Coal feeder and coal conveying device with same

Abstract

The utility model provides a coal feeder and a coal conveying device with the coal feeder, and the coal feeder comprises a machine body which is provided with a conveying cavity, the conveying cavity is internally provided with a rotary conveying belt, and the conveying belt is located below a coal bunker; the detection assembly comprises a supporting shaft, a detection plate and a detection part, the supporting shaft is rotatably arranged in the conveying cavity, the detection plate is connected to the supporting shaft, and the detection part is arranged on the supporting shaft to detect the rotating angle of the supporting shaft. Through the technical scheme provided by the invention, the problem that coal water bursting cannot be detected in related technologies can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal devices, in particular to a coal feeder and a coal conveying device having the same. Background Art

[0002] The coal industry uses coal bunkers extensively for temporary storage and transportation of coal. During the temporary storage of coal, a large amount of water may enter the coal bunker. After the water accumulates, it is easy to form water coal in the coal bunker, which will cause water coal bunker burst during the coal feeding operation.

[0003] Currently, coal is typically transferred from coal bunkers using coal feeders. Coal feeders come in various forms, such as belt feeders, reciprocating feeders, and vibrating feeders, and are widely used beneath coal bunkers. Due to various reasons and structural limitations, the coal feeders currently used in the coal industry lack the ability to detect and prevent coal-water bunker overflows. Consequently, during feeding operations, coal-water bunker overflows cannot be detected in a timely manner and countermeasures cannot be implemented. This can lead to serious safety accidents, resulting in significant personal injury and property damage. Utility Model Content

[0004] The utility model provides a coal feeder and a coal conveying device having the same, so as to solve the problem in the related art that coal-water bunker burst cannot be detected.

[0005] According to one aspect of the present invention, a coal feeder is provided, which includes: a body having a conveying chamber, a rotatable conveyor belt being arranged in the conveying chamber, and the conveyor belt being located below the coal bin; a detection assembly, including a support shaft, a detection plate and a detection member, the support shaft being rotatably arranged in the conveying chamber, the detection plate being connected to the support shaft, and the detection member being arranged on the support shaft to detect the swing angle of the support shaft.

[0006] Furthermore, the detection component includes an angle sensor, which is arranged at the end of the support shaft and located outside the body.

[0007] Furthermore, the detection assembly also includes a balancing piece, which is arranged on the detection plate, and an angle is formed between the balancing piece and the detection plate.

[0008] Furthermore, the balancing member includes a balancing frame and a balancing weight, the balancing weight is arranged on the balancing frame, and the balancing frame is arranged on the supporting shaft.

[0009] Furthermore, a ratio of the torque generated by the balancing member on the support shaft to the torque generated by the detection plate on the support shaft is between 0.5 and 0.98.

[0010] Furthermore, the detection component also includes a roller and a speed sensor for detecting the rotation speed of the roller. The roller is rotatably arranged on the detection plate, and the roller is located on a side of the detection plate away from the support shaft.

[0011] Furthermore, the detection component also includes a cleaning knife, which is arranged on the detection plate and is in clearance with the roller.

[0012] Furthermore, the gap between the cleaning blade and the roller is between 0.8 mm and 1.2 mm.

[0013] Furthermore, a channel plate is provided on the support shaft, and the detection plate is connected to the channel plate. In the width direction of the conveying cavity, the size of the detection plate is smaller than the size of the channel plate.

[0014] According to another aspect of the present invention, a coal conveying device is provided, which includes a coal bunker, a coal feeder and a belt conveyor. The coal feeder is located below the coal bunker, and the belt conveyor is located downstream of the coal feeder. The coal feeder is the coal feeder provided above.

[0015] According to the technical solution of the present invention, the coal feeder includes a body and a detection component. When transporting coal, the flat gate of the coal bunker is opened, and then the coal feeder is started. The material in the coal bunker enters the body of the coal feeder through the coal bunker opening. Driven by the coal feeder conveyor belt, the material moves forward along the body, and is finally sent out from the discharge end and falls onto the belt conveyor, and is transported to a designated position by the belt conveyor. When the material moves in the body, it can contact the detection plate set in the conveying cavity, and then the detection plate drives the support shaft to rotate. The rotation angle of the support shaft can be measured by the detection component. If water-coal bunker collapse occurs in the coal bunker and the body during operation, a large amount of water-coal with high fluidity will instantly surge out of the coal bunker and enter the body under the high pressure of the liquid column in the coal bunker. The material in the body moves forward rapidly, and at the same time quickly fills the entire body, causing the height of the material in the body to rise rapidly. Under the influence of the huge buoyancy of the water and coal in the machine body and the impact force of the forward movement, the detection plate swings upward rapidly, driving the support shaft to rotate upward. At this time, the detection part installed on the support shaft immediately measures the change in the swing angle of the support shaft, which is greatly increased compared to the swing angle under normal working conditions, and thus it can be determined whether there is a water and coal burst in the machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 The structure diagram of the coal feeder provided according to the embodiment of the utility model is shown;

