Ash conveying equipment

Abstract

According to the ash conveying equipment, a pulling rope is used for pulling an ash scraping trolley to move back and forth in a reciprocating mode to scrape ash, compared with embedded scraper conveying equipment which scrapes ash through one-way rotation of a scraper chain, the structure is simpler, the chain breaking problem is avoided, the requirement for installation precision is reduced, and even if the installation precision is low, the ash conveying equipment can be used for conveying ash. And the serious vibration problem cannot be caused. And moreover, the ash scraping trolley is in rolling friction with the bottom plate of the machine shell when moving, so that the problems of serious abrasion, high operation energy consumption, large noise, obvious vibration and the like caused by sliding friction are avoided. Therefore, the service life is longer, the operation energy consumption is lower, the operation is quieter, and the operation safety is higher.

Description

Technical Field

[0001] The present application relates to the technical field of dust conveying, and in particular to a dust conveying device. Background Art

[0002] Most steel mills use buried scraper conveying equipment to convey dust from sintering machine head electrostatic precipitators. The main components of buried scraper conveying equipment include drive device, tail device, casing, scraper chain, wear-resistant guide rail, and wear-resistant guide rail bracket. The scraper chain includes a die-forged chain and scrapers symmetrically arranged on both sides of the die-forged chain. Each scraper chain is strung together into a complete scraper chain through a pin shaft. The upper chain of the scraper chain is supported by the wear-resistant guide rail bracket, and the lower chain is supported on the wear-resistant guide rail on the bottom plate of the casing.

[0003] The scraper chain has a complex structure and is heavy. During operation, the scraper chain directly contacts and rubs against the wear-resistant guide rail and the wear-resistant guide rail bracket, which easily causes noise and vibration problems, resulting in a shorter service life of the equipment. During operation, the scraper chain performs unidirectional rotation, which requires high installation accuracy for the entire equipment. If the installation error is large, the vibration problem will be more obvious.

[0004] In addition, during operation, the scraper chain slides and rubs against the wear-resistant guide rail and the wear-resistant guide rail bracket. This friction needs to be overcome during operation, resulting in high energy consumption. Moreover, the sliding friction causes the scraper chain to wear more. After a period of use, the chain is prone to breakage. When the chain breaks, the pins and other connectors connecting the two scraper chains are prone to fly and fall into the downstream equipment, causing accidents to the operation of the downstream equipment and resulting in low operating safety.

[0005] In summary, the existing buried scraper conveying equipment has many shortcomings, and how to improve it is a technical problem that needs to be solved by technical personnel in this field. Summary of the invention

[0006] To solve the above problems, the present application provides an ash conveying equipment, which includes a casing, an ash scraping trolley, a traction device, a tensioning device, a front traction rope and a rear traction rope, wherein the top side of the casing is provided with an ash receiving port that is connected to the lower ash port of the ash hopper, and the bottom side of the casing is provided with an ash dropping port, the ash scraping trolley is located in the casing, the ash scraping trolley includes a frame and a traveling wheel, the traveling wheel is rotatably connected to the frame and supported on the bottom plate of the casing, the traction device and the tensioning device, one is fixed to the front end of the casing, and the other is fixed to the rear end of the casing, the traction device includes a power element, a first driving roller and a second driving roller, the tensioning device includes a tensioning roller, the front traction rope and the rear traction rope are respectively connected to the front and rear ends of the ash scraping trolley, the free end of the front traction rope is wound around the first driving roller, and the free end of the rear traction rope is turned back and wound around the tensioning roller and then wound around the second driving roller, and the power element can drive the first driving roller and the second driving roller to rotate to drive the ash scraping trolley to move forward and backward.

[0007] An embodiment of the ash conveying equipment, the scraper trolley includes a scraper and a pull rod assembly, the pull rod assembly includes a pull rod, a push piece, a pull rod limiting sleeve and a pull rod limiting plate, the pull rod can be slidably connected to the frame forward and backward, the scraper can be flipped up and down connected to the frame, the push piece is fixed on the pull rod, the front traction rope and the rear traction rope are respectively connected to the front and rear ends of the pull rod, when the pull rod slides forward and backward relative to the frame, it can drive the push piece to push the scraper to flip up and down, the pull rod limiting sleeve is fixed on the frame, the inner hole of the pull rod limiting sleeve is a non-circular hole, the pull rod limiting sleeve is sleeved on the outer periphery of the non-circular cross-section of the pull rod through the non-circular hole to limit the rotation of the pull rod relative to the frame, the pull rod limiting plate is fixed on the pull rod, when the pull rod slides forward and backward to the limit position, the pull rod limiting plate contacts the pull rod limiting sleeve to push the scraper trolley to move forward and backward as a whole.

[0008] An embodiment of the ash conveying equipment, the ash scraping trolley includes an ash scraping assembly, the ash scraping assembly includes a bottom ash scraping piece, a pre-compressed ash scraping spring and an ash scraping thread adjustment piece for adjusting the compression degree of the ash scraping spring, the bottom ash scraping piece can float up and down relative to the frame, the bottom surface of the bottom ash scraping piece fits into the area on the bottom plate where the traveling wheels pass, and the ash scraping spring can give the bottom ash scraping piece an elastic force toward the bottom plate.

[0009] An embodiment of the ash conveying equipment, the ash scraping trolley includes a guide assembly, the guide assembly is arranged on the left and right sides of the ash scraping trolley, the guide assembly includes a guide wheel, a guide swing arm, a pre-compressed guide spring and a guide thread adjustment member for adjusting the compression degree of the guide spring, the guide wheel is rotatably connected to the guide swing arm, the outer peripheral surface of the guide wheel is in contact with the side plate of the casing on the same side, the guide swing arm is connected to the frame so as to swing left and right, and the guide spring can give the guide swing arm an elastic force toward the side plate on the same side.

