Movable coal return belt conveyor and coal return system

Abstract

The utility model relates to a movable coal returning belt conveyor and a coal returning system, the movable coal returning belt conveyor comprises a rack, conveying rollers are arranged at the two ends of the rack, and a conveying belt is arranged between the conveying rollers; the machine frame is connected with a driving support, a driving roller and a turnabout roller are arranged on the driving support, and the conveying belt passes through the conveying roller, the turnabout roller and the driving roller in a closed loop mode. The driving support is arranged in the middle of the machine frame, and walking wheels are arranged at the bottom of the driving support. By arranging the walking wheels on the movable coal return belt conveyor, the belt conveyor can be flexibly transferred in a movable mode, and therefore the belt conveyor can be flexibly transferred to a place where operation is needed. Compared with temporary installation of a traditional coal return scraper, the ground piled coal can be effectively and continuously returned to the washing system, and the operation efficiency is improved with a large handling capacity.

Description

Technical Field

[0001] The present application relates to the technical field of coal preparation equipment, and in particular to a movable coal return belt conveyor and a coal return system. Background Art

[0002] There are many equipments in the process flow of coal preparation plant. Any failure of any equipment may lead to shutdown and maintenance. In order not to affect the production of mine, the raw coal is sometimes dropped to the ground after mining. After the equipment is restored, the piled raw coal will be returned to the washing system.

[0003] In addition, when the mine output is insufficient, it is sometimes necessary to purchase some raw coal for washing to ensure the amount of commercial coal. This also requires the purchased coal to be piled on the ground and then fed into the existing washing system.

[0004] The existing method of returning the piled coal to the washing system includes temporarily installing a coal return scraper. However, the conventional coal return scraper has a small processing capacity and discontinuous coal feeding, which causes great difficulties in returning the raw coal to the washing system. Utility Model Content

[0005] The purpose of this application is to provide a movable coal return belt conveyor and coal return system, which can help to effectively return the ground piled coal to the washing system, and at the same time create conditions for the supply of purchased coal to the washing system.

[0006] In order to achieve the above-mentioned object, in a first aspect, the utility model provides a movable coal return belt conveyor, comprising: a frame, conveying rollers are arranged at both ends of the frame, and a conveying belt is arranged between the conveying rollers;

[0007] The frame is connected to a driving bracket, on which a driving roller and a redirecting roller are arranged, and the conveyor belt is closed-looped and passes between the conveyor roller, the redirecting roller and the driving roller;

[0008] The driving bracket is arranged in the middle of the frame, and a walking wheel is arranged at the bottom of the driving bracket.

[0009] In an optional embodiment, a wheel axle column is connected to the bottom of the driving bracket, a belt conveyor wheel axle is connected to the bottom end of the wheel axle column, and the traveling wheel is installed on both ends of the belt conveyor wheel axle through positioning pins.

[0010] In an optional embodiment, the frame includes a front frame and a rear frame, and the conveying roller includes a head roller and a tail roller, and the head roller and the tail roller are respectively arranged at the ends of the front frame and the rear frame.

[0011] In an optional embodiment, one end of the front frame is connected to the driving bracket, and the other end is connected to a head bracket, and the head roller is mounted on the head bracket;

[0012] One end of the rear frame is connected to the driving bracket, and the other end is connected to a tail bracket, and the tail roller is mounted on the tail bracket.

[0013] In an optional embodiment, the frame is provided with load-bearing rollers and return rollers for supporting the conveyor belt, the load-bearing rollers are arranged on the top of the frame and are evenly distributed, the return rollers are arranged below the load-bearing rollers and are evenly distributed, and the return rollers are staggered with the load-bearing rollers in the conveying direction.

[0014] In an optional embodiment, the redirecting roller includes a first redirecting roller and a second redirecting roller, the first redirecting roller and the second redirecting roller are arranged on both sides of the driving bracket, and the driving bracket is provided with a first redirecting roller bracket and a second redirecting roller bracket.

[0015] In an optional embodiment, the driving roller is arranged below the redirecting roller, and a driving roller bracket is arranged on the driving bracket;

[0016] A driving motor is installed on the driving bracket, and the driving roller is connected to the output end of the driving motor.

