Coal pipe blockage clearing device

Abstract

The present disclosure relates to a coal drop pipe blockage clearing device, comprising: a blockage clearing mechanism, comprising a scraping assembly and a first rotating shaft, the first rotating shaft is parallel to the coal drop surface and rotatably connected to the coal drop pipe, the scraping assembly is arranged in the coal drop pipe and fixedly connected to the first rotating shaft; and a driving mechanism, which is drivingly connected to the first rotating shaft and is used to drive the first rotating shaft and the scraping assembly to rotate, so that the scraping assembly can scrape the material adhered to the coal drop surface, so as to avoid the continuous accumulation of coal materials causing blockage and affecting the production and transportation of coal and coal powder.

Description

Technical Field

[0001] The present disclosure relates to the technical field of coal drop pipe cleaning, and in particular, to a coal drop pipe blockage clearing device. Background Art

[0002] In the coal transportation link, the coal drop pipe is a key equipment for coal transportation, integrating the functions of receiving, guiding, and buffering. When the traditional square coal drop pipe is used to transport pulverized coal and wet sticky coal, the coal powder is easy to adhere to the coal drop pipe, which is prone to coal blockage. The area of ​​the coal drop pipe that is prone to coal blockage is generally located at the end above the guide trough. At this time, in order to reduce the impact of coal on the conveyor belt below, the coal drop pipe will have a significant angle change in this section to reduce the speed of the coal flow. The coal is easy to adhere in the nearby area of ​​the coal drop pipe here, forming siltation and slowly causing blockage. The large amount of material spilled after the coal drop pipe is blocked will affect the production and transportation of coal and coal powder. Summary of the invention

[0003] The purpose of the present invention is to provide a coal drop pipe blockage clearing device, which can clean the places where coal is easily accumulated in the coal drop pipe to avoid blockage caused by continuous accumulation of coal.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a coal drop pipe blockage clearing device, comprising: a blockage clearing mechanism, comprising a scraping assembly and a first rotating shaft, the first rotating shaft is parallel to the coal drop surface of the coal drop pipe and is rotatably connected to the coal drop pipe, the scraping assembly is arranged in the coal drop pipe and is fixedly connected to the first rotating shaft; and,

[0005] The driving mechanism is drivingly connected to the first rotating shaft and is used to drive the first rotating shaft and the scraping assembly to rotate, so that the scraping assembly can scrape the materials adhered to the coal falling surface.

[0006] Optionally, the scraping assembly includes an actuator arm and a scraping plate, one end of the actuator arm is fixedly connected to the first rotating shaft, and the other end of the actuator arm is fixedly connected to the scraping plate.

[0007] Optionally, the actuator arm is configured as a telescopic arm for adjusting the distance between the scraping plate and the first rotating shaft.

[0008] Optionally, the actuator arm includes an upper arm, a sleeve and a spring, the upper arm is formed with a connecting head, the spring is sleeved on the upper arm, the upper arm is slidably inserted in the sleeve, the connecting head is in the sleeve and a gap is formed between the connecting head and the inner wall of the sleeve for circulating materials, one end of the spring is connected to the upper arm, the other end of the spring abuts against the sleeve, one end of the upper arm facing away from the sleeve is fixedly connected to the first rotating shaft, and one end of the sleeve facing away from the upper arm is fixedly connected to the shovel plate.

[0009] Optionally, when the scraping plate contacts the coal falling surface, an angle between the scraping surface of the scraping plate and the coal falling surface is 0° to 30°.

[0010] Optionally, the coal drop pipe clearing device further comprises a limiting mechanism, which comprises a limiting plate connected to the first rotating shaft and two travel switches, wherein the two travel switches are respectively arranged on the pipe wall of the coal drop pipe for limiting the rotation angle of the first rotating shaft.

[0011] Optionally, the coal drop pipe blockage clearing device further comprises a detection mechanism, wherein the detection mechanism is arranged on the pipe wall of the coal drop pipe and is used to detect the material flow thickness of the material in the coal drop pipe.

