Straw fuel feeding device of boiler

Abstract

The invention provides a straw fuel feeding device of a boiler, and belongs to the technical field of boiler feeding, the straw fuel feeding device of the boiler comprises a material preparation bin arranged at a boiler opening, one side, far away from the boiler, of the material preparation bin is provided with a charging table located at the top of a base frame, and a material pushing trolley capable of sliding into an inner cavity of the material preparation bin is slidably arranged below the charging table; the base frame is fixedly provided with a track corresponding to the material pushing trolley, a driving component for driving the material pushing trolley to move is arranged below the charging table and fixedly connected to the base frame, the material opening blocking piece is driven by the material opening opening and closing assembly to move on the fixing frame, and the material pushing trolley moves on the track below the charging table through the driving component. By means of the arrangement, the material pushing trolley pushes fuel in the inner cavity of the material preparing bin into the boiler, operation in the boiler feeding process is more convenient, through automatic feeding operation, labor in the feeding operation process is reduced, the efficiency in the fuel feeding process is improved, and therefore the operation efficiency of the boiler is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of boiler feeding, in particular to a boiler straw fuel feeding device. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The original meaning of a pot refers to a water container heated on fire, and a furnace refers to a place where fuel is burned. A boiler consists of two parts: a pot and a furnace. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives, or it can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. When the boiler is in use, fuel needs to be added to the inside to ensure the combustion temperature in the boiler. Since the boiler requires a lot of fuel, large quantities of fuel are transported each time the material is delivered, such as straw fuel.

[0003] Related technology 1 (publication number: CN202361399U) discloses a special feeding device for a cotton stalk biomass boiler, and the disclosed technical solution is: the cotton stalk biomass boiler provides a special feeding device, which increases the input of fuel, thereby meeting the fuel calorific value input required for boiler combustion, which is conducive to the normal operation of the boiler. The structural design is simple and reasonable, with low investment, quick results, and can significantly improve the combustion condition of the boiler;

[0004] Related technology 2 (publication number: CN201615497U) discloses a boiler feeding device using biomass molded fuel as the combustion medium. The disclosed technical solution is as follows: before the biomass fuel enters the furnace, the grate driving shaft drives a feeding roller and a broadcasting roller through a transmission system, or a single roller integrating feeding and broadcasting is used to feed the biomass fuel into the chain boiler through the grate for combustion. The transmission system of the feeding device operates synchronously with the grate, and is safe, sturdy, non-blocking, uninterrupted, stable and durable. It has a simple structure, low cost, and is easy to install and use.

[0005] In the above disclosed technical scheme, it is found that the following problems exist in the related technology: in the process of adding fuel to the boiler, for a large boiler, a large amount of fuel is required, and there is a certain distance between the boiler mouth and the ground. Therefore, it is extremely inconvenient to operate when adding fuel in large quantities. In order to ensure the efficiency of the boiler, it is necessary to add bundled straw fuel in time. For this purpose, we propose a new type of straw fuel adding device for the boiler.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background technology section of this application, and therefore may include prior art information that does not constitute known to ordinary technicians in the field. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art or related art. In order to solve the boiler feeding problem existing in the above-mentioned prior art, the present invention provides a straw fuel feeding device for a boiler, which adopts a storage structure combined with a feeding structure to achieve the effect of improving the boiler feeding efficiency. The specific technical solution is:

[0008] A straw fuel delivery device for a boiler comprises a material preparation bin arranged at the furnace mouth of the boiler, a loading platform located at the top of a base frame is arranged on the side of the material preparation bin away from the boiler, a material pushing trolley which can slide into the inner cavity of the material preparation bin is slidably arranged below the loading platform, and a track corresponding to the material pushing trolley is fixedly installed on the base frame, a driving component for driving the material pushing trolley to move is arranged below the loading platform, and the driving component is fixedly connected to the base frame, a material port stopper is arranged between the material preparation bin and the boiler feed port, and the material port stopper is slidably arranged on a fixed frame, and a material port opening and closing assembly for lifting the material port stopper is arranged on the fixed frame.