[0017] In an optional embodiment, the front frame includes a front top frame located at the top, the rear frame includes a rear top frame located at the top, the front top frame and the rear top frame are located on the same plane and are relatively perpendicular to the installation direction of the driving bracket;

[0018] The front frame includes a front bottom frame located at the bottom, the rear frame includes a rear bottom frame located at the bottom, the front bottom frame is tilted from far to near relative to the driving bracket, and the rear bottom frame is tilted from far to near relative to the driving bracket;

[0019] Vertical support columns and oblique support columns are arranged between the front top frame and the front bottom frame, and between the rear top frame and the rear bottom frame.

[0020] In an optional embodiment, the length of the front frame is smaller than the length of the rear frame, and a material guide plate is provided at the outer end of the rear frame, and the material guide plate is installed above the conveyor belt.

[0021] In the second aspect, the utility model provides a coal return system, including a coal return hopper, a discharge chute, a washing belt conveyor and a movable coal return belt conveyor. The movable coal return belt conveyor is obliquely arranged between the coal return hopper and the discharge chute. The fallen raw coal passes through the coal return hopper and falls to the conveyor belt. After being lifted by the conveyor belt, it enters the washing belt through the discharge chute.

[0022] By setting walking wheels on the movable coal return belt conveyor, it is possible to flexibly transfer the belt conveyor in a movable form, so that the belt conveyor can be flexibly transferred to the location where it needs to be operated. Compared with the temporary installation of traditional coal return scrapers, it can effectively and continuously return the ground piled coal to the washing system, improving the operating efficiency with a larger processing capacity.

[0023] The conveyor rollers at both ends of the frame can ensure the reliable operation of the conveyor belt. The drive bracket located in the middle of the frame connected to the frame can provide good support for the frame and functional equipment, while facilitating the installation of the entire machine and enhancing the equipment's adaptability to the environment.

[0024] The driving roller and the redirecting roller arranged on the driving bracket, combined with the conveying rollers at both ends of the frame, can provide an overall operating basis for the conveyor belt, so that the conveyor belt can operate stably and reliably in a state of passing through the above-mentioned rollers in a closed loop and under the driving rotation of the driving roller.

[0025] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the main structure of the movable coal return belt conveyor in this application;

[0028] Figure 2 This is a schematic diagram of the top view of the movable coal return belt conveyor in this application;

[0029] Figure 3 This is a schematic diagram of the main structure of the driving bracket in this application;

[0030] Figure 4 It is a side view structural schematic diagram of the driving bracket in this application;

[0031] Figure 5This is a schematic diagram of the structure of the coal return system in this application.

[0032] icon:

[0033] 1-frame; 11-front frame; 11a-head support; 11b-front top frame; 11c-front bottom frame; 12-rear frame; 12a-tail support; 12b-rear top frame; 12c-rear bottom frame;

[0034] 13-vertical support column; 14-oblique support column; 15-material guide plate;

[0035] 2-driving bracket; 21-driving roller; 22-redirecting roller; 22a-first redirecting roller; 22b-second redirecting roller; 23-axle column; 24-belt conveyor axle; 25-locating pin; 26a-first redirecting roller bracket; 26b-second redirecting roller bracket; 27-driving roller bracket; 28-driving motor;

[0036] 3- conveying roller; 31- head roller; 32- tail roller;

[0037] 4- conveyor belt; 41- load-bearing roller; 42- return roller;

[0038] 5-Travel wheels;

[0039] 6-Return coal hopper;

[0040] 7-Discharging chute;

[0041] 8- Enter the belt washing machine. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The movable coal return belt conveyor in the present application is mainly used to transport raw coal that has piled up on the ground when the coal preparation equipment is in a faulty state or when purchasing coal from outside. The coal pile on the ground is returned to the washing system through the movable coal return belt conveyor to improve the defects of the existing coal return working conditions, such as small processing capacity of the coal return scraper and discontinuous coal supply.

[0046] See also Figure 1-Figure 2 The movable coal return belt conveyor in the utility model has a main structure including a frame 1, conveying rollers 3 are arranged at both ends of the frame 1, and a conveying belt 4 is arranged between the conveying rollers 3.

[0047] The conveyor belt 4 is mainly used for carrying and conveying the ground pile of coal lifted by a forklift, and the conveying roller 3 is used for driving the conveyor belt 4 to operate.

[0048] A driving bracket 2 is connected to the frame 1 and is mainly used to install a driving device, a driving roller 21 and a redirecting roller 22, so as to facilitate continuous operation of the conveyor belt 4 driven by the driving device.

