A dry scraper slag discharge device

Abstract

This invention relates to the field of material conveying technology, specifically to a dry scraper slag discharge device, comprising a discharge frame, inside which a conveying plate is fixedly installed. The conveying plate is divided into a horizontal section and an inclined section. The horizontal section is used to receive slag, and the inclined section is used for draining water and lifting slag. A scraper chain is rotatably mounted on the inner wall of the discharge frame. The conveying direction of the scraper chain is the same as that of the conveying plate. Two sets of scraper chains are arranged symmetrically relative to the conveying plate. Slag scrapers are arranged at equal intervals between adjacent scraper chains. As the scraper chains are conveyed, the ash and slag can be gradually moved along the horizontal surface of the conveying plate to the inclined surface until it reaches the discharge port at the inclined surface of the conveying plate. When the slag is conveyed from the inclined section, the slag scrapers can lift the ash and slag and drain residual moisture, achieving the requirements of dry slag discharge. A sealing frame is also designed to make the entire slag discharge environment a sealed environment, reducing dust emission.

Description

Technical Field

[0001] This invention relates to the field of material conveying technology, specifically to a dry scraper slag discharge device. Background Technology

[0002] Currently, a large amount of ash and slag is generated during the operation of thermal power plants and chemical boilers. There are two main ways to treat ash and slag. One is wet slag removal. The main drawback of the wet slag removal system is that it relies on a large amount of cooling water, which can lead to the following problems: water waste and secondary pollution: heavy metal ions in the high-humidity ash and slag percolation.

[0003] Secondly, there is the dry scraper slag discharge equipment, whose core function is to transport the hot slag generated by boiler combustion to the slag bin through a scraper chain under waterless or micro-spraying conditions, thereby achieving energy-saving and environmentally friendly continuous slag discharge.

[0004] However, current dry scraper conveying equipment has some drawbacks. For example, when conveying ash and slag, the bottom of the scraper needs to contact the conveyor base plate to ensure centralized conveying. However, after long-term use, the contact area between the bottom of the scraper and the conveyor base plate will wear out severely, resulting in gaps between them. This can lead to slag leakage during conveying. When the bottom of the scraper is worn, it needs to be replaced. However, for the sake of conveying stability, the scraper is usually fixed between chains, which makes replacement quite troublesome.

[0005] Therefore, it is necessary to provide a dry scraper slag removal device to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present invention, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] The technical solution adopted by the present invention to solve its technical problem is: a dry scraper slag discharge device, including a discharge frame, a conveying plate fixedly installed inside the discharge frame, the conveying plate being divided into a horizontal section and an inclined section, the horizontal section being used for receiving slag, and the inclined section being used for draining water and lifting slag, a scraper chain being rotatably arranged on the inner wall of the discharge frame, the conveying direction of the scraper chain being the same as the conveying direction of the conveying plate, two sets of scraper chains being arranged symmetrically relative to the conveying plate, slag scrapers being arranged at equal distances between adjacent scraper chains, a sealing frame being arranged above the discharge frame, and the lower end face of the slag scraper contacting the upper end face of the conveying plate.

[0008] Furthermore, a cylindrical pin is fixedly installed on the surface of the scraper chain link, and a hinge fork is rotatably provided inside the cylindrical pin. The slag scraper is fixedly installed on the side wall of the hinge fork. During operation, the slag scraper is installed inside the cylindrical pin through the hinge fork and connected to the link of the scraper chain. This allows the slag scraper to form a flexible connection structure, which facilitates a certain degree of freedom of yaw as the slag scraper moves with the scraper chain, which is beneficial for conveying ash and slag and dispersing accumulated ash and slag.

