A belt conveyor for a metallurgical coking coal preparation system

Abstract

The utility model discloses a kind of for metallurgical coking coal preparation system's belt conveyor, belong to belt conveyor technical field, conveyor includes support, conveying belt and adjusting mechanism, adjusting mechanism is driven and moves fixed block connected with driving roller through the transmission cooperation of swing handle, transmission rod, bevel gear and screw rod, and utilize limit block to prevent deviation, realize the convenient adjustment of tension of conveying belt, conveyor also includes cleaning mechanism, cleaning mechanism is scraped by scraper and by ratchet and pawl constitutes self-locking device, stably adheres the surface of conveying belt, and adhered coal dust is scraped and collected in collection box.The utility model solves the problem that conveying belt tension is inconvenient and easily deviated, realizes stable and reliable adjustment and operation, simultaneously can automatically recycle adhered coal dust, reduces raw material waste and prevents environmental pollution, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor technology, and in particular to a belt conveyor for a metallurgical coking coal preparation system. Background Technology

[0002] Belt conveyors, as a type of continuous conveying equipment, play an indispensable role in the coal preparation system of metallurgical coking plants, responsible for transporting coal from one location to another stably and efficiently. The conveyor belt, as the component that bears and transmits traction force, directly determines the efficiency and reliability of the entire conveying system.

[0003] To ensure the conveyor belt does not slip during operation and can effectively transmit driving force, an appropriate preload must be applied, i.e., the tension of the conveyor belt must be adjusted. Proper conveyor belt tension is a key prerequisite for ensuring stable operation and preventing belt deviation.

[0004] Existing belt conveyors use manual screw adjusting devices to adjust tension. These devices are typically located on both sides of the frame, and operators need to rotate the adjusting screws on both sides to move the tensioning roller. However, in practice, it is very difficult to ensure that the adjustment strokes of the screws on both sides are completely consistent manually; even slight differences in adjustment can cause the roller axis to be non-perpendicular to the conveyor centerline.

[0005] This non-perpendicular state directly leads to uneven stress on the conveyor belt during operation, making it highly prone to deviation. Once the conveyor belt deviates, it not only wears down the edges, reducing its service life, but also causes coal spillage in the metallurgical coking coal preparation system. This wastes valuable raw materials, generates a large amount of dust, pollutes the production environment, and affects the normal operation of the production line. At the same time, this repetitive and inefficient adjustment process increases the labor intensity of workers and the maintenance time of equipment.

[0006] Therefore, this utility model proposes a belt conveyor for a metallurgical coking coal preparation system to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems existing in the belt conveyor used in the metallurgical coking coal preparation system, such as inconvenient belt tension adjustment and difficulty in synchronizing the adjustment on both sides, which leads to belt deviation and thus material waste and environmental pollution, this utility model aims to provide a belt conveyor with an improved structure that can effectively solve the above problems for the metallurgical coking coal preparation system.

[0008] This utility model provides a belt conveyor for a metallurgical coking coal preparation system, comprising: a support frame, a conveyor belt circulating on the support frame, and a drive roller and a driven roller rotatably connected to the support frame. The belt conveyor also includes an adjustment mechanism.

[0009] The adjustment mechanism enables synchronous and precise adjustment of the conveyor belt tension. The structure includes a mounting plate fixedly connected to the bracket and a fixed block slidably connected to the mounting plate. The drive roller is rotatably mounted on the fixed block.

[0010] Furthermore, the power input end of the adjustment mechanism is a rocker handle, which is fixedly connected to one end of the transmission rod. The other end of the transmission rod is connected to the lead screw through a pair of meshing bevel gears. The lead screw is rotatably connected to the mounting plate and has a slider threaded onto it. The slider is connected to the connecting block through a connecting rod, and the connecting block is fixedly connected to the fixed block. At the same time, to ensure the linear motion accuracy during the adjustment process, a limit block is also fixed on the mounting plate. The fixed block slides between the limit blocks. This structural combination allows the position of the drive roller to be adjusted synchronously and stably by operating the rocker handle at a single point.