[0009] In the above technical solution, multi-point lifting assemblies are arranged on the outer walls on both sides of the base frame, and the loading platform is arranged at the movable end of the multi-point lifting assemblies.

[0010] The multi-point lifting assembly includes a first folding frame symmetrically arranged between the base frame and the loading platform, a second folding frame is arranged between the two first folding frames on the same side, a synchronous frame is rotatably arranged between the hinge points of the second folding frame and one of the first folding frames, and a lifting and lowering driving mechanism is arranged on the base frame to drive the two first folding frames on the same side to be synchronously retracted and extended.

[0011] The lifting and lowering driving mechanism includes a movable frame slidably arranged on the base frame, a gear group is symmetrically arranged on the top of the movable frame, a gear is sleeved on the outer wall of the rotating shaft at the hinge between the first folding frame and the base frame, the two gears on the same side are simultaneously meshed with the two parts of the gear group on the movable frame, the ends of the two movable frames are connected by a linkage frame, an electric push rod is arranged on the base frame, and the movable end of the electric push rod is connected to the linkage frame.

[0012] The driving component includes a hydraulic cylinder fixed on the base frame, a push plate is embedded in the front side of the pusher, a connecting frame is embedded in the inner cavity of the pusher, and the movable end of the hydraulic cylinder is fixedly connected to the connecting frame.

[0013] An anti-deflection guide groove is provided on the circumference of the pulley of the pusher, and the anti-deflection guide groove corresponds to the track.

[0014] The top of the track is higher than the bottom of the inner wall of the material preparation bin.

[0015] The material port opening and closing assembly includes a winding drum rotatably arranged on the fixed frame, and the outer wall of the winding drum is simultaneously wound with a first lifting rope and a second lifting rope, and the traction ends of the first lifting rope and the second lifting rope are symmetrically arranged on the top of the material port baffle, and the top of the fixed frame is respectively provided with a first guide wheel group and a second guide wheel group, the first lifting rope is wound around the outside of the first guide wheel group, and the second lifting rope is wound around the outside of the second guide wheel group.

[0016] Limiting plates are fixedly mounted on the inner walls of both sides of the fixing frame, and the limiting plates and the inner walls of the fixing frame form a guiding groove corresponding to the material inlet stopper.

[0017] A support plate flush with the bottom of the inner wall is arranged on the side of the material preparation bin facing the boiler, and the bottom of the support plate is connected to the bottom of the boiler feed port.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the straw fuel delivery device of the boiler:

[0019] 1. First, the fuel is loaded into the preparation bin on the loading platform by a grab hook machine or other machine, and then the pusher is moved on the track under the loading platform by a driving component, so that the pusher pushes the fuel in the inner cavity of the preparation bin into the boiler, making the operation of the boiler feeding process more convenient. Through the automated feeding operation, the labor of the feeding operation process is reduced, the efficiency of the fuel feeding process is improved, thereby ensuring the operation efficiency of the boiler.

[0020] Second, the loading platform can be lifted up through the multi-point lifting components on the frame, which brings convenience when inspecting the components at the bottom of the loading platform, ensures the stability of the loading platform lifting process, and thus improves the safety of the inspection process.

[0021] 3. In the process of driving the pusher to push the fuel in the preparation bin, the pulley of the pusher drives the anti-deflection guide groove to move on the outside of the track, thereby ensuring the stability of the moving direction of the pusher, avoiding position deviation, and further ensuring the stability of the fuel pushing process.

[0022] Fourth, the height difference between the top surface of the track and the bottom surface of the inner wall of the material preparation bin corresponds to the depth of the anti-deflection guide groove, so that the front two wheels of the pusher can smoothly enter the interior of the material preparation bin from the track.