[0009] Furthermore, the bottom of the slag scraper is provided with a rectangular groove, and the groove wall is rotatably equipped with a wear-resistant plate. The wear-resistant plate is provided with multiple wear-resistant surfaces and can rotate within the groove wall, allowing for the replacement of different wear-resistant surfaces. During operation, when the slag scraper conveys ash and slag, the wear-resistant plate at the bottom of the scraper will contact the upper surface of the conveying plate, and the wear-resistant plate will gradually convey the ash and slag from the horizontal section of the conveying plate to the inclined section. When the contact surface between the wear-resistant plate and the upper surface of the conveying plate wears to a certain extent, the wear-resistant plate can be controlled to rotate to another angle, i.e., the remaining surface contacts the upper surface of the conveying plate. This ensures a tight fit between the wear-resistant plate and the upper surface of the conveying plate, which is beneficial for conveying ash and slag and avoids the problem of gaps between the wear-resistant plate and the upper surface of the conveying plate, which would make it difficult to convey some ash and slag.

[0010] Furthermore, a round rod is fixedly installed on the wall of the rectangular groove, and a through groove is formed on the inner wall of the round rod. A circular groove is formed inside the through groove. An installation unit is provided on the side wall of the wear-resistant plate. The installation unit is used to install the wear-resistant plate into the through groove and the circular groove.

[0011] Furthermore, the installation unit includes a through rod, which is installed on the side wall of the wear-resistant plate. The wall of the through groove is provided with a transverse groove. An elastic arc seat is installed on the surface of the through rod. The wall of the circular groove is provided with an arc-shaped groove.

[0012] Furthermore, the end of the through rod near the through groove is telescopic, the shape of the end of the through rod is adapted to the shape of the through groove, and the end of the through rod away from the through groove penetrates into the wear-resistant plate.

[0013] During operation, because the end of the through rod near the through groove is telescopic, it is easy for the through rod to drive the elastic arc seat to move along the through groove and the transverse groove, so that the end of the through rod can be disengaged from the transverse groove; while the end of the wear-resistant plate away from the through groove penetrates into the wear-resistant plate, it is easy for the through rod to drive the elastic arc seat to rotate inside the circular groove, so that the elastic arc seat is stuck in the arc-shaped groove inside the circular groove.

[0014] Furthermore, a spring is installed inside the elastic arc seat. The shape of the elastic arc seat matches the shape of the arc-shaped groove. Multiple arc-shaped grooves are designed and arranged in a circumferential array inside the circular groove. During operation, when the wear-resistant plate is installed, that is, when the elastic arc seat moves along the transverse groove and rotates along the wall of the circular groove, the transverse groove and the circular groove will compress the spring inside the elastic arc seat, so that the elastic arc seat is in a compressed state. When the elastic arc seat rotates into one of the circular grooves, under the pressure of the spring inside the elastic arc seat, the elastic arc seat will be tightly locked inside the arc-shaped groove, thus ensuring the stability of the wear-resistant plate when conveying ash and slag.

[0015] Furthermore, the scraper chain is controlled to rotate by multiple drive gears, and each drive gear has a rotating horizontal shaft installed on its side wall. The rotating horizontal shafts are connected by a belt. A cleaning unit is provided on the upper side of the inner wall of the sealing frame. The cleaning unit is used to clean the slag scraper that has moved to the discharge port. During operation, when the scraper chain drives the slag scraper to rotate along the direction of the conveying plate, the scraper chain will be conveyed by the rotation of multiple drive gears. Because multiple drive gears are designed, the stability of the scraper chain during the conveying process can be ensured, which facilitates the movement of the slag scraper along the conveying plate.

[0016] Furthermore, the cleaning unit includes a conical scraper, which is slidably designed on the inner wall of the sealing frame. The conical scraper is positioned above the discharge port and its sliding is controlled by an electric telescopic rod installed inside the sealing frame. During operation, when one set of slag scrapers moves closer to the discharge port and corresponds to the conical scraper, the telescopic end of the electric telescopic rod is controlled to move downward, causing the conical scraper to move downward. Then, the conical scraper contacts the surface of the slag scraper and moves from top to bottom along the slag scraper, causing some highly viscous ash and slag on the surface of the slag scraper to be scraped below the discharge port, thus facilitating the subsequent recycling of the slag scraper.