[0010] An embodiment of the ash conveying equipment, the ash scraping trolley includes a side ash scraping piece, the side surface of the side ash scraping piece is in contact with the side plate on the same side, the side ash scraping piece is connected to the frame so as to be able to swing left and right, the side ash scraping piece is connected to the guide swing arm on the same side, and when the guide swing arm swings left and right relative to the frame, it can drive the side ash scraping piece on the same side to swing left and right relative to the frame.

[0011] An embodiment of the ash conveying equipment, the tensioning device includes a tensioning shell, a tensioning swing arm, a pre-compressed tensioning spring, a tensioning spring seat and a tensioning threaded adjusting piece, the tensioning swing arm is connected to the tensioning shell so as to be able to swing back and forth, the tensioning wheel is rotatably connected to the tensioning swing arm, the tensioning spring can give the tensioning spring seat an elastic force toward the tensioning swing arm, so that the tensioning spring seat can push the tensioning swing arm under the action of the elastic force to drive the tensioning wheel to swing in a direction away from the traction device, and the tensioning threaded adjusting piece is threadedly connected to the tensioning spring seat, and can drive the tensioning spring seat to move in a direction close to or away from the tensioning swing arm by screwing the tensioning threaded adjusting piece.

[0012] An embodiment of the ash conveying equipment, the ash conveying machine includes an electronic control device and a limit device, the limit device includes a limit switch, the electronic control device is communicatively connected with the limit switch and the power element, the limit device is located between the traction device and the tensioning device, and the limit device is respectively arranged at the front and rear of the ash scraping trolley, and the limit switch of the limit device can be disconnected when the ash scraping trolley moves forward or backward to conflict with the limit device, and the electronic control device stops driving the ash scraping trolley after receiving the disconnection signal of the limit switch of the limit device, and the electronic control device presets a pause time, and the electronic control device controls the power element to reversely drive the ash scraping trolley after the preset pause time after controlling the power element to stop driving the ash scraping trolley.

[0013] An embodiment of the ash conveying equipment, the traction device includes a traction shell and a photoelectric sensor, the rotating shaft of the first drive roller and the rotating shaft of the second drive roller are rotatably connected to the traction shell, the encoding disk of the photoelectric sensor is fixed on the rotating shaft of the first drive roller or the rotating shaft of the second drive roller, the photoelectric element of the photoelectric sensor is fixed on the traction shell, the electronic control device is communicatively connected with the photoelectric sensor, and the electronic control device can calculate the moving speed and position of the scraping trolley according to the pulse signal collected by the photoelectric sensor.

[0014] In one embodiment of the ash conveying equipment, both ends of the roller shaft of the first driving roller and both ends of the roller shaft of the second driving roller are provided with annular baffles, and the annular baffles are formed by connecting two arc-shaped baffles, and the arc-shaped baffles are respectively locked on the end threaded holes of the roller barrels of the corresponding driving rollers through threaded fasteners.

[0015] An embodiment of the ash conveying equipment, the limit device includes a limit shell, a rotating shaft, a rocker arm, a paddle and a counterweight block, the rotating shaft is rotatably connected to the limit shell, the paddle is fixed on the rotating shaft, the limit switch is fixed on the limit shell, the rocker arm is sleeved on the outer periphery of the rotating shaft, one end of the rocker arm extends into the casing, when the ash scraping trolley moves forward or backward to the extreme position, it resists the swing of the rocker arm, so that the rocker arm drives the rotating shaft to rotate, and then the rotating shaft drives the paddle to touch the limit switch, so that the limit switch is disconnected, and the counterweight block is fixed on the rocker arm to use its own gravity to drive the rocker arm to reset.

[0016] The ash conveying equipment provided by the present application relies on a traction rope to pull the scraper trolley to move back and forth to scrape the ash. Compared with the buried scraper conveying equipment that relies on the unidirectional rotation of the scraper chain to scrape the ash, the structure is simpler, the chain breakage problem is avoided, and the requirements for installation accuracy are reduced. Even if the installation accuracy is lower, it will not cause serious vibration problems. In addition, when the scraper trolley moves, there is rolling friction between it and the bottom plate of the casing, which avoids the problems of severe wear, high operating energy consumption, loud noise, and obvious vibration caused by sliding friction. Therefore, it has a longer service life, lower operating energy consumption, quieter operation, and higher operating safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic plan view of an embodiment of the ash conveying equipment provided in the present application;

[0018] Figure 2 for Figure 1 A three-dimensional view of the medium-sized plaster scraping trolley;

[0019] Figure 3 for Figure 2 A cross-sectional view of

[0020] Figure 4 for Figure 2 An enlarged view of the position of a set of shovel assemblies;

[0021] Figure 5 for Figure 4 A cross-sectional view of

[0022] Figure 6 for Figure 2 A plan view of the location of a set of guide components;

[0023] Figure 7 for Figure 1 A perspective view of the middle traction device;

[0024] Figure 8 for Figure 7 A cross-sectional view of

[0025] Fig. 9 for Figure 8 An enlarged view of a roller of a driving roller and an annular baffle at both ends thereof;

[0026] Fig.10 is a plan view of the annular baffle;

[0027] Fig.11 for Figure 1 A perspective view of the middle tensioner;

[0028] Fig.12 for Fig.11 A cross-sectional view of

[0029] Fig.13 for Figure 1 A three-dimensional diagram of the middle limit device;

[0030] Fig.14 for Fig.13 sectional view of .

