A device for treating tailings accumulated by a scraper drag conveyor

Abstract

The application discloses a tail slag accumulation treatment device of a scraper slag conveyor and relates to the technical field of the scraper slag conveyor.The tail slag accumulation treatment device of the scraper slag conveyor comprises a slag bin, a slag outlet and a slag scraping mechanism.The tail slag accumulation treatment device of the scraper slag conveyor scrapes off the ash slag by driving the scraper body and the slag scraping disc to scrape through the chain.When the scraper body extrudes the slag scraping disc to rotate, the water spraying box rotates away from the slag scraping disc and sprays and flushes the scraper body from bottom to top through the nozzles, and the slag scraping disc and the slag removal box rotate synchronously, so that the slag scraping disc drives the protrusions to abut and fit the scraper body, and when the slag removal box moves along the guide rail, the protrusions can scrape off the residual slag from the lower part to the upper part of the scraper body, the slag accumulation at the front part of the scraper body can be treated through the combination of the slag scraping and water flow flushing, the slag scraping mechanism and the upper water spraying cleaning mechanism are linked and matched, and the tail slag accumulation treatment device of the scraper slag conveyor can efficiently treat the front and back surfaces of the scraper when the scraper slag conveyor operates.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slag conveyer, in particular to a tail slag treatment device of a scraper slag conveyer. BACKGROUND

[0002] The scraper slag conveyer is mainly used for separating solid materials meeting certain particle size from liquid and solid mixture, is a continuous and efficient mechanical slag removal equipment, and is often used in sorting or solid-liquid separation occasions. However, after a small amount of slag is accumulated in the tail of the existing scraper slag conveyer, the slag conveyer continues to run, resulting in more and more slag accumulation, and finally leading to the shutdown of the scraper slag conveyer due to too much slag accumulation.

[0003] According to the search, the patent with the publication number CN115520987B discloses a tail slag treatment device of a scraper slag conveyer. The device is provided with a slag bin, a slag conveyer body, a slag bucket, a plurality of scrapers, a cleaning device, an image acquisition device and a controller. The cleaning device and the image acquisition device cooperate with the controller to clean the scrapers in time according to the parameters collected by the image acquisition device, thereby ensuring the continuous operation of the slag conveyer body.

[0004] The above technical solution uses the cleaning device to clean the scrapers by cooperating with the horizontal pipe, the cleaning pipe and the nozzle. However, this single water spraying cleaning method cannot accurately aim at the scrapers, and the cleaning method is easy to cause the residual slag to flow back to the slag bin of the scraper slag conveyer due to the splashing water. Moreover, after the scrapers moving with the slag conveyer are turned over, the cleaning water sprayed from the top to the bottom can only wash the front part of the scrapers for a short time, and then wash the back of the scrapers. In this process, the front slag accumulation of the scrapers is not completely treated, so that the conventional scraper slag conveyer cannot comprehensively treat the front and back of the scrapers. SUMMARY

[0005] The present application aims to provide a tail slag treatment device of a scraper slag conveyer to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a tail slag treatment device of a scraper slag conveyer, comprising a slag bin, a slag outlet and a slag scraping mechanism, the inside of the slag bin is provided with two groups of transmission sprockets, the outside of the two groups of transmission sprockets is provided with a chain, the chain is provided with a scraper body, the front part of the slag bin is provided with a water outlet pipe, the tail part of the slag bin is provided with a slag outlet, the top of the slag outlet is provided with a support seat, the upper side of the support seat is provided with a motor.

[0007] The slag bin is provided with a slag scraping mechanism near the inside of the support base, the slag scraping mechanism comprises a guide rail mounted on the inner wall of the slag bin, a sliding block is connected inside the guide rail, the sliding block is movably connected with a slag removal box through a rotating shaft, one side of the slag removal box is rotatably connected with a slag scraping disc for cleaning the sticky substances on the surface of the scraper body, the inner wall of both ends of the slag removal box is slidably connected with sliding rails, a fixed strip mounted with the lower edge of the slag scraping disc is welded between the two sliding rails, a water spraying box abutting against the bottom of the slag scraping disc is also rotatably connected between the two sliding rails, a nozzle is mounted on the upper side of the water spraying box, and a tension spring is connected between the water spraying box and the lower edge of the inner wall of the slag removal box.