[0017] Furthermore, each of the rotating horizontal shafts is equipped with a connecting gear at its end, and the inner wall of the discharge rack is rotatably provided with multiple incomplete gears. The incomplete gears mesh with the connecting gears, and the ends of the incomplete gears are connected to the motor output end.

[0018] The beneficial effects of the present invention are as follows: The dry scraper slag discharge device provided by the present invention moves along the transverse groove and rotates along the wall of the circular groove. When the transverse groove and the circular groove move along the transverse groove and rotate along the wall of the circular groove, the transverse groove and the circular groove will squeeze the spring inside the elastic arc seat, so that the elastic arc seat is in a squeezed state. When the elastic arc seat rotates into one of the circular grooves, under the pressure of the spring inside the elastic arc seat, the elastic arc seat will be tightly stuck in the arc-shaped groove, thus ensuring the stability of the wear-resistant plate when conveying ash and slag.

[0019] When the contact surface between the wear-resistant plate and the upper surface of the conveyor plate wears to a certain extent, the wear-resistant plate can be rotated to a different angle, where the remaining surface contacts the upper surface of the conveyor plate. This ensures a tight fit between the wear-resistant plate and the upper surface of the conveyor plate, facilitating the conveying of ash and slag and preventing gaps that could hinder the transport of some ash and slag.

[0020] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is an overall schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the conveyor plate structure in this invention;

[0024] Figure 3 This is a schematic diagram of the slag scraper section in this invention;

[0025] Figure 4 This is a schematic diagram of the wear-resistant plate part of the present invention;

[0026] Figure 5 This is a schematic diagram of the hinge fork structure in this invention;

[0027] Figure 6 This is a schematic diagram of a portion of the through-groove structure in this invention;

[0028] Figure 7 This is a schematic diagram of the circular rod portion of the present invention;

[0029] Figure 8 This is a schematic diagram of the elastic arc seat structure in this invention;

[0030] Figure 9 This is a schematic diagram of the connecting gear part in this invention;

[0031] Figure 10 This is a schematic diagram of the conical scraper section in this invention;

[0032] Figure 11 This is a schematic diagram of the incomplete gear structure in this invention.

[0033] The following are the labeling elements in the figure:

[0034] 1. Discharge rack; 101. Sealing rack; 2. Conveyor plate; 3. Scraper chain; 4. Slag scraper; 5. Cylindrical pin; 501. Hinge; 6. Rectangular groove; 7. Wear-resistant plate; 8. Round rod; 801. Through groove one; 9. Circular groove; 10. Through rod; 11. Transverse groove; 12. Elastic arc seat; 13. Arc groove; 14. Drive gear; 15. Rotating horizontal shaft; 16. Conical scraper; 17. Electric telescopic rod; 18. Connecting gear; 19. Incomplete gear. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0037] like Figures 1 to 11 As shown, the present invention provides a dry scraper slag discharge device, including a discharge frame 1. A conveying plate 2 is fixedly installed inside the discharge frame 1. The conveying plate 2 is divided into a horizontal section and an inclined section. The horizontal section is used to receive slag, and the inclined section is used to drain water and lift slag. A scraper chain 3 is rotatably arranged on the inner wall of the discharge frame 1. The conveying direction of the scraper chain 3 is the same as that of the conveying plate 2. Two sets of scraper chains 3 are arranged symmetrically with respect to the conveying plate 2. Slag scrapers 4 are arranged at equal distances between adjacent scraper chains 3. A sealing frame 101 is arranged above the discharge frame 1. The lower end face of the slag scraper 4 is in contact with the upper end face of the conveying plate 2. A detachable wear-resistant plate 7 is arranged inside the slag scraper 4. The wear-resistant plate 7 is in contact with the upper end face of the conveying plate 2.

[0038] It should be noted that the device in this embodiment of the invention can be directly installed vertically below the slag outlet of the boiler furnace and corresponds to the horizontal plane of the conveying plate 2.