[0049] The redirecting roller 22 is mainly used to maintain the tension of the conveyor belt 4, so that the conveyor belt 4 is maintained at a relatively ideal tightness. By passing the conveyor belt 4 around the conveyor roller 3, the redirecting roller 22 and the driving roller 21 in a closed loop, the conveyor belt 4 can be kept in a stable and continuous operation state, forming a reliable conveying state.

[0050] In addition to maintaining the installation of necessary components, the drive bracket 2 also mainly supports the entire frame 1. The drive bracket 2 is arranged in the middle of the frame 1 to support the middle of the frame 1. At the same time, the mode of supporting the middle drive bracket 2 is adopted to facilitate the installation of the equipment and increase the adaptability of the equipment to the environment.

[0051] From the perspective of mobility, a travel wheel 5 is provided at the bottom of the driving bracket 2, which can flexibly move the position of the belt conveyor and enhance its applicability within the factory.

[0052] The movable coal return belt conveyor in the utility model can be moved to a position close to the washing belt conveyor 8 by the walking wheel 5, and then the belt conveyor is tilted and fixed. Through the inclined conveying of the conveyor belt 4, the piled coal on the ground shoveled by the forklift is lifted and returned to the washing system.

[0053] In one specific embodiment, a wheel axle column 23 is connected to the bottom of the driving bracket 2, and a belt conveyor axle 24 is connected to the bottom end of the wheel axle column 23. The wheel axle column 23 and the belt conveyor axle 24 constitute the installation structure of the walking wheel 5.

[0054] Specifically, the walking wheel 5 is a supporting steel wheel, which is connected and installed on both ends of the belt conveyor axle 24 through positioning pins 25. The setting of the positioning pins 25 can ensure the stable and reliable installation of the supporting steel wheel on the belt conveyor axle 24. Furthermore, L-shaped positioning pins 25 are provided on both sides of each supporting steel wheel, which can form an effective limit for the supporting steel wheel and prevent the supporting steel wheel from deviating on the belt conveyor axle 24.

[0055] The frame 1 in this embodiment includes a front frame 11 and a rear frame 12. The front frame 11, the driving bracket 2 and the rear bracket together form the main frame of the belt conveyor, which is convenient for the installation of various functional components. The conveying roller 3 includes a head roller 31 and a tail roller 32. The head roller 31 and the tail roller 32 are respectively arranged at the ends of the front frame 11 and the rear frame 12, which can ensure the arrangement span of the conveyor belt 4 and facilitate the formation of a continuous and stable conveying volume.

[0056] In terms of the composition of the main frame, one end of the front frame 11, i.e. the inner end, is connected to the driving bracket 2, and the other end, i.e. the outer end, is connected to the head bracket 11a, and the head roller 31 is installed on the head bracket 11a;

[0057] One end, i.e., the inner end, of the rear frame 12 is connected to the driving bracket 2, and the other end, i.e., the outer end, is connected to a tail bracket 12a, on which the tail drum 32 is mounted.

[0058] The above-mentioned structural form can ensure the structural stability of the main frame and ensure that the conveying roller 3 is stably and reliably installed on the frame 1.

[0059] From the perspective of reliable installation of the conveyor belt 4, the frame 1 is provided with load-bearing rollers 41 and return rollers 42 for supporting the conveyor belt 4. The load-bearing rollers 41 are arranged on the top of the frame 1 and are evenly distributed, and the return rollers 42 are arranged below the load-bearing rollers 41 and are evenly distributed. In order to maintain the balance of the support of the conveyor belt 4 by the load-bearing rollers 41 and the return rollers 42 in the conveying length direction, the return rollers 42 are staggered with the load-bearing rollers 41 in the conveying direction, forming an up-and-down staggered support for the conveyor belt 4, thereby ensuring the stability and reliability of the conveyor belt 4 during operation.

[0060] Combination Figure 3-Figure 4The redirecting roller 22 includes a first redirecting roller 22a and a second redirecting roller 22b. The first redirecting roller 22a and the second redirecting roller 22b are arranged on both sides of the driving bracket 2. By arranging the two redirecting rollers 22 on both sides of the driving bracket 2, the tension of the conveyor belt 4 can be ensured in the form of redirection under the drive of the intermediate driving roller 21.

