CN110371615B - Coal blocking detection device of coal conveying belt conveyor - Google Patents
Coal blocking detection device of coal conveying belt conveyor Download PDFInfo
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- CN110371615B CN110371615B CN201910704871.4A CN201910704871A CN110371615B CN 110371615 B CN110371615 B CN 110371615B CN 201910704871 A CN201910704871 A CN 201910704871A CN 110371615 B CN110371615 B CN 110371615B
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- conveying belt
- detection
- detection device
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- 239000003245 coal Substances 0.000 title claims abstract description 161
- 238000001514 detection method Methods 0.000 title claims abstract description 85
- 230000000903 blocking effect Effects 0.000 title claims description 24
- 230000002159 abnormal effect Effects 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 abstract description 12
- 238000003912 environmental pollution Methods 0.000 abstract description 7
- 230000000295 complement effect Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 13
- 238000002955 isolation Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/045—Sand, soil and mineral ore
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- Control Of Conveyors (AREA)
Abstract
The invention discloses a coal blockage detection device of a coal conveying belt conveyor, which comprises a coal conveying belt conveyor for feeding and a coal conveying belt conveyor for conveying coal, wherein a blanking hopper is arranged between the coal conveying belt conveyor and the coal conveying belt conveyor; and detection areas for detecting coal blockage are respectively arranged on two sides in the blanking pipe. The beneficial effects are that: according to the invention, through integrating multiple alternative detection and complementary detection of coal blockage, false alarm can be effectively avoided, the damage of the belt conveyor caused by accumulation of coal on the belt conveyor when the coal is blocked in the blanking pipe is prevented, the environmental pollution and economic loss caused by leakage of the coal when the coal is blocked are also prevented, the interference from the outside is small, and the coal blockage detection device can reliably work in a severe field environment.
Description
Technical Field
The invention relates to the technical field of coal conveying systems, in particular to a coal blockage detection device of a coal conveying belt conveyor.
Background
In thermal power generation, coal is required to be conveyed through a belt conveyor, in the coal conveying process, a belt coal conveyor is often utilized, a blanking hopper is arranged at the head of the belt coal conveyor in the mode, and when the blanking hopper is blocked, a coal blocking alarm signal is required to be sent out in time to stop belt operation, so that the method is one of important protection of the belt conveyor of a coal conveying system and plays an important role in preventing belt breakage and motor overload caused by coal accumulation of a coal dropping pipe.
The original design blanking hopper jam detection device is structurally characterized in that a side door is arranged on the side wall of a blanking hopper, the upper portion of the side door is hinged to the outer side of the blanking hopper, when a material is jammed, the material gives pressure to the side wall of the blanking hopper, the rotating side door of the side wall of the blanking hopper is pushed outwards, when the rotating side door touches a proximity switch, the proximity switch outwards sends out a blanking hopper jam alarm signal, the signal is transmitted to a PLC control system, the PLC control system sends out a stop command to a coal conveying belt conveyor to stop belt operation, in the existing control logic, the PLC control program design has delay control, and the control system judges that the blanking hopper is jammed only when the blanking hopper jam signal is continuously kept for more than 3 seconds, so that a belt stop command is sent.
The induction surface of the existing door type blanking hopper blockage detection device is in the thickness direction of the side door, if the blockage is fast when the blanking hopper is blocked on the movable side door and suddenly and rapidly opened, when the side door passes through the surface of the proximity switch, the blanking hopper blockage detection device sends out a short alarm signal due to the small thickness of the side door, and the requirement of a control system for continuously keeping the alarm for 3 seconds cannot be met, so that the control system cannot send out a stop command, and even if the blanking hopper is blocked on site, the belt cannot stop in time.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the problems in the related art, the invention aims to provide the coal blockage detection device of the coal conveying belt conveyor, which can not only effectively avoid false alarm generation by integrating multiple coal blockage detection alternation and complementary detection, but also prevent the belt conveyor from being damaged due to accumulation of coal on the belt conveyor when the coal is blocked in a blanking pipe, and also prevent environmental pollution and economic loss caused by leakage of the coal when the coal is blocked, has small external interference, and can reliably work in severe field environment so as to overcome the technical problems in the related art.