[0008] An upper water spraying cleaning mechanism is arranged on the inner side of the slag removal box, and a sliding sleeve is equidistantly mounted on the side of the slag removal box away from the slag scraping disc, an arc-shaped spray pipe is slidably connected inside the sliding sleeve, and a guide pipe is fixed to the bottom of the arc-shaped spray pipe.

[0009] Preferably, the top of the slag scraping disc is in a hook-shaped structure, one side of the top of the slag scraping disc is an arc surface, the other side of the top of the slag scraping disc is an inclined surface, equidistant flow guide slots are formed in the inside of the slag scraping disc, the top openings of the flow guide slots correspond to the inclined surface of the top of the slag scraping disc, and protrusions are equidistantly arranged on the surface of the side of the slag scraping disc close to the scraper body.

[0010] Preferably, the bottom of the slag scraping disc and the top of the water spraying box are matched inclined surfaces, the nozzles on the top of the water spraying box correspond to the bottom openings of the flow guide slots.

[0011] Preferably, a limiting pin is fixed to one end of the sliding rail close to the water spraying box, and supporting plates are fixed to both ends of the water spraying box.

[0012] Preferably, a central rod is fixed in the inside of the guide rail and penetrates and is connected with the sliding block, a buffer spring is connected between the inner wall of the guide rail and the sliding block and sleeved with the central rod, and a torsional spring is connected to the rotating shaft between the sliding block and the slag removal box.

[0013] Preferably, fan-shaped teeth are fixed to both ends of the slag scraping disc, disc teeth are connected to the inner wall of both ends of the slag removal box through bearings, and the disc teeth are meshingly connected with the fan-shaped teeth.

[0014] Preferably, a driving rack is fixed to the side of the arc-shaped spray pipe close to both ends of the slag removal box, and the driving rack is meshingly connected with the disc teeth.

[0015] Preferably, a water pump is further mounted on the upper side of the support base close to the motor, and the water spraying box and the guide pipe are connected with the output port of the water pump through hoses.

[0016] Preferably, an inclined plate is fixed to the bottom of the inner side of the slag removal box.

[0017] Preferably, the inner upper edge of the slag outlet is fixed with a support, the top of the support is rotationally connected with a baffle for guiding the residual slag, a return spring is connected between the support and the baffle, and a splash-proof cover is installed on one side of the slag bin close to the support seat.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1. The tail slag accumulation treatment device of the scraper slag conveyor, by the chain driving the scraper body and the scraper disc to scrape off the ash and slag, when the scraper body extrudes the rotation of the scraper disc, the water spraying box rotates away from the scraper disc and sprays water from the nozzle to the scraper body from bottom to top, at the same time, the synchronous rotation of the scraper disc and the slag removal box can make the scraper disc drive the protrusions to abut and fit the scraper body, and when the slag removal box moves along the guide rail, the protrusions can remove the residual slag from the lower part to the upper part of the scraper body, the combination of the residual slag scraping and water flow washing can realize the accumulation treatment of the front part of the scraper body, the linkage of the scraper mechanism and the upper water spraying cleaning mechanism can ensure that the scraper of the scraper slag conveyor can realize efficient accumulation treatment of the front and back surfaces during operation.

[0020] 2. The tail slag accumulation treatment device of the scraper slag conveyor, when the scraper body moves from away from the scraper disc to just abutting the scraper disc, the water spraying box guides the water source into the flow guide slot inside the scraper disc through the nozzle, so that the top opening of the flow guide slot can remove the ash and slag covering the inclined surface of the scraper disc during water spraying, and the water flow sprayed by the arc-shaped spray pipe can wash the inner side surface of the scraper disc to prevent the ash and slag from remaining in the slag removal box, so as to ensure that the slag removal box and the scraper disc have the function of automatic cleaning.

