Coal conveying device, coal overflow control method and coal conveying system

Abstract

The invention relates to the technical field of coal mine conveying, and discloses a coal conveying device, a coal overflow control method and a coal conveying system.The coal conveying device comprises a coal falling barrel, a striker plate, a detection assembly and a control assembly; the striker plate is rotatably arranged at the opening of the coal falling barrel; a trigger plate of the detection assembly is rotatably arranged on a shell, a contact alarm structure is connected with the shell, and the two ends of a reset spring are connected with the shell and the trigger plate respectively. The control assembly is electrically connected with the contact alarm structure. In the coal overflow state, the striker plate and the contact alarm structure abut against the two sides of the trigger plate respectively, and in the normal state, the trigger plate and the contact alarm structure are arranged at intervals. Through the arrangement of the material blocking plate, a coal mine firstly makes contact with the material blocking plate and then falls down after falling down, and the situation that after the coal mine falls down, a contact alarm structure is directly and mistakenly touched, and false signal transmission is caused is prevented; and by arranging a reset spring, after the overflow coal is removed, the spring releases elastic potential energy stored in a compressed state, and rapid reset is achieved.

Description

Technical Field

[0001] This invention relates to the field of coal mine conveying technology, specifically to a coal conveying device, a coal spill control method, and a coal conveying system. Background Technology

[0002] In coal mine transportation, coal is conveyed by belt conveyors to the top of the coal chute and then falls into it. During transportation, coal often gets stuck in the coal chute, causing blockages. In such cases, the belt conveyor continues to transport coal, leading to coal overflow from the chute. Currently, coal overflow is only detected by personnel observing the coal chute, increasing the workload of cleanup and impacting safe production.

[0003] In existing technology, contact sensors are installed on the coal chute to detect coal spillage. However, using a single contact sensor can easily lead to accidental activation of the sensor by coal falling into the chute, resulting in false signals, causing the conveyor belt to stop working, and affecting work efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a coal conveying device, a coal spill control method, and a coal conveying system to solve the problem that when coal falls into the mine, it accidentally touches the contact sensor, resulting in false signal transmission, the belt conveyor stops working, and the work efficiency is affected.

[0005] In a first aspect, the present invention provides a coal conveying device, including a coal chute, a baffle plate, a detection component, and a control component; the coal chute has a coal chuting channel, and an opening is provided on the side of the coal chute; the baffle plate is rotatably disposed at the opening; the detection component includes a housing, a trigger plate, a contact alarm structure, and a return spring, the housing is disposed corresponding to the opening, the housing is connected to the coal chute, the trigger plate is rotatably disposed on the housing, the contact alarm structure is connected to the housing, one end of the return spring is connected to the housing, and the other end of the return spring is connected to the side of the trigger plate near the contact alarm structure; the control component is electrically connected to the contact alarm structure, and the control component is adapted to be electrically connected to a belt conveyor; the coal conveying device has a normal state and a coal overflow state, in the coal overflow state, the baffle plate abuts against the trigger plate, the trigger plate abuts against the contact alarm structure, and the return spring is compressed; in the normal state, the trigger plate and the contact alarm structure are spaced apart, and the return spring is extended.

[0006] Beneficial effects: By setting up a baffle plate, the coal mine contacts the baffle plate before falling, preventing the coal mine from directly triggering the alarm contact structure and causing false signal transmission; by setting up a reset spring, after the overflow coal is cleared, the spring releases the elastic potential energy stored in the compressed state, causing the trigger plate to move away from the alarm contact structure, thus achieving quick reset.

[0007] In one optional embodiment, the control component includes a control module and a signal integration module. The control module is electrically connected to the signal integration module, and the signal integration module is electrically connected to the contact alarm structure. The detection component further includes an infrared sensor, which is disposed on the coal chute and electrically connected to the signal integration module. The infrared sensor is adapted to detect the coal flow height.

[0008] Beneficial effects: By setting up an infrared sensor, the signal integration module can simultaneously receive abnormal signals from the contact alarm structure and the infrared sensor. The coal spill status can be confirmed through dual abnormal signals, avoiding subsequent malfunctions caused by false alarms from the contact alarm structure.

