A rice husk combustion suspension furnace with automatic ash cleaning function

Abstract

The present invention relates to the technical field of hot blast furnaces, and provides a rice husk burning suspension furnace with automatic ash cleaning function, comprising a furnace body, an ash hopper is provided at the bottom of the furnace body, an ash lowering pipe is provided at the bottom of the ash hopper, and further comprising: an inverted plate, the inverted plate is integrally fixed to the inner bottom of the lower ash pipe; an ash discharge box, the ash discharge box is integrally fixed to the bottom of the lower ash pipe, the ash discharge box is larger than the lower ash pipe and the two are eccentrically distributed, and one end of the lower ash pipe and the ash discharge box are also tangentially matched; an ash cleaning component, the ash cleaning component is arranged between the lower ash pipe, the inverted plate and the ash discharge box, and the rice husk ash in the ash hopper is discharged through the ash cleaning component; the ash cleaning effect can be ensured while reducing the load through the arranged ash cleaning component, and the bottom of the lower ash pipe is also provided with a blocking function, and the surface of the ash discharge tray and the ash discharge plate after ash delivery can be cleaned through the arranged cleaning component, so that the adhered rice husk ash is also removed, thereby improving the ash cleaning completeness.

Description

Technical Field

[0001] The invention relates to the technical field of hot blast furnaces, and more specifically, to a rice husk combustion suspension furnace with an automatic ash cleaning function. Background Art

[0002] A hot blast furnace is a thermal power machine that generates high-temperature flue gas by burning combustible media in a combustion chamber, and stores heat through heat storage bricks. When the heat storage bricks are fully heated, the cold air passes through the heat storage bricks and is heated and sent out. A rice husk suspension combustion hot blast furnace is a hot blast furnace that uses rice husk as a combustion medium. The rice husk is directly sent into the furnace of the hot blast furnace through a pipeline through pneumatic conveying, and is suspended and burned in the furnace, so that the rice husk burns fully. Because it uses biomass fuels such as rice husks and sawdust, it is cheap, has low fuel cost, and is environmentally friendly, so it has been widely used;

[0003] First, after the rice husk is burned in the suspension furnace, the rice husk ash will be automatically collected in the ash hopper. However, the discharge space at the lower end of the ash hopper is relatively narrow. After the ash hopper collects a lot of rice husk ash, the lower end will be compressed, which may cause blockage during cleaning.

[0004] Secondly, after the rice husk ash is taken out of the suspension furnace, it will be processed according to different usage methods, such as separating coarse and fine particles. The coarse particles are generally used for soil improvement, covering materials, insulation materials, etc., and the fine particles are generally used for fertilizers, adsorbents, abrasives, etc. In the prior art, additional screening equipment is required for separation, which has high equipment usage and labor costs.

[0005] After checking the publication (announcement) number: CN112013412B, a self-service cleaning device for a rice husk suspension combustion hot blast furnace is disclosed. This technology discloses "a shell that penetrates from top to bottom, an ash receiving pouring plate that is horizontally distributed in the shell and hinged in the middle to the inner wall of the shell, and an auxiliary cleaning component that is located below the ash receiving pouring plate and cleans the ash receiving plate surface of the ash receiving pouring plate in a horizontal sliding manner. The outer wall of the shell is provided with a driving component that drives the ash receiving pouring plate and the auxiliary cleaning component to move in coordination; the ash receiving pouring plate is connected with a self-locking component, and the self-locking component is connected to the driving component" and other technical solutions, and has "through the ash receiving pouring plate, cleaning scraper, self-locking component, and driving component, the present invention, on the basis of having the function of automatic ash cleaning, will also clean and scrape the ash adhering to the ash receiving plate surface of the ash receiving pouring plate after each dumping of ash, effectively solving the problem of reduced service life and cleaning efficiency of the ash receiving pouring plate due to excessive accumulation of ash" and other technical effects;

[0006] First, when the device is cleaning, the rectangular "ash receiving and pouring plate" needs to be rotated 180 degrees. In actual use, it is found that sufficient turning space needs to be provided in the suspension furnace, and at the same time, it cannot interfere with the collection and removal of rice husk ash, which will increase the volume of the entire cleaning mechanism.