[0012] Optionally, the detection mechanism is configured as a radar level meter.

[0013] Optionally, the coal drop pipe blockage clearing device further includes a control mechanism, and the driving mechanism, the limiting mechanism and the detecting mechanism are all connected to the control mechanism by signal.

[0014] Optionally, the driving mechanism includes a driving motor and a reducer, the output end of the driving motor is drivingly connected to the input end of the reducer, and the output end of the reducer is connected to the first rotating shaft for driving the first rotating shaft to pivot around its own axis.

[0015] Through the above technical scheme, the coal drop pipe blockage clearing device includes a blockage clearing mechanism and a driving mechanism, the blockage clearing mechanism includes a scraping assembly and a first rotating shaft, wherein the first rotating shaft is parallel to the coal drop surface and is rotatably connected to the coal drop pipe, the scraping assembly is arranged in the coal drop pipe and is fixedly connected to the first rotating shaft, and the driving mechanism is drivingly connected to the first rotating shaft, and is used to drive the first rotating shaft and the scraping assembly to rotate together, so that the scraping assembly can scrape the material adhered to the coal drop surface to avoid the continuous accumulation of coal in the coal drop pipe to cause blockage.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of a coal drop pipe blockage clearing device provided in an exemplary embodiment of the present disclosure;

[0019] Figure 2 The coal drop pipe blockage clearing device provided in the exemplary embodiment of the present disclosure is different from Figure 1Schematic diagram of the structure of the perspective;

[0020] Figure 3 yes Figure 2 AA section view in;

[0021] Figure 4 is a schematic structural diagram of a driving mechanism and a blockage clearing structure provided in an exemplary embodiment of the present disclosure;

[0022] Figure 5 is a schematic structural diagram of an execution arm provided in an exemplary embodiment of the present disclosure;

[0023] Figure 6 is a schematic structural diagram of an upper arm provided in an exemplary embodiment of the present disclosure.

[0024] Description of Reference Numerals

[0025] 10-coal drop pipe; 20-driving mechanism; 21-driving motor; 22-reducer; 30-radar material level machine; 40-limiting mechanism; 41-travel switch; 42-limiting plate; 50-blocking mechanism; 51-first rotating shaft; 52-actuator arm; 521-upper arm; 5211-connecting sleeve; 5212-guide rod; 5213-connecting head; 522-sleeve; 523-spring; 53-shovel plate; 60-seat bearing. DETAILED DESCRIPTION

[0026] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0027] In the present disclosure, unless otherwise stated, "inside" and "outside" refer to the inside and outside of the outline of a component or structure itself. "First" and "second" are used to distinguish one element from another and do not have order or importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0028] refer to Figures 1 to 6 As shown, the present disclosure provides a device for clearing a coal drop pipe 10, including a clearing mechanism 50, including a scraping assembly and a first rotating shaft 51, the first rotating shaft 51 is parallel to the coal drop surface of the coal drop pipe and is rotatably connected to the coal drop pipe 10, the scraping assembly is arranged in the coal drop pipe 10 and is fixedly connected to the first rotating shaft 51; and a driving mechanism 20, which is drivingly connected to the first rotating shaft 51, and is used to drive the first rotating shaft 51 and the scraping assembly to rotate, so that the scraping assembly can scrape the material adhered to the coal drop surface.

[0029] In the above embodiment, the blockage clearing mechanism 50 includes a scraping assembly and a first rotating shaft 51, the first rotating shaft 51 is rotatably connected to the coal dropping pipe 10 and is parallel to the coal dropping surface, the scraping assembly is arranged in the coal dropping pipe 10 and is fixedly connected to the first rotating shaft 51, the driving mechanism 20 drives the first rotating shaft 51 to rotate, and the first rotating shaft 51 drives the scraping assembly to rotate around the first rotating shaft 51, so that the scraping assembly can scrape the material adhered to the coal dropping surface of the coal dropping pipe 10 to avoid the material from continuously accumulating on the coal dropping surface and causing the coal dropping pipe 10 to be blocked. In addition, the material in the coal dropping pipe 10 includes but is not limited to coal.