The technical scheme of the invention is realized as follows:
The coal blockage detection device comprises a coal conveying belt conveyor for conveying coal and a coal conveying belt conveyor for conveying coal, wherein a blanking hopper is arranged between the coal conveying belt conveyor and the coal conveying belt conveyor, the blanking hopper comprises a receiving hopper and a blanking pipe, the blanking pipe is arranged below the receiving hopper, and the receiving hopper and the blanking pipe are respectively of a cavity structure which are mutually communicated, wherein the blanking pipe is arranged below the receiving hopper;
The coal blocking detection device comprises a blanking pipe, a coal blocking detection device and a coal blocking detection device, wherein detection areas for detecting coal blocking are respectively arranged on two sides in the blanking pipe, each detection area comprises a separation part connected to the side wall of the blanking pipe and a buffer part positioned at the bottom end of the detection area, an accommodating area communicated with the blanking pipe is formed between the separation part and the buffer part, and each buffer part is of a circular arc structure;
The top end of the detection area is provided with a detection chamber, two sides in the detection chamber are respectively provided with a warning trigger switch and an abnormal trigger switch which are arranged in a matching way, and the abnormal trigger switch is positioned below the warning trigger switch;
an operation plate is arranged in the detection chamber, and trigger spring plates matched with the warning trigger switch and the abnormal trigger switch are arranged on two sides of the operation plate respectively;
the bottom end of the operation plate is connected with a support rod, the bottom end of the support rod penetrates through the detection chamber and extends into the detection area, and a push plate is arranged in the detection area where the support rod is positioned;
And the two sides of the detection area and the side of the support rod are provided with an infrared emitter and a receiver for receiving infrared signals, which are matched with each other.
Further, the coal feeding belt conveyor monitoring system also comprises a monitoring center for receiving a coal blocking instruction and stopping the coal feeding belt conveyor, wherein the warning trigger switch and the abnormal trigger switch are respectively connected with an alarm through a relay.
Further, the infrared transmitter and the receiver form a loop and are connected with the monitoring center.
Furthermore, the push plate is of an inclined structure, and the push plate combination at two sides is of a splayed structure.
The invention has the beneficial effects that:
1. According to the invention, the coal conveying system is realized through the coal conveying belt conveyor, the coal conveying belt conveyor and the blanking hopper, when the coal blocking phenomenon of the coal blanking hopper occurs, the coal blocks are naturally accumulated in the detection areas at two sides, when the coal accumulation is more, the extrusion force to one side of the push plate can be generated, so that the upward movement of the supporting rod linkage operation plate is realized, the corresponding signal loop is formed when the triggering spring plate contacts the warning trigger switch and the abnormal trigger switch respectively, the coal blocking detection is realized, the damage of the belt conveyor caused by accumulation of the coal on the belt conveyor when the coal is blocked in the blanking pipe is prevented, and the environmental pollution and economic loss caused by leakage of the coal when the coal is blocked are also prevented.
2. According to the invention, through the design of the integrated isolation part and the buffer part in the detection area, the accumulation of coal materials produced by natural blanking is avoided, the interference from the outside is small, and the coal material can reliably work in a severe field environment.
3. According to the invention, the infrared emitter and the receiver are built in the detection area, the signal loop is realized without shielding by foreign matters in the natural state, the signal loop is shielded when the coal materials are piled up, the coal blockage phenomenon occurs when the coal materials cannot be received by the receiver, the monitoring center is used for carrying out emergency braking on the coal conveying belt conveyor, equipment damage caused by blockage of the coal materials in the blanking pipe is timely prevented, the isolation part can effectively avoid interference of natural coal falling on the infrared emitter, and in addition, false alarm is effectively avoided through alternation and complementary detection of the infrared emitter and the triggering spring piece.
In summary, the invention integrates multiple alternative coal blockage detection and complementary detection, thereby not only effectively avoiding false alarm, but also preventing the belt conveyor from being damaged due to accumulation of coal on the belt conveyor when the coal is blocked in the blanking pipe, and also preventing environmental pollution and economic loss caused by leakage of the coal when the coal is blocked, having small external interference and being capable of reliably working in severe field environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a coal blocking detection device of a coal conveying belt conveyor according to an embodiment of the invention;
Fig. 2 is an enlarged schematic view at a in fig. 1.
