A belt conveyor rejection device for a roller press

Abstract

The present invention discloses a belt conveyor rejection device for a roll press, which includes a connecting plate and a roller. The connecting plate is arranged above the belt, and the roller is arranged below the connecting plate and rotatably connected thereto. It further includes a pull rod and a motor, wherein: the connecting plate includes a first rod and a second rod. One end of the first rod and the second rod are pivotally connected to form an angle, and the opening direction of the angle is the same as the belt transmission direction; the pull rod is arranged in the plane where the angle is located, and both ends of the pull rod are movably connected to the sides of the first rod and the second rod respectively; the motor is connected to the pull rod, and the motor drives the pull rod to move back and forth along the belt transmission direction, thereby driving the extension ends of the first rod and the second rod to perform an opening and closing movement. The structure of the present invention is novel, and the transportation of materials and the screening and rejection of materials are carried out synchronously, improving work efficiency; the present invention can be directly welded to the bracket of the belt conveyor, saving floor space.

Description

Technical Field

[0001] The present invention relates to a material blocking and spreading device, and specifically to a belt conveyor rejection device for a roller press. Background Art

[0002] The feeding belt conveyor of a roller press is a device for continuously transporting materials based on frictional drive. By driving the driving device to drive the rotating wheel to rotate, and using the frictional force generated between the rotating wheel and the belt, materials such as clinker, mineral powder, and admixture are transported to the weighing bin of the roller press.

[0003] Based on the principle of material bed grinding, the roller press continuously brings materials into the gap between two oppositely and synchronously rotating extrusion rollers, thereby realizing the extrusion of the materials. When the roller press is working, if there are large-sized particles on the feeding belt, it will cause an increase in the roller gap of the roller press, abnormal pressure fluctuations and vibrations, resulting in offset rollers. At the same time, it will cause an excessive instantaneous current, and even cause the roller press to trip.

[0004] Currently, the rejection of large-sized particles requires the assistance of a screening device. By setting sieve holes of different sizes to screen the materials, the screened materials are conveyed to the roller press through the belt. However, the existing screening devices have a small processing capacity, a large floor area, and a long screening time, and cannot meet the feeding requirements of the roller press. Summary of the Invention

[0005] The purpose of the present invention is to provide a belt conveyor rejection device for a roller press, which can intercept and reject large-sized materials on the belt conveyor, and avoid situations such as an increase in the roller gap of the roller press and abnormal vibrations.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A belt conveyor rejection device for a roller press includes a connecting plate and a roller. The connecting plate is arranged above the belt, and the roller is arranged below the connecting plate and is rotatably connected thereto. It also includes a pull rod and a motor. Among them: the connecting plate includes a first rod and a second rod. One end of the first rod and the second rod are pivotally connected to form an included angle, and the opening direction of the included angle is the same as the belt transmission direction; the pull rod is arranged in the plane where the included angle is located, and both ends of the pull rod are movably connected to the sides of the first rod and the second rod respectively; the motor is connected to the pull rod, and the motor drives the pull rod to move back and forth along the belt transmission direction, thereby driving the extending ends of the first rod and the second rod to make an opening and closing movement.

[0008] As a further solution of the present invention: a groove is provided at the end of the first rod at the pivot joint of the first rod and the second rod, the end of the second rod is accommodated in the groove, and a pin shaft is passed through the pivot joint of the first rod and the second rod, and the pin shaft is perpendicular to the plane where the included angle is located.

[0009] As a further solution of the present invention: The first rod and the second rod are provided with a plurality of mounting holes along their lengths. The top end of the roller is inserted through the mounting holes and is rotatably restricted therein, and the bottom end of the roller abuts against the working surface of the belt.

[0010] As a further solution of the present invention: The first rod is provided with a first chute, and the second rod is provided with a second chute. The two ends of the pull rod slide back and forth in the first chute and the second chute respectively.

[0011] As a further solution of the present invention: The roller includes a sleeve and a shaft core that are coaxially and movably sleeved; the top end of the shaft core is located above the sleeve, and the top end of the shaft core is inserted through the mounting hole, and a nut is threadedly connected to the outer periphery of the shaft core located on the upper end surface of the connecting plate.

[0012] As a further solution of the present invention: The motor is connected to the exact middle of the pull rod.

[0013] As a further solution of the present invention: Chamfers are formed at both ends of the pull rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is novel. By driving the first rod and the second rod to perform an opening and closing movement by a motor to push large pieces of materials to fall from the belt, the frictional force formed by the relative movement of the large pieces of materials and the roller causes the roller to rotate itself, thereby providing assistance for the passage of small pieces of materials. The transportation of materials and the screening and removal of materials are carried out simultaneously, improving work efficiency; the present invention can be directly welded to the bracket of the belt conveyor, saving floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 It is an installation schematic diagram of the present invention on the belt;

[0017] Figure 3 It is a structural schematic diagram of the first rod in the present invention;

[0018] Figure 4 It is a structural schematic diagram of the second rod in the present invention;

[0019] Figure 5 It is a structural schematic diagram of the roller in the present invention;

