Automatic coal sample sampler for coal as fired transportation

Abstract

The invention relates to the technical field of automatic coal sample sampling, in particular to an automatic coal sample sampler for coal as fired transportation, which comprises an adjusting assembly, a sampling head is arranged at the upper end of a sampling machine, and a transmission assembly and an opening and closing assembly are arranged on the back of the sampling head; the cleaning mechanism comprises a scraping plate arranged in the inner cavity of the sampling head, and a telescopic assembly is arranged on the back of the scraping plate; the anti-blocking mechanism comprises an inclined pressing plate, a first limiting assembly is arranged at the lower end of the inclined pressing plate, an upper push plate is arranged at the lower end of the inclined pressing plate, a second limiting assembly is arranged on the upper portion of the upper push plate, a guide assembly is arranged at the lower end of the second limiting assembly, a telescopic guide rod and a second pull rope are arranged in the guide assembly, and the other end of the second pull rope is fixedly connected with a beating hammer. Movable seats are arranged at the lower ends of the beating hammers. The problems that in the prior art, the sampling representativeness is poor due to the fact that the opening size of a sampling head cannot be adjusted, metering deviation is caused by coal cinder residues in an inner cavity after sampling, and manual handling is needed when coal briquettes are clamped are solved.

Description

Technical Field

[0001] This invention relates to the field of automatic coal sampling technology, and in particular to an automatic coal sampler for transporting coal into the furnace. Background Technology

[0002] Existing coal sampling devices for coal transport in furnaces mostly consist of a conveyor belt, a sampler, and a sampling head. The sampling head collects coal samples from the conveyor belt, providing basic samples for coal quality analysis and testing in the furnace, and supporting subsequent combustion efficiency assessment and coal quality control.

[0003] However, in actual operation, the existing equipment has a fixed sampling head opening size, which cannot be flexibly adjusted according to the coal particle size (such as lump coal and fine coal) and the required sampling amount. This can easily lead to large coal lumps blocking the sampling port or insufficient sampling of small coal particles, resulting in poor sample representativeness and affecting the accuracy of coal quality test results. Furthermore, coal slag is easily left in the inner cavity of the sampling head after sampling. The accumulation of residual coal slag not only contaminates subsequent coal samples but also changes the actual volume of the sampling head, causing deviations in the sampling amount measurement. At the same time, when coal lumps block the inner cavity of the sampling head, there is no automatic unblocking mechanism, which requires manual shutdown for disassembly and cleaning. This interrupts the transportation and sampling process, reduces operating efficiency, and may also scratch the inner wall of the sampling head or damage parts due to forced cleaning, increasing equipment maintenance costs and downtime losses. Summary of the Invention

[0004] In view of the problems in the above or existing technologies, such as the sampling head opening size not being adjustable, resulting in poor sampling representativeness, residual coal slag in the inner cavity after sampling causing measurement deviation, and the need for manual handling when coal blocks are stuck, this invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An adjustment component, comprising a transmission belt and a sampler, wherein a sampling head is provided at the upper end of the sampler, the sampling head is telescopic, a transmission component for driving the sampling head to circulate and sample is provided on the back of the sampling head, and an opening and closing component for adjusting the size of the sampling opening of the sampling head; a cleaning mechanism, comprising a scraper disposed in the inner cavity of the sampling head, a telescopic component being provided on the back of the scraper, the telescopic component being used to push the scraper to clean residual coal slag in the inner cavity of the sampling head; and an anti-blocking mechanism, comprising an inclined pressure plate, a first limiting component being provided at the lower end of the inclined pressure plate, an upper push plate being provided on one side of the lower end of the inclined pressure plate, a second limiting component being provided at the upper part of the upper push plate, a guide component being provided at the lower end of the second limiting component, a telescopic guide rod and a second pull rope being slidably disposed within the guide component, a hammer being fixedly connected to the other end of the second pull rope, and a movable seat being rotatably disposed at the lower end of the hammer, the movable seat being fixedly connected to the sampler.

[0006] In a preferred embodiment of the automatic coal sampler for coal transportation in the furnace according to the present invention, the transmission component includes an outer sleeve rod fixedly disposed in the middle of the back of the sampling head, and a motor is fixedly connected to the middle of the end of the outer sleeve rod away from the sampling head.