[0007] Secondly, the "ash receiving and pouring plate" is driven by the central shaft during rotation. There is also a full load of rice husk ash on the "ash receiving and pouring plate", and the rice husk ash on one side of the central shaft needs to be lifted up to a certain height before it can be poured out from the other side. Therefore, the load on the driving motor and the central shaft is very large, which can easily cause the ash receiving and pouring plate and the central shaft to bend and deform. Due to the large load, each component will also accelerate wear, and the maintenance cost is high;

[0008] In order to solve the above problems, the present application proposes a rice husk combustion suspension furnace with automatic ash cleaning function. Summary of the invention

[0009] The purpose of the present invention is to provide a rice husk combustion suspension furnace with automatic ash cleaning function to solve the problems in the prior art.

[0010] The purpose of the present invention can be achieved by the following technical solutions:

[0011] A rice husk combustion suspension furnace with automatic ash cleaning function, comprising a furnace body, an ash hopper is provided at the bottom of the furnace body, an ash discharge pipe is provided at the bottom of the ash hopper, and further comprising:

[0012] An inverted plate, the inverted plate is integrally fixed to the inner bottom of the lower ash pipe;

[0013] An ash discharge box, the ash discharge box is integrally fixed to the bottom of the lower ash pipe, the ash discharge box is larger than the lower ash pipe and the two are eccentrically distributed, and one end of the lower ash pipe and the ash discharge box are tangentially matched;

[0014] A dust cleaning component is provided between the ash lowering pipe, the inverting plate and the ash discharge box. The rice husk ash in the ash hopper is discharged through the dust cleaning component. The dust cleaning component includes:

[0015] An ash discharge tray, the ash discharge tray being rotatably mounted inside the ash discharge box;

[0016] Ash discharge plates, the ash discharge plates are evenly distributed around the outer periphery of the ash discharge tray, and the ash discharge tray and the upper part of the ash discharge plates are in contact with the bottom of the inverted plate;

[0017] An ash discharge port, which is formed between the ash discharge pipe and the inverted plate and is also located above the rotation path of the ash discharge plate;

[0018] An ash drop opening is provided in the ash discharge box and is diagonally distributed with the ash lower opening and is also located below the rotation path of the ash discharge plate;

[0019] A servo motor, wherein the servo motor is mounted at the bottom of the ash discharge box and the output end is fixed to the ash discharge tray;

[0020] A cleaning component is installed between the ash discharge box and the servo motor, and the surfaces of the ash discharge tray and the ash discharge plate after the ash is delivered are cleaned by the cleaning component under the action of the servo motor;

[0021] An anti-blocking component is installed between the ash discharging tray and the inverted plate. The anti-blocking component can be rotated and reciprocated along the axial direction by a servo motor. After the anti-blocking component rotates, the ash hopper can be prevented from being blocked;

[0022] The screening component is installed at the lower end of the ash hopper and can receive and screen the rice husk ash discharged from the cleaning component. The screening component realizes screening through the power of the servo motor.

[0023] In the above technical scheme, there are multiple ash discharge plates, and the space formed by each ash discharge plate, ash discharge tray and ash discharge box is limited. Therefore, the parts will not be deformed due to the large amount of ash discharged at a single time, and the ash discharge speed can also be adjusted by controlling the rotation speed of the servo motor, thereby ensuring reliable and efficient ash discharge. The servo motor can simultaneously realize the functions of the cleaning component, the cleaning component, the anti-blocking component and the screening component. In order to ensure the driving reliability, a large torque motor can be used or a transmission can be used to increase the torque, thereby ensuring the synchronous drive of the servo motor. This type of synchronous drive method has a high degree of coordination and is easy to control, and the coordination of each component is also very close.

[0024] The ash cleaning component also includes a guide tube fixed at the bottom of the ash discharge box and communicated with the ash drop port, the bottom of the guide tube is connected to an ash discharge pipe, and the ash discharge tray and ash discharge plate rotate between the inverted plate and the ash discharge box through a servo motor.

[0025] In the above technical solution, the discharged rice husk ash is guided to the upper end of the screen through a guide tube and an ash discharge pipe, and is directly screened after being discharged, without the need for additional screening equipment and transfer work, thereby reducing costs and increasing efficiency.