[0030] refer to Figure 3 and Figure 4 As shown, in some embodiments, the scraping assembly includes an actuator arm 52 and a scraping plate 53 , one end of the actuator arm 52 is fixedly connected to the first rotating shaft 51 , and the other end of the actuator arm 52 is fixedly connected to the scraping plate 53 .

[0031] In the above embodiment, one end of the actuator arm 52 is fixedly connected to the first rotating shaft 51, and the other end of the actuator arm 52 is fixedly connected to the shoveling plate 53. The driving mechanism 20 drives the first rotating shaft 51 to rotate around its own axis, so that the actuator arm 52 fixedly connected to the first rotating shaft 51 drives the shoveling plate 53 to rotate around the first rotating shaft 51. During the rotation of the shoveling plate 53 around the first rotating shaft 51, it can contact the material deposited on the coal dropping surface and shovel away the deposited material, thereby avoiding blockage in the coal dropping pipe 10.

[0032] Furthermore, the scraper plate 53 may be configured in any form, for example, the scraper plate 53 may be configured as a rectangular strip.

[0033] refer to Figure 3 As shown, the inner wall surface of the coal dropping pipe 10 in contact with the scraping plate 53 is the coal dropping surface.

[0034] refer to Figure 1 , Figure 3 as well as Figure 4 As shown, in some embodiments, the first rotating shaft 51 is arranged parallel to the coal dropping surface, passes through the coal dropping pipe 10 and is rotatably connected to the pipe walls of the two opposite coal dropping pipes 10 through the seat bearing 60. Two actuator arms 52 are arranged at intervals along the rotation direction of the first rotating shaft 51, and the shoveling plate 53 is connected to the actuator arms 52 through two actuator arms 52 arranged at intervals. The first rotating shaft 51, the two actuator arms 52 and the shoveling plate 53 form a quadrilateral frame, and a space for coal to pass through is formed between the frames, which can reduce the influence of the clearing mechanism 50 on the flow of coal and coal flow.

[0035] In some embodiments, the actuator arm 52 is configured as a telescopic arm to adjust the distance between the scraping plate 53 and the first rotating shaft 51 .

[0036] refer to Figure 3 As shown, at this time, the rotation direction of the actuator arm 52 is the direction indicated by the arrow in the figure. During the rotation of the shovel plate 53 around the first rotating shaft 51, the shovel plate 53 can directly scrape the bonded material, or the shovel plate 53 first abuts against the coal falling surface of the coal falling pipe 10, and then moves along the coal falling surface to scrape the bonded material. When the actuator arm 52 is a telescopic arm, the shovel plate 53 makes initial contact with the coal falling surface, that is, when the actuator arm 52 is in position b, the length of the actuator arm 52 at this time is the original length of the actuator arm 52. As the first rotating shaft 51 rotates, the shovel plate 53 will move on the coal falling surface to scrape the bonded falling material, and the length of the actuator arm 52 will continue to shrink. When the length of the actuator arm 52 shrinks to the extreme, that is, refer to Figure 3 When the actuator arm 52 is at position c, the actuator arm 52 will no longer retract, and then begin to extend continuously until it returns to the initial length of the actuator arm 52, at which time the actuator arm 52 is at position d. When the actuator arm 52 is a telescopic arm, the area that the actuator arm 52 drives the shovel plate 53 to scrape is the area corresponding to the theoretical running trajectory L2 of the actuator arm 52 on the coal dropping surface of the coal dropping pipe; when the actuator arm 52 is non-retractable, the theoretical running trajectory of the shovel plate 53 is L1. Compared with the non-retractable actuator arm 52, the telescopic actuator arm 52 abuts against the coal dropping surface and scrapes the material adhered to the coal dropping surface of the coal dropping pipe 10 for a longer travel distance, and can clean a larger area.

