A waterproof electric roller for belt conveyors

Abstract

This utility model discloses a waterproof electric roller for belt conveyors, including a roller shell, a geared motor installed inside the roller shell, and a multi-layer sealing structure, including an O-ring, a front oil seal, a T-shaped rubber guard coil, and a rear oil seal; a positioning structure is also provided between the T-shaped rubber guard coil and the motor shaft; this utility model combines the triple protection of oil seal, O-ring, and sealant to construct an all-round, multi-layer sealing barrier, effectively preventing moisture intrusion, and maintaining internal dryness even under long-term immersion or high-pressure water conditions, significantly improving the waterproof reliability and service life of the electric roller; a special annular groove is designed in the sealant application area on the motor shaft surface. This innovative structure not only enhances the stability of the sealant during application and prevents axial displacement during solidification, but also plays an axial limiting role, ensuring a tight bond between the sealant and the motor shaft after solidification.

Description

Technical Field

[0001] This utility model belongs to the field of electric roller technology, specifically relating to a waterproof electric roller for belt conveyors. Background Technology

[0002] As a key piece of equipment for material conveying in industrial production, belt conveyors are widely used in mining, ports, power, building materials and other fields. One of its core components, the electric roller, not only bears the heavy responsibility of driving the belt, but also needs to adapt to various complex working environments, including harsh conditions such as humidity, dust and even water immersion. Therefore, the waterproof performance of the electric roller is directly related to the operational stability and service life of the belt conveyor, and is one of the important indicators for measuring its performance.

[0003] Traditional electric rollers often employ simple sealing rings or single-layer waterproofing measures. While these designs may maintain basic functionality in the face of light moisture or brief splashes, they often fail to achieve ideal waterproofing under extreme conditions such as long-term immersion or high-pressure water washing. Moisture intrusion can lead to short circuits inside the motor, reduced insulation performance, corrosion, accelerated component wear, and ultimately affect the normal operation of the electric roller and even the entire conveyor belt, increasing maintenance costs and downtime.

[0004] Specifically, the existing technology has the following shortcomings:

[0005] 1. Simple sealing structure: Most electric rollers rely on a single oil seal or O-ring for waterproofing, lacking multi-layered sealing protection, making it difficult to cope with complex and changing working conditions.

[0006] 2. Unstable application of sealant: In situations where sealant is required for auxiliary sealing, due to the lack of specialized design, the sealant is prone to axial displacement during application and curing, resulting in poor sealing performance.

[0007] 3. Inaccurate component positioning: If the T-shaped rubber protective coil inside the electric roller does not have an effective positioning structure during installation, installation deviations are likely to occur, affecting the stability and sealing of the overall structure.

[0008] Therefore, this utility model proposes a waterproof electric roller for belt conveyors. Utility Model Content

[0009] The purpose of this utility model is to provide a waterproof electric roller for belt conveyors to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a waterproof electric roller for a belt conveyor, comprising a roller housing, a geared motor installed inside the roller housing, a front cover and a rear cover respectively installed at both ends of the roller housing, a rear support shaft rotatably installed inside the rear cover and extending to the rear of the rear cover, a front support shaft rotatably installed inside the front cover and extending to the front of the front cover, and a motor shaft disposed at the output end of the geared motor and passing through the inside of the front support shaft to the front end of the roller housing, and further comprising...

[0011] The multi-layer sealing structure includes an O-ring, a front oil seal, a T-type rubber retaining ring, and a rear oil seal.

[0012] A rear oil seal is provided between the rear end of the rear support shaft and the rear cover. An O-ring seal is provided on the inner wall of the rear end of the front support shaft to fit tightly with the motor shaft. The T-shaped rubber guard coil is fitted on the surface of the motor shaft, and the rear end of the motor shaft is inserted into the inner side of the front support shaft. The inner side of the front support shaft is filled with sealant between the O-ring seal and the T-shaped rubber guard coil.

