Belt conveyor for a slag conveyor

Abstract

The present disclosure relates to a coke crushing system of a slag conveyor and the slag conveyor, the coke crushing system is arranged on the slag conveyor and above a conveying belt for conveying coke blocks, the coke crushing system comprises: an intercepting device, the intercepting device comprises two bases respectively fixed at two ends of the conveying belt and a rotating shaft connected with the two bases, the rotating shaft is arranged above the conveying belt in a spaced manner, the spacing distance between the rotating shaft and the conveying belt is D, and the extending direction of the rotating shaft is arranged perpendicularly to the conveying direction of the conveying belt, for intercepting the coke blocks with a height exceeding D; a crushing device, the crushing device is arranged above the intercepting device; a controller, the controller is connected with the intercepting device and the crushing device respectively, for enabling the coke crushing system to have: a first state, the height of the coke blocks is greater than D, the intercepting device intercepts the coke blocks and transmits a signal to the controller, the conveying belt stops conveying, and the controller controls the crushing device to crush the coke blocks; and a second state, the height of the coke blocks is not greater than D, the conveying belt continues conveying, and the crushing device is in a closed state.

Description

Technical Field

[0001] This disclosure relates to the field of coal processing technology in thermal power plants, and more specifically, to a coke crushing system and a slag remover. Background Technology

[0002] During the combustion process, large coke blocks are produced in the boilers of thermal power plants. These large coke blocks enter the slag well of the scraper-type slag remover and move with the chain to send the slag and coke blocks produced by combustion to the slag bin, and then are transported by truck to other places for disposal.

[0003] Existing scraper-type slag remover systems have the following problems: some large coke lumps produced by boiler combustion cannot be broken up by the sudden cooling when falling into the slag well. Some large coke lumps will enter the slag bin as the slag remover operates. When the coke lumps are too large, they will block the slag remover's gate, making it difficult to clean and break up the large coke lumps. In severe cases, this can cause unplanned reductions in unit output. Currently, scraper-type slag removers lack reliable large coke lump detection devices. Relying solely on video signal observation cannot completely prevent large coke lumps from entering the slag bin. Furthermore, current scraper-type slag removers lack automatic crushing devices. When large coke lumps are detected, the slag remover must be manually stopped, and maintenance personnel must manually break up the coke at the slag remover's incline section. This is time-consuming, labor-intensive, poses operational risks, and affects production efficiency. Summary of the Invention

[0004] The purpose of this disclosure is to provide a coke crushing system and a slag remover for a slag remover, in order to solve the problem of slag bin blockage caused by the inability to automatically detect and crush large coke blocks in the prior art.

[0005] To achieve the above objectives, this disclosure provides a coke crushing system for a slag remover, disposed on the slag remover and located above a conveyor belt for conveying coke blocks, the coke crushing system comprising:

[0006] An interception device includes bases fixed at both ends of the conveyor belt and a rotating shaft connecting the two bases. The rotating shafts are spaced apart above the conveyor belt, and the distance between the rotating shafts and the conveyor belt is D. The extending direction of the rotating shafts is perpendicular to the conveying direction of the conveyor belt. The device is used to intercept the coke block with a height exceeding D.

[0007] A crushing device is disposed above the intercepting device;

[0008] A controller, connected to both the interception device and the crushing device, is used to enable the coke crushing system to have:

[0009] In the first state, the height of the coke block is greater than D. The intercepting device intercepts the coke block and transmits a signal to the controller. The conveyor belt stops transmitting, and the controller controls the crushing device to crush the coke block.

[0010] In the second state, the height of the coke block is no greater than D, the conveyor belt continues to transport the coke, and the crushing device is in the off state.

[0011] Optionally, the interception device further includes first interception claws spaced apart on the rotating shaft, and the extension direction of the first interception claws forms an angle with the extension direction of the rotating shaft. The first interception claws rotate with the rotating shaft. In the first state, the angle between the first interception claws and the conveyor belt is in the range of 0° to 90°. In the second state, the angle between the first interception claws and the conveyor belt is 0°.

[0012] Optionally, a second intercepting claw is provided at each end of the rotating shaft. A limit switch connected to the controller is connected to the second intercepting claw. The extension direction of the second intercepting claw forms an angle with the extension direction of the rotating shaft. In the second state, the angle between the second intercepting claw and the conveyor belt is greater than the angle between the first intercepting claw and the conveyor belt.

