CN112407843B - Angle modulation vibration coal feeder for detecting water coal channeling bin - Google Patents
Angle modulation vibration coal feeder for detecting water coal channeling bin Download PDFInfo
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- CN112407843B CN112407843B CN202011286987.XA CN202011286987A CN112407843B CN 112407843 B CN112407843 B CN 112407843B CN 202011286987 A CN202011286987 A CN 202011286987A CN 112407843 B CN112407843 B CN 112407843B
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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
- 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
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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
- B65G27/00—Jigging conveyors
- B65G27/08—Supports or mountings for load-carriers, e.g. framework, bases, spring arrangements
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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
- B65G27/00—Jigging conveyors
- B65G27/10—Applications of devices for generating or transmitting jigging movements
- B65G27/32—Applications of devices for generating or transmitting jigging movements with means for controlling direction, frequency or amplitude of vibration or shaking movement
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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
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
- B65G47/18—Arrangements or applications of hoppers or chutes
- B65G47/19—Arrangements or applications of hoppers or chutes having means for controlling material flow, e.g. to prevent overloading
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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
- 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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- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention relates to an angle modulation vibration coal feeder for detecting a water coal channeling bin, and belongs to the technical field of material conveying equipment. The water coal detection baffle plate is hinged on a support frame, two ends of an opening and closing driving device are respectively hinged with the support frame and the water coal detection baffle plate, one side of the water coal detection baffle plate, which faces to the discharging end of a vibration tank body, is an arc with the center of the hinge as the center of a circle, the radius of an arc surface is the sum of the arc radius of the discharging end surface of the vibration tank body and the reserved gap value between the water coal detection baffle plate and the discharging end of the vibration tank body, the hinge point is positioned on the extension line of the arc, the lower part of the water coal detection baffle plate is connected with a water container with an open upper part and a closed lower part, and a force measuring device for measuring the water volume of the water container and the stress state on the water coal detection baffle plate is arranged on the water coal detection baffle plate or a connecting part of the water coal detection baffle plate. The invention effectively detects and solves the problem of coal scurry in the coal bunker, and has important practical value for ensuring the safe production of coal.
Description
Technical Field
The invention relates to an angle modulation vibration coal feeder for detecting a water coal channeling bin, and belongs to the technical field of material conveying equipment.
Background
At present, the coal industry basically realizes the automation and mechanization of coal production, and in the process of coal production, in order to prevent the shutdown of the whole production system caused by the damage of individual equipment and seriously affect the production efficiency, a large number of large-scale and ultra-large-scale coal bunkers are arranged in the links of coal mining and transportation production for temporarily storing coal. In addition, the coal mining process is mainly carried out underground, a large amount of underground water is inevitably generated, meanwhile, due to the characteristics of coal, a large amount of water is also required to participate in the production process so as to meet the requirements of environmental protection and the conditions of the production process, and part of the water inevitably flows into the coal bunker in the production process and is mixed with the coal in the coal bunker. Generally, coal in a coal bunker firstly absorbs water entering the coal bunker, so that the water content of the coal bunker is improved, when the water amount flowing into the coal bunker is within a certain range, such as less than 10%, the mobility of the coal cannot be greatly influenced, but when the water amount flowing into the coal bunker is too much, the water content of the coal reaches a supersaturated state, a water coal phenomenon is generated, and because the water coal has good mobility, the water coal in the coal bunker can generate a bunker-crossing phenomenon, namely, the water coal is blown out from a coal bunker opening at a high speed. There are generally two situations of water coal channeling: the first condition is that the coal that produces when the coal bunker mouth closes scurries the storehouse, when coal production stopped, coal bunker lower part coal outlet was generally in the closed condition, therefore coal was kept in the coal bunker temporarily, the water that enters into the coal bunker this moment permeates to the coal bunker lower part along coal gradually, because the coal granule is tiny, the gap between the fine powder granule is also less like this, the degree of difficulty that moisture permeates downwards from these gaps is also great, especially at coal bunker coal outlet position, fine coal content is the highest, the degree of difficulty of water infiltration is also the biggest, consequently only will have partial moisture to flow out through the coal bunker mouth at last, most is detained in the coal bunker, make the water yield in the coal bunker increase, the water coal degree increases. When the coal bunker opening is opened to enable the coal feeding equipment arranged at the lower part of the coal bunker opening to start to convey coal outwards from the coal bunker, water coal in the coal bunker is blown out from the coal bunker along the coal bunker outlet under the action of high bunker pressure in the coal bunker. In another situation, water coal enters the coal bunker to generate water coal scurry in the normal coal feeding operation process. After the water coal is blown into the bunker, the water coal mixture gushes out of the bunker in a very short time, the feeding equipment under the bunker cannot convey the water coal out in time, and the water coal can be filled in the space at the lower part of the bunker. In a closed or semi-closed environment, for example, coal is excavated in an underground roadway, water and coal gushed from a channeling bin cannot be dispersed in time, and after the water and coal are accumulated, operating equipment and operating space under the coal bin can be buried, so that great potential safety hazards exist. The coal industry at home and abroad has many accidents of personal casualties and equipment damage caused by flooding coal roadways with water and coal, so that the problem is very important at home and abroad. At present, the problem of water coal in a coal bunker is detected and solved by mainly adopting a manual observation method to judge whether the water coal occurs or not, and the problem of the water coal is solved by installing a mechanical gate at a coal outlet of the coal bunker and manually closing the mechanical gate in time under the condition that the water coal is found. However, with the improvement of the automation degree of the existing coal production, field operators are gradually reduced, the tasks of single operators are increased, manual reaction is slow in actual operation, and manual work is easy to neglect or paralyze, so that operators can not find water coal and coal channeling frequently in time when water coal and coal channeling occur, thereby causing serious consequences of water coal channeling, particularly, in the present day that the safety production is increasingly emphasized, personal casualties and equipment damage accidents caused by water coal channeling still occur occasionally, and become one of the major potential safety hazards in the production of the coal industry, and therefore, a new effective technical scheme is urgently needed to be adopted to solve the problem of water coal channeling which generally exists in the coal production industry.
