Coal conveying system

Abstract

The utility model relates to a coal conveying system. The coal conveying system comprises a coal hopper and an anti-blocking mechanism. The coal falling hopper comprises a coal falling cavity with a feeding port and a discharging port, the feeding port is located above the discharging port, and the coal falling cavity is used for material circulation. Materials can enter the coal falling cavity through the feeding port, and then the materials are discharged through the discharging port after passing through the coal falling cavity. The anti-blocking mechanism comprises a first driving part and a spiral conveying shaft which is arranged in the coal falling cavity and extends to the material falling opening in the vertical direction, the first driving part drives the spiral conveying inner shaft to rotate in a pivot mode along the axis of the spiral conveying inner shaft and is used for boosting falling of materials, so that the materials blocking the material falling opening are dredged, and the materials are prevented from blocking the material falling opening of the coal falling cavity; therefore, the materials can smoothly fall through the blanking port. Therefore, the normal operation of work is ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of pulverized coal conveying equipment, and in particular, to a coal conveying system. Background Art

[0002] The coal conveying system usually includes a coal hopper and a conveyor belt. The coal hopper is located above the conveyor belt. The coal powder flows through the coal hopper and falls onto the conveyor belt. The conveyor belt transports the coal powder to a designated location. In the related art, the coal powder sometimes has high humidity. When passing through the coal hopper, it may be blocked at the coal drop port of the coal hopper, resulting in poor coal drop or even no coal drop, affecting the normal operation. Utility Model Content

[0003] The purpose of the present disclosure is to provide a coal conveying system, which can clear the coal powder blocked in the coal drop port of the coal drop hopper to ensure the normal progress of the conveying work.

[0004] In order to achieve the above object, the present disclosure provides a coal transportation system, comprising:

[0005] A coal dropping hopper, comprising a coal dropping cavity having a feed port and a drop port, wherein the feed port is located above the drop port, and the coal dropping cavity is used for material circulation; and

[0006] The anti-blocking mechanism comprises a first driving member and a screw conveying shaft which is arranged in the coal dropping chamber and extends vertically to the material dropping port. The first driving member drives the screw conveying shaft to pivot along its own axis to help the material drop.

[0007] Optionally, the anti-blocking mechanism further includes a first transmission assembly, wherein the first transmission assembly is respectively connected to the first driving member and the screw conveying shaft, and the first driving member drives the screw conveying shaft to rotate through the first transmission assembly.

[0008] Optionally, the first driving member is constructed as a first driving motor, and the first transmission assembly includes a driving gear, a driven gear and a rack, the driving gear is connected to the rotating shaft of the first driving motor so that the first driving motor drives the driving gear to rotate, the driven gear is connected to the screw conveying shaft, and the rack is respectively meshed with the driving gear and the driven gear, so that the driving gear can drive the driven gear and the screw conveying shaft connected to the driven gear to rotate through the rack.

[0009] Optionally, the coal transportation system further includes a first sensor and a controller, wherein the first sensor is disposed at the material drop port and is used to detect the flow rate of the material flowing through the material drop port, and the first driving member and the first sensor are both connected to the controller signal.

[0010] Optionally, the coal transportation system also includes a conveying component, which has a first end and a second end relative to each other, the first end of the conveying component is located below the drop port of the coal drop hopper, the material in the coal drop chamber falls to the first end, and the conveying component transports the material at the first end to the second end.

[0011] Optionally, the conveying assembly includes a second driving member, a driving wheel, a driven wheel, and a conveying belt wound around the driving wheel and the driven wheel.

[0012] Optionally, the coal conveying system further includes a belt wear detection mechanism for detecting the degree of wear of the conveyor belt.

[0013] Optionally, the belt wear detection mechanism includes at least one ultrasonic detection component, the ultrasonic detection component includes an ultrasonic generator and an ultrasonic receiver arranged at intervals in the vertical direction, there is a gap between the ultrasonic generator and the ultrasonic receiver, the conveyor belt has an upper conveying section and a lower conveying section, and the lower conveying section can move through the gap.

[0014] Optionally, the coal transportation system further comprises a cleaning mechanism, which is disposed upstream of the belt wear detection mechanism along the moving direction of the conveyor belt and is used for cleaning materials adhered to the surface of the conveyor belt.

[0015] Optionally, the coal transportation system further includes a frame and a dust detection sensor disposed on the frame, the coal hopper is disposed on the frame, and the dust detection sensor is used to detect the dust concentration around the coal hopper.