[0031] The following are the descriptions of the reference numerals:

[0032] The plaster scraping trolley 1, the frame 11, the connecting shaft 11a, the traveling wheel 12, the scraper 13, the dial shaft 14, the pull rod assembly 15, the pull rod 151, the convex ridge 151a, the hanging plate 152, the push member 153, the pull rod limiting sleeve 154, the pull rod limiting plate 155, the ash scraping assembly 16, the bottom ash scraping member 161, the fixed seat 162, the floating seat 163, the floating support arm 163a, the ash scraping spring 164, the ash scraping thread adjusting member 165, the guide assembly 17, the guide wheel 171, the guide swing arm 172, the first articulated seat 173, the guide spring 174, the spring support rod 175, the guide thread adjusting member 176, the side ash scraping member 18, the second articulated seat 19, and the connecting rod 110;

[0033] Traction device 2, first driving roller 21, second driving roller 22, roller 2a, roller shaft 2b, annular baffle 2c, arc baffle 2d, encoder disc 23, traction housing 24, power element 25;

[0034] Tensioning device 3, tensioning wheel 31, tensioning housing 32, tensioning swing arm 33, tensioning spring seat 34, spring support 34a, spring pressure plate 34b, tensioning spring 35, anti-rotation rod 36, support plate 37, tensioning end cover 38, tensioning threaded adjustment member 39, roller 310;

[0035] Casing 4; front traction rope 5; rear traction rope 6;

[0036] Limit device 7, limit switch 71, limit housing 72, rotating shaft 73, swing rod 74, paddle 75, counterweight 76, sealing end cover 77;

[0037] Ash hopper 8. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution of the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] like Figure 1 As shown, the ash conveying equipment provided by the present application at least includes a casing 4, an ash scraping trolley 1, a traction device 2, a tensioning device 3, a front traction rope 5 and a rear traction rope 6.

[0040] An ash receiving port is provided on the top side of the casing 4, and an ash dropping port is provided on the bottom side of the casing 4. The ash receiving port is connected to the lower ash port of the ash hopper 8, and the ash in the ash hopper 8 directly falls into the casing 4 through the ash receiving port, and then is scraped to the ash dropping port by the ash scraping trolley 1, and falls from the ash dropping port. In the illustrated embodiment, the ash dropping port is set at a position close to the front end of the casing 4, and the ash receiving port is further back than the ash dropping port. Specifically, the installation height of the casing 4 can be set higher. The higher the height of the casing 4, the smaller the height dimension of the ash hopper 8. Under the premise that the inclination angle of the ash hopper 8 remains unchanged, the larger the diameter of the lower ash port of the ash hopper 8, the less likely the ash hopper 8 will be blocked.

[0041] The scraping trolley 1 is located in the housing 4. Figure 2 As shown, the plaster scraping trolley 1 includes a frame 11 and running wheels 12. The running wheels 12 are rotatably connected to the frame 11 and supported on the bottom plate of the casing 4. The plaster scraping trolley 1 can move back and forth in the casing 4. When the plaster scraping trolley 1 moves back and forth, the running wheels 12 roll and rub against the casing 4.

[0042] The traction device 2 and the tension device 3 are arranged at the front end of the housing 4 and the rear end of the housing 4, respectively. In the illustrated embodiment, the traction device 2 is arranged at the front end of the housing 4 and the tension device 3 is arranged at the rear end of the housing 4, but the positions of the two can also be reversed.

[0043] like Figure 7 and Figure 8 As shown, the traction device 2 at least includes a power element 25, a first driving roller 21 and a second driving roller 22, and the power element 25 can drive the first driving roller 21 and the second driving roller 22 to rotate. In the illustrated embodiment, the power element 25 is a motor, and the output shaft of the motor is connected to the roller shaft 2b of the first driving roller 21 through a chain transmission structure, and the roller shaft 2b of the first driving roller 21 is connected to the roller shaft 2b of the second driving roller 22 through a chain transmission structure. When the output shaft of the motor drives the roller shaft 2b of the first driving roller 21 to rotate, the roller 2a of the first driving roller 21, the roller shaft 2b of the second driving roller 22 and the roller 2a rotate together.

[0044] like Fig.11 and Fig.12 As shown, the tensioning device 3 comprises at least a tensioning roller. Figure 1 As shown, the front traction rope 5 and the rear traction rope 6 are respectively connected to the front and rear ends of the plaster scraping trolley 1, the free end of the front traction rope 5 is wound around the first driving roller 21, and the free end of the rear traction rope 6 is turned around the tensioning roller and then wound around the second driving roller 22. The tensioning roller is responsible for tensioning the rear traction rope 6. If the first driving roller 21 and the second driving roller 22 rotate in the same direction under the drive of the power element 25, the free end of the front traction rope 5 and the free end of the rear traction rope 6 are respectively wound around the first driving roller 21 and the second driving roller 22 in opposite directions to ensure that when the first driving roller 21 and the second driving roller 22 rotate in the same direction, the front traction rope 5 and the rear traction rope 6 are retracted and released respectively. If the first driving roller 21 and the second driving roller 22 rotate in opposite directions driven by the power element 25, the free ends of the front traction rope 5 and the rear traction rope 6 are respectively wound around the first driving roller 21 and the second driving roller 22 in the same direction to ensure that when the first driving roller 21 and the second driving roller 22 rotate in opposite directions, the front traction rope 5 and the rear traction rope 6 are one retracted and the other released.

[0045] When the above-mentioned ash conveying equipment is in operation, the power element 25 runs forward, driving the first driving roller 21 and the second driving roller 22 to rotate, so that the first driving roller 21 retracts the front traction rope 5 and the second driving roller 22 releases the rear traction rope 6, thereby driving the ash scraping trolley 1 to move forward and scrape the ash to the ash drop outlet. The power element 25 runs reversely, driving the first driving roller 21 and the second driving roller 22 to rotate, so that the first driving roller 21 releases the front traction rope 5 and the second driving roller 22 retracts the rear traction rope 6, thereby driving the ash scraping trolley 1 to move backward and return to its original position. After returning to the appropriate position, the power element 25 runs forward again, so that the ash scraping trolley 1 moves back and forth.

