A return idler roller for a conveyor

Abstract

This utility model discloses a return idler roller for a conveyor, belonging to the field of conveyor technology. It includes a shaft, with two bearings fixedly connected to the circumferential surface of the shaft. A roller is fixedly connected to the circumferential surface of the two bearings. Two fixing plates are detachably connected to the circumferential surface of the shaft, located at opposite ends of the roller. An adjusting rod is rotatably connected between the two fixing plates, located on one side of the roller. Two guide grooves are fixedly connected to the circumferential surface of the adjusting rod. In this utility model, when the roller comes into contact with the conveyor belt for an extended period and becomes contaminated with impurities, the rotating block is positioned using positioning bolts and positioning holes. This causes two scrapers to extend outwards and contact the surfaces of the conveyor belt and the roller respectively. The two scrapers clean the impurities on the surfaces of the conveyor belt and the roller, keeping the circumferential surface of the roller flat, thereby ensuring the effective conveying of the return trip of the conveyor belt.

Description

Technical Field

[0001] This utility model relates to the field of conveyor technology, and more specifically, to a return idler roller for a conveyor. Background Technology

[0002] Conveyors are key equipment for continuous material transport in industrial production. Their core function is to transfer materials from one place to another through the movement of traction components (such as conveyor belts and chains) or load-bearing components (such as rollers and buckets).

[0003] Currently, return idlers are a core component of belt conveyors, used to support the conveyor belt when it returns unloaded, preventing it from sagging or running off-track. However, existing return idlers are prone to accumulating impurities after prolonged contact with the conveyor belt. These impurities tend to accumulate on the circumferential surface of the idler, resulting in an uneven surface and affecting its performance. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a return idler for a conveyor, which aims to solve the problem that the return idler is prone to being contaminated with impurities when in contact with the conveyor belt for a long time. The impurities tend to accumulate on the circumferential surface of the idler, which will lead to an uneven surface of the idler and affect the performance.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A return idler roller for a conveyor includes a shaft. Two bearings are fixedly connected to the circumferential surface of the shaft. Rollers are fixedly connected to the circumferential surfaces of the two bearings. Two fixed plates are detachably connected to the circumferential surface of the shaft, and the two fixed plates are located at opposite ends of the rollers. An adjusting rod is rotatably connected between the two fixed plates and is located on one side of the roller. Two guide grooves are fixedly connected to the circumferential surface of the adjusting rod, and the two guide grooves are arranged at a 90-degree angle around the central axis of the adjusting rod. Two scrapers are slidably connected between the two fixed plates, and one scraper corresponds to the roller. Rollers are rotatably connected to both scrapers, and the two rollers are slidably connected within the two guide grooves. A rotating block is fixedly connected to one end of the adjusting rod and extends through to one side of one of the fixed plates. A positioning bolt is threaded into the rotating block. Two positioning holes are provided on one of the fixed plates, and the two positioning holes correspond to the positioning bolts.

[0009] As a preferred embodiment of this utility model, each of the two scrapers is fixedly connected to two limiting sliders, and each of the two fixed plates is provided with two limiting grooves, and the four limiting sliders are respectively slidably connected in the four limiting grooves.

[0010] As a preferred embodiment of this utility model, two sealing blocks are fixedly connected to the circumferential surface of the shaft, and the two sealing blocks are respectively located at the two end openings of the roller and correspond to the two bearings.

[0011] As a preferred embodiment of this utility model, the circumferential surface of the shaft is threaded with two nuts, and the two nuts are respectively located on the opposite side of the two fixing plates.

[0012] As a preferred embodiment of this utility model, the circumferential surface of the roller is fixedly connected with two limiting protrusions, and the two limiting protrusions are symmetrically distributed.

[0013] 3. Beneficial Effects

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) In this scheme, the roller conveys the return of the conveyor belt on the conveyor. When the roller is in contact with the conveyor belt for a long time and gets contaminated with impurities, the rotating block is used to position the roller by inserting the positioning bolt and positioning hole. This allows the two scrapers to spread outward and contact the surfaces of the conveyor belt and the roller respectively. The two scrapers can clean the impurities on the surface of the conveyor belt and the roller, keeping the circumferential surface of the roller flat, thereby ensuring the conveying effect of the return of the conveyor belt. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a perspective view of a portion of the structure of this utility model;

[0019] Figure 4 In this utility model Figure 3 Exploded view.