[0021] 3. The tail slag accumulation treatment device of the scraper slag conveyor, when the scraper body extrudes the rotation of the scraper disc, the scraper disc drives the two ends of the fan-shaped teeth to positively mesh with the disc teeth, at the same time, the disc teeth drive the driving rack meshing on the other side to rotate in a circle, so that the driving rack drives the arc-shaped spray pipe to slide along the sliding sleeve on one side of the slag removal box, when the water pump pumps the water source into the guide pipe through the hose, the water can be distributed to all the arc-shaped spray pipes through the guide pipe, and finally the arc-shaped spray pipe sliding upward can wash and remove the slag on the back surface of the scraper body, so as to ensure that the back surface of the moving scraper body is cleaned and the slag is removed. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a first three-dimensional structure schematic view of the tail slag accumulation treatment device of the scraper slag conveyor.

[0023] Figure 2 It is a second three-dimensional structure schematic view of the tail slag accumulation treatment device of the scraper slag conveyor.

[0024] Figure 3 It is a front view cross-sectional structure schematic view of the tail slag accumulation treatment device of the scraper slag conveyor.

[0025] Figure 4 The three-dimensional structure diagram of the residue-free bin of the present application;

[0026] Figure 5 The first three-dimensional structure diagram of the linkage of the residue scraping mechanism and the upper water spraying cleaning mechanism of the present application;

[0027] Figure 6 The first front view structure diagram of the linkage of the residue scraping mechanism and the upper water spraying cleaning mechanism of the present application;

[0028] Figure 7 The second three-dimensional structure diagram of the linkage of the residue scraping mechanism and the upper water spraying cleaning mechanism of the present application;

[0029] Figure 8 The second front view structure diagram of the linkage of the residue scraping mechanism and the upper water spraying cleaning mechanism of the present application;

[0030] Figure 9 The third three-dimensional structure diagram of the linkage of the residue scraping mechanism and the upper water spraying cleaning mechanism of the present application;

[0031] Figure 10 The third front view structure diagram of the linkage of the residue scraping mechanism and the upper water spraying cleaning mechanism of the present application;

[0032] Figure 11 The fourth three-dimensional structure diagram of the linkage of the residue scraping mechanism and the upper water spraying cleaning mechanism of the present application;

[0033] Figure 12 The three-dimensional sectional structure diagram of the upper water spraying cleaning mechanism of the present application;

[0034] Figure 13 The first three-dimensional sectional structure diagram of the linkage of the residue scraping disc and the water spraying box of the present application;

[0035] Figure 14 The second three-dimensional sectional structure diagram of the linkage of the residue scraping disc and the water spraying box of the present application;

[0036] Figure 15 The three-dimensional structure diagram of the guide rail of the present application.

[0037] In the diagram: 1. Slag bin; 101. Drive sprocket; 102. Chain; 103. Scraper body; 104. Motor; 2. Slag outlet; 3. Support base; 4. Slag scraping mechanism; 401. Guide rail; 4011. Buffer spring; 4012. Slider; 4013. Torsion spring; 402. Slag removal box; 403. Slag scraping disc; 4031. Guide slot; 4032. Protrusion; 404. Slide rail; 4041 1. Fixing strip; 4042. Limiting pin; 405. Spray box; 4051. Support plate; 406. Nozzle; 407. Inclined plate; 408. Tension spring; 5. Hose; 6. Water pump; 7. Upper spray cleaning mechanism; 701. Fan-shaped tooth; 702. Disc tooth; 703. Sliding sleeve; 704. Arc-shaped spray pipe; 705. Drive rack; 706. Guide tube; 8. Bracket; 9. Baffle; 10. Splash guard. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-15 The present invention provides a technical solution: a slag removal device for the tail end of a scraper slag remover, comprising a slag bin 1, a slag outlet 2 and a scraping mechanism 4. The slag bin 1 is provided with two sets of transmission sprockets 101 inside, and a chain 102 is wound around the outside of the two sets of transmission sprockets 101. A scraper body 103 is installed on the chain 102. A water outlet pipe is provided at the front of the slag bin 1, and a slag outlet 2 is provided at the tail end of the slag bin 1. A support base 3 is installed on the top of the slag outlet 2, and a motor 104 is installed on the upper side of the support base 3.

