CN119898644A - A foreign body inspection and cleaning device for coal conveyor belt in power station - Google Patents
A foreign body inspection and cleaning device for coal conveyor belt in power station Download PDFInfo
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- CN119898644A CN119898644A CN202510409181.1A CN202510409181A CN119898644A CN 119898644 A CN119898644 A CN 119898644A CN 202510409181 A CN202510409181 A CN 202510409181A CN 119898644 A CN119898644 A CN 119898644A
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- Prior art keywords
- receiving hopper
- shield
- power station
- cleaning device
- coal
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- 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
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
- B65G69/185—Preventing escape of dust by means of non-sealed systems
- B65G69/186—Preventing escape of dust by means of non-sealed systems with aspiration means
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- 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
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
-
- 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
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/14—Pulverising loaded or unloaded materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
本发明公开了一种电站输煤皮带异物检查清理装置，涉及煤炭输送技术领域，包括防尘单元，包括导料槽、安装于导料槽上方开口位置的护罩、设置于护罩居中位置的接料斗，以及用于将护罩与接料斗相连接的连接杆；过滤单元，过滤单元安装于护罩顶部开口位置，护罩顶部开口区域通过过滤单元形成负压，进而实现对杂质的吸入；过滤单元与接料斗位置相对应，接料斗用于存储煤灰及杂质。通过设置的过滤单元可以有效的防止煤灰和杂质进入风管内部，同时还可以有效地保证吸风的效率；过滤单元的下方还安装有接料斗，通过接料斗可便于对杂质及煤灰进行集中统一处理，更好地便于工作人员完成对杂质的清理工作。
The present invention discloses a foreign body inspection and cleaning device for a coal conveyor belt of a power station, which relates to the technical field of coal transportation, and comprises a dust prevention unit, including a material guide trough, a protective cover installed at an opening position above the material guide trough, a receiving hopper arranged at a central position of the protective cover, and a connecting rod for connecting the protective cover with the receiving hopper; a filter unit, the filter unit is installed at an opening position at the top of the protective cover, and a negative pressure is formed in the opening area at the top of the protective cover through the filter unit, thereby realizing the suction of impurities; the filter unit corresponds to the position of the receiving hopper, and the receiving hopper is used to store coal ash and impurities. The filter unit can effectively prevent coal ash and impurities from entering the air duct, and at the same time, the efficiency of air suction can be effectively guaranteed; a receiving hopper is also installed below the filter unit, and the receiving hopper can facilitate the centralized and unified treatment of impurities and coal ash, so as to better facilitate the staff to complete the cleaning of impurities.
Description
Technical Field
The invention relates to the field of coal conveying, in particular to a foreign matter inspection and cleaning device for a power station coal conveying belt.
Background
In coal-fired power plants and industrial coal conveying systems, negative pressure dust removal equipment matched with a guide chute of a belt conveyor is important to control coal powder diffusion. However, the prior art has the obvious defect that when a train discharges coal, foreign matters such as woven bag fragments, plastic films and the like mixed in coal flow are easy to enter a guide chute area along with the coal flow. Under the action of high-speed airflow at the tail of the belt, the light foreign matters are easy to be sucked into an air inlet pipeline of the dust remover, so that a filter bag or a pipeline at an air inlet is locally blocked, the negative pressure of a dust removing system is unbalanced, and the dust collecting efficiency is suddenly reduced.
Under the state, the high-concentration coal ash overflowed from the sealing failure area of the guide chute directly pollutes the working environment, the respiratory disease risk of operators is increased, a visual shielding effect is formed in a coal conveying trestle, the identification of abnormal working conditions such as belt deviation and coal blockage by manual inspection and video monitoring equipment is seriously interfered, and more seriously, operators face multiple safety threats such as mechanical entanglement and high-altitude falling when trying to clean foreign matters in the guide chute during the operation of the belt.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem that equipment is easy to fail due to untimely foreign matter cleaning in the existing coal conveying process.
