend downward into the interior of the base 53 and contact the surface of the lower step 532, and be sleeved on the outside of the linear bearing sleeve 56.

[0069] Furthermore, the upper part of the base 53 and the telescopic spring 54 is covered with a dust cover 57 concentric with the rotating spindle 51, including a dust cover top and a dust cover side wall. The dust cover top has a through hole 571 in the center for fitting the dust cover 57 onto the rotating spindle 51. A sealing ring 58 is provided between the dust cover side wall and the base 53, so that the upper part of the telescopic spring 54 contacts the inner wall of the dust cover top.

[0070] Specifically, a groove 533 is provided on the upper part of the outer side wall of the base 53. The groove 533 contains a sealing ring 58 for sealing between the dust cover 57 and the base 53. Thus, when the scraper 11 moves up and down under the combined force of the belt 10 and the telescopic spring 54, the dust cover 57 also moves up and down accordingly, and the sealing ring 58 is always kept in the groove 533.

[0071] In this embodiment, the lower part of the rotating spindle 51 extending out of the rotating head 52 is a threaded surface 12. The rotating spindle 51 and the rotating head 52 are connected by a key, and the threaded surface 12 is fixed to the rotating head 52 by a limiting washer 121 and a nut 122.

[0072] Furthermore, the scraper frame 55 consists of two parallel clamping plates 551 and a base plate 552 connected to the bottom of the two clamping plates 551. The bottom surface of the scraper frame 55 is fixedly connected to the top of the rotating spindle 51, and the middle of the two clamping plates 551 can be used to clamp the scraper 11.

[0073] Specifically, in this embodiment, connecting holes 8 are provided at corresponding positions on the two clamping plates 551 and the scraper 11 located between the two clamping plates 551, so that when the scraper 11 is placed inside the two clamping plates 551, the scraper 11 is fastened to the scraper frame 55 by fasteners 13.

[0074] Furthermore, the scraper device 5 is fixed symmetrically on both sides of the chain link 4.

[0075] Specifically, a connecting member 6 is fixed above the link 4. The connecting member 6 includes upright plates 61 located on the left and right sides of the link 4 and a top plate 62 located above the link 4 and connected to the two upright plates 61 as a whole. Connecting holes 8 are opened at corresponding positions on the top plate 62 and the link 4 for fasteners 13 to fix the connecting member 6 and the link 4 together. The upright plates 61 and the side wall of the base 53 are fixedly connected together by support arms 7.

[0076] In this embodiment, the part of the support arm 7 that passes through the vertical plate 61 and extends out is the threaded surface 12. The support arm 7 and the vertical plate 61 are connected by a key, and the threaded surface 12 is blocked and restricted by the limiting washer 121 and the nut 122 to prevent the key from falling off.

[0077] In this embodiment, a recessed hole 534 is provided on the side wall of the base 53, and one end of the support arm 7 extends into the recessed hole 534 for fixed connection.

[0078] In actual implementation, the size and number of baffles 22 can be changed according to the width of belt 10. For example, a cleaning mechanism with support arm 7 can be connected to the side wall of the base 53 connected to the support arm 7.

[0079] Furthermore, several top wheels 9 with their top surfaces higher than the supporting rotating columns 2 are provided at rotatable intervals between the two supporting rotating columns 2. The top wheels 9 are used to support the inner surface of the chain, and the height of the top wheels 9 is consistent.

[0080] Furthermore, the height of the top wheel 9 is adjustable.

[0081] Furthermore, support leg 1 has a height-adjustable structure.

[0082] Furthermore, the drive mechanism 3 is a common rotary shaft drive mechanism 3.

[0083] The rotating head 52 provided in the above embodiments is in a working direction when it is subjected to force in contact with the conveyor belt, and in a straightening direction under the action of the baffle 22. Another embodiment of the rotating head 52 is described below, in which the rotating head 52 automatically assumes a working direction when rotating upwards and automatically assumes a straightening direction when rotating downwards, such as... Figures 9 to 11 The details are as follows:

[0084] The rotating head 52 is a hollow cylinder with one end open. The bottom is provided with a through hole for the rotating spindle 51 to pass through. The rotating head 52 is fixedly connected to the rotating spindle 51. At this time, the rotating head 52 can be a cylinder, a square column, or an eccentric column.