[0046] The above-mentioned ash conveying equipment relies on a traction rope to pull the ash scraping trolley 1 back and forth to scrape the ash. Compared with the buried scraper conveying equipment that relies on the unidirectional rotation of the scraper chain to scrape the ash, the structure is simpler, the chain breakage problem is avoided, and the requirements for installation accuracy are reduced. Even if the installation accuracy is lower, it will not cause serious vibration problems. In addition, when the ash scraping trolley 1 moves, there is rolling friction between it and the bottom plate of the casing 4, which avoids the problems of severe wear, high operating energy consumption, loud noise, and obvious vibration caused by sliding friction. Therefore, it has a longer service life, lower operating energy consumption, quieter operation, and higher operating safety.

[0047] In some embodiments, such as Figure 2 and Figure 3As shown, the plaster scraping trolley 1 includes a scraper 13 and a rod assembly 15, and the rod assembly 15 includes a rod 151, a push piece 153, a rod limit sleeve 154 and a rod limit plate 155. The rod 151 is connected to the frame 11 in a manner that it can slide forward and backward. The scraper 13 is connected to the frame 11 in a manner that it can flip up and down. The push piece 153 is fixed to the rod 151. The front traction rope 5 and the rear traction rope 6 are respectively connected to the front and rear ends of the rod 151. When the rod 151 slides forward and backward relative to the frame 11, it can drive the push piece 153 to push the scraper 13 to flip up and down. The rod limit sleeve 154 is fixed to the frame 11. The inner hole of the rod limit sleeve 154 is a non-circular hole, and the rod limit sleeve 154 is sleeved on the non-circular cross-section outer periphery of the rod 151 through the non-circular hole, and the non-circular hole and the non-circular cross-section outer periphery cooperate to limit the rotation of the rod 151 relative to the frame 11. The pull rod limit plate 155 is fixed on the pull rod 151. When the pull rod 151 slides forward and backward to the limit position, the pull rod limit plate 155 contacts the pull rod limit sleeve 154 to push the plaster scraping trolley 1 to move forward and backward as a whole. Specifically, in the illustrated embodiment, hanging plates 152 are fixed to the front and rear ends of the pull rod 151, and the front traction rope 5 and the rear traction rope 6 are respectively connected to the hanging plates 152 at the front and rear ends. The plaster scraping trolley 1 is provided with two scrapers 13, which are arranged at intervals in front and back and can be respectively turned upside down and sleeved on the outer periphery of the two connecting shafts 11a of the frame 11. Two box-shaped push members 153 are fixed on the pull rod 151, and the two scrapers 13 are connected to the pull shafts 14. The upper ends of the pull shafts 14 of the two scrapers 13 extend into the two box-shaped push members 153 respectively. When the pull rod 151 slides forward relative to the frame 11, it drives the two box-shaped push members 153 to push the two scrapers 13 to flip downward, so that the gap between the two scrapers 13 and the bottom plate of the housing 4 is reduced. In this way, when the scraping trolley 1 moves forward as a whole, the scraper 13 can effectively scrape the ash. When the pull rod 151 slides backward relative to the frame 11, it drives the two box-shaped push members 153 to push the two scrapers 13 to flip upward, so that the gap between the two scrapers 13 and the bottom plate of the housing 4 is increased. In this way, when the scraping trolley 1 moves backward as a whole, it can prevent the scraper 13 from scraping the ash to a position away from the ash drop port. The outer periphery of the position where the pull rod 151 is sleeved with the pull rod limiting sleeve 154 is provided with a convex ridge 151a, and the inner hole of the pull rod limiting sleeve 154 is provided with a groove. The convex ridge 151a and the groove cooperate to limit the rotation of the pull rod 151. Two pull rod limiting sleeves 154 are sleeved on the pull rod 151 and two pull rod limiting plates 155 are fixed. When the rod 151 slides forward to the limit position relative to the frame 11, one rod limit plate 155 contacts one end of one rod limit sleeve 154 to push the scraper trolley 1 forward as a whole, and at this time, the gap between the two scrapers 13 and the bottom plate of the housing 4 is the smallest. When the rod 151 slides backward to the limit position relative to the frame 11, another rod limit plate 155 contacts one end of another rod limit sleeve 154 to push the scraper trolley 1 backward as a whole, and at this time, the gap between the two scrapers 13 and the bottom plate of the housing 4 is the largest.

[0048] In some embodiments, such as Figure 4 and Figure 5 As shown, the scraping trolley 1 includes a scraping assembly 16. The scraping assembly 16 includes a bottom scraping piece 161, a pre-compressed scraping spring 164, and a scraping threaded adjustment piece 165 for adjusting the compression degree of the scraping spring 164. The bottom scraping piece 161 can float up and down relative to the frame 11. The scraping spring 164 can give the bottom scraping piece 161 an elastic force toward the bottom plate. Under the elastic force of the scraping spring 164, the bottom surface of the bottom scraping piece 161 fits with the area on the bottom plate of the casing 4 where the traveling wheel 12 passes. When the scraping trolley 1 moves forward and backward, the dust on the area on the bottom plate of the casing 4 where the traveling wheel 12 passes is compacted by the traveling wheel 12, and the bottom scraping piece 161 scoops up the compacted dust to solve the problem that the dust adheres to the bottom plate of the casing 4 and is not easily scraped away by the scraper 13. Specifically, in the illustrated embodiment, two groups of ash scraping assemblies 16 are respectively provided at the front and rear ends of the ash scraping trolley 1, and the bottom ash scraping piece 161 is a triangular block, which is fixed to the floating seat 163 by threaded fasteners, and a fixed seat 162 is fixed on the frame 11. The floating seat 163 can be connected to the fixed seat 162 by threaded fasteners in a floating manner up and down, and the ash scraping thread adjustment piece 165 is threadedly connected to the fixed seat 162, and the floating seat 163 has a floating support arm 163a, which extends below the ash scraping spring 164, and the ash scraping spring 164 is compressed between the ash scraping thread adjustment piece 165 and the floating support arm 163a. ​​The compression degree of the ash scraping spring 164 is adjusted by screwing the ash scraping thread adjustment piece 165 to ensure that the bottom surface of the bottom ash scraping piece 161 can fit the area on the bottom plate of the casing 4 through which the traveling wheels 12 pass with appropriate force.