[0013] The front oil seal is installed between the front support shaft and the front cover;

[0014] A positioning structure is also provided between the T-shaped rubber protective coil and the motor shaft.

[0015] Preferably, the inner wall of the rear end of the front support shaft is provided with an O-ring mounting groove for installing an O-ring seal.

[0016] Preferably, it also includes a sealant limiting structure, which includes a central annular groove and two end annular grooves formed on the surface of the motor shaft, and both the end annular grooves and the central annular groove are located inside the front support shaft, with the two end annular grooves located on both sides of the central annular groove.

[0017] Preferably, the cross-section of the end annular groove is a right-angled triangle with the inclined surface facing the central annular groove, and the cross-section of the central annular groove is rectangular.

[0018] Preferably, the sealant limiting structure further includes an annular inner end groove formed on the inner wall of the rear end of the T-shaped rubber guard coil, and the inner wall of the annular inner end groove is provided with multiple triangular grooves.

[0019] Preferably, the positioning structure includes an annular positioning protrusion disposed on the inner wall of the front end of the T-shaped rubber protective coil, and an annular positioning groove corresponding to the annular positioning protrusion is opened on the surface of the motor shaft, and the annular positioning protrusion is engaged in the annular positioning groove.

[0020] Preferably, it also includes stainless steel bearings, with two stainless steel bearings installed between the rear support shaft and the rear cover.

[0021] Preferably, a stainless steel bearing is also installed between the front support shaft and the front cover.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. Multi-layer sealing system: Combining the triple protection of oil seals, O-rings and sealant, a comprehensive and multi-layer sealing barrier is constructed, which effectively prevents moisture intrusion and keeps the inside dry even in long-term immersion or high-pressure water environment, significantly improving the waterproof reliability and service life of the electric roller.

[0024] 2. Annular groove design: An annular groove is specially designed in the sealant application area on the motor shaft surface. This innovative structure not only enhances the stability of the sealant during application and prevents axial displacement during solidification, but also plays an axial limiting role, ensuring a tight bond between the sealant and the motor shaft after solidification, further improving the sealing effect.

[0025] 3. T-type rubber coil guard positioning structure: By designing a special positioning structure between the T-type rubber coil guard and the motor shaft, the coil guard is accurately positioned after installation, avoiding sealing problems caused by installation deviations, ensuring the overall stability and sealing of the electric roller after assembly, reducing maintenance needs, and improving production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is an exploded view of the present invention;

[0028] Figure 3 This is a cross-sectional view of the present invention;

[0029] Figure 4 This utility model Figure 3 A magnified view of a portion of region A in the middle;

[0030] Figure 5 This utility model Figure 4 A magnified view of a portion of region B in the middle;

[0031] Figure 6 This utility model Figure 5 A magnified view of a portion of region C in the middle;

[0032] In the diagram: 1. Roller shell; 2. Front cover; 3. Rear cover; 4. Front support shaft; 5. Rear support shaft; 6. Motor shaft; 61. Central annular groove; 62. End annular groove; 63. Annular positioning groove; 7. Rear oil seal; 8. Gear motor; 9. Stainless steel bearing; 10. O-ring seal; 11. Front oil seal; 12. T-type rubber guard coil; 121. Annular inner end groove; 122. Triangular groove; 123. Annular positioning protrusion. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example

[0035] Please see Figures 1 to 6 This is an embodiment of the present utility model, which provides the following technical solution: a waterproof electric roller for a belt conveyor, including a roller shell 1, a reduction motor 8 installed inside the roller shell 1, a front cover 2 and a rear cover 3 respectively installed at both ends of the roller shell 1, a rear support shaft 5 rotatably installed inside the rear cover 3 and extending to the rear of the rear cover 3, a front support shaft 4 rotatably installed inside the front cover 2 and extending to the front of the front of the front cover 2, and a motor shaft 6 disposed at the output end of the reduction motor 8 and passing through the inside of the front support shaft 4 to the front end of the roller shell 1. (The above structures are all prior art and do not involve the technical improvements of this application; the specific working principle will not be elaborated here.) It also includes...