[0016] Through the above technical scheme, materials such as coal powder flow through the coal dropping chamber of the coal dropping hopper, wherein the feed port of the coal dropping chamber is located above the drop port, and the coal powder falls from the feed port to the drop port. When the coal powder is blocked at the drop port of the coal dropping chamber, the first drive mechanism drives the spiral conveying shaft to pivot along its own axis to assist the falling of the coal powder from the feed port, so as to clear the blocked coal powder and allow the coal powder to fall smoothly through the coal dropping chamber to ensure the normal operation.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 is a schematic structural diagram of a coal transportation system provided in an exemplary embodiment of the present disclosure;

[0020] Figure 2 is a schematic structural diagram of a first driving member provided in an exemplary embodiment of the present disclosure;

[0021] Figure 3 is a schematic structural diagram of a spiral conveying rod provided in an exemplary embodiment of the present disclosure;

[0022] Figure 4 is a schematic diagram of a belt wear detection mechanism provided in an exemplary embodiment of the present disclosure;

[0023] Figure 5 Schematic diagram of the structure of a cleaning mechanism provided in an exemplary embodiment of the present disclosure.

[0024] Description of Reference Numerals

[0025] 10-coal hopper; 11-coal chamber; 12-feeding port; 13-feeding port; 20-anti-blocking mechanism; 21-first driving member; 210-first driving motor; 22-first transmission assembly; 221-driving gear; 222-rack; 223-driven gear; 23-screw conveying shaft; 231-conveying shaft; 232-spiral blade; 30-first sensor; 40-dust detection sensor; 50-conveying assembly; 501-first end; 502-first Two ends; 51-driving wheel; 52-conveyor belt; 521-upper conveying section; 522-lower conveying section; 53-driven wheel; 54-second driving member; 60-belt wear detection mechanism; 61-ultrasonic detection component; 611-ultrasonic generator; 612-ultrasonic receiver; 62-detection mechanism protection box; 70-cleaning mechanism; 71-cleaning roller; 72-third driving member; 90-frame; 100-driving member protection box; 200-transmission protection box. 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, the directional words used, such as "inside" and "outside", refer to the inside and outside relative to the outline of the component or structure itself. In addition, it should be noted that the terms used, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0028] like Figures 1 to 5As shown, the present disclosure provides a coal conveying system, including a coal hopper 10 and an anti-blocking mechanism 20. The coal hopper 10 includes a coal dropping chamber 11 having a feed port 12 and a drop port 13, the feed port 12 is located above the drop port 13, and the coal dropping chamber 11 is used for material circulation. The material can enter the coal dropping chamber 11 from the feed port 12, and then pass through the coal dropping chamber 11 and be discharged from the discharge port. The anti-blocking mechanism 20 includes a first driving member 21 and a screw conveying shaft 23 which is arranged in the coal dropping chamber 11 and extends to the drop port 13 in a vertical direction. The first driving member 21 drives the inner shaft of the screw conveying to pivot along its own axis to help the material fall, so as to clear the material blocked in the drop port 13, prevent the material from being blocked in the drop port 13 of the coal dropping chamber 11, and enable the material to fall smoothly through the drop port 13. To ensure the normal operation of the work.

[0029] In the above-mentioned embodiment, the material may be coal powder, which will not be described in detail here. In addition, the use of the spiral conveying shaft 23 to dredge the coal powder blocked in the material drop opening 13 can help push the blocked coal powder out of the material drop opening 13, and the dredging effect is better.

[0030] In some embodiments, Figures 1 to 3 As shown, the anti-blocking mechanism 20 further includes a first transmission assembly 22 , which is respectively connected to the first driving member 21 and the screw conveying shaft 23 , and the first driving member 21 drives the screw conveying shaft 23 to rotate through the first transmission assembly 22 .

[0031] The first transmission assembly 22 can be arbitrarily set according to actual needs. For example, when the first driving member 21 is configured as a first driving motor 210, the first transmission assembly 22 may include a driving gear 221, a driven gear 223 and a rack 222. The driving gear 221 is connected to the rotating shaft of the first driving motor 210, the first driving motor 210 drives the driving gear 221 to rotate, the driven gear 223 is connected to the spiral conveying shaft 23, and the rack 222 is respectively meshed with the driving gear 221 and the driven gear 223, so that the driving gear 221 can drive the driven gear 223 and the spiral conveying shaft 23 connected to the driven gear 223 to rotate through the rack 222.