[0007] As a preferred embodiment of the automatic coal sampler for coal transportation in the furnace of the present invention, the opening and closing component includes a square groove formed in the middle of two telescopic ends on the back of the sampling head. A rack is fixedly installed in the inner cavity of each of the two square grooves. A gear is meshed between the two racks. A drive shaft is fixedly installed in the middle of the gear. The drive shaft is inserted into the middle of the outer sleeve rod. A knob is fixedly installed on the outside of the other end of the drive shaft. A ratchet is fixedly installed on one side of the sampling head. A pawl is engaged on the teeth of the ratchet. The pawl is rotatably located on the outer surface of the back of the outer sleeve rod.

[0008] As a preferred embodiment of the automatic coal sampler for coal transportation in the furnace of the present invention, the telescopic component includes a push rod fixedly disposed on the back of the scraper, the push rod being inserted into the inner cavity of the transmission shaft, the push rod being located at one end of the scraper and movably passing through the back baffle of the sampling head, and the other end being fixedly disposed with a horizontal guide rod.

[0009] As a preferred embodiment of the automatic coal sampler for coal transportation in the furnace of the present invention, the telescopic assembly further includes a back plate fixedly installed on the upper inner wall of the sampler. An inclined guide groove is provided on the upper part of one end of the back plate side wall. The inclined guide groove is used to guide the horizontal guide rod and to push the push rod to push the scraper to push out the coal slag remaining in the inner cavity of the sampling head. A compression spring is sleeved on the outside of one end of the push rod located in the inner cavity of the transmission shaft. The compression spring is used to reset after the push rod drives the sampling head to push out the coal slag.

[0010] As a preferred embodiment of the automatic coal sampler for coal transportation in the furnace of the present invention, the first limiting component includes a first retraction groove formed on the side wall of the back plate, a first return spring is provided in the inner cavity of the first retraction groove, a trapezoidal block is fixedly provided at one end of the opening of the first retraction groove, the trapezoidal block abuts against the upper and lower surfaces of the inclined pressure plate for limiting, the upper surface of the inclined pressure plate is set as the lower inclined surface of the inner cavity of the inclined guide groove and cooperates with the upper inclined surface of the inner cavity of the inclined guide groove to guide the horizontal guide rod.

[0011] As a preferred embodiment of the automatic coal sampler for coal transportation in the furnace of the present invention, the second limiting component includes a movable column that abuts against the upper push plate, a first pull rope is fixedly connected to the middle of the movable column, a wedge block is fixedly connected to the other end of the first pull rope, and a second reset spring is fixedly provided on the back of the wedge block.

[0012] In a preferred embodiment of the automatic coal sampler for coal transportation in the furnace according to the present invention, the second limiting component further includes a vertical sliding groove formed on the back plate. The inner cavity of the vertical sliding groove is slidably limited to the movable column. An arc-shaped rope groove is provided at the lower end of the vertical sliding groove. The inner cavity of the arc-shaped rope groove is slidably limited to the first pull rope. A second retraction groove is provided at the lower end of the arc-shaped rope groove. The inner cavity of the second retraction groove is slidably connected to the wedge block. Both the arc-shaped rope groove and the second retraction groove are formed on the back plate.

[0013] As a preferred embodiment of the automatic coal sampler for coal transportation in the furnace of the present invention, the guiding component includes an arc-shaped guide groove formed on the back plate, the inner cavity of the upper end of the arc-shaped guide groove is connected to the inner cavity of the second retraction groove, a transverse rope groove is provided at the lower end of the arc-shaped guide groove, and an L-shaped hollow tube is fixedly provided on the outside of the other end of the transverse rope groove. The inner cavity of the L-shaped hollow tube and the inner cavity of the transverse rope groove are both provided with a second pull rope sliding limit.

[0014] As a preferred embodiment of the automatic coal sampler for coal transportation in the furnace of the present invention, the guiding component further includes a side protective cover fixedly installed on the outside of the sampler. Two fixing seats are provided in the inner cavity of the side protective cover. One fixing seat is fixedly connected to the bottom surface of the inner cavity of the side protective cover and rotatably connected to the second pull rope. The other fixing seat is fixedly connected to the back of the hammer head of the hammer and is fixedly connected to the second pull rope.