[0036] The multi-layer sealing structure includes an O-ring 10, a front oil seal 11, a T-shaped rubber guard coil 12, and a rear oil seal 7. The O-ring 10, the front oil seal 11, the T-shaped rubber guard coil 12, and the rear oil seal 7 are all made of fluororubber. Through the design of the multi-layer sealing structure, an all-round, multi-layer sealing barrier is constructed, which effectively prevents moisture from entering and effectively improves the waterproof performance.

[0037] A rear oil seal 7 is provided between the rear end of the rear support shaft 5 and the rear cover 3. An O-ring 10 that fits tightly with the motor shaft 6 is provided on the inner wall of the rear end of the front support shaft 4. A T-shaped rubber guard coil 12 is fitted on the surface of the motor shaft 6, and the rear end of the motor shaft 6 is inserted into the inner side of the front support shaft 4. The inner side of the front support shaft 4 is filled with sealant between the O-ring 10 and the T-shaped rubber guard coil 12.

[0038] The front oil seal 11 is installed between the front support shaft 4 and the front cover 2;

[0039] A positioning structure is also provided between the T-shaped rubber protective coil 12 and the motor shaft 6.

[0040] In this embodiment, preferably, the inner wall of the rear end of the front support shaft 4 is provided with an O-shaped assembly groove for installing the O-ring 10, so as to ensure the stable installation of the O-ring 10 and prevent axial displacement after the O-ring 10 is installed.

[0041] In this embodiment, preferably, a sealant limiting structure is also included. The sealant limiting structure includes a central annular groove 61 and two end annular grooves 62 formed on the surface of the motor shaft 6. Both the end annular grooves 62 and the central annular groove 61 are located inside the front support shaft 4, and the two end annular grooves 62 are located on both sides of the central annular groove 61. When the operator pours sealant into the inner side of the front support shaft 4, that is, between the O-ring seal 10 and the T-shaped rubber guard coil 12, the sealant will enter the gap between the motor shaft 6 and the front support shaft 4, and at the same time, it will also enter the end annular grooves 62 and the central annular groove 61. At this time, the sealant that has not fully solidified will produce a certain axial limiting effect after entering the end annular grooves 62 and the central annular groove 61, preventing axial displacement during the solidification process. When the sealant is fully solidified, the part of it in the central annular groove 61 and the end annular grooves 62 will form an integrated annular limiting ring, which further plays the role of axial limiting, ensuring the sealing stability of the sealant and further improving the sealing effect.

[0042] In this embodiment, preferably, the cross-section of the end annular groove 62 is a right-angled triangle with the inclined surface facing the central annular groove 61. The design of the right-angled triangle cross-section allows the sealant in the end annular groove 62 to solidify and be stably limited like a ring barb. The cross-section of the central annular groove 61 is rectangular.

[0043] In this embodiment, preferably, the sealant limiting structure further includes an annular inner end groove 121 formed on the inner wall of the rear end of the T-shaped rubber guard coil 12, and the inner wall of the annular inner end groove 121 is provided with a plurality of triangular grooves 122, so that the sealant poured between the front support shaft 4 and the motor shaft 6 can also enter the annular inner end groove 121 and the plurality of triangular grooves 122. After the sealant is completely solidified, it can solidify together with the T-shaped rubber guard coil 12, further ensuring the stability of the sealant. At the same time, the sealant entering the triangular grooves 122 can also form a plurality of inverted locking blocks, further ensuring the stability of the sealant.

[0044] In this embodiment, preferably, the positioning structure includes an annular positioning protrusion 123 disposed on the inner wall of the front end of the T-shaped rubber coil guard 12. Both are made of fluororubber and will undergo elastic deformation when compressed. The surface of the motor shaft 6 is provided with an annular positioning groove 63 corresponding to the annular positioning protrusion 123, and the annular positioning protrusion 123 is inserted into the annular positioning groove 63. When the T-shaped rubber coil guard 12 is fitted onto the surface of the motor shaft 6, the operator can squeeze the annular positioning protrusion 123 into the annular positioning groove 63 to ensure that the T-shaped rubber coil guard 12 is limited to a certain extent. At this time, the T-shaped rubber coil guard 12 is installed in place, avoiding axial displacement during the installation process and facilitating installation.