[0023] 5. The output shaft of the motor drives the winding drum to rotate, so that the winding drum drives the first and second hanging ropes to wind or unwind at the same time, so that the first and second hanging ropes drive the material port stopper to move up and down through the guidance of the first and second guide wheel groups, thereby making the operation of the boiler feed port opening and closing process more convenient.

[0024] 6. The limiting plate and the inner wall of the fixing frame form a guide groove corresponding to the material inlet stopper. The two longitudinal limiting guide grooves ensure the stability of the material inlet stopper during movement and avoid position deviation, thereby ensuring the sealing of the boiler feed inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a straw fuel delivery device for a boiler of the present invention;

[0026] Figure 2 It is a schematic diagram of the explosion structure of a straw fuel delivery device for a boiler of the present invention;

[0027] Figure 3 The structure of the material inlet stopper of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 4 The structure of the material inlet stopper of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 5 The structure of the loading platform of the present invention is schematically shown. Figure 1 ;

[0030] Figure 6 The structure of the loading platform of the present invention is schematically shown. Figure 2 ;

[0031] Figure 7 It is a partial structural schematic diagram of the material preparation bin and the material feeding vehicle of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the pusher vehicle part of the present invention;

[0033] in, Figures 1 to 8 The correspondence between the figure numbers and the component names is: 1-base frame, 2-loading platform, 3-pushing car, 4-material port baffle, 5-material preparation bin, 6-first folding frame, 7-second folding frame, 8-first guide wheel group, 10-second guide wheel group, 11-connecting frame, 12-fixed frame, 13-electric push rod, 15-first lifting rope, 16-second lifting rope, 17-limiting plate, 18-winding drum, 20-support, 21-movable frame, 22-tooth group, 23-synchronizing frame, 24-gear, 25-hydraulic cylinder, 27-second base, 28-rotating shaft, 30-linkage frame, 31-track, 32-anti-deviation guide groove, 33-support plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The following is a combination of specific implementation cases and attached Figure 1-8 The present invention is further described below, but the present invention is not limited to these embodiments.

[0036] A straw fuel delivery device for a boiler comprises a base frame 1, a preparation bin 5 is fixedly mounted on the top of the base frame 1, and a loading platform 2 located on the top of the base frame 1 is provided on the side of the preparation bin 5 away from the boiler. The loading platform 2 is fixed to the ground by a bracket. The left and right sides and the top of the preparation bin 5 are open structures, and the receiving bin 1 is located at a position opposite to the feed inlet of the boiler. A loading platform 2 is installed to dock with the material pushing side of the preparation bin 5, and the loading platform 2 and the preparation bin 5 are fixed to the ground by a bracket. The loading platform 2 is docked with the preparation bin 5.

[0037] A pusher 3 that can slide into the inner cavity of the preparation bin 5 is slidably provided below the loading platform 2, and a track 31 corresponding to the pusher 3 is fixedly installed on the base frame 1. Two mutually parallel tracks 31 are fixed by a bracket below the loading platform 2, and one end of the track 31 is vertically fixed on the side wall of the preparation bin 5 facing the loading platform 2, and the other end of the track 31 is vertically fixed on the surface of the support 20 at the bottom of the loading platform 2. The pusher 3 slides below the loading platform 2 through the track 31. As the pusher 3 moves, the pusher 3 drives the push plate on the front side to push the fuel out of the inner cavity of the preparation bin 5, and the pushed fuel enters the boiler from the boiler feed port.

[0038] A driving component for driving the pusher 3 to move is provided below the loading platform 2, and the driving component is fixed to the base frame 1. The pusher 3 is driven by the driving component to enter the inner cavity of the preparation bin 5 from the bottom of the loading platform 2, so that the outer walls of the pusher 3 slide against the inner walls of the loading platform 2, thereby pushing the fuel out of the preparation bin 5.

[0039] A material port stopper 4 is provided between the material preparation bin 5 and the boiler feed port, and the material port stopper 4 is slidably provided on a fixed frame 12, and a material port opening and closing assembly for lifting the material port stopper 4 is provided on the fixed frame 12. The position of the material port stopper 4 is adjusted by the material port opening and closing assembly, so that the two side surfaces of the material port stopper 4 are simultaneously attached to the boiler feed port and the opposite surface of the material preparation bin 5 and slide.