[0015] The beneficial effects of the automatic coal sampler for coal transportation in the furnace of the present invention are as follows:

[0016] 1. By turning the knob, the drive shaft and gear can be rotated. The gear meshes with the rack on the back of the sampling head, driving the telescopic end to extend and retract synchronously, thereby enlarging or reducing the sampling opening. Adjusting the locking structure between the pawl and the ratchet can lock the opening size, preventing the opening from shifting during sampling, thus achieving flexible adjustment of the sampling head opening size and accurately adapting it according to the coal particle size (such as lump coal, fine coal) and the required sampling amount.

[0017] 2. When the sampling head completes sampling and flips upward, the horizontal guide rod moves with the sampling head into the inclined guide groove of the back plate. The inclined guide groove forces the horizontal guide rod to move forward through the guiding action. The telescopic scraper at the front end of the push rod closely fits the inner wall of the sampling head, completely pushing out the residual coal slag. After the slag is pushed out, the compression spring outside the push rod releases its elasticity, driving the scraper and the horizontal guide rod to reset, preparing for the next sampling. This allows the cleaning mechanism to automatically remove the residual coal slag in the inner cavity of the sampling head after each sampling, avoiding the double interference of coal slag accumulation on the sampling.

[0018] 3. The pushing force of the horizontal guide rod on the inclined pressure plate exceeds the limiting force of the first limiting component, forcing the inclined pressure plate to move downward. The horizontal guide rod then pushes the upper push plate and the movable column upward. The movable column pulls the wedge block back through the first pull rope, releasing the limitation on the telescopic guide rod. After the telescopic guide rod extends, the tension of the second pull rope is released, and the hammer flips rapidly under the action of the torsion spring, forcefully striking the side of the sampling head. The vibration shakes off the stuck coal block, thus solving the problem of "manual cleaning interrupting the process and easily damaged parts" in traditional devices, and significantly reducing manual maintenance costs. It also avoids production efficiency losses caused by downtime, protects the inner wall of the sampling head from damage caused by forced cleaning, and extends the service life of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the automatic coal sampler used for transporting coal into the furnace.

[0021] Figure 2 A cross-sectional schematic diagram of the internal structure of the automatic sampler for transporting coal samples into the furnace.

[0022] Figure 3 A schematic diagram of the transmission components of an automatic coal sampler for transporting coal into the furnace.

[0023] Figure 4 A cross-sectional schematic diagram of the internal structure of the outer sleeve rod of the automatic sampler for transporting coal samples into the furnace.

[0024] Figure 5 A schematic diagram of the opening and closing components of an automatic sampler for transporting coal samples into the furnace.

[0025] Figure 6 An exploded schematic diagram of the opening and closing components and the telescopic components of an automatic coal sampler for transporting coal into the furnace.

[0026] Figure 7 A side sectional view of the internal mechanism of the automatic sampler for transporting coal samples into the furnace.

[0027] Figure 8 A side-section enlarged schematic diagram of the internal mechanism of the automatic sampler for transporting coal samples into the furnace.

[0028] Figure 9 This is a schematic diagram of the first limiting component A of the automatic sampler for transporting coal samples into the furnace.

[0029] Figure 10This is a schematic diagram of the second limiting component of the automatic sampler for transporting coal samples into the furnace.

[0030] Figure 11 A schematic diagram of the guide assembly for an automatic coal sampler used for transporting coal into the furnace.

[0031] Figure 12 An enlarged schematic diagram of part B, the guide component of the automatic coal sampler for transporting coal into the furnace.

