Efficient blockage removing device for conical discharging bin

Abstract

In the discharging process, a turbine (30) rotates, when blockage gradually occurs, a rotating speed detection module (31) detects that the rotating speed of the turbine (30) is reduced through a detection shaft (29), and a connecting assembly is switched from a disconnected state to a transmission state, so that a main shaft (23) drives a tangential shaft (27) to rotate and drives a first spiral blade (28) to rotate so as to scatter blocked blocks, and the blockage is eliminated. Radial thrust is generated to push the materials to the central column (24) so as to reduce contact between the materials and the inner wall of the conical discharging bin (10), and adhesion is reduced; and meanwhile, radial thrust generated by rotation of the first spiral blade (28) and tangential component force of the first spiral blade (28) enable the central column (24) to generate rotating force, and the scraper (21) is driven to rotate so as to scrape and clean materials adhered to the inner wall of the conical discharging bin (10), so that the blockage cleaning effect is improved, the discharging condition is automatically detected in real time, the blockage phenomenon is prevented, and the production efficiency is prevented from being influenced.

Description

Technical Field

[0001] The invention relates to the technical field of needle coke production, in particular to a high-efficiency blockage clearing device for a conical lower silo. Background Art

[0002] In the production process of coal-based needle coke, from raw material pretreatment to packaging and delivery of the final product, each process is inseparable from an efficient and reliable material transmission system. The lower silo, as a bridge connecting different equipment, plays a vital role. In actual production, due to the characteristics of the material itself such as humidity, uneven particle size distribution, adhesion, etc., as well as the influence of environmental conditions, the material is prone to agglomeration to form a blockage or adhere to the side wall of the lower silo, causing material bridging and arching. If not cleaned in time, it will cause poor material flow or even complete blockage, thereby affecting production efficiency and safety. In the prior art, the lower silo is cleared manually, the working environment is harsh, the labor intensity is high, and it is easy to cause danger; the lower silo is cleared by blasting, which is highly dangerous and prone to dust explosions and damage to related equipment; the vibrator is used to apply vibration force and the air cannon is used to spray airflow, which has a single function and poor clearing effect.

[0003] The Chinese utility model patent with the authorization announcement number CN220722196U discloses an automatic clearing device for the material discharge port of the batching bin. The scraper is driven by the worm ring to rotate to scrape off the material adhering to the inner wall of the lower end of the batching barrel. The telescopic end of the electric push rod moves the shaking plate up and down to flip the material, so that the blocked mass is separated and discharged. At the same time, a vibrating motor is provided to assist in clearing the blockage. However, the above scheme only stops the clearing process through manual control when blockage occurs and material cannot be discharged. It cannot prevent the occurrence of blockage, affects production efficiency, and has a poor clearing effect. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing automatic clearing device for the discharge port of the batching bin only stops the clearing process through manual control when blockage occurs and material cannot be discharged. It cannot prevent the occurrence of blockage, affects production efficiency, and has poor clearing effect.

[0005] In order to solve the above problems, the present invention provides a high-efficiency blockage clearing device for a conical material bin, a plurality of scrapers are arranged on the inner wall of the conical material bin at intervals along its circumference, a motor is arranged on the top of the conical material bin, the output end of the motor is connected to a main shaft, a center column connected to the scraper is rotatably provided on the main shaft, the main shaft is inserted in the cavity of the center column and is provided with an eccentric wheel to make the center column vibrate; a plurality of tangential shafts are rotatably provided on the center column at intervals along its circumference, a spiral blade is provided on the tangential shaft, and the main shaft and the tangential shaft can be transmitted or disconnected through a connecting assembly; a detection shaft is rotatably provided on the lower side of the center column, a turbine is provided at the lower end of the detection shaft, and material unloading causes the turbine to rotate, a speed detection module corresponding to the detection shaft is provided in the cavity of the center column, and when blockage occurs and the speed of the detection shaft decreases, the main shaft is transmitted to the tangential shaft through the connecting assembly.