The technical problem is solved by the following technical scheme that the invention provides a foreign matter inspection and cleaning device for a coal conveying belt of a power station, which comprises a guide chute, a shield arranged at an opening position above the guide chute, a receiving hopper arranged at the center of the shield, and a connecting rod for connecting the shield and the receiving hopper;
the filter unit comprises a filter bag and a pulse controller for cleaning pulverized coal on the surface of the filter bag, and is arranged at the top opening position of the shield, and the top opening area of the shield forms negative pressure through the filter unit so as to realize the inhalation of impurities;
the filtering unit corresponds to the receiving hopper in position, the receiving hopper is used for storing coal ash and impurities, and a pressure sensor is arranged in the receiving hopper;
The connecting rod including set up in the cutting knife of connecting rod bottom, the cutting knife can carry out broken with plastic film.
In a preferred embodiment of the power station coal conveying belt foreign matter inspection and cleaning device of the invention, the cleaning device comprises:
A baffle plate is arranged in the shield, and divides the interior of the shield into an upper chamber and a lower chamber;
The receiving hopper is positioned in the lower chamber, and the filtering unit is positioned in the upper chamber;
The baffle is provided with a through hole in the middle position, and the upper cavity and the lower cavity are communicated by the through hole.
In a preferred embodiment of the device for checking and cleaning foreign matters on the coal conveying belt of the power station, the receiving hopper is of a conical structure with a closed bottom and an open top, and the opening direction of the receiving hopper is opposite to the through hole;
the quantity of connecting rods is multiple groups, and the multiple groups of connecting rods are distributed at equal intervals along the edge position of the opening of the receiving hopper.
In a preferred embodiment of the foreign matter inspection and cleaning device for the coal conveying belt of the power station, the cutting blade opening faces to the bottom of the receiving hopper.
In a preferred embodiment of the device for checking and cleaning foreign matters on a coal conveying belt of a power station, the receiving hopper comprises a guide surface arranged on the side wall of the receiving hopper, an arc surface arranged at the bottom of the receiving hopper and a dividing knife arranged on the surface of the guide surface;
the number of the dividing cutters is multiple, and the dividing cutters are distributed along the diversion surface at equal intervals.
In an optimal implementation mode of the foreign matter inspection and cleaning device for the coal conveying belt of the power station, an observation window is formed in the side wall of the protective cover, and a movable cover plate is arranged on the observation window.
In a preferred embodiment of the device for checking and cleaning foreign matters on the coal conveying belt of the power station, guide plates are arranged on two sides of the through hole, and the bottoms of the guide plates extend into the through hole;
The guide plates are obliquely arranged and staggered with the cross sections of the partition plates.
In a preferred embodiment of the foreign matter inspection and cleaning device for the coal conveying belt of the power station, a conveyor belt is provided with the guide chute above the conveyor belt;
And one end of the connecting pipeline is communicated with the position of the opening at the top of the shield, and the other end of the connecting pipeline is connected with a suction fan.
The air suction device has the beneficial effects that the coal ash and impurities can be effectively prevented from entering the air pipe through the arranged filtering unit, meanwhile, the air suction efficiency can be effectively ensured, the receiving hopper is further arranged below the filtering unit, the impurities and the coal ash can be conveniently and uniformly treated in a concentrated mode through the receiving hopper, and the cleaning work of the impurities can be better facilitated for workers.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description will briefly explain the drawings of the embodiments of the present invention. It will be apparent that the figures in the following description relate only to some embodiments of the invention and are not limiting of the invention.
Fig. 1 shows a schematic perspective view of foreign matter removal;
FIG. 2 shows a half cross-sectional view of the shroud;
FIG. 3 shows a partial cross-sectional view of the shroud;
Fig. 4 shows a schematic perspective view of the receiving hopper;
fig. 5 shows a schematic diagram of the connection structure of the cutter and the receiving hopper.