[0032] In the diagram: 10. Transmission belt; 11. Sampler; 12. Sampling head; 13. Transmission assembly; 131. Outer rod; 132. Motor; 14. Opening / closing assembly; 141. Square slot; 142. Rack; 143. Gear; 144. Transmission shaft; 145. Knob; 146. Ratchet; 147. Pawl; 20. Scraper; 21. Telescopic assembly; 211. Push rod; 212. Horizontal guide rod; 213. Back plate; 214. Angled guide groove; 215. Compression spring; 30. Angled pressure plate; 31. First limit assembly; 311. First retraction. 312. Groove; 313. First return spring; 314. Trapezoidal block; 32. Upper push plate; 33. Second limit assembly; 335. Movable column; 336. First pull rope; 337. Wedge block; 338. Second return spring; 339. Vertical sliding groove; 340. Arc-shaped rope groove; 35. Second retraction groove; 36. Guide assembly; 37. Arc-shaped guide groove; 38. Horizontal rope groove; 39. L-shaped hollow tube; 30. Side protective cover; 311. Fixed seat; 32. Telescopic guide rod; 333. Second pull rope; 344. Hammer; 35. Movable seat. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Example 1, referring to Figures 1-6This is the first embodiment of the present invention. This embodiment provides an automatic coal sampler for transporting coal into the furnace, which can prevent coal blocks from getting stuck in the sampling head 12 during sampling. It includes an adjustment component, which includes a transmission belt 10 and a sampler 11. The sampling head 12 is provided at the upper end of the sampler 11. The sampling head 12 is telescopic. A transmission component 13 for driving the sampling head 12 to circulate and sample is provided on the back of the sampling head 12, and an opening and closing component 14 for adjusting the size of the sampling opening of the sampling head 12; a cleaning mechanism, which includes a scraper 20 provided in the inner cavity of the sampling head 12, and a telescopic component 2 on the back of the scraper 20. 1. The telescopic component 21 is used to push the scraper 20 to clean the residual coal slag inside the sampling head 12; the anti-blocking mechanism includes an inclined pressure plate 30, a first limiting component 31 is provided at the lower end of the inclined pressure plate 30, an upper push plate 32 is provided on one side of the lower end of the inclined pressure plate 30, a second limiting component 33 is provided on the upper part of the upper push plate 32, a guide component 34 is provided at the lower end of the second limiting component 33, a telescopic guide rod 35 and a second pull rope 36 are slidably provided in the guide component 34, a hammer 37 is fixedly connected to the other end of the second pull rope 36, a movable seat 38 is rotatably provided at the lower end of the hammer 37, and the movable seat 38 is fixedly connected to the sampling machine 11.

[0035] Specifically, a torsion spring is provided at the junction of the movable seat 38 and the hammer 37, which enables the hammer 37 to flip and strike the sides of the sampling head 12, thereby knocking off the coal block stuck in the inner cavity of the sampling head 12.

[0036] Furthermore, the transmission assembly 13 includes an outer sleeve 131 fixedly disposed in the middle of the back of the sampling head 12. A motor 132 is fixedly connected to the middle of the end of the outer sleeve 131 away from the sampling head 12. The opening and closing assembly 14 includes a square groove 141 opened in the middle of the two telescopic ends on the back of the sampling head 12. A rack 142 is fixedly disposed in the inner cavity of each of the two square grooves 141. A gear 143 is meshed between the two racks 142. A transmission shaft 144 is fixedly disposed in the middle of the gear 143. The transmission shaft 144 is inserted into the middle of the outer sleeve 131. A knob 145 is fixedly disposed on the outside of the other end of the transmission shaft 144. A ratchet 146 is fixedly disposed on one side of the sampling head 12. A pawl 147 is engaged on the teeth of the ratchet 146. The pawl 147 is rotatably disposed on the outer side of the back surface of the outer sleeve 131.

[0037] The base plate and back plate of the sampling head 12 are both telescopic, which allows for adjustment of the sampling amount according to actual needs. In this device, the motor 132 is existing technology, and its structural principle will not be described in detail here.

[0038] In use, first, according to the size of the coal block to be sampled and the required sampling amount, the knob 145 is turned, which drives the transmission shaft 144 to rotate synchronously. When the transmission shaft 144 rotates, it will drive the gear 143 to rotate. When the gear 143 rotates, it meshes with the racks 142 on both sides, which allows the two racks 142 to move simultaneously towards the center or to move to both sides respectively. This causes the telescopic end on the back plate of the sampling head 12 to move in the same way, thereby enlarging or shrinking the opening of the sampling head 12. After the adjustment is completed, the pawl 147 is engaged with the teeth of the ratchet 146 to prevent the gear 143 from rotating in the opposite direction and to ensure that the opening size is fixed.

[0039] Subsequently, the motor 132 is started, and the motor 132 drives the outer sleeve rod 131 and the sampling head 12 connected thereto to perform cyclical motion, so that the sampling head 12 continuously samples the coal fed into the furnace on the transmission belt 10 according to the preset trajectory.