[0018] Figure 2 A top view of a coal conveying device according to an embodiment of the present utility model is shown;

[0019] Figure 3 A side view of a coal conveying device provided according to an embodiment of the utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 1. Conveyor belt; 2. Material; 3. Flat gate; 4. Coal bunker; 5. Balancing frame; 6. Support shaft; 7. Channel plate; 8. Detection plate; 9. Roller; 10. Cleaning knife; 11. Belt conveyor; 12. Machine body; 13. Angle sensor; 14. Rotating shaft; 15. Balancing block; 16. Speed ​​sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 3 As shown, an embodiment of the present invention provides a coal feeder, which includes a body 12 and a detection component. The body 12 has a conveying cavity, and a rotatable conveyor belt 1 is provided in the conveying cavity. The conveyor belt 1 is located below the coal feeder; the detection component includes a support shaft 6, a detection plate 8 and a detection member. The support shaft 6 is rotatably arranged in the conveying cavity. The detection plate 8 is connected to the support shaft 6, and the detection member is provided on the support shaft 6 to detect the swing angle of the support shaft 6.

[0024] Using the technical solution of the present utility model, a coal feeder includes a body 12 and a detection assembly. During coal feeding, the flat gate 3 of the coal bunker 4 is opened, and the coal feeder is started. Material in the coal bunker 4 enters the coal feeder body 12 through the coal bunker opening. Driven by the coal feeder conveyor belt 1, the material moves forward along the body 12, ultimately being discharged from the discharge end and falling onto the belt conveyor, where it is transported to a designated location. As the material moves within the body 12, it contacts the detection plate 8 disposed within the conveying chamber, which in turn drives the support shaft 6 to rotate. The detection assembly can measure the rotation angle of the support shaft 6. If coal-water sluices occur within the coal bunker and body 12 during operation, a large amount of highly fluid coal-water instantly surges out of the coal bunker and into the body 12 under the high pressure of the liquid column within the coal bunker. The material in the body 12 rapidly moves forward and also rapidly fills the entire body 12, causing the material level within the body 12 to rise rapidly. Under the action of the huge buoyancy of the water and coal in the body 12 and the impact force of the forward movement, the detection plate 8 swings upward rapidly, driving the support shaft 6 to rotate upward. At this time, the detection component installed on the support shaft 6 immediately measures the change in the swing angle of the support shaft 6, which is greatly increased compared to the swing angle under normal working conditions, and thus it can be determined whether water and coal burst occurs in the body 12.

[0025] In this embodiment, both ends of the support shaft 6 are connected to the inner wall of the machine body.

[0026] In other embodiments, other structures may be used to drive the support shaft 6 to swing, for example, a detection rod.

[0027] Furthermore, if it is determined that it is a coal-water bunker burst, a signal is sent through the electrical control system to quickly close the flat gate 4, cutting off the passage for coal-water bunker to escape from the coal bunker, thereby effectively interrupting the continuation of the coal-water bunker burst and preventing the large amount of coal-water bunker burst from causing damage to equipment and personnel.

[0028] like Figure 2 As shown, the detection member includes an angle sensor 13, which is arranged at the end of the support shaft 6 and located outside the body 12. Using the angle sensor 13 to detect the rotation angle of the support shaft 6 has the advantages of simple structure and easy installation.

[0029] Among them, by arranging the angle sensor 13 outside the machine body 12, it is possible to prevent the material 2 from impacting the angle sensor 13, thereby increasing its service life.

[0030] like Figure 1 and Figure 3As shown, the detection assembly further includes a balancing member, which is disposed on the detection plate 8 at an angle to the detection plate 8. The balancing member provides a balancing force for the detection plate 8, preventing the lower end of the detection plate 8 from sinking too deeply into the material 2, thereby enabling the detection plate 8 to function properly.

[0031] In this embodiment, the balance member and the detection plate 8 are arranged at intervals along the circumferential direction of the support shaft 6 .

[0032] When there is no material 2 in the machine body, the detection plate 8 falls down and is basically in a vertical state.

[0033] like Figure 1 and Figure 3 As shown, the balancing member includes a balancing frame 5 and a balancing weight 15, wherein the balancing weight 15 is arranged on the balancing frame 5, and the balancing frame 5 is arranged on the support shaft 6. The above-mentioned balancing member and the balancing weight 15 arranged on the balancing frame 5 have the advantages of simple structure and easy processing.

