Water-cooling coke breaking grate for combustion boiler

Abstract

The invention is applicable to the technical field of chain grate stoker slag removal, and provides a combustion boiler water-cooling coke breaking grate which comprises a transmission box fixedly mounted at the bottom of a combustion boiler and a chain grate arranged in the transmission box in a transmission manner, sliding parts are evenly arranged between the inner walls of the transmission box in a penetrating and sliding mode. The sliding part comprises a water cooling pipe; a rotating pipe is rotationally arranged on the peripheral side surface of the water-cooling pipe; a spiral groove is formed in the peripheral side surface of the rotating pipe close to one end; a guide ball in sliding fit with the spiral groove is fixed to the end of the L-shaped rod. A scraping plate part matched with the second reciprocating lead screw is arranged between the inner walls of the transmission box in a penetrating and sliding mode. According to the device, through linkage cooperation of all the parts, all the sliding parts rotate synchronously, ash on the chain grate stoker is rotated and loosened, all the stirring parts stir dye and the ash, the two crushing parts rotate synchronously and reversely, the caked ash is crushed, and the functions of preventing coking and automatically removing the slag are improved; and ash is prevented from being coked on the fire grate.

Description

Technical Field

[0001] The invention relates to the technical field of chain grate furnace slag removal, and more particularly to a water-cooled coke-breaking grate of a combustion boiler. Background Art

[0002] The chain-fired boiler is a type of layer-fired furnace with a high degree of mechanization. It is named because its grate is similar to a chain-type crawler. It is a furnace-type combustion equipment that is widely used in industrial boilers. The chain grate is a chain furnace, which is a type of layer-fired furnace and a mechanical combustion grate. Working principle: The chain grate is driven by the reducer to rotate, so that the coal is ignited from the front and burned out at the tail of the boiler. It can improve the combustion efficiency compared with the fixed grate. At the same time, when the chain turns to the bottom, the air cooling can protect the grate from burning. It is a better combustion equipment in the layer-fired furnace.

[0003] Biomass pellet fuel is mainly made of crop straw. Compared with wood pellet fuel, it has great differences in physical properties and chemical composition, resulting in different combustion characteristics. Straw pellet fuel has high ash content, low ash melting point and high alkali metal content. During the combustion process, slagging and serious ash accumulation in the equipment are prone to occur. The existing fixed grate biomass boiler does not have the function of anti-coking and automatic slag removal. The ash and slag are coked on the grate, making it impossible to discharge the ash and slag, affecting the combustion effect. It can only be manually coked and deslagging regularly, which is labor-intensive. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a water-cooled coke-breaking grate for a combustion boiler, wherein the various groups of sliding parts rotate synchronously through the linkage cooperation between the various components to rotate and loosen the ash on the chain grate, and at the same time, the various groups of moving parts move the dye and the ash, and the two groups of crushing parts rotate synchronously in opposite directions to crush the agglomerated ash, thereby improving the anti-coking and automatic slag removal functions, avoiding the coking of ash on the grate, improving the combustion effect, and at the same time improving work efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions: A water-cooled coke-breaking grate for a combustion boiler comprises a transmission box fixedly mounted at the bottom of the combustion boiler and a chain grate arranged inside the transmission box for transmission; a connecting port communicating with the furnace of the combustion boiler is provided on the top of the transmission box; a transmission shaft is symmetrically and rotatably arranged between the inner walls of the transmission box; sprocket wheels meshing with the chain grate for transmission are symmetrically fixed on the peripheral side of the transmission shaft; a first reciprocating screw rod and a second reciprocating screw rod are respectively fixed at both ends of the transmission shaft; a sliding part is uniformly and slidably arranged between the inner walls of the transmission box; the sliding part comprises a sliding part arranged to penetrate and slide between the inner walls of the transmission box water-cooling tube; a rotating tube is rotatably arranged on the side surface of the water-cooling tube; a number of extension rods are evenly fixed on the side surface of the rotating tube; a stirring shaft is fixed on the end of the extension rod; a spiral groove is opened on the side surface of the rotating tube near one end; a number of L-shaped rods are evenly fixed on the side surface of the transmission box; a guide ball that slides with the spiral groove is fixed on the end of the L-shaped rod; a water inlet part is fixedly connected between the same ends of each of the water-cooling tubes, and a drainage part that is compatible with the first reciprocating screw is fixedly connected between the other ends; a scraper part that is compatible with the second reciprocating screw is slidably arranged through the inner walls of the transmission box.