Disclosure of Invention
The invention aims to provide an angle modulation vibration coal feeder for detecting a water coal scurry bin, which can effectively solve the safety problem caused by the fact that the water coal scurry bin cannot be found and solved in time in the coal production process by means of manual observation.
The purpose of the invention is realized as follows: an angle-adjusting vibration coal feeder for detecting a water coal scurry bin comprises a flat gate, a vibration coal feeder, a water coal detection baffle, a support frame and a force measuring device, wherein the flat gate is arranged at a coal outlet of the coal bin, the vibration coal feeder is arranged at the lower part of the flat gate, a feeding end of a vibration tank body of the vibration coal feeder is hinged on a spring support, a discharging end is connected with a rotary driving oil cylinder, the end surface of a discharging end of the vibration tank body is in an arc shape with the center of the hinge as the center of a circle, the water coal detection baffle is hinged on the support frame in front of the discharging end of the vibration coal feeder, the middle part of the water coal detection baffle is connected with an opening and closing driving device, the other end of the opening and closing driving device is connected on the support frame, one side of the water coal detection baffle facing the discharging end of the vibration tank body is in an arc with the center of the hinge as the center of the circle, and a hinge point is positioned on an extension line of the arc, when the water coal detection baffle is in a closed position, a gap of 0.1-20 mm is reserved between the water coal detection baffle and a discharge end arc surface of the vibration tank body, the radius of the water coal detection baffle arc surface is the sum of the arc radius of the discharge end surface of the vibration tank body and the reserved gap value between the water coal detection baffle and the discharge end of the vibration tank body, the lower part of the water coal detection baffle is connected with a water container of which the upper part is open and the lower part is of a closed structure, and the water coal detection baffle or a connecting part thereof is provided with a water container water volume measuring device for measuring the water volume of the water container and measuring the stress state on the water coal detection baffle.
The width of the water container is larger than that of the coal outlet of the vibration coal feeder, and the force measuring device is installed inside the water container.
The force measuring device is a water pressure sensor which is arranged at the bottom of the water container.
The force measuring device is a force measuring sensor, the force measuring sensor is arranged at the position of a hinge hole on the support frame, and a force measuring surface of the force measuring sensor is tightly propped against the outer surface of the hinge shaft.
The start-stop driving device is a start-stop driving oil cylinder, one end of the start-stop driving oil cylinder is hinged to the water coal detection baffle, the other end of the start-stop driving oil cylinder is hinged to the supporting frame, a stroke control device is arranged on the start-stop driving oil cylinder, and the force measuring device is installed on the cylinder barrel.
The force measuring device is a force measuring sensor, the force measuring sensor is arranged at the position of a hinge hole on the support frame or the water coal detection baffle, and the force measuring surface of the force measuring sensor is tightly propped against the outer surface of the hinge shaft.
The force measuring device is an oil-resistant pressure sensor, the oil-resistant pressure sensor is installed on a cylinder barrel of the opening and closing driving oil cylinder, and a force measuring surface of the oil-resistant pressure sensor is connected with oil in the cylinder barrel of the opening and closing driving oil cylinder.
And a transition sleeve is arranged between the hinge hole and the hinge shaft or between the hinge hole and the hinge shaft, and the force measuring surface of the force measuring sensor is tightly propped against the outer surface of the transition sleeve.
The number of the force measuring sensors is not less than 2, and the force measuring sensors are distributed along the periphery of the hinge hole or the hinge hole.
The force measuring device is a pressure sensor, the pressure sensor is installed on the arc surface of the water coal detection baffle, and at least two rows of the pressure sensor are arranged in the width direction and the height direction of the arc surface of the water coal detection baffle.