[0011] Preferably, the belt conveyor also includes a drive system, which includes a motor fixed on a support and a control cabinet electrically connected to the motor. The output end of the motor is connected to the drive roller through two drive wheels and a drive belt to provide stable power for the cyclic operation of the conveyor belt.

[0012] Preferably, to protect the drive system and adjustment mechanism from dust corrosion, a protective cover and a protective box are also provided. The protective cover is placed outside the transmission belt and transmission wheel to form an isolation, while the protective box is placed at the meshing connection between the transmission rod and the bevel gear to protect the transmission node.

[0013] Preferably, the belt conveyor also includes a cleaning mechanism that can clean the surface of the conveyor belt during equipment operation. The cleaning mechanism includes a rotating rod rotatably connected to the support via a fixed ring, and a scraper for directly scraping the surface of the conveyor belt is fixed on the rotating rod.

[0014] In a further preferred embodiment, to ensure that the scraper can continuously and stably adhere to the conveyor belt, the cleaning mechanism also includes a self-locking device. The self-locking device consists of a ratchet fixed on the rotating rod and a pawl pivotally connected to the bracket. Under the elastic force of the spring, the pawl elastically abuts against the teeth of the ratchet, thereby locking the position of the rotating rod in one direction and ensuring the scraping pressure.

[0015] Preferably, to facilitate adjustment or reset of the cleaning mechanism, a pin can be detachably provided on the pawl. By pulling out the pin, the pawl can be disengaged from the ratchet. At the same time, the cleaning mechanism also includes a collection box located below the scraper and fixed to the bracket, which is specifically used to collect the scraped coal dust to achieve resource recovery.

[0016] Preferably, to further enhance the stability of the conveying process, the bottom of the conveyor belt is also provided with additional support by auxiliary rollers that are rotatably connected to the support, so as to reduce the sagging deformation of the conveyor belt when it is under load. The two sides of the conveyor belt are also provided with fixing plates fixed to the support to form side guards, which effectively prevent materials from falling from the sides during transportation.

[0017] Preferably, in order to achieve smooth loading of materials, a chute is also provided on the support. The outlet of the chute is located above the conveyor belt. The inclined structural design helps to buffer the speed of the falling materials and reduce the impact on the conveyor belt.

[0018] This utility model has the following beneficial effects: 1. This utility model solves the problems of inconvenient belt tension adjustment, unstable adjustment process and easy belt deviation in the prior art by setting an adjustment mechanism composed of a crank handle, transmission rod, bevel gear, lead screw and slider, and using a limit block to limit the position of the drive roller. It achieves convenient and labor-saving adjustment operation, stable and reliable transmission, and effectively prevents belt deviation, thereby improving the reliability of equipment operation.

[0019] 2. This utility model solves the problem in the prior art that coal dust adhering to the surface of the conveyor belt is difficult to clean online, resulting in raw material waste and environmental pollution, by setting up a cleaning mechanism with a scraper and using a self-locking device composed of ratchet, pawl and spring to make the scraper stably adhere to the surface of the conveyor belt. It realizes the automatic scraping and collection of coal dust during equipment operation, reduces raw material loss, improves resource utilization, and avoids dust pollution.

[0020] 3. This utility model solves the problem that key components are prone to wear or failure due to the intrusion of foreign matter in dusty environments such as metallurgy and coking by adding protective covers and protective boxes to the outside of the key transmission components of the adjustment mechanism and drive system. It achieves effective dust prevention and protection of the internal precision structure, thereby reducing the equipment failure rate and extending the service life of the whole machine. Attached Figure Description

[0021] Figure 1 This is a perspective view of a belt conveyor for a metallurgical coking coal preparation system proposed in this utility model. Figure 2 This is a partial structural diagram of a belt conveyor for a metallurgical coking coal preparation system proposed in this utility model. Figure 3 This is a partial structural exploded view of the adjusting mechanism of a belt conveyor for a metallurgical coking coal preparation system proposed in this utility model. Figure 4 This is a partial structural exploded view of a cleaning mechanism for a belt conveyor used in a metallurgical coking coal preparation system, as proposed in this utility model.