[0037] refer to Figures 3 to 5 As shown, in some embodiments, the actuator arm 52 includes an upper arm 521, a sleeve 522 and a spring 523. The upper arm 521 is formed with a connecting head 5213. The spring 523 is slidably inserted on the upper arm 521. The upper arm 521 is sleeved in the sleeve 522. The connecting head 5213 is in the sleeve 522 and forms a gap for circulating materials between the connecting head and the inner wall of the sleeve 522. One end of the spring 523 is connected to the upper arm 521, and the other end of the spring 523 abuts against the sleeve 522. The end of the upper arm 521 facing away from the sleeve 522 is fixedly connected to the first rotating shaft 51, and the end of the sleeve 522 facing away from the upper arm 521 is fixedly connected to the shovel plate 53.

[0038] refer to Figure 6As shown, in some embodiments, the upper arm 521 also includes a connecting sleeve 5211 and a guide rod 5212, the connecting sleeve 5211 is fixedly connected to the first rotating shaft 51, one end of the guide rod 5212 is detachably connected to the connecting sleeve 5211, and a connecting head 5213 is formed at the end of the guide rod 5212 away from the connecting sleeve 5211, and the spring 523 is sleeved on the guide rod 5212, and the upper arm 521 is sleeved in the sleeve 522, one end of the spring 523 abuts on the connecting sleeve 5211, and the other end of the spring 523 abuts on the sleeve 522. When the shovel plate 53 moves on the coal falling surface to shrink the actuator arm 52, the sleeve 522 of the actuator arm 52 moves along the guide rod 5212 of the upper arm 521 and compresses the spring 523, and the spring 523 abuts on the end of the sleeve 522 away from the shovel plate 53, so that the shovel plate 53 can be tightly attached to the coal falling surface.

[0039] refer to Figure 3 As shown, in some embodiments, the first rotating shaft 51 drives the scraping plate 53 to rotate, so that when the scraping plate 53 contacts the coal falling surface, the angle between the scraping surface of the scraping plate 53 and the coal falling surface is 0° to 30°.

[0040] In the above embodiment, reference Figure 3 As shown, when the shoveling plate 53 just contacts the coal falling surface, the angle between the shoveling surface of the shoveling plate 53 and the coal falling surface is α, and the angle range of α is 0° to 30°. For example, the angle α can be 10°, 20° or 30° to facilitate the movement of the shoveling plate 53 on the coal falling surface.

[0041] refer to Figure 1 As shown, in some embodiments, the coal drop pipe 10 blockage clearing device also includes a limiting mechanism 40, which includes a limiting plate 42 connected to the first rotating shaft 51 and two travel switches 41. The two travel switches 41 are respectively arranged on the pipe wall of the coal drop pipe 10, and are used to limit the rotation angle of the first rotating shaft.

[0042] In the above embodiment, two travel switches 41 can be respectively arranged at the side wall of the coal drop pipe 10 without the inner lining plate, the first rotating shaft 51 is located between the two travel switches 41, the two travel switches 41 and the driving mechanism 20 can be connected to the controller signal, the limit plate 42 rotates under the drive of the first rotating shaft 51, when the limit plate 42 approaches any one of the two travel switches 41, the travel switch 41 is triggered, and the travel switch 41 transmits the trigger signal to the controller, and the controller changes the motion state of the driving mechanism 20 according to the trigger signal transmitted by the travel switch 41, so that the first rotating shaft 51 is reversed, and then the execution arm 52 and the shovel plate 53 rotate in the opposite direction of the previous motion. The two travel switches 41 cooperate with the limit plate 42 connected to the first rotating shaft 51, and can limit the rotation angle of the execution arm 52, so that the execution arm 52 can reciprocate between the two travel switches 41, and the shovel plate 53 scrapes the materials adhered to the coal drop surface multiple times under the drive of the execution arm 52.

[0043] refer to Figures 1 to 3 As shown, in some embodiments, the device for clearing blockage of the coal drop pipe 10 further includes a detection mechanism, which is disposed on the pipe wall of the coal drop pipe 10 and is used to detect the flow thickness of the material in the coal drop pipe 10 .

[0044] In some embodiments, the detection mechanism is configured as a radar level device 30 .