[0006] The conical lower silo efficient blockage clearing device provided by the present invention also has the following technical features: The connecting assembly includes a worm wheel and a worm that mesh with each other. The tangential shaft is inserted into the cavity of the central column and is provided with a worm wheel. The worm is hollow and slidably provided with a clutch push rod. The end of the clutch push rod that is close to the main shaft is provided with a bite plate relative to each other. When a blockage occurs and the speed of the detection shaft decreases, the clutch push rod can slide until the two bite plates bite, so that the worm and the main shaft rotate synchronously.

[0007] An electromagnet is provided on the worm, a spring is provided between the electromagnet and the clutch push rod, and a control module is provided in the cavity of the central column. When a blockage occurs and the speed detection module detects that the speed of the detection shaft decreases, the control module controls the electromagnet to be energized to generate a repulsive force on the clutch push rod.

[0008] The central column is in the shape of an inverted cone with a larger top and a smaller bottom. Two spiral blades are arranged on the outer surface of the central column from top to bottom.

[0009] The scraper is provided with air distribution holes along its length direction, and the outer side of the scraper is provided with air injection holes connected with the air distribution holes. The plurality of air injection holes are arranged at intervals along the length direction of the scraper, and the scraper is provided with a cleaning head corresponding to the air injection holes.

[0010] The cleaning head is inserted into the air jet hole and a gap is formed between the cleaning head and the air jet hole.

[0011] The upper side of the conical lower bin is open and provided with a cover plate, an air intake side pipe is provided on the cover plate, one end of the air intake side pipe is connected to an external air source, and the other end is connected to an air equalizing ring, and an air equalizing ring groove connected to the air intake side pipe is provided on the inner side of the air equalizing ring; A center tube is sleeved on the main shaft, the upper end of the center tube is sealed and inserted in the air equalizing ring, the center tube is provided with side holes corresponding to the air equalizing ring grooves, the lower end of the center tube is connected to the center column, the center column is provided with a high-pressure air circuit connected to the center tube, the center column is connected to the scraper through a supporting side tube, one end of the supporting side tube is connected to the high-pressure air circuit, and the other end is connected to the air equalizing hole.

[0012] A plurality of engagement grooves are arranged at intervals along the circumference of the side where the two engagement plates are close to each other, and engagement teeth are formed between adjacent engagement grooves. The engagement grooves on the engagement plate can be correspondingly engaged with the engagement teeth on the other engagement plate.

[0013] An axial keyway is provided in the worm, and a sliding key is correspondingly provided on the clutch push rod.

[0014] Both ends of the worm are rotatably provided with support tubes, and a plurality of support rods are circumferentially spaced apart on the support tubes, and the ends of the support rods are connected to the central column.

[0015] The present invention has the following beneficial effects: during the material unloading process, the main shaft drives the eccentric wheel to rotate, so that the center column vibrates to reduce the probability of blockage; at the same time, the material unloading process causes the turbine to rotate. When blockage gradually occurs, the speed detection module detects the decrease in the speed of the turbine through the detection shaft, and the connecting component switches from the disconnected state to the transmission state, so that the main shaft drives the tangential shaft to rotate, driving the spiral blades to rotate to break up the blocked clumps, and generating radial thrust to push the material toward the center column to reduce contact with the inner wall of the conical material unloading bin and reduce adhesion; at the same time, the radial thrust generated by the rotation of the spiral blades, its tangential component force causes the center column to generate a rotational force, and drives the scraper to rotate to scrape and clean the material adhering to the inner wall of the conical material unloading bin, thereby improving the blockage clearing effect, thereby realizing automatic real-time detection of the material unloading situation, preventing the occurrence of blockage, and avoiding affecting production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial cross-sectional view of the present invention; Figure 2 for Figure 1 A partial view of Figure 3 for Figure 2 A partial cross-sectional view of Figure 4 is a schematic diagram of the structure of the connection components; Figure 5 for Figure 3 A partial enlarged view of the middle A; Figure 6 for Figure 3 A partial enlarged view of point B in the middle; Figure 7 for Figure 2 A transverse cross-sectional view of Figure 8 This is a schematic diagram of the structure of the central column. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0018] like Figures 1 to 8 As shown, the conical lower bin efficient blockage clearing device of the present invention has a plurality of scrapers 21 arranged at intervals along the circumference of the inner wall of the conical lower bin 10, a motor 22 is arranged at the top of the conical lower bin 10, the output end of the motor 22 is connected to a main shaft 23, a center column 24 connected to the scraper 21 is rotatably arranged on the main shaft 23, the main shaft 23 is inserted into a cavity 25 of the center column 24 and is provided with an eccentric wheel 26 to make the center column 24 vibrate; a plurality of cutting blades 21 are rotatably arranged on the center column 24 at intervals along the circumference thereof The main shaft 23 and the tangential shaft 27 are provided with a spiral blade 28, and the main shaft 23 and the tangential shaft 27 can be transmitted or disconnected through a connecting assembly; a detection shaft 29 is rotatably provided on the lower side of the central column 24, and a turbine 30 is provided at the lower end of the detection shaft 29. The turbine 30 is rotated when feeding, and a speed detection module 31 corresponding to the detection shaft 29 is provided in the cavity 25 of the central column 24. When blockage occurs and the speed of the detection shaft 29 decreases, the main shaft 23 is transmitted to the tangential shaft 27 through the connecting assembly.