In the figure, 1, a dustproof unit; 11 parts of guide chute, 12 parts of shield, 121 parts of observation window, 13 parts of receiving hopper, 131 parts of guide surface, 132 parts of cambered surface, 133 parts of dividing knife, 14 parts of connecting rod, 141 parts of cutting knife, 15 parts of baffle, 151 parts of through hole, 16 parts of guide plate, 2 parts of filter unit, 3 parts of conveying belt, 4 parts of connecting pipeline.
Detailed Description
In order that those skilled in the art will better understand the present invention, the present invention will be described in further detail with reference to the detailed description and the accompanying drawings.
The terms used in the present invention are those general terms that are currently widely used in the art in view of the functions of the present invention, but may vary according to the intention, precedent, or new technology in the art of the person of ordinary skill in the art. Furthermore, specific terms may be selected by the applicant, and in this case, detailed meanings thereof will be described in the detailed description of the present invention. Accordingly, the terms used in the specification should not be construed as simple names, but are based on meanings of the terms and general description of the present invention.
Referring to fig. 1-3, the embodiment provides a foreign matter inspection and cleaning device for a coal conveying belt of a power station, which comprises a dust prevention unit 1, a filtering unit 2, a dust prevention unit 1, a dust collection hopper 13, a connecting rod 14 and a filtering unit 2, wherein the dust prevention unit comprises a guide chute 11, a protecting cover 12 arranged at an opening position above the guide chute 11, the connecting hopper 13 is arranged at a central position of the protecting cover 12, the connecting rod 14 is used for connecting the protecting cover 12 and the connecting hopper 13, the filtering unit 2 is arranged at an opening position at the top of the protecting cover 12, and negative pressure is formed in an opening area at the top of the protecting cover 12 through the filtering unit 2, so that impurities are sucked.
The guide chute 11 is of a rectangular structure, openings are formed in two ends of the guide chute 11 along the feeding direction of the conveyor belt 3, and in order to prevent coal ash from overflowing, a turnover dust-proof plate is further arranged at the opening positions of the two ends of the guide chute 11, the opening at the top of the guide chute 11 extends outwards, connecting parts are arranged around the opening and matched with the shield 12, and the guide chute 11 is fixedly connected with the shield 12 through bolts.
Preferably, the inside of the shield 12 is of a hollow structure, the top of the shield 12 is also provided with a vent, the vent can be connected with a suction fan, the suction fan sucks air at the vent position at the top of the shield 12, so that negative pressure is formed in the region, and coal ash and impurities can enter the inside of the shield 12.
Further, in order to avoid the suction fan in the course of the work, inhale inside the pipeline with buggy and impurity and cause the jam or the damage of suction fan, filter unit 2 is installed to guard shield 12 top position, and filter unit 2 mainly adopts the mode of filtering the sack to filter coal ash and impurity, ensures that the gas that gets into to the pipeline inside is clean air, avoids impurity and coal ash to cause the damage of suction fan.
It should be noted that, the receiving hopper 13 is preferably in an inverted cone shape, and the receiving hopper 13 is located in the center of the protecting cover 12, the side wall of the receiving hopper 13 can further play a certain role in guiding the coal ash and air, so that the coal ash can further move along a specific movement track, the coal ash and impurities are collected outside the filtering unit 2 along with the gas flowing process, and when the fan stops working, the surface of the plastic film adsorbs a large amount of coal ash through static electricity to form agglomerated impurities, and then falls back into the receiving hopper 13 under the action of gravity, so that the processing of staff is better facilitated.
Preferably, connecting rods 14 are connected to the periphery of the outer wall of the receiving hopper 13, the connecting rods 14 and the receiving hopper 13 are welded and fixed, one end, away from the receiving hopper 13, of the connecting rods 14 extends into the shield 12, the connecting rods 14 are connected with the shield 12 through bolts, and the receiving hopper 13 is ensured to be located in the center of the shield 12 and stably arranged.
The receiving hopper 13 is arranged below the filtering unit 2, so that filtered impurities and coal ash fall back into the receiving hopper 13 under the action of gravity, centralized and unified treatment by workers is facilitated better, and the impurities are accumulated in the receiving hopper 13 and cannot influence normal movement of the device.