[0026] The cleaning component includes a cleaning port opened at the lower end of the ash discharge box and located on the rotation path of the ash discharge plate, and a shield fixed to the outside of the ash discharge box and communicating with the interior thereof through the cleaning port. The bottom of the shield is connected to a return tube, and the return tube is communicated with the side of the ash discharge pipe.

[0027] In the above technical solution, the cleaning port and the protective cover are arranged diagonally. When the ash discharge tray does not rotate, the ash discharge plate will completely block the space between the two. The bottom of the ash hopper can be blocked without external sealing parts. After the ash discharge tray and the ash discharge plate are rotated, the cleaning port and the protective cover can be connected to ensure the reliability of the cleaning work.

[0028] A rotating disc brush is provided inside the protective cover, and the bristles of the disc brush are located in the ash discharge box through the ash cleaning port, and the bristles of the disc brush are also in contact with the ash discharge tray and the ash discharge plate. The cross-section of the ash discharge plate is a "V" shape that can fully contact the bristles.

[0029] In the above technical solution, by setting the cross-section of the dust removal plate into a "V" shape, after the disc brush is involved, the external bristles can simultaneously and fully contact the two surfaces of the "V" shape, thereby ensuring the cleaning effect of the dust removal plate without interfering with the normal use of the two.

[0030] It also includes two synchronous wheels, a synchronous belt is arranged between the two synchronous wheels, one of the synchronous wheels is fixed to the output end of the servo motor, and two mutually meshing bevel gears are arranged between one end of the other synchronous wheel and one end of the disc brush. The disc brush is driven by the servo motor through the synchronous wheel, the synchronous belt and the bevel gear and then rotates in the protective cover.

[0031] In the above technical solution, through two synchronous wheels, a synchronous belt and two bevel gears, the disc brush can be driven to rotate without affecting the servo motor driving the cleaning components and anti-blocking components, thereby linking the cleaning work of the cleaning components with the cleaning work of the disc brush, and having the advantages of high structural coordination and good controllability.

[0032] The anti-blocking component includes a stepped rod and a stirring rod fixed on the upper end of the stepped rod, the upper end of the stepped rod is eccentrically distributed with the lower ash pipe, and the lower end of the stepped rod penetrates the inverted plate and is movably connected with the ash discharge tray.

[0033] In the above technical solution, by arranging the upper and lower ends of the stepped rod to be eccentrically distributed, the coverage space of the upper end of the stepped rod can be increased when the stepped rod rotates, and the length of the stepped rod can be appropriately reduced, thereby ensuring the anti-blocking effect while controlling the structural volume.

[0034] A polygonal sliding block is fixed at the bottom of the stepped rod, a polygonal sliding groove slidably matched with the polygonal sliding block is opened inside the ash discharge tray, a reciprocating guide sleeve is fixed to the upper end of the inverted plate and is sleeved on the outside of the stepped rod, and a ball bearing is provided at the sleeved portion between the stepped rod and the reciprocating guide sleeve.

[0035] In the above technical solution, during the rotation of the stepped rod, the ball moves along the internal path of the reciprocating guide sleeve. A wavy and closed annular track is provided inside the reciprocating guide sleeve. The polygonal slider and the polygonal slide groove can not only provide the axial movement generated by the cooperation of the ball and the reciprocating guide sleeve, but also transmit the rotational force to the stepped rod, so that the stepped rod and the stirring rod move in a state of circumferential rotation and axial extension and contraction, thereby effectively avoiding blockage at the bottom of the ash hopper.

[0036] The screening component includes a connecting cover fixed at the bottom of the ash hopper and a sieve plate located in the connecting cover, a screen is arranged on the sieve plate, symmetrical sliding rods are arranged on both sides of the sieve plate, the sliding rods slide in the connecting cover and a return spring is arranged between the two, an eccentric wheel is fixed at the bottom of the synchronous wheel meshing with the bevel gear, and the eccentric wheel is located on the side of the sieve plate and is tangent to it.

[0037] In the above technical solution, the reset spring plays a reset role. In order to ensure the reliability of reciprocating screening, an adapter block that cooperates with the eccentric wheel needs to be set on the side of the screen plate. The adapter block and the eccentric wheel are both made of smooth and wear-resistant materials, and then cooperate with the reset spring to realize the screening action of the screen plate, thereby ensuring the reliable screening of rice husk ash.