[0006] The present invention is further configured as follows: a feed port is provided on the top of the transmission box; the water inlet portion includes a water inlet pipe; a plurality of first water pipes are evenly connected and arranged on the side surface around the water inlet pipe; the drainage portion includes a drainage pipe; a plurality of second water pipes are evenly connected and arranged on the side surface around the drainage pipe; the first water pipe and the second water pipe end portions are both fixed with a first connecting flange; the second connecting flanges are both fixed at both ends of the water cooling pipe; the two ends of the water cooling pipe are respectively fixedly connected to the corresponding first water pipe and the second water pipe; a servo motor is installed on the side surface of the transmission box; the output end of the servo motor is fixedly connected to one end of the transmission shaft.

[0007] The present invention is further configured as follows: a first guide hole that slides with the water cooling pipe is evenly opened on one inner wall of the transmission box, and a second guide hole that slides with the rotating pipe is evenly opened on the other opposite inner wall; one end of the water inlet pipe and the drain pipe are both sealed; an L-shaped connecting plate is fixed to the sealed end of the drain pipe; a first sliding sleeve that is compatible with the second reciprocating screw is fixed to the bottom surface of the L-shaped connecting plate; and a plurality of crushing teeth are fixed to both ends of the stirring shaft.

[0008] The present invention is further configured as follows: an L-shaped pull plate is fixed to the side surface of the water-cooling tube near one end thereof; a shifting portion is evenly penetrated and rotatably arranged between the inner walls of the transmission box near the feeding port; the shifting portion includes a connecting shaft that is penetrated and rotatably arranged between the inner walls of the transmission box; a plurality of shift forks are evenly fixed to the side surface of the connecting shaft; and baffles are fixed to both ends of the connecting shaft.

[0009] The present invention is further configured as follows: a gear is fixed on the side of the baffle; a plurality of ear seats are evenly fixed on one side of the transmission box; a square rod is fixed on the side of the ear seat; a slider is slidably arranged on the square rod; a return spring sleeved on the square rod is fixed between the slider and the ear seat; a toothed plate meshing with the gear is provided on the bottom surface of the slider; an L-shaped rope guide tube is fixed on the side of the transmission box; a connecting rope passing through the L-shaped rope guide tube is fixedly connected between the toothed plate and the L-shaped pull plate.

[0010] The present invention is further configured as follows: a plurality of axial holes are evenly provided between the inner walls of the transmission box near the ash outlet; a mutually meshing crushing part is fixedly installed between two of the relatively two axial holes; the crushing part includes a conveying pipe; a third connecting flange is symmetrically fixed to the side surface of the conveying pipe; the third connecting flange is fixedly installed on the side surface of the transmission box by fastening bolts; two groups of third water pipes are arranged on the water inlet pipe and the drain pipe in sequence; the two ends of the conveying pipe are respectively connected to the corresponding third water pipes on the water inlet pipe and the drain pipe through hoses; a plurality of crushing wheels are evenly arranged on the side surface of the conveying pipe for rotation; the adjacent crushing wheels on the two crushing parts mesh with each other for transmission; the crushing wheel on one of the conveying pipes meshes with each stirring shaft for transmission.

[0011] The present invention is further configured as follows: the scraper part includes a curved scraper that fits with the chain grate; the interior of the curved scraper is a hollow structure, and both ends of the curved scraper are connected to a first connecting pipe; the water inlet pipe and the drain pipe are connected to a second connecting pipe in turn; the two first connecting pipes are respectively connected to the corresponding second connecting pipes on the water inlet pipe and the drain pipe through hoses; positioning grooves that are compatible with the curved scraper are symmetrically opened on both sides of the inner wall of the transmission box; scrapers are symmetrically fixed on both sides of the inner wall of the transmission box; a second sliding sleeve that is compatible with the first reciprocating screw is fixed to one side of the curved scraper.