[0009] In one optional embodiment, the detection component further includes a vibration frequency sensor disposed on the coal chute and electrically connected to the signal integration module. The vibration frequency sensor is adapted to detect the vibration frequency of the coal chute.

[0010] Beneficial effects: By setting up a vibration frequency sensor, the signal integration module can simultaneously receive abnormal signals from the contact alarm structure and the vibration frequency sensor. The coal spill status can be confirmed through dual abnormal signals, avoiding subsequent malfunctions caused by false alarms from the contact alarm structure.

[0011] In one optional embodiment, the detection component further includes a force sensor disposed on the baffle plate and electrically connected to the signal integration module. The force sensor is adapted to detect the impact force of the coal flow on the baffle plate.

[0012] Beneficial effects: By setting up a force sensor, the signal integration module can simultaneously receive abnormal signals from the contact alarm structure and the force sensor. The coal spill status can be confirmed through dual abnormal signals, avoiding subsequent malfunctions caused by false alarms from the contact alarm structure.

[0013] In one optional implementation, the control component further includes a filtering module, one end of which is electrically connected to the signal integration module and the other end of which is electrically connected to the control module. The filtering module is adapted to eliminate interference signals.

[0014] Beneficial effects: By setting up a filtering module, the signals from multiple sensors and contact alarm structures are filtered, interference signals are eliminated, effective characteristic signals are retained, and interference signals are prevented from causing subsequent malfunctions.

[0015] Secondly, the present invention also provides a coal spill control method, applied to the above-mentioned coal conveying device, comprising the following steps: Step S1, receiving simultaneously an abnormal signal from the contact alarm structure and at least one abnormal signal other than the contact alarm structure through the signal integration module; Step S2, after receiving the abnormal signal, the signal integration module initiates a delay verification; Step S3, if the abnormal signal persists within a predetermined time, the signal integration module transmits control information to the control module, and the control module performs electrical control on the belt conveyor.

[0016] Beneficial effects: The confirmation of dual abnormal signals prevents subsequent misoperations; and by setting a delayed verification step, the instantaneous abnormalities of the sensor or contact alarm structure are avoided, further preventing subsequent misoperations.

[0017] Thirdly, the present invention also provides a coal conveying system, including the aforementioned coal conveying device. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the coal conveying device according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 10. Coal chute; 11. Opening; 20. Baffle plate; 30. Detection component; 31. Housing; 32. Trigger plate; 33. Contact alarm structure; 34. Reset spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0022] The following is combined Figure 1 The following describes embodiments of the present invention.

[0023] According to an embodiment of the present invention, in a first aspect, a coal conveying device is provided, such as... Figure 1As shown, the system includes a coal chute 10, a baffle plate 20, a detection component 30, a control component, and a return spring 34. The coal chute 10 has a coal chutes, and an opening 11 is provided on the side of the coal chute 10. The baffle plate 20 is rotatably mounted at the opening 11. The detection component 30 includes a housing 31, a trigger plate 32, and a contact alarm structure 33. The housing 31 is positioned corresponding to the opening 11 and is connected to the coal chute 10. The trigger plate 32 is rotatably mounted on the housing 31, and the contact alarm structure 33 is connected to the housing 31. The control component... The control component is electrically connected to the contact alarm structure 33 and is suitable for electrical connection to the belt conveyor; one end of the return spring 34 is connected to the housing 31, and the other end of the return spring 34 is connected to the side of the trigger plate 32 near the contact alarm structure 33; the coal conveying device has a normal state and a coal overflow state. In the coal overflow state, the baffle plate 20 abuts against the trigger plate 32, the trigger plate 32 abuts against the contact alarm structure 33, and the return spring 34 is compressed. In the normal state, the trigger plate 32 and the contact alarm structure 33 are spaced apart, and the return spring 34 is extended.

[0024] The coal conveying device of this application, by setting up a baffle plate 20, ensures that the coal mine contacts the baffle plate 20 before falling, preventing the coal mine from directly triggering the contact alarm structure 33 and causing false signal transmission; by setting up a reset spring 34, after the overflow coal is cleared, the spring releases the elastic potential energy stored in the compressed state, causing the trigger plate 32 to move away from the contact alarm structure 33, thus achieving quick reset.