[0019] During the material unloading process, the main shaft 23 drives the eccentric wheel 26 to rotate, causing the center column 24 to vibrate to reduce the probability of blockage; at the same time, the material unloading process causes the turbine 30 to rotate. When blockage gradually occurs, the speed detection module 31 detects the decrease in the speed of the turbine 30 through the detection shaft 29, and the connecting component switches from the disconnected state to the transmission state, so that the main shaft 23 drives the tangential shaft 27 to rotate, driving the spiral blade 28 to rotate to break up the blocked clumps, and generating radial thrust to push the material toward the center column 24 to reduce contact with the inner wall of the conical material unloading bin 10 and reduce adhesion; at the same time, the radial thrust generated by the rotation of the spiral blade 28, its tangential component force causes the center column 24 to generate a rotational force, and drives the scraper 21 to rotate to scrape and clean the material adhering to the inner wall of the conical material unloading bin 10, thereby improving the blockage clearing effect, thereby realizing automatic real-time detection of the material unloading situation, preventing the occurrence of blockage, and avoiding affecting production efficiency.

[0020] Among them, the upper side of the conical lower silo 10 is open and provided with a cover plate 55, on which a motor 22 is installed through a motor bracket 11, and the motor 22 is equipped with a corresponding power supply and electronic control module. The conical lower silo 10 is provided with a mounting assembly to fix the conical lower silo 10 and connect it with other equipment. A pneumatic vibrator may also be provided on the outer wall of the conical lower silo 10 to further improve the clearing effect. A feed port 12 is provided on the cover plate 55, and a discharge port 13 is provided on the lower side of the conical lower silo 10, and the turbine 30 is close to the top of the discharge port 13. Valves are provided on the feed port 12 and the discharge port 13. The size of the conical lower silo 10, the taper of the side wall, and the size of the feed port 12 and the discharge port 13 can be set selectively.

[0021] The center column 24, the main shaft 23, the detection shaft 29 and the conical lower bin 10 are all coaxially arranged, and the rotational connection between the center column 24 and the main shaft 23, the detection shaft 29 and the tangential shaft 27 is achieved by a sealing ring and a bearing to achieve a rotational sealing connection. Figure 7 , Figure 8 As shown, through holes are provided on both the upper and lower sides of the center column 24, the main shaft 23 is rotatably inserted into the through hole on the upper side, and the detection shaft 29 is rotatably inserted into the through hole on the lower side; through holes are also provided on the side of the center column 24, and the tangential shaft 27 is rotatably inserted into the through hole on the side. Figure 8 As shown, the center column 24 includes two upper and lower half bodies formed by casting, and is combined by flange connection to facilitate the installation of components in the cavity 25. At the same time, the sealing should be ensured to prevent materials from entering the cavity 25.