[0020] In the figure: 1 - connecting plate, 11 - first rod, 111 - first chute, 112 - groove, 12 - second rod, 121 - second chute, 13 - mounting hole, 2 - roller, 21 - sleeve, 22 - axle core, 23 - bearing, 24 - inner cylinder, 25 - circlip, 26 - nut, 3 - pull rod, 31 - chamfer, 4 - motor, 5 - pin shaft, 6 - push rod, 7 - belt, 8 - return spring, 9 - support rod, 10 - support leg. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , in the embodiment of the present invention, a belt conveying and removing device for a roller press includes a connecting plate 1 and a roller 2. The connecting plate 1 is disposed above the belt 7, and the roller 2 is disposed below the connecting plate 1 and rotatably connected thereto. It further includes a pull rod 3 and a motor 4, wherein: The connecting plate 1 includes a first rod 11 and a second rod 12, and one ends of the first rod 11 and the second rod 12 are pivotally connected to form an angle; The opening direction of the angle is the same as the transmission direction of the belt 7; A groove 112 is formed at the end of the first rod 11 at the pivot joint of the first rod 11 and the second rod 12, and the end of the second rod 12 is received in the groove 112. A pin shaft 5 is passed through the pivot joint of the first rod 11 and the second rod 12, and the pin shaft 5 is perpendicular to the plane where the angle is located. It should be particularly noted that when the angle reaches the maximum value, the position of the roller 2 closest to the extension end of the first rod 11 is still on the working surface of the belt 7. Similarly, the position of the roller 2 closest to the extension end of the second rod 12 is also still on the working surface of the belt 7. That is, the roller 2 always moves on the working surface of the belt 7.

[0023] The pull rod 3 is disposed in the plane where the angle is located, and both ends of the pull rod 3 are movably connected to the sides of the first rod 11 and the second rod 12 respectively; As Figures 3-4As shown, the first rod 11 is provided with a first chute 111, and the second rod 12 is provided with a second chute 121. Both ends of the pull rod 3 are respectively in the first chute 111 and the second chute 121. The motor 4 is connected to the pull rod 3, and the motor 4 drives the pull rod 3 to make a reciprocating motion back and forth along the transmission direction of the belt 7. At this time, both ends of the pull rod 3 slide back and forth in the first chute 111 and the second chute 121 respectively, thereby driving the extending ends of the first rod 11 and the second rod 12 to make an opening and closing motion, and further changing the size of the included angle; by changing the size of the included angle, the distance between adjacent rollers 2 in the width direction of the belt 7 is adjusted. Small pieces of material pass through the gap between adjacent rollers 2 and are conveyed into the roller press by the belt 7, while large pieces of material will be intercepted by it. As the first rod 11 and the second rod 23 continuously make an opening and closing motion, the large pieces of material automatically fall from both sides of the belt 7; for the interception of large pieces of material, specifically, when the included angle tends to become smaller, the large pieces of material move forward along the transmission direction of the belt 7 until the large pieces of material abut against the roller 2; when the included angle tends to become larger, the roller 2 gives the intercepted large pieces of material a thrust in the width direction of the belt, so as to push the large pieces of material to both sides of the belt and make them fall. At the same time, due to the frictional force between the large pieces of material and the roller 2, the roller 2 is driven to spin. The spinning directions of the multiple rollers 2 on the first rod 11 are the same, and the spinning directions of the multiple rollers 2 on the second rod 12 are the same. The spinning rollers 2 provide assistance for the small pieces of material passing through.

[0024] Further, the connection manner between the connecting plate 1 and the roller 2 is as follows: As Figures 3-4 shown, the first rod 11 and the second rod 12 are provided with a plurality of mounting holes 13 with the same spacing along their lengths. The roller 2 includes a sleeve 21 and a shaft core 22 that are coaxially and movably sleeved; the top end of the shaft core 22 is located above the sleeve 21, and the top end of the shaft core 22 passes through the mounting hole 13.

[0025] Further, a horizontally arranged push rod 6 is connected to the exact middle of the pull rod 3, and the other end of the push rod 6 is connected to the motor 4. This motor 4 provides power for the reciprocating motion of the pull rod 3. In addition, a return spring 8 is also provided in the triangle formed by the first rod 11, the second rod 12 and the pull rod 3. Both ends of the return spring 8 are respectively connected to the first rod 11 and the second rod 12. This return spring 8 can assist the included angle to reach the initial value, that is, the minimum value of the included angle. In order to ensure that both ends of the pull rod 3 slide without obstruction in the first chute 111 and the second chute 121 during the movement process, chamfers 31 are formed at both ends of the pull rod 3.

[0026] Please continue to refer to Figure 5, bearings 23 are sleeved on the upper and lower ends of the shaft core 22. The bearings 23 are deep groove ball bearings, and the outer circumference of the bearings 23 abuts against the inner wall of the sleeve 21. An inner cylinder 24 is sleeved on the outer wall of the shaft core 22. The inner cylinder 24 is located between the two deep groove ball bearings and provides support for the upper deep groove ball bearing. A nut 26 is threadedly connected to the outer circumference of the shaft core 22 above the connecting plate 1, and the outer diameter of the nut 26 is larger than the width of the mounting hole 13. The nut 26 serves to fix and support the roller 2. As the material moves, friction is generated when the material contacts the outer wall of the roller 2, and the friction drives the roller 2 to perform a self-rotation movement in the mounting hole 13. An elastic retaining ring 25 is sleeved on the shaft core 22 outside the bearing 23, and the two elastic retaining rings 25 can prevent the sleeve 21 and the bearing 23 from axially moving.