[0038] The sieve plate is arranged in an inclined manner and the sieve is located at the upper part of the inclination, and the sieve is also located directly below the ash discharge pipe.

[0039] In the above technical solution, the screen is located at the upper part, which can timely screen the rice husk ash particles; the ash discharge pipe is located just above the screen, which can quickly screen the rice husk ash falling from the ash discharge pipe.

[0040] A first discharge port located at the lower end in front of the screen plate is fixed obliquely at the bottom of one side of the connection cover, and a second discharge port located directly below the screen is fixed obliquely at the bottom of the other side of the connection cover.

[0041] In the above technical solution, the first discharge port and the second discharge port respectively receive particles of different diameters at the upper and lower ends of the screen plate, and then guide them out in two directions to facilitate collection by an external collection frame.

[0042] Beneficial effects of the present invention:

[0043] The present invention uses only one single servo motor as the driving end to realize the ash discharge function of the ash cleaning component, the cleaning function of the cleaning component, the anti-blocking function of the anti-blocking component, and the screening function of the screening component. Multiple components are linked simultaneously and realize different functions, thereby ensuring the efficiency and completeness of ash cleaning, and at the same time, can also play a role in screening rice husk ash.

[0044] The present invention can disperse and send out the rice husk ash in the furnace body by arranging the ash discharging plate and the ash discharging plate in the ash cleaning component, effectively reducing the load of the ash cleaning component, thereby ensuring the durability of each component in the ash cleaning component. At the same time, the ash discharging plate and the ash discharging plate cooperate with the ash discharging box to form a blockage at the bottom of the ash lower pipe when the ash is not cleaned.

[0045] The present invention can clean the surface of the ash discharge tray and the ash discharge plate after the ash is delivered by arranging a cleaning component, and also collect the adhesive and residual dust, thereby ensuring the collection effect, and at the same time, the load of the driving part will not be increased due to the residual adhesion;

[0046] The present invention provides a stepped rod with eccentric ends and a stirring rod on the stepped rod, which has the advantages of ensuring the stirring effect while controlling the volume. Secondly, the stepped rod also reciprocates along the axial direction under the action of the ball and the reciprocating guide sleeve while rotating, which effectively improves the anti-blocking effect.

[0047] The present invention can automatically screen the rice husk ash while taking it out by arranging a screening component, which is convenient for separating coarse and fine rice husk ash particles, plays a pretreatment role, and is convenient for the continued utilization of the rice husk ash. There is no need to use additional screening equipment, and there is no need for additional manual transfer, which reduces costs while ensuring the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0049] Figure 1 It is a structural schematic diagram of the main view of the present invention;

[0050] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0051] Figure 3 It is a schematic diagram of the structure of the present invention in a partially half-sectioned front view;

[0052] Figure 4 It is a partially enlarged structural schematic diagram of the dust cleaning part of the present invention;

[0053] Figure 5 It is a schematic diagram of the structure of the partially decomposed and cut-away cleaning part of the present invention;

[0054] Figure 6 for Figure 5 Schematic diagram of the structure viewed from above;

[0055] Figure 7 A schematic diagram of a half-section structure of a screening component in the present invention;

[0056] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0057] In the figure: 1. furnace body; 2. ash removal component; 3. cleaning component; 4. anti-blocking component; 5. screening component;

[0058] 11. Ash hopper; 12. Ash discharge pipe; 13. Inverter plate; 14. Ash discharge box;

[0059] 21. Ash discharge tray; 22. Ash discharge plate; 23. Ash discharge port; 24. Ash drop port; 25. Guide tube; 26. Ash discharge pipe; 27. Servo motor;

[0060] 31. Cleaning port; 32. Protective cover; 33. Reflux cylinder; 34. Disc brush; 35. Synchronous wheel; 36. Synchronous belt; 37. Conical gear;

[0061] 41. stepped rod; 42. stirring rod; 43. polygonal slider; 44. polygonal slide; 45. ball bearing; 46. reciprocating guide sleeve;