In conclusion, impurities such as coal ash and plastic films can be effectively filtered through the filter unit 2, dust collection work can be guaranteed to normally run, more coal ash can be adsorbed by the plastic films in the running process of equipment, and the plastic films fall into the receiving hopper 13 under the action of gravity and are treated together with the coal ash in a centralized manner.
Referring to fig. 2, as an alternative embodiment, the filter comprises a partition 15 installed inside the shield 12, wherein the partition 15 divides the interior of the shield 12 into an upper chamber and a lower chamber, a receiving hopper 13 is positioned inside the lower chamber, a filter unit 2 is positioned inside the upper chamber, a through hole 151 is formed in the middle position of the partition 15, and the through hole 151 communicates the upper chamber with the lower chamber.
The inside of the shield 12 is provided with a partition plate 15, the partition plate 15 divides the inside of the shield 12 into an upper chamber and a lower chamber, the lower chamber is communicated with the guide chute 11, the top of the upper chamber is provided with a connecting port, the connecting port is connected with a suction fan, and the receiving hopper 13 is positioned in the lower chamber.
The through hole 151 is formed in the center of the partition plate 15, the upper cavity and the lower cavity in the shield 12 are communicated through the through hole 151, a gas flowing path passes through the through hole 151 along the side wall of the receiving hopper 13 and enters the upper cavity, and then coal ash and plastic films are filtered through the filtering unit 2, so that the purpose of collecting the coal ash and the plastic films is achieved.
Preferably, the hole site formed in the through hole 151 restricts the direction of the gas flow, so that the gas flow mixed with the coal ash and the plastic film can be concentrated through the through hole 151 and enter the upper chamber, and meanwhile, the through hole 151 can facilitate the plastic film and the coal ash to fall back into the receiving hopper 13, thereby facilitating the concentrated and unified treatment of the impurities and the plastic film.
In some embodiments, the material receiving hopper 13 is in a conical structure with a closed bottom and an open top, the opening direction of the material receiving hopper 13 faces the through hole 151, the number of the connecting rods 14 is multiple, and the multiple groups of the connecting rods 14 are distributed at equal intervals along the edge position of the opening of the material receiving hopper 13.
It should be noted that, the receiving hopper 13 has a conical structure with a bottom sealed and an open top, so that no air flow passes through the interior of the receiving hopper 13, so that impurities and soot deposited in the interior of the receiving hopper 13 are not affected by the movement of the equipment.
Further, the size of the top opening of the receiving hopper 13 is larger, so that sufficient position space is provided for the impurities and the coal ash to fall down, and the coal ash is ensured to fall into the receiving hopper 13 under the action of gravity.
Preferably, the receiving hopper 13 is of a conical structure with an opening at the top and a pointed bottom, and the receiving hopper 13 can also play a certain role in guiding the airflow containing coal ash, so that the airflow moves upwards along the side wall of the receiving hopper 13, and the flowing stability of the airflow inside is further ensured.
It should be noted that the number of the connecting rods 14 is multiple, the edge positions of the connecting rods 14 at the top opening of the receiving hopper 13 are distributed at equal intervals, the supporting of the receiving hopper 13 can be realized through the cooperation between the connecting rods 14, the dust adhesion is reduced by the smooth inner wall of the conical structure, the blocking risk of the protecting cover 12 is reduced, and the device is particularly suitable for high-humidity or viscous dust scenes.
Furthermore, the top opening of the receiving hopper 13 can be used as a pressure equalizing port to balance the pressure distribution in the pipeline and prevent the filter material from being eroded and worn by local high-speed air flow, and meanwhile, the pressure sensor can be arranged at the bottom of the inner side of the receiving hopper 13, so that a worker can conveniently know the condition inside the receiving hopper 13 in real time, and can conveniently make corresponding actions according to the numerical value provided by the pressure sensor.
Referring to fig. 3 to 5, in one embodiment provided by the present invention, the device includes a connecting rod 14, and includes a cutter 141 disposed at the bottom of the connecting rod 14, where the cutting edge of the cutter 141 faces the bottom of the receiving hopper 13.