[0049] In some embodiments, such as Figure 2 As shown, the plaster scraping trolley 1 includes a guide assembly 17, and the guide assembly 17 is arranged on both the left and right sides of the plaster scraping trolley 1. Figure 6As shown, the guide assembly 17 includes a guide wheel 171, a guide swing arm 172, a pre-compressed guide spring 174, and a guide thread adjustment member 176 for adjusting the compression degree of the guide spring 174. The guide wheel 171 is rotatably connected to the guide swing arm 172. The guide swing arm 172 is connected to the frame 11 so as to swing left and right. The guide spring 174 can give the guide swing arm 172 an elastic force toward the side plate of the housing 4 on the same side. Under the elastic force of the guide spring 174, the outer peripheral surface of the guide wheel 171 contacts the side plate of the housing 4 on the same side, guiding the plastering trolley 1 to move, avoiding the problem of the plastering trolley 1 yaw caused by the straightness deviation of the housing 4, and ensuring that the plastering trolley 1 travels smoothly along the traction direction of the traction rope. Specifically, in the illustrated embodiment, two sets of guide assemblies 17 are respectively provided on the left and right sides of the scraping trolley 1, a first hinge seat 173 and a spring support rod 175 are fixed on the frame 11, one end of the guide swing arm 172 is hinged on the first hinge seat 173, the guide wheel 171 is hinged on the other end of the guide swing arm 172, one end of the spring support rod 175 is fixed to the frame 11, the other end of the spring support rod 175 passes through the long hole on the guide swing arm 172 and extends to the side of the guide swing arm 172 away from the frame 11, and is threadedly connected to the guide thread adjusting member 176, the guide spring 174 is compressed between the guide thread adjusting member 176 and the guide swing arm 172, and the compression degree of the guide spring 174 is adjusted by screwing the guide thread adjusting member 176 to ensure that the outer peripheral surface of the guide wheel 171 is in contact with the side plate of the casing 4.

[0050] In some embodiments, such as Figure 2 As shown, the plaster scraping trolley 1 includes a side plaster scraping member 18, and the side plaster scraping member 18 is provided on both the left and right sides of the plaster scraping trolley 1. Figure 6 As shown, the side ash scraping piece 18 is connected to the frame 11 so as to be swingable left and right. The side surface of the side ash scraping piece 18 is in contact with the side plate of the casing 4 on the same side. The side ash scraping piece 18 can scrape away the ash on the side plate of the casing 4 when the ash scraping trolley 1 moves forward and backward. The side ash scraping piece 18 is connected to the guide swing arm 172 on the same side, and the guide swing arm 172 drives the side ash scraping piece 18 on the same side to swing left and right relative to the frame 11 when the guide swing arm 172 swings left and right relative to the frame 11. In this way, when the guide wheel 171 presses against an obstacle on the side plate, the guide swing arm 172 drives the side ash scraping piece 18 on the same side to swing away from the side plate, so as to prevent the side ash scraping piece 18 from being stuck by the obstacle on the side plate. Specifically, in the illustrated embodiment, the side scraper 18 is a plate-like structure, which is connected to the frame 11 by a hinge. A second hinge seat 19 is fixed to the side scraper 18, one end of the connecting rod 110 is hinged to the second hinge seat 19, and the other end of the connecting rod 110 is hinged to a position between the two ends of the guide swing arm 172, so that the side scraper 18 is connected to the guide swing arm 172 through the connecting rod 110.

