Floating scraper and belt cleaning device

Abstract

The utility model provides a floating scraper which comprises a scraper body, a scraper rest, a swing arm and a torsion elastic assembly, and the scraper rest is hinged to the scraper body through a pin shaft. The front end of the swing arm is fixedly connected with the tool rest, the rear end of the swing arm is rotationally connected with the torsion elastic assembly, and the torsion elastic assembly is used for providing reverse torque to force the swing arm to return. The scraper rest is connected with the torsion elastic assembly through the swing arm, so that the whole scraper can float up and down, the swing arm is matched with the torsion elastic assembly to achieve a certain vibration reduction effect, damage of the scraper to the surface of a belt is reduced, and therefore the service life of the belt is prolonged. Meanwhile, the scraper is rotationally connected with the scraper rest through the pin shaft, the scraper can automatically adapt to pits in the surface of the belt to float left and right when attached to the belt, the whole scraper is pressed on the surface of the belt under the action of the swing arm and the torsion elastic assembly all the time, automatic return of the left end and the right end of the scraper can be achieved, and the belt cleaning effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of belt cleaning, and in particular to a floating scraper and a belt cleaning device. Background Art

[0002] During the transportation of bulk materials by belt conveyors, there will be material stuck on the return belt surface of the belt conveyor, referred to as return material. The return material first affects the life of the redirection roller, causing the roller surface to wear faster. If the return material sticks to the surface of the roller, the more it sticks, the conveyor belt will deviate, increase the wear of the conveyor belt, and cause serious consequences. The return material will also stick to the lower roller of the empty section, which will accelerate the wear of the conveyor belt. The material will also enter the roller shell, thereby increasing the radial load and axial load on the bearing seat and causing the bearing to wear quickly. In addition, the roller shell stuck with the material will interact with the belt after it dries, which will cause dust. The return material stuck to the belt will also cause dust when it shakes when passing each roller. Therefore, belt cleaning is becoming an increasingly indispensable part of the belt conveyor system, and the requirements for belt cleaning are getting higher and higher.

[0003] Ordinary belt cleaners use polyurethane scrapers, alloy scrapers or ceramic scrapers to scrape off materials adhered to the belt surface. However, since the scrapers are generally hard and need to be close to the belt to achieve a better cleaning effect, if the scraper's shock absorption effect is not good, it is easy to damage the belt, thereby shortening the service life of the belt. Summary of the invention

[0004] The present application provides a floating scraper and a belt cleaning device, which solves the problem that the scraper of the existing belt cleaner easily damages the belt.

[0005] The first aspect of the present application provides a floating scraper, including a scraper, a tool holder, a swing arm and a torsion elastic component, wherein the tool holder and the scraper are hinged via a pin; the front end of the swing arm is fixedly connected to the tool holder, and the rear end is rotatably connected to the torsion elastic component, and the torsion elastic component is used to provide a reverse torque to force the swing arm to return to its position.

[0006] In the technical solution provided by the present application, the blade holder is connected to the torsion elastic component through a swing arm, so that the scraper as a whole can float up and down. The swing arm and the torsion elastic component can play a certain vibration reduction role, reduce the damage caused by the scraper to the belt surface, and thus extend the service life of the belt. At the same time, the scraper is rotatably connected to the blade holder through a pin shaft, so that when the scraper fits the belt, it can automatically adapt to the pits on the belt surface and float left and right. Since the scraper as a whole is always pressed against the belt surface by the swing arm and the torsion elastic component, the scraper can automatically return to its left and right ends to improve the cleaning effect of the belt.

[0007] In some embodiments, two swing arms are provided, the front ends of the two swing arms are respectively connected to the two ends of the tool holder, and the rear ends of the two swing arms are respectively rotatably connected to the two ends of the torsion elastic component; by providing two swing arms, the structural stability of the floating scraper is improved, making the scraper as a whole floating up and down and the floating up and down of the left and right ends more stable.

[0008] In some embodiments, the torsion elastic component includes a hollow cylindrical shell, a rotating shaft is coaxially arranged inside the shell, an elastomer is arranged between the rotating shaft and the inner wall of the shell, the end of the rotating shaft is fixedly connected to the rear end of the swing arm, and when the swing arm is pressed and swung, the rotating shaft is driven to rotate, and the elastomer forces the rotating shaft to rotate, so that the scraper is in close contact with the belt surface.