In order to further prevent the plastic film from being wound around the outer side of the connecting rod 14, which causes inconvenience in cleaning for the staff, the plastic film is cut by mounting the cutter 141 at the bottom of the connecting rod 14, so that the volume of the plastic film can be effectively reduced.
Specifically, when the plastic film flows along the direction of approaching the filter unit 2 along with the air flow, the contact position of the middle end of the plastic film and the cutting knife 141 is blocked by the cutting knife 141, and the two ends of the plastic film are pulled by the air negative pressure to move towards the filter unit 2, so that the two ends of the plastic film are subjected to upward force, and the contact position of the plastic film and the cutting knife 141 is subjected to downward force of the cutting knife 141, so that the cutting knife 141 can cut the plastic film.
Furthermore, the periphery of the receiving hopper 13 is in a conical surface structure, and in the process that the plastic film flows upwards along with the air flow, the inclined side wall of the receiving hopper 13 does not interfere the movement track of the plastic film, so that the plastic film is concentrated at the position below the filtering unit 2 along with the air flow.
Referring to fig. 4 and 5, in one embodiment of the present invention, the receiving hopper 13 includes a guiding surface 131 disposed on a side wall, an arc surface 132 disposed at a bottom of the receiving hopper 13, and dividing blades 133 disposed on a surface of the guiding surface 131, where the dividing blades 133 are multiple groups, and the multicomponent cutters 133 are equally distributed along the guiding surface 131.
It should be noted that, the guide surface 131 is a smooth plane structure, the receiving hopper 13 may include multiple groups of guide surfaces 131, and the intersection positions of the adjacent guide surfaces 131 may form a cutting edge, so as to further crush the plastic film, and avoid the excessive plastic film from being unfolded and attached below the filtering unit 2, which causes the equipment to fail to operate normally.
Further, the plugging position at the bottom of the receiving hopper 13 is of a circular structure, so that the friction force between the plastic film and the receiving hopper 13 can be reduced, the plastic film cannot be blocked by the receiving hopper 13 in the flowing process, and the plastic film can be ensured to normally flow to the lower part of the filtering unit 2.
In order to further improve the crushing effect on the plastic film, the side wall of the guide surface 131 is provided with multi-component cutters 133, the dividing cutters 133 are located on the side wall of the guide surface 131 at equal intervals, and the plastic film is cut by the cutting edges of the dividing cutters 133 after passing through the dividing cutters 133, so that the plastic film can be fragmented, and the plastic film is further prevented from blocking the filtering unit 2.
Referring to fig. 3, in some embodiments, the side wall of the shroud 12 is provided with a viewing window 121, and the viewing window 121 is provided with a removable cover plate.
It should be noted that, in order to more intuitively facilitate the operator to observe the internal condition of the shield 12, an observation window 121 is provided at the side wall of the shield 12, a transparent cover plate is installed at the position of the observation window 121, the cover plate is rotationally connected with the shield 12, and a circle of rubber is attached to the periphery of the cover plate to achieve a sealing effect, so as to prevent the coal dust from overflowing.
Further, when a situation occurs inside the shield 12, the situation inside the shield 12 can be treated accordingly by opening the observation window 121.
Specifically, when the plastic film is adsorbed on the surface of the filter unit 2 in a large block, the plastic film attached to the surface of the filter unit 2 can be cleaned by opening the observation window 121 and using a tool, so that the equipment can be ensured to normally and stably run.
In one embodiment of the invention, the baffle plates 16 are arranged at two sides of the through hole 151, the bottoms of the baffle plates 16 extend into the through hole 151, and the baffle plates 16 are obliquely arranged and staggered with the cross section of the partition plate 15.
It should be noted that, the guide plates 16 are disposed at two sides of the through hole 151, and the guide plates 16 may form a funnel-shaped structure, so that the coal ash deposited on the surface of the guide plates 16 may fall into the receiving hopper 13 by gravity.
