Roller device of belt conveyor

Abstract

The utility model discloses a roller device of a belt conveyor, which belongs to the technical field of belt conveying and comprises a sieve pore shell connected with a rotating shaft. The sieve hole shell is formed by welding a plurality of metal strips, two conical flow guide parts are arranged in the sieve hole shell, the bottom sizes of the two conical flow guide parts are the same, the bottoms of the two conical flow guide parts are fixedly connected through a middle check ring, and the two conical flow guide parts, the middle check ring and the sieve hole shell are coaxial. The check ring is fixedly connected with the metal strip, and the diameter of the middle position of the screen hole shell is larger than that of the two ends of the screen hole shell. Materials are discharged from the roller by arranging the screen hole shell with the screen holes, the conical flow guide part and the baffle, the materials are prevented from being adhered or stacked on the belt, and after falling into the belt, the materials enter the roller through the screen holes and are discharged from the conical surfaces to the two ends of the roller through rotation of the roller and partitioned guide of the baffle. Materials are prevented from accumulating on the surface of the belt or roller.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt conveying, and in particular relates to a roller device of a belt conveyor. Background Art

[0002] As we all know, belt conveyor is a bulk material conveying equipment, which is widely used in mining, metallurgy, chemical industry and other fields. One of the key components of belt conveyor is the roller device. Since the roller device plays an important role in transmitting power and torque during the operation of the conveyor, ensuring the safe and normal operation of the roller device is one of the necessary conditions to ensure the safe and normal operation of the belt conveyor.

[0003] At present, in traditional belt conveyors, the roller device mainly includes a cylindrical metal roller. In order to increase the friction between the metal roller and the belt, a rubber coating layer with a certain thickness is provided on the outer wall of the metal roller. The material of the rubber coating layer includes vulcanized rubber, natural rubber, nitrile rubber, chloroprene rubber, EPDM rubber, polyurethane, etc.

[0004] However, it was found during use that the roller device of the above structure still has the following defects:

[0005] First, when the material slides off the upper surface of the belt, part of the sliding material will fall on the upper surface of the return belt. When the upper surface of the return belt contacts the rubber layer again, the rubber layer has a certain adhesion force. Therefore, the adhesive material on the rubber layer is difficult to separate in time. As the working time of the roller device increases, a large amount of adhesive material will accumulate on the rubber layer. The presence of these adhesive materials will not only change the friction between the rubber layer and the belt, causing uneven force on the belt and affecting the transmission efficiency, but also accelerate the wear of the belt and even cause an accident of deviation from the running track.

[0006] Secondly, the rubber layer has the problem of aging and falling off. During the operation of the belt conveyor, based on the principle of frictional heat generation, as the working time of the roller device increases, a large amount of heat will be generated between the belt and the rubber layer. Under long-term high-temperature operation, the rubber layer of the roller device often partially falls off. With the accumulation of falling events, the surface of the rubber layer becomes rough, which not only affects the smooth transmission of the belt, but also causes belt wear and shortens the service life of the roller device. Utility Model Content

[0007] The utility model aims to provide a roller device for a belt conveyor, so as to solve the technical problem in the above background technology that materials are easily adhered to the inner surface of the belt during the belt conveying process.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A roller device for a belt conveyor comprises a sieve hole shell, wherein the sieve hole shell is connected to a rotating shaft; the sieve hole shell is welded from a plurality of metal strips, and two conical guide parts are arranged in the sieve hole shell, wherein the bottoms of the two conical guide parts have the same size, and the bottoms of the two conical guide parts are fixedly connected by an intermediate retaining ring, and the two conical guide parts, the intermediate retaining ring and the sieve hole shell are in a coaxial relationship, wherein the intermediate retaining ring is fixedly connected to the middle part of the metal strip, and the two ends of the metal strip are fixedly connected to the retaining rings at both ends, and the diameter of the middle position of the sieve hole shell is larger than the diameter of the two ends.

[0010] Preferably, the diameter of the middle position of the sieve shell is 3 mm to 5 mm larger than the diameter of the two ends of the sieve shell.

[0011] Preferably, the outer wall of each conical guide portion is provided with four baffles, and the four baffles on the outer wall of each conical guide portion are respectively welded and fixed to the baffle rings at both ends.

[0012] Preferably, the bottoms of the two conical guide parts and the middle retaining ring are welded to each other.

[0013] Preferably, an intermediate retaining ring is welded to the bottom of each conical guide portion, and the two intermediate retaining rings are welded to each other.

[0014] Preferably, the distance between adjacent metal strips is 1 cm to 2 cm.

[0015] Preferably, the metal strip is welded to the outer side of the middle retaining ring.

[0016] Preferably, the diameter of the sieve shell gradually decreases from the middle position to both ends.