[0009] In some embodiments, a first mounting hole is provided on the end face of the rotating shaft, and a second mounting hole is provided on the rear end of the swing arm, and the first mounting hole and the second mounting hole are fixed by bolts; after the scraper abuts against the belt, the swing arm swings due to the pressure of the belt, driving the rotating shaft to rotate, and at the same time, the elastomer provides a reverse torque to force the rotating shaft to rotate in the opposite direction, so that the scraper and the belt fit more closely, thereby improving the belt cleaning effect.

[0010] In some embodiments, the radial cross-sections of the shell and the rotating shaft are both square, and the angle between the side wall of the rotating shaft and the side wall of the shell is 45°. Four cavities are formed between the rotating shaft and the shell for filling the elastomer. The purpose of this design is to make the torque applied by the elastomer to the rotating shaft more uniform and to improve the structural stability of the torsion elastic component.

[0011] In some embodiments, the elastomer is made of elastic materials such as rubber or polyurethane.

[0012] In some embodiments, a first through hole is opened in the middle of the tool holder, a second through hole is opened in the middle of the scraper, the pin shaft is installed in the first through hole and the second through hole, and the pin shaft is locked by a nut after passing through the first through hole and the second through hole.

[0013] The second aspect of the present application provides a belt cleaning device, including a crossbeam fixedly installed under the return belt, a plurality of floating scrapers fixedly installed on the top of the crossbeam, and the torsion elastic component fixedly installed on the crossbeam; adjacent floating scrapers are arranged at intervals, and the length direction of the scraper is perpendicular to the transmission direction of the return belt.

[0014] In some embodiments, there are multiple crossbeams, and the multiple crossbeams are arranged at intervals along the transmission direction of the return belt, and the multiple floating scrapers on adjacent crossbeams are staggered to form a multi-row, spaced, and staggered floating scraper array, forming multiple cleaning points that complement each other on the belt surface, thereby achieving full coverage cleaning of the belt surface and improving the belt cleaning effect.

[0015] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in this application are used to illustrate preferred embodiments, so that those skilled in the art can clearly understand various other advantages and benefits, and should not be considered as limitations of this application. In addition, the same reference numerals are used throughout the drawings to represent the same or similar components.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a floating scraper in one embodiment of the present application;

[0018] Figure 2 This is an exploded schematic diagram of a floating scraper in one embodiment of the present application;

[0019] Figure 3 This is a schematic cross-sectional structure diagram of a floating scraper in one embodiment of the present application;

[0020] Figure 4 This is a structural schematic diagram of a belt cleaning device in one embodiment of the present application;

[0021] Icons: 1. Scraper; 2. Tool holder; 3. Swing arm; 4. Torsion elastic component; 5. Pin; 6. Housing; 7. Rotating shaft; 8. Elastomer; 9. First mounting hole; 10. Second mounting hole; 11. Bolt; 12. First through hole; 13. Second through hole; 14. Crossbeam. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0025] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0026] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0027] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] See also Figure 1-Figure 3 In a first aspect, an embodiment of the present application provides a floating scraper, comprising a scraper 1, a tool holder 2, a swing arm 3 and a torsion elastic component 4, wherein the tool holder 2 and the scraper 1 are hingedly connected via a pin 5; the front end of the swing arm 3 is fixedly connected to the tool holder 2, and the rear end is rotatably connected to the torsion elastic component 4, and the torsion elastic component 4 is used to provide a reverse torque to force the swing arm 3 to return to its position.

[0029] In the technical solution provided by the present application, the blade holder 2 is connected to the torsion elastic component 4 through the swing arm 3, so that the scraper 1 as a whole can float up and down. The swing arm 3 cooperates with the torsion elastic component 4 to play a certain vibration reduction role, reducing the damage caused by the scraper 1 to the belt surface, thereby extending the service life of the belt. At the same time, the scraper 1 is rotatably connected to the blade holder 2 through the pin 5, so that when the scraper 1 fits the belt, it can automatically adapt to the pits on the belt surface and float left and right. Since the scraper 1 as a whole is always pressed against the belt surface by the swing arm 3 and the torsion elastic component 4, the scraper 1 can automatically return to its left and right ends to improve the belt cleaning effect.