[0039] During operation, the ash and slag produced during boiler production will fall from its slag outlet to the horizontal surface of the conveying plate 2. Then, by controlling the synchronous rotation of two sets of scraper chains 3, the scraper chains 3 drive the slag scraper 4 connected to them to move. Since the lower end face of the wear-resistant plate 7 is in contact with the upper end face of the conveying plate 2, the lower end face of the slag scraper 4 will be in close contact with the upper end face of the conveying plate 2. As the scraper chains 3 are transmitted, the ash and slag can be gradually moved along the horizontal surface of the conveying plate 2 to the inclined side until it is transported to the discharge port at the inclined surface of the conveying plate 2. When the slag is transported from the inclined section, the slag scraper 4 can lift the ash and slag and drain the residual moisture to achieve the dry slag discharge requirement. In addition, a sealing frame 101 is designed to make the entire slag discharge environment a sealed environment to reduce dust emission.

[0040] Meanwhile, the wear-resistant plate 7 is designed as a detachable structure, which allows it to be disassembled when the contact part between the bottom of the wear-resistant plate 7 and the wear-resistant plate 7 is severely worn, thus avoiding gaps between the two and preventing slag leakage during ash conveying. The disassembly and clamping speed is fast and the operation is convenient.

[0041] A cylindrical pin 5 is fixedly installed on the surface of the chain link of the scraper chain 3. A hinge fork 501 is rotatably provided inside the cylindrical pin 5. The slag scraper 4 is fixedly installed on the side wall of the hinge fork 501. During operation, the slag scraper 4 is installed in the cylindrical pin 5 through the hinge fork 501 and connected to the chain link of the scraper chain 3. This allows the slag scraper 4 to form a flexible connection structure, which facilitates the slag scraper 4 to have a certain degree of freedom of yaw during the movement of following the scraper chain 3, which is beneficial for the transportation of ash and slag and the dispersion of accumulated ash and slag.

[0042] The bottom of the slag scraper 4 is provided with a rectangular groove 6. The wear-resistant plate 7 is rotatably designed on the groove wall of the rectangular groove 6. The wear-resistant plate 7 is provided with multiple wear-resistant surfaces. The wear-resistant plate 7 can rotate on the groove wall of the rectangular groove 6 and different wear-resistant surfaces can be replaced.

[0043] During operation, when the slag scraper 4 conveys ash and slag, the wear-resistant plate 7 at the bottom of the slag scraper 4 will contact the upper surface of the conveying plate 2. The wear-resistant plate 7 will gradually convey the ash and slag from the horizontal section of the conveying plate 2 to the inclined section. When the contact surface between the wear-resistant plate 7 and the upper surface of the conveying plate 2 is worn to a certain extent, the wear-resistant plate 7 can be controlled to rotate, so that the wear-resistant plate 7 rotates to other angles, that is, the other surface contacts the upper surface of the conveying plate 2. This ensures that the wear-resistant plate 7 and the upper surface of the conveying plate 2 are tightly fitted, which is beneficial to the conveying of ash and slag and avoids the problem of gaps between the wear-resistant plate 7 and the upper surface of the conveying plate 2, which would make it difficult to convey some ash and slag.

[0044] A round rod 8 is fixedly installed on the wall of the rectangular groove 6. A through groove 801 is opened on the inner wall of the round rod 8. A circular groove 9 is opened inside the through groove 801. An installation unit is provided on the side wall of the wear-resistant plate 7. The installation unit is used to install the wear-resistant plate 7 into the through groove 801 and the circular groove 9.

[0045] During operation, the wear-resistant plate 7 is installed in the through groove 801 and the circular groove 9 through the installation unit. When one of the surfaces of the wear-resistant plate 7 is worn to a greater degree, the installation unit can be controlled to rotate inside the circular groove 9, so that the installation unit drives the wear-resistant plate 7 to rotate to a certain angle, and then the other surfaces of the wear-resistant plate 7 can contact the upper surface of the conveyor plate 2.

[0046] It should be noted that the gap between the wear-resistant plate 7 and the rectangular groove 6 is sufficient to allow the wear-resistant plate 7 to rotate.