[0013] Optionally, the crushing device includes a plurality of spaced-apart drive components and crushing heads respectively disposed on the drive components, the plurality of drive components being connected to drive valves, and the drive valves being connected to the controller.

[0014] Optionally, the driving component is a cylinder, the driving valve is a dual-coil solenoid valve, and the dual coils are respectively connected to both ends of the cylinder.

[0015] Optionally, the coke breaking system further includes a monitoring device, which includes at least a first image monitor disposed above the interception device.

[0016] Optionally, the monitoring device further includes a second image monitor and a temperature monitor, wherein the second image monitor and the temperature monitor are both disposed above the starting end of the conveyor belt.

[0017] Optionally, the defogging system further includes a defogging device, which is located at the first image monitor.

[0018] Optionally, the coke breaking system further includes an alarm device, which is used to ensure that the alarm device is in working condition when the coke breaking system is in the first state.

[0019] According to another aspect of this disclosure, a slag removal machine is provided, including a conveyor belt whose conveying direction is at an angle to the ground and a slag bin disposed at the end of the conveyor belt. The slag removal machine is provided with a coke crushing system, which is the coke crushing system of the slag removal machine described above.

[0020] Through the above technical solution, when a large coke block with a height greater than D appears on the conveyor belt of the slag remover, the interception device can intercept the coke block and transmit the interception signal to the controller. After the controller transmits the coke block interception signal to the crushing device, the crushing device automatically starts to crush the coke block according to the preset program. The interception device can detect the coke block itself through its structure, and the crushing device can crush the coke block itself based on the signal transmitted from the controller. There is no need for operators to constantly monitor the conveyor belt, and there is no need to manually stop the slag remover when a large coke block is detected. It also eliminates the need for maintenance personnel to manually crush the coke block at the slag remover's ramp section. Furthermore, it prevents large coke blocks from falling into the slag bin at the tail of the slag remover and clogging the slag bin inlet, thus affecting subsequent production, saving manpower and resources, and improving production efficiency.

[0021] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of a slag removal machine according to one embodiment of the present disclosure.

[0024] Figure 2 This is a schematic diagram of the interception device of the coke crushing system of a slag remover according to one embodiment of the present disclosure.

[0025] Figure 3 This is a side view of the interception device of the coke crushing system of a slag remover according to one embodiment of the present disclosure.

[0026] Figure 4 This is a schematic diagram of the crushing device of the coke crushing system of a slag remover according to one embodiment of the present disclosure.

[0027] Explanation of reference numerals in the attached figures

[0028] 11-Conveyor belt; 12-Slag bin; 2-Interception device; 21-Base; 22-Rotating shaft; 23-First intercepting claw; 24-Second intercepting claw; 25-Limit switch; 3-Crushing device; 31-Driver; 32-Crushing head; 33-Drive valve; 4-Controller; 41-DCS controller; 42-Industrial television system; 43-Television; 51-First image monitor; 52-Second image monitor; 53-Temperature monitor; 54-Third image monitor; 6-Demisting device; 7-Alarm device; 8-Coke block. Detailed Implementation

[0029] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0030] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" are defined in relation to the actual arrangement direction of the slag remover during use, specifically as follows: Figure 1 The orientation of the drawings is shown. The terms "first," "second," etc., are used to distinguish different parts and do not indicate sequence or importance. Furthermore, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0031] According to one embodiment of this disclosure, such as Figures 1 to 4 As shown, a coke crushing system for a slag remover is provided. The system is mounted on the slag remover and positioned above a conveyor belt 11 used for conveying coke blocks 8. The coke crushing system may include an intercepting device 2, a crushing device 3, and a controller 4. The intercepting device 2 includes bases 21 fixed at both ends of the conveyor belt 11 and a rotating shaft 22 connecting the two bases 21. The rotating shafts 22 are spaced apart above the conveyor belt 11, with a distance D between them. The extension direction of the rotating shafts 22 is perpendicular to the conveying direction of the conveyor belt 11, and they are used to intercept coke blocks 8 with a height exceeding D. The crushing device 3 is positioned above the intercepting device 2. The controller 4 is connected to both the intercepting device 2 and the crushing device 3, enabling the coke crushing system to have at least two states. The first state is the working state of the intercepting device 2 and the crushing device 3. In the first state, the height of the coke block 8 is greater than D. The intercepting device 2 intercepts the coke block 8 and transmits a signal to the controller 4. The conveyor belt 11 stops conveying, and the controller 4 controls the crushing device 3 to crush the coke block 8. The second state is the normal operating state of the slag remover. In the second state, the height of the coke block 8 is not greater than D, the conveyor belt 11 continues to transport, and the crushing device 3 is in the off state.