[0040] Example 2, refer to Figures 1-9 This is the second embodiment of the present invention. Unlike the previous embodiment, based on embodiment 1, this embodiment provides a cleaning mechanism for the automatic coal sampler used for transporting coal into the furnace. This solves the problem of residual coal slag in the inner cavity when the sampling head 12 rotates and flips upward after sampling. It includes a telescopic component 21, which includes a push rod 211 fixedly installed on the back of the scraper 20. The push rod 211 is inserted into the inner cavity of the transmission shaft 144. The push rod 211 is located at one end of the scraper 20, which movably passes through the back baffle of the sampling head 12, and the other end is fixedly installed. The telescopic assembly 21 includes a horizontal guide rod 212 and a back plate 213 fixedly installed on the upper inner wall of the sampler 11. An inclined guide groove 214 is provided on the upper part of one side wall of the back plate 213. The inclined guide groove 214 is used to guide the horizontal guide rod 212 and to push the scraper 20 to push out the coal slag remaining in the inner cavity of the sampling head 12. A compression spring 215 is sleeved on the outside of one end of the push rod 211 located in the inner cavity of the drive shaft 144. The compression spring 215 is used to reset after the push rod 211 drives the sampling head 12 to push out the coal slag.

[0041] Specifically, the scraper 20 and the back plate of the sampling head 12 are the same, both being telescopic, and the scraper 20 has a return spring in its inner cavity that can adapt to the width of the inner cavity of the sampling head 12 according to the adjustment of the sampling head 12.

[0042] When in use, when the sampling head 12 completes a sampling and flips upward with the transmission assembly 13, the horizontal guide rod 212 will gradually enter the inclined guide groove 214 on the back plate 213 with the movement of the sampling head 12. As the sampling head 12 continues to flip, the inclined guide groove 214 guides the horizontal guide rod 212, forcing the horizontal guide rod 212 to drive the push rod 211 to move along the inner cavity of the transmission shaft 144 towards the opening position of the sampling head 12. At this time, the compression spring 215 is compressed and stored.

[0043] As the push rod 211 moves forward, the scraper 20 connected to its front end slides synchronously in the inner cavity of the sampling head 12. Since the scraper 20 adopts a telescopic design that matches the back plate of the sampling head 12 and the inner cavity is equipped with a reset spring, it can adapt to the width of the inner cavity after the sampling head 12 is adjusted. Therefore, the scraper 20 can fit tightly against the inner wall of the sampling head 12 and completely push the residual coal slag after sampling out of the sampling head 12.

[0044] As the sampling head 12 continues to rotate and move downward within the inclined guide groove 214, the horizontal guide rod 212 will disengage from the inclined guide groove 214, the compression spring 215 will release its elastic force, pushing the push rod 211 and the horizontal guide rod 212 to reset, and the scraper 20 will also return to its initial position, preparing for the cleaning work after the next sampling, thereby avoiding the accumulation of residual coal slag in the inner cavity of the sampling head 12, and further ensuring the stable operation of the sampler.

[0045] Example 3, referring to Figures 1-12 This is the third embodiment of the present invention. Unlike the previous embodiment, based on embodiment 2, this embodiment provides an anti-blocking mechanism for the automatic sampler of coal transport in the furnace, which solves the problem that the coal block stuck in the inner cavity of the sampling head 12 cannot fall off. It includes a first limiting component 31, including a first retraction groove 311 opened on the side wall of the back plate 213. The inner cavity of the first retraction groove 311 is provided with a first reset spring 312. The first reset spring 312 is fixedly provided with a trapezoidal block 313 at one end of the opening of the first retraction groove 311. The trapezoidal block 313 abuts against the lower surface of the upper end of the inclined pressure plate 30 for limiting. The upper surface of the inclined pressure plate 30 is set as the lower inclined surface of the inner cavity of the inclined guide groove 214 and cooperates with the upper inclined surface of the inner cavity of the inclined guide groove 214 to guide the horizontal guide rod 212.

[0046] Specifically, the inclination angle of the inclined pressure plate 30 is consistent with the inclination angle of the inclined guide groove 214. The inclined pressure plate 30, through the first limiting component 31, enables the horizontal guide rod 212 to move normally within the inclined guide groove 214 when the sampling head 12 is not stuck with a coal block. When a coal block is stuck in the sampling head 12, the push rod 211 cannot properly push the scraper 20 to push the stuck coal block out of the sampling head 12. This pushes the inclined pressure plate 30 downward, causing the horizontal guide rod 212 to enter the lower end of the upper push plate 32 and reset under the action of the compression spring 215. Then, following the continuous rotation of the sampling head 12, it pushes the lower end face of the upper push plate 32 to abut and push upward, thereby causing the upper push plate 32 to abut against the movable column 331 and push the movable column 331 to move upward synchronously.