[0062] 51. Connecting cover; 52. Screen plate; 53. Screen; 54. Sliding rod; 55. Return spring; 56. Eccentric wheel; 57. First discharge port; 58. Second discharge port. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0064] like Figure 1 - Figure 7 As shown:

[0065] The present embodiment provides a rice husk combustion suspension furnace with an automatic ash cleaning function, comprising a furnace body 1, an ash hopper 11 is provided at the bottom of the furnace body 1, an ash discharge pipe 12 is provided at the bottom of the ash hopper 11, and further comprising:

[0066] The inverted plate 13 is integrally fixed to the inner bottom of the lower ash pipe 12;

[0067] The ash box 14 is fixed integrally to the bottom of the lower ash pipe 12. The ash box 14 is larger than the lower ash pipe 12 and the two are eccentrically distributed. The lower ash pipe 12 and one end of the ash box 14 are tangentially matched.

[0068] The ash cleaning component 2 is arranged between the lower ash pipe 12, the inverted plate 13, and the ash discharge box 14. The rice husk ash in the ash hopper 11 is discharged through the ash cleaning component 2. By arranging the ash discharge plate 21 in the ash cleaning component 2 and cooperating with the ash discharge plate 22, the rice husk ash inside the furnace body 1 can be dispersed and sent out, which effectively reduces the load of the ash cleaning component 2, thereby ensuring the durability of each component in the ash cleaning component 2. At the same time, the ash discharge plate 21 and the ash discharge plate 22 cooperate with the ash discharge box 14 to form a blockage at the bottom of the lower ash pipe 12 when the ash is not cleaned;

[0069] The cleaning component 3 is installed between the ash box 14 and the servo motor 27. The surfaces of the ash tray 21 and the ash plate 22 after the ash is delivered are cleaned by the cleaning component 3 under the action of the servo motor 27. By setting the cleaning component 3, the surfaces of the ash tray 21 and the ash plate 22 after the ash is delivered can be cleaned, and the adhesion and residual dust can also be collected to ensure the collection effect, and at the same time, the load of the driving part will not be increased due to the residual adhesion;

[0070] The anti-blocking component 4 is installed between the ash discharging plate 21 and the inverted plate 13. The anti-blocking component 4 can be rotated and reciprocated along the axial direction through the servo motor 27. After the anti-blocking component 4 rotates, the ash hopper 11 is prevented from being blocked. By setting a stepped rod 41 with eccentric states at both ends and setting a stirring rod 42 on the stepped rod 41, it has the advantages of ensuring the stirring effect while controlling the volume. Secondly, when the stepped rod 41 rotates, it will also reciprocate along the axial direction under the action of the ball 45 and the reciprocating guide sleeve 46, which effectively improves the anti-blocking effect.

[0071] The screening component 5 is installed at the lower end of the ash hopper 11 and can receive and screen the rice husk ash discharged from the cleaning component 2. The screening component 5 realizes screening through the power of the servo motor 27. By setting the screening component 5, the rice husk ash can be automatically screened while being taken out, which is convenient for the separation of coarse and fine particles of rice husk ash, plays a pretreatment role, and is convenient for the continued use of rice husk ash. There is no need to use additional screening equipment, and there is no need for additional manual transfer, which reduces costs while ensuring the treatment effect.

[0072] Wherein, the dust removal component 2 includes:

[0073] An ash discharge tray 21, the ash discharge tray 21 is rotatably mounted inside the ash discharge box 14;

[0074] Ash discharge plates 22, which are evenly distributed around the outer periphery of the ash discharge tray 21, and the upper parts of the ash discharge tray 21 and the ash discharge plates 22 are in contact with the bottom of the inverted plate 13;

[0075] The ash discharge port 23 is formed between the ash discharge pipe 12 and the inverted plate 13 and is also located above the rotation path of the ash discharge plate 22;

[0076] The ash drop opening 24 is provided in the ash discharge box 14 and is diagonally distributed with the ash lower opening 23 and is also located below the rotation path of the ash discharge plate 22;

[0077] The servo motor 27 is installed at the bottom of the ash discharge box 14 and the output end is fixed to the ash discharge plate 21. The cleaning component 2 also includes a guide tube 25 fixed to the bottom of the ash discharge box 14 and communicated with the ash drop port 24. The bottom of the guide tube 25 is connected to an ash discharge pipe 26. The ash discharge plate 21 and the ash discharge plate 22 rotate between the inverted plate 13 and the ash discharge box 14 through the servo motor 27.