[0012] The present invention is further configured as follows: an extension arm is fixed on the top of the second sleeve; a piston rod is fixed on the side of the extension arm; a piston plate is fixed on the end of the piston rod; a piston cylinder slidingly matched with the piston plate is fixed and penetrated between the inner arms of the transmission box near the ash removal port; a water pump is connected to the end of the piston cylinder, and a water supply pipe is connected to the side surface near the end thereof; the water pump is connected to an external cold water tank through a hose; both the water pump and the water supply pipe are provided with a one-way valve; an extension plate is fixed on the side of the transmission box; a water spray pipe connected to the water supply pipe is fixed on the bottom surface of the extension plate; both ends of the water spray pipe are sealed, and nozzles are evenly connected to the side surfaces thereof.

[0013] The advantages of the present invention are: 1. The present invention uses linkage between various components to make each group of sliding parts rotate synchronously, and rotate and loosen the ash on the chain grate. At the same time, each group of moving parts moves the dye and ash, and the two groups of crushing parts rotate synchronously in opposite directions to crush the agglomerated ash, thereby improving the anti-coking and automatic slag removal functions, avoiding the ash from coking on the grate, improving the combustion effect, and at the same time improving the work efficiency.

[0014] 2. The cooling water of the present invention can effectively reduce the discharge temperature of ash, prevent the ash from coking again due to high temperature softening after passing through the crushing part with the grate, and improve the service life of the chain grate of the biomass combustion boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a water-cooled coke-breaking grate in a combustion boiler according to the present invention.

[0016] Figure 2 For the present invention Figure 1 A magnified image of area A.

[0017] Figure 3 For the present invention Figure 1 A schematic diagram of the structure from another angle.

[0018] Figure 4 For the present invention Figure 3 A magnified view of area B.

[0019] Figure 5 For the present invention Figure 1 Schematic diagram of the structure from a frontal perspective.

[0020] Figure 6 For the present invention Figure 5 Magnified view of area C.

[0021] Figure 7 It is a schematic structural diagram of the transmission box of the present invention.

[0022] Figure 8 It is a structural schematic diagram of the transmission box of the present invention from another angle.

[0023] Fig. 9 For the present invention Figure 8 Magnified view of area D.

[0024] Fig.10 It is a schematic structural diagram of the sliding part of the present invention.

[0025] Fig.11 It is a structural schematic diagram of the water inlet part of the present invention.

[0026] Fig.12 It is a schematic structural diagram of the drainage part of the present invention.

[0027] Fig.13 It is a schematic structural diagram of the scraper portion of the present invention.

[0028] Fig.14 It is a schematic structural diagram of the crushing part of the present invention.

[0029] Fig.15 It is a structural schematic diagram of the toggle part of the present invention.