[0025] It should be noted that in related technologies, contact sensors are installed on the coal chute 10 to detect coal spillage. However, installing a contact sensor alone can easily lead to the coal ore accidentally triggering the sensor when falling, resulting in false signal transmission, causing the conveyor belt to stop working, and affecting work efficiency.

[0026] Therefore, by setting up a baffle plate 20, when the coal falls, the baffle plate 20 prevents the coal from directly contacting the contact alarm structure 33, thus avoiding the transmission of false signals.

[0027] Specifically, in the event of coal spillage, the coal mine push-button baffle 20 moves toward the trigger plate 32 outside the opening 11 and presses the trigger plate 32 to make it contact the contact alarm structure 33, triggering an abnormal state. At the same time, the reset spring 34 is gradually compressed by the trigger plate 32 to store elastic potential energy. After the spilled coal is cleared, the spring releases the elastic potential energy stored in the compressed state, causing the trigger plate 32 to move away from the contact alarm structure 33, thus achieving a quick reset.

[0028] In one embodiment, the control component includes a control module and a signal integration module. The control module is electrically connected to the signal integration module, and the signal integration module is electrically connected to the contact alarm structure 33. The detection component 30 also includes an infrared sensor, which is disposed on the coal hopper 10 and electrically connected to the signal integration module. The infrared sensor is suitable for detecting the coal flow height.

[0029] It should be noted that when the coal falls, the baffle plate 20 may be affected by the impact force of the coal and accidentally touch the trigger plate 32, causing the contact alarm structure 33 to issue an abnormal signal. Therefore, in order to avoid the above situation, the coal spill status is confirmed by a dual abnormal signal to avoid misoperation.

[0030] It is worth noting that by setting up an infrared sensor, the signal integration module can simultaneously receive the abnormal signal transmitted by the contact alarm structure 33 and the abnormal signal from the infrared sensor. The coal spill status can be confirmed through the dual abnormal signals, thus avoiding subsequent malfunctions caused by false alarms from the contact alarm structure 33.

[0031] Furthermore, the detection component 30 also includes a vibration frequency sensor, which is disposed on the coal chute 10 and electrically connected to the signal integration module. The vibration frequency sensor is suitable for detecting the vibration frequency of the coal chute 10.

[0032] It is worth noting that by setting a vibration frequency sensor, the signal integration module can simultaneously receive the abnormal signal transmitted by the contact alarm structure 33 and the abnormal signal from the vibration frequency sensor. The coal spill status can be confirmed through the dual abnormal signals, thus avoiding subsequent malfunctions caused by false alarms from the contact alarm structure 33.

[0033] Furthermore, the detection component 30 also includes a force sensor, which is disposed on the baffle plate 20 and electrically connected to the signal integration module. The force sensor is suitable for detecting the impact force of the coal flow on the baffle plate 20.

[0034] It is worth noting that by setting up a force sensor, the signal integration module can simultaneously receive the abnormal signal transmitted by the contact alarm structure 33 and the abnormal signal from the force sensor. The coal spill status can be confirmed through the dual abnormal signals, thus avoiding subsequent malfunctions caused by false alarms from the contact alarm structure 33.

[0035] Furthermore, the control component also includes a filtering module, one end of which is electrically connected to the signal integration module, and the other end of which is electrically connected to the control module. The filtering module is suitable for eliminating interference signals.

[0036] It should be noted that the sensors in the device may collect interference signals. For example, the vibration frequency sensor may collect abnormal signals caused by instantaneous mechanical vibration; electromagnetic interference from the environment may cause the sensor to collect abnormal signals, etc.

[0037] It is worth noting that by setting up a filtering module, the signals from multiple sensors and the contact alarm structure 33 are filtered to eliminate interference signals, retain valid characteristic signals, and prevent interference signals from causing subsequent malfunctions.

[0038] According to an embodiment of the present invention, in a second aspect, a coal spill control method is also provided, applied to the above-mentioned coal conveying device, comprising the following steps: Step S1, receiving simultaneously an abnormal signal from the contact alarm structure 33 and at least one abnormal signal other than the contact alarm structure 33 through a signal integration module; Step S2, after receiving the abnormal signal, the signal integration module initiates a delay verification; Step S3, if the abnormal signal persists within a predetermined time, the signal integration module transmits control information to the control module, and the control module performs electrical control on the belt conveyor.