[0085] The swing block 521 is located at one end of the opening of the rotating head 52;

[0086] The rotating head 52 rotates relative to the base 53 via a transmission mechanism.

[0087] The transmission mechanism is located inside the hollow cavity of the rotating head 52, and its specific structure includes:

[0088] The positioning component 14 is fixedly connected to the bottom of the component (base 53 or bearing sleeve) on the upper part of the rotating head 52. It includes a positioning cylinder 141 located outside the rotating spindle 51 and a positioning plate 142 located outside the positioning cylinder 141. The positioning cylinder 141 is concentrically arranged with the rotating spindle 51, and the positioning component 14 extends into the hollow cavity of the rotating head 52.

[0089] A cylindrical protrusion 5211 is provided on the inner side wall of the swing block 521;

[0090] The bevel gear transmission mechanism consists of two bevel gears that are perpendicularly connected and driven by each other, and is located outside the positioning cylinder 141.

[0091] The connecting rod 524 is fixedly connected at one end to the first bevel gear 522 (one of the two bevel gears), that is, when the first bevel gear 522 rotates, the connecting rod 524 rotates in the same direction as the first bevel gear 522. The other end is provided with a long strip-shaped through-hole groove 5241 that is aligned with the axis of rotation of the main shaft 51, which is sleeved on the cylindrical protrusion 5211, and the cylindrical protrusion 5211 can slide along the long strip direction of the through-hole groove 5241.

[0092] The cylindrical gear 525 is located on the back of the second bevel gear 523 (one of the two bevel gears). The two can be fixedly connected or be an integral structure, that is, when the cylindrical gear 525 rotates, the second bevel gear 523 also rotates.

[0093] The rack 526 and the cylindrical gear 525 drive each other. The long side of the rack 526 is parallel to the axis of rotation of the main shaft 51. The back of the rack 526 is in contact with the positioning plate 142 and can slide relative to it.

[0094] Thus, during use, when the rotating head 52 cycles from top to bottom, i.e., when the swing block 521 is facing downwards, due to gravity, the rack 526 moves from a position near the bottom of the rotating head 52 to a position away from the bottom of the rotating head 52, thereby driving the cylindrical gear 525 to rotate. At the same time, the second bevel gear 523 rotates, transmitting power to the first bevel gear 522, causing the connecting rod 524 to rotate in the same direction as the first bevel gear 522. Consequently, the cylindrical protrusion 5211 moves along the through-hole groove 5241 and rotates around the center line of the rotating main shaft 51. Driven by the cylindrical protrusion 5211, 521 and the rotating head 52 also rotate. At the same time, the rotating main shaft 51, which is fixedly connected to the rotating head 52, also rotates, causing the scraper 11 to change direction to the aligning direction. Similarly, when the rotating head 52 circulates from the bottom to the top, that is, when the swing block 521 is facing down, due to gravity, the rack 526 moves from a position away from the bottom of the rotating head 52 to a position near the bottom of the rotating head 52, thereby driving the movement of the transmission mechanism, causing the swing block 521 to rotate, and thus causing the scraper 11 to change direction to the working direction.

[0095] When the rotating head 52 is at the top, that is, when the swing block 521 is facing upward, due to gravity, the rack 526 is located near the bottom of the rotating head 52, and the swing block 521 is in the working position.

[0096] Furthermore, two vertical cylindrical support members 1411 are fixedly connected to the outside of the positioning cylinder 141. Each of the two support members 1411 passes through a corresponding bevel gear for rotational connection, so that the bevel gear can rotate around the corresponding support member 1411.

[0097] Furthermore, the positioning plate 142 is provided with a slide rail for the back of the rack 526 to slide on the slide rail.

[0098] Furthermore, a counterweight is provided at the top or bottom of the rack 526, which is more conducive to the power of the rack 526 moving along the positioning plate 142 when the rotating head 52 reverses.

[0099] Furthermore, the base 53, bearing sleeve, and rotating head 52 are provided with sealed protective shells to prevent impurities from entering the device during the cleaning process and affecting the normal operation of the device.

[0100] It should be noted that the transmission ratio between the rack 526 and the cylindrical gear 525, and the transmission ratio between the second bevel gear 523 and the first bevel gear 522, together determine the swing angle range of the swing block 521. The swing angle is between 0 and 90°, and preferably, the swing angle is 45°.