[0030] In the figure: 1. transmission box; 2. chain grate; 3. connecting port; 4. transmission shaft; 5. first reciprocating screw rod; 6. second reciprocating screw rod; 7. sliding part; 8. water cooling pipe; 9. rotating pipe; 10. extension rod; 11. stirring shaft; 12. spiral groove; 13. L-shaped rod; 14. guide ball; 15. water inlet; 16. drainage; 17. scraper; 18. feeding port; 19. water inlet pipe; 20. first water pipe; 21. drainage pipe; 22. second water pipe; 23. first connecting flange; 24. second connecting flange; 25. servo motor; 26. first guide hole; 27. second guide hole; 28. L-shaped connecting plate; 29. ​​first sliding sleeve; 30. crushing tooth; 31. L-shaped pull plate ; 32. toggle part; 33. connecting shaft; 34. fork; 35. baffle; 36. gear; 37. ear seat; 38. square rod; 39. slider; 40. return spring; 41. tooth plate; 42. L-shaped guide rope tube; 43. connecting rope; 44. shaft hole; 45. crushing part; 46. conveying pipe; 47. third connecting flange; 48. third water conveying pipe; 49. crushing wheel; 50. curved scraper; 51. first connecting pipe; 52. second connecting pipe; 53. positioning groove; 54. scraper; 55. second sliding sleeve; 56. extension arm; 57. piston rod; 58. piston plate; 59. piston cylinder; 60. water pumping pipe; 61. water supply pipe; 62. extension plate; 63. water spraying pipe; 64. nozzle. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0033] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0034] For example, see Figure 1-15 , the present invention provides the following technical solutions: A water-cooled coke-breaking grate for a combustion boiler, specifically, a transmission box 1 fixedly installed at the bottom of the combustion boiler and a chain grate 2 arranged inside the transmission box 1 for transmission; a connecting port 3 communicating with the furnace of the combustion boiler is opened on the top of the transmission box 1; a transmission shaft 4 is symmetrically and rotatably arranged between the inner walls of the transmission box 1; sprockets meshing with the chain grate 2 are symmetrically fixed on the sides of the transmission shaft 4; a first reciprocating screw rod 5 and a second reciprocating screw rod 6 are respectively fixed at both ends of the transmission shaft 4; a sliding part 7 is uniformly and slidably arranged between the inner walls of the transmission box 1; the sliding part 7 includes a water-cooling pipe 8 slidably arranged between the inner walls of the transmission box 1; A rotating tube 9 is rotatably arranged on the side surface of the water-cooling tube 8; a plurality of extension rods 10 are evenly fixed on the side surface of the rotating tube 9; a stirring shaft 11 is fixed on the end of the extension rod 10; a spiral groove 12 is opened on the side surface of the rotating tube 9 near one end thereof; a plurality of L-shaped rods 13 are evenly fixed on the side surface of the transmission box 1; a guide ball 14 slidingly matched with the spiral groove 12 is fixed on the end of the L-shaped rod 13; a water inlet portion 15 is fixedly connected between the same ends of each water-cooling tube 8, and a drainage portion 16 compatible with the first reciprocating screw 5 is fixedly connected between the other ends thereof; a scraper portion 17 compatible with the second reciprocating screw 6 is slidably arranged through the inner wall of the transmission box 1.

[0035] Working principle of the first embodiment: Through the linkage between the various components, each group of sliding parts 7 rotates synchronously to loosen the ash on the chain grate 2. At the same time, each group of moving parts 32 moves the dye and ash, and the two groups of crushing parts 45 rotate synchronously in opposite directions to crush the agglomerated ash, thereby improving the anti-coking and automatic slag removal functions, avoiding the ash from coking on the chain grate 2, improving the combustion effect, and improving the work efficiency; the cooling water can effectively reduce the discharge temperature of the ash, prevent the ash from coking again due to high temperature softening after moving through the crushing part 45 with the chain grate 2, and improve the service life of the chain grate 2 of the biomass combustion boiler.

[0036] For example 2, please refer to Figure 1-15, the second embodiment makes the following improvements on the basis of the first embodiment. Specifically, a feeding port 18 is opened on the top of the transmission box 1; the water inlet part 15 includes a water inlet pipe 19; a plurality of first water pipes 20 are evenly connected and arranged on the side of the water inlet pipe 19; the drainage part 16 includes a drainage pipe 21; a plurality of second water pipes 22 are evenly connected and arranged on the side of the drainage pipe 21; the first water pipe 20 and the second water pipe 22 are both fixed with a first connecting flange 23 at the end; the second connecting flange 24 is fixed at both ends of the water cooling pipe 8; the two ends of the water cooling pipe 8 are respectively fixedly connected to the corresponding first water pipe 20 and the second water pipe 22; a servo motor 25 is installed on the side of the transmission box 1; the output end of the servo motor 25 is fixedly connected to one end of the transmission shaft 4.

[0037] The transmission box 1 has an inner wall uniformly provided with a first guide hole 26 that slides with the water cooling tube 8, and another opposite inner wall uniformly provided with a second guide hole 27 that slides with the rotating tube 9; the water inlet pipe 19 and one end of the drain pipe 21 are both sealed; an L-shaped connecting plate 28 is fixed to the sealed end of the drain pipe 21; a first sliding sleeve 29 that matches the second reciprocating screw rod 6 is fixed to the bottom surface of the L-shaped connecting plate 28; and a plurality of crushing teeth 30 are fixed to both ends of the stirring shaft 11.

[0038] An L-shaped pull plate 31 is fixed to the side surface of the water-cooling tube 8 near one end thereof; a toggle portion 32 is evenly penetrated and rotatably arranged between the inner walls of the transmission case 1 near the feeding port 18; the toggle portion 32 includes a connecting shaft 33 that is penetrated and rotatably arranged between the inner walls of the transmission case 1; a number of shift forks 34 are evenly fixed to the side surface of the connecting shaft 33; baffles 35 are fixed to both ends of the connecting shaft 33.