[0022] Among them, the output end of the motor 22 drives the main shaft 23 and the eccentric wheel 26 to rotate to generate vibration. Since the main shaft 23 is rotatably connected with the center column 24, the center column 24 generates vibration. In addition, a shock absorbing component is provided between the output end of the motor 22 and the main shaft 23 to isolate or absorb vibration and reduce damage to the motor 22. The shock absorbing component can adopt a structure such as an elastic coupling, a shock absorbing pad or a shock absorbing block. The eccentric wheel 26 is a rotating wheel with uneven mass, which generates vibration when rotating. It is an existing product, and the specific size, model and installation method are all existing technologies.

[0023] One side of the scraper 21 contacts the inner wall of the conical discharge bin 10, and the other side is connected to the central column 24. The lower end of the scraper 21 can extend into the discharge port 13 to clean the material adhered to the inner wall of the discharge port 13. The number of scrapers 21 is preferably 3. The tangential axis 27 forms an angle with the radial direction of the main axis 23, that is, there is a certain distance between the tangential axis 27 and the main axis 23, and the number of the tangential axis 27 is preferably 3, and is staggered with the scrapers 21 to avoid motion interference.

[0024] Among them, the rotation direction of the spiral blade 28 is set corresponding to the rotation direction of the main shaft 23, so that the radial thrust generated by the rotation of the spiral blade 28 can push the material toward the center column 24; the pitch, diameter, number of turns and other dimensions of the spiral blade 28 can be set according to actual selection and are not limited here.

[0025] Preferably, see Figure 3 , Figure 4 , Figure 5 The connecting assembly includes a worm wheel 32 and a worm 33 that mesh with each other. The tangential shaft 27 is inserted into the cavity 25 of the central column 24 and is provided with a worm wheel 32. The worm 33 is hollow and slidably provided with a clutch push rod 34. The end of the clutch push rod 34 that is close to the main shaft 23 is provided with a bite piece 35 opposite to each other. When a blockage occurs and the speed of the detection shaft 29 decreases, the clutch push rod 34 can slide until the two bite pieces 35 bite, so that the worm 33 and the main shaft 23 rotate synchronously.

[0026] When a blockage occurs and the speed of the detection shaft 29 decreases, the clutch push rod 34 can slide to the two bite pieces 35 to bite, and the clutch push rod 34 drives the worm 33 and the main shaft 23 to rotate synchronously, driving the worm wheel 32, the tangential shaft 27 and the spiral blade 28 to rotate accordingly. Since the worm wheel 32 and the worm 33 are self-locking, when the material is discharged normally without blockage, the center column 24 and the scraper 21 are stationary and do not rotate, avoiding the mutual influence of the scraper 21 and the material discharge process.

[0027] One side of the bite piece 35 is fixed to the clutch push rod 34 or the main shaft 23, and the other side can be engaged with each other for transmission. The bite piece 35 can be selectively set in the way of engaging transmission, which is not limited here. For example, a plurality of engaging convex teeth can be set on the side corresponding to the bite piece 35 for meshing transmission. Of course, a friction layer can also be set on the side corresponding to the bite piece 35 for friction transmission.

[0028] Preferably, see Figure 4 , Figure 5 An electromagnet 36 is provided on the worm 33, a spring 37 is provided between the electromagnet 36 and the clutch push rod 34, and a control module 38 is provided in the cavity 25 of the center column 24. When a blockage occurs and the speed detection module 31 detects that the speed of the detection shaft 29 decreases, the control module 38 controls the electromagnet 36 to be energized to generate a repulsive force on the clutch push rod 34.

[0029] When a blockage occurs and the speed detection module 31 detects that the speed of the detection shaft 29 has dropped, the control module 38 controls the electromagnet 36 to be energized to generate a repulsive force on the clutch push rod 34, so that the clutch push rod 34 slides to the two engaging plates 35 to engage, and the clutch push rod 34 drives the worm 33 to rotate synchronously with the main shaft 23, driving the worm wheel 32, the tangential shaft 27 and the spiral blade 28 to rotate accordingly.

[0030] Among them, the material of one end of the clutch push rod 34 close to the electromagnet 36 is a permanent magnet, and the electromagnet 36 can generate a repulsive force on the clutch push rod 34 after being energized. In addition, the spring 37 is a tension spring, which can generate a pulling force on the clutch push rod 34 to disengage the two bite pieces 35 when the electromagnet 36 is powered off.