[0017] Preferably, the sieve housing is connected to the rotating shaft via retaining rings at both ends.

[0018] Preferably, the conical guide portion is welded to the rotating shaft.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model provides a sieve hole shell with sieve holes, a conical guide part and a baffle. In the process of material transmission, the adhesive material can be discharged from the conical guide part to prevent the material from sticking or accumulating on the inner surface of the belt. When the material falls on the inner surface of the belt, the adhesive material first enters the inside of the sieve hole shell through the sieve hole through friction, and then is discharged to the left and right ends of the roller device along the outer wall of the conical guide part through the rotation of the conical guide part and the partition guidance of the baffle, which can prevent the material from sticking and accumulating on the inner surface of the belt or the surface of the roller.

[0021] 2. The utility model sets a non-equal diameter sieve shell, specifically, the middle size is larger than the two end sizes, which can prevent the belt from running off track. Compared with the traditional technology, the surface composed of steel bars is an uneven surface (the steel bars are raised parts, and the gaps between the steel bars are recessed parts), which can increase the friction coefficient. Therefore, compared with the rubber surface of the traditional roller, the friction force of the sieve shell on the belt is increased, further improving the anti-skid performance, preventing the belt from slipping and running off track. The diameter of the sieve shell in the middle position is larger than the diameter of the sieve shell at both ends. The self-guiding effect of the belt is achieved through the guiding effect, further avoiding the problem of belt deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of a preferred embodiment of the utility model;

[0023] Figure 2 In the preferred embodiment of the utility model Figure 1 Axial section view of

[0024] Figure 3 It is a right view of a preferred embodiment of the utility model.

[0025] In the figure: 1. rotating shaft; 2. sieve hole shell; 3. retaining rings at both ends; 4. middle retaining ring; 5. conical guide part; 6. baffle. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0027] like Figure 1-Figure 3 As shown:

[0028] First embodiment: A roller device of a belt conveyor, comprising a rotating shaft 1, a sieve housing 2, two end retaining rings 3, a middle retaining ring 4, a conical guide portion 5, and a baffle 6; wherein:

[0029] The sieve housing 2 is connected to the rotating shaft 1. In order to facilitate the export of the bonding material, the sieve housing 2 is welded by a plurality of metal strips. There are two conical guides 5. The bottoms of the two conical guides 5 are the same size. The bottoms of the two conical guides 5 are fixedly connected by an intermediate retaining ring 4. The two conical guides 5 are located in the inner cavity of the sieve housing 2. The two conical guides 5, the intermediate retaining ring 4, and the sieve housing 2 are in a coaxial relationship. The intermediate retaining ring 4 is fixedly connected to the middle part of the metal strip. The two ends of the metal strip are fixedly connected to the retaining rings 3 at both ends. The diameter of the middle position of the sieve housing 2 is greater than the diameter of the two ends. The metal strip can be a steel strip.

[0030] Second embodiment: Based on the above first embodiment, the diameter of the middle position of the sieve shell is 3mm to 5mm larger than the diameter of the two ends of the sieve shell. This arrangement can ensure that the belt does not deviate.

[0031] The third embodiment: Based on the above-mentioned first embodiment, in order to facilitate the smooth discharge of the adhesive material, four baffles 6 are provided on the outer wall of each conical guide portion 5, and the four baffles 6 on the outer wall of each conical guide portion are respectively welded and fixed to the retaining rings 3 at both ends.

[0032] Fourth embodiment: Based on the first embodiment, in order to achieve the tightness of the connection, the bottoms of the two conical guide parts 5 and the intermediate retaining rings 4 are welded to each other. Alternatively, the bottom 5 of each conical guide part is welded with an intermediate retaining ring, and the two intermediate retaining rings are welded to each other.

[0033] Fifth embodiment: Based on the first embodiment, the distance between adjacent metal strips is 1 cm to 2 cm.

[0034] Sixth embodiment: Based on the above first embodiment, in order to ensure the smoothness of the outer surface of the belt, the metal strip is welded to the outer side of the middle retaining ring 4.

[0035] Seventh embodiment: Based on the above-mentioned first embodiment, the diameter of the sieve shell 2 gradually decreases from the middle position to both ends.

[0036] Eighth embodiment: Based on the first embodiment, the sieve housing 2 is connected to the rotating shaft 1 through retaining rings 3 at both ends.

[0037] Ninth embodiment: Based on the first embodiment, the conical guide portion 5 is welded on the rotating shaft 1.