[0039] By applying the coal spill control method of this application, subsequent misoperation is prevented by confirming dual abnormal signals; and by setting a delayed verification step, the instantaneous abnormality of the sensor or contact alarm structure 33 is avoided, further preventing subsequent misoperation.

[0040] Specifically, in step S1, after receiving the abnormal signal from the contact alarm structure 33, the signal integration module also needs to receive the abnormal signal transmitted by at least one of the infrared sensor, vibration frequency sensor and force sensor to achieve dual or multiple signal confirmation in order to avoid false alarms caused by sensors.

[0041] Specifically, in step S2, after receiving the abnormal signal, the signal integration module initiates a 5-10 second delay verification.

[0042] Specifically, in step S3, if the abnormal signal transmitted by at least one of the infrared sensor, vibration frequency sensor and force sensor persists within a predetermined time, it is determined to be a coal spill state. The control module then controls the belt conveyor to stop the coal mine's transportation supply and prevent the coal spill from worsening.

[0043] According to an embodiment of the present invention, a third aspect also provides a coal conveying system, including the coal conveying device described above.

[0044] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and all such modifications and variations fall within the scope defined by the invention.

Claims

1. A coal conveying device, characterized in that, include: A coal chute (10) has a coal chute channel inside and an opening (11) is provided on the side of the coal chute (10). A baffle plate (20) is rotatably disposed at the opening (11); The detection component (30) includes a housing (31), a trigger plate (32), a contact alarm structure (33), and a reset spring (34). The housing (31) is provided corresponding to the opening (11) and is connected to the coal hopper (10). The trigger plate (32) is rotatably disposed on the housing (31). The contact alarm structure (33) is connected to the housing (31). One end of the reset spring (34) is connected to the housing (31), and the other end of the reset spring (34) is connected to the side of the trigger plate (32) near the contact alarm structure (33). A control component, which is electrically connected to the contact alarm structure (33), and the control component is adapted to be electrically connected to the belt conveyor; The coal conveying device has a normal state and a coal overflow state. In the coal overflow state, the baffle plate (20) abuts against the trigger plate (32), the trigger plate (32) abuts against the contact alarm structure (33), and the reset spring (34) is compressed. In the normal state, the trigger plate (32) and the contact alarm structure (33) are spaced apart, and the reset spring (34) is extended.

2. The coal conveying device according to claim 1, characterized in that, The control component includes a control module and a signal integration module. The control module is electrically connected to the signal integration module, and the signal integration module is electrically connected to the contact alarm structure (33). The detection component (30) also includes an infrared sensor. The infrared sensor is disposed on the coal drop hopper (10) and is electrically connected to the signal integration module. The infrared sensor is suitable for detecting the coal flow height.

3. The coal conveying device according to claim 2, characterized in that, The detection component (30) further includes a vibration frequency sensor, which is disposed on the coal chute (10) and electrically connected to the signal integration module. The vibration frequency sensor is adapted to detect the vibration frequency of the coal chute (10).

4. The coal conveying device according to claim 2, characterized in that, The detection component (30) also includes a force sensor, which is disposed on the baffle plate (20) and electrically connected to the signal integration module. The force sensor is adapted to detect the impact force of the coal flow on the baffle plate (20).

5. The coal conveying device according to claim 2, characterized in that, The control component further includes a filtering module, one end of which is electrically connected to the signal integration module, and the other end of which is electrically connected to the control module. The filtering module is adapted to eliminate interference signals.

6. A method for controlling coal spillage, applied to the coal conveying device according to any one of claims 2 to 5, characterized in that, Including the following steps: Step S1: Simultaneously receive the abnormal signal from the contact alarm structure (33) and at least one abnormal signal other than the contact alarm structure (33) through the signal integration module. Step S2: After receiving an abnormal signal, the signal integration module initiates a delayed verification. Step S3: If the abnormal signal persists within the predetermined time, the signal integration module will transmit the control information to the control module, and the control module will perform electrical control on the belt conveyor.

7. A coal conveying system, characterized in that, The coal conveying device includes any one of claims 1 to 5.

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