[0031] Among them, a power supply and a controller corresponding to the electromagnet 36 may be provided in the support tube 46 at the lower end of the worm 33, and the controller is wirelessly connected to the control module 38, so that the control module 38 can control the electromagnet 36 to be energized through the controller; the control module 38 is integrated with a corresponding processor and power supply, and the speed detection module 31 is wirelessly connected to the control module 38. The control module 38 receives the speed of the detection shaft 29 detected by the speed detection module 31, and performs comparative analysis through the processor. When the speed of the current detection shaft 29 is lower than the preset threshold, the electromagnet 36 is controlled to be energized. For example, during normal material feeding, the speed of the turbine 30 and the detection shaft 29 is 20r / min. If the speed is reduced to the preset threshold of 15r / min, the control module 38 controls the electromagnet 36 to be energized. Of course, the definition and setting of the speed of the turbine 30 for normal material feeding and the preset threshold value of the speed reduction can be selected and set as needed, and are not limited here.

[0032] Among them, see Figure 3 , Figure 5 The speed detection module 31 may include a sensor 39 and a detection gear 40. The detection gear 40 is made of metal and is arranged on the detection shaft 29. The detection end of the sensor 39 is close to the detection gear 40. The working principle of the speed detection module 31 utilizes the Hall effect. When the detection shaft 29 rotates, the teeth of the detection gear 40 pass through the sensor 39 in sequence, causing the magnetic field intensity around the sensor 39 to change periodically. These changes are captured by the sensor and converted into electrical signals for output. The specific structure and working principle of the speed detection module 31 are both existing technologies and are not described here. In addition, the support tube 46 on the lower side of the worm 32 can be sealed with a magnetic field isolation material to prevent the speed detection module 31 from being interfered by the electromagnet 36. Of course, the speed detection module 31 can also adopt other forms to obtain the speed of the detection shaft 29, such as using an existing contact or non-contact mechanical tachometer to measure the speed, or using a photoelectric sensor to measure the speed, or using an electronic counter and a pulse generator to measure the speed, or using a laser Doppler velocimeter to measure the speed, etc.

[0033] Preferably, the central column 24 is in the shape of an inverted cone with a larger top and a smaller bottom, and a spiral blade 2 41 is provided on the outer surface of the central column 24 from top to bottom.

[0034] The inverted cone-shaped center column 24 fits the shape of the conical discharge bin 10, so that the upper material can move downward between the center column 24 and the conical discharge bin 10 for discharge. At the same time, the radial thrust generated by the rotation of the spiral blade 1 28 pushes the lateral material toward the center column 24, so that the lateral material can move downward along the outer surface of the center column 24 for discharge. In addition, the inverted cone-shaped center column 24 also facilitates the material to flow toward the turbine 30 and rotate it; and the center column 24 drives the spiral blade 2 41 to rotate synchronously to facilitate the downward movement of the material, and at the same time cooperates with the spiral blade 1 28 to break up the blocked clumps, thereby improving the clearing effect and efficiency.

[0035] The width direction of the spiral blade 41 is perpendicular to the outer surface of the center column 24 , that is, the spiral blade 41 is tilted from top to bottom and from the center to the edge, so that the material moves downward under the action of the spiral blade 41 to avoid poor material discharge.

[0036] Preferably, see Figure 3 , Figure 6 The scraper 21 has an air distribution hole 51 opened inside along its length direction, and an air injection hole 52 connected to the air distribution hole 51 is opened on the outer side of the scraper 21. The plurality of air injection holes 52 are arranged at intervals along the length direction of the scraper 21, and a cleaning head 53 corresponding to the air injection hole 52 is provided on the scraper 21.

[0037] The center column 24 drives the scraper 21 to rotate, and at the same time the jet hole 52 sprays air toward the inner wall of the conical lower silo 10, cooperating with the sweeping action of the cleaning head 53 to clean the material adhering to the inner wall of the conical lower silo 10, thereby improving the side wall cleaning effect and cleaning efficiency.