[0038] In the utility model, the rotating shaft 1 runs through the center of the roller device, transmits and conducts the power energy provided by the main transmission mechanism to the sieve shell 2, drives the sieve shell 2 to rotate synchronously, and realizes the power transmission effect on the belt; the sieve shell 2 is composed of metal strips welded horizontally parallel to the rotating shaft 1 with equal gaps, which can not only increase the friction force, but also use the friction between the metal strips and the belt to make the material bonded to the inner surface of the belt fall off through the sieve holes between the metal strips, and the fallen material is discharged to the left and right ends of the roller device through the outer wall of the conical guide part 5; the middle diameter of the sieve shell is 3 to 5 mm larger than the diameter at the two ends, and the larger diameter in the middle can play a role of center guidance, effectively preventing the belt from running off during operation; the retaining rings 3 at the two ends and the middle retaining ring 4 are respectively welded to the inner side of the sieve hole shell 2 to play a fixing role; two conical guide parts 5 are arranged in the sieve hole shell 2, and the bottom sizes of the two conical guide parts 5 are the same. The bottoms of the two conical guide parts 5 are fixedly connected by the middle retaining ring 4, that is, the bottom edges of the two conical guide parts 5 are welded to the middle retaining ring 4, and the conical guide parts 5 can use the gravity of the material itself to make it more smoothly discharged from the inside of the drum device to the left and right ends; a plurality of baffles 6 (four in this embodiment) are evenly welded on the outer wall of the conical guide part 5, and the conical guide part 5 is evenly divided into fan-shaped areas of equal angles. The baffles 6 and the conical guide part 5 work together to effectively guide the material in the drum device to prevent adhesion and accumulation, and more efficiently realize the self-cleaning function of the drum device.

[0039] Working principle:

[0040] When the material is transported by the belt, part of the material on the outer surface of the belt deviates during the falling process and falls on the inner surface of the belt. When the inner surface of the belt contacts the mesh housing 2 by friction, the material adhered to the inner surface of the belt first contacts the metal strips on the mesh housing 2. Since there are several gaps between the metal strips of the mesh housing, the material adhered to the belt can fall off from the gaps between the metal strips during the friction between the belt and the mesh housing 2. The fallen material enters the inside of the mesh housing 2 from the gaps between the metal strips. As the mesh housing 2 rotates, the fallen material is guided to the conical guide 5 inside the drum device. Under the partition guidance of the baffle 6, the material is discharged from the drum device along the outer wall of the conical guide 5 under the action of its own gravity. During the operation of the belt, the larger diameter of the mesh housing 2 in the middle than at the two ends produces a certain center guiding effect on the belt, so that the belt tends to run in the center track position and is not easy to deviate. If the belt starts to deviate, it will also give the belt a certain lateral resistance, forcing the belt to return to the original center track.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller device for a belt conveyor, characterized in that: The invention comprises a sieve hole shell (2), wherein the sieve hole shell (2) is connected to a rotating shaft (1), the sieve hole shell (2) is welded from a plurality of metal strips, two conical flow guide parts (5) are arranged inside the sieve hole shell (2), the bottoms of the two conical flow guide parts (5) have the same size, the bottoms of the two conical flow guide parts (5) are fixedly connected via an intermediate retaining ring (4), and the two conical flow guide parts (5), the intermediate retaining ring (4) and the sieve hole shell (2) are in a coaxial relationship, the intermediate retaining ring (4) is fixedly connected to the middle part of the metal strip, the two ends of the metal strip are fixedly connected to the retaining rings (3) at both ends, and the diameter of the middle position of the sieve hole shell (2) is larger than the diameter of the two ends.

2. The roller device of the belt conveyor according to claim 1, characterized in that: The diameter of the middle position of the sieve hole shell is 3mm to 5mm larger than the diameter of the two ends of the sieve hole shell.

3. The roller device of the belt conveyor according to claim 1, characterized in that: Four baffles (6) are arranged on the outer wall of each conical flow guide portion (5), and the four baffles (6) on the outer wall of each conical flow guide portion are respectively welded and fixed to the baffle rings (3) at both ends.

4. The roller device of the belt conveyor according to claim 1, characterized in that: The bottoms of the two conical guide parts (5) and the middle retaining ring (4) are welded to each other.

5. The roller device of the belt conveyor according to claim 1, characterized in that: A middle retaining ring is welded to the bottom (5) of each conical guide portion (5), and the two middle retaining rings are welded to each other.

6. The roller device of the belt conveyor according to claim 1, characterized in that: The distance between adjacent metal strips is 1 cm to 2 cm.

7. The roller device of the belt conveyor according to claim 1, characterized in that: The metal strip is welded to the outer side of the middle retaining ring (4).

8. The roller device of the belt conveyor according to claim 1, characterized in that: The diameter of the sieve shell (2) gradually decreases from the middle position to both ends.

9. The roller device of the belt conveyor according to claim 1, characterized in that: The sieve hole housing (2) is connected to the rotating shaft (1) via retaining rings (3) at both ends.

10. The roller device of the belt conveyor according to claim 1, characterized in that: The conical flow guide portion (5) is welded to the rotating shaft (1).

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