Automatic adjusting rain wiping device for tubular conveying belt

Abstract

The invention discloses an automatic adjusting rain wiping device for a tubular conveying belt. The automatic adjusting rain wiping device comprises a scraping plate support arranged at the bottom of the tubular conveying belt. A scraping plate is arranged at the top of the scraping plate bracket; the upper surface of the scraping plate is in contact with the bottom of the tubular conveying belt; two ends of the scraper support are respectively connected with steel wire ropes, and balancing weights are hung at the other ends of the steel wire ropes; the middle part of the steel wire rope bypasses a power transmission mechanism positioned above the tubular conveying belt; through cooperative use of the power transmission mechanism and the balancing weight, the height of the scraper blade is automatically adjusted under the action of constant gravity provided by the balancing weight, so that the scraper blade is always attached to the bottoms of tubular conveying belts with different pipe diameters, stable and reliable scraping of rainwater is achieved, the tubular conveying belts are effectively protected, and the service life of the tubular conveying belts is prolonged. And the tubular conveying belt with the mainstream pipe diameter has high universality.

Description

Technical Field

[0001] This invention belongs to the technical field of wiper devices, specifically relating to an automatic adjusting wiper device for tubular conveyor belts. Background Technology

[0002] Tubular conveyor belts are devices that use flat conveyor belts rolled into a tubular shape and supported by idler rollers to achieve enclosed conveying of bulk materials. They are widely used in outdoor operations such as metallurgy and mining. Their core advantage is reducing material dust and spillage. However, during outdoor operations, rainwater can easily seep in through the conveyor belt ends or gaps, leading to problems such as material becoming damp and clumping (e.g., iron ore clumping can easily block the conveyor belt), accelerated corrosion and aging of the conveyor belt itself (rubber material), increased conveying resistance, and increased equipment energy consumption.

[0003] Currently, curved rain shield devices are typically installed above tubular conveyor belts. These devices consist of a fixed bracket mounted on the idler assembly of the tubular conveyor belt, with a curved steel plate welded to the top of the bracket. This curved steel plate covers the top area of ​​the conveyor belt, blocking vertically falling rainwater. However, if the tubular conveyor belt is replaced with one of different diameters, the curved steel plate becomes less effective at blocking rain. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic adjusting wiper device for tubular conveyor belts. Through the combined use of a power transmission mechanism and a counterweight, the height of the wiper can be adjusted to adapt to tubular conveyor belts of different diameters.

[0005] The present invention adopts the following technical solution: An automatic adjusting wiper device for a tubular conveyor belt includes a wiper bracket disposed at the bottom of the tubular conveyor belt. A scraper is installed at the top of the scraper support, and the upper surface of the scraper is in contact with the bottom of the tubular conveyor belt; The scraper support is connected to steel wire ropes at both ends, and a counterweight is suspended at the other end of the steel wire ropes. The middle of the wire rope passes over the power transmission mechanism located above the tubular conveyor belt.

[0006] Furthermore, the upper surface of the scraper is arc-shaped, and the center of the arc is on the same vertical line as the center of the cross-section of the tubular conveyor belt.

[0007] Furthermore, the power transmission mechanism is located above the scraper.

[0008] Furthermore, a rain guide groove is provided below the scraper bracket.

[0009] Furthermore, the rain guide groove runs in the same direction as the wiper blade, and the width of the rain guide groove is greater than the thickness of the wiper blade.

[0010] Furthermore, the power transmission mechanism is a fixed pulley.

[0011] Furthermore, the top of the scraper bracket has a mounting groove.

[0012] Furthermore, guide rails are provided on both sides of the scraper bracket, and the scraper bracket is slidably connected to the guide rails.

[0013] The beneficial effects of this invention are: by using a power transmission mechanism in conjunction with a counterweight, the scraper automatically adjusts its height under the constant gravity provided by the counterweight, thus always adhering to the bottom of tubular conveyor belts of different diameters, achieving stable and reliable scraping of rainwater, effectively protecting the tubular conveyor belt, and having strong versatility for tubular conveyor belts of mainstream diameters. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a rear view of the present invention; Among them, 1. scraper bracket, 2. scraper, 3. wire rope, 4. power transmission mechanism, and 5. counterweight. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0016] Currently, the existing solution in the industry for rain protection of tubular conveyor belts is the "arc-shaped rain shield device," which is implemented as follows: Structural composition: The fixed bracket is made of ordinary 10# channel steel. The top of the fixed bracket is welded with an arc-shaped steel plate (the arc matches the outer diameter of the tubular conveyor belt). A canvas belt (thickness 3-5mm) is laid under the arc-shaped steel plate. The fixed bracket is fixed to the tubular conveyor belt idler group bracket with bolts.

[0017] Working principle: The top area of ​​the tubular conveyor belt is covered by an arc-shaped steel plate and a canvas belt to block rainwater falling vertically. The canvas belt has a certain degree of flexibility, which can reduce the hard friction with the surface of the tubular conveyor belt.

[0018] Manufacturing method: It is necessary to measure, cut and weld on-site according to the actual pipe diameter of each conveyor belt (such as φ500mm, φ600mm), which is a "one-to-one customized" manufacturing.