In the figure:
1. A coal feeding belt conveyor; 2. a coal conveying belt conveyor; 3. a blanking hopper; 4. a receiving hopper; 5. a blanking pipe; 6. A detection zone; 7. an isolation part; 8. a buffer section; 9. a detection chamber; 10. an alert trigger switch; 11. an abnormal trigger switch; 12. an operation plate; 13. triggering a spring plate; 14. a support rod; 15. a push plate; 16. an infrared emitter; 17. a receiver.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
According to the embodiment of the invention, a coal blockage detection device of a coal conveying belt conveyor is provided.
According to the embodiment of the invention, a coal blockage detection device of a coal conveying belt conveyor is provided.
Example 1
As shown in fig. 1-2, a first embodiment of the present invention is:
The utility model provides a coal conveyor coal blocking detection device, includes the coal conveyor 1 that is used for the pay-off and is used for carrying the coal conveyor 2 of coal charge, is located coal conveyor 1 with be equipped with blanking fill 3 between the coal conveyor 2, blanking fill 3 includes receiving hopper 4 and blanking pipe 5, blanking pipe 5 is located the below of receiving hopper 4, just receiving hopper 4 with blanking pipe 5 is the cavity structure of intercommunication each other respectively, wherein;
The two sides in the blanking pipe 5 are respectively provided with a detection area 6 for detecting coal blockage, the detection area 6 comprises a separation part 7 connected to the side wall of the blanking pipe 5 and a buffer part 8 positioned at the bottom end of the detection area 6, a containing area communicated with the blanking pipe 5 is formed between the separation part 7 and the buffer part 8, and the buffer part 8 is of a circular arc structure;
the top end of the detection area 6 is provided with a detection chamber 9, two sides in the detection chamber 9 are respectively provided with a warning trigger switch 10 and an abnormal trigger switch 11 which are arranged in a matching way, and the abnormal trigger switch 11 is positioned below the warning trigger switch 10;
An operation plate 12 is arranged in the detection chamber 9, and trigger spring plates 13 matched with the warning trigger switch 10 and the abnormal trigger switch 11 are respectively arranged on two sides of the operation plate 12;
The bottom end of the operation plate 12 is connected with a support rod 14, the bottom end of the support rod 14 penetrates through the detection chamber 9 and extends into the detection area 6, and a push plate 15 is arranged in the detection area 6 and positioned in the support rod 14;
The two sides of the detection area 6 and the side of the support rod 14 are provided with an infrared emitter 16 and a receiver 17 which are matched with each other and are used for receiving infrared signals.
By means of the technical scheme, the coal conveying system is realized through the coal conveying belt conveyor 1, the coal conveying belt conveyor 2 and the blanking hopper 3, when the coal blocking phenomenon of the coal discharging hopper 3 occurs, coal blocks can be naturally accumulated in the detection areas 6 on two sides, extrusion force to one side of the push plate 15 can be produced when the coal accumulation is more, so that the supporting rod 14 is linked with the operation plate 12 to move upwards, corresponding signal loops are formed when the triggering spring 13 is respectively contacted with the warning trigger switch 10 and the abnormal triggering switch 11, coal blocking detection is realized, the coal blocking is prevented, the coal is prevented from being accumulated on the belt conveyor to cause damage of the belt conveyor when the coal is blocked in the blanking pipe 5, environmental pollution and economic loss caused by leakage of the coal when the coal is blocked are also prevented, in addition, the coal accumulation produced by natural discharging is avoided through the design of the detection areas 6 through the integrated isolating parts 7 and the buffer parts 8, the interference from the outside is small, and reliable work can be realized in a severe field environment.
In the above scheme, the coal feeding belt conveyor further comprises a monitoring center for receiving the coal blocking instruction and stopping the coal feeding belt conveyor 1, and the warning trigger switch 10 and the abnormal trigger switch 11 are respectively connected with an alarm through a relay. The infrared transmitter 16 and the receiver 17 form a loop and are connected with the monitoring center. Through building infrared emitter 16 and receiver 17 under the natural state in detection area 6 and not having the foreign matter to shelter from and realize signal return circuit, can shelter from signal return circuit when the coal material appears piling up, the receiver 17 appears and just appears blocking up the coal phenomenon when can not receiving infrared emitter 16 signal, carry out emergency braking to coal conveyor 1 through the monitoring center, in time prevent the coal material from blocking up the equipment damage that causes in blanking pipe 5, and isolation part 7 can effectively avoid natural falling coal to the interference of infrared emitter 16, in addition through the alternating and complementary detection of infrared emitter 16 and trigger shell fragment 13, effectively avoid the false alarm.