[0022] Legend: 1. Bracket; 2. Adjustment mechanism; 21. Mounting plate; 22. Protective cover; 23. Drive wheel; 24. Drive belt; 25. Drive roller; 26. Fixing block; 27. Limiting block; 28. Drive rod; 29. ​​Bevel gear; 210. Lead screw; 211. Connecting rod; 212. Connecting block; 213. Handle; 214. Protective box; 215. Motor; 216. Driven roller; 217. Auxiliary roller; 218. Slider; 219. Conveyor belt; 3. Cleaning mechanism; 31. Fixing ring; 32. Rotating rod; 33. Ratchet; 34. Pin; 35. Pad; 36. Scraper; 37. Spring; 38. Collection box; 4. Chute; 5. Control cabinet; 6. Fixing plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0024] Please refer to Figures 1 to 4 This utility model provides a belt conveyor 219 for a metallurgical coking coal preparation system, which aims to solve the problems of inconvenient tension adjustment of the belt 219 in the prior art, easy deviation during adjustment, and difficulty in efficiently cleaning and recycling materials adhering to the surface of the belt.

[0025] like Figure 1 and Figure 2As shown, the belt conveyor for a metallurgical coking coal preparation system includes a support 1 as the overall mounting base, and a conveyor belt 219 that circulates on the support 1. The conveyor belt 219 is supported by a drive roller 25 and a driven roller 216 rotatably connected to the support 1. The belt conveyor also includes an adjustment mechanism 2 for adjusting the tension of the conveyor belt 219. The adjustment mechanism 2 can achieve precise adjustment of the position of the drive roller 25. Specifically, the adjustment mechanism 2 includes a mounting plate 21 fixedly connected to the support 1. The drive roller 25 is rotatably mounted on a fixed block 26, and the fixed block 26 is slidably connected to the mounting plate 21. To achieve adjustment of the position of the fixed block 26, the adjustment mechanism 2 also includes a crank 213. One end of the transmission rod 28 is fixedly connected to the transmission rod 28. The other end of the transmission rod 28 is connected to the lead screw 210 through a pair of meshing bevel gears 29. The lead screw 210 is rotatably connected to the mounting plate 21. A slider 218 is threaded onto the lead screw 210. The slider 218 is connected to the connecting block 212 through the connecting rod 211. The connecting block 212 is fixedly connected to the fixed block 26, thereby converting the rotation of the crank handle 213 into the linear movement of the fixed block 26. To ensure the stability and directional accuracy of the fixed block 26 during the movement, a limit block 27 is also fixed on the mounting plate 21. The fixed block 26 is slidably engaged between the limit blocks 27, thereby ensuring that the fixed block 26 can only reciprocate along a preset trajectory.

[0026] To achieve efficient driving and protection of conveyor belt 219, the belt conveyor also includes a drive system and a corresponding protective structure. Please refer to [reference needed]. Figure 1 and Figure 2 The drive system includes a motor 215 fixed on a bracket 1 and a control cabinet 5 electrically connected to the motor 215. The output end of the motor 215 is connected to the drive roller 25 via two drive wheels 23 and a drive belt 24. When the control cabinet 5 starts the motor 215, the power is transmitted to the drive roller 25 via the drive wheels 23 and the drive belt 24, thereby driving the conveyor belt 219 to run in a cycle. To prevent dust or debris from interfering with or wearing the transmission components, a protective cover 22 and a protective box 214 are also provided. The protective cover 22 covers the outside of the drive belt 24 and the drive wheels 23 to isolate the external environment, while the protective box 214 covers the connection between the transmission rod 28 and the bevel gear 29 to protect the precision gear meshing part in the adjustment mechanism 2. This combination of protective measures ensures that the drive system and the adjustment mechanism 2 can work stably for a long time in the dusty metallurgical coking environment.