[0039] A gear 36 is fixed to the side of a baffle 35; a plurality of ear seats 37 are evenly fixed to one side of the transmission box 1; a square rod 38 is fixed to the side of the ear seat 37; a slider 39 is slidably arranged on the square rod 38; a return spring 40 sleeved on the square rod 38 is fixed between the slider 39 and the ear seat 37; a tooth plate 41 meshing with the gear 36 is provided on the bottom surface of the slider 39; an L-shaped guide rope tube 42 is fixedly installed on the side of the transmission box 1; a connecting rope 43 passing through the L-shaped guide rope tube 42 is fixedly connected between the tooth plate 41 and the L-shaped pull plate 31.

[0040] A plurality of axial holes 44 are evenly provided between the inner walls of the transmission box 1 near the ash outlet; a crushing part 45 engaging with each other is fixedly installed between two relative axial holes 44; the crushing part 45 includes a conveying pipe 46; a third connecting flange 47 is symmetrically fixed on the side surface of the conveying pipe 46; the third connecting flange 47 is fixedly installed on the side surface of the transmission box 1 by fastening bolts; two groups of third water pipes 48 are sequentially connected and arranged on the water inlet pipe 19 and the drainage pipe 21; the two ends of the conveying pipe 46 are respectively connected to the corresponding third water pipes 48 on the water inlet pipe 19 and the drainage pipe 21 through hoses.

[0041] A plurality of crushing wheels 49 are evenly rotated around the side surface of the conveying pipe 46; the adjacent crushing wheels 49 on the two crushing parts 45 are meshed and driven with each other; and the crushing wheel 49 on one conveying pipe 46 is meshed and driven with each stirring shaft 11.

[0042] Working principle of the second embodiment: Fuel is added to the transmission box 1 through the feed port 18, and the fuel is slowly transported through the chain grate 2. The servo motor 25 is controlled to start and cooperate with the reducer to drive the corresponding transmission shaft 4 to rotate slowly. The chain grate 2 is driven to rotate slowly synchronously through the sprocket, thereby driving the first reciprocating screw 5 to rotate slowly, and then driving the water-cooling tube 8 in the sliding part 7 together with the rotating tube 9 to synchronously slide back and forth along the inner wall of the transmission box 1. During the sliding process, the rotating tube 9 is driven to reciprocate around the water-cooling tube 8 under the guiding force of the guide ball 14, so that each group of stirring shafts 11 rotates synchronously during the sliding process. During the sliding process, the crushing teeth 30 at the end of the rotating tube 9 crush the agglomerated ash. At the same time, the rotating rotating tube 9 rotates and stirs the ash during the transportation process to loosen it. At the same time, the rotating rotating tube 9 crushes the ash during transportation.

[0043] A toggle portion 32 is evenly provided between the inner walls of the transmission box 1 near the feeding port 18, such as Figure 2 As shown, during the outward sliding of the sliding portion 7, the connecting rope 43 is pulled, driving the tooth plate 41 and the slider 39 to slide synchronously along the square rod 38, and the reset spring 40 is stretched, thereby driving the gear 36 to rotate clockwise, thereby driving the corresponding groups of forks 34 to rotate synchronously; when the sliding portion 7 slides inward, the connecting rope 43 is loosened, and under the elastic reset force of the reset spring 40, the gear 36 is driven to rotate counterclockwise, thereby driving the groups of forks 34 to rotate synchronously in the opposite direction and reset; in summary, during the reciprocating sliding of the sliding portion 7, the fork 34 is periodically reversed, and the fuel and ash near the feed port 18 and inside the furnace are moved to avoid the bottom fuel from being fully burned. At the same time, the agglomerated ash is moved to improve the combustion efficiency of the fuel, and the agglomerated ash is initially moved and broken.