[0047] The installation unit includes a through rod 10, which is installed on the side wall of the wear-resistant plate 7. The groove wall of the through groove 801 is provided with a transverse groove 11. An elastic arc seat 12 is installed on the surface of the through rod 10. The groove wall of the circular groove 9 is provided with an arc-shaped groove 13.

[0048] It should be noted that the slag removal equipment in this embodiment of the invention needs to be inspected and the wear-resistant plate 7 replaced after a certain period of use. This certain period can be one month. When the wear-resistant plate 7 is in normal use, the elastic arc seat 12 is located inside the arc groove 13. When the wear-resistant plate 7 needs to be replaced, the operator can manually rotate the through rod 10 so that the through rod 10 drives the elastic arc seat 12 to rotate on the inner wall of the circular groove 9. That is, the through rod 10 drives the elastic arc seat 12 to disengage from the arc groove 13. The through rod 10 and the elastic arc seat 12 are rotated to be on the same horizontal plane as the transverse groove 11. Then the through rod 10 is pulled out to the side away from the through groove 801, so that the through rod 10 is disengaged from the through groove 801. In this way, the wear-resistant plate 7 can be taken out.

[0049] Next, take a new wear-resistant plate 7 and move the through rod 10 on the surface of the new wear-resistant plate 7 along the through groove 801 and the transverse groove 11. Then, when the elastic arc seat 12 moves to one side of the circular groove 9, rotate the through rod 10 so that the elastic arc seat 12 is locked in the arc groove 13 inside the circular groove 9. In this way, the wear-resistant plate 7 can be replaced, which is beneficial to the continued conveying of ash and slag.

[0050] The end of the through rod 10 near the through groove 801 is telescopic, the shape of the end of the through rod 10 is adapted to the shape of the through groove 801, and the end of the through rod 10 away from the through groove 801 penetrates into the wear-resistant plate 7.

[0051] During operation, since the end of the through rod 10 near the through groove 801 is telescopic, the through rod 10 can easily drive the elastic arc seat 12 to move along the through groove 801 and the transverse groove 11, so that the end of the through rod 10 can disengage from the transverse groove 11; while the end of the wear-resistant plate 7 away from the through groove 801 passes through into the wear-resistant plate 7, so that the through rod 10 can easily drive the elastic arc seat 12 to rotate inside the circular groove 9, so that the elastic arc seat 12 is locked in the arc-shaped groove 13 inside the circular groove 9.

[0052] The elastic arc seat 12 is provided with a spring inside. The shape of the elastic arc seat 12 is adapted to the shape of the arc groove 13. Multiple arc grooves 13 are designed and arranged in a circumferential array inside the circular groove 9.

[0053] During operation, when the wear-resistant plate 7 is installed, that is, when the elastic arc seat 12 moves along the transverse groove 11 and rotates along the wall of the circular groove 9, the transverse groove 11 and the circular groove 9 will squeeze the spring inside the elastic arc seat 12, so that the elastic arc seat 12 is in a compressed state; when the elastic arc seat 12 rotates into one of the circular grooves 9, under the pressure of the spring inside the elastic arc seat 12, the elastic arc seat 12 will be tightly stuck inside the arc groove 13, thus ensuring the stability of the wear-resistant plate 7 when conveying ash and slag;

[0054] Moreover, when it is necessary to rotate the wear-resistant plate 7 so that different surfaces of the wear-resistant plate 7 come into contact with the conveyor plate 2, it is only necessary to rotate the through rod 10 again so that the through rod 10 drives the elastic arc seat 12 to separate from one of the arc grooves 13 and drive the wear-resistant plate 7 to rotate. Then the elastic arc seat 12 is locked in the other arc grooves 13.

[0055] It should be noted that the angle between adjacent arc-shaped grooves 13 allows one side of the wear-resistant plate 7 to rotate to the other side, that is, when the elastic arc seat 12 is stuck inside the arc-shaped groove 13, the surface of the wear-resistant plate 7 can just contact the upper end surface of the conveyor plate 2.