In order to better realize that the pushing plate 15 can produce extrusion force to one side of the pushing plate 15 when more coal is accumulated, the pushing plate 15 is of an inclined structure, and the pushing plates 15 at two sides are combined to form a splayed structure.
In practical application, when the trigger spring 13 and the abnormal trigger switch 11 form a trigger signal loop, and the receiver 17 cannot receive the emission signal of the infrared emitter 16, the coal blockage occurs, and when the detection occurs, one or both of the two signals are coal blockage, and in addition, the trigger signal formed by the operation plate 12 and the warning trigger switch 10 can be a warning coal blockage signal.
In summary, by means of the above technical solution of the present invention, the following effects can be achieved:
1. According to the invention, a coal conveying system is realized through the coal conveying belt conveyor 1, the coal conveying belt conveyor 2 and the blanking hopper 3, when the coal blocking phenomenon of the blanking hopper 3 occurs, coal blocks can be naturally accumulated in the detection areas 6 at two sides, when the coal is accumulated more, extrusion force to one side of the push plate 15 can be generated, so that the supporting rod 14 is linked with the operation plate 12 to move upwards, corresponding signal loops are formed when the triggering spring 13 is respectively contacted with the warning trigger switch 10 and the abnormal trigger switch 11, the coal blocking detection is realized, the belt conveyor is prevented from being damaged due to accumulation of the coal on the belt conveyor when the coal is blocked in the blanking pipe 5, and environmental pollution and economic loss caused by leakage of the coal when the coal is blocked are prevented.
2. According to the invention, through the design of the detection area 6 through the integrated isolation part 7 and the buffer part 8, the accumulation of coal materials produced by natural blanking is avoided, the interference from the outside is small, and the reliable work can be realized in a severe field environment.
3. According to the invention, the infrared emitter 16 and the receiver 17 are built in the detection area 6, a signal loop is realized without shielding by foreign matters in a natural state, when coal materials are piled up, the signal loop is shielded, the receiver 17 is in an emergency braking state when the coal blockage phenomenon occurs when the coal materials cannot be received by the infrared emitter 16, the monitoring center is used for carrying out emergency braking on the coal conveying belt conveyor 1, equipment damage caused by the blockage of the coal materials in the blanking pipe 5 is timely prevented, the isolation part 7 can effectively avoid the interference of natural coal falling on the infrared emitter 16, and in addition, false alarm is effectively avoided through the alternation and complementation detection of the infrared emitter 16 and the triggering spring piece 13.
In summary, by integrating multiple alternative coal blockage detection and complementary detection, false alarm can be effectively avoided, damage to the belt conveyor caused by accumulation of coal on the belt conveyor when the coal is blocked in the blanking pipe 5 is prevented, environmental pollution and economic loss caused by leakage of the coal when the coal is blocked are also prevented, and the coal blockage detection device is small in external interference and can reliably work in a severe field environment.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The coal conveying belt conveyor coal blocking detection device comprises a coal conveying belt conveyor (1) for conveying coal and a coal conveying belt conveyor (2) for conveying coal, wherein a blanking hopper (3) is arranged between the coal conveying belt conveyor (1) and the coal conveying belt conveyor (2), and the coal conveying belt conveyor coal blocking detection device is characterized in that the blanking hopper (3) comprises a receiving hopper (4) and a blanking pipe (5), the blanking pipe (5) is positioned below the receiving hopper (4), and the receiving hopper (4) and the blanking pipe (5) are respectively of mutually communicated cavity structures, wherein;
the coal blocking detection device is characterized in that detection areas (6) for detecting coal blocking are respectively arranged on two sides in the blanking pipe (5), each detection area (6) comprises a separation part (7) connected to the side wall of the blanking pipe (5) and a buffer part (8) positioned at the bottom end of each detection area (6), a containing area communicated with the blanking pipe (5) is formed between each separation part (7) and each buffer part (8), and each buffer part (8) is of a circular arc structure;
The detection device is characterized in that a detection chamber (9) is arranged at the top end of the detection zone (6), a warning trigger switch (10) and an abnormal trigger switch (11) which are arranged in a matching manner are respectively arranged at two sides in the detection chamber (9), and the abnormal trigger switch (11) is positioned below the warning trigger switch (10);
An operation plate (12) is arranged in the detection chamber (9), and trigger spring plates (13) which are respectively matched with the warning trigger switch (10) and the abnormal trigger switch (11) are arranged on two sides of the operation plate (12);
the bottom end of the operation plate (12) is connected with a supporting rod (14), the bottom end of the supporting rod (14) penetrates through the detection chamber (9) and extends into the detection area (6), and a pushing plate (15) is arranged in the detection area (6) and positioned by the supporting rod (14);
and infrared emitters (16) and receivers (17) which are matched with each other and used for receiving infrared signals are arranged on two sides of the detection area (6) and positioned on one side of the supporting rod (14).