[0040] A slag scraping mechanism 4 is installed inside the slag bin 1 near the support base 3. The slag scraping mechanism 4 includes a guide rail 401 installed on the inner wall of the slag bin 1. A slider 4012 is connected inside the guide rail 401. The slider 4012 is movably connected to a slag removal box 402 via a rotating shaft. The slag removal box 402 and the slag scraping disc 403 form a funnel-shaped structure. The funnel-shaped structure of the slag removal box 402 and the slag scraping disc 403 can centrally guide the sewage slag. A slag scraping disc 403 for cleaning the surface of the scraper body 103 is rotatably connected to one side of the slag removal box 402. The inner walls at both ends of the slag removal box 402 are slidably connected to... The slide rail 404 has a fixing strip 4041 welded between the two slide rails 404 and installed on the lower edge of the slag scraper 403. The two slide rails 404 are also rotatably connected to a water spray box 405 that abuts against the bottom of the slag scraper 403. The slide rail 404 has an arc-shaped structure, and the center of the slide rail 404 coincides with the rotation axis of the slag scraper 403. When the slag scraper 403 rotates, it can drive the slide rail 404 to rotate in a circle through the fixing strip 4041. The upper side of the water spray box 405 is equipped with a nozzle 406. A tension spring 408 is connected between the water spray box 405 and the lower edge of the inner wall of the slag removal box 402.

[0041] The inner side of the slag removal box 402 is provided with an upper water spray cleaning mechanism 7. The slag removal box 402 is equidistantly installed with a sliding sleeve 703 on the side away from the slag scraper 403. An arc-shaped spray pipe 704 is slidably connected inside the sliding sleeve 703. The upper end of the arc-shaped spray pipe 704 is provided with a bend. The bottom of the arc-shaped spray pipe 704 is fixed with a guide pipe 706. A water pump 6 is also installed on the upper side of the support base 3 near the motor 104. The water spray box 405 and the guide pipe 706 are both connected to the output port of the water pump 6 through a hose 5.

[0042] The top of the scraper disc 403 has a hook-shaped structure, and one side of the top of the scraper disc 403 is an arc-shaped surface, while the other side of the top of the scraper disc 403 is an inclined surface. The interior of the scraper disc 403 is provided with equidistant guide slits 4031. The top opening of the guide slits 4031 corresponds to the inclined surface of the top of the scraper disc 403. The surface of the scraper disc 403 near the scraper body 103 is provided with equidistant protrusions 4032. When the scraper disc 403 is placed vertically, the tension spring 408 tilts against the water spray box 405, so that the top inclined surface of the water spray box 405 will be in close contact with the bottom inclined surface of the scraper disc 403, thereby causing the nozzle 406 of the water spray box 405 to abut against the bottom opening of the guide slit 4031 of the scraper disc 403.

[0043] Please see Figure 14 The bottom of the slag scraper 403 and the top of the water spray box 405 are matched with a sloping structure, and the nozzle 406 on the top of the water spray box 405 corresponds to the bottom opening of the guide slit 4031.

[0044] In specific implementation, when the motor 104 is started, one of the transmission sprockets 101 can be driven to rotate through the chain belt. Under the action of the two transmission sprockets 101, the chain 102 and the scraper body 103 can be driven to run in the slag bin 1. The ash and water in the slag bin 1 can be separated by several scraper bodies 103. The ash on the top layer of wastewater is scraped by the scraper body 103 to the slag outlet 2 for dumping.