[0045] In some embodiments, the device for clearing the blockage of the coal drop pipe 10 further includes a control mechanism, and the driving mechanism 20, the limiting mechanism 40 and the detection mechanism are all connected to the control mechanism by signal.

[0046] In the above embodiment, after the detection mechanism detects that the material flow thickness of the material in the coal drop pipe 10 is greater than the preset thickness and lasts for a preset time, the detection mechanism transmits the detection signal to the controller. The controller controls the driving mechanism 20 to start according to the detection signal transmitted by the detection mechanism. The driving mechanism 20 drives the first rotating shaft 51 of the clearing mechanism 50 to rotate, so that the scraping assembly can scrape the material adhered to the coal drop surface of the coal drop pipe 10.

[0047] In addition, during the operation of the driving mechanism 20, the detection mechanism will continuously detect the material flow thickness of the material in the coal drop pipe 10. When it is detected that the material flow thickness of the material in the coal drop pipe 10 is less than the preset thickness, the controller will control the driving mechanism 20 to stop working after the driving mechanism 20 has been working for a preset time.

[0048] In some embodiments, the driving mechanism 20 includes a driving motor 21 and a reducer 22, the output end of the driving motor 21 is drivingly connected to the input end of the reducer 22, and the output end of the reducer 22 is connected to the first rotating shaft 51 for driving the first rotating shaft 51 to pivot around its own axis.

[0049] The present disclosure exemplarily describes the working process of the clearing mechanism 50 of the coal dropping pipe 10. The area of ​​the coal dropping pipe 10 that is prone to coal blockage is generally located in the last section above the guide trough. At this time, in order to reduce the impact of coal on the conveyor belt below, the coal dropping pipe 10 will undergo a significant angle change in this section to reduce the speed of the coal flow. The coal is more likely to adhere to the coal dropping pipe 10 here, forming siltation, and slowly causing blockage. During the coal dropping process, the radar level meter 30 is arranged on the pipe wall of the coal dropping pipe 10. The radar level meter 30 constantly detects the flow thickness of the coal. When it is detected that the flow thickness exceeds the preset flow thickness and the duration exceeds the first preset detection time, the radar level meter 30 transmits the detection signal to the controller. The controller starts the drive motor 21 according to the detection signal transmitted by the radar level meter. The drive motor 21 drives the first rotating shaft 51 to rotate through the reducer 22. The first rotating shaft 51 drives the actuator arm 52 and the shovel plate 53 to rotate. The shovel plate 53 scrapes and removes the coal adhering to the coal dropping surface.

[0050] In the process of scraping and removing the coal material adhering to the coal dropping surface by the shovel plate 53, the execution arm 52 rotates around the first rotating shaft 51, and the rotation range is between the two travel switches 41 arranged on the pipe wall of the coal dropping pipe 10. The first rotating shaft 51 is provided with a limit plate 42. In the process of the first rotating shaft 51 driving the execution arm 52 to rotate, the limit plate 42 also rotates around the first rotating shaft 51. When the limit plate 42 rotates to approach any one of the two travel switches 41, the travel switch 41 is triggered, and the travel switch 41 transmits the trigger signal to the controller. The controller controls the driving motor 21 according to the trigger signal transmitted by the travel switch 41 to change the rotation direction of the driving motor 21 so that The first rotating shaft 51 drives the actuator arm 52 and the shovel plate 53 to return along the original travel trajectory until the limit plate 42 approaches another travel switch 41 and is triggered. The travel switch 41 transmits the trigger signal to the controller, and the controller controls the drive motor 21 to change the rotation direction of the drive motor 21, so that the first rotating shaft 51, the actuator arm 52 and the shovel plate 53 repeat the previous action, so that the actuator arm 52 drives the shovel plate 53 to move back and forth between the two travel switches 41. The shovel plate 53 also continuously scrapes the coal material adhered to the coal falling surface during this process, so that the shovel plate 53 can clean the adhered coal material more thoroughly.