[0051] In some embodiments, such as Fig.11 and Fig.12 As shown, the tensioning device 3 includes a tensioning housing 32, a tensioning swing arm 33, a pre-compressed tensioning spring 35, a tensioning spring seat 34 and a tensioning threaded adjusting member 39. The tensioning housing 32 is sealed and fixed to one end of the housing 4. The tensioning swing arm 33 is connected to the tensioning housing 32 so as to be able to swing back and forth. The tensioning wheel 31 is rotatably connected to the tensioning swing arm 33. The tensioning spring 35 can give the tensioning spring seat 34 an elastic force toward the tensioning swing arm 33, so that the tensioning spring seat 34 pushes the tensioning swing arm 33 to drive the tensioning wheel 31 to swing away from the traction device 2, thereby ensuring that the traction rope 6 is tensioned after the tensioning wheel 31 is tensioned. The tensioning threaded adjustment piece 39 is threadably connected to the tensioning spring seat 34, and can drive the tensioning spring seat 34 to move toward or away from the tensioning swing arm 33 by screwing the tensioning threaded adjustment piece 39. When the rear traction rope 6 is wound, the tensioning spring seat 34 is moved away from the tensioning swing arm 33, so that the tensioning swing arm 33 and the tensioning wheel 31 are in a relaxed position. When the free end of the rear traction rope 6 is wound around the second driving roller 22 of the traction device 2, the tensioning spring seat 34 is moved close to the tensioning swing arm 33, so that the tensioning spring seat 34 pushes the tensioning swing arm 33 under the action of the elastic force of the tensioning spring 35, driving the tensioning wheel 31 to move in the direction away from the traction device 2, thereby causing the tensioning wheel 31 to tension the rear traction rope 6. Specifically, in the illustrated embodiment, a tensioning end cover 38 is fixed to the tensioning housing 32, and the tensioning spring seat 34 includes a spring pillar 34a and a spring pressure plate 34b connected to the lower end of the spring pillar 34a and located in the tensioning housing 32. The upper end of the spring pillar 34a passes through the tensioning end cover 38 and extends outside the tensioning housing 32, and is threadedly connected to the tensioning threaded adjustment member 39. The tensioning spring 35 is compressed between the spring pressure plate 34b and the tensioning end cover 38. Screwing the tensioning threaded adjustment member 39 can drive the tensioning spring seat 34 to move upward away from the tensioning swing arm 33 or move downward close to the tensioning swing arm 33. A roller 310 is rotatably connected below the spring pressure plate 34b of the tensioning spring seat 34, and contacts the tensioning swing arm 33 through the roller 310 to reduce contact friction. Two support plates 37 are fixed above the tensioning housing 32, and a stop rod 36 is inserted into the upper end of the spring support 34a. The two ends of the stop rod 36 extend into the stop grooves of the two support plates 37, which can ensure that the roller 310 installed on the spring support 34a rolls along a straight line without deviation when it collides with the tensioning swing arm 33, and ensure that the tensioning spring seat 34 does not rotate when the tensioning threaded adjustment piece 39 is screwed.

[0052] In some embodiments, such as Figure 1As shown, the ash conveying equipment includes an electric control device (not shown in the figure) and a limit device 7. The limit device 7 includes a limit switch 71, and the electric control device is in communication connection with the limit switch 71 and the power element 25. A limit device 7 is respectively arranged on the front and rear sides of the ash scraping trolley 1, and when the ash scraping trolley 1 moves forward or backward to conflict with the limit device 7, the limit switch 71 of the limit device 7 can be disconnected. After receiving the disconnection signal of the limit switch 71 of the limit device 7, the electric control device stops driving the ash scraping trolley 1. The electric control device presets a rest time, and after the electric control device controls the power element 25 to stop driving the ash scraping trolley 1 and the preset rest time, the electric control device controls the power element 25 to reversely drive the ash scraping trolley 1. With such a design, when the plastering trolley 1 moves forward and collides with the limit device 7 on the front side, the limit switch 71 of the limit device 7 on the front side is disconnected, and at this time the electronic control device controls the power element 25 to stop driving the plastering trolley 1, and after a preset rest time, the electronic control device controls the power element 25 to drive the plastering trolley 1 to move backward, and when the plastering trolley 1 moves backward and collides with the limit device 7 on the rear side, the limit switch 71 of the limit device 7 on the rear side is disconnected, and at this time the electronic control device controls the power element 25 to stop driving the plastering trolley 1, and after a preset rest time, the electronic control device controls the power element 25 to drive the plastering trolley 1 to move forward, thereby automatically controlling the plastering trolley 1 to move back and forth.

[0053] In some embodiments, such as Figure 7 and Figure 8 As shown, the traction device 2 includes a traction housing 24 and a photoelectric sensor. The traction housing 24 is sealed and fixed at one end of the housing 4. The roller shaft 2b of the first driving roller 21 and the roller shaft 2b of the second driving roller 22 are rotatably connected to the traction housing 24. The encoding disk 23 of the photoelectric sensor is fixed on the roller shaft 2b of the first driving roller 21 or the roller shaft 2b of the second driving roller 22. The photoelectric element of the photoelectric sensor is fixed on the traction housing 24. The electronic control device is connected to the photoelectric sensor for communication. The electronic control device can calculate the moving speed and position of the plastering trolley 1 according to the pulse signal collected by the photoelectric sensor, and then can control the power element 25 to run at a suitable speed according to the moving speed and position of the plastering trolley 1. Specifically, in the illustrated embodiment, the roller 2a of the first driving roller 21 and the roller 2a of the second driving roller 22 are both located in the traction shell 24, both ends of the roller shaft 2b of the first driving roller 21 and both ends of the roller shaft 2b of the second driving roller 22 are respectively inserted into the connecting holes on the side wall of the traction shell 24, and the photoelectric sensor is fixed at one end of the roller shaft 2b of the second driving roller 22.

[0054] When in use, the following settings can be made according to the amount of ash: the rest time after the ash scraping trolley 1 moves forward to the limit position, the rest time after moving backward to the limit position, the operating speed of the power element 25, and the operating cycle. When the power element 25 adopts a variable frequency power element, a frequency converter can be set on the control cabinet, and the signal of the frequency converter is connected to the PLC of the control cabinet so that it can be displayed on the control interface of the control cabinet. The frequency of the power element 25 is controlled by rewriting the parameters on the control interface to adjust the operating speed of the power element 25. When the amount of ash is large, the operating speed of the power element 25 can be increased, and a shorter rest time and a shorter operating cycle can be set. When the amount of ash is small, the operating speed of the power element 25 can be reduced, and a longer rest time and a longer operating cycle can be set.

[0055] In addition to using the electric control device to automatically control the plastering trolley 1 to move back and forth, the plastering trolley 1 can also be manually controlled to move back and forth. During manual control, the forward switch and the reverse switch on the control cabinet are manually turned. The forward switch and the reverse switch control the power element 25 to run forward and reverse respectively. The power element 25 drives the plastering trolley 1 to move forward and backward respectively during forward and reverse operation. When the plastering trolley 1 moves forward to conflict with the limit device 7 on the front side, the limit switch 71 of the limit device 7 on the front side is disconnected. At this time, the electric control device controls the power element 25 to stop driving the plastering trolley 1. When the plastering trolley 1 moves backward to conflict with the limit device 7 on the rear side, the limit switch 71 of the limit device 7 on the rear side is disconnected. At this time, the electric control device controls the power element 25 to stop driving the plastering trolley 1. The difference between manual control and automatic control is that during manual control, the initial start of the plastering trolley 1 and the restart after a pause are both achieved by manually turning the forward switch and the reverse switch on the control cabinet.