[0032] It should be noted that the interval distance D here refers to the distance from the lower surface of the rotating shaft 22 to the surface of the conveyor belt 11. That is, when the rotating shaft 22 is cylindrical, the interval distance D is the length of the perpendicular line connecting the center of the cylindrical cross-section (i.e., the rotation center of the rotating shaft 22) to the surface of the conveyor belt 11 minus the radius of the rotating shaft 22. When the rotating shaft 22 is irregularly shaped, the interval distance D is the length of the perpendicular line connecting the rotation center of the rotating shaft 22 to the surface of the conveyor belt 11 minus the maximum length from the rotation center of the rotating shaft 22 to the outer surface of the rotating shaft 22. The controller 4 may include a DCS controller 41 (Distributed Control System), an industrial television system 42, and a television 43, etc., which are not limited in this disclosure.

[0033] Through the above technical solution, when a large coke block 8 with a height greater than D appears on the conveyor belt 11 of the slag remover, the interception device 2 can intercept the coke block 8 and transmit the interception signal to the controller 4. After the controller 4 transmits the interception signal of the coke block 8 to the crushing device 3, the crushing device 3 will automatically start crushing the coke block 8 according to the set program. The interception device 2 can detect the coke block 8 by its structure, and the crushing device 3 can crush it automatically according to the signal transmitted by the controller 4. There is no need for the operator to pay attention to the condition of the conveyor belt 11 at all times. When a large coke block 8 is found, there is no need to manually stop the slag remover. At the same time, it can also save the work of maintenance personnel to manually crush the coke block 8 at the incline section of the slag remover. It can also prevent the large coke block 8 from falling into the slag bin 12 at the tail of the slag remover and blocking the entrance of the slag bin 12, which would affect subsequent production, save manpower and resources, and improve production efficiency.

[0034] Furthermore, such as Figures 1 to 3 As shown, the intercepting device 2 may further include first intercepting claws 23 spaced apart on the rotating shaft 22, with the extension direction of the first intercepting claws 23 forming an angle with the extension direction of the rotating shaft 22. The first intercepting claws 23 rotate with the rotating shaft 22. In the first state, the angle between the first intercepting claws 23 and the conveyor belt 11 can be 0° to 90°. In the second state, the angle between the first intercepting claws 23 and the conveyor belt 11 can be 0°. The first intercepting claws 23 can be steel bars. When the coke block 8 is a small volume coke block with a height less than D, the intercepting device 2 is in an inactive state. At this time, the extension direction of the first intercepting claws 23 is towards the entrance of the conveyor belt 11 from the rotating shaft 22, and the first intercepting claws 23 can be parallel to the conveyor belt 11. When a large, high-volume coke block 8 with a height greater than D appears on the conveyor belt 11, taking the initial angle between the first intercepting claw 23 and the conveyor belt 11 as 0° as an example, if the width of the coke block 8 is greater than the interval between two adjacent first intercepting claws 23, then the coke block 8 will first contact the end of the first intercepting claw 23. If the width of the coke block 8 is less than the interval between two adjacent first intercepting claws 23, then the coke block 8 will first contact the rotating shaft 22 through that interval. If the initial angle between the first intercepting claw 23 and the conveyor belt 11 is greater than 0°, that is, the position where the coke block 8 first contacts may be the middle part of the first intercepting claw 23 or the rotating shaft 22. In either case, the intercepting device 2 will be activated, the rotating shaft 22 will rotate and drive the first intercepting claw 23 to rotate upward. After rotating to a specific angle, it will transmit a signal to the controller 4 and start the crushing device 3. Of course, the specific angle here can be set as needed. It can be any value between 0° and 90°, or it can be greater than that angle. This disclosure does not limit this. The initial angle of the first intercepting claw 23 can also be greater than 0°, as long as the end of the first intercepting claw 23 does not contact the conveyor belt 11. This disclosure does not limit this.