[0020] Explanation of the labels in the diagram:

[0021] 1. Shaft; 2. Bearing; 3. Roller; 4. Fixing plate; 5. Adjusting rod; 6. Guide groove block; 7. Scraper; 8. Roller; 9. Rotary block; 10. Positioning bolt; 11. Positioning hole; 12. Limiting slider; 13. Limiting groove; 14. Sealing block; 15. Nut; 16. Limiting protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] Please see Figure 1-4 A return idler roller for a conveyor includes a shaft 1, two bearings 2 fixedly connected to the circumferential surface of the shaft 1, and rollers 3 fixedly connected to the circumferential surfaces of the two bearings 2. Two fixing plates 4 are detachably connected to the circumferential surface of the shaft 1, and the two fixing plates 4 are respectively located at both ends of the rollers 3. An adjusting rod 5 is rotatably connected between the two fixing plates 4, and the adjusting rod 5 is located on one side of the rollers 3. Two guide groove blocks 6 are fixedly connected to the circumferential surface of the adjusting rod 5, and the two guide groove blocks 6 are set at a 90-degree angle around the central axis of the adjusting rod 5. Two scrapers 7 are slidably connected between the two fixing plates 4, and one scraper 7 corresponds to the roller 3. Rollers 8 are rotatably connected to both scrapers 7, and the two rollers 8 are slidably connected to the two guide groove blocks 6. A rotating block 9 is fixedly connected to one end of the adjusting rod 5, and the rotating block 9 extends through to one side of one fixing plate 4. A positioning bolt 10 is threaded into the rotating block 9. Two positioning holes 11 are opened on one fixing plate 4, and the two positioning holes 11 correspond to the positioning bolts 10.

[0027] In this embodiment, the shaft 1 is mounted on the conveyor, so that the circumferential surface of the roller 3 contacts the return section of the conveyor belt. The roller 3 is rotatably connected to the shaft 1 through two bearings 2, providing rolling support for the return of the conveyor belt and ensuring stable movement of the return. When impurities accumulate in the roller 3 due to prolonged contact with the conveyor belt, the rotating block 9 drives the adjusting rod 5 to rotate between the two fixed plates 4. The adjusting rod 5 drives the two guide trough blocks 6 to rotate, and the two guide trough blocks 6 respectively cause the two internal rollers 8 to roll, thereby driving the two scrapers 7 away from the adjusting rod 5. One scraper 7 rises to contact the conveyor belt, and the other scraper 7 contacts the surface of the roller 3 from one side. At this time, the rotating block 9 drives the positioning bolt 10 to rotate to correspond with the positioning hole 11 on the lower side. By rotating the positioning bolt 10 and inserting it into the positioning hole 11 on the lower side, the two scrapers 7 are kept stable in their current position. During the return of the conveyor belt, the two scrapers 7 clean the impurities on the conveyor belt and the roller 3 respectively, preventing the accumulation of impurities from affecting the movement of the return of the conveyor belt.

[0028] Specifically, each of the two scrapers 7 has two fixedly connected limit sliders 12, and each of the two fixed plates 4 has two limit grooves 13, with the four limit sliders 12 slidably connected to the four limit grooves 13 respectively.

[0029] In this embodiment, when the two scrapers 7 slide, they respectively drive the four limiting sliders 12 to slide in the four limiting grooves 13. The four limiting sliders 12 and the four limiting grooves 13 are used to restrict the two scrapers 7 so that the two scrapers 7 can be kept in the required position.

[0030] Specifically, two sealing blocks 14 are fixedly connected to the circumferential surface of the shaft 1, and the two sealing blocks 14 are located at the two end openings of the roller 3, corresponding to the two bearings 2.

[0031] In this embodiment, two sealing blocks 14 block the two bearings 2 from the openings on both sides of the roller 3 to prevent dust from affecting the rolling of the two bearings 2.

[0032] Specifically, the circumferential surface of the shaft 1 is threaded with two nuts 15, and the two nuts 15 are located on opposite sides of the two fixing plates 4.

[0033] In this embodiment, two nuts 15 are used to fix two fixing plates 4, so that the two fixing plates 4 are fixed on the shaft 1 to support the adjusting rod 5.