[0027] As a preferred embodiment, in order to achieve online cleaning of coal dust adhering to the surface of the conveyor belt 219, refer to Figure 1 and Figure 4The belt conveyor also includes a cleaning mechanism 3, which includes a rotating rod 32 rotatably connected to the support 1 via a fixed ring 31. A scraper 36 for scraping the surface of the conveyor belt 219 is fixed on the rotating rod 32. The scraper 36 is positioned to fit closely to the outer surface of the conveyor belt 219.

[0028] As a further optimization of the cleaning mechanism 3, in order to ensure that the scraper 36 can be stably pressed against the conveyor belt 219, the cleaning mechanism 3 also includes a self-locking device. The self-locking device includes a ratchet 33 fixed on the rotating rod 32 and a pawl 35 pivotally connected to the bracket 1. Under the elastic force of the spring 37, the pawl 35 elastically abuts against the teeth of the ratchet 33, thereby forming a one-way lock on the rotating rod 32 and preventing the scraper 36 from deviating from the working position due to force during the scraping process.

[0029] As an improvement to the ease of operation of the self-locking device, the pawl 35 is also provided with a pin 34 for disengaging the pawl 35 from the ratchet 33. When it is necessary to adjust or reset the scraper 36, the locking state of the pawl 35 can be easily released by pulling out the pin 34. At the same time, in order to collect the scraped coal dust, the cleaning mechanism 3 also includes a collection box 38 fixed to the bracket 1 and located below the scraper 36.

[0030] To further ensure the stability of the conveying process, the bottom of the conveyor belt 219 is supported by auxiliary rollers 217 that are rotatably connected to the support 1. The auxiliary rollers 217 reduce the sagging deformation of the conveyor belt 219 when carrying heavy objects. At the same time, both sides of the conveyor belt 219 are provided with fixing plates 6 fixed to the support 1 along the length direction to prevent coal blocks from falling from both sides during the conveying process. In addition, the support 1 is also provided with a chute 4 for feeding material onto the conveyor belt 219. The outlet of the chute 4 is located above the conveyor belt 219 to achieve stable loading of materials.

[0031] Working principle: When the tension of the conveyor belt 219 needs to be adjusted before the equipment is started, the operator turns the crank handle 213. The crank handle 213 drives a pair of bevel gears 29 to mesh and rotate through the transmission rod 28, thereby driving the lead screw 210 connected to the bevel gears 29 to rotate. Since the slider 218 is threadedly engaged with the lead screw 210, the rotation of the lead screw 210 will drive the slider 218 to move linearly along the axial direction of the lead screw 210. The slider 218 then pushes the fixed block 26 to move through the connecting rod 211 and the connecting block 212. Since the active roller 25 is rotatably mounted on the fixed block 26, the movement of the fixed block 26 changes the position of the active roller 25, thereby conveniently realizing the adjustment of the tension of the conveyor belt 219. During the entire adjustment process, the fixed block 26 always slides between the limit blocks 27 fixed on the mounting plate 21. The limit structure ensures that the fixed block 26 can only move along the preset trajectory, effectively preventing deviation during the adjustment process and ensuring the running stability of the conveyor belt 219. When the equipment is running, the control cabinet 5 starts the motor 215. The motor 215 transmits power to the drive roller 25 through the transmission belt 24 and the transmission wheel 23, driving the conveyor belt 219 to circulate. The driven roller 216 and the auxiliary roller 217 jointly support the smooth operation of the conveyor belt 219. Coal blocks fall from the chute 4 onto the conveyor belt 219, and the fixing plates 6 on both sides prevent them from falling off. During the conveying process, in order to clean the adhering coal dust, the rotating rod 32 of the cleaning mechanism 3 can be rotated to make the scraper 36 close to the surface of the conveyor belt 219. At this time, the ratchet 3... 3 rotates accordingly, and the pawl 35 engages and locks with the ratchet 33 under the action of the spring 37, ensuring that the scraper 36 can continuously and stably apply pressure. The coal dust adhering to the conveyor belt 219 is scraped off when passing through the scraper 36 and falls into the collection box 38 below, realizing the recovery of raw materials and reducing environmental pollution. When it is necessary to reset the scraper 36, the pin 34 is pulled out to separate the pawl 35 from the ratchet 33. The key connection points of the drive part and the adjustment mechanism 2 of the entire system are protected by the protective cover 22 and the protective box 214.