[0061] The driving bracket 2 is provided with a first redirecting roller bracket 26a and a second redirecting roller bracket 26b. The first redirecting roller 22a is mounted on the first redirecting roller bracket 26a, and the second redirecting roller 22b is mounted on the second redirecting roller bracket 26b, so that the redirecting roller 22 is effectively installed.

[0062] In order to better control the tension and slack of the conveyor belt 4, the driving roller 21 is arranged below the redirecting roller 22. The driving motor 28 as a driving device is installed on the driving bracket 2. At the same time, a driving roller bracket 27 is connected to the driving bracket 2 to facilitate the installation of the driving roller 21. The driving roller 21 is connected to the output end of the driving motor 28, realizing the integration of the driving motor 28 and the driving roller 21. The structure is compact and easy to inspect and maintain.

[0063] During operation, the conveyor belt 4 goes up from the head roller 31 to the tail roller 32, then changes direction and goes down to the first redirecting roller 22a, then passes through the driving roller 21, and then passes through the second redirecting roller 22b, and finally reaches the tail roller 32. After the vulcanized joint, the conveyor belt 4 is closed and passes around the above rollers to transport materials.

[0064] From the perspective of the branch structure of the frame 1, the front frame 11 includes a front top frame 11b located at the top, and the rear frame 12 includes a rear top frame 12b located at the top. The front top frame 11b and the rear top frame 12b are located on the same plane and are relatively perpendicular to the installation direction of the driving bracket 2. Specifically, the front top frame 11b, the rear top frame 12b and the top of the driving bracket 2 constitute a conveying plane.

[0065] The front frame 11 includes a front bottom frame 11c located at the bottom, and the rear frame 12 includes a rear bottom frame 12c located at the bottom. The front bottom frame 11c is tilted from far to near relative to the driving bracket 2, and the rear bottom frame 12c is tilted from far to near relative to the driving bracket 2. This arrangement constitutes a structure in which the bottom frames of the frames 1 on both sides are tilted toward the middle driving bracket 2. Further combined with the vertical support columns 13 and the oblique support columns 14 arranged between the front top frame 11b and the front bottom frame 11c, and between the rear top frame 12b and the rear bottom frame 12c, the side supports and the bottom support of the front frame 11 and the rear frame 12 can be constituted, thereby reducing the arrangement of the legs of the ordinary belt conveyor, saving the space occupied by the equipment, and facilitating the overall movement of the equipment.

[0066] In this embodiment, the vertical inclination angle of the front bottom frame 11c and the rear bottom frame 12c relative to the driving bracket 2 is 2°, and can be adjusted according to actual conditions to meet various installation requirements.

[0067] Furthermore, a guide plate 15 is provided at the outer end of the rear frame 12. The guide plate 15 is specifically installed at the end of the tail side and is located above the conveyor belt 4, which can play a good role in guiding the loading of materials. Since the guide plate 15 is arranged on the side of the tail, according to the lever balance principle, the installation position of the driving bracket 2 is slightly close to the head roller 31 side, which is achieved by making the length of the front frame 11 smaller than the length of the rear frame 12, so as to facilitate the force balance of the belt conveyor during the transfer process.

[0068] The driving roller 21 is arranged on the driving bracket 2 and can be away from the head roller 31 and the tail roller 32, thereby reducing the failure rate of the equipment.

[0069] During the preparation and processing, the front frame 11, the rear frame 12 and the driving bracket 2 of the belt conveyor, the front top frame 11b, the rear top frame 12b, the front bottom frame 11c and the rear bottom frame 12c all include horizontal braces, vertical braces and diagonal braces assembly processing, and can be processed and manufactured using welded pipes, angle steels or angle irons.

[0070] The frame 1 is designed as a structure with two sides inclined toward the middle driving bracket 2 (the inclination angle is 2 degrees), and the belt conveyor guide plate 15 is installed near the tail of the machine.

[0071] The design length of the movable coal return belt conveyor is 26.5m (the design length should not exceed 30m), the belt width is 800mm, the belt speed is 2.0m / s, the electric drum power is 55KW, and it can meet the feeding capacity of 500t / h.

[0072] See also Figure 5 The utility model also provides a coal return system, including a coal return hopper 6, a discharge chute 7, a washing belt conveyor 8 and the movable coal return belt conveyor mentioned above. The movable coal return belt conveyor is tilted between the coal return hopper 6 and the discharge chute 7. The fallen raw coal falls through the coal return hopper 6 to the conveyor belt 4, and returns to the washing belt conveyor 8 through the discharge chute 7 after being lifted by the conveyor belt 4.