[0040] When it is necessary to put fuel into the boiler, the fuel is first loaded into the preparation bin 5 by a grabber or other machine on the loading platform 2. Then, the material port stopper 4 is driven to move on the fixing frame 12 by the material port opening and closing assembly, so that the material port stopper 4 slides upward on the inner wall of the fixing frame 12, so that the feed port of the boiler is opened.

[0041] Then, the pusher 3 is moved on the track 31 below the charging platform 2 by the driving member, so that the pusher 3 pushes the fuel in the inner cavity of the preparation bin 5 into the boiler, making the operation of the boiler charging process more convenient, reducing the labor of the charging operation process through the automated charging operation, improving the efficiency of the fuel charging process, and thus ensuring the operation efficiency of the boiler.

[0042] Wherein, multi-point lifting components are arranged on the outer walls of both sides of the base frame 1. The loading platform 2 is arranged at the movable end of the multi-point lifting components.

[0043] The loading platform 2 can be lifted up by means of the multi-point lifting assembly on the frame 1 , thereby bringing convenience when inspecting and repairing the components at the bottom of the loading platform 2 .

[0044] The multi-point lifting assembly includes a first folding frame 6 symmetrically arranged between the base frame 1 and the loading platform 2. A second base 27 is fixedly installed at the bottom of the base frame 1 and the loading platform 2. Bearings are embedded and installed on the inner walls of both sides of the second base 27, and the two ends of the rotating shaft 28 are respectively embedded and installed inside the two bearings. The two ends of the first folding frame 6 are respectively fixedly sleeved on the outside of the two rotating shafts 28 through the opening of the mounting holes. The upper and lower ends of the first folding frame 6 are respectively hinged to the base frame 1 and the loading platform 2.

[0045] A second folding frame 7 is arranged between the two first folding frames 6 on the same side, and the two ends of the second folding frame 7 are also hinged to the base frame 1 and the loading platform 2 respectively, and the second folding frame 7 is located between the two first folding frames 6. A synchronous frame 23 is rotatably arranged between the hinge point of the second folding frame 7 and one of the first folding frames 6, and one end of the synchronous frame 23 is movably sleeved on the hinge shaft where the two frame bodies of the second folding frame 7 are located, and the other end of the synchronous frame 23 is movably sleeved on the outside of the hinge shaft where the two frame bodies of one of the first folding frames 6 are located through the opening of the mounting hole. This allows the second folding frame 7 to be folded and extended synchronously with one of the first folding frames 6.

[0046] The base frame 1 is provided with a lifting and placing driving mechanism for driving the two first folding frames 6 on the same side to be folded and extended synchronously. Through the lifting and placing driving mechanism, the first folding frames 6 and the second folding frames 7 on both sides are simultaneously unfolded, and the stability of the loading platform 2 during the lifting and placing process is ensured by supporting and lifting the loading platform 2 at multiple points.

[0047] Under normal circumstances, the loading platform 2 is fixed to the base frame 1 through an L-shaped connecting seat, thereby ensuring the stability of the loading process into the material preparation bin 5.

[0048] It is worth noting that the lifting and placing driving mechanism includes a movable frame 21 slidably arranged on the base frame 1, and a tooth group 22 is symmetrically arranged on the top of the movable frame 21. The first base 21 is fixedly installed on both sides of the base frame 1, and a movable hole is opened on the surface of the first base 21 to penetrate the inner cavity horizontally. The aperture of the movable hole corresponds to the movable frame 21, so that the movable frame 21 slides in the through hole of the first base 21. Two parts of the tooth group 22 are arranged in sequence from both sides to the center on the top of the movable frame 21.