Specifically, a large amount of coal ash and plastic film are adhered to the surface of the filtering unit 2, the coal ash and the plastic film are adsorbed together through static electricity, when the accumulated amount is gradually increased, gravity is greater than the force of the coal ash adsorbed and gathered together, the coal ash falls down under the action of gravity, one part of the coal ash can fall onto the guide plate 16 or directly fall into the receiving hopper 13, the other part of the coal ash can fall onto the surface of the guide plate 16, and the coal ash also falls into the receiving hopper 13 under the action of gravity along with the accumulation of the coal ash, so that the uniformity of coal ash collection is ensured.
Further, the bottom of the baffle 16 extends into the through hole 151, and in the process of flowing along with the airflow in the direction close to the filter unit 2, the bottom of the baffle 16 does not affect the air entering the upper chamber, so that the plastic film is effectively prevented from being accumulated at the position of the through hole 151.
In some embodiments, the device further comprises a conveyor belt 3, a guide chute 11 is arranged above the conveyor belt 3, and a connecting pipeline 4 is connected with the top opening position of the shield 12 at one end of the connecting pipeline 4, and a suction fan is connected with the other end of the connecting pipeline.
In this embodiment, the conveyor belt 3 is used to convey the coal, and the conveyor belt 3 can convey the coal in a horizontal or inclined manner, so as to convey the coal, and in order to reduce the coal ash and plastic film in the coal, the guide chute 11 is mounted above the conveyor belt 3, two ends of the guide chute 11 are opened, and the opening is provided with a sealing plate, so that the coal ash can be effectively prevented from overflowing during the dust collection process.
It should be noted that, connecting pipe 4 is installed at the top of guard shield 12, and connecting pipe 4 is linked together with guard shield 12 open-top, is equivalent to connecting pipe 4 bottom open-top position and installs filter unit 2, and the clean gas that filters through filter unit 2 is discharged by the exhaust fan through connecting pipe 4, and impurity then piles up on filter unit 2 surface, and the staff of being convenient for later stage clear up.
Furthermore, the filter bag at the inlet of the filter unit 2 is designed to be convex so as to increase the surface area, thereby reducing the problem that the dust collection flow and speed are affected by the too large foreign matter blocking area caused by too small filter bag, and the foreign matters can fall back into the receiving hopper 13 along the guide plate 16 after the equipment stops running.
Specifically, dust-containing air enters the shield 12 from the air inlet, the flow speed suddenly decreases due to the sudden expansion of the air flow volume, the dust with larger particles is blocked on the outer wall of the filter bag under the action of the self weight, the purified air is discharged from the air outlet of the upper box body through the venturi tube of the filter bag, and the rest dust enters the middle box body filtering area along with the air flow under the guidance of the flow guiding system and is adsorbed on the outer surface of the filter bag.
When more dust particles are accumulated on the filter bag, the pulse controller sends out a signal to open the electromagnetic pulse valve, so that compressed air in the air bag is sprayed to the corresponding venturi tube by the spraying pipe, surrounding air is driven to form backflushing airflow to enter the filter bag, the filter bag is caused to expand and contract rapidly, impact vibration is caused, and further redundant dust particles accumulated on the outer wall of the filter bag are shaken off, so that a dust removing effect is achieved, and the filter bag in the filter unit 2 is cleaned.
Specifically, when the coal passes through the position of the guide chute 11, the end of the connecting pipeline 4 is connected with the suction fan, so that negative pressure is formed in the opening area at the top of the shield 12, the coal ash and the plastic film flow to the negative pressure area, the plastic film is cut into smaller fragments when passing through the cutting knife 141 and the dividing knife 133, then flows into the upper chamber, air passes through the pores of the filter bag of the filter unit 2, the coal ash and the plastic film are attached to the surface of the filter unit 2, so that the coal ash and the plastic film are effectively collected, and then the coal ash and the plastic film attached to the surface of the filter unit 2 can be cleaned in a pulse mode, and fall back into the receiving hopper 13 under the action of gravity after being separated from the surface of the filter bag, so that the concentration and unification of the coal ash and the plastic film are realized, and the next cleaning work is convenient.