[0056] The scraper chain 3 is controlled to rotate by multiple drive gears 14. Each drive gear 14 has a rotating horizontal shaft 15 installed on its side wall. The rotating horizontal shafts 15 are connected by a belt. A cleaning unit is provided on the upper side of the inner wall of the sealing frame 101. The cleaning unit is used to clean the slag scraper 4 that has moved to the discharge port.

[0057] During operation, when the scraper chain 3 drives the slag scraper 4 to rotate along the direction of the conveying plate 2, the scraper chain 3 will be conveyed by the rotation of multiple drive gears 14. The design of multiple drive gears 14 can ensure the stability of the scraper chain 3 during the conveying process, thereby facilitating the movement of the slag scraper 4 along the conveying plate 2.

[0058] The cleaning unit includes a conical scraper 16, which is slidably designed on the inner wall of the sealing frame 101. The conical scraper 16 is located above the discharge port. The conical scraper 16 is controlled to slide by an electric telescopic rod 17, which is installed inside the sealing frame 101.

[0059] During operation, when one set of slag scrapers 4 moves closer to the discharge port and corresponds to the conical scraper 16, the telescopic end of the electric telescopic rod 17 is controlled to move downward, causing the conical scraper 16 to move downward. Then, the conical scraper 16 contacts the surface of the slag scraper 4 and moves from top to bottom along the slag scraper 4, so that some sticky ash and slag on the surface of the slag scraper 4 are scraped to below the discharge port, thus facilitating the subsequent recycling of the slag scraper 4.

[0060] Each of the rotating horizontal shafts 15 is equipped with a connecting gear 18 at its end. The inner wall of the discharge rack 1 is rotatably provided with a plurality of incomplete gears 19. The incomplete gears 19 and the connecting gears 18 are meshed and connected. The end of the incomplete gears 19 is connected to the motor output end.

[0061] During operation, by controlling the rotation of the incomplete gear 19, the incomplete gear 19 will drive the connecting gear 18 meshing with it to rotate, the connecting gear 18 will drive the rotating horizontal shaft 15 to rotate, and the rotating horizontal shaft 15 will drive the drive gear 14 to rotate, thus realizing the transmission of the scraper chain 3.

[0062] When the incomplete gear 19 and the connecting gear 18 rotate from the ratchet engagement point to the disengagement point, the set of slag scrapers 4 also moves to the discharge port and aligns with the conical scraper 16. At this time, the sticky material on the surface of the slag scraper 4 can be scraped off through the above steps. Afterwards, as the incomplete gear 19 rotates, it will mesh with the connecting gear 18 again, that is, the scraper chain 3 will transmit again. This allows the scraper chain 3 to transmit intermittently, which facilitates the cleaning of the surface of the slag scraper 4.

[0063] It should be noted that when the incomplete gear 19 and the connecting gear 18 rotate from the ratchet meshing point to the non-meshing point, the distance that drives the slag scraper 4 to move is exactly the distance between adjacent slag scrapers 4. This allows the slag scrapers 4 at different positions to move intermittently above the discharge port.

[0064] Working principle: The ash and slag produced during boiler production will fall from the slag outlet to the horizontal surface of the conveying plate 2. Then, by controlling the synchronous rotation of two sets of scraper chains 3, the scraper chains 3 drive the slag scraper 4 connected to them to move. Since the lower end face of the slag scraper 4 is in contact with the upper end face of the conveying plate 2, the lower end face of the slag scraper 4 will be in close contact with the upper end face of the conveying plate 2. As the scraper chains 3 are transmitted, the ash and slag can be gradually moved along the horizontal surface of the conveying plate 2 to the inclined side until it is transported to the discharge port at the inclined surface of the conveying plate 2. When the slag is transported from the inclined section, the slag scraper 4 can lift the ash and slag and drain the residual water to achieve the dry slag discharge requirement. In addition, a sealing frame 101 is designed to make the entire slag discharge environment a sealed environment to reduce dust emission.

