Auxiliary device for coal transportation

Abstract

The invention belongs to the technical field of coal transportation, and particularly relates to a coal transportation auxiliary device which comprises a support, a storage hopper and a spiral conveying cylinder, the storage hopper and the spiral conveying cylinder are arranged on the top of the support, and the discharging end of the storage hopper communicates with the feeding end of the spiral conveying cylinder. The treatment mechanism comprises a filter plate which is slidably connected into the storage hopper and used for screening qualified materials, a crushing assembly for crushing the materials is arranged in the storage hopper and comprises a rotating rod rotationally connected into the storage hopper, and a crushing blade set is hinged to the surface of the rotating rod. The technical means that the storage hopper and the processing mechanism are matched is adopted, through the synergistic effect of opening and closing of a heating piece and a blade, the crushing degree of materials with different humidity is adjusted through opening and closing of the blade, the material adhesion foundation is reduced, the viscosity of wet coal is reduced through the heating piece, and material adhesion is restrained from the source; therefore, adhesion and accumulation of accumulated coal with high humidity on the inner wall of the storage hopper can be reduced, and follow-up use of equipment is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of coal transportation technology, specifically a coal transportation auxiliary device. Background Technology

[0002] Coal transportation often utilizes belt conveyors. These conveyors use a conveyor belt as both the traction and load-bearing component, transmitting power through the friction between the tensioned belt and the drive drum. They can continuously transport bulk materials or packaged goods. While the herringbone anti-slip belts of these conveyors provide some protection against slippage, the dead corners created by the herringbone pattern result in most of the coal sludge falling below the drive drum. To ensure the proper functioning of the belt conveyor, regular cleaning of the accumulated coal is necessary.

[0003] In the prior art, patent application CN118083526A discloses a conveying device for cleaning accumulated coal, which includes a base, a storage hopper, and a conveying assembly. The storage hopper is located on the base, and the conveying assembly includes a sealing cylinder and a central shaft. The sealing cylinder is inserted into the storage hopper, and a feed inlet is provided on the peripheral wall of the sealing cylinder. The central shaft is located inside the sealing cylinder and has spirally rising blades. The central shaft drives the blades to rotate, and the blades transport the material entering the sealing cylinder upwards. The upper end of the sealing cylinder has a discharge port, so that the upwardly transported material is discharged onto the conveyor belt. This conveying device for cleaning accumulated coal sends the accumulated coal below the drive drum into the storage hopper. The accumulated coal in the storage hopper enters the sealing cylinder through the feed inlet, and the rotating blades transport the accumulated coal upwards and discharge it onto the conveyor belt through the discharge port, thereby completing the coal cleaning operation and reducing the labor intensity and safety risks for workers.

[0004] Although the aforementioned patent documents can complete the cleaning of accumulated coal, the moisture content of the accumulated coal varies in actual operation. Although the storage hopper can collect the material, coal with higher moisture content is still prone to adhering and accumulating on the hopper wall. This not only affects the continuous feeding of the equipment, but also increases the subsequent cleaning costs. Summary of the Invention

[0005] The purpose of this invention is to provide a coal transportation auxiliary device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a coal transportation auxiliary device, comprising a support frame and a storage hopper and a screw conveyor on its top, wherein the discharge end of the storage hopper is connected to the feed end of the screw conveyor, a processing mechanism is provided inside the storage hopper, the processing mechanism includes a filter plate slidably connected inside the storage hopper for screening qualified materials, a crushing component for crushing materials is provided inside the storage hopper, the crushing component includes a rotating rod rotatably connected inside the storage hopper, a set of crushing blades is hinged to the surface of the rotating rod, a servo motor for driving the rotating rod to rotate is fixedly connected to one side of the storage hopper, a torque sensor is connected to the output shaft of the servo motor, the output shaft of the torque sensor is connected to the rotating rod, a heating element is installed inside the storage hopper, the heating element is electrically connected to the torque sensor, the torque sensor has a built-in signal processing module, the signal processing module is used to convert the detected torque value into an electrical signal transmitted by the heating element;

[0007] The storage hopper is equipped with a linkage mechanism for adjusting the angle of the crushing blade assembly, which facilitates the crushing of materials with different moisture content.

[0008] Preferably, the shredding blade assembly comprises a plurality of shredding blades.

[0009] Preferably, the linkage includes an arc-shaped rod assembly slidably connected within the rotating rod, the arc-shaped rod assembly corresponding to the crushing blade assembly, the arc-shaped rod assembly including several arc-shaped rods that abut against the filter plate, and an inclined rod assembly provided between the arc-shaped rod assembly and the crushing blade assembly, the inclined rod assembly including several inclined rods, one end of the inclined rod being fixedly connected to the surface of the arc-shaped rod, and the other end of the inclined rod being hinged to the crushing blade.