In this embodiment, negative pressure is formed at the air inlet by the suction fan, the air flow containing the plastic film and the coal ash is sucked upwards and guided to the filter unit 2, clean air is discharged through the filter bag, and the coal ash and the plastic film are adsorbed on the surface of the filter bag.
Specifically, the suction fan is started to suck the air mixed with impurities into the shield 12, and the filter unit 2 filters the coal ash and the plastic film in the air, and in the air flowing process, the coal ash and the plastic film approach to the filter unit 2 along the direction of the air flow, so that the coal ash and the plastic film are adsorbed outside the filter bag.
Starting a cleaning device of the filter unit 2 to clean the coal ash and the plastic film attached to the surface of the filter bag, so that the cleaned coal ash and plastic film drop into the receiving hopper 13 under the action of gravity.
When the equipment operation is blocked, the operation of the suction fan is stopped, and then the pulse equipment is started to vibrate the filter bag, so that the coal ash and the plastic film adsorbed on the surface of the filter bag are separated from the surface of the filter bag, and are precipitated into the receiving hopper 13 under the action of gravity.
In the process of dropping the filter bag from the coal ash and plastic film, a part of the coal ash and plastic film can drop on the surface of the guide plate 16 and slide down to the inside of the receiving hopper 13 along the inclined surface of the guide plate 16, so that the coal ash and plastic film can be treated in a centralized and unified way.
When the impurity accumulation amount in the receiving hopper 13 reaches a preset threshold, the detection unit triggers an alarm signal to prompt an operator to perform cleaning operation.
Specifically, when the coal ash and the plastic film are accumulated to a certain amount in the receiving hopper 13, the pressure sensor arranged at the bottom of the inner side of the receiving hopper 13 can feed back the pressure signal to the staff, the staff can better judge the coal ash storage condition in the receiving hopper 13 by observing the pressure signal, and when the coal ash storage amount reaches a certain amount, the staff can stop the equipment operation and clean the coal ash.
Further, in this embodiment, the receiving hopper 13 includes a bottom and an upper portion, the bottom and the upper portion are connected in a hinged manner, when the impurities in the receiving hopper 13 are accumulated to a certain amount, a worker can enter the inside of the protecting cover 12 through the observation window 121 and operate the bottom of the receiving hopper 13 to open, and then the impurities accumulated in the receiving hopper 13 can be cleaned.
The operator responds to the alarm signal and opens the discharge opening at the bottom of the receiving hopper 13 to finish the centralized cleaning of impurities.
Specifically, when the alarm sends out an alarm, the worker stops the equipment, then places a receiving tray at the bottom of the receiving hopper 13, then opens the bottom of the receiving hopper 13, and uniformly processes the coal ash stored in the receiving hopper 13.
Finally, it should be pointed out that the above detailed description of the method and the device is only an example, which can be modified in different ways by a person skilled in the art without departing from the scope of the invention.
Claims (8)
1. The utility model relates to a foreign matter inspection and cleaning device for a coal conveying belt of a power station, which is characterized by comprising,
The dustproof unit (1) comprises a guide chute (11), a shield (12) arranged at an opening position above the guide chute (11), a receiving hopper (13) arranged at the center of the shield (12), and a connecting rod (14) for connecting the shield (12) with the receiving hopper (13);
The filter unit (2) comprises a filter bag and a pulse controller for cleaning pulverized coal on the surface of the filter bag, wherein the filter unit (2) is arranged at the top opening position of the shield (12), and the top opening area of the shield (12) forms negative pressure through the filter unit (2), so that the suction of impurities is realized;
The filtering unit (2) corresponds to the receiving hopper (13), the receiving hopper (13) is used for storing coal ash and impurities, and a pressure sensor is arranged in the receiving hopper (13);
The connecting rod (14) comprises a cutting knife (141) arranged at the bottom of the connecting rod (14), and the cutting knife (141) can crush the plastic film.