[0027] A support rod 9 is connected above the pin shaft 5. Support legs 10 are provided at the extended ends of the first rod 11 and the second rod 12. The support rod 9 and the support legs 10 are both fixed to the bracket of the belt conveyor by welding.

[0028] When the present invention is in use, the roller press belt conveying rejection device is fixed above the belt 7 by welding the support rod 9 and the support legs 10 to the bracket of the belt conveyor, ensuring that the pin shaft 5 is located at the center point in the width direction of the belt 7 and the bottom end of the roller 2 abuts against the working surface of the belt 7, thus completing the installation. The motor 4 is started, and the motor 4 drives the push rod 6 to perform a reciprocating movement back and forth. The push rod 6 drives the pull rod 3 to perform a reciprocating movement back and forth, thereby driving the first rod 11 and the second rod 12 to continuously perform an opening and closing movement. At this time, the two ends of the pull rod 3 slide back and forth in the first chute 111 and the second chute 121 respectively, causing the included angle formed by the first rod 11 and the second rod 12 to continuously change. Block-shaped materials of different sizes are conveyed on the belt 7 and move towards this rejection device. Small pieces of materials pass through the gaps between the adjacent rollers 2 and are then conveyed into the roller press. Small pieces of materials are intercepted by the rollers 2. When the included angle tends to become smaller, the large pieces of materials move forward along the transmission direction of the belt 7 until the large pieces of materials abut against the rollers 2. When the included angle tends to become larger, the roller 2 gives the intercepted large pieces of materials a thrust in the width direction of the belt, so as to push the large pieces of materials to both sides of the belt and make them fall. At the same time, due to the frictional effect generated by the relative movement between the large pieces of materials and the rollers 2, the self-rotation movement of the rollers 2 is driven. The self-rotation directions of the multiple rollers 2 on the first rod 11 are consistent, and the self-rotation directions of the multiple rollers 2 on the second rod 12 are consistent. The self-rotating rollers 2 provide assistance for the small pieces of materials passing through.

[0029] Although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0030] Therefore, the above description is only a preferred embodiment of the present application and is not used to limit the scope of implementation of the present application; that is, all equivalent transformations made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A belt conveyor rejection device for a roll press, comprising a connecting plate (1) and a roller (2), the connecting plate (1) is arranged above the belt (7), the roller (2) is arranged below the connecting plate (1) and is rotationally connected thereto, characterized in that, It further includes a pull rod (3) and a motor (4), wherein: The connecting plate (1) includes a first rod member (11) and a second rod member (12). One end of the first rod member (11) and the second rod member (12) are pivotally connected to form an included angle, and the opening direction of the included angle is the same as the transmission direction of the belt (7); The pull rod (3) is arranged in the plane where the included angle is located, and both ends of the pull rod (3) are movably connected to the sides of the first rod member (11) and the second rod member (12) respectively; The motor (4) is connected to the pull rod (3), and the motor (4) drives the pull rod (3) to move back and forth along the transmission direction of the belt (7), so as to drive the extending ends of the first rod member (11) and the second rod member (12) to perform an opening and closing movement; The first rod member (11) is provided with a first sliding groove (111), and the second rod member (12) is provided with a second sliding groove (121). Both ends of the pull rod (3) slide back and forth in the first sliding groove (111) and the second sliding groove (121) respectively; The first rod member (11) and the second rod member (12) are provided with a plurality of mounting holes (13) along their length directions. The top end of the roller (2) passes through the mounting holes (13) and is rotatably restricted therein, and the bottom end of the roller (2) abuts against the working surface of the belt (7).

2. The belt conveyor rejection device of a roll press according to claim 1, wherein, A groove (112) is provided at the end of the first rod member (11) at the pivotal connection of the first rod member (11) and the second rod member (12). The end of the second rod member (12) is received in the groove (112). A pin shaft (5) is passed through the pivotal connection of the first rod member (11) and the second rod member (12), and the pin shaft (5) is perpendicular to the plane where the included angle is located.

3. The belt conveyor rejection device of a roll press according to claim 1, wherein, The roller (2) includes a sleeve (21) and a shaft core (22) that are coaxially and movably sleeved; the top end of the shaft core (22) is located above the sleeve (21), and the top end of the shaft core (22) passes through the mounting hole (13), and a nut (26) is threadedly connected to the outer periphery of the shaft core (22) located on the upper end surface of the connecting plate (1).

4. The belt conveyor rejection device for a roll press according to claim 1, characterized in that, The motor (4) is connected to the exact middle of the pull rod (3).

5. The belt conveying and removing device of a roll press according to claim 1, characterized in that, Both ends of the pull rod (3) form chamfers (31).

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