[0010] Preferably, the arc-shaped rods are arranged in pairs, and two magnetically repulsive electromagnetic blocks are installed inside the pairs of arc-shaped rods. The electromagnetic blocks are electrically connected to the torque sensor.

[0011] Preferably, the rotating rod has a sliding groove for the arc-shaped rod to slide.

[0012] Preferably, connecting blocks are fixedly connected to both sides of the arc-shaped rod, and a connecting groove for the connecting blocks to slide is opened in the rotating rod. A connecting spring is fixedly connected to the inner wall of the connecting groove, and the side of the connecting spring away from the inner wall of the connecting groove is fixedly connected to the connecting block.

[0013] Preferably, sliding blocks are fixedly connected to both sides of the filter plate, and a sliding groove is provided on the inner wall of the storage hopper for the sliding blocks to slide. A fixed block with the same magnetism as the sliding blocks is fixedly connected to the bottom of the inner wall of the sliding groove.

[0014] Preferably, an inclined tube is fixedly connected to one side of the storage hopper, and the inclined tube is connected to the feed end of the screw conveyor.

[0015] Preferably, a top block for sealing the inlet of the inclined tube is slidably connected inside the storage hopper, and the top block is fixedly connected to the filter plate, so that the top block moves synchronously through the filter plate.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention employs a combination of storage hopper and processing mechanism. Through the synergistic effect of heating element and blade opening and closing, the opening and closing of the blade is used to adjust the crushing degree of materials with different moisture content, reducing the basis of material adhesion. The heating element reduces the viscosity of wet coal, inhibiting material adhesion from the source. This helps to reduce the accumulation of coal with high moisture content on the inner wall of the storage hopper, thus facilitating continuous material feeding and making the equipment convenient to use.

[0018] 2. This invention employs a combination of a filter plate and a rotating rod. The rotation of the rotating rod drives the arc-shaped rod to rotate synchronously. The arc-shaped rod reciprocates and abuts against the filter plate, facilitating the up-and-down movement of the filter plate. During the up-and-down movement of the filter plate, the magnetic repulsion between the fixed block and the sliding block facilitates the reset of the filter plate. The up-and-down movement of the filter plate reduces clogging, thus facilitating its long-term use.

[0019] 3. The present invention adopts a technical means of cooperating filter plate and top block. The up and down movement of filter plate facilitates the synchronous movement of top block. The movement of top block facilitates the conveying of a certain amount of qualified material into the inner cavity of cylinder, thereby facilitating subsequent conveying and improving its working efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the storage hopper of the present invention;

[0022] Figure 3 This is a schematic diagram illustrating the internal structure of the storage hopper according to the present invention;

[0023] Figure 4 For the present invention Figure 3 The enlarged view at point A is shown below;

[0024] Figure 5 For the present invention Figure 3 The enlarged view at point B is shown below;

[0025] Figure 6 This is a cross-sectional view used in this invention to illustrate the internal structure of the rotating rod.

[0026] In the picture:

[0027] 1. Bracket;

[0028] 2. Storage hopper; 21. Grating plate; 22. Servo motor; 23. Rotating rod; 24. Crushing blade assembly; 25. Arc rod assembly; 26. Inclined rod assembly; 27. Electromagnetic block; 28. Moving trough;

[0029] 3. Torque sensor; 31. Filter plate; 32. Support rod; 33. Sliding block; 34. Sliding groove; 35. Fixing block; 36. Heating element; 37. Inclined tube; 38. Top block;

[0030] 4. Screw conveyor. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 6 As shown, this embodiment of the invention provides a coal transportation auxiliary device, including a storage hopper 2 at the top of a support 1 and a spiral conveyor cylinder 4. The opening of the storage hopper 2 faces upward, and the cross-sectional area of ​​the storage hopper 2 gradually decreases from top to bottom so that the material can collect at the bottom of the storage hopper 2. The spiral conveyor cylinder 4 includes a cylinder body, and spirally rising blades are rotatably connected to the inner cavity of the cylinder body. The material entering the cylinder body is transported upward by the rotation of the blades. A discharge pipe is provided on the surface of the cylinder body, and the discharge pipe is located above the conveyor belt so that the material transported upward to the discharge pipe is discharged and falls onto the conveyor belt, thereby completing the cleaning operation of the accumulated coal. The accumulated coal below the drive drum is sent back to the conveyor belt for transportation. A fixed frame is fixedly connected to the top of the support 1, and a drive motor for driving the blades to rotate is fixedly connected to the top of the fixed frame.