[0030] Please continue reading Figure 1 , Figure 2 In some embodiments, two swing arms 3 are provided, and the front ends of the two swing arms 3 are respectively connected to the two ends of the tool holder 2, and the rear ends of the two swing arms 3 are respectively rotatably connected to the two ends of the torsion elastic component 4; by providing two swing arms 3, the structural stability of the floating scraper is improved, so that the scraper 1 can float up and down as a whole and the left and right ends can float up and down more stably.

[0031] Please continue reading Figure 3 In some embodiments, the torsion elastic component 4 includes a hollow cylindrical shell 6, a rotating shaft 7 is coaxially arranged inside the shell 6, an elastic body 8 is arranged between the rotating shaft 7 and the inner wall of the shell 6, and the end of the rotating shaft 7 is fixedly connected to the rear end of the swing arm 3. When the swing arm 3 is pressed and swung, the rotating shaft 7 is driven to rotate, and the elastic body 8 forces the rotating shaft 7 to rotate, so that the scraper 1 is in close contact with the belt surface.

[0032] Please continue reading Figure 2 , Figure 3 In some embodiments, a first mounting hole 9 is provided on the end face of the rotating shaft 7, and a second mounting hole 10 is provided on the rear end of the swing arm 3, and the first mounting hole 9 and the second mounting hole 10 are fixed by bolts 11; after the scraper 1 abuts against the belt, the swing arm 3 swings under the pressure of the belt, driving the rotating shaft 7 to rotate. At the same time, the elastomer 8 provides a reverse torque to force the rotating shaft 7 to rotate in the opposite direction, so that the scraper 1 fits more closely with the belt, thereby improving the belt cleaning effect.

[0033] In a specific embodiment, the first mounting hole 9 and the second mounting hole 10 can be square holes, and the square holes coincide with the axis of the rotating shaft 7; the two square holes can be connected by square shaft transmission (which can adapt to the installation requirements of multiple angles of the swing arm 3), and the relative rotation between the swing arm 3 and the rotating shaft 7 can be avoided by the cooperation of the square holes and the square shafts.

[0034] In another specific embodiment, the first mounting hole 9 and the second mounting hole 10 can also be designed as circular holes, and keyways need to be provided on the inner walls of the circular holes. The two circular holes with keyways can be connected by a cylindrical shaft with a key block on the outer wall, which can also achieve the same effect as mentioned above.

[0035] Please continue reading Figure 2 , Figure 3 In another embodiment, two circular holes can be set on the end face of the rotating shaft 7 (four circular holes are set in this embodiment to meet the installation requirements of the swing arm 3 at multiple angles). The two circular holes are symmetrically arranged on both sides of the axis of the rotating shaft 7, and two matching circular holes are set at the rear end of the swing arm 3. The two groups of circular holes are connected and fixed correspondingly by two bolts 11, which can also achieve the same effect as above.

[0036] Please continue reading Figure 3 In some embodiments, the radial cross-sections of the shell 6 and the rotating shaft 7 are both square, and the angle between the side wall of the rotating shaft 7 and the side wall of the shell 6 is 45°. Four cavities are formed between the rotating shaft 7 and the shell 6 for filling the elastomer 8. The purpose of this design is to make the torque applied by the elastomer 8 to the rotating shaft 7 more uniform and to improve the structural stability of the torsion elastic component 4.

[0037] In a specific embodiment, the elastic body 8 may be made of elastic materials such as rubber or polyurethane.

[0038] Please continue reading Figure 2 In some embodiments, a first through hole 12 is opened in the middle of the tool holder 2, a second through hole 13 is opened in the middle of the scraper 1, the pin 5 is installed in the first through hole 12 and the second through hole 13, and the pin 5 passes through the first through hole 12 and the second through hole 13 and is locked by a nut.

[0039] In some embodiments, the blade edge of the scraper 1 is an arc surface that fits the belt surface. The length of the scraper 1 does not exceed 160 mm, and the blade edge is an arc that is high in the middle and low at both ends, which makes it easier to fit and press the belt, thereby improving the belt cleaning effect.