[0034] The ratio of the torque generated by the balance member on the support shaft 6 to the torque generated by the detection plate 8 on the support shaft 6 is between 0.5 and 0.98. With the above arrangement, the depth of the detection plate 8 sinking into the material 2 will not be too large, and the detection plate 8 can work normally.

[0035] like Figure 1 As shown, the detection assembly also includes a roller 9 and a speed sensor 16 for detecting the rotation speed of the roller 9. The roller 9 is rotatably mounted on the detection plate 8, and the roller 9 is located on the side of the detection plate 8 away from the support shaft 6. When the material 2 falls, it can contact and lift the roller 9, allowing the roller 9 to float on the surface of the material 2 and be pressed into the material 2 to a certain depth. On the one hand, the roller can rotate freely, and on the other hand, the adhesion of the material 2 to the surface of the roller 9 is greatly reduced.

[0036] The roller 9 is mounted on the bottom of the detection plate 8 via a rotary shaft 14 .

[0037] By setting the ratio between the torque generated by the balance member on the support shaft 6 and the torque generated by the detection plate 8 on the support shaft 6 to be between 0.5 and 0.98, the torque difference between the two is small, and the depth of the roller 9 pressed into the material 2 is also very small.

[0038] In this embodiment, the torque generated by the balancing member on the support shaft 6 is smaller than the torque generated by the detection plate 8 on the support shaft 6 and is within a range of 0.5 kg·m to 2 kg·m.

[0039] The roller 9 can reduce the sliding resistance between the end of the detection plate 8 and the material 2, so that the detection plate 8 can rotate more smoothly.

[0040] like Figure 1As shown, the detection assembly further includes a cleaning knife 10, which is arranged on the detection plate 8 and is clearance-matched with the roller 9. The cleaning knife 10 can be used to clean the roller 9, thereby ensuring long-term stable and reliable operation of the entire detection device.

[0041] In this embodiment, the speed sensor 16 is provided on the channel plate 7. When a coal-water burst occurs, coal-water instantly appears in the machine body 12, and the coal-water flow rate increases. At this time, the swing angle of the channel plate 7 increases in a step-like manner, and the rotation speed of the roller 9 also increases in a step-like manner, indicating that a burst has occurred.

[0042] In the present embodiment, the gap between the cleaning blade 10 and the roller 9 is between 0.8mm and 1.2mm. Adopting the above-mentioned gap range, the cleaning blade 10 can be utilized to clean the roller 9 every time the roller 9 rotates one circle, so that the roller 9 can rotate normally.

[0043] The gap between the cleaning blade 10 and the roller 9 may be 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, or any value between 0.8 mm and 1.2 mm.

[0044] It should be noted that when the belt coal feeder is feeding normally, the roller 9 contacts and rotates with the upper surface of the material 2 in the body 12. If the material 2 in the body 12 is sticky, some of the material 2 may adhere to the outer circle of the roller 9. If this part of the adhered material 2 is not cleaned in time, the outer diameter of the roller 9 will become larger after a long period of accumulation, and the normal rotation of the roller 9 will be affected, which will have a serious impact on the detection function of the entire device. For this reason, a cleaning knife 10 is installed on the roller 9. The cleaning knife 10 is a cleaning knife 10. The distance between the cleaning knife 10 and the outer edge of the roller 9 is 1 mm. Since the distance between the cleaning knife 10 and the outer cylindrical surface of the roller 9 is very small, the surface of the cleaning knife 10 is also very sharp. At the same time, the outer cylindrical surface of the roller 9 is cleaned by the blade once every rotation. Therefore, during the working process of the roller 9, the outer cylindrical surface of the roller 9 can be kept clean and regular to ensure its normal operation.

[0045] like Figure 1 As shown, a channel plate 7 is provided on the support shaft 6, and a detection plate 8 is connected to the channel plate 7. In the width direction of the conveying cavity, the detection plate 8 is smaller than the channel plate 7. The use of the channel plate 7 can enhance the connection strength between the detection plate 8 and the support shaft 6, ensuring its service life under long-term operation.

[0046] Among them, when the water-coal bunker burst occurs, due to the existence of the channel plate 7, the total area of ​​the inertial impact of the water-coal on the support shaft 6 that causes the swing is greatly increased, thereby increasing the reliability of the water-coal bunker burst detection, with obvious advantages.