[0101] Furthermore, the top edge of the scraper 11 is provided with a chamfered or rounded corner of an inclined slope, so that when the scraper 11 comes into contact with the belt 10, the edge of the belt 10 gradually brushes against the top surface of the scraper 11 along the inclined slope, avoiding damage to the belt 10 caused by sharp edges.

[0102] Furthermore, the other side of the top of the scraper 11 is provided with a chamfered slope or a rounded corner, so that the belt 10 will not shake significantly when the scraper 11 is separated from the belt 10.

[0103] It should be noted that under the action of the telescopic spring 54, the scraper frame 55 and the rotating main shaft 51 connected to the scraper frame 55 will move up and down, and the rotating head 52 fixedly connected to the rotating main shaft 51 will also move up and down accordingly. Of course, if it is not desired for the rotating head 52 to move up and down in actual implementation, a support column can be provided under the scraper frame 55. The support column is inserted into the rotating main shaft 51, and a slide rail in the same direction as the center line of the rotating main shaft 51 is provided between the support column and the rotating main shaft 51, so that the support column cannot rotate with the rotating main shaft 51, but can move relative to the rotating main shaft 51 in the up and down direction.

[0104] According to the chain-type belt cleaning device provided above, a belt cleaning method is provided, specifically including:

[0105] S1. The belt 10 to be cleaned is a recirculating conveyor belt. The cleaning device is equipped with several scrapers 11, which are recirculating devices. The cleaning device is located below the belt.

[0106] S2. Several scrapers 11 abut against the lower surface of the belt 10 located below the drive belt, and the scrapers 11 are located in the working direction, 90° > working direction > 0°;

[0107] S3. Start the control or drive mechanism of belt 10 and scraper 11 respectively, so that belt 10 and scraper 11 start cyclic transmission respectively.

[0108] S4. After each scraper 11 moves out from under the belt 10, when it rotates to the underside of the cleaning device, the scraper 11 changes from the working direction to the straightening direction.

[0109] S5. After each scraper 11 rotates from below to above the cleaning device, when it comes into contact with the belt 10 again, the scraper 11 changes from the upright direction to the working direction.

[0110] Furthermore, the drive direction of the scraper 11 on the cleaning device is perpendicular to the drive direction of the belt 10.

[0111] Furthermore, the working direction is 45°.

[0112] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chain-type belt cleaning device, comprising: The support mechanism, drive mechanism, circulation mechanism, and cleaning mechanism are characterized by: The support mechanism is divided into two parts, namely a support frame located at the head and tail. The support frame includes two support legs on the left and right and a support rotating column rotatably connected between the two support legs. The drive mechanism is located near the head support frame, and the output shaft of the drive mechanism is connected to the support rotating column of the head support frame. The circulation mechanism includes a chain composed of interconnected links. The supporting rotating column is provided with gear teeth adapted to the circulation mechanism. The chain is wrapped around the outside of the two supporting rotating columns and moves as the supporting rotating columns rotate. The cleaning mechanism includes a scraper and a scraper device for fixing the scraper. Several scraper devices are fixed above several chain links. The scraper device includes a rotating main shaft, a rotating head fixedly connected to the lower part of the rotating main shaft, a base and a telescopic spring sleeved from bottom to top outside the rotating main shaft and capable of rotating relative to the rotating main shaft, and a scraper frame for mounting the scraper located on the upper part of the rotating main shaft. The top edge of the rotating head is provided with an upwardly protruding swing block. A limit groove is opened on the outer side wall of the base. The lower end of the limit groove extends to the lower surface of the base. One end of the swing block is slidably inserted into the limit groove. One end of the telescopic spring contacts the upper surface of the base and the other end contacts the lower surface of the scraper frame. When the rotating head rotates, the rotating main shaft can also rotate, thereby driving the scraper frame to rotate. When the rotating head is above the circulation mechanism and begins to contact the belt, the scraper is in the working direction; when the rotating head is below the circulation mechanism, the scraper is in the aligning direction. The rotating head is a hollow cylinder with one open end, and a through hole at the bottom for the rotating spindle to pass through. The swing block is located at the open end of the rotating head. The rotating head also includes a transmission mechanism to achieve rotation relative to the base. The transmission mechanism includes: The positioning component is fixedly connected to the bottom of the component adjacent to the top of the rotating head, and includes a positioning cylinder located outside the base and the rotating main shaft and concentric with it, and a positioning plate located outside the positioning cylinder. A cylindrical protrusion is provided on the inner sidewall of the swing block; A bevel gear transmission mechanism, in which a first bevel gear and a second bevel gear are perpendicularly connected and transmitted to each other, is located outside the positioning cylinder; The connecting rod has one end fixedly connected to the first bevel gear, and the other end is provided with a long strip-shaped through hole groove, which is sleeved on the cylindrical protrusion, and the cylindrical protrusion can slide along the long strip direction of the through hole groove. A cylindrical gear is fixedly mounted on the back of the second bevel gear; The rack drives the cylindrical gear, with its long side parallel to the axis of rotation of the main shaft. The back of the rack contacts the positioning plate and can slide relative to it.