[0019] However, this method has poor versatility and lacks adjustability. Therefore, the automatic adjusting wiper device designed in this invention is adaptable to tubular conveyor belts of different diameters, improving versatility, avoiding repeated manufacturing, and the automatic adjusting wiper device of this invention can be finely adjusted to ensure long-term tight contact between the wiper component and the surface of the conveyor belt, avoiding gap leakage.

[0020] An automatic adjusting wiper device for tubular conveyor belts, such as Figure 1 As shown, it includes a scraper support 1 set at the bottom of the tubular conveyor belt; a scraper 2 is set at the top of the scraper support 1, and the upper surface of the scraper 2 is in contact with the bottom of the tubular conveyor belt; steel wire ropes 3 are connected to both ends of the scraper support 1, and a counterweight 5 is suspended at the other end of the steel wire ropes 3; the middle of the steel wire ropes 3 passes around the power transmission mechanism 4 located above the tubular conveyor belt.

[0021] During rainy weather, rainwater flows from the upper surface to the lower surface of the tubular conveyor belt. By changing the weight of the counterweight 5, the scraper 2 is kept in constant contact with the tubular conveyor belt. When the diameter of the arc of the scraper 2 is greater than the diameter of the circular cross-section of the tubular conveyor belt, the scraper 2 can remove rainwater from the bottom of the tubular conveyor belt. When the diameter of the arc of the scraper 2 is equal to the diameter of the circular cross-section of the tubular conveyor belt, the scraper 2 can remove rainwater from the bottom and sides of the tubular conveyor belt. When the diameter of the arc of the scraper 2 is less than the diameter of the circular cross-section of the tubular conveyor belt, the scraper 2 can remove rainwater from both sides of the tubular conveyor belt. This makes it suitable for tubular conveyor belts of different diameters.

[0022] The scraper bracket 1 is provided with bolt holes, and the scraper 2 can be installed on the scraper bracket 1 through bolts and bolt holes.

[0023] The scraper bracket 1 is suspended by the counterweight 5 and the wire rope 3, which provides continuous, stable and flexible positive pressure to the scraper 2, ensuring that the scraper 2 can always fit the bottom of the tubular conveyor belt and will not lose its rain-wiping effect due to slight jumping or wear of the tubular conveyor belt.

[0024] Using gravity as a power source eliminates the need for complex sensors, control systems, or external power sources (such as electricity or hydraulics), reducing manufacturing costs, failure rates, and maintenance difficulties. It is especially suitable for long-term stable operation in harsh industrial environments.

[0025] When scraper 2 wears down due to long-term use, counterweight 5 will automatically pull down the support via wire rope 3 to compensate for the height difference caused by wear, maintain contact between scraper 2 and tubular conveyor belt, and extend the effective maintenance cycle.

[0026] The upper surface of scraper 2 is arc-shaped, and the center of the arc is on the same vertical line as the center of the cross-section of the tubular conveyor belt.

[0027] The arc-shaped design allows the scraper 2 to perfectly match the bottom curved surface of the tubular conveyor belt, increasing the effective contact area and avoiding the problems of incomplete cleaning at both ends or excessive pressure in the middle that may occur with flat scrapers. This significantly improves the efficiency and cleanliness of rainwater removal. At the same time, due to the curvature matching, the pressure distribution of the scraper 2 on the tubular conveyor belt is more uniform, reducing localized wear and extending the service life of both the scraper 2 and the tubular conveyor belt itself.

[0028] The power transmission mechanism 4 is located above the scraper 2.

[0029] The power transmission mechanism 4 is positioned above the top of the scraper 2, so that the wire rope 3 generates a vertically upward pulling force on the scraper support 1, which is balanced with the downward counterweight force. This arrangement ensures that the scraper 2 is subjected to a normal pressure perpendicular to its working surface, resulting in the best rain-wiping effect, while avoiding lateral force that could cause the scraper 2 to wear unevenly or get stuck.

[0030] A rain guide groove is provided below the scraper bracket 1.

[0031] The rain guide can effectively collect rainwater scraped off the scraper 2 and guide it to a predetermined direction for discharge, preventing rainwater from dripping or splashing randomly, polluting the environment, corroding equipment foundations, or affecting the operation of other equipment, thus maintaining the cleanliness and safety of the work area.

[0032] The rain guide groove runs in the same direction as the scraper 2, and the width of the rain guide groove is greater than the thickness of the scraper 2.

[0033] The width of the rain channel is greater than the thickness of the scraper 2, which ensures that all the rainwater that is scraped off can be reliably caught. Even when the water flow is large, it can effectively prevent rainwater from overflowing out of the channel due to splashing or failure to be guided in time, thus improving the reliability of the drainage system.

[0034] The power transmission mechanism 4 is a fixed pulley.

[0035] The fixed pulley has a simple structure and low cost. It can efficiently convert the vertical downward gravity of the counterweight 5 into an upward lifting force on the scraper bracket 1. It also has low rolling friction, smooth operation, and low energy loss, ensuring the sensitivity and reliability of the adjustment system.