[0047] Furthermore, the second limiting component 33 includes a movable column 331 that abuts against the upper push plate 32. A first pull rope 332 is fixedly connected to the middle of the movable column 331, and a wedge block 333 is fixedly connected to the other end of the first pull rope 332. A second return spring 334 is fixedly provided on the back of the wedge block 333. The second limiting component 33 also includes a vertical sliding groove 335 opened on the back plate 213. The inner cavity of the vertical sliding groove 335 is slidably limited with the movable column 331. An arc-shaped rope groove 336 is provided at the lower end of the vertical sliding groove 335. The inner cavity of the arc-shaped rope groove 336 is slidably limited with the first pull rope 332. A second retraction groove 337 is provided at the lower end of the arc-shaped rope groove 336. The inner cavity of the second retraction groove 337 is slidably provided with the wedge block 333. Both the arc-shaped rope groove 336 and the second retraction groove 337 are opened on the back plate 213.

[0048] The guide assembly 34 includes an arc-shaped guide groove 341 formed on the back plate 213. The upper inner cavity of the arc-shaped guide groove 341 is connected to the inner cavity of the second retraction groove 337. A transverse rope groove 342 is provided at the lower end of the arc-shaped guide groove 341. An L-shaped hollow tube 343 is fixedly provided on the other end of the transverse rope groove 342. The inner cavity of the L-shaped hollow tube 343 and the inner cavity of the transverse rope groove 342 are both slidably limited by the second pull rope 36. The guide assembly 34 also includes a side protective cover 344 fixedly provided on the outside of the sampler 11. Two fixing seats 345 are provided in the inner cavity of the side protective cover 344. One fixing seat 345 is fixedly connected to the bottom surface of the inner cavity of the side protective cover 344 and rotatably connected to the second pull rope 36. The other fixing seat 345 is fixedly connected to the back of the hammer head of the hammer 37 and fixedly connected to the second pull rope 36.

[0049] It should be noted that the lower end of the inclined pressure plate 30 is provided with a spring for pushing the inclined pressure plate 30 upward to reset, so that the inclined pressure plate 30 can return to the state of being abutted and limited by the trapezoidal block 313. The retraction force of the trapezoidal block 313 is greater than the force of the horizontal guide rod 212 sliding normally in the inclined guide groove 214 and abutting against the inclined pressure plate 30. The L-shaped hollow tube 343 and the fixing seat 345 fixed to the bottom of the inner cavity of the side protective cover 344 can change the direction of the second pull rope 36, so that the second pull rope 36 can better pull the hammer 37. The rotating guide rod 35 is spring-loaded and its telescopic end can abut against the sampling head 12. When the sampling head 12 rotates, it can move to the upper end of the wedge block 333 and be limited by the wedge block 333. The upper push plate 32 is located on the lower end of one side of the wedge block 333 and has a small square that can abut against the telescopic guide rod 35. This ensures that the telescopic guide rod 35 is in a retracted state under normal conditions, thus avoiding wear or damage caused by the sampling head 12 abutting against the telescopic end of the telescopic guide rod 35 every time it rotates.

[0050] When in use, when the sampling head 12 is sampling normally and there is no coal blockage, the trapezoidal block 313 in the first limiting component 31 extends out of the first retraction groove 311 under the action of the first reset spring 312 and abuts against the lower end face of the inclined pressure plate 30 to limit it, so that the inclined pressure plate 30 maintains a stable angle and ensures that the horizontal guide rod 212 can slide normally along the inclined guide groove 214 to complete the cleaning action. At this time, the wedge block 333 of the second limiting component 33 extends out under the action of the second reset spring 334, and locks the telescopic guide rod 35 to keep it in a retracted state. The hammer 37 keeps a distance from the side of the sampling head 12 under the pull of the second pull rope 36, and the anti-blocking mechanism is in a standby state.