[0065] When the scraper 4 conveys ash and slag, the wear-resistant plate 7 at the bottom of the scraper 4 contacts the upper surface of the conveying plate 2. The wear-resistant plate 7 gradually conveys the ash and slag from the horizontal section of the conveying plate 2 to the inclined section. When the contact surface between the wear-resistant plate 7 and the upper surface of the conveying plate 2 wears to a certain extent, the wear-resistant plate 7 can be rotated to another angle, i.e., the remaining surface contacts the upper surface of the conveying plate 2. This ensures a tight fit between the wear-resistant plate 7 and the upper surface of the conveying plate 2, which is beneficial for conveying the ash and slag and avoids gaps between the wear-resistant plate 7 and the upper surface of the conveying plate 2, preventing some ash and slag from being difficult to transport. Regarding the transportation issue; when the wear-resistant plate 7 is in normal use, the elastic arc seat 12 is located inside the arc groove 13; when the wear-resistant plate 7 needs to be replaced, the operator can manually rotate the through rod 10, so that the through rod 10 drives the elastic arc seat 12 to rotate on the inner wall of the circular groove 9, that is, the through rod 10 drives the elastic arc seat 12 to disengage from the arc groove 13, and rotate the through rod 10 and the elastic arc seat 12 to be on the same horizontal plane as the transverse groove 11, and then pull the through rod 10 away from the through groove 801, so that the through rod 10 disengages from the through groove 801, and the wear-resistant plate 7 can be taken out.

[0066] Then, take a new wear-resistant plate 7 and move the through rod 10 on the surface of the new wear-resistant plate 7 along the through groove 801 and the transverse groove 11. Then, when the elastic arc seat 12 moves to one side of the circular groove 9, rotate the through rod 10 so that the elastic arc seat 12 is locked in the arc groove 13 inside the circular groove 9. In this way, the wear-resistant plate 7 can be replaced, which is beneficial to the continued conveying of ash and slag.

[0067] Because the end of the through rod 10 near the through groove 801 is telescopic, it can easily drive the elastic arc seat 12 to move along the through groove 801 and the transverse groove 11, so that the end of the through rod 10 can disengage from the transverse groove 11. The end of the wear-resistant plate 7 away from the through groove 801 penetrates into the wear-resistant plate 7, which facilitates the through rod 10 to drive the elastic arc seat 12 to rotate inside the circular groove 9, so that the elastic arc seat 12 is locked in the arc-shaped groove 13 inside the circular groove 9. When the wear-resistant plate 7 is installed, that is, when the elastic arc seat 12 moves along the transverse groove 11 and rotates along the groove wall of the circular groove 9, the transverse groove 11 and the circular groove 9 will squeeze the spring inside the elastic arc seat 12, so that the elastic arc seat 12 is in a compressed state. When the elastic arc seat 12 rotates into one of the circular grooves 9, under the pressure of the spring inside the elastic arc seat 12, the elastic arc seat 12 will be tightly locked in the arc-shaped groove 13, thus ensuring the stability of the wear-resistant plate 7 when conveying ash and slag.

[0068] Furthermore, when it is necessary to rotate the wear-resistant plate 7 so that different surfaces of the wear-resistant plate 7 come into contact with the conveying plate 2, it is only necessary to rotate the through rod 10 again, so that the through rod 10 drives the elastic arc seat 12 to separate from one of the arc grooves 13 and drive the wear-resistant plate 7 to rotate. Then the elastic arc seat 12 is locked in the other arc grooves 13. When one set of slag scrapers 4 moves to the direction close to the discharge port and corresponds to the conical scraper 16, the extension end of the electric telescopic rod 17 is controlled to move down, so that it drives the conical scraper 16 to move down. Then the conical scraper 16 contacts the surface of the slag scraper 4 and moves from top to bottom along the slag scraper 4, so that some sticky ash and slag on the surface of the slag scraper 4 are scraped to the bottom of the discharge port, which facilitates the subsequent recycling of the slag scraper 4.

[0069] By controlling the rotation of the incomplete gear 19, the incomplete gear 19 will drive the connecting gear 18 meshing with it to rotate, the connecting gear 18 will drive the rotating horizontal shaft 15 to rotate, and the rotating horizontal shaft 15 will drive the drive gear 14 to rotate, thus realizing the transmission of the scraper chain 3.