[0033] Furthermore, when the drive motor rotates the spiral blades, the spiral surface of the blades generates axial thrust and upward lift on the coal accumulated inside the cylinder. On the one hand, this overcomes the weight of the coal itself, transporting it from the lower part of the cylinder (feed end) to the upper part (discharge pipe end). On the other hand, through the blades' contact design with the cylinder wall, it scrapes off the wet coal adhering to the cylinder wall, reducing material residue during the conveying process.

[0034] A grid plate 21 is installed on the top of the storage hopper 2. The grid plate 21 is used to filter oversized materials.

[0035] Furthermore, the grid layout of the grating plate 21 can disperse the falling coal into multiple fine streams, avoiding local stress overload of the storage hopper 2 caused by concentrated impact at a single point. In addition, the grating plate 21 can intercept materials with a diameter exceeding the design threshold, preventing them from subsequently abrading the conveyor belt, thereby helping to reduce the equipment failure rate.

[0036] The inner cavity of the storage hopper 2 is equipped with a processing mechanism, which includes a rotating rod 23 rotatably connected to the inner cavity of the storage hopper 2. A crushing blade assembly 24 is hinged to the surface of the rotating rod 23. The crushing blade assembly 24 includes several crushing blades, which can rotate flexibly around the hinge point. The blades have a serrated design. The inner cavity of the rotating rod 23 is slidably connected to an arc-shaped rod assembly 25 corresponding to the crushing blade assembly 24. The arc-shaped rod assembly 25 includes several arc-shaped rods. Among them, two magnetically repulsive electromagnetic blocks 27 are installed inside two relatively sliding arc-shaped rods. The electromagnetic blocks 27 are installed in pairs inside the relatively sliding arc-shaped rods. The electromagnetic block 27 uses magnetic repulsion to drive the arc-shaped rods to slide relative to each other. The inner cavity of the rotating rod 23 is provided with a moving groove 28 for the relative sliding of the paired arc-shaped rods. Connecting blocks are fixedly connected to both sides of the arc-shaped rods. The inner cavity of the rotating rod 23 is provided with a connecting groove for the connecting blocks to slide. A connecting spring is fixedly connected to the inner wall of the connecting groove. The side of the connecting spring away from the inner wall of the connecting groove is fixedly connected to the connecting block. An inclined rod group 26 is provided between the arc-shaped rod group 25 and the crushing blade group 24. The inclined rod group 26 includes several inclined rods. One end of the inclined rod is fixedly connected to the surface of the arc-shaped rod, and the other end of the inclined rod is hinged to the crushing blade.

[0037] A servo motor 22 for driving the rotating rod 23 to rotate is fixedly connected to one side of the storage hopper 2. The output shaft of the servo motor 22 is connected to a torque sensor 3 through a coupling. The output shaft of the torque sensor 3 is connected to the rotating rod 23 through a coupling. The torque sensor 3 is used to detect the torque output from the servo motor 22 to the rotating rod 23 in real time. A heating element 36 is installed in the inner cavity of the storage hopper 2. The heating element 36 is embedded in the storage hopper 2 and uses far-infrared heating elements, which can quickly increase the local temperature inside the hopper. The electromagnetic block 27 and the heating element 36 are electrically connected to the torque sensor 3. The torque sensor 3 has a built-in signal processing module to convert the detected torque value into an electrical signal. After the electromagnetic block 27 receives the signal, the power is turned on. After the heating element 36 receives the signal, it controls the start / stop and power output. It starts when the torque exceeds the threshold and shuts down when it is below the threshold.

[0038] Furthermore, when the moisture content of the coal is normal, the servo motor 22 is started, and its output shaft drives the torque sensor 3 to rotate via a coupling. The torque sensor 3 then drives the rotating rod 23 to rotate synchronously via the coupling. When the rotating rod 23 rotates, the surface-hinged crushing blade assembly 24 moves in a circular motion, cutting and impacting the coal falling into the storage hopper 2. When the moisture content of the coal is high, the resistance of the crushing blade assembly 24 increases, causing the load on the rotating rod 23 to rise. The torque sensor 3 detects in real time that the torque value exceeds the set threshold and sends a signal to the electromagnetic block 27. Through electromagnetic repulsion, the relative arc-shaped rod is pushed outward along the inner cavity of the rotating rod 23. The sliding of the arc-shaped rod drives the inclined rod to open outward, and the inclined rod pushes... The crushing blades rotate around the hinge point, increasing the opening angle. This expands the coverage area and enhances the cutting force, allowing for rapid crushing of large materials or scraping off adhering wet coal. If the torque continues to rise, indicating severe wet coal adhesion, the torque sensor 3 simultaneously activates the heating element 36. This raises the temperature of the inner wall of the storage hopper 2 to reduce the viscosity of the wet coal, decreasing its adhesion to the blades and hopper wall, thus assisting in clearing blockages. After the large materials are crushed and the wet coal adhesion is reduced, the blade resistance decreases. The torque sensor 3 detects that the torque value has returned to the normal threshold and immediately disconnects the power supply to the electromagnetic block 27. The arc rod resets under the action of gravity and the connecting spring, and the inclined rod pulls the crushing blades back to their original position. Then, the heating element 36 is turned off to prevent overheating and changes in coal quality.