The flat gate is installed on the lower portion of the coal bunker, the coal outlet of the coal bunker can be opened and closed according to requirements, the vibration groove body of the vibration coal feeder belongs to a closed structure, feeding without leakage in the feeding process can be achieved, meanwhile, the vibration coal feeder has the advantages of being simple in structure, convenient to use and the like, and therefore the vibration coal feeder is installed on the lower portion of the flat gate, and coal is fed through the vibration coal feeder. The feeding end of a vibration groove body of the vibration coal feeder is hinged on the spring support, and the discharging end of the vibration groove body of the vibration coal feeder is connected with the rotary driving oil cylinder, so that the inclination angle of the feeding machine groove body can be adjusted through the rotary driving oil cylinder, the coal feeding amount of the coal feeder is adjusted, the adjustment of the coal feeding amount of the coal feeder is convenient and simple, and the adjustment range is large.
One side of the water coal detection baffle facing the discharge end of the vibration tank body and the end part of the discharge end of the vibration tank body are both in an arc shape taking a hinged center as a circle center, wherein the radius of the arc surface of the water coal detection baffle is the sum of the arc radius of the discharge end face of the vibration tank body and a reserved gap value between the water coal detection baffle and the discharge end of the vibration tank body, the water coal detection baffle is hinged on a support frame at the front part of the discharge end of the vibration coal feeder, a hinged point is positioned on an extension line of an arc of the water coal detection baffle, the water coal detection baffle can be always matched with the discharge end face of the vibration tank body when the water coal detection baffle is in a closed state, and the gap between the water coal detection baffle and the end face of the vibration tank body is ensured. The two ends of the opening and closing driving device are respectively connected to the water coal detection baffle and the supporting frame, and the water coal detection baffle is opened and closed through the opening and closing driving device, so that the normal work of the water coal detection baffle is guaranteed.
When the flat gate is in a closed state, if water coal is generated in the coal bunker, part of saturated water can be mixed into coal water mixture containing a small amount of fine powder, gradually permeates downwards through the coal bed, finally permeates into the coal bunker opening, permeates out through a gap between the gate plate of the flat gate and the wall of the coal bunker opening, flows into the vibrating trough body at the lower part, and flows into the discharge end along the bottom plate of the trough body. Because there is 0.1~20 mm's clearance between vibration cell body discharge end terminal surface and the water coal detection baffle, be connected with the water container that upper portion is for opening, the lower part is enclosed construction in water coal detection baffle sub-unit, install the water pressure sensor who measures water container water storage capacity on water coal detection baffle or its adapting unit, consequently the coal water that oozes out from the coal bunker can enter into this water container to measure the water yield change by water pressure sensor. Therefore, whether the water coal exists in the coal bunker can be judged according to the measured weight change of the water coal in the water container. When the coal water amount in the water container reaches a certain value and the coal water amount in the coal bunker is judged, the electric control system can be used for alarming in sound and light mode and the like to remind relevant operators of solving the problem of coal water channeling. At this moment, if the coal feeding operation is to be carried out, firstly, a small gap, for example, a gap of 20-50 mm is opened for the flashboard of the flat gate, at this moment, the water coal can flow downwards along the gap and enter the vibration tank body, at this moment, the water coal detection baffle at the end part of the vibration tank body is also in a closed state, the water coal entering the vibration tank body stays in the tank body, if the flow speed of the water coal is observed to be proper, the water coal detection baffle is opened, and the water coal enters corresponding conveying equipment through the vibration tank body and is transported to a destination. If the flow speed of the water coal is too high, the opening amount of the flashboard of the flat gate is reduced, and if the flow speed of the water coal is too low, the opening amount of the flashboard is increased, so that the water coal in the coal bunker is orderly fed out from the coal bunker until all the water coal is discharged. Therefore, whether water coal occurs in the coal bunker can be effectively detected only by arranging the water container and the water pressure sensor for detecting the water storage capacity on the detection baffle, the problem that the water coal in the coal bunker is scurried can be effectively detected and solved by controlling the opening amount of the flat gate flashboard, the coal bunker water coal detection device has the advantages of being simple and practical in structure, reliable in detection result, good in using effect and the like, and the problem that the existing coal bunker water coal scurring bin can only be judged through manual discovery can be perfectly solved.