[0040] Please continue reading Figure 4 The second aspect of the embodiment of the present application provides a belt cleaning device, including a beam 14 fixedly installed under the return belt, a plurality of floating scrapers fixedly installed on the top of the beam 14, and the shell 6 fixedly installed on the beam 14; adjacent floating scrapers are arranged at intervals, and the length direction of the scraper 1 is perpendicular to the transmission direction of the return belt.

[0041] Please continue reading Figure 4In some embodiments, there are multiple crossbeams 14, and the multiple crossbeams 14 are arranged at intervals along the transmission direction of the return belt, and the multiple floating scrapers on adjacent crossbeams 14 are arranged in a staggered manner to form a multi-row, spaced, and staggered floating scraper array, forming multiple cleaning points that complement each other on the belt surface, thereby achieving full coverage cleaning of the belt surface and improving the belt cleaning effect.

[0042] When the floating scraper of this embodiment is in use, due to the action of the swing arm 3 and the torsion elastic component 4, the scraper 1 can float up and down as a whole, so as to buffer the impact force when the scraper 1 abuts against the belt and reduce the damage of the scraper 1 to the belt; and the scraper 1 is rotatably installed on the tool holder 2 through the pin shaft 5, so that the left and right ends of the scraper 1 can float up and down, and because the scraper 1 as a whole is always pressed against the belt surface by the action of the swing arm 3 and the torsion elastic component 4, the left and right ends of the scraper 1 can automatically return to their original positions, so that the scraper 1 automatically adapts to the lateral potholes on the belt surface, reduces the gap between the scraper 1 and the belt surface, and improves the cleaning effect.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A floating scraper, characterized in that: The invention comprises a scraper (1), a tool holder (2), a swing arm (3) and a torsion elastic component (4); the tool holder (2) and the scraper (1) are hingedly connected via a pin shaft (5); the front end of the swing arm (3) is fixedly connected to the tool holder (2), and the rear end is rotationally connected to the torsion elastic component (4); the torsion elastic component (4) is used to provide a reverse torque to force the swing arm (3) to return to its original position.

2. A floating scraper according to claim 1, characterized in that: The swing arms (3) are provided with two, the front ends of the two swing arms (3) are respectively connected to the two ends of the tool holder (2), and the rear ends of the two swing arms (3) are respectively rotatably connected to the two ends of the torsion elastic component (4).

3. A floating scraper according to claim 1, characterized in that: The torsion elastic component (4) comprises a hollow cylindrical shell (6), a rotating shaft (7) is coaxially arranged inside the shell (6), an elastic body (8) is arranged between the rotating shaft (7) and the inner wall of the shell (6), and the end of the rotating shaft (7) is fixedly connected to the rear end of the swing arm (3).

4. A floating scraper according to claim 3, characterized in that: The end surface of the rotating shaft (7) is provided with a first mounting hole (9), the rear end of the swing arm (3) is provided with a second mounting hole (10), and the first mounting hole (9) and the second mounting hole (10) are fixed by bolts (11).

5. A floating scraper according to claim 3, characterized in that: The radial cross-sections of the shell (6) and the rotating shaft (7) are both square, and the angle between the side wall of the rotating shaft (7) and the side wall of the shell (6) is 45°. Four cavities are formed between the rotating shaft (7) and the shell (6) for filling the elastomer (8).

6. A floating scraper according to claim 3, characterized in that: The elastic body (8) is made of rubber or polyurethane.

7. A floating scraper according to claim 1, characterized in that: A first through hole (12) is opened in the middle of the tool holder (2), a second through hole (13) is opened in the middle of the scraper (1), and the pin shaft (5) is installed in the first through hole (12) and the second through hole (13).

8. A belt cleaning device, characterized in that: It comprises a crossbeam (14) fixedly mounted below the return belt, a plurality of floating scrapers as claimed in any one of claims 1 to 7 being fixedly mounted on the top of the crossbeam (14), and the torsion elastic component (4) being fixedly mounted on the crossbeam (14); adjacent floating scrapers are arranged at intervals, and the length direction of the scraper (1) is perpendicular to the transmission direction of the return belt.

9. A belt cleaning device according to claim 8, characterized in that: A plurality of crossbeams (14) are provided, and the plurality of crossbeams (14) are arranged at intervals along the transmission direction of the return belt, and a plurality of floating scrapers on adjacent crossbeams (14) are arranged in a staggered manner.

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