[0045] When the scraper body 103 moves to the top of the chain 102, the scraper body 103 will carry ash and slag and hit the top of the scraper disc 403, so that the top of the scraper disc 403 scrapes the front of the scraper body 103. The scraper disc 403 can scrape off the ash and slag through the inclined surface at the top. When the water pump 6 is running, it can pump water into the spray box 405 through the hose 5. At the same time, the spray box 405 guides the water source into the guide slit 4031 inside the scraper disc 403 through the nozzle 406, so that the top opening of the guide slit 4031 can remove the ash and slag covering the inclined surface of the scraper disc 403 when spraying water.

[0046] As the scraper body 103 continues to rotate with the chain 102, its angle changes. The moving scraper body 103 also compresses the scraper disc 403, causing it to rotate. This allows the bottom of the scraper disc 403 to rotate along the inner walls of the slide rails 404 at both ends of the slag removal box 402 via the fixing bar 4041. The water spray box 405, rotating away from the slag removal box 402, stretches the tension spring 408. The tension spring 408 pulls the water spray box 405 to deflect between the two slide rails 404, causing the water spray box 405 to rotate away from the scraper. The bottom of the plate 403 allows the nozzle 406 of the water spray box 405 to be moved to the outside of the scraper plate 403. When spraying water, the nozzle 406 of the water spray box 405 can spray water from bottom to top to rinse the lower part of the scraper body 103. At the same time, the water sprayed from the nozzle 406 will be blocked by the scraper body 103 and the scraper plate 403, so that the water used for cleaning completely covers the scraper body 103. The water sprayed from the nozzle 406 can impact the surface of the protrusion 4032 and be dispersed, so that the sprayed water flow is dispersed to wash the scraper body 103.

[0047] When the scraper body 103 rotates and moves downward along with the chain 102, it will push the scraper disc 403 and the slag removal box 402 to rotate synchronously. This causes the two ends of the slag removal box 402 to deflect around the slider 4012 via the rotating shaft. This causes the scraper disc 403 to drive the protrusion 4032 to abut against and adhere to the scraper body 103. When the scraper body 103 continues to move downward, it can push the slider 4012 at both ends of the slag removal box 402 to move along the guide rail 401 and squeeze the buffer spring 4011. At this time, the scraper disc 403 can perform secondary scraping of residue from the bottom to the top of the scraper body 103 through the protrusion 4032 on its surface. At the same time, the water sprayed by the water spray box 405 can wash along the gap between the scraper disc 403 and the scraper body 103. The combination of scraping residue and washing water can achieve the treatment of slag accumulation in front of the scraper body 103.

[0048] Please see Figure 8 , Figure 10 , Figure 12 and Figure 13 A limit pin 4042 is fixed at one end of the slide rail 404 near the water spray box 405. Support plates 4051 are fixed at both ends of the water spray box 405. When the tension spring 408 pulls the water spray box 405 to produce an angular deflection, the support plates 4051 at both ends of the water spray box 405 abut against the limit pin 4042 at the end of the slide rail 404, which can limit the deflection angle of the water spray box 405 and prevent the water spray direction from being inaccurate due to the excessive rotation angle of the water spray box 405.

[0049] Please see Figure 5 , Figure 6 , Figure 12 and Figure 15 A central rod is fixed inside the guide rail 401, and the central rod is inserted through the slider 4012. A buffer spring 4011, which is sleeved with the central rod, is connected between the inner wall of the guide rail 401 and the slider 4012. A torsion spring 4013 is connected on the rotating shaft between the slider 4012 and the slag removal box 402. When the scraper body 103 squeezes the slag removal disc 403 and causes the slag removal box 402 to rotate between the two sliders 4012, the torsion spring 4013 will be rotated and pressed. When the scraper body 103 disengages from the slag removal disc 403, the slag removal box 402 will automatically deflect and reset. At the same time, the elastic push of the buffer spring 4011 can make the slag removal box 402 reset and move to the initial position.