When the coal is fed by the vibration coal feeder, the flat gate is opened, the water coal detection baffle at the end part of the vibration groove body is opened, and when the coal is normally fed, the fluidity of the coal is low, so that the feeding speed from the end part of the vibration groove body is low, and the forward movement distance of the coal when the coal falls to the conveying equipment is small. The opening degree of the water coal detection baffle is adjusted and set by adjusting the movement stroke of the piston rod for opening and closing the driving oil cylinder, so that the coal given in normal coal feeding can not touch the water coal detection baffle, and normal coal feeding operation can be continuously carried out at the moment. If water coal appears in the coal bunker in the coal feeding process of the vibration coal feeder, the water coal amount flowing out of the coal bunker in a short time is greatly increased, the speed is greatly improved, and the phenomenon of coal channeling occurs, thus, the water coal fed from the feeding end of the vibration groove body flows forwards in a fleeing state, the forward stroke distance is greatly increased, according to the relevant test data and experience, the opening position of the water coal detection baffle is adjusted and determined in advance, so that the water coal rushing forwards can impact the arc-shaped surface on the water coal detection baffle and the water container, because the water pressure sensor for measuring the water volume of the water container and the force measuring device for measuring the force applied on the arc-shaped plate surface of the water coal detection baffle are arranged on the water coal detection baffle or the connecting part thereof, the water pressure sensor and the measuring device can detect the impact force, and judging the state of the water coal according to the measured impact force of the water coal, and determining whether the water coal channeling phenomenon occurs. If the water coal scurries the storehouse by the judgement of measuring result, then at first carry out audible and visual warning by electrical control system, remind relevant personnel to take place the water coal and scurries the storehouse problem, close through electrical control system automatic start flat gate simultaneously, close the coal bunker mouth, after the coal bunker mouth is closed, the water coal in the coal bunker can only ooze through the tiny gap between flat gate flashboard and the coal bunker mouth bulkhead, has prevented the continuous emergence of water coal scurries the storehouse phenomenon. After related personnel are reminded by the alarm system and find that the water coal scurry bin problem occurs, the water coal existing in the coal bin can be orderly and safely released by adopting the method, so that the water coal scurry bin problem is thoroughly solved. The water coal detection baffle with the sensor and the force measuring device and the adjustable position can effectively find the problem of water coal channeling in the coal feeding process of the coal feeder, and has the advantages of simple detection structure, flexible and reliable use and good practical effect.
The water coal detection baffle and the support frame are designed to be in a hinged structure, the structure is simple and reliable, the operation is flexible, the force measuring device uses the force measuring sensor, and the water coal detection baffle has the advantages of wide source, low price and reliability in use. The force sensors are arranged at the positions of the hinged holes in the support frame at the connecting part of the water coal detection baffle and the support frame, the stress surfaces of the force sensors are tightly propped against the surface of the hinged shaft, the number of the force sensors is not less than 2, and the force sensors are distributed along the circumferential direction of the hinged holes, so that the sensor connecting line is prevented from being torn back and forth due to frequent and large-scale position change of the force sensors in the using process, the related structure is simplified, and the safety is improved. More than two force sensors are used at one hinged hole position, so that a supporting structure is guaranteed, and meanwhile, when a single sensor is damaged, a detection result can be corrected through comparison of measurement data, and the reliability of the measurement result is guaranteed.
The upper part of the water container is of an open structure, the lower part of the water container is of a closed structure, so that coal-water mixture flowing out of a gap between the water-coal detection baffle and the discharge end of the vibration groove body can be guaranteed to smoothly enter the water container and be accumulated in the water container, the water storage capacity in the water container is changed, and the water-coal state in the coal bunker can be guaranteed to be accurately reflected through detection of the water quantity change value and speed of the water container. The width of the water container is larger than that of the coal outlet of the coal feeder, so that the water seeped from the trough body of the coal feeder can be ensured to completely enter the water container, the seepage quantity and speed of the water in the coal bunker can be more comprehensively and accurately reflected, and the method has important significance for accurately judging whether water coal occurs in the coal bunker. When the water volume in the water container increases, the water level height in the water container increases, namely the hydrostatic head pressure at the bottom of the water container is increased, so that the change of the water storage volume can be measured more sensitively by installing the water pressure sensor at the bottom of the water container, and the advantage is obvious.
When the water coal scurries the storehouse, the water coal that is rolled over by the vibration cell body discharge end will directly strike on the arcwall face of water coal detection baffle, for this reason two rows of pressure sensor are arranged respectively in water coal detection baffle circular arc face width and direction of height at least, like this, when the water coal scurries the storehouse, the force cell sensor of water coal direct action installation on the circular arc face, send alarm signal by pressure sensor, remind the water coal to scurries the emergence of storehouse accident, and close the flat gate simultaneously, prevent the expansion of water coal scurries the storehouse accident and finally cause the incident. The pressure sensor is arranged on the arc-shaped surface, so that the measuring result is direct and reliable. The plurality of pressure sensors are arranged in the height direction and the width direction, so that the reliability and the comprehensiveness of the test can be improved.
The rotary motion of the water coal detection baffle is driven by opening and closing the driving oil cylinder, and two ends of the water coal detection baffle are connected with the supporting frame through the hinged structure. Set up stroke controlling means on opening and close the actuating cylinder, can convenient and fast ground adjustment open and close the stroke of actuating cylinder, thereby the adjustment with confirm the distance between water coal detection baffle and the vibration cell body discharge end, guarantee the clearance between water coal detection baffle and the vibration cell body discharge end when stopping the coal feeding, the coal that gives during normal coal feeding touches not the arcwall face and the water container that water coal detected the baffle, the water coal of high-speed injection form can be strikeed on the water coal detection board when the storehouse is scurried to the water coal appears, the water coal scurries the storehouse problem when finally can detect the coal bunker in the coal bunker reliably and the coal feeding appears.