2. The power station coal conveyor belt foreign matter inspection cleaning device of claim 1, wherein:
A partition board (15) is arranged in the shield (12), and the partition board (15) divides the interior of the shield (12) into an upper chamber and a lower chamber;
the receiving hopper (13) is positioned in the lower chamber, and the filtering unit (2) is positioned in the upper chamber;
a through hole (151) is formed in the middle of the partition plate (15), and the upper cavity and the lower cavity are communicated through the through hole (151).
3. The power station coal conveyor belt foreign matter inspection cleaning device of claim 2, wherein:
The receiving hopper (13) is of a conical structure with a closed bottom and an open top, and the opening direction of the receiving hopper (13) is opposite to the through hole (151);
The number of the connecting rods (14) is multiple, and the connecting rods (14) are distributed at equal intervals along the edge of the opening of the receiving hopper (13).
4. A power station coal conveyor belt foreign matter inspection cleaning device according to claim 3, characterized in that:
the cutting edge of the cutting knife (141) faces to the bottom of the receiving hopper (13).
5. A power station coal conveyor belt foreign matter inspection cleaning device according to claim 3, characterized in that:
the receiving hopper (13) comprises a guide surface (131) arranged on the side wall of the receiving hopper (13), an arc surface (132) arranged at the bottom of the receiving hopper (13), and a dividing knife (133) arranged on the surface of the guide surface (131);
The number of the dividing knives (133) is multiple, and the dividing knives (133) are distributed along the diversion surface (131) at equal intervals.
6. The power station coal conveyor belt foreign matter inspection cleaning device of claim 5, wherein:
an observation window (121) is formed in the side wall of the shield (12), and a movable cover plate is arranged on the observation window (121).
7. The power station coal conveyor belt foreign matter inspection cleaning device of claim 2, wherein:
guide plates (16) are arranged on two sides of the through hole (151), and the bottoms of the guide plates (16) extend into the through hole (151);
the guide plates (16) are obliquely arranged and are staggered with the cross sections of the partition plates (15).
8. The foreign matter inspection and cleaning device for a power station coal conveying belt according to claim 3, further comprising,
The conveying belt (3), the guide chute (11) is arranged above the conveying belt (3);
and one end of the connecting pipeline (4) is communicated with the opening position of the top of the shield (12), and the other end of the connecting pipeline is connected with a suction fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510409181.1A CN119898644B (en) | 2025-04-02 | 2025-04-02 | A foreign body inspection and cleaning device for coal conveyor belts in power plants |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510409181.1A CN119898644B (en) | 2025-04-02 | 2025-04-02 | A foreign body inspection and cleaning device for coal conveyor belts in power plants |
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| CN119898644A true CN119898644A (en) | 2025-04-29 |
| CN119898644B CN119898644B (en) | 2025-08-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2939038A1 (en) * | 2014-03-03 | 2015-09-11 | Filtrar Tech Inc. | Vacuum system and method of vacuuming using same |
| CN218057179U (en) * | 2022-03-24 | 2022-12-16 | 青岛亿拓机械设备有限公司 | A fully automatic feeder with dust removal function |
| CN221252801U (en) * | 2023-09-27 | 2024-07-02 | 菲迩德环保科技(重庆)有限公司 | Recovery device for multi-sundry pulverized coal dust plastic-burned plate |
-
2025
- 2025-04-02 CN CN202510409181.1A patent/CN119898644B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2939038A1 (en) * | 2014-03-03 | 2015-09-11 | Filtrar Tech Inc. | Vacuum system and method of vacuuming using same |
| CN218057179U (en) * | 2022-03-24 | 2022-12-16 | 青岛亿拓机械设备有限公司 | A fully automatic feeder with dust removal function |
| CN221252801U (en) * | 2023-09-27 | 2024-07-02 | 菲迩德环保科技(重庆)有限公司 | Recovery device for multi-sundry pulverized coal dust plastic-burned plate |
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| CN119898644B (en) | 2025-08-05 |
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