[0050] Please see Figures 7-12 The two ends of the slag scraper 403 are fixed with fan-shaped teeth 701. The inner walls of the two ends of the slag removal box 402 are connected with disc teeth 702 through bearings, and the disc teeth 702 are meshed with the fan-shaped teeth 701. The sides of the arc-shaped spray pipe 704 near the two ends of the slag removal box 402 are fixed with drive racks 705, and the drive racks 705 are meshed with the disc teeth 702.

[0051] In practice, as the scraper body 103 moves from away from the slag scraper disc 403 to just touching it, the water jet from the arc-shaped nozzle 704 washes the inner side of the slag scraper disc 403 to prevent ash residue from remaining in the slag removal box 402. When the scraper body 103 squeezes the slag scraper disc 403 to rotate, the slag scraper disc 403 drives the fan-shaped teeth 701 at both ends to mesh with the disc teeth 702 in a positive direction. At the same time, the disc teeth 702 drives the drive rack 705 on the other side to rotate in a circular motion, so that the drive rack 705 drives the arc-shaped nozzle 704 to slide along the sliding sleeve 703 on one side of the slag removal box 402. When the water pump 6 pumps water into the conduit 706 through the hose 5, the water can be distributed to all the arc-shaped nozzles 704 through the conduit 706. Finally, the upward sliding arc-shaped nozzles 704 wash and remove slag from the back of the scraper body 103.

[0052] Please see Figures 6-10 An inclined plate 407 is fixed to the bottom of the inner side of the slag removal box 402. When the ash falls down from the inside of the slag removal box 402, the inclined plate 407 makes the ash fall accurately into the slag outlet 2.

[0053] Please see Figures 1-4 A bracket 8 is fixed to the upper edge of the slag outlet 2. A baffle 9 for guiding the residue is rotatably connected to the top of the bracket 8. A reset spring is connected between the bracket 8 and the baffle 9. A splash guard 10 is installed on the side of the slag bin 1 near the support base 3. When the slag scraping mechanism 4 and the upper water spray cleaning mechanism 7 are used in conjunction, the splash guard 10 can prevent the cleaning water from splashing.

[0054] In practice, when the scraper body 103 rotates back to the bottom of the slag bin 1 along with the chain 102, the scraper body 103 will hit the baffle 9 on the top of the slag outlet 2, causing the baffle 9 to rotate on the top of the support 8, which will squeeze the baffle 9 to deflect, thus not hindering the movement of the scraper body 103. Then, the baffle 9 is pulled back to its original position by the reset spring, so that the baffle 9 can block the slag scraping mechanism 4 and the upper water spray cleaning mechanism 7 from cleaning the fallen slag, preventing the fallen slag from returning to the slag bin 1.