[0032] In the above-mentioned embodiment, when the material outlet 13 of the coal dropping chamber 11 is blocked, the first driving motor 210 can be started, and the first driving motor 210 drives the screw conveying shaft 23 to rotate through the driving gear 221, the rack 222 and the driven gear 223, and the screw conveying shaft 23 helps to push the blocked coal powder in the material outlet 13 out of the material outlet 13.

[0033] The spiral conveying shaft 23 may include a conveying shaft 231 connected to the driven gear 223 and a spiral blade 232 spirally arranged around the rotating shaft. When the driven gear 223 drives the conveying shaft 231 to rotate around its own axis, the spiral blade 232 rotates with the rotating shaft to help the coal powder fall.

[0034] In addition, considering that the anti-blocking mechanism 20 is applied to the coal powder environment, dust will affect the operation of the first drive motor 210 and the first transmission assembly 22. Therefore, a drive member protection box 100 can be set at the first drive motor 210 to protect the first drive motor 210. Specifically, the first drive motor 210 can be installed on the frame 90, and the drive member protection box 100 can also be installed on the frame 90 to protect the first drive motor 210. A transmission protection box 200 can also be set, and the driving gear 221, the driven gear 223 of the first transmission assembly 22 and the rack 222 respectively meshed with the driving gear 221 and the driven gear 223 are all provided with a transmission protection box 200, which is used to protect the driving gear 221, the driven gear 223 and the rack 222 to prevent the driving gear 221, the driven gear 223 and the rack 222 from being affected by coal powder dust.

[0035] In other possible implementations, the first transmission assembly 22 may also be constructed in other forms, such as a synchronous belt, which will not be described in detail here.

[0036] In some embodiments, the coal transportation system also includes a first sensor 30 and a controller (not shown in the figure). The first sensor 30 is arranged at the material drop port 13 for detecting the amount of material flowing through the material drop port 13. The first driving member 21 and the first sensor 30 are both connected to the controller signal.

[0037] In the above-mentioned embodiment, the material may be coal powder, and the first sensor 30 may be configured as an infrared sensor, which is used to detect the amount of coal powder passing through the material drop opening 13. When the infrared sensor detects that no coal powder passes through the material drop opening 13 during normal coal powder feeding, the coal powder is blocked. The first sensor 30 transmits a signal to a controller (not shown in the figure), and the controller controls the first driving member 21 to start, driving the screw conveying shaft 23 to rotate, so as to clear the coal powder blocked in the material drop opening 13.

[0038] In some embodiments, Figure 1 As shown, the coal transportation system also includes a conveying component 50, which has a first end 501 and a second end 502 relative to each other. The first end 501 of the conveying component 50 is located below the drop port 13 of the coal drop hopper 10. The material in the coal drop chamber 11 falls to the first end 501, and the conveying component 50 transports the material at the first end 501 to the second end 502.

[0039] In the above-mentioned embodiment, materials such as coal powder can fall through the drop port 13 of the coal drop hopper 10 to the first end 501 of the conveying assembly 50 below, and then the conveying assembly 50 conveys the coal powder at the first end 501 to the second end 502 to complete the conveying of the coal powder.

[0040] In some embodiments, Figure 1 As shown, the conveying assembly 50 includes a second driving member 54, a driving wheel 51, a driven wheel 53, and a conveyor belt 52 wound around the driving wheel 51 and the driven wheel 53. The driving wheel 51 rotates around its own axis to drive the conveyor belt 52 to rotate. In addition, the conveying assembly 50 also includes a second driving member 54, which is drivingly connected to the driving wheel 51 and is used to drive the driving wheel 51 to rotate. The second driving member 54 can be configured as a stepping motor, and a belt transmission can be used between the second driving member 54 configured as a stepping motor and the driving wheel 51, which will not be described in detail here.

[0041] In some embodiments, Figure 1 and Figure 4 As shown, the coal conveying system further includes a belt wear detection mechanism 60 for detecting the degree of wear of the conveyor belt 52. When it is detected that the conveyor belt 52 is severely worn, the conveyor belt 52 can be replaced in time to avoid the danger of using the severely worn conveyor belt 52 to convey coal powder, thereby ensuring the normal operation of the work.