[0078] As an embodiment of the present invention, the servo motor 27 drives the output end to drive the ash discharge tray 21 and the ash discharge plate 22 to rotate in the inverted plate 13 and the ash discharge box 14, and the rice husk ash inside the ash hopper 11 falls into the cavity formed by the ash discharge tray 21, the ash discharge plate 22 and the ash discharge box 14 through the ash lowering pipe 12 and the ash lowering port 23. After the ash discharge tray 21 and the ash discharge plate 22 rotate, the rice husk ash located in the cavity rotates in the ash discharge box 14 and is finally taken out through the ash dropping port 24. The rice husk ash passes through the ash dropping port 24, the guide tube 25 and the ash discharge pipe 26 and then falls onto the screen 53.

[0079] The cleaning component 3 includes a cleaning port 31 which is opened at the lower end of the ash box 14 and is located on the rotation path of the ash plate 22, and a shield 32 which is fixed to the outside of the ash box 14 and communicates with the inside thereof through the cleaning port 31. A return tube 33 is communicated with the side of the ash pipe 26 at the bottom of the shield 32. A rotating disc brush 34 is arranged inside the shield 32. The bristle part of the disc brush 34 is located in the ash box 14 through the cleaning port 31, and the bristles of the disc brush 34 are also in contact with the ash plate 21, The ash discharge plate 22 is in contact with the brush bristles. The cross-section of the ash discharge plate 22 is a "V" shape that can fully contact the bristles. It also includes two synchronous wheels 35, a synchronous belt 36 is arranged between the two synchronous wheels 35, one synchronous wheel 35 is fixed to the output end of the servo motor 27, and two bevel gears 37 that mesh with each other are arranged between one end of the other synchronous wheel 35 and one end of the disc brush 34. The disc brush 34 is driven by the servo motor 27 through the synchronous wheel 35, the synchronous belt 36 and the bevel gear 37, and then rotates in the protective cover 32.

[0080] As an embodiment of the present invention, the servo motor 27 is fixed at the bottom of the ash discharge box 14 and the output end after being driven drives two synchronous wheels 35 to rotate synchronously through two synchronous belts 36. The synchronous wheel 35 at one end away from the servo motor 27 drives one of the bevel gears 37 to rotate. The rotating bevel gear 37 is engaged with the other bevel gear 37, driving the disc brush 34 to rotate inside the protective cover 32. The rotating protective cover 32 sweeps away the rice husk ash adhered to the outer wall of the ash discharge tray 21 and the ash discharge plate 22 and enters the ash discharge pipe 26 through the cleaning port 31, the protective cover 32, and the reflux tube 33, and then is screened by the screening component 5.

[0081] The anti-blocking component 4 includes a stepped rod 41 and a stirring rod 42 fixed to the upper end of the stepped rod 41. The upper end of the stepped rod 41 is eccentrically distributed with the lower ash pipe 12. The lower end of the stepped rod 41 penetrates the inverted plate 13 and is movably connected with the ash discharge tray 21. A polygonal slider 43 is fixed to the bottom of the stepped rod 41. A polygonal slide 44 is provided inside the ash discharge tray 21 to slide with the polygonal slider 43. A reciprocating guide sleeve 46 is fixed to the upper end of the inverted plate 13 and is sleeved on the outside of the stepped rod 41. A ball 45 is provided at the sleeved portion between the stepped rod 41 and the reciprocating guide sleeve 46.

[0082] As an embodiment of the present invention, the ash discharge plate 21 is driven to rotate by the servo motor 27, and the stepped rod 41 and the stirring rod 42 are driven to rotate under the action of the polygonal slider 43 and the polygonal slide groove 44. At this time, the ball 45 moves along the internal path of the reciprocating guide sleeve 46, causing the stepped rod 41 to also expand and contract axially during the rotation process. During the expansion and contraction process, the polygonal slider 43 will follow the sliding in the polygonal slide groove 44, and the stepped rod 41 and the stirring rod 42 will expand and contract while rotating at the bottom of the ash hopper 11, thereby avoiding blockage of the ash hopper 11 and ensuring smooth discharge of rice husk ash.