Open and close drive cylinder one end and articulate on the water coal detects the baffle, one end articulates on the support frame, hinge hole position installation force cell sensor on support frame or water coal detects the baffle, and force cell sensor's quantity is no less than two, and arrange along the circumference of hinge hole, because the impact force of the horizontal direction that the water coal detects the baffle and mostly is born by opening and close drive cylinder, install the size that can detect out this impact force at the force cell sensor who articulates the hole position like this, thus, through installing force cell sensor at hinge hole position, can detect the problem whether take place the water coal scurries the storehouse through electrical control system, and the device is simple in structure, and the device is convenient to set up. The arrangement of a plurality of force sensors at one position can compare and analyze the detection data of a single force sensor to judge whether the related detection element is damaged or not, ensure the truth and reliability of the test data and solve the problem that the system can not work normally after the single force sensor is damaged.
As mentioned above, when the water coal scurries the storehouse, the water coal detection baffle is stressed by the opening and closing driving oil cylinder through the piston rod, the piston and the cylinder barrel, the oil-resistant pressure sensor is adopted and installed on the cylinder barrel of the opening and closing driving oil cylinder, the force measuring surface of the oil-resistant pressure sensor is connected with oil in the cylinder barrel of the opening and closing driving oil cylinder, and the water coal impact force applied to the water coal detection baffle can be accurately measured, so that whether the water coal scurries the storehouse or not can be accurately judged.
Because the force cell sensor is installed in the hinged position and the hinged position, the force cell sensor slides along the surface of the force cell sensor when the hinged and hinged shafts rotate, the measuring performance of the force cell sensor is influenced, and meanwhile, the force cell sensor is damaged.
Drawings
Fig. 1, 2, 3, 4, 5, 6 and 7 are schematic structural diagrams illustrating an embodiment of the present invention, wherein fig. 1 is a front view illustrating the schematic structural diagram of the present invention, fig. 2 is a sectional view taken from a position a to a in fig. 1, fig. 3 is a sectional view taken from a position D to D in fig. 2, fig. 4 is a view taken along a direction a in fig. 1, fig. 5 is a sectional view taken from a position C to C in fig. 4, fig. 6 is a sectional view taken from a position B to B in fig. 1, and fig. 7 is a sectional view taken from a position E to E in fig. 6.
Detailed Description
In the structure diagrams of the embodiments shown in fig. 1 to 7, the meaning of the respective part numbers is as follows: 1. a support frame; 2. a spring support; 3. a vibration motor; 4. vibrating the trough body; 5. a vibration isolation spring; 6. a hinged support; 7. a hinge fulcrum shaft; 8. a material guide chute; 9. a flat plate gate; 10. a coal bunker; 11. a pulley; 12. a wire rope; 13. hanging a spring; 14. the tank body rotates to drive the oil cylinder; 15. a water coal detection baffle; 16. opening and closing the driving oil cylinder; 17. a water container; 18. a belt conveyor; 19. a force sensor; 20. a hinge shaft; 21. positioning pins; 22. a piston; 23. a piston rod; 24. a cylinder barrel; 25. an oil resistant pressure sensor; 26. a seal ring; 27. a pressure sensor; 28. a connecting bolt; 29. a rubber elastic pad; 30. hinging a shaft; 31. a bolt; 33. a water pressure sensor; 34. a pin shaft; 35. a bayonet lock; 36. a transition sleeve; 37. and a pin.
In this embodiment, the vibration trough body 4 is hinged on the hinged support 6 through the hinged support shaft 7, the hinged support is installed on the vibration isolation spring 5, the vibration isolation spring is installed on the spring support 2, the spring support is installed on the support frame 1, the vibration motor 3 is installed on the lower part of the vibration trough body, and the vibration trough body can vibrate by starting and stopping the vibration motor, so that coal in the trough body is given out. The front end of the vibration groove body is connected with a rotary driving oil cylinder 14 arranged on the supporting frame through a hanging spring 13 and a steel wire rope 12, and the steel wire rope is wound on the pulley 11 to change the direction. The vibration trough body can be driven to rotate along the hinged fulcrum shaft by the telescopic of the rotary driving oil cylinder piston rod 23, and the feeding angle of the vibration trough body is changed, so that the coal feeding amount of the vibration coal feeder is adjusted. The coal outlet of the coal bunker 10 is provided with a flat gate 9, and a gate plate of the flat gate is driven to open and close by a hydraulic oil cylinder, so that the coal outlet of the coal bunker is opened and closed. A material guide groove 8 is arranged between the flat gate and the vibration groove body, and the coal flowing out of the coal outlet of the coal bunker is guided into the vibration groove body through the material guide groove. The end face of the discharge end of the vibration groove body is an arc surface taking the axis of the hinge fulcrum as a radius, the upper end of the water coal detection baffle 15 is hinged on the hinge shaft 30 at the front part of the discharge end of the vibration groove body, and the bolts 31 are installed at the two ends of the hinge shaft to prevent the hinge shaft from moving left and right. The external part of the hinged shaft is sleeved with a transition sleeve 36, the transition sleeve is positioned on the support frame by a pin 37, the lower part of the hinged hole is provided with a force measuring sensor 19, two force measuring sensors are arranged at each hinged hole along the circumferential direction, and the outer surfaces of the two force measuring sensors are tightly propped against the outer surface of the transition sleeve. The force measuring sensor is arranged at the position, the position of the sensor is fixed, the electric appliance connecting line is easy to arrange, and the safe operation of the system is easy to ensure.