[0049] The outer wall of the rotating shaft 28 at the hinge of the first folding frame 6 and the base frame 1 is sleeved with a gear 24, and the two gears 24 on the same side are meshed with the two parts of the tooth set 22 on the movable frame 21 at the same time. The second bases 27 corresponding to the positions of the first folding frames 6 are fixedly installed on the surfaces of both sides of the base frame 1, and the rotating shaft 28 is rotatably set on the top of each second base 27. A mounting hole is opened at the lower end of each first folding frame 6, and the lower end of the first folding frame 6 is fixedly sleeved on the outside of the rotating shaft 28 through the mounting hole. A gear 24 is fixedly sleeved on the outer wall of each rotating shaft 28, and the gear 24 is meshed with the tooth set 22.

[0050] The ends of the two movable frames 21 are connected through a linkage frame 30, and an electric push rod 13 is provided on the base frame 1, and the movable end of the electric push rod 13 is connected to the linkage frame 30. The ends of the two movable frames 21 away from the boiler are fixedly connected through the linkage frame 30. The electric push rods 13 parallel to the track 31 are fixedly installed on the inner walls of both sides of the base frame 1. The movable end of the electric push rod 13 is vertically fixed on the surface of the linkage frame 30. The electric push rod 13 is electrically connected to an external power supply through a wire.

[0051] When it is necessary to inspect the components inside the base frame 1, the electric push rod 13 is connected to the power supply, so that the movable end of the electric push rod 13 pushes the movable frame 21 to slide on the second base 27, so that the movable frame 21 drives the two parts of the tooth set 22 to move at the same time. The gear 24 meshing with the tooth set 22 drives the rotating shaft 28 to rotate, so that the first folding frame 6 is unfolded at the same time, and at the same time, the second folding frame 7 is synchronously unfolded with the first folding frame 6 through the synchronous frame 23, so that the loading platform 2 is removed from the base frame 1, making the inspection process more convenient, thereby bringing convenience to the operation process of relevant personnel.

[0052] In addition, the driving member includes a hydraulic cylinder 25 fixed on the base frame 1. A support 20 parallel to the material inlet stopper 4 is fixedly installed on the base frame 1 and below the loading platform 2. The cylinder end of the hydraulic cylinder 25 is vertically fixed on the surface of the support 20 facing the boiler, and the movable end of the hydraulic cylinder 25 is vertically fixed on the push plate surface of the pusher trolley 3.

[0053] A push plate is embedded in the front side of the pusher trolley 3, and the movable end of the hydraulic cylinder 25 is fixedly mounted on the inner wall of the push plate. A connecting frame 11 is embedded in the inner cavity of the pusher trolley 3, and the movable end of the hydraulic cylinder 25 is fixedly connected to the connecting frame 11. One end of the connecting frame 11 is vertically fixedly mounted on the surface of the push plate, and the other end of the connecting frame 11 is fixedly connected to the movable end of the hydraulic cylinder 25. The cylinder end of the hydraulic cylinder 25 is vertically fixed on the surface of the fixed seat, and the fixed seat is fixedly mounted on the rear side of the base frame 1. The hydraulic cylinder 25 is fixed to the base frame 1 through the fixed seat and is in a position perpendicular to the push plate. The movable end of the hydraulic cylinder 25 enables the pusher trolley 3 to move on the track 31 through the connecting frame 11, so that the pusher trolley 3 drives the push plate in front to slide into the inner cavity of the preparation bin 5, thereby pushing the fuel on the preparation bin 5 into the boiler.

[0054] The pulley of the pusher 3 is provided with an anti-deviation guide groove 32 in the circumferential direction, and the anti-deviation guide groove 32 corresponds to the track 31. In the process of driving the pusher 3 to push the fuel in the preparation bin 5, the pulley of the pusher 3 drives the anti-deviation guide groove 32 to move around the outside of the track 31, thereby ensuring the stability of the moving direction of the pusher 3, avoiding position deviation, and further ensuring the stability of the fuel pushing process.