[0056] In some embodiments, such as Fig. 9 and Fig.10 As shown, both ends of the roller shaft 2b of the first driving roller 21 and both ends of the roller shaft 2b of the second driving roller 22 are sleeved with an annular baffle 2c, which is formed by butting two arc-shaped baffles 2d, and the arc-shaped baffle 2d is locked on the threaded hole at the end of the roller 2a of the corresponding driving roller through a threaded fastener. With this design, the arc-shaped baffles 2d on both sides of the roller 2a can be removed from the inside of the traction shell 24, so that the roller 2a and the roller shaft 2b can be removed from the traction shell 24 at the same time.

[0057] In some embodiments, such as Fig.13 and Fig.14As shown, the limit device 7 includes a limit housing 72, a rotating shaft 73, a swing rod 74, a paddle 75 and a counterweight 76. The limit housing 72 is sealed and fixed on the top side of the housing 4. The rotating shaft 73 is rotatably connected to the limit housing 72. The paddle 75 is fixed to the rotating shaft 73. The limit switch 71 is fixed to the limit housing 72. The swing rod 74 is sleeved on the outer periphery of the rotating shaft 73, and one end of the swing rod 74 extends into the housing 4. When the plaster scraping trolley 1 moves forward or backward to the limit position, it swings against the swing rod 74, so that the swing rod 74 drives the rotating shaft 73 to rotate, and then the rotating shaft 73 drives the paddle 75 to touch the limit switch 71, so that the limit switch 71 is disconnected. The counterweight 76 is fixed to the swing rod 74 to use its own gravity to drive the swing rod 74 to reset. Specifically, in the illustrated embodiment, the limit switch 71 is fixed outside the limit housing 72, one end of the rotating shaft 73 passes through the through hole on the side wall of the limit housing 72 and extends to the outside of the limit housing 72, and the gap between the through hole and the rotating shaft 73 is sealed by the sealing end cover 77 using a threaded locking filler to prevent the limit device 7 from leaking. At the same time, the high-temperature flue gas in the casing 4 is isolated from contact with the limit switch 71, thereby protecting the limit switch 71 and the circuit. The paddle 75 is fixed to one end of the rotating shaft 73 located outside the limit housing 72, the upper end of the rocker arm 74 is located in the limit housing 72, and the lower end of the rocker arm 74 passes through the bottom side of the limit housing 72 and the top side of the casing 4 and extends into the casing 4.

[0058] The above embodiments can be freely combined without conflict.

[0059] The above specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A ash conveying device, characterized in that: The ash conveying equipment comprises a casing (4), an ash scraping trolley (1), a traction device (2), a tensioning device (3), a front traction rope (5) and a rear traction rope (6); the casing (4) is provided with an ash receiving port on the top side thereof and connected to the ash lowering port of the ash hopper (8); the casing (4) is provided with an ash dropping port on the bottom side thereof; the ash scraping trolley (1) is located in the casing (4); the ash scraping trolley (1) comprises a frame (11) and a running wheel (12); the running wheel (12) is rotatably connected to the frame (11) and supported on a bottom plate of the casing (4); one of the traction device (2) and the tensioning device (3) is fixed to the front end of the casing (4); and the other is fixed to the bottom plate of the casing (4). At the rear end of the housing (4), the traction device (2) comprises a power element (25), a first driving roller (21) and a second driving roller (22); the tensioning device (3) comprises a tensioning roller; the front traction rope (5) and the rear traction rope (6) are respectively connected to the front and rear ends of the plaster scraper trolley (1); the free end of the front traction rope (5) is wound around the first driving roller (21); the free end of the rear traction rope (6) bypasses the tensioning roller and then turns back and is wound around the second driving roller (22); the power element (25) can drive the first driving roller (21) and the second driving roller (22) to rotate so as to drive the plaster scraper trolley (1) to move forward and backward.

2. The ash conveying equipment according to claim 1, characterized in that: The scraping trolley (1) comprises a scraper (13) and a pull rod assembly (15), wherein the pull rod assembly (15) comprises a pull rod (151), a push member (153), a pull rod limiting sleeve (154) and a pull rod limiting plate (155), wherein the pull rod (151) is connected to the frame (11) in a manner that it can slide forward and backward, and the scraper (13) is connected to the frame (11) in a manner that it can flip up and down, and the push member (153) is fixed to the pull rod (151), and the front traction rope (5) and the rear traction rope (6) are respectively connected to the front and rear ends of the pull rod (151), and when the pull rod (151) slides forward and backward relative to the frame (11), it can drive The push member (153) pushes the scraper (13) to flip up and down, the pull rod limiting sleeve (154) is fixed on the frame (11), the inner hole of the pull rod limiting sleeve (154) is a non-circular hole, and the pull rod limiting sleeve (154) is sleeved on the outer periphery of the non-circular cross section of the pull rod (151) through the non-circular hole to limit the rotation of the pull rod (151) relative to the frame (11), and the pull rod limiting plate (155) is fixed on the pull rod (151). When the pull rod (151) slides forward and backward to the extreme position, the pull rod limiting plate (155) contacts the pull rod limiting sleeve (154) to push the scraper trolley (1) to move forward and backward as a whole.