Two ends of the opening and closing driving oil cylinder 16 are hinged with the water coal detection baffle and the support frame through a piston rod 23 and a cylinder barrel 24 respectively. The piston rod is connected with the piston 22, and the hinge shaft 20 is provided with a positioning pin 21 to prevent the hinge shaft from being separated. The oil-resistant pressure sensor 25 is arranged on the cylinder barrel and is sealed by a sealing ring 26, and the force measuring surface of the oil-resistant pressure sensor is directly connected with hydraulic oil in the oil cylinder. A load cell 19 is installed in the hinge hole at the same position as the hinge hole. One surface of the water coal detection baffle facing the discharge end of the vibration tank body is an arc surface with a hinge center as a circle center, the axis of the hinge shaft 20 is located on an extension line of the arc, when the water coal detection baffle is closed under the action of opening and closing the driving oil cylinder, a gap of 1mm is arranged between the arc end surface of the discharge end of the vibration tank body and the arc surface of the water coal detection baffle, and thus, the radius of the arc surface of the water coal detection baffle is the sum of the arc radius of the discharge end of the vibration tank body and the arc radius of 1 mm. Install 3 rows on the arc surface of water coal detection baffle lower part, 9 pressure sensor 27 of each three total of every row, every pressure sensor all installs in the surface of circular arc, the stress surface slightly protrudes the arc surface, install rubber elastic pad 29 on the arc surface, rubber elastic pad adopts connecting bolt 28 to fix on the arc surface of water coal detection baffle, this kind of structure can guarantee to be used in the water coal impact force of arc surface and transmit pressure sensor effectively, protect pressure sensor not damaged simultaneously. The water container 17 is connected to the lower part of the water coal detection baffle through a pin shaft 34 and a bayonet 35, the water container is of a structure with an open upper part and a closed lower part, a water pressure sensor 33 is installed at the closed bottom of the water container, and the width of the water container is larger than that of the vibration groove body.
When the coal bunker opening is closed and the whole system is in a coal feeding stopping state, the flat gate at the lower part of the coal bunker opening is closed, the water coal detection baffle at the front part of the discharge end of the vibration groove body is driven to be closed by the opening and closing driving oil cylinder, and a gap of 1mm is reserved between the end surface of the discharge end of the vibration groove body and the arc surface of the water coal detection baffle. If water enters the coal bunker and is mixed with the coal in the coal bunker to form water coal in a coal supply stopping state, the coal in the coal bunker is in a water supersaturated state, the supersaturated water gradually permeates downwards along the coal bed, seeps out of the coal bunker through a gap between the coal bunker opening bin wall and a flat gate flashboard, flows into the vibration trough body through the guide chute, flows into the water container connected to the lower part of the water coal detection baffle through a gap between the vibration trough body and the water coal detection baffle, the water level in the water container is increased, the weight of the whole water coal detection baffle is increased, the water coal detection baffle is basically in a suspended state, the whole weight is mainly borne by the hinge shaft, and therefore, the water pressure sensor arranged on the bottom plate of the water container and the force measuring sensor arranged at the position of the hinge hole can detect the change of the water amount in the water container. And setting relevant control parameters of an electric appliance control system, and when the water storage amount in the water container reaches a certain amount, such as 5 kilograms, sending an audible and visual alarm signal by the electric control system to remind related personnel of water and coal generation in the coal bunker and the need of crisis treatment.