[0035] Furthermore, such as Figures 1 to 3 As shown, a second intercepting claw 24 can be provided at each end of the rotating shaft 22. A limit switch 25 connected to the controller 4 is connected to the second intercepting claw 24. The extension direction of the second intercepting claw 24 forms an angle with the extension direction of the rotating shaft 22. In the second state, the angle between the second intercepting claw 24 and the conveyor belt 11 is greater than the angle between the first intercepting claw 23 and the conveyor belt 11. That is, before the first intercepting claw 23 rotates to a specific angle, the second intercepting claw 24 first rotates to a specific angle. At this time, the limit switch 25 connected to the second intercepting claw 24 will generate a signal and transmit it to the controller 4. The conveyor belt 11 stops conveying, and the crushing device 3 starts to crush the coke block 8.

[0036] According to one embodiment of this disclosure, such as Figures 1 to 4 As shown, the crushing device 3 may include multiple drive components 31 spaced apart and crushing heads 32 respectively mounted on the drive components 31. The multiple drive components 31 are connected to drive valves 33, and the drive valves 33 are connected to controllers 4. The simultaneous driving of multiple drive components 31 to multiple corresponding crushing heads 32 can effectively improve the crushing efficiency of coke 8 and shorten the crushing time. The drive components 31 may be cylinders, electric cylinders, hydraulic cylinders, etc., and this disclosure does not limit them.

[0037] Furthermore, such as Figure 1 and Figure 4 The drive unit 31 shown is a cylinder, which uses compressed air as power to drive the crushing head 32. The drive valve 33 can be a double-coil solenoid valve, and the double coils are respectively connected to the two ends of the cylinder. That is, the drive valve 33 can control the two ends of the drive unit 31 respectively. The operation mode is that the double-coil solenoid valve controls the air supply and air extraction at the air inlets at both ends of the cylinder respectively, so as to manipulate the reciprocating motion of the cylinder and enhance the crushing effect.

[0038] According to one embodiment of this disclosure, such as Figure 1 and Figure 2 As shown, the coke crushing system may also include a monitoring device, which includes at least a first image monitor 51, positioned above the interception device 2. The first image monitor 51 can be a camera, allowing operators to observe the coke block 8 at the interception device 2 in real time. When the crushing device 3 fails to completely crush the coke block 8, the first image monitor 51 can provide real-time feedback on the situation at the interception device 2, which is then displayed on the television 43 in the controller 4. Operators can promptly detect this situation and control the crushing device 3 to continue crushing the coke block 8 via the controller 4.

[0039] Furthermore, such as Figure 1 and Figure 2As shown, the monitoring device may also include a second image monitor 52 and a temperature monitor 53, both of which are positioned above the starting end of the conveyor belt 11. The temperature monitor 53 can be an infrared detector, and the second image monitor 52 can be a camera. When the temperature monitor 53 detects that the temperature of the coke block 8 exceeds 100°C, it will generate an alarm signal, indicating that the coke block 8 has not been completely cooled by the water in the slag well of the slag remover. The operator can determine whether the conveyor belt 11 needs to be stopped or whether the crushing device 3 needs to be started subsequently by monitoring the real-time status of the second image monitor 52 fed back by the television 43.

[0040] In addition, the monitoring device may also include a third image monitor 54, which can be set above the end of the conveyor belt 11, that is, above the entrance of the slag bin 12. The third image monitor 54 can be a camera to observe in real time whether there is a blockage at the entrance of the slag bin 12. The real-time situation captured by the third image monitor 54 fed back by the television 43 is used to determine whether it is necessary to stop the conveyor belt 11 to clean the entrance of the slag bin 12.

[0041] According to one embodiment of this disclosure, such as Figure 1 and Figure 2 As shown, the coke crushing system may also include a defogging device 6, which is located at the first image monitor 51. The defogging device 6 can be an axial flow fan. When the ambient temperature is low in winter, the hot, water-containing coke blocks 8 will quickly condense into fog upon encountering cold air, affecting the settings at the first image monitor 51 and making the situation of the coke blocks 8 at the interception device 2 unclear. At this time, the operator will manually start the defogging device 6 to remove the fog. When the water vapor on site is observed to decrease through the first image monitor 51, the operation of the defogging device 6 can be manually stopped.