[0044] By arranging two sets of mutually meshing crushing parts 45 between the inner walls of the transmission box 1 near the ash outlet, as shown in FIG. Figure 6As shown, during the reciprocating rotation of the rotating tube 9 on the corresponding sliding part 7, each group of corresponding stirring shafts 11 is driven to rotate back and forth, thereby driving a group of crushing parts 45 meshing therewith to rotate back and forth, and then driving another group of crushing parts 45 to rotate back and forth, and the two groups of crushing parts 45 rotate synchronously in opposite directions. When the sliding part 7 rotates clockwise, its adjacent crushing parts 45 rotate counterclockwise, and the other group of crushing parts 45 rotates clockwise to crush the ash agglomerated on the top. When the sliding part 7 rotates counterclockwise, its adjacent crushing parts 45 rotate clockwise, and the other group of crushing parts 45 rotates counterclockwise to crush the ash agglomerated on the bottom, thereby further improving the effect of crushing the agglomerated slag.

[0045] The cooling water is pumped into the water inlet pipe 19 through an external water pump, and then respectively sent to the corresponding water-cooling pipe 8, curved scraper 50 and conveying pipe 46, so as to achieve cooling treatment of each component and avoid overheating damage. At the same time, the cooling water can effectively reduce the discharge temperature of the ash, prevent the ash from softening and coking again due to high temperature after moving through the crushing part 45 with the chain grate 2, and improve the service life of the chain grate 2 of the biomass combustion boiler.

[0046] For example 3, please refer to Figure 1-15 , this third embodiment makes the following improvements on the basis of the second embodiment. Specifically, the scraper part 17 includes a curved scraper 50 that fits with the chain grate 2; the curved scraper 50 has a hollow structure inside, and both ends thereof are connected with a first connecting pipe 51; the water inlet pipe 19 and the drain pipe 21 are connected with a second connecting pipe 52 in turn; the two first connecting pipes 51 are respectively connected to the corresponding second connecting pipes 52 on the water inlet pipe 19 and the drain pipe 21 through hoses; positioning grooves 53 that are compatible with the curved scraper 50 are symmetrically opened on both sides of the inner wall of the transmission box 1; scrapers 54 are symmetrically fixed on both sides of the inner wall of the transmission box 1; a second sliding sleeve 55 that is compatible with the first reciprocating screw rod 5 is fixed on one side of the curved scraper 50.

[0047] An extension arm 56 is fixed to the top of the second sliding sleeve 55; a piston rod 57 is fixed to the side of the extension arm 56; a piston plate 58 is fixed to the end of the piston rod 57; a piston cylinder 59 that slides with the piston plate 58 is fixed and penetrates between the inner arms of the transmission box 1 near the ash removal port; a water pumping pipe 60 is connected to the end of the piston cylinder 59, and a water supply pipe 61 is connected to the side surface near the end thereof; the water pumping pipe 60 is connected to the external cold water tank through a hose; both the water pumping pipe 60 and the water supply pipe 61 are provided with a one-way valve; an extension plate 62 is fixed to the side of the transmission box 1; a water spraying pipe 63 that is connected to the water supply pipe 61 is fixed to the bottom surface of the extension plate 62; both ends of the water spraying pipe 63 are sealed, and nozzles 64 are evenly connected to the side surfaces thereof.

[0048] Working principle of the third embodiment: The reciprocating screw is a form of a stereo cam pair, which is represented by two thread grooves with the same pitch and opposite rotation directions. The two ends are connected by a transition curve. Through the rotation of the reciprocating screw, the side of the spiral groove 12 pushes the slider 39 placed in the spiral groove 12 to make axial reciprocating motion. The first sliding sleeve 29 is provided with a first slider adapted to the first reciprocating screw 5, and the second sliding sleeve 55 is provided with a second slider adapted to the second reciprocating screw 6.

[0049] The control starts the servo motor 25 and cooperates with the reducer to drive the corresponding transmission shaft 4 to rotate slowly, and drives the chain grate 2 to rotate slowly synchronously through the sprocket. The residual ash adhered to the surface of the rotating chain grate 2 is scraped off by the curved scraper 50, further improving the scraping effect of the ash; the slow rotation of the transmission shaft 4 drives the second reciprocating screw 6 to rotate slowly, and then drives the scraper part 17 to slide back and forth, so that the curved scraper 50 slides back and forth along the corresponding positioning groove 53. During the reciprocating sliding of the curved scraper 50, the residual ash on its surface is scraped off by the scraper 54, thereby improving the service life of the curved scraper 50.