[0039] A filter plate 31 is slidably connected to the inner wall of the neck of the storage hopper 2. Sliding blocks 33 are fixedly connected to both sides of the filter plate 31. A sliding groove 34 is provided on the inner wall of the storage hopper 2 for the sliding blocks 33 to slide. A fixing block 35 with the same magnetism as the sliding block 33 is fixedly connected to the bottom of the inner wall of the sliding groove 34. Several abutting rods 32 that abut against the arc-shaped rod group 25 are fixedly connected to the top of the filter plate 31.

[0040] Furthermore, when the moisture content of the coal is normal, the filter plate 31 moves up and down by abutting the arc-shaped rod and the push rod 32. The up and down movement of the filter plate 31 facilitates the screening of qualified materials, which are then discharged. During the up and down movement of the filter plate 31, the magnetic repulsion between the fixed block 35 and the sliding block 33 facilitates the reset of the filter plate 31. When the moisture content of the coal is high, the sliding of the arc-shaped rod facilitates pushing the filter plate 31 to a lower position. The magnetic repulsion between the fixed block 35 and the sliding block 33 facilitates the reset of the filter plate 31, thereby facilitating better filtration of qualified materials.

[0041] An inclined tube 37 corresponding to the feed inlet of the cylinder is fixedly connected to one side of the neck of the storage hopper 2. A top block 38 for sealing the inclined tube 37 is slidably connected to the inner cavity of the neck of the storage hopper 2. The top block 38 is fixedly connected to the filter plate 31.

[0042] Furthermore, the up-and-down movement of the filter plate 31 facilitates the synchronous movement of the top block 38, and the movement of the top block 38 facilitates the conveying of a fixed amount of qualified material into the inner cavity of the cylinder, thereby facilitating subsequent conveying and improving its working efficiency.

[0043] Working Principle: Before use, a comprehensive inspection of all components of the equipment is conducted. After the inspection is completed, the worker sends the accumulated coal under the drive drum into the storage hopper 2. The grating plate 21 facilitates the screening of oversized materials, which fall to the top of the support 1. When the moisture content of the accumulated coal is normal, the servo motor 22 is started. Its output shaft drives the torque sensor 3 to rotate through the coupling. The torque sensor 3 then drives the rotating rod 23 to rotate synchronously through the coupling. When the rotating rod 23 rotates, the surface-hinged crushing blade assembly 24 moves in a circular motion, cutting and impacting the accumulated coal falling into the storage hopper 2. When the moisture content of the accumulated coal is high, the resistance of the crushing blade assembly 24 increases, causing the load on the rotating rod 23 to rise. The torque sensor 3 detects in real time that the torque value exceeds the set threshold and sends a signal to the electromagnetic block 27, which then controls the flow of the material. The repulsive force pushes the opposing arc-shaped rod to slide outward along the inner cavity of the rotating rod 23. The sliding of the arc-shaped rod causes the inclined rod to open outward. The inclined rod pushes the crushing blade to rotate around the hinge point, increasing the opening angle. At this time, the coverage area of ​​the crushing blade expands and the cutting force is enhanced, which can quickly crush large pieces of material or scrape off the adhering wet coal. If the torque continues to increase, the wet coal is severely adhered. The torque sensor 3 synchronously starts the heating element 36, which reduces the viscosity of the wet coal by increasing the temperature of the inner wall of the storage hopper 2, reducing its adhesion to the blade and the hopper wall, and assisting the blade to clear blockage. After the large pieces of material are crushed and the wet coal adhesion is reduced, the blade resistance decreases. The torque sensor 3 detects that the torque value has returned to the normal threshold, and then disconnects the power supply of the electromagnetic block 27. The arc-shaped rod resets under the action of gravity and the connecting spring, and the inclined rod pulls the crushing blade to reset. Then the heating element 36 is turned off to avoid overheating and changes in coal quality.

