Belt conveyor wet material scraping carrier roller structure

Abstract

The utility model belongs to the technical field of belt roller, specifically discloses a kind of belt conveyor wet material scraping's roller structure, including belt conveyor body and several rollers, and the both ends of roller are equipped with ladder shaft head, ladder shaft head is connected with the bearing of belt conveyor body, the roller surface of roller is uniformly equipped with spiral groove, the bottom of spiral groove is equipped with air hole, the inside of roller is equipped with central gas path, central gas path is all communicated with air hole, the inside of ladder shaft head of one end of roller is equipped with sealing bearing, and the inner ring of sealing bearing is communicated with air pipe, and air pipe is communicated with central gas path.Existing scraper can cause severe wear and tear and scratch on the surface of the belt, which can greatly shorten the service life of the belt. The utility model sets the roller with spiral groove and gas path under the belt with adhered material, and the airflow can scrape and blow off the wet material adhered to the spiral groove, so as to avoid the scraping and wear of the traditional scraper on the belt, thereby prolonging the service life of the belt.

Description

Technical Field

[0001] This utility model relates to the field of belt idler technology, specifically to an idler structure for scraping wet material from a belt conveyor. Background Technology

[0002] In mining, metallurgy, and chemical industries, belt conveyors are core equipment for continuous material transport, and their reliability and efficiency directly determine the stability and cost of the entire production process. However, in actual production, when conveying viscous materials with high moisture content, such as refined mineral powder, bentonite, and coke powder, the surface tension and molecular adsorption forces between material particles easily cause them to adhere to the surface of the conveyor belt.

[0003] This uneven layer of material adhering to the belt surface disrupts the belt's dynamic balance, causing it to deviate during operation. This not only exacerbates wear on the belt edges but also increases the coefficient of friction between the belt and the idlers, leading to increased operating resistance and a significant rise in drive motor energy consumption. To address these issues, the industry standard solution is to install fixed scrapers for removal.

[0004] However, the fixed scraper has a rigid line contact with the belt surface. Under long-term operation, the scraper will cause severe wear on the belt surface. In particular, after the scraper edge wears down, it will scratch the belt, resulting in a significant reduction in the belt's service life. Utility Model Content

[0005] The purpose of this utility model is to provide a roller structure for scraping wet material from a belt conveyor, so as to solve the problem that existing fixed scrapers will cause severe wear and tear on the belt surface under long-term operation, resulting in a significant reduction in the belt's service life.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a roller structure for scraping wet material from a belt conveyor, comprising a belt conveyor body and several rollers, each roller having a stepped shaft end at both ends, each stepped shaft end being connected to a bearing of the belt conveyor body, the roller surface of each roller supporting the conveyor belt of the belt conveyor body, each roller being located directly below the belt conveyor body, each roller surface having several evenly distributed spiral grooves, each spiral groove having several air holes at its bottom, each roller having a central air passage inside, the central air passage being connected to each air hole, a sealed bearing being provided inside the stepped shaft end at one end of the roller, the inner ring of the sealed bearing being connected to an air pipe, the air pipe being connected to the central air passage.

[0007] The working principle of this utility model is as follows: a roller structure for scraping wet material from a belt conveyor. When the belt conveyor body is started, the conveyor belt runs continuously and drives the roller below to rotate. During the operation, compressed air enters the central air passage through the air pipe and sealed bearing, and then blows off the wet material adhering to the spiral groove through the air hole.

[0008] The beneficial effects of this invention are as follows: By installing a special idler roller with spiral grooves and air passages under the belt with adhered material, during operation, the conveyor belt drives the idler roller to rotate, and compressed air is blown onto the inner surface of the belt through air pipes, a central air passage, and air holes. The airflow scrapes and blows away the wet material adhering to the spiral grooves, dislodging the material. This non-contact or flexible contact cleaning method completely avoids the rigid scraping and wear of the belt surface by traditional fixed scrapers, significantly extending the service life of the belt while reducing equipment operating resistance and energy consumption.