[0038] Among them, the arrangement mode, setting size and number of the air jet holes 52 can be set selectively, for example, the air jet holes 52 can be set in multiple rows along the length direction of the scraper 21, and each row of air jet holes 52 is staggered to improve the side wall cleaning effect; the arrangement mode, setting size and number of the cleaning heads 53 can also be set selectively, for example, the cleaning heads 53 can be set inside or outside the air jet holes 52, and can be set at intervals or continuously. The setting of the air jet holes 52 and the cleaning heads 53 should correspond to the size of the scraper 21, and the width of the scraper 21 should be minimized to reduce the impact of the scraper 21 on the material discharge when it is stationary.

[0039] Preferably, there is an angle between the jet hole 52 and the vertical direction of the scraper 21, that is, the jet hole 52 is arranged obliquely, and the specific inclination direction can be the same as or opposite to the rotation direction of the scraper 21, so as to clean the material adhering to the inner wall of the conical lower silo 10. Of course, the jet hole 52 can also be arranged perpendicular to the scraper 21.

[0040] Preferably, the cleaning head 53 is inserted into the jet hole 52 and a gap is formed between the cleaning head 53 and the jet hole 52. When the central column 24 and the scraper 21 are stationary, that is, when the material is normally discharged, the probability of the material entering the jet hole 52 is reduced, the structure is compact, and the jet hole 52 ejects annular high-pressure gas to improve the cleaning effect.

[0041] Preferably, see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 The upper side of the conical lower bin 10 is open and provided with a cover plate 55, on which a one-way exhaust valve 54 is provided for exhausting gas, and an air intake side pipe 56 is provided on the cover plate 55, one end of the air intake side pipe 56 is connected to an external air source, and the other end is connected to an air equalizing ring 57, and an air equalizing ring groove 58 connected to the air intake side pipe 56 is provided on the inner side of the air equalizing ring 57; The main shaft 23 is sleeved with a center tube 59, the upper end of the center tube 59 is sealed and inserted into the air equalizing ring 57, the center tube 59 is provided with a side hole 60 corresponding to the air equalizing ring groove 58, the lower end of the center tube 59 is connected to the center column 24, the center column 24 is provided with a high-pressure air circuit 61 connected to the center tube 59, the center column 24 is connected to the scraper 21 through a supporting side tube 62, one end of the supporting side tube 62 is connected to the high-pressure air circuit 61, and the other end is connected to the air equalizing hole 51.

[0042] High-pressure gas enters the gas equalizing ring groove 58 of the gas equalizing ring 57 from the external gas source and the air inlet side pipe 56, then enters the central tube 59 through the side hole 60 on the central tube 59, and then enters the gas equalizing hole 51 along the central tube 59, the high-pressure gas path 61, and the supporting side pipe 62, and finally is ejected through the jet hole 52, thereby supplying gas to the jet hole 52 while the central tube 59 rotates.

[0043] The upper end of the center tube 59 is sealed and rotationally sealed with the main shaft 23, and the center tube 59 is rotationally sealed and connected with the cover plate 55; the air intake side pipe 56 is installed on the cover plate 55 through the pipeline frame 63; the external gas source can provide high-pressure inert gas, preferably nitrogen or argon, to avoid chemical reactions caused by oxygen in the air. The inner diameter of the center tube 59 is larger than the diameter of the main shaft 23, so that there is a gap between the center tube 59 and the main shaft 23, which is convenient for high-pressure gas to pass through. The high-pressure gas circuit 61 is not connected to the cavity 25 of the center column 24 to ensure the airtightness of the high-pressure gas circuit 61.

[0044] Among them, the supporting side tube 62 is preferably arranged perpendicular to the scraper 21, and reinforcing ribs are provided at the connections between the supporting side tube 62 and the central column 24 and the scraper 21 to improve the connection stability; further, a side rod 64 is also provided between the central column 24 and the scraper 21, preferably, the side rod 64, the supporting side tube 62 and the outer wall of the central column 24 form a triangle to further improve the connection stability.