[0042] In some embodiments, the belt wear detection mechanism 60 includes at least one ultrasonic detection component 61, the ultrasonic detection component 61 includes an ultrasonic generator 611 and an ultrasonic receiver 612 arranged at intervals in the vertical direction, there is a gap between the ultrasonic generator 611 and the ultrasonic receiver 612, and the conveyor belt 52 has an upper conveying section 521 and a lower conveying section 522, and the lower conveying section 522 can move through the gap.

[0043] In the above-mentioned embodiment, there may be multiple ultrasonic detection components 61, and the multiple ultrasonic detection components 61 are arranged at intervals along the moving direction of the conveyor belt 52. The coal conveying system also includes a detection mechanism protection box 62, and the multiple ultrasonic detection components 61 are all arranged in the detection mechanism protection box 62 for protecting the multiple ultrasonic detection components 61.

[0044] In actual operation, an opening may be provided on the side wall of the detection mechanism protection box 62 to allow the conveyor belt 52 to pass through.

[0045] In some embodiments, Figure 1 and Figure 5 As shown, the coal conveying system also includes a cleaning mechanism 70 , which is disposed upstream of the belt wear detection mechanism 60 along the moving direction of the conveyor belt 52 and is used to clean materials adhered to the surface of the conveyor belt 52 .

[0046] In the above-mentioned embodiment, the material may be coal powder. The cleaning mechanism 70 includes a third driving member 72 and a cleaning roller 71, wherein the third driving member 72 is drivingly connected to the cleaning roller 71, and is used to drive the cleaning roller 71 to rotate, so as to clean the surface of the conveyor belt 52 through the cleaning roller 71, and is used to clean the coal powder adhered to the surface of the conveyor belt 52, so as to prevent the coal powder adhered to the surface of the conveyor belt 52 from affecting the detection of the ultrasonic detection mechanism.

[0047] In addition, in order to make the cleaning roller 71 clean more cleanly, bristles can be arranged on the surface of the cleaning roller 71. When the cleaning roller 71 rotates, the bristles arranged on the cleaning roller 71 continuously clean the surface of the conveyor belt 52 to clean the coal powder bonded to the surface of the conveyor belt 52.

[0048] In some embodiments, the third driving member 72 can be configured in any suitable form. For example, the third driving member 72 can be configured as a servo motor, and the servo motor can drive the cleaning roller 71 to rotate through a belt drive.

[0049] In some embodiments, the coal transportation system further includes a frame 90 and a dust sensor disposed on the frame 90 , the coal hopper 10 is disposed on the frame 90 , and the dust detection sensor 40 is used to detect the dust concentration around the coal hopper 10 .

[0050] In the above-mentioned embodiment, the dust sensor can detect the dust concentration around the coal hopper 10 at all times. When it is detected that the dust concentration around the coal hopper 10 exceeds the preset dust concentration, the coal dropping and coal transportation can be stopped. When the dust sensor detects that the dust concentration around the coal hopper 10 drops below the preset dust concentration, the coal dropping and coal transportation can be continued to prevent the dust concentration from being too high and causing danger when the coal is dropped and transported.

[0051] In addition, when the dust sensor detects that the dust concentration around the coal hopper 10 exceeds the preset concentration, dust reduction measures can be used to remove dust from the dropped coal and transported coal in the hopper, so that the dust concentration around the coal hopper 10 is less than the preset dust concentration, so as to avoid safety hazards caused by excessive dust concentration around the coal hopper 10.

[0052] The present disclosure exemplarily describes the working process of the coal conveying system, wherein the coal powder is loaded into the coal dropping chamber 11 through the feeding port 12 of the dropping chamber, and the coal powder in the coal dropping chamber 11 falls to the first end 501 of the conveying assembly 50 through the dropping port 13, and the conveyor belt 52 conveys the coal powder from the first end 501 to the second end 502. During the feeding process, the first sensor 30 configured as an infrared sensor can detect the amount of coal powder passing through the dropping port 13. When the first sensor 30 detects that no coal powder passes through the dropping port 13, it indicates that the coal powder is blocked at the dropping port 13 during the feeding process, and the first driving member 21 can be started to drive the screw conveying shaft 23 to rotate, and the screw conveying shaft 23 helps to push the coal powder at the blocked part out of the dropping port 13 to clear the blocked part of the dropping port 13. This allows the coal dropping hopper 10 to discharge normally.