[0051] In addition, during the continuous cleaning process of the shovel plate 53 on the adhered coal, when the radar level machine 30 detects that the material flow thickness of the coal is less than the preset material flow thickness and the duration exceeds the second preset detection time, the detection signal is transmitted to the controller. After the controller receives the detection signal, when the controller receives the trigger signal of the travel switch 41 again, the controller will control the drive motor 21 to stop rotating, and the clearing mechanism 50 will also stop cleaning the coal falling surface in the coal falling pipe 10.

[0052] In actual production, the usable space inside the coal dropping pipe 10 where the coal dropping surface is located is generally one-third of the space. The first rotating shaft 51 and the travel switch 41 can generally be arranged on the pipe wall of the non-working area of ​​the coal dropping pipe 10. When the clearing mechanism 50 stops working, the clearing mechanism 50 is generally in the non-working area of ​​the coal dropping pipe 10 to reduce interference with the coal flow of the falling coal.

[0053] In some embodiments, the preset material flow thickness, the first preset detection time and the second preset detection time can be determined according to actual conditions. For example, the preset material flow thickness can be set to 400 mm, and the first preset detection time and the second preset detection time can both be set to 1 minute.

[0054] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0055] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0056] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A coal drop pipe blockage clearing device, characterized in that: include: The blockage clearing mechanism comprises a scraping assembly and a first rotating shaft, wherein the first rotating shaft is parallel to the coal dropping surface of the coal dropping pipe and is rotatably connected to the coal dropping pipe, and the scraping assembly is arranged in the coal dropping pipe and is fixedly connected to the first rotating shaft; as well as, A driving mechanism, drivingly connected to the first rotating shaft, for driving the first rotating shaft and the scraping assembly to rotate, so that the scraping assembly can scrape the material adhered to the coal falling surface; The scraping assembly comprises an actuator arm and a scraping plate, one end of the actuator arm is fixedly connected to the first rotating shaft, and the other end of the actuator arm is fixedly connected to the scraping plate; The execution arm is constructed as a telescopic arm, which is used to adjust the distance between the scraping plate and the first rotating shaft; The actuator arm includes an upper arm, a sleeve and a spring. The upper arm is formed with a connecting head. The spring is sleeved on the upper arm. The upper arm is slidably inserted in the sleeve. The connecting head is in the sleeve and a gap is formed between the connecting head and the inner wall of the sleeve for circulating materials. One end of the spring is connected to the upper arm, and the other end of the spring abuts against the sleeve. One end of the upper arm facing away from the sleeve is fixedly connected to the first rotating shaft, and one end of the sleeve facing away from the upper arm is fixedly connected to the shovel plate.

2. The coal drop pipe blockage clearing device according to claim 1, characterized in that: When the scraping plate contacts the coal falling surface, the angle between the scraping surface of the scraping plate and the coal falling surface is 0° to 30°.

3. The coal drop pipe blockage clearing device according to claim 1, characterized in that: The coal drop pipe blockage clearing device also includes a limiting mechanism, which includes a limiting plate connected to the first rotating shaft and two travel switches. The two travel switches are respectively arranged on the pipe wall of the coal drop pipe to limit the rotation angle of the first rotating shaft.

4. The coal drop pipe blockage clearing device according to claim 3, characterized in that: The coal drop pipe blockage clearing device further comprises a detection mechanism, which is arranged on the pipe wall of the coal drop pipe and is used to detect the material flow thickness of the material in the coal drop pipe.

5. The coal drop pipe blockage clearing device according to claim 4, characterized in that: The detection mechanism is configured as a radar level meter.

6. The coal drop pipe blockage clearing device according to claim 4, characterized in that: The coal drop pipe blockage clearing device further comprises a control mechanism, and the driving mechanism, the limiting mechanism and the detecting mechanism are all connected to the control mechanism by signals.

7. The coal drop pipe blockage clearing device according to any one of claims 1 to 6, characterized in that: The driving mechanism includes a driving motor and a reducer, wherein the output end of the driving motor is drivingly connected to the input end of the reducer, and the output end of the reducer is connected to the first rotating shaft for driving the first rotating shaft to pivot around its own axis.

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