[0045] In this embodiment, preferably, it also includes stainless steel bearings 9, and two stainless steel bearings 9 are installed between the rear support shaft 5 and the rear cover 3.

[0046] In this embodiment, preferably, a stainless steel bearing 9 is also installed between the front support shaft 4 and the front cover 2.

[0047] Although embodiments of the present invention have been shown and described (see the detailed description above), 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof electric roller for a belt conveyor, comprising a roller housing (1), a geared motor (8) installed inside the roller housing (1), a front cover (2) and a rear cover (3) respectively installed at both ends of the roller housing (1), a rear support shaft (5) rotatably installed inside the rear cover (3) and extending to the rear of the rear cover (3), a front support shaft (4) rotatably installed inside the front cover (2) and extending to the front of the front of the front cover (2), and a motor shaft (6) disposed at the output end of the geared motor (8) and passing through the inside of the front support shaft (4) to the front end of the roller housing (1), characterized in that: Also includes The multi-layer sealing structure includes an O-ring (10), a front oil seal (11), a T-type rubber guard ring (12), and a rear oil seal (7); A rear oil seal (7) is provided between the rear end of the rear support shaft (5) and the rear cover (3). An O-ring (10) that fits tightly against the motor shaft (6) is provided on the inner wall of the rear end of the front support shaft (4). The T-shaped rubber guard coil (12) is fitted on the surface of the motor shaft (6), and the rear end of the motor shaft (6) is inserted into the inner side of the front support shaft (4). The inner side of the front support shaft (4) is filled with sealant between the O-ring (10) and the T-shaped rubber guard coil (12). The front oil seal (11) is installed between the front support shaft (4) and the front cover (2); A positioning structure is also provided between the T-shaped rubber protective coil (12) and the motor shaft (6).

2. The waterproof electric roller for belt conveyors according to claim 1, characterized in that: The rear end inner wall of the front support shaft (4) is provided with an O-ring assembly groove for installing the O-ring seal (10).

3. The waterproof electric roller for belt conveyors according to claim 1, characterized in that: It also includes a sealant limiting structure, which includes a central annular groove (61) and two end annular grooves (62) formed on the surface of the motor shaft (6), and the end annular grooves (62) and the central annular groove (61) are both located inside the front support shaft (4), and the two end annular grooves (62) are located on both sides of the central annular groove (61).

4. A waterproof electric roller for a belt conveyor according to claim 3, characterized in that: The cross-section of the end annular groove (62) is a right-angled triangle with the inclined surface facing the central annular groove (61), and the cross-section of the central annular groove (61) is rectangular.

5. A waterproof electric roller for a belt conveyor according to claim 3, characterized in that: The sealant limiting structure also includes an annular inner end groove (121) opened on the inner wall of the rear end of the T-shaped rubber guard coil (12), and the inner wall of the annular inner end groove (121) is provided with a plurality of triangular grooves (122).

6. A waterproof electric roller for a belt conveyor according to claim 1, characterized in that: The positioning structure includes an annular positioning protrusion (123) set on the inner wall of the front end of the T-shaped rubber protective coil (12), and an annular positioning groove (63) corresponding to the annular positioning protrusion (123) is opened on the surface of the motor shaft (6), and the annular positioning protrusion (123) is inserted into the annular positioning groove (63).

7. A waterproof electric roller for a belt conveyor according to claim 1, characterized in that: It also includes stainless steel bearings (9), with two stainless steel bearings (9) installed between the rear support shaft (5) and the rear cover (3).

8. A waterproof electric roller for a belt conveyor according to claim 7, characterized in that: A stainless steel bearing (9) is also installed between the front support shaft (4) and the front cover (2).

Images