[0036] The top of the scraper bracket 1 has a mounting groove.

[0037] An installation slot is provided on the scraper bracket 1 to facilitate the replacement of the scraper 2.

[0038] The scraper bracket 1 is provided with guide rails on both sides, and the scraper bracket 1 is slidably connected to the guide rails.

[0039] The track serves as a guide to prevent the scraper 2 from shaking when it moves up and down.

[0040] The thickness of scraper 2 is 15-20cm.

[0041] The appropriate thickness ensures that the scraper 2 has sufficient structural strength and rigidity, making it less prone to deformation or breakage when subjected to counterweight pressure and continuous friction with the conveyor belt. At the same time, the thicker size also means a longer wear life, reducing replacement frequency and maintenance costs.

[0042] The radius of the arc on the upper surface of scraper 2 is 300-500cm.

[0043] This radius range covers common tubular conveyor belt diameter specifications, making the device highly versatile and providing an effective rain-wiping solution for most existing tubular conveyor systems.

[0044] The scraper 2 is made of wear-resistant material, and the scraper 2 in this invention can be a rubber plate.

[0045] Using wear-resistant materials (such as polyurethane and wear-resistant rubber) to manufacture scraper 2 greatly improves its durability, extends its replacement cycle, and increases its service life by more than three times. At the same time, high-quality wear-resistant materials usually also have a certain degree of elasticity, which can effectively scrape away rainwater while minimizing wear on the conveyor belt cover rubber, thus protecting the conveyor belt and solving the problems of "easy wear and rainwater accumulation" of existing waste canvas belts.

[0046] The working principle of this invention is as follows: When the tubular conveyor belt is working in rainy weather, the rain-wiping device is installed on the mounting frame below the tubular conveyor belt. The weight of the counterweight 5 is adjusted to move the scraper 2 up and down, adjusting the gap between the lower surface of the tubular conveyor belt and the upper surface of the scraper 2 until the upper surface of the scraper 2 contacts the lower surface of the tubular conveyor belt. When the tubular conveyor belt is running, the scraper 2 can scrape away the rainwater on the lower surface of the tubular conveyor belt. If the scraper 2 is damaged, it can be directly removed from the scraper bracket 1 for replacement.

[0047] In summary, firstly, this invention has strong versatility; one set of equipment can be adapted to tubular conveyor belts of mainstream diameters, eliminating the need for repeated manufacturing, reducing equipment costs by more than 30%, and shortening the manufacturing cycle. Secondly, the rain-wiping device of this invention is easy to maintain; the scraper blade 2 can be replaced individually (replacement time ≤ 15 minutes), eliminating the counterweight, and the scraper bracket 1 can be retracted without affecting the daily maintenance of the conveyor belt, reducing the maintenance frequency from once every 1-2 months to once every 6 months. Finally, this invention is economically efficient: the main materials are conventional channel steel, carbon steel, and rubber sheets, which are low-cost and readily available; and it can reduce the aging rate of tubular conveyor belts and motor energy consumption, resulting in an annual comprehensive cost saving of approximately 250,000 yuan per conveyor belt (including equipment costs, electricity costs, and maintenance costs). Therefore, this invention can achieve stable and reliable rainwater removal, effectively protecting tubular conveyor belts and reducing production costs.

Claims

1. An automatic adjusting wiper device for tubular conveyor belts, characterized in that, Includes a scraper support (1) installed at the bottom of the tubular conveyor belt; The scraper bracket (1) is provided with a scraper (2) at the top, and the upper surface of the scraper (2) is in contact with the bottom of the tubular conveyor belt. The scraper bracket (1) is connected to two ends of a wire rope (3), and a counterweight (5) is suspended at the other end of the wire rope (3). The steel wire rope (3) passes around the power transmission mechanism (4) located above the tubular conveyor belt in the middle.

2. The automatic adjusting wiper device for a tubular conveyor belt according to claim 1, characterized in that, The upper surface of the scraper (2) is arc-shaped, and the center of the arc is on the same vertical line as the center of the cross-section of the tubular conveyor belt.

3. An automatic adjusting wiper device for a tubular conveyor belt according to claim 2, characterized in that, The power transmission mechanism (4) is located above the scraper (2).

4. An automatic adjusting wiper device for a tubular conveyor belt according to claim 3, characterized in that, A rain guide groove is provided below the scraper bracket (1).

5. An automatic adjusting wiper device for a tubular conveyor belt according to claim 4, characterized in that, The rain guide groove runs in the same direction as the scraper (2), and the width of the rain guide groove is greater than the thickness of the scraper (2).

6. An automatic adjusting wiper device for a tubular conveyor belt according to claim 5, characterized in that, The power transmission mechanism (4) is a fixed pulley.

7. An automatic adjusting wiper device for a tubular conveyor belt according to claim 6, characterized in that, The top of the scraper bracket (1) has a mounting groove.

8. An automatic adjusting wiper device for a tubular conveyor belt according to claim 7, characterized in that, The scraper bracket (1) is provided with guide rails on both sides, and the scraper bracket (1) is slidably connected to the guide rails.

Images