[0009] Option 2, which is a preferred option of the basic option, has a gradually changing groove depth for each spiral groove, with the shallowest groove in the middle and gradually increasing depth towards both ends of the roller. Designing the spiral groove as a gradually changing structure with a shallow middle and deep ends allows the material scraped by the spiral groove to move along both sides of the spiral groove, and combined with gas purging, the material is discharged from both sides.

[0010] Option 3, which is a preferred option of Option 2, has a groove depth of 5mm in the middle and a maximum groove depth of 10mm at both ends; while ensuring that the idler roller has sufficient structural strength and support capacity, it achieves optimal flow guidance.

[0011] Option 4, a preferred embodiment of the basic option, involves a resistance wire wound circumferentially inside the idler roller, an electric slip ring at the stepped shaft end, and an electric slip ring whose rotor is electrically connected to the resistance wire. A control box is mounted on the conveyor body and electrically connected to the stator of the electric slip ring. Power is supplied to the resistance wire inside the idler roller via the electric slip ring, heating the roller surface. The warm roller surface reduces the humidity of the material on the belt surface, weakens its stickiness, and can even thaw frozen material, significantly reducing its adhesion.

[0012] Option 5, which is a preferred option of the basic option, is a conical hole with a diameter that gradually decreases from the inside of the roller towards the roller surface; the gradually decreasing air hole causes a sudden change in airflow velocity, increases the flow rate, and converts some kinetic energy into heat energy, thus raising the airflow temperature.

[0013] Option 6, a preferred option of the basic option, is provided with a scraper conveyor at the bottom of the conveyor body, and a sealing cover is provided between the conveyor body and the scraper conveyor; the conveyor and the scraper conveyor are sealed together to prevent material blown away by gas from splashing and secondary dust. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of the idler roller structure for scraping wet material from a belt conveyor according to this utility model; Figure 2 This is a schematic diagram of the structure of the idler roller structure for scraping wet material from a belt conveyor in this utility model when removing the sealing cover; Figure 3 This is a schematic diagram of the idler roller structure in the wet material scraping structure of a belt conveyor according to this utility model; Figure 4 This is a cross-sectional view of the idler roller in the idler roller structure for scraping wet material on a belt conveyor according to this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below through specific embodiments: The reference numerals in the accompanying drawings are as follows: 1-Belt conveyor body; 2-Idler roller; 3-Stepped shaft end; 4-Spiral groove; 5-Air hole; 6-Central air passage; 7-Sealed bearing; 8-Air pipe; 9-Resistance wire; 10-Electric slip ring; 11-Control box; 12-Scraper conveyor; 13-Sealing cover.