[0047] In this embodiment, when water-coal appears in the coal bunker 4 above the coal feeder and a water-coal bunker burst occurs, the water-coal rapidly gushes out from the coal outlet at the bottom of the coal bunker 4, quickly filling the entire body of the coal feeder, and rapidly moves forward along the body under the high pressure of the water-coal in the coal bunker 4. During this process, the water-coal rapidly surging forward in the body impacts the roller, detection plate, and channel plate, which rapidly swing upward. The angle sensor installed on the support shaft 6 can instantly measure the changing speed and value of the torsion angle of the discharge support shaft 6, and send this data to the electrical control system for automatic analysis and processing, thereby quickly and accurately determining whether a water-coal bunker burst problem exists in the coal bunker. By simply providing a simple detection plate and angle sensor in the coal feeder, instant online detection of water-coal bunker burst is achieved, which has a series of advantages such as simple structure, reliable use, and rapid response.

[0048] Another embodiment of the present invention provides a coal conveying device, which includes a coal bunker, a coal feeder, and a belt conveyor 11. The coal feeder is located below the coal bunker, and the belt conveyor 11 is located downstream of the coal feeder. The coal feeder is the coal feeder provided above. When conveying coal, the flat gate 3 of the coal bunker 4 is opened, and then the coal feeder is started. The material in the coal bunker 4 enters the body 12 of the coal feeder through the coal bunker opening. Driven by the coal feeder conveyor belt 1, the material moves forward along the body 12, and is finally sent out from the discharge end and falls onto the belt conveyor, and is transported to a designated position by the belt conveyor. When the material moves in the body 12, it can contact the detection plate 8 set in the conveying chamber, and then the detection plate 8 drives the support shaft 6 to rotate. The rotation angle of the support shaft 6 can be measured by the detection member. If coal-water bunker collapse occurs within the coal bunker and the machine body 12 during operation, a large amount of highly fluid coal-water instantly surges out of the bunker and into the machine body 12 under the high pressure of the liquid column within the coal bunker. The material within the machine body 12 rapidly moves forward while also rapidly filling the entire machine body 12, rapidly raising the material level within the machine body 12. Under the immense buoyancy of the coal-water bunker within the machine body 12 and the impact of this forward movement, the detection plate 8 rapidly swings upward, driving the support shaft 6 to rotate upward. At this point, the detection member mounted on the support shaft 6 instantly measures the change in the swing angle of the support shaft 6, which shows a significant increase compared to the swing angle under normal operating conditions. This allows the determination of whether coal-water bunker collapse has occurred within the machine body 12.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0051] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A coal feeder, characterized in that: The coal feeder comprises: The machine body (12) has a conveying cavity, in which a rotatable conveying belt (1) is arranged, and the conveying belt (1) is located below the coal bunker (4); The detection assembly comprises a support shaft (6), a detection plate (8) and a detection member, wherein the support shaft (6) is rotatably arranged in the conveying cavity, the detection plate (8) is connected to the support shaft (6), and the detection member is arranged on the support shaft (6) to detect the swing angle of the support shaft (6).

2. The coal feeder according to claim 1, characterized in that: The detection member comprises an angle sensor (13), and the angle sensor (13) is arranged at the end of the support shaft (6) and located outside the machine body (12).

3. The coal feeder according to claim 1, characterized in that: The detection assembly further comprises a balancing member, which is arranged on the detection plate (8), and an angle is formed between the balancing member and the detection plate (8).

4. The coal feeder according to claim 3, characterized in that: The balancing member comprises a balancing frame (5) and a balancing weight (15), wherein the balancing weight (15) is arranged on the balancing frame (5), and the balancing frame (5) is arranged on the supporting shaft (6).

5. The coal feeder according to claim 3, characterized in that: The ratio between the torque generated by the balancing member on the support shaft (6) and the torque generated by the detection plate (8) on the support shaft (6) is between 0.5 and 0.

98.

6. The coal feeder according to claim 1, characterized in that: The detection assembly further comprises a roller (9) and a speed sensor (16) for detecting the rotation speed of the roller (9); the roller (9) is rotatably arranged on the detection plate (8); and the roller (9) is located on a side of the detection plate (8) away from the support shaft (6).

7. The coal feeder according to claim 6, characterized in that: The detection assembly further comprises a cleaning knife (10), wherein the cleaning knife (10) is arranged on the detection plate (8) and is clearance-matched with the roller (9).

8. The coal feeder according to claim 7, characterized in that: The gap between the cleaning blade (10) and the roller (9) is between 0.8 mm and 1.2 mm.

9. The coal feeder according to claim 1, characterized in that: A channel plate (7) is provided on the support shaft (6), and the detection plate (8) is connected to the channel plate (7). In the width direction of the conveying cavity, the size of the detection plate (8) is smaller than the size of the channel plate (7).

10. A coal conveying device, characterized in that: The coal conveying device includes a coal bunker, a coal feeder, and a belt conveyor (11). The coal feeder is located below the coal bunker, and the belt conveyor (11) is located downstream of the coal feeder. The coal feeder is the coal feeder according to any one of claims 1 to 9.

Images