[0073] During specific use, after the movable coal return belt conveyor moves to the coal return position of the site through the bottom walking wheel 5, the angle is adjusted, the fixed walking wheel 5 is locked, the tail roller 32 bracket is supported by the ground, and the head bracket 11a is overlapped on the upper part of the unloading chute 7. The forklift lifts the fallen raw coal and feeds it into the coal return hopper 6, which falls into the tail of the belt conveyor, and is transported to the belt conveyor unloading chute 7 by the mobile belt conveyor, and is fed into the system's raw coal washing belt conveyor 8 to complete the washing, completing the return of the fallen coal pile to the washing system.

[0074] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0075] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A movable coal return belt conveyor, characterized in that: include: A frame, wherein conveying rollers are arranged at both ends of the frame, and a conveying belt is arranged between the conveying rollers; The frame is connected to a driving bracket, on which a driving roller and a redirecting roller are arranged, and the conveyor belt is closed-looped and passes between the conveyor roller, the redirecting roller and the driving roller; The driving bracket is arranged in the middle of the frame, and a walking wheel is arranged at the bottom of the driving bracket.

2. The movable coal return belt conveyor according to claim 1, characterized in that: The bottom of the driving bracket is connected with a wheel axle column, the bottom end of the wheel axle column is connected with a belt conveyor wheel axle, and the walking wheel is connected and installed at both ends of the belt conveyor wheel axle through positioning pins.

3. The movable coal return belt conveyor according to claim 1, characterized in that: The frame includes a front frame and a rear frame, and the conveying roller includes a head roller and a tail roller, and the head roller and the tail roller are respectively arranged at the ends of the front frame and the rear frame.

4. The movable coal return belt conveyor according to claim 3 is characterized in that: One end of the front frame is connected to the driving bracket, and the other end is connected to the head bracket, and the head roller is installed on the head bracket; One end of the rear frame is connected to the driving bracket, and the other end is connected to a tail bracket, and the tail roller is mounted on the tail bracket.

5. The movable coal return belt conveyor according to claim 2, characterized in that: The frame is provided with load-bearing rollers and return rollers for supporting the conveyor belt. The load-bearing rollers are arranged on the top of the frame and are evenly distributed, and the return rollers are arranged below the load-bearing rollers and are evenly distributed. The return rollers are staggered with the load-bearing rollers in the conveying direction.

6. The movable coal return belt conveyor according to claim 2, characterized in that: The redirecting roller comprises a first redirecting roller and a second redirecting roller, the first redirecting roller and the second redirecting roller are arranged on both sides of the driving bracket, and the driving bracket is provided with a first redirecting roller bracket and a second redirecting roller bracket.

7. The movable coal return belt conveyor according to claim 2, characterized in that: The driving roller is arranged below the redirecting roller, and a driving roller bracket is arranged on the driving bracket; A driving motor is installed on the driving bracket, and the driving roller is connected to the output end of the driving motor.

8. The movable coal return belt conveyor according to claim 3, characterized in that: The front frame includes a front top frame located at the top, and the rear frame includes a rear top frame located at the top, and the front top frame and the rear top frame are located on the same plane and are relatively perpendicular to the installation direction of the driving bracket; The front frame includes a front bottom frame located at the bottom, the rear frame includes a rear bottom frame located at the bottom, the front bottom frame is tilted from far to near relative to the driving bracket, and the rear bottom frame is tilted from far to near relative to the driving bracket; Vertical support columns and oblique support columns are arranged between the front top frame and the front bottom frame, and between the rear top frame and the rear bottom frame.

9. The movable coal return belt conveyor according to claim 3, characterized in that: The length of the front frame is smaller than that of the rear frame, and a material guide plate is arranged at the outer end of the rear frame, and the material guide plate is installed above the conveyor belt.

10. A coal return system, characterized in that: It comprises a return coal hopper, a discharge chute, a washing belt conveyor and the movable return coal belt conveyor described in any one of claims 1 to 9, wherein the movable return coal belt conveyor is obliquely arranged between the return coal hopper and the discharge chute, and the fallen raw coal falls to the conveyor belt through the return coal hopper, and then enters the washing belt conveyor through the discharge chute after being lifted by the conveyor belt.

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