[0083] The screening component 5 includes a connecting cover 51 fixed at the bottom of the ash hopper 11 and a sieve plate 52 located in the connecting cover 51, a screen 53 is arranged on the sieve plate 52, symmetrical slide bars 54 are arranged on both sides of the sieve plate 52, the slide bars 54 slide in the connecting cover 51 and a return spring 55 is arranged between the two, and an eccentric wheel 56 is fixed at the bottom of the synchronous wheel 35 meshing with the bevel gear 37, and the eccentric wheel 56 is located on the side of the sieve plate 52 and tangent to it;

[0084] As an embodiment of the present invention, the connecting cover 51 is fixed at the bottom of the ash hopper 11, the sieve plate 52 slides horizontally inside the connecting cover 51 through the sliding rod 54, the reset spring 55 can drive the sieve plate 52 to reset to the center, the eccentric wheel 56 rotates and contacts tangentially with the side of the sieve plate 52, and under the action of the reset spring 55, the sieve plate 52 produces reciprocating motion. After the rice husk ash falls on the screen 53, the coarse and fine particles are screened through the reciprocating motion.

[0085] The sieve plate 52 is inclined and the sieve 53 is located at the upper part of the inclination. The sieve 53 is also located directly below the ash discharge pipe 26. A first discharge port 57 located at the lower front end of the sieve plate 52 is fixedly inclined at the bottom of one side of the connecting cover 51. A second discharge port 58 located directly below the sieve 53 is fixedly inclined at the bottom of the other side of the connecting cover 51.

[0086] As an embodiment of the present invention, the rice husk ash taken out from the ash hopper 11 passes through the ash discharge pipe 26 and falls onto the screen 53. The small particles screened by the screen 53 are discharged outward through the inclined second discharge port 58. The particles screened by the screen 53 pass through the inclined screen plate 52 and are discharged outward through the inclined first discharge port 57.

[0087] It can be understood that the cleaning component 2 provided can ensure the cleaning effect while reducing the load, and also has a sealing function at the bottom of the ash lowering pipe 12. The cleaning component 3 provided can clean the surface of the ash discharge tray 21 and the ash discharge plate 22 after ash delivery, so that the adhered rice husk ash is also removed, thereby improving the completeness of the cleaning. The anti-blocking component 4 provided can form stirring at the bottom of the ash hopper 11, thereby avoiding blockage during cleaning and ensuring smooth discharge of rice husk ash. The screening component 5 provided can automatically screen the rice husk ash after it is taken out, thereby achieving the purpose of pre-treatment. By linking the cleaning component 2, the cleaning component 3, the anti-blocking component 4, and the screening component 5, and then driving them through a separate servo motor 27, it has the advantages of high structural coordination, linkage, and controllability.