[0050] By setting a one-way valve on the water pumping pipe 60, the cold water in the external cold water tank can only be pumped into the piston cylinder 59 through the water pumping pipe 60. By setting a one-way valve on the water supply pipe 61, the cold water in the piston cylinder 59 can only be delivered to the water spraying pipe 63 through the water supply pipe 61. During the reciprocating sliding process of the scraper part 17, the piston plate 58 is driven to slide reciprocatingly along the inner wall of the piston cylinder 59, so that a certain amount of cold water is periodically delivered into the water spraying pipe 63 and sprayed to the ash outlet through the nozzle 64, so as to cool down and reduce dust at the ash outlet and prevent high-temperature dust from floating in the air.

[0051] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0055] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A water-cooled coke-breaking grate for a combustion boiler, comprising a transmission box (1) fixedly mounted at the bottom of the combustion boiler and a chain grate (2) arranged inside the transmission box (1); characterized in that: The transmission box (1) has a communication port (3) on the top thereof which is in communication with the furnace of the combustion boiler; a transmission shaft (4) is symmetrically and rotatably arranged through the inner wall of the transmission box (1); sprocket wheels which mesh with the chain grate (2) for transmission are symmetrically fixed on the side surfaces of the transmission shaft (4); A first reciprocating screw rod (5) and a second reciprocating screw rod (6) are respectively fixed to both ends of the transmission shaft (4); a sliding portion (7) is evenly and slidably provided through the inner wall of the transmission box (1); The sliding part (7) comprises a water cooling tube (8) which penetrates and slides between the inner walls of the transmission box (1); a rotating tube (9) is rotatably arranged on the side surface of the water cooling tube (8); a plurality of extension rods (10) are evenly fixed on the side surface of the rotating tube (9); and a stirring shaft (11) is fixed at the end of the extension rod (10); A spiral groove (12) is formed on the side surface of the rotating tube (9) near one end thereof; a plurality of L-shaped rods (13) are evenly fixed on the side surface of the transmission box (1); and a guide ball (14) is fixed at the end of each L-shaped rod (13) and is slidably engaged with the spiral groove (12); A water inlet portion (15) is fixedly connected between the same ends of the water cooling pipes (8), and a drainage portion (16) adapted to the first reciprocating screw (5) is fixedly connected between the other ends; a scraper portion (17) adapted to the second reciprocating screw (6) is slidably provided through the inner wall of the transmission box (1).

2. A water-cooled coke-breaking grate for a combustion boiler according to claim 1, characterized in that: The transmission box (1) is provided with a feeding port (18) at the top; the water inlet portion (15) comprises a water inlet pipe (19); a plurality of first water pipes (20) are evenly connected and arranged on the side surface of the water inlet pipe (19); the drainage portion (16) comprises a drainage pipe (21); a plurality of second water pipes (22) are evenly connected and arranged on the side surface of the drainage pipe (21); first connecting flanges (23) are fixed to the ends of the first water pipe (20) and the second water pipe (22); second connecting flanges (24) are fixed to both ends of the water cooling pipe (8); both ends of the water cooling pipe (8) are fixedly connected to the corresponding first water pipe (20) and the second water pipe (22); a servo motor (25) is installed on the side surface of the transmission box (1); the output end of the servo motor (25) is fixedly connected to one end of the transmission shaft (4).

3. A water-cooled coke-breaking grate for a combustion boiler according to claim 2, characterized in that: The transmission box (1) has an inner wall uniformly provided with a first guide hole (26) for slidingly cooperating with the water cooling tube (8), and another inner wall thereof is uniformly provided with a second guide hole (27) for slidingly cooperating with the rotating tube (9); One end of the water inlet pipe (19) and the drain pipe (21) are both sealed; an L-shaped connecting plate (28) is fixed to the sealed end of the drain pipe (21); a first sliding sleeve (29) adapted to the second reciprocating screw rod (6) is fixed to the bottom surface of the L-shaped connecting plate (28); and a plurality of crushing teeth (30) are fixed to both ends of the stirring shaft (11).