[0055] The top of the track 31 is higher than the bottom of the inner wall of the material preparation bin 5. The height difference between the top surface of the track 31 and the bottom surface of the inner wall of the material preparation bin 5 corresponds to the groove depth of the anti-deflection guide groove 32, so that the front two wheels of the pusher 3 can smoothly enter the interior of the material preparation bin 5 from the track 31.

[0056] In addition, the material port opening and closing assembly includes a winding drum 18 rotatably arranged on the fixed frame 12. A fixed mounting bracket is fitted on the outer wall of the fixed frame 12, and bearings are embedded in the inner walls of both sides of the bracket. The two ends of the central axis are respectively embedded in the inside of the two bearings, and the winding drum 18 is fixedly sleeved on the outside of the central axis through a mounting hole opened in the center. The motor is fixed on the outer wall of the bracket through a frame, and the output shaft of the motor passes through the side wall of the bracket and extends to the inner cavity and is fixedly connected to one end of the central axis. The motor is electrically connected to an external power source through a wire.

[0057] The outer wall of the winding drum 18 is wound with the first and second hanging ropes 15 and 16 at the same time, and the traction ends of the first and second hanging ropes 15 and 16 are symmetrically arranged on the top of the material inlet stopper 4, and one end of the first and second hanging ropes 15 and 16 are respectively and symmetrically fixedly installed on the outer wall of the winding drum 18. The first and second hanging ropes 15 and 16 are wound around the outside of the winding drum 18 at the same time, and the other ends of the first and second hanging ropes 15 and 16 after being wound pass through the through holes opened at the top of the fixing frame 12 through the laying of the first guide wheel group 8 and the second guide wheel group 10, and are then fixed on the top of the material inlet stopper 4.

[0058] The top of the fixed frame 12 is respectively provided with a first guide wheel group 8 and a second guide wheel group 10, the first suspension rope 15 is wound around the outside of the first guide wheel group 8, the second suspension rope 16 is wound around the outside of the second guide wheel group 10, and the motor is a forward and reverse adjustable motor.

[0059] The output shaft of the motor drives the winding drum 18 to rotate, so that the winding drum 18 drives the first hanging rope 15 and the second hanging rope 16 to wind or unwind at the same time, so that the first hanging rope 15 and the second hanging rope 16 drive the material port stopper 4 to move up and down through the guidance of the first guide wheel group 8 and the second guide wheel group 10. Thereby, the operation of the opening and closing process of the boiler feed port is more convenient.

[0060] Limiting plates 17 are fixedly installed on the inner walls of both sides of the fixing frame 12, and the limiting plates 17 and the inner walls of the fixing frame 12 form a guide groove corresponding to the material inlet stopper 4. Two limiting plates 17 parallel to each other are fixedly installed on the inner walls of both sides of the fixing frame 12, and the guide groove formed between the two limiting plates 17 corresponds to the specification of the material inlet stopper 4, so that the material inlet stopper 4 slides between the two limiting plates 17. The two longitudinal limiting guide grooves ensure the stability of the material inlet stopper 4 during movement, avoid position deviation, and thus ensure the sealing of the boiler feed inlet.

[0061] Furthermore, a support plate 33 flush with the bottom of the inner wall is provided on the side of the stock storage bin 5 facing the boiler, and the bottom of the support plate 33 is in contact with the bottom of the boiler feed port. The support plate 33 supports and limits the bottom of the feed port stopper 4, so that after the feed port stopper 4 is removed from the boiler feed port, when feeding into the boiler, the fuel directly enters the boiler through the support plate 33.

[0062] The present embodiment provides a straw fuel delivery device for a boiler, and the working principle is as follows: first, the straw fuel is loaded into the preparation bin 5 by a grabber or other machine on the loading platform 2. Then, the winding drum 18 is driven to rotate by the output shaft of the motor, so that the winding drum 18 simultaneously drives the first hanging rope 15 and the second hanging rope 16 to reel up, so that the first hanging rope 15 and the second hanging rope 16 are guided by the first guide wheel group 8 and the second guide wheel group 10 to drive the material port stopper 4 to move away from the boiler feed port.