[0034] Specifically, two limiting protrusions 16 are fixedly connected to the circumferential surface of the roller 3, and the two limiting protrusions 16 are symmetrically distributed.

[0035] In this embodiment, the two limiting protrusions 16 are used to block the conveyor belt from both sides to prevent the conveyor belt from deviating during the return stroke.

[0036] Working principle: Shaft 1 is installed on the conveyor, allowing roller 3 to support and contact the return section of the conveyor belt. Roller 3 is rotatably connected to shaft 1 via two bearings 2, enabling stable conveyor movement. When impurities accumulate on roller 3 due to the conveyor belt, affecting surface flatness, rotating block 9 causes adjusting rod 5 to rotate. Adjusting rod 5 drives two guide blocks 6 to rotate, which in turn push two scrapers 7 via two rollers 8. The scrapers 7 then contact the surfaces of the conveyor belt and roller 3 respectively. At this time, rotating block 9 drives positioning bolt 10 to rotate and align with the lower positioning hole 11. Rotating positioning bolt 10 inserts it into the lower positioning hole 11, keeping the two scrapers 7 stable in their current position. During the return journey of the conveyor belt, roller 3 rotates and is scraped by one of the scrapers 7. One scraper 7 directly cleans impurities from the conveyor belt, thus preventing impurities from accumulating on the roller 3 and affecting the return of the conveyor belt. After the impurities on the roller 3 and the conveyor belt are cleaned, the positioning bolt 10 is moved out of the positioning hole 11 on the lower side by rotating it in the opposite direction. Then, the rotating block 9 is rotated in the opposite direction, and the rotating block 9 drives the adjusting rod 5 to reset. The adjusting rod 5 pulls the two scrapers 7 to reset through the two guide groove blocks 6 and the two rollers 8, canceling the contact between the two scrapers 7 and the conveyor belt and the roller 3. At this time, the positioning bolt 10 corresponds to the other positioning hole 11. By rotating the positioning bolt 10 into the other positioning hole 11, the rotating block 9 and the adjusting rod 5 are fixed, and the two scrapers 7 are kept in the current position, so that the roller 3 can stably support the return of the conveyor belt.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A return idler roller for a conveyor, comprising a shaft (1), characterized in that: Two bearings (2) are fixedly connected to the circumferential surface of the shaft (1), and rollers (3) are fixedly connected to the circumferential surfaces of the two bearings (2). Two fixing plates (4) are detachably connected to the circumferential surface of the shaft (1), and the two fixing plates (4) are located at the two ends of the rollers (3). An adjusting rod (5) is rotatably connected between the two fixing plates (4), and the adjusting rod (5) is located on one side of the rollers (3). Two guide groove blocks (6) are fixedly connected to the circumferential surface of the adjusting rod (5), and the two guide groove blocks (6) are set at a 90-degree angle around the central axis of the adjusting rod (5). Two scrapers (7) are slidably connected between the fixed plates (4), and one scraper (7) corresponds to the roller (3). Rollers (8) are rotatably connected to both scrapers (7), and the two rollers (8) are slidably connected to the two guide slots (6). One end of the adjusting rod (5) is fixedly connected to a rotating block (9), and the rotating block (9) extends through to one side of a fixed plate (4). A positioning bolt (10) is threaded into the rotating block (9). Two positioning holes (11) are opened on one of the fixed plates (4), and the two positioning holes (11) correspond to the positioning bolts (10).

2. The return idler roller of a conveyor according to claim 1, characterized in that: Two limiting sliders (12) are fixedly connected to each of the two scrapers (7), and two limiting grooves (13) are opened on each of the two fixed plates (4), and the four limiting sliders (12) are slidably connected in the four limiting grooves (13).

3. The return idler roller of a conveyor according to claim 2, characterized in that: Two sealing blocks (14) are fixedly connected to the circumferential surface of the shaft (1), and the two sealing blocks (14) are located at the two ends of the roller (3) and correspond to the two bearings (2).

4. The return idler roller of a conveyor according to claim 3, characterized in that: The circumferential surface of the shaft (1) is threaded with two nuts (15), and the two nuts (15) are located on opposite sides of the two fixing plates (4).

5. The return idler roller of a conveyor according to claim 4, characterized in that: The circumferential surface of the roller (3) is fixedly connected to two limiting protrusions (16), and the two limiting protrusions (16) are symmetrically distributed.

Images