4. A water-cooled coke-breaking grate for a combustion boiler according to claim 3, characterized in that: An L-shaped pull plate (31) is fixed to the side surface of the water cooling tube (8) near one end thereof; a shifting portion (32) is evenly and rotatably provided between the inner walls of the transmission box (1) near the feeding port (18); the shifting portion (32) comprises a connecting shaft (33) which is rotatably provided between the inner walls of the transmission box (1); a plurality of shifting forks (34) are evenly fixed to the side surface of the connecting shaft (33); and baffles (35) are fixed to both ends of the connecting shaft (33).

5. A water-cooled coke-breaking grate for a combustion boiler according to claim 4, characterized in that: A gear (36) is fixed to the side of the baffle (35); a plurality of ear seats (37) are evenly fixed to one side of the transmission box (1); a square rod (38) is fixed to the side of the ear seat (37); a slider (39) is slidably arranged on the square rod (38); a return spring (40) sleeved on the square rod (38) is fixed between the slider (39) and the ear seat (37); a tooth plate (41) meshing with the gear (36) is provided on the bottom surface of the slider (39); an L-shaped rope guide tube (42) is fixed to the side of the transmission box (1); a connecting rope (43) passing through the L-shaped rope guide tube (42) is fixedly connected between the tooth plate (41) and the L-shaped pull plate (31).

6. A water-cooled coke-breaking grate for a combustion boiler according to claim 5, characterized in that: A plurality of shaft holes (44) are evenly formed between the inner walls of the transmission box (1) near the ash outlet; a crushing part (45) meshing with each other is fixedly installed between two of the shaft holes (44); the crushing part (45) comprises a conveying pipe (46); a third connecting flange (47) is symmetrically fixed to the side surface of the conveying pipe (46); the third connecting flange (47) is fixedly installed on the side surface of the transmission box (1) by means of fastening bolts; The water inlet pipe (19) and the drainage pipe (21) are both connected in sequence with two sets of third water delivery pipes (48); both ends of the delivery pipe (46) are respectively connected to the corresponding third water delivery pipes (48) on the water inlet pipe (19) and the drainage pipe (21) through hoses; A plurality of crushing wheels (49) are evenly rotated on the circumferential side of the conveying pipe (46); adjacent crushing wheels (49) on the two crushing parts (45) mesh with each other for transmission; and a crushing wheel (49) on one conveying pipe (46) and each stirring shaft (11) mesh with each other for transmission.

7. A water-cooled coke-breaking grate for a combustion boiler according to claim 6, characterized in that: The scraper portion (17) comprises a curved scraper (50) which is fitted with the chain grate (2); the curved scraper (50) is hollow in structure, and both ends thereof are connected with a first connecting pipe (51); the water inlet pipe (19) and the drain pipe (21) are connected with a second connecting pipe (52) in sequence; the two first connecting pipes (51) are respectively connected with the corresponding second connecting pipes (52) on the water inlet pipe (19) and the drain pipe (21) through a hose; positioning grooves (53) which are compatible with the curved scraper (50) are symmetrically provided on both sides of the inner wall of the transmission box (1); scrapers (54) are symmetrically fixed on both sides of the inner wall of the transmission box (1); and a second sliding sleeve (55) which is compatible with the first reciprocating screw (5) is fixed on one side of the curved scraper (50).

8. A water-cooled coke-breaking grate for a combustion boiler according to claim 7, characterized in that: An extension arm (56) is fixed to the top of the second sliding sleeve (55); a piston rod (57) is fixed to the side of the extension arm (56); a piston plate (58) is fixed to the end of the piston rod (57); a piston cylinder (59) that slidably cooperates with the piston plate (58) is fixed through and between the inner arms of the transmission box (1) near the ash removal port; The end of the piston cylinder (59) is connected to a water extraction pipe (60), and a water supply pipe (61) is connected to the side surface thereof near the end thereof; the water extraction pipe (60) is connected to an external cold water tank via a hose; both the water extraction pipe (60) and the water supply pipe (61) are provided with a one-way valve; an extension plate (62) is fixed to the side of the transmission case (1); a water spray pipe (63) connected to the water supply pipe (61) is fixed to the bottom surface of the extension plate (62); both ends of the water spray pipe (63) are sealed, and nozzles (64) are evenly connected to the side surface thereof.

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