[0063] Then, the pusher 3 is driven to move on the track 31 through the movable end of the hydraulic cylinder 25 via the connecting frame 11, so that the pusher 3 drives the push plate in front to slide into the inner cavity of the preparation bin 5, and as the pusher 3 moves, the straw fuel in the preparation bin 5 is pushed into the boiler.

[0064] Afterwards, the pusher 3 is reset, and the material inlet stopper 4 is moved to between the material preparation bin 5 and the boiler feed inlet.

[0065] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0066] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0067] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A straw fuel delivery device for a boiler, characterized in that: The invention comprises a material preparation bin (5) arranged at the furnace mouth of a boiler, a loading platform (2) located at the top of a base frame (1) is arranged on the side of the material preparation bin (5) away from the boiler, a material pushing trolley (3) which can slide into the inner cavity of the material preparation bin (5) is slidably arranged below the loading platform (2), and a track (31) corresponding to the material pushing trolley (3) is fixedly installed on the base frame (1), a driving component for driving the material pushing trolley (3) to move is arranged below the loading platform (2), and the driving component is fixedly connected to the base frame (1), a material inlet stopper (4) is arranged between the material preparation bin (5) and the boiler feed inlet, and the material inlet stopper (4) is slidably arranged on a fixed frame (12), and a material inlet opening and closing component for lifting and lowering the material inlet stopper (4) is arranged on the fixed frame (12).

2. The straw fuel delivery device for a boiler according to claim 1, characterized in that: Multi-point lifting components are arranged on the outer walls on both sides of the base frame (1), and the loading platform (2) is arranged at the movable end of the multi-point lifting components.

3. The straw fuel delivery device for a boiler according to claim 2, characterized in that: The multi-point lifting assembly comprises a first folding frame (6) symmetrically arranged between the base frame (1) and the loading platform (2), a second folding frame (7) is arranged between the two first folding frames (6) on the same side, a synchronous frame (23) is rotatably arranged between the hinge point of the second folding frame (7) and one of the first folding frames (6), and a lifting and lowering driving mechanism is arranged on the base frame (1) for driving the two first folding frames (6) on the same side to be synchronously retracted and extended.

4. The straw fuel delivery device for a boiler according to claim 1, characterized in that: The lifting and lowering driving mechanism comprises a movable frame (21) slidably arranged on the base frame (1), a tooth group (22) is symmetrically arranged on the top of the movable frame (21), a gear (24) is sleeved on the outer wall of the rotating shaft (28) at the hinge between the first folding frame (6) and the base frame (1), and two gears (24) on the same side are simultaneously meshed with two parts of the tooth group (22) on the movable frame (21), and the ends of the two movable frames (21) are connected by a linkage frame (30), and an electric push rod (13) is arranged on the base frame (1), and the movable end of the electric push rod (13) is connected to the linkage frame (30).

5. The straw fuel delivery device for a boiler according to claim 1, characterized in that: The driving component comprises a hydraulic cylinder (25) fixed on the base frame (1), a push plate is embedded in the front side of the pusher trolley (3), a connecting frame (11) is embedded in the inner cavity of the pusher trolley (3), and the movable end of the hydraulic cylinder (25) is fixedly connected to the connecting frame (11).

6. The straw fuel delivery device for a boiler according to claim 1, characterized in that: An anti-deflection guide groove (32) is provided in the circumference of the pulley of the pusher (3), and the anti-deflection guide groove (32) corresponds to the track (31).

7. The straw fuel delivery device for a boiler according to claim 1, characterized in that: The top of the track (31) is higher than the bottom of the inner wall of the material preparation bin (5).

8. The straw fuel delivery device for a boiler according to claim 1, characterized in that: The material inlet opening and closing assembly includes a winding drum (18) rotatably arranged on the fixed frame (12), and the outer wall of the winding drum (18) is simultaneously wound with a first lifting rope (15) and a second lifting rope (16), and the