[0051] If a coal block gets stuck inside the sampling head 12, preventing the scraper 20 from advancing, the resistance of the horizontal guide rod 212 in the inclined guide groove 214 increases sharply. Its thrust on the inclined pressure plate 30 exceeds the limiting force of the trapezoidal block 313, forcing the trapezoidal block 313 to compress the first return spring 312 and retract into the first retraction groove 311. The inclined pressure plate 30 then moves downward. At this time, the horizontal guide rod 212 leaves its original trajectory and enters the lower end of the upper push plate 32. As the sampling head 12 rotates, it pushes the upper push plate 32 upward. The upper push plate 32 then pushes the movable column 331 upward along the vertical sliding groove 335. The movable column 331 pulls the wedge block 333 through the first pull rope 332 to compress the second return spring 334 and retract, releasing the limitation on the telescopic guide rod 35. The telescopic guide rod 35 extends under the action of its own spring, and the extension length can abut against the side wall of the sampling head 12.

[0052] When the telescopic guide rod 35 is released from its limit, the tension of the second pull rope 36 is released, and the torsion spring releases its elasticity instantly, causing the hammer 37 to quickly rotate and forcefully strike the sides of the sampling head 12, using vibration to shake off the stuck coal blocks.

[0053] As the sampling head 12 continues to rotate, its sidewall abuts against the telescopic end of the telescopic guide rod 35 and pushes the telescopic guide rod 35 to slide along the arc-shaped guide groove 341 of the guide assembly 34. The end of the telescopic guide rod 35 abuts against the small square on the side of the upper push plate 32 and then gets stuck on the upper end of the wedge block 333. When the telescopic guide rod 35 moves, it will transmit the pulling force through the arc-shaped rope groove 336, the transverse rope groove 342 and the L-shaped hollow tube 343 to the second pull rope 36, so that the second pull rope 36 pulls the hammer 37 to rotate around the movable seat 38 under the guidance of the fixed seat 345, thereby making the movable seat 38 reset and prepare for the next hammering.

[0054] After the blockage is cleared, the sampling head 12 continues to operate, the horizontal guide rod 212 separates from the upper push plate 32, the inclined pressure plate 30 rises under the action of the lower end reset spring, and the trapezoidal block 313 extends out to the limit again; the movable column 331 falls to loosen the first pull rope 332, the wedge block 333 resets and locks the telescopic guide rod 35, and the hammer 37 also returns to its initial position under the action of the torsion spring. The entire anti-blockage mechanism returns to standby state, waiting for the next possible blockage trigger.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic sampler for coal transport in furnaces, characterized in that: include, The adjustment assembly includes a transmission belt (10) and a sampler (11). The sampler (11) is provided with a sampling head (12) at its upper end. The sampling head (12) is telescopic. The back of the sampling head (12) is provided with a transmission assembly (13) for driving the sampling head (12) to circulate and sample, and an opening and closing assembly (14) for adjusting the size of the sampling opening of the sampling head (12). The cleaning mechanism includes a scraper (20) disposed in the inner cavity of the sampling head (12), and a telescopic component (21) is provided on the back of the scraper (20). The telescopic component (21) is used to push the scraper (20) to clean the residual coal slag in the inner cavity of the sampling head (12). The anti-blocking mechanism includes an inclined pressure plate (30), a first limiting component (31) is provided at the lower end of the inclined pressure plate (30), an upper push plate (32) is provided on one side of the lower end of the inclined pressure plate (30), a second limiting component (33) is provided on the upper part of the upper push plate (32), a guide component (34) is provided at the lower end of the second limiting component (33), a telescopic guide rod (35) and a second pull rope (36) are slidably provided in the guide component (34), a hammer (37) is fixedly connected to the other end of the second pull rope (36), a movable seat (38) is rotatably provided at the lower end of the hammer (37), and the movable seat (38) is fixedly connected to the sampler (11).

2. The automatic coal sampler for coal transport in furnaces as described in claim 1, characterized in that: The transmission assembly (13) includes an outer sleeve (131) fixedly disposed in the middle of the back of the sampling head (12), and a motor (132) is fixedly connected to the middle of the end of the outer sleeve (131) away from the sampling head (12).

3. The automatic coal sampler for coal transport in furnaces as described in claim 2, characterized in that: The opening and closing assembly (14) includes a square groove (141) formed in the middle of the two telescopic ends on the back of the sampling head (12). A rack (142) is fixedly installed in the inner cavity of each of the two square grooves (141). A gear (143) meshes between the two racks (142). A drive shaft (144) is fixedly installed in the middle of the gear (143). The drive shaft (144) is inserted into the middle of the outer sleeve rod (131). A knob (145) is fixedly installed on the other end of the drive shaft (144). A ratchet (146) is fixedly installed on one side of the sampling head (12) of the knob (145). A pawl (147) is engaged on the teeth of the ratchet (146). The pawl (147) is rotatably installed on the outer side of the back surface of the outer sleeve rod (131).