[0045] Preferably, see Figure 4 , Figure 5 A plurality of engaging grooves 42 are provided at intervals along the circumference of the side where the two engaging plates 35 are close to each other, and engaging teeth 43 are formed between adjacent engaging grooves 42 . The engaging grooves 42 on the engaging plate 35 can engage with the engaging teeth 43 on the other engaging plate 35 .

[0046] The engagement grooves 42 and the engagement teeth 43 have the same shape and size, so that when the main shaft 23 rotates at a high speed, the sliding of the clutch push rod 34 can make the engagement grooves 42 of the two engagement plates 35 mesh with the corresponding engagement teeth 43.

[0047] Preferably, see Figure 4 , Figure 5 An axial keyway 44 is provided in the worm 33, and a sliding key 45 is correspondingly provided on the clutch push rod 34. The cross-section of the sliding hole and the clutch push rod 34 is a non-circular shape such as a square or an ellipse, so that the clutch push rod 34 can drive the worm 33 to rotate synchronously.

[0048] Preferably, see Figure 4 , Figure 5 Both ends of the worm 33 are rotatably provided with support tubes 46, and a plurality of support rods 47 are circumferentially spaced on the support tubes 46. The ends of the support rods 47 are connected to the central column 24 to realize rotational support for the worm 33.

[0049] The working principle of the present invention is as follows: The material enters the conical discharge bin 10 from the feed port 12 and is discharged from the discharge port 13. During the discharge process, the output end of the motor 22 drives the main shaft 23 and the eccentric wheel 26 to rotate, so that the central column 24 vibrates to reduce the probability of blockage, and at the same time, the material can rotate when it flows through the blades of the worm gear 30; when blockage gradually occurs, the speed detection module 31 detects that the speed of the detection shaft 29 and the turbine 30 decreases, and controls the electromagnet 36 to be energized through the control module 38 to generate a repulsive force on the clutch push rod 34, so that the clutch push rod 34 slides to the two bite pieces 35 to bite, and through the axial keyway 44 and the sliding key 45, the clutch push rod 34 cooperates, and the worm 33 and the main shaft 23 rotate synchronously, driving the worm gear 32, the tangential shaft 27 and the spiral blade 28 to rotate accordingly. The rotation of the spiral blade 28 can break up the blocking clumps and generate radial thrust. The force pushes the material toward the center column 24 to reduce the contact with the inner wall of the conical lower silo 10 and reduce the adhesion; at the same time, the spiral blade 28 rotates to generate radial thrust, and its tangential component makes the center column 24 generate rotational force and drives the scraper 21 to rotate. At the same time, the jet hole 52 sprays annular gas toward the inner wall of the conical lower silo 10, and cooperates with the sweeping action of the cleaning head 53 to clean the material adhering to the inner wall of the conical lower silo 10, thereby improving the side wall cleaning effect and cleaning efficiency; at the same time, the center column 24 and the spiral blade 41 rotate synchronously, which further facilitates the downward movement of the material, and cooperates with the spiral blade 28 to break up the blocked clumps, thereby improving the clearing effect and clearing efficiency; thereby realizing automatic real-time detection of the material discharge situation, preventing the occurrence of blockage, and avoiding affecting production efficiency.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A conical lower silo efficient blockage clearing device, characterized in that: A plurality of scrapers (21) are provided at intervals along the circumference of the inner wall of the conical material lowering bin (10); a motor (22) is provided at the top of the conical material lowering bin (10); an output end of the motor (22) is connected to a main shaft (23); a central column (24) connected to the scrapers (21) is rotatably provided on the main shaft (23); the main shaft (23) is inserted into a cavity (25) of the central column (24) and is provided with an eccentric wheel (26) so as to vibrate the central column (24); a plurality of tangential shafts (27) are rotatably provided on the central column (24) at intervals along the circumference thereof; the tangential shafts (27) are rotatably provided on the central column (24); A spiral blade (28) is provided on the central column (27), and the main shaft (23) and the tangential shaft (27) can be connected or disconnected through a connecting assembly; a detection shaft (29) is rotatably provided on the lower side of the central column (24), and a turbine (30) is provided at the lower end of the detection shaft (29), and the turbine (30) is rotated by feeding, and a speed detection module (31) corresponding to the detection shaft (29) is provided in the cavity (25) of the central column (24). When a blockage occurs and the speed of the detection shaft (29) decreases, the main shaft (23) is transmitted to the tangential shaft (27) through the connecting assembly.