3. The ash conveying equipment according to claim 1, characterized in that: The scraping trolley (1) comprises a scraping assembly (16), wherein the scraping assembly (16) comprises a bottom scraping piece (161), a pre-compressed scraping spring (164), and a scraping thread adjustment piece (165) for adjusting the degree of compression of the scraping spring (164); the bottom scraping piece (161) can float up and down relative to the frame (11); the bottom surface of the bottom scraping piece (161) fits in an area on the bottom plate where the traveling wheel (12) passes; and the scraping spring (164) can give the bottom scraping piece (161) an elastic force toward the bottom plate.

4. The ash conveying equipment according to claim 1, characterized in that: The plaster scraping trolley (1) comprises a guide assembly (17), and the guide assembly (17) is arranged on both the left and right sides of the plaster scraping trolley (1). The guide assembly (17) comprises a guide wheel (171), a guide swing arm (172), a pre-compressed guide spring (174), and a guide thread adjustment member (176) for adjusting the degree of compression of the guide spring (174). The guide wheel (171) is rotatably connected to the guide swing arm (172), and the outer peripheral surface of the guide wheel (171) contacts the side plate of the casing (4) on the same side. The guide swing arm (172) is connected to the frame (11) so as to be swingable left and right, and the guide spring (174) can provide the guide swing arm (172) with an elastic force toward the side plate on the same side.

5. The ash conveying equipment according to claim 4, characterized in that: The plaster scraping trolley (1) comprises a side plaster scraping piece (18), the side surface of the side plaster scraping piece (18) being in contact with the side plate on the same side, the side plaster scraping piece (18) being connected to the vehicle frame (11) so as to be swingable left and right, the side plaster scraping piece (18) being connected to the guide swing arm (172) on the same side, and when the guide swing arm (172) swings left and right relative to the vehicle frame (11), it can drive the side plaster scraping piece (18) on the same side to swing left and right relative to the vehicle frame (11).

6. The ash conveying equipment according to claim 1, characterized in that: The tensioning device (3) comprises a tensioning housing (32), a tensioning swing arm (33), a pre-compressed tensioning spring (35), a tensioning spring seat (34) and a tensioning threaded adjustment member (39); the tensioning swing arm (33) is connected to the tensioning housing (32) so as to be able to swing forward and backward; the tensioning wheel (31) is rotatably connected to the tensioning swing arm (33); the tensioning spring (35) is able to exert an elastic force on the tensioning spring seat (34) toward the tensioning swing arm (33), so that the tensioning spring seat (34) can push the tensioning swing arm (33) under the action of the elastic force, thereby driving the tensioning wheel (31) to swing in a direction away from the traction device (2); and the tensioning threaded adjustment member (39) is threadedly connected to the tensioning spring seat (34) and can drive the tensioning spring seat (34) to move in a direction close to or away from the tensioning swing arm (33) by screwing the tensioning threaded adjustment member (39).

7. The ash conveying equipment according to any one of claims 1 to 6, characterized in that: The ash conveyor comprises an electric control device and a limit device (7), wherein the limit device (7) comprises a limit switch (71), and the electric control device is in communication connection with the limit switch (71) and the power element (25). The limit device (7) is located between the traction device (2) and the tensioning device (3), and one limit device (7) is provided at the front and rear of the ash scraping trolley (1). When the ash scraping trolley (1) moves forward or backward to contact the limit device (7), the limit switch (71) of the limit device (7) is disconnected. After receiving the disconnection signal of the limit switch (71) of the limit device (7), the electric control device stops driving the ash scraping trolley (1). The electric control device presets a rest time, and after the preset rest time, the electric control device controls the power element (25) to stop driving the ash scraping trolley (1) and controls the power element (25) to reversely drive the ash scraping trolley (1).

8. The ash conveying equipment according to claim 7, characterized in that: The traction device (2) comprises a traction housing (24) and a photoelectric sensor, wherein the roller shaft (2b) of the first drive roller (21) and the roller shaft (2b) of the second drive roller (22) are rotatably connected to the traction housing (24), the encoding disk (23) of the photoelectric sensor is fixed on the roller shaft (2b) of the first drive roller (21) or the roller shaft (2b) of the second drive roller (22), the photoelectric element of the photoelectric sensor is fixed on the traction housing (24), and the electric control device is connected to the photoelectric sensor for communication, and the electric control device can calculate the moving speed and position of the plaster scraping trolley (1) according to the pulse signal collected by the photoelectric sensor.

9. The ash conveying equipment according to claim 8, characterized in that: Both ends of the roller shaft (2b) of the first driving roller (21) and both ends of the roller shaft (2b) of the second driving roller (22) are sleeved with an annular baffle (2c), the annular baffle (2c) being formed by butting two arc-shaped baffles (2d), the arc-shaped baffles (2d) being respectively locked on the end threaded holes of the roller barrels (2a) of the corresponding driving rollers by means of threaded fasteners.

10. The ash conveying equipment according to claim 7, characterized in that: The limit device (7) comprises a limit housing (72), a rotating shaft (73), a swing rod (74), a paddle (75) and a counterweight (76); the rotating shaft (73) is rotatably connected to the limit housing (72); the paddle (75) is fixed to the rotating shaft (73); the limit switch (71) is fixed to the limit housing (72); the swing rod (74) is sleeved on the outer periphery of the rotating shaft (73); one end of the swing rod (74) extends When the scraper trolley (1) moves forward or backward to the extreme position, it contacts the swinging rod (74), causing the swinging rod (74) to drive the rotating shaft (73) to rotate, thereby causing the rotating shaft (73) to drive the paddle (75) to touch the limit switch (71), causing the limit switch (71) to be disconnected. The counterweight (76) is fixed on the swinging rod (74) to use its own gravity to drive the swinging rod (74) to reset.

Images