2. The chain belt cleaning device according to claim 1, characterized in that: The surface of the supporting rotating column is provided with a baffle, and the rotating head is an eccentric wheel structure. One end of the major diameter of the rotating head is located in the downstream direction of the chain drive. When the scraper swings to the alignment direction, one side of the extended surface of the baffle is tangent to the minor diameter of the rotating head.

3. The chain belt cleaning device according to claim 1, characterized in that: The working direction of the swing block is 45°.

4. The chain-type belt cleaning device according to claim 1, characterized in that: A bearing sleeve is provided between the base and the rotating spindle. The bearing sleeve is a flange linear bearing sleeve, including an upper linear bearing sleeve and a lower flange. The flange is located between the base and the rotating head. The inner ring of the bearing sleeve is tightly fitted outside the rotating spindle, and the base and the outer ring of the bearing sleeve are fixedly connected by the flange. A slot is provided on the flange at a position corresponding to the limiting groove of the base, penetrating the upper and lower surfaces of the flange. The projection dimensions of the limiting groove and the slot in the direction of the lower surface of the base are the same.

5. The chain belt cleaning device according to claim 4, characterized in that: The upper surface of the base is stepped, and the lower step is located inside the base. The lower part of the telescopic spring contacts the surface of the lower step and is sleeved on the outside of the linear bearing sleeve.

6. The chain belt cleaning device according to claim 1, characterized in that: The base and the upper part of the telescopic spring are covered with a dust cover concentric with the rotating main shaft, including a dust cover and a dust cover sidewall. The dust cover has a through hole in the center. A sealing ring is provided between the dust cover sidewall and the base. The upper part of the telescopic spring contacts the inner wall of the dust cover. A groove is opened on the upper part of the outer wall of the base, and the groove contains the sealing ring.

7. The chain belt cleaning device according to claim 1, characterized in that: The connecting member above the chain link includes upright plates on the left and right sides of the chain link and a top plate on the top of the chain link that is integrally connected to the two upright plates. The top plate and the chain link have corresponding connection holes. The upright plates and the base sidewall are fixedly connected together by a support arm.

8. The chain belt cleaning device according to claim 1, characterized in that: A plurality of top wheels with their top surfaces higher than the two supporting rotating columns are provided at rotatable intervals between them. The top wheels are supported on the inner surface of the chain, and the height of the plurality of top wheels is the same.

9. A belt cleaning method using the chain-type belt cleaning device according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1. The belt (10) to be cleaned is a reusable conveyor belt, and the cleaning device is a reusable device located below the belt (10). The cleaning device is provided with several scrapers (11), and the transmission direction of the scrapers (11) is perpendicular to the transmission direction of the belt (10). S2. Several scrapers (11) abut against the lower surface of the belt (10) which is driven downward, and the scrapers (11) are in the working direction, 90° > working direction > 0°; S3. Start the control or drive mechanism of the belt (10) and the scraper (11) respectively, so that the belt (10) and the scraper (11) start to cycle and drive respectively. S4. After each scraper (11) moves out from under the belt (10) and rotates to under the cleaning device, the scraper (11) changes from the working direction to the straightening direction. S5. After each scraper (11) rotates from below to above the cleaning device, when it comes into contact with the belt (10) again, the scraper (11) changes from the upright direction to the working direction.

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