After water coal appears in the coal bunker when the coal bunker opening is closed, the water coal problem is generally processed by manual operation so as to prevent the occurrence of the coal bunker channeling problem. In order to ensure safety, monitoring video and remote control operation equipment are generally installed on an operation site, and the following operations are carried out to prevent safety accidents caused by water coal channeling. The gate plate of the flat gate is firstly opened for a very small distance, for example, the opening amount of 20mm, and due to the very high mobility of the water coal, the water coal begins to flow out gradually along the gap, and in the process of flowing out of the water coal, the size of the gap amount can be adjusted in real time according to the size of the flowing speed, so that the water coal is prevented from being gushed out in large quantity to cause channeling, and meanwhile, the situation that the water coal with too small gap cannot flow out smoothly is avoided. After the gap of the flat gate flashboard is adjusted in place, the start-stop driving oil cylinder is started to open the water coal detection baffle, the water coal detection baffle rotates around the hinged shaft at the upper part, the hinged shaft rotates in the transitional sleeve under the action of the transitional sleeve, the hinged shaft is prevented from damaging the stress surface of the force transducer, meanwhile, the smooth proceeding of the rotation is not influenced, and after the water coal detection baffle is opened, the water coal in the coal bunker can be gradually and orderly discharged and is conveyed to a specified position by the belt conveyor 18. Therefore, the water container is connected to the lower part of the water coal detection baffle, and the water pressure sensor and the force sensor are arranged on the system, so that whether the water coal problem occurs in the coal bunker can be reliably detected. When water coal occurs, the system can give an alarm in time and prompt people to process. When the manual work is handled, through the size of the gap of opening of adjustment flat gate flashboard, can adjust the speed that the control water coal slipped out from the coal bunker effectively, consequently avoided when the coal bunker appears in the coal bunker, because not discover in time, the emergence that the storehouse was scurried to the water coal that the operating personnel still opened the flat gate completely according to normal operation and caused.
And if no water coal is detected to be generated in the coal bunker, normal coal feeding is carried out. The stroke of the opening and closing driving oil cylinder is adjusted in advance, so that after the water and coal detection baffle is opened, coal which normally flows out of the vibration groove body cannot touch the arc surface of the water and coal detection baffle and a water container connected with the lower part of the water and coal detection baffle. When the coal is normally fed, the water coal detection baffle is opened, the vibration motor is started to enable the vibration groove body to vibrate, the flat gate is opened, then the coal in the coal bunker flows out from the coal bunker opening, enters the vibration groove body through the guide chute, is fed out of the feeding end of the vibration groove body under the action of the vibration force of the vibration groove body, enters the belt conveyor arranged at the lower part, and is conveyed to a set position through the belt conveyor. In the coal feeding process, the stroke of the rotary driving oil cylinder can be adjusted according to the requirement of the feeding amount, the vibration groove body is pulled to rotate through the steel wire rope and the pulley, the inclination angle of the vibration groove body is adjusted, and therefore the adjustment of the vibration feeding amount is achieved. After the angle of the vibration tank body is adjusted, the axis of the hinged shaft of the water coal detection baffle is positioned on the extension line of the arc surface, so that the value of the preset gap between the water coal detection baffle and the discharge end face of the vibration tank body is not influenced, and the normal work of the system can be ensured.
In the normal coal feeding process, if the water coal problem appears suddenly in the coal bunker, because the mobility of water coal is very good, the storehouse phenomenon appears scurrying in the water coal, namely the water coal scurrys from the coal bunker mouth at a high speed, enter into the vibration cell body, because the vibration cell body has certain decurrent inclination, therefore the water coal that scurrys continues to flow at a high speed in the cell body, still keep advancing at the discharge end position, like this, compare with the coal that normally gives from the vibration cell body discharge end, its dash-ahead distance greatly increased, thereby can strike the water coal that coal touching can not reach when normally feeding and detect the baffle, produce the impact force signal on water coal detects the baffle. As the forward-flushing distance is increased, part of the water and coal enters the open water container (shown as a position shown by a dotted line in figure 1), and a pressure signal is generated on a water pressure sensor arranged at the bottom of the water and coal container; part of the water coal impacts the arc surface of the water coal detection baffle plate and acts on a pressure sensor arranged in the arc surface through an elastic rubber pad; when the water coal impacts the arc surface of the water coal detection baffle or the water container connected with the lower part of the water coal detection baffle, the impact force acts on the piston rod of the opening and closing driving oil cylinder and is transmitted to the oil-resistant pressure sensor arranged on the cylinder barrel of the opening and closing driving oil cylinder and the force measuring sensor arranged at the position of the hinge hole through the piston rod, the piston and the hydraulic oil, so that the impact signals can be detected. Therefore, when water coal scurries in the coal bunker, the water pressure sensor, the force measuring sensor and the oil-resistant pressure sensor can smoothly detect the impact force acting on the water coal detection baffle plate and send out an alarm signal, and meanwhile, the flat gate at the position of the coal bunker opening is quickly started to close, so that the coal bunker outlet is quickly closed, and the problem of water coal scurring can be quickly and effectively solved. During actual operation, the probability of the water coal channeling can be judged according to specific values of the force detected by each test element, the relationship among the force and the like, and the accuracy of the water coal channeling detection is further improved. After the operator obtains the signal of the water coal scurry bin, after the flat gate is reliably closed, the corresponding treatment can be carried out according to the condition of the water coal in the coal bin, and the problem of the water coal scurry bin is thoroughly solved.