[0044] When the moisture content of the coal is normal, the filter plate 31 moves up and down by abutting the arc-shaped rod and the push rod 32. The up and down movement of the filter plate 31 facilitates the screening of qualified materials, which are then discharged. During the up and down movement of the filter plate 31, the magnetic repulsion between the fixed block 35 and the sliding block 33 helps the filter plate 31 to return to its original position. When the moisture content of the coal is high, the sliding of the arc-shaped rod helps push the filter plate 31 to a lower position. The magnetic repulsion between the fixed block 35 and the sliding block 33 helps the filter plate 31 to return to its original position, thus facilitating better filtration of qualified materials.

[0045] The up-and-down movement of the filter plate 31 facilitates the synchronous movement of the top block 38. The movement of the top block 38 facilitates the conveying of a fixed amount of qualified material through the inclined tube 37 into the inner cavity of the cylinder, thereby facilitating subsequent conveying and improving its working efficiency.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal transportation auxiliary device, comprising a support (1) and a storage hopper (2) on its top and a screw conveyor (4), wherein the discharge end of the storage hopper (2) is connected to the feed end of the screw conveyor (4), characterized in that: The storage hopper (2) is equipped with a processing mechanism, which includes a filter plate (31) slidably connected to the storage hopper (2) for screening qualified materials. The storage hopper (2) is equipped with a crushing component for crushing materials. The crushing component includes a rotating rod (23) rotatably connected to the storage hopper (2). A crushing blade assembly (24) is hinged to the surface of the rotating rod (23). A servo motor (22) for driving the rotating rod (23) to rotate is fixedly connected to one side of the storage hopper (2). A torque sensor (3) is connected to the output shaft of the servo motor (22). The output shaft of the torque sensor (3) is connected to the rotating rod (23). A heating element (36) is installed in the storage hopper (2). The heating element (36) is electrically connected to the torque sensor (3). The storage hopper (2) is equipped with a linkage component that adjusts the angle of the crushing blade assembly (24), thereby facilitating the crushing of materials with different moisture content.

2. The coal transportation auxiliary device according to claim 1, characterized in that: The shredder assembly (24) includes several shredder blades.

3. The coal transportation auxiliary device according to claim 2, characterized in that: The linkage includes an arc-shaped rod assembly (25) slidably connected within the rotating rod (23). The arc-shaped rod assembly (25) corresponds to the crushing blade assembly (24). The arc-shaped rod assembly (25) includes several arc-shaped rods that abut against the filter plate (31). An inclined rod assembly (26) is provided between the arc-shaped rod assembly (25) and the crushing blade assembly (24). The inclined rod assembly (26) includes several inclined rods. One end of the inclined rod is fixedly connected to the surface of the arc-shaped rod, and the other end of the inclined rod is hinged to the crushing blade.

4. The coal transportation auxiliary device according to claim 3, characterized in that: The arc-shaped rods are arranged in pairs, and two magnetically repulsive electromagnetic blocks (27) are installed inside the pairs of arc-shaped rods. The electromagnetic blocks (27) are electrically connected to the torque sensor (3).

5. The coal transportation auxiliary device according to claim 4, characterized in that: The rotating rod (23) has a sliding groove (28) for the arc-shaped rod to slide.

6. The coal transportation auxiliary device according to claim 5, characterized in that: Both sides of the arc-shaped rod are fixedly connected to connecting blocks. The rotating rod (23) has a connecting groove for the connecting blocks to slide in. A connecting spring is fixedly connected to the inner wall of the connecting groove. The side of the connecting spring away from the inner wall of the connecting groove is fixedly connected to the connecting block.

7. The coal transportation auxiliary device according to claim 1, characterized in that: Both sides of the filter plate (31) are fixedly connected to sliding blocks (33), and the inner wall of the storage hopper (2) is provided with a sliding groove (34) for the sliding blocks (33) to slide. The bottom of the inner wall of the sliding groove (34) is fixedly connected to a fixing block (35) with the same magnetism as the sliding block (33).

8. The coal transportation auxiliary device according to claim 1, characterized in that: An inclined tube (37) is fixedly connected to one side of the storage hopper (2), and the inclined tube (37) is connected to the feed end of the screw conveyor (4).

9. The coal transportation auxiliary device according to claim 8, characterized in that: The storage hopper (2) is slidably connected to a top block (38) for sealing the inlet of the inclined tube (37). The top block (38) is fixedly connected to the filter plate (31), and the top block (38) moves synchronously through the filter plate (31).

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