Return rubber belt dust collection device of rubber belt conveyor

Abstract

The utility model discloses a return rubber belt dust collecting device of a rubber belt conveyor. The device is composed of a row brush, an air knife, a dust collecting box and an annular chain scraper. The dust collecting box is mounted behind a surface increasing wheel of the sealing-tape machine; a row brush is arranged on the upper surface of the return rubber belt in the dust collecting box; the air knife is arranged behind the row brush; the middle section of the bottom of the dust collecting box is opened; and the annular chain scraper is arranged around the sections of the sealing-tape machine and the dust collecting box. The dust collection device for the return stroke rubber belt of the rubber belt conveyor is specially used for cleaning dust and materials on the surface of the rubber belt of the return stroke section of the rubber belt conveyor, and the dust pollution and bulk material accumulation of a whole rubber belt conveyor vestibule caused by scattering of the dust and the materials on the way are avoided. The device is wide in application range, and can be used on the adhesive tape machine for transporting various materials with different properties (dry, wet, or wet and dry); and sticky dust and sticky materials brought out by the return adhesive tape can be cleaned at the first time.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal for belt conveyors, and particularly relates to a dust collection device for the return belt of a belt conveyor. Background Art

[0002] At present, the materials conveyed by belt conveyors used in China are mainly divided into two types: dry and wet. Dry materials carry dust, and wet materials have strong adhesiveness. Generally, contact scrapers are used for cleaning. However, the cleaning effect of contact scrapers is limited. Usually, there are still a small amount of fine materials adhering to the working surface of the belt. After passing through each return belt idler, they vibrate and fall off, bringing them to the entire belt conveyor corridor, which requires manual cleaning continuously. The repetitive workload is large, time-consuming and laborious. So far, there is no good solution, especially for those belt conveyors that convey both wet and dry materials, which is even more powerless. Summary of the Invention

[0003] The purpose of the utility model is to provide a new type of dust collection device for the return belt of a belt conveyor with a simple structure, more convenient maintenance and good use effect, which is used to solve the problem of poor cleaning effect of the return belt of the belt conveyor. This device can not only collect the dust generated by the return belt when conveying dry materials, but also solve the problem of material carrying along the way generated by the return belt when conveying wet materials. At the same time, it can also recover the materials shaken off by the return belt after passing through the snub pulley.

[0004] The dust collection device for the return belt of the belt conveyor consists of a row brush, an air knife, a dust collection box and an endless chain scraper; the dust collection box is installed behind the snub pulley of the belt conveyor; a row brush is arranged on the upper surface of the return belt inside the dust collection box; the air knife is arranged behind the row brush, and the cutting edge of the air knife blows towards the lower surface of the return belt, and the direction of the cutting edge of the air knife is opposite to the movement direction of the return belt; a group of sealing idlers is arranged at the outlet of the dust collection box; there is an opening in the middle section of the bottom of the dust collection box, and an endless chain scraper is arranged below; the endless chain scraper is arranged around the cross-section of the belt conveyor and the dust collection box, and regularly scrapes the deposited materials in the dust collection box onto the upper belt with a scraper and conveys them to the head hopper together with the materials conveyed by the belt conveyor.

[0005] The arrangement direction of the row brush is perpendicular to the movement direction of the return belt.

[0006] The row brush is a spring-type automatic compensation row brush, the brush body is made of steel wire or nylon wire, both ends of the row brush extend outside both sides of the dust collection box, and both ends are tensioned by springs, and limit pins are arranged at both ends to prevent the row brush from moving.

[0007] Travel switches are arranged on the dust collection box at both ends of the row brush.

[0008] The row brush can be replaced with a scraping blade.

[0009] The air knife is formed by the high-pressure air flow flowing in from a medium-high pressure blower.

[0010] The ring chain scraper conveyor adopts a ring chain or a roller chain for transmission.

[0011] The scraper is in the structure of a trapezoidal hopper.

[0012] A quick-opening manhole door is opened on the side of the dust collection box.

[0013] A dust collection hood and a dust removal pipeline are arranged at the outlet of the dust collection box for collecting the dust raised by the air knife.

[0014] A pressure detection sensor is arranged on the outlet air pipe of the medium-high pressure blower for monitoring the operating state of the air knife.

[0015] The dust collection device for the return belt of the belt conveyor designed by the utility model is mainly applied to the conveyor for transporting powdery or powdered materials, and is specially used for cleaning the ash and materials adhered to the surface of the return belt section of the belt conveyor, so as to avoid the dust pollution and bulk material accumulation in the entire belt conveyor corridor caused by the scattering of this part of the adhered ash and materials along the way. This device has a wide range of adaptability and can be used on belt conveyors for transporting various materials with different properties (dry, wet, or both dry and wet); it can clean the adhered ash and materials brought out by the return belt in a timely manner, avoiding bringing them to other places of the belt conveyor to cause environmental pollution and also not causing secondary pollution; this device has few moving parts, low energy consumption, perfect protection functions, low failure rate, convenient maintenance, and does not affect the maintenance of the belt conveyor. Brief Description of the Drawings

[0016] Figure 1 : Schematic structural diagram of the dust collection device for the return belt of the belt conveyor designed by the utility model;

[0017] Figure 2 : Longitudinal sectional view of the dust collection device for the return belt of the belt conveyor designed by the utility model;