Claims (4)
1. The utility model provides an angle modulation vibration feeder for detecting water coal scurries storehouse, contains plate gate, vibration feeder, water coal detection baffle, support frame and measuring force device, the plate gate is installed at the coal bunker coal outlet, the vibration feeder is installed in the plate gate lower part, the vibration cell body pan feeding end hinge of vibration feeder is supported on spring support, and the discharge end is connected with the gyration actuating cylinder, vibration cell body discharge end terminal surface is the arc shape that uses the hinge center as the centre of a circle, its characterized in that: the water coal detection baffle is hinged to a support frame in the front of the discharge end of the vibrating coal feeder, the middle part of the water coal detection baffle is connected with an opening and closing driving device, the other end of the opening and closing driving device is connected to the support frame, one side of the water coal detection baffle, facing the discharge end of the vibrating groove body, is an arc with the hinged center as the circle center, a hinged point is located on an extension line of the arc, when the water coal detection baffle is in a closed position, a gap of 0.1-20 mm is reserved between the water coal detection baffle and the arc surface of the discharge end of the vibrating groove body, the radius of the arc surface of the water coal detection baffle is the sum of the arc radius of the discharge end face of the vibrating groove body and the reserved gap value between the water coal detection baffle and the discharge end of the vibrating groove body, the lower part of the water coal detection baffle is connected with a water container with an open upper part and a closed structure, and the water container water volume and the stress state on the water coal detection baffle or a connecting part of the water coal detection baffle are measured by installing the water coal detection baffle or the connecting part of the water coal detection baffle A force measuring device;
the device for measuring the water quantity of the water container is a water pressure sensor, the water pressure sensor is arranged at the bottom of the water container, and the width of the water container is larger than that of a coal outlet of the vibration coal feeder;
the force measuring device for measuring the stress state on the water coal detection baffle comprises a force measuring sensor and an oil-resistant pressure sensor;
when the force measuring device is a force measuring sensor, the force measuring sensor is arranged at the position of a hinge hole on the support frame, and a force measuring surface of the force measuring sensor is tightly propped against the outer surface of the hinge shaft;
or the force measuring sensor is arranged at the position of a hinge hole on the support frame or the water coal detection baffle, and the force measuring surface of the force measuring sensor is tightly propped against the outer surface of the hinge shaft;
the start-stop driving device is a start-stop driving oil cylinder, one end of the start-stop driving oil cylinder is hinged to the water coal detection baffle, the other end of the start-stop driving oil cylinder is hinged to the supporting frame, and the start-stop driving oil cylinder is provided with a stroke control device;
when the force measuring device is an oil pressure resistant sensor, the oil pressure resistant sensor is arranged on a cylinder barrel of the opening and closing driving oil cylinder, and a force measuring surface of the oil pressure resistant sensor is connected with oil in the cylinder barrel of the opening and closing driving oil cylinder.
2. The angle-modulated vibration coal feeder for detecting the water coal channeling bin according to claim 1, wherein: and a transition sleeve is arranged between the hinge hole and the hinge shaft or between the hinge hole and the hinge shaft, and the force measuring surface of the force measuring sensor is tightly propped against the outer surface of the transition sleeve.
3. The angle-modulated vibration coal feeder for detecting the water coal channeling bin according to claim 2, wherein: the number of the force measuring sensors is not less than 2, and the force measuring sensors are distributed along the periphery of the hinge hole or the hinge hole.
4. The angle-modulated vibration coal feeder for detecting the water coal channeling bin according to claim 1, wherein: the force measuring device for measuring the stress state on the water coal detection baffle further comprises pressure sensors, wherein the pressure sensors are installed on the arc surface of the water coal detection baffle, and at least two rows of the pressure sensors are arranged in the width direction and the height direction of the arc surface of the water coal detection baffle.
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| GB964288A (en) * | 1962-02-16 | 1964-07-22 | Fawkham Dev Ltd | Improvements in or relating to vibratory feeding devices for discrete or granular solid materials |
| CN101497402A (en) * | 2009-03-17 | 2009-08-05 | 孟凡英 | Fixed-weight loading device |
| CN101545379A (en) * | 2009-04-30 | 2009-09-30 | 徐州五洋科技有限公司 | Electrohydraulic anti-pass-through device |
| CN103754659A (en) * | 2014-01-19 | 2014-04-30 | 敖剑忠 | High-efficiency and automatic-control reciprocating feeder |
| CN104477664A (en) * | 2014-11-27 | 2015-04-01 | 广西宏发重工机械有限公司 | Split unloading door device of single cylinder |
| CN204489946U (en) * | 2014-12-20 | 2015-07-22 | 淮北矿业（集团）有限责任公司 | A kind of feeder anti-channeling bin device |
| CN110589426B (en) * | 2019-09-11 | 2020-11-24 | 安徽省皖北煤电集团有限责任公司朱集西分公司 | Water-proof coal vibration coal feeding system for gangue-containing coal bunker |
| CN111646123A (en) * | 2020-07-14 | 2020-09-11 | 郑州大学 | Automatic vibration feeding system |
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