[0016] like Figures 1 to 4 The diagram shows a roller structure for scraping wet material from a belt conveyor, comprising a belt conveyor body 1 and several rollers 2. Each roller 2 has a stepped shaft head 3 fixedly connected to both ends. Each stepped shaft head 3 is connected to a bearing in the belt conveyor body 1. The roller surface of each roller 2 supports the conveyor belt of the belt conveyor body 1. Each roller 2 is located directly below the belt conveyor body 1. Each roller 2 has several evenly spaced spiral grooves 4 on its roller surface. The groove depth of each spiral groove 4 is gradually increasing, with the shallowest depth in the middle and gradually deepening towards both ends of the roller 2. The groove depth in the middle of the spiral groove 4 is 5mm, and the maximum groove depth at both ends is 10mm. The bottom of the groove 4 has several air holes 5. The air holes 5 are conical holes with a diameter that gradually decreases from the inside of the idler roller 2 toward the roller surface. Each idler roller 2 has a central air passage 6 inside, which is connected to each air hole 5. A sealed bearing 7 is provided on the inner side of the stepped shaft head 3 at one end of the idler roller 2. The inner ring of the sealed bearing 7 is connected to an air pipe 8, which is connected to the central air passage 6. The air source is 0.4-0.6MPa compressed air. The intermittent spraying method of 3s spraying and 2s stopping is controlled by a solenoid valve. Combined with the rotation speed of the idler roller, it can better blow away the material adhering to the belt and also blow away the material in the spiral groove of the idler roller. The inner circumferential winding of the idler roller 2 is a resistance wire 9, which is a nickel-chromium alloy resistance wire. An electric slip ring 10 is provided on the stepped shaft head 3. The rotor of the electric slip ring 10 is electrically connected to the resistance wire 9. A control box 11 is provided on the belt conveyor body 1, and the control box 11 is electrically connected to the stator of the electric slip ring 10. A scraper conveyor 12 is provided at the bottom of the belt conveyor body 1, and a sealing cover 13 is provided between the belt conveyor body 1 and the scraper conveyor 12. The implementation method of this embodiment is as follows: When the belt conveyor body 1 is started, the conveyor belt runs continuously and drives the idler roller 2 below to rotate. At the same time, the resistance wire 9 is powered by the control box 11 through the electric slip ring 10. The resistance wire 9 heats the idler roller 2, softens the sticky material, and prevents the material from sticking to the idler roller. During operation, compressed air enters the central air passage 6 through the air pipe 8 and the sealed bearing 7, and then blows off the wet material adhering to the spiral groove 4 through the air hole 5. The spiral groove 4 has a gradual structure with the shallowest groove depth in the middle and gradually deepens towards both ends. The scraped material moves to both sides of the idler roller under the guidance of the spiral groove and falls off from both sides of the belt under the airflow. The scraped and blown-off material falls into the scraper conveyor 12 set at the bottom of the belt conveyor for transportation.

[0017] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A roller structure for scraping wet material from a belt conveyor, characterized in that, The system includes a conveyor belt body (1) and several idlers (2). Each idler (2) has a stepped shaft head (3) at both ends. Each stepped shaft head (3) is connected to the conveyor belt body (1) by a bearing. The roller surface of each idler (2) is used to support the conveyor belt of the conveyor belt body (1). Each idler (2) is located directly below the conveyor belt body (1). Each idler (2) has several evenly distributed spiral grooves (4) on its roller surface. Each spiral groove (4) has several air holes (5) at its bottom. Each idler (2) has a central air passage (6) inside. The central air passage (6) is connected to each air hole (5). A sealed bearing (7) is provided on the inner side of the stepped shaft head (3) at one end of the idler (2). The inner ring of the sealed bearing (7) is connected to an air pipe (8). The air pipe (8) is connected to the central air passage (6).

2. The idler roller structure for scraping wet material from a belt conveyor according to claim 1, characterized in that, The groove depth of each spiral groove (4) is gradually increasing, with the shallowest groove in the middle and gradually increasing towards both ends of the idler roller (2).

3. The idler roller structure for scraping wet material from a belt conveyor according to claim 2, characterized in that, The spiral groove (4) has a groove depth of 5 mm in the middle and a maximum groove depth of 10 mm at both ends.

4. The idler roller structure for scraping wet material from a belt conveyor according to claim 1, characterized in that, The inner circumferential winding of the idler roller (2) is provided with a resistance wire (9), the stepped shaft head (3) is provided with an electric slip ring (10), the rotor of the electric slip ring (10) is electrically connected to the resistance wire (9), the belt conveyor body (1) is provided with a control box (11), and the control box (11) is electrically connected to the stator of the electric slip ring (10).

5. The idler roller structure for scraping wet material from a belt conveyor according to claim 1, characterized in that, The air hole (5) is a conical hole whose diameter gradually decreases from the inside of the roller (2) toward the roller surface.

6. The idler roller structure for scraping wet material from a belt conveyor according to claim 1, characterized in that, The bottom of the belt conveyor body (1) is provided with a scraper conveyor (12), and a sealing cover (13) is provided between the belt conveyor body (1) and the scraper conveyor (12).

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