Claims

1. A belt conveyor for a metallurgical coking coal preparation system, comprising a support (1) and a conveyor belt (219) circulating on the support (1), the conveyor belt (219) being supported by a drive roller (25) and a driven roller (216) rotatably connected to the support (1); Its features are, It also includes an adjustment mechanism (2) for adjusting the tension of the conveyor belt (219). The adjustment mechanism (2) includes a mounting plate (21) fixedly connected to the bracket (1). The drive roller (25) is rotatably mounted on a fixed block (26). The fixed block (26) is slidably connected to the mounting plate (21). The adjustment mechanism (2) also includes a rocker (213). The rocker (213) is fixedly connected to one end of a transmission rod (28). The other end of the transmission rod (28) is connected to a lead screw (210) through a pair of meshing bevel gears (29). The lead screw (210) is rotatably connected to the mounting plate (21). A slider (218) is threaded onto the lead screw (210). The slider (218) is connected to a connecting block (212) through a connecting rod (211). The connecting block (212) is fixedly connected to the fixed block (26).

2. A belt conveyor for a metallurgical coking coal preparation system according to claim 1, characterized in that, It also includes a drive system for driving the conveyor belt (219) to run, the drive system including a motor (215) fixed on the bracket (1) and a control cabinet (5) electrically connected to the motor (215), the output end of the motor (215) being connected to the drive roller (25) via two drive wheels (23) and a drive belt (24).

3. A belt conveyor for a metallurgical coking coal preparation system according to claim 2, characterized in that, It also includes a protective cover (22) and a protective box (214) for protecting the adjustment mechanism (2) and the drive system. A limit block (27) is also fixed on the mounting plate (21). The fixing block (26) is slidably engaged between the limit blocks (27). The protective cover (22) covers the outside of the transmission belt (24) and the transmission wheel (23). The protective box (214) covers the connection between the transmission rod (28) and the bevel gear (29).

4. A belt conveyor for a metallurgical coking coal preparation system according to claim 1, characterized in that, It also includes a cleaning mechanism (3) for cleaning the conveyor belt (219), the cleaning mechanism (3) including a rotating rod (32) rotatably connected to the bracket (1) via a fixed ring (31), and a scraper (36) for scraping the surface of the conveyor belt (219) is fixed on the rotating rod (32).

5. A belt conveyor for a metallurgical coking coal preparation system according to claim 4, characterized in that, The cleaning mechanism (3) also includes a self-locking device, which includes a ratchet (33) fixed on the rotating rod (32) and a pawl (35) pivotally connected to the bracket (1). The pawl (35) elastically abuts against the teeth of the ratchet (33) under the elastic force of the spring (37).

6. A belt conveyor for a metallurgical coking coal preparation system according to claim 5, characterized in that, The pawl (35) may also be provided with a pin (34) for disengaging the pawl (35) from the ratchet (33), and the cleaning mechanism (3) further includes a collection box (38) fixed to the bracket (1) and located below the scraper (36).

7. A belt conveyor for a metallurgical coking coal preparation system according to claim 1, characterized in that, The bottom of the conveyor belt (219) is also supported by an auxiliary roller (217) rotatably connected to the bracket (1), and both sides of the conveyor belt (219) are provided with fixing plates (6) fixed to the bracket (1) along the length direction.

8. A belt conveyor for a metallurgical coking coal preparation system according to claim 1, characterized in that, The support (1) is also provided with a chute (4) for feeding material onto the conveyor belt (219), and the outlet of the chute (4) is located above the conveyor belt (219).

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