[0055] In summary, the starting motor 104 drives the transmission sprocket 101 to rotate. Under the action of the two transmission sprockets 101, the chain 102 and the scraper body 103 can be driven to run in the slag bin 1. The ash and slag in the slag bin 1 can be separated from the water by the scraper body 103. The ash and slag on the top of the wastewater are scraped to the slag outlet 2 for dumping. In addition, the scraping mechanism 4 and the upper water spray cleaning mechanism 7 work together to remove slag and clean the scraper body 103 that moves with the chain 102, preventing the ash and slag in the wastewater from accumulating at the tail of the slag remover. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0056] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tail slag handling device of a scraper, comprising a slag bin (1), a slag outlet (2) and a slag scraping mechanism (4), the inside of the slag bin (1) is provided with two groups of transmission sprockets (101), the outer side of the two groups of transmission sprockets (101) is provided with a chain (102), the chain (102) is provided with a scraper body (103), the front of the slag bin (1) is provided with a water outlet pipe, the tail of the slag bin (1) is provided with a slag outlet (2), the top of the slag outlet (2) is provided with a support seat (3), the upper side of the support seat (3) is provided with a motor (104), characterized in that: the inside of the slag bin (1) close to the support seat (3) is provided with a slag scraping mechanism (4), the slag scraping mechanism (4) comprises a guide rail (401) mounted on the inner wall of the slag bin (1), the inside of the guide rail (401) is connected with a sliding block (4012), the sliding block (4012) is movably connected with a slag removal box (402) through a rotating shaft, one side of the slag removal box (402) is rotatably connected with a slag scraping disc (403) for cleaning the adhering substances on the surface of the scraper body (103), the inner wall of both ends of the slag removal box (402) is slidably connected with a sliding rail (404), two sliding rails (404) are welded with a fixed strip (4041) mounted with the lower edge of the slag scraping disc (403), two sliding rails (404) are also rotatably connected with a water spraying box (405) abutting against the bottom of the slag scraping disc (403), the upper side of the water spraying box (405) is provided with a nozzle (406), the water spraying box (405) and the lower edge of the inner wall of the slag removal box (402) are connected with a tension spring (408); the inside of the slag removal box (402) is provided with an upper water spraying cleaning mechanism (7), the side of the slag removal box (402) away from the slag scraping disc (403) is equidistantly provided with a sliding sleeve (703), the inside of the sliding sleeve (703) is slidably connected with an arc-shaped spray pipe (704), the bottom of the arc-shaped spray pipe (704) is fixedly provided with a guide pipe (706); the top of the slag scraping disc (403) is in a hook-shaped structure, one side of the top of the slag scraping disc (403) is an arc surface, and the other side of the top of the slag scraping disc (403) is an inclined surface, the inside of the slag scraping disc (403) is equidistantly provided with a flow guide slot (4031), the top opening of the flow guide slot (4031) corresponds to the inclined surface of the top of the slag scraping disc (403), the surface of the side of the slag scraping disc (403) close to the scraper body (103) is provided with equidistantly distributed protrusions (4032); the bottom of the slag scraping disc (403) and the top of the water spraying box (405) are matching inclined surfaces, the nozzle (406) on the top of the water spraying box (405) corresponds to the bottom opening of the flow guide slot (4031). The inner part of the guide rail (401) is fixed with a center rod, the center rod is inserted through the sliding block (4012), the inner wall of the guide rail (401) is connected with the sliding block (4012), a buffer spring (4011) is sleeved with the center rod, the rotating shaft between the sliding block (4012) and the slag removal box (402) is connected with a torsional spring (4013); Both ends of the slag scraping disc (403) are fixed with fan-shaped teeth (701), the inner wall of both ends of the slag removal box (402) is connected with disc teeth (702) through bearings, and the disc teeth (702) are meshed and connected with the fan-shaped teeth (701); The side of the arc-shaped spray pipe (704) near both ends of the slag removal box (402) is fixed with a driving rack (705), and the driving rack (705) is meshed and connected with the disc teeth (702).

2. A tail piece device for a scraper dredger according to claim 1, characterized in that The sliding rail (404) is fixed with a limiting pin (4042) at one end near the water spraying box (405), and both ends of the water spraying box (405) are fixed with supporting plates (4051).

3. A tail piece device for a scraper dredger according to claim 1, characterized in that: The upper side of the supporting seat (3) near the motor (104) is further provided with a water pump (6), and the water spraying box (405) and the conduit (706) are connected with the output port of the water pump (6) through a hose (5).

4. A tail piece device for a scraper dredger according to claim 1, characterized in that: The inner side of the bottom of the slag removal box (402) is fixed with an inclined plate (407).

5. A tail piece device for a scraper dredger according to claim 1, characterized in that: The inner upper edge of the slag outlet (2) is fixed with a support (8), the top of the support (8) is rotatably connected with a baffle (9) for guiding the residual slag, a return spring is connected between the support (8) and the baffle (9), and the slag bin (1) is installed with a splash-proof cover (10) on one side near the supporting seat (3).

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