[0070] When the incomplete gear 19 and the connecting gear 18 rotate from the ratchet engagement point to the disengagement point, the set of slag scrapers 4 also moves to the discharge port and aligns with the conical scraper 16. At this time, the sticky material on the surface of the slag scraper 4 can be scraped off through the above steps. Afterwards, as the incomplete gear 19 rotates, it will mesh with the connecting gear 18 again, that is, the scraper chain 3 will transmit again. This allows the scraper chain 3 to transmit intermittently, which facilitates the cleaning of the surface of the slag scraper 4.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dry scraper slag discharge device, characterized in that: The device includes a discharge rack, inside which a conveyor plate is fixedly installed. The conveyor plate is divided into a horizontal section and an inclined section. The horizontal section is used to receive slag, and the inclined section is used to drain water and lift slag. A scraper chain is rotatably installed on the inner wall of the discharge rack. The conveying direction of the scraper chain is the same as that of the conveyor plate. Two sets of scraper chains are arranged symmetrically with respect to the conveyor plate. Slag scrapers are arranged at equal intervals between adjacent scraper chains. A sealing frame is installed above the discharge rack. The lower end face of the slag scraper contacts the upper end face of the conveyor plate. A detachable wear-resistant plate is installed inside the slag scraper, and the wear-resistant plate contacts the upper end face of the conveyor plate. The bottom of the slag scraper is provided with a rectangular groove, and the wear-resistant plate is rotatably mounted on the groove wall of the rectangular groove. The wear-resistant plate is provided with multiple wear-resistant surfaces, and the wear-resistant plate can rotate on the groove wall of the rectangular groove and replace different wear-resistant surfaces. A round rod is fixedly installed on the wall of the rectangular groove. A through groove is opened on the inner wall of the round rod. A circular groove is opened inside the through groove. An installation unit is provided on the side wall of the wear-resistant plate. The installation unit is used to install the wear-resistant plate into the through groove and the circular groove. The installation unit includes a through rod, which is installed on the side wall of the wear-resistant plate. A transverse groove is provided in the groove wall of the through groove one. An elastic arc seat is installed on the surface of the through rod. An arc-shaped groove is provided in the groove wall of the circular groove. The arc-shaped grooves are designed in multiples and arranged in a circumferential array inside the circular groove; A cleaning unit is provided on the upper side of the inner wall of the sealing frame. The cleaning unit is used to clean the slag scraper that has moved to the discharge port. The cleaning unit includes a conical scraper, which is slidably designed on the inner wall of the sealing frame. The conical scraper is positioned above the discharge port and its sliding is controlled by an electric telescopic rod installed inside the sealing frame.

2. The dry scraper slag discharge equipment according to claim 1, characterized in that: A cylindrical pin is fixedly installed on the surface of the scraper chain link, and a hinge fork is rotatably provided inside the cylindrical pin. The slag scraper is fixedly installed on the side wall of the hinge fork.

3. The dry scraper slag discharge device according to claim 1, characterized in that: The end of the through rod near the through groove is telescopic, and the shape of the end of the through rod is adapted to the shape of the through groove. The end of the through rod away from the through groove penetrates into the wear-resistant plate.

4. The dry scraper slag discharge equipment according to claim 1, characterized in that: The elastic arc seat has a spring inside, and the shape of the elastic arc seat is adapted to the shape of the arc groove.

5. The dry scraper slag discharge device according to claim 1, characterized in that: The scraper chain is controlled to rotate by multiple drive gears, and each drive gear has a rotating horizontal shaft installed on its side wall. The rotating horizontal shafts are connected to each other by a belt.

6. The dry scraper slag discharge device according to claim 5, characterized in that: Each of the rotating horizontal shafts is equipped with a connecting gear at its end. The inner wall of the discharge rack is rotatably provided with multiple incomplete gears. The incomplete gears mesh with the connecting gears, and the ends of the incomplete gears are connected to the motor output end.

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