[0042] According to one embodiment of this disclosure, such as Figure 1 As shown, the coke crushing system also includes an alarm device 7, which can be a sound and light alarm that emits both sound and light simultaneously. The alarm device 7 is activated when the coke crushing system is in its first state. Two alarm devices 7 can be installed, one at the beginning and one at the end of the conveyor belt 11. In the first state, both the interception device 2 and the crushing device 3 are activated. To prevent injury to personnel on site, the alarm device 7 will continuously emit an alarm signal, reminding personnel not to approach the area.

[0043] According to another aspect of this disclosure, a slag removal machine can also be provided, such as Figure 1As shown, the slag remover may include a conveyor belt 11 whose conveying direction is at an angle to the ground and a slag bin 12 located at the end of the conveyor belt 11. The slag remover is equipped with a coke crushing system. The intercepting device 2 may be installed on the conveyor belt 11. The remaining parts of the coke crushing system may be connected to the scraper of the slag remover, or to the housing of the slag remover, or may be separately mounted on a bracket above the conveyor belt 11. This disclosure does not limit this. The coke crushing system is the coke crushing system of the slag remover described above and includes all the beneficial effects of the coke crushing system of the slag remover, which will not be elaborated here.

[0044] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0045] 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, this disclosure will not describe the various possible combinations separately.

[0046] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A coke crushing system for a slag remover, characterized in that, The coke crushing system, mounted on a slag remover and positioned above a conveyor belt for conveying coke blocks, comprises: An interception device includes bases fixed at both ends of the conveyor belt and a rotating shaft connecting the two bases. The rotating shafts are spaced apart above the conveyor belt, and the distance between the rotating shafts and the conveyor belt is D. The extending direction of the rotating shafts is perpendicular to the conveying direction of the conveyor belt. The device is used to intercept the coke block with a height exceeding D. A crushing device is disposed above the intercepting device; A controller, connected to both the interception device and the crushing device, is used to enable the coke crushing system to have: In the first state, the height of the coke block is greater than D. The intercepting device intercepts the coke block and transmits a signal to the controller. The conveyor belt stops transmitting, and the controller controls the crushing device to crush the coke block. In the second state, the height of the coke block is no greater than D, the conveyor belt continues to transport the coke, and the crushing device is in the off state. The intercepting device further includes first intercepting claws spaced apart on the rotating shaft, with the extending directions of the first intercepting claws forming an angle with the extending direction of the rotating shaft. The first intercepting claws rotate with the rotating shaft. In the first state, the angle between the first intercepting claws and the conveyor belt ranges from 0° to 90°. In the second state, the angle between the first intercepting claws and the conveyor belt is 0°. The rotating shaft is provided with a second intercepting claw at each end. The extension direction of the second intercepting claw is at an angle to the extension direction of the rotating shaft. In the second state, the angle between the second intercepting claw and the conveyor belt is greater than the angle between the first intercepting claw and the conveyor belt.

2. The coke crushing system of the slag remover according to claim 1, characterized in that, The second intercepting claw is connected to a limit switch that is connected to the controller.

3. The coke crushing system of the slag remover according to claim 1, characterized in that, The crushing device includes multiple drive components spaced apart and crushing heads respectively disposed on the drive components. The multiple drive components are connected to drive valves, and the drive valves are connected to the controller.

4. The coke crushing system of the slag remover according to claim 3, characterized in that, The driving component is a cylinder, and the driving valve is a dual-coil solenoid valve, with the dual coils respectively connected to both ends of the cylinder.

5. The coke crushing system of the slag remover according to claim 1, characterized in that, The coke breaking system also includes a monitoring device, which includes at least a first image monitor positioned above the interception device.

6. The coke crushing system of the slag remover according to claim 5, characterized in that, The monitoring device also includes a second image monitor and a temperature monitor, wherein the second image monitor and the temperature monitor are both located above the starting end of the conveyor belt.

7. The coke crushing system of the slag remover according to claim 5, characterized in that, The defogging system also includes a defogging device, which is located at the first image monitor.

8. The coke crushing system of the slag remover according to claim 1, characterized in that, The coke-breaking system also includes an alarm device, which is used to ensure that the alarm device is in working condition when the coke-breaking system is in the first state.

9. A slag removal machine, characterized in that, The device includes a conveyor belt whose conveying direction is at an angle to the ground and a slag bin located at the end of the conveyor belt. The slag remover is equipped with a coke crushing system, which is the coke crushing system of the slag remover as described in any one of claims 1-8.

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