[0018] In the figure: 1-belt conveyor, 2-return belt, 3-belt conveyor idler pulley, 4-ring chain scraper conveyor, 5-quick-opening manhole door, 6-dust collection box, 7-air knife, 8-sealed fixed-distance idler, 9-travel switch, 10-scraper conveyor drive device, 11-sprocket set, 12-brush support, 13-spring, 14-brush, 15-scraper, 16-ring chain. Detailed Description of the Invention

[0019] Embodiment 1

[0020] The dust collection device for the return belt of the belt conveyor consists of a row brush, an air knife, a dust collection box, and an endless chain scraper; the dust collection box is installed behind the idler pulley of the belt conveyor; a row brush is arranged on the upper surface of the return belt inside the dust collection box, and the arrangement direction of the row brush is perpendicular to the movement direction of the return belt. The row brush strongly sweeps the coarser dust-adhering and sticky materials embedded in the microcracks or damaged surfaces on the belt surface, and at the same time also plays a role in loosening the dust adhering to the belt surface; the air knife is arranged behind the row brush, and the blade of the air knife blows towards the lower surface of the return belt. The blade of the air knife faces the opposite direction of the movement direction of the return belt. The air knife blows the residual dust still adhering to the belt surface into the dust collection box. The air flow of the air knife changes direction in the collection box to form a vortex, making the blown-down dust not easy to deposit, which is convenient for the dust removal system to recycle; a set of sealing idlers is arranged at the outlet of the dust collection box to complete the outlet seal with the return belt. The inlet of the dust collection box is sealed by the return belt and the idler pulley of the belt conveyor; rubber seals are arranged at both ends of the upper sealing plate of the dust collection box at the inlet and outlet above the return belt; there is an opening in the middle section of the bottom of the dust collection box, and an endless chain scraper is arranged below; the endless chain scraper is arranged around the cross-section of the belt conveyor and the dust collection box, and regularly scrapes the deposited materials in the dust collection box to the upper belt with a scraper and conveys them to the head hopper together with the materials conveyed by the belt conveyor. The row brush is a spring-type automatic compensation wire row brush. The two ends of the row brush extend outside both sides of the dust collection box, and are tensioned by springs at both ends. Limit pins are arranged at both ends to prevent the row brush from moving; the spring compensation amount is the effective length of the brush body. When the brush body gradually wears, the spring provides the corresponding compensation amount. Travel switches are arranged on the dust collection box at both ends of the row brush to detect the wear condition. The row brush can be replaced with polyurethane scraping blades. The air knife is formed by the high-pressure air flow generated by a medium-high pressure blower. A pressure detection sensor is arranged on the outlet air pipe of the medium-high pressure blower to monitor the operation state of the air knife. A dust collection hood and a dust removal pipeline are arranged at the outlet of the dust collection box to collect the dust raised by the air knife to the external dust removal system. The endless chain scraper consists of a scraper conveyor drive device, a sprocket set, and an endless chain. The scraper is of a trapezoidal hopper structure to improve the conveying efficiency. A quick-opening manhole door is opened on the side of the dust collection box, which can quickly process the air knife and replace the row brush online (when the belt conveyor is in operation).

Claims

1. A return belt dust collecting device for a belt conveyor, characterized in that: The device consists of a row of brushes, an air knife, a dust collection box, and an annular chain scraper; the dust collection box is installed behind the surface increasing wheel of the belt conveyor; a row of brushes is arranged on the upper surface of the return belt in the dust collection box; the air knife is arranged behind the row of brushes, and the blade of the air knife blows against the lower surface of the return belt, and the blade of the air knife is opposite to the movement direction of the return belt; a group of sealing rollers are arranged at the outlet of the dust collection box; the middle section of the bottom of the dust collection box is open, and an annular chain scraper is arranged underneath; the annular chain scraper is arranged around the section of the belt conveyor and the dust collection box, and the deposited material in the dust collection box is regularly scraped onto the upper belt with a scraper, and transported to the head hopper together with the material transported by the belt conveyor.

2. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: The arrangement direction of the row of brushes is perpendicular to the movement direction of the return belt.

3. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: The exhaust brush is a spring-type automatic compensation exhaust brush, the brush body is a steel wire or a nylon wire, the two ends of the exhaust brush extend to the outside of the two sides of the dust collection box, the two ends are tensioned by springs, and limit pins are provided at both ends to prevent the exhaust brush from moving; travel switches are provided on the dust collection boxes at both ends of the exhaust brush.

4. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: The row brush can be replaced by a scraper blade.

5. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: The wind knife is formed by the inflow of high-pressure airflow generated by a medium- and high-pressure blower.

6. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: The annular chain scraper is driven by an annular chain or a roller chain.

7. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: The scraper is a trapezoidal hopper structure.

8. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: A quick-opening manhole door is arranged on the side of the dust collection box.

9. The return belt dust collecting device of the belt conveyor according to claim 1, characterized in that: A dust collecting hood and a dust removal duct are arranged at the outlet of the dust collecting box to collect dust generated by the wind knife.

10. The return belt dust collecting device of the belt conveyor according to claim 5, characterized in that: A pressure detection sensor is provided on the outlet air duct of the medium and high pressure blower to monitor the operating status of the air knife.

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