2. The conical lower silo efficient blockage clearing device according to claim 1 is characterized in that: The connecting assembly comprises a worm wheel (32) and a worm (33) meshing with each other. The tangential shaft (27) is inserted into the cavity (25) of the central column (24) and is provided with a worm wheel (32). The worm (33) is hollow and slidably provided with a clutch push rod (34). The clutch push rod (34) and the main shaft (23) are provided with a bite piece (35) at one end thereof which is close to each other. When a blockage occurs and the rotation speed of the detection shaft (29) decreases, the clutch push rod (34) can slide until the two bite pieces (35) bite, so that the worm (33) and the main shaft (23) rotate synchronously.

3. The conical lower silo efficient blockage clearing device according to claim 2 is characterized in that: An electromagnet (36) is provided on the worm (33), a spring (37) is provided between the electromagnet (36) and the clutch push rod (34), and a control module (38) is provided in the cavity (25) of the central column (24). When a blockage occurs and the speed detection module (31) detects that the speed of the detection shaft (29) decreases, the control module (38) controls the electromagnet (36) to be energized to generate a repulsive force on the clutch push rod (34).

4. The conical lower silo efficient blockage clearing device according to claim 1 is characterized in that: The central column (24) is in the shape of an inverted cone that is larger at the top and smaller at the bottom. The outer surface of the central column (24) is provided with two spiral blades (41) from top to bottom.

5. The conical lower silo efficient blockage clearing device according to claim 1 is characterized in that: The scraper (21) is provided with an air distribution hole (51) along its length direction, and an air injection hole (52) connected to the air distribution hole (51) is provided on the outer side of the scraper (21). The plurality of air injection holes (52) are arranged at intervals along the length direction of the scraper (21), and a cleaning head (53) corresponding to the air injection hole (52) is provided on the scraper (21).

6. The conical lower silo efficient blockage clearing device according to claim 5 is characterized in that: The cleaning head (53) is inserted into the air jet hole (52) and a gap is formed between the cleaning head and the air jet hole (52).

7. The conical lower silo efficient blockage clearing device according to claim 5 is characterized in that: The upper side of the conical lower material bin (10) is open and provided with a cover plate (55), an air intake side pipe (56) is provided on the cover plate (55), one end of the air intake side pipe (56) is connected to an external air source, and the other end is connected to an air equalizing ring (57), and an air equalizing ring groove (58) communicating with the air intake side pipe (56) is provided on the inner side of the air equalizing ring (57); The main shaft (23) is sleeved with a center tube (59), the upper end of the center tube (59) is sealed and inserted into the gas equalizing ring (57), the center tube (59) is provided with a side hole (60) corresponding to the gas equalizing ring groove (58), the lower end of the center tube (59) is connected to the center column (24), the center column (24) is provided with a high-pressure gas path (61) connected to the center tube (59), the center column (24) is connected to the scraper (21) through a supporting side tube (62), one end of the supporting side tube (62) is connected to the high-pressure gas path (61), and the other end is connected to the gas equalizing hole (51).

8. The conical lower silo efficient blockage clearing device according to claim 2 is characterized in that: A plurality of bite grooves (42) are provided at intervals along the circumference of the side where the two bite plates (35) are close to each other, and bite teeth (43) are formed between adjacent bite grooves (42). The bite grooves (42) on the bite plate (35) can be correspondingly engaged with the bite teeth (43) on the other bite plate (35).

9. The conical lower silo efficient blockage clearing device according to claim 2 is characterized in that: An axial keyway (44) is provided in the worm (33), and a sliding key (45) is correspondingly provided on the clutch push rod (34).

10. The conical lower silo efficient blockage clearing device according to claim 2, characterized in that: Both ends of the worm (33) are rotatably provided with support cylinders (46), and a plurality of support rods (47) are circumferentially spaced apart on the support cylinder (46), and the ends of the support rods (47) are connected to the central column (24).

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