2. The coal blockage detection device of the coal conveying belt conveyor according to claim 1, further comprising a monitoring center for receiving a coal blockage instruction and stopping the coal conveying belt conveyor (1), wherein the warning trigger switch (10) and the abnormal trigger switch (11) are respectively connected with an alarm through a relay.
3. A coal conveyor belt plugging detection device according to claim 2, wherein the infrared transmitter (16) and the receiver (17) form a loop and are connected with the monitoring center.
4. The coal blockage detection device for the coal conveying belt conveyor according to claim 1, wherein the pushing plate (15) is of an inclined structure, and the pushing plates (15) on two sides are combined to form a splayed structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910704871.4A CN110371615B (en) | 2019-07-30 | 2019-07-30 | Coal blocking detection device of coal conveying belt conveyor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910704871.4A CN110371615B (en) | 2019-07-30 | 2019-07-30 | Coal blocking detection device of coal conveying belt conveyor |
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| Publication Number | Publication Date |
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| CN110371615A CN110371615A (en) | 2019-10-25 |
| CN110371615B true CN110371615B (en) | 2024-05-28 |
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| CN201910704871.4A Active CN110371615B (en) | 2019-07-30 | 2019-07-30 | Coal blocking detection device of coal conveying belt conveyor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111498414B (en) * | 2020-04-02 | 2021-04-20 | 烟台汽车工程职业学院 | Conveying device of automobile electronic assembly line |
| CN114313886A (en) * | 2021-11-22 | 2022-04-12 | 大唐渭南热电有限公司 | Coal pipe coal scattering detection device and coal conveying equipment in thermoelectric production |
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| CN103213826A (en) * | 2013-05-07 | 2013-07-24 | 河北大唐国际张家口热电有限责任公司 | Blocked material detection device of three-way coal chute |
| CN203283806U (en) * | 2013-05-27 | 2013-11-13 | 莱芜钢铁集团有限公司 | Anti-blocking device of material conveying funnel |
| CN205034709U (en) * | 2015-07-16 | 2016-02-17 | 大唐贵州野马寨发电有限公司 | Coal conveying system chute blockage detection device |
| CN206351927U (en) * | 2016-12-19 | 2017-07-25 | 天津钢管集团股份有限公司 | Material-blockage preventing device |
| CN210437982U (en) * | 2019-07-30 | 2020-05-01 | 合肥市信同信息科技有限公司 | Coal conveying belt feeder coal blockage detection device |
-
2019
- 2019-07-30 CN CN201910704871.4A patent/CN110371615B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06255749A (en) * | 1993-03-04 | 1994-09-13 | Onoda Cement Co Ltd | Device for detecting powder clogging of cyclone chute |
| CN103213826A (en) * | 2013-05-07 | 2013-07-24 | 河北大唐国际张家口热电有限责任公司 | Blocked material detection device of three-way coal chute |
| CN203283806U (en) * | 2013-05-27 | 2013-11-13 | 莱芜钢铁集团有限公司 | Anti-blocking device of material conveying funnel |
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| CN210437982U (en) * | 2019-07-30 | 2020-05-01 | 合肥市信同信息科技有限公司 | Coal conveying belt feeder coal blockage detection device |
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