[0053] In addition, the lower conveying section 522 of the conveyor belt 52 passes through the gap between the ultrasonic generator 611 and the ultrasonic receiver 612 of the ultrasonic detection component 61. The ultrasonic detection component 61 can detect the degree of wear of the conveyor belt 52 and replace it when the conveyor belt 52 is severely worn, thereby avoiding the use of a severely worn conveyor belt 52 that may cause the conveyor belt 52 to break during the coal powder conveying process, thereby affecting normal operation.

[0054] In addition, the cleaning roller 71 of the cleaning mechanism 70 located upstream of the ultrasonic conveying component 50 in the moving direction of the conveyor belt 52 can always clean the coal powder adhered to the surface of the conveyor belt 52 to prevent the coal powder adhered to the conveyor belt 52 from affecting the detection of the ultrasonic detection component 61.

[0055] In addition, the dust sensor installed on the frame 90 can detect the dust concentration around the coal hopper 10 at all times. When the dust concentration near the coal hopper 10 exceeds the preset dust concentration, the coal dropping and transportation can be temporarily stopped to avoid the harm caused by excessive dust concentration; or when the dust concentration in the coal hopper 10 exceeds the preset dust concentration, the dust concentration can be reduced through dust reduction measures to avoid the harm caused by excessive dust concentration.

[0056] 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.

[0057] 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.

[0058] 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 transportation system, characterized in that: include: A coal dropping hopper, comprising a coal dropping cavity having a feed inlet and a drop inlet, wherein the feed inlet is located above the drop inlet, and the coal dropping cavity is used for material circulation; and The anti-blocking mechanism includes a first driving member and a screw conveying shaft which is arranged in the coal dropping chamber and extends vertically to the material dropping port. The first driving member drives the screw conveying shaft to pivot along its own axis to help the material drop.

2. The coal transportation system according to claim 1, characterized in that: The anti-blocking mechanism further includes a first transmission assembly, which is respectively connected to the first driving member and the screw conveying shaft, and the first driving member drives the screw conveying shaft to rotate through the first transmission assembly.

3. The coal transportation system according to claim 2, characterized in that: The first driving member is constructed as a first driving motor, and the first transmission assembly includes a driving gear, a driven gear and a rack. The driving gear is connected to the rotating shaft of the first driving motor so that the first driving motor drives the driving gear to rotate, and the driven gear is connected to the spiral conveying shaft. The rack is respectively meshed with the driving gear and the driven gear so that the driving gear can drive the driven gear and the spiral conveying shaft connected to the driven gear to rotate through the rack.

4. The coal transportation system according to claim 1, characterized in that: The coal conveying system also includes a first sensor and a controller. The first sensor is arranged at the material drop opening and is used to detect the flow rate of the material flowing through the material drop opening. The first driving member and the first sensor are both connected to the controller signal.

5. The coal transportation system according to claim 1, characterized in that: The coal transportation system also includes a conveying component, which has a first end and a second end relative to each other. The first end of the conveying component is located below the drop port of the coal drop hopper, and the material in the coal drop cavity falls to the first end. The conveying component transports the material at the first end to the second end.

6. The coal transportation system according to claim 5, characterized in that: The conveying assembly comprises a second driving member, a driving wheel, a driven wheel and a conveying belt wound around the driving wheel and the driven wheel.

7. The coal transportation system according to claim 6, characterized in that: The coal conveying system also includes a belt wear detection mechanism for detecting the degree of wear of the conveyor belt.

8. The coal transportation system according to claim 7, characterized in that: The belt wear detection mechanism includes at least one ultrasonic detection component, which includes an ultrasonic generator and an ultrasonic receiver arranged at intervals in the vertical direction, with a gap between the ultrasonic generator and the ultrasonic receiver, and the conveyor belt has an upper conveying section and a lower conveying section, and the lower conveying section can move through the gap.

9. The coal transportation system according to claim 8, characterized in that: The coal conveying system also includes a cleaning mechanism, which is arranged upstream of the belt wear detection mechanism along the moving direction of the conveyor belt and is used to clean materials adhered to the surface of the conveyor belt.

10. The coal transportation system according to any one of claims 1 to 9, characterized in that: The coal conveying system further comprises a frame and a dust detection sensor arranged on the frame. The coal hopper is arranged on the frame. The dust detection sensor is used to detect the dust concentration around the coal hopper.

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