[0088] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicate orientation or positional relationship, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0089] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rice husk combustion suspension furnace with automatic ash cleaning function, comprising a furnace body, an ash hopper is provided at the bottom of the furnace body, and an ash discharge pipe is provided at the bottom of the ash hopper, characterized in that: Also includes: An inverted plate, the inverted plate is integrally fixed to the inner bottom of the lower ash pipe; An ash discharge box, the ash discharge box is integrally fixed to the bottom of the lower ash pipe, the ash discharge box is larger than the lower ash pipe and the two are eccentrically distributed, and one end of the lower ash pipe and the ash discharge box are tangentially matched; An ash cleaning component, the ash cleaning component is arranged between the lower ash pipe, the inverted plate and the ash discharge box, and the rice husk ash in the ash hopper is discharged through the ash cleaning component, and the ash cleaning component includes: an ash discharge pan, the ash discharge pan is rotatably installed inside the ash discharge box; an ash discharge plate, the ash discharge plate is evenly distributed on the periphery of the ash discharge pan, and the ash discharge pan and the upper part of the ash discharge plate are in contact with the bottom of the inverted plate; an ash lower opening, the ash lower opening is formed between the lower ash pipe and the inverted plate and is also located above the rotation path of the ash discharge plate; an ash falling opening, the ash falling opening is opened in the ash discharge box and is diagonally distributed with the lower ash opening, and is also located below the rotation path of the ash discharge plate; a servo motor, the servo motor is installed at the bottom of the ash discharge box and the output end is fixed to the ash discharge pan; A cleaning component, wherein the cleaning component is installed between the ash discharge box and the servo motor, and the surfaces of the ash discharge pan and the ash discharge plate after the ash is delivered are cleaned by the cleaning component under the action of the servo motor; the cleaning component comprises an ash cleaning port opened at the lower end of the ash discharge box and located on the rotation path of the ash discharge plate, and a shield fixed to the outside of the ash discharge box and communicating with the inside thereof through the ash cleaning port, wherein the bottom of the shield is connected with a return cylinder, and the return cylinder is communicated with the side of the ash discharge pipe; a rotating disc brush is arranged inside the shield, and the bristle part of the disc brush is located in the ash discharge box through the ash cleaning port, and the bristles of the disc brush are also in contact with the ash discharge pan and the ash discharge plate, and the cross-section of the ash discharge plate is a "V" shape that can fully contact with the bristles; the cleaning component also comprises two synchronous wheels, a synchronous belt is arranged between the two synchronous wheels, one of the synchronous wheels is fixed to the output end of the servo motor, and two mutually meshing bevel gears are arranged between one end of the other synchronous wheel and one end of the disc brush, and the disc brush is driven by the servo motor through the synchronous wheel, the synchronous belt and the bevel gear to rotate in the shield; An anti-blocking component is installed between the ash discharging tray and the inverted plate. The anti-blocking component is driven to rotate by a servo motor and reciprocate along the axial direction. After the anti-blocking component rotates, the ash hopper is prevented from being blocked; The screening component is installed at the lower end of the ash hopper and can receive and screen the rice husk ash discharged from the cleaning component. The screening component realizes screening through the power of the servo motor.

2. The rice husk combustion suspension furnace with automatic ash cleaning function according to claim 1 is characterized by: The ash cleaning component also includes a guide tube fixed at the bottom of the ash discharge box and communicated with the ash drop port, the bottom of the guide tube is connected to an ash discharge pipe, and the ash discharge tray and ash discharge plate rotate between the inverted plate and the ash discharge box through a servo motor.

3. The rice husk combustion suspension furnace with automatic ash cleaning function according to claim 1 is characterized by: The anti-blocking component includes a stepped rod and a stirring rod fixed on the upper end of the stepped rod, the upper end of the stepped rod is eccentrically distributed with the lower ash pipe, and the lower end of the stepped rod penetrates the inverted plate and is movably connected with the ash discharge tray.

4. The rice husk combustion suspension furnace with automatic ash cleaning function according to claim 3 is characterized by: A polygonal sliding block is fixed at the bottom of the stepped rod, a polygonal sliding groove slidably matched with the polygonal sliding block is opened inside the ash discharge tray, a reciprocating guide sleeve is fixed to the upper end of the inverted plate and is sleeved on the outside of the stepped rod, and a ball bearing is provided at the sleeved portion between the stepped rod and the reciprocating guide sleeve.

5. The rice husk combustion suspension furnace with automatic ash cleaning function according to claim 1 is characterized by: The screening component includes a connecting cover fixed at the bottom of the ash hopper and a sieve plate located in the connecting cover, a screen is arranged on the sieve plate, symmetrical sliding rods are arranged on both sides of the sieve plate, the sliding rods slide in the connecting cover and a return spring is arranged between the two, an eccentric wheel is fixed at the bottom of the synchronous wheel meshing with the bevel gear, and the eccentric wheel is located on the side of the sieve plate and is tangent to it.

6. The rice husk combustion suspension furnace with automatic ash cleaning function according to claim 5 is characterized by: The sieve plate is arranged in an inclined manner and the sieve is located at the upper part of the inclination, and the sieve is also located directly below the ash discharge pipe.

7. The rice husk combustion suspension furnace with automatic ash cleaning function according to claim 6 is characterized by: A first discharge port located at the lower end in front of the screen plate is fixed obliquely at the bottom of one side of the connection cover, and a second discharge port located directly below the screen is fixed obliquely at the bottom of the other side of the connection cover.

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