4. The automatic coal sampler for coal transport in furnaces as described in claim 1, characterized in that: The telescopic assembly (21) includes a push rod (211) fixedly disposed on the back of the scraper (20). The push rod (211) is inserted into the inner cavity of the transmission shaft (144). The push rod (211) is located at one end of the scraper (20) and movably passes through the back baffle of the sampling head (12), and the other end is fixedly disposed with a horizontal guide rod (212).

5. The automatic coal sampler for coal transport in furnaces as described in claim 4, characterized in that: The telescopic assembly (21) also includes a back plate (213) fixedly installed on the upper inner wall of the sampler (11). An inclined guide groove (214) is provided on the upper part of one side wall of the back plate (213). The inclined guide groove (214) is used to guide the horizontal guide rod (212) and to push the push rod (211) to push the scraper (20) to push out the coal slag remaining in the inner cavity of the sampling head (12). A compression spring (215) is sleeved on the outside of one end of the push rod (211) in the inner cavity of the drive shaft (144). The compression spring (215) is used to reset after the push rod (211) drives the sampling head (12) to push out the coal slag.

6. The automatic coal sampler for transporting coal into the furnace as described in claim 1, characterized in that: The first limiting component (31) includes a first retraction groove (311) opened on the side wall of the back plate (213). The inner cavity of the first retraction groove (311) is provided with a first reset spring (312). The first reset spring (312) is fixedly provided with a trapezoidal block (313) at one end of the opening of the first retraction groove (311). The trapezoidal block (313) abuts against the lower surface of the upper end of the inclined pressure plate (30) for limiting. The upper surface of the inclined pressure plate (30) is set as the lower inclined surface of the inner cavity of the inclined guide groove (214) and cooperates with the upper inclined surface of the inner cavity of the inclined guide groove (214) to guide the horizontal guide rod (212).

7. The automatic coal sampler for coal transport in furnaces as described in claim 1, characterized in that: The second limiting component (33) includes a movable column (331) that abuts against the upper push plate (32). A first pull rope (332) is fixedly connected to the middle of the movable column (331). A wedge block (333) is fixedly connected to the other end of the first pull rope (332). A second return spring (334) is fixedly provided on the back of the wedge block (333).

8. The automatic coal sampler for coal transport in furnaces as described in claim 7, characterized in that: The second limiting component (33) also includes a vertical sliding groove (335) opened on the back plate (213). The inner cavity of the vertical sliding groove (335) is slidably limited to the movable column (331). An arc-shaped rope groove (336) is provided at the lower end of the vertical sliding groove (335). The inner cavity of the arc-shaped rope groove (336) is slidably limited to the first pull rope (332). A second retraction groove (337) is provided at the lower end of the arc-shaped rope groove (336). The inner cavity of the second retraction groove (337) is slidably connected to the wedge block (333). Both the arc-shaped rope groove (336) and the second retraction groove (337) are opened on the back plate (213).

9. The automatic coal sampler for coal transport in furnaces as described in claim 1, characterized in that: The guide assembly (34) includes an arc-shaped guide groove (341) opened on the back plate (213). The inner cavity of the upper end of the arc-shaped guide groove (341) is connected to the inner cavity of the second retraction groove (337). A transverse rope groove (342) is provided at the lower end of the arc-shaped guide groove (341). An L-shaped hollow tube (343) is fixedly provided on the other end of the transverse rope groove (342). The inner cavity of the L-shaped hollow tube (343) and the inner cavity of the transverse rope groove (342) are both provided with a second pull rope (36) for sliding limit.

10. The automatic coal sampler for coal transport in furnaces as described in claim 9, characterized in that: The guide assembly (34) also includes a side protective cover (344) fixedly installed on the outside of the sampler (11). The inner cavity of the side protective cover (344) is provided with two fixing seats (345). One fixing seat (345) is fixedly connected to the bottom surface of the inner cavity of the side protective cover (344) and rotatably connected to the second pull rope (36). The other fixing seat (345) is fixedly connected to the back of the hammer head of the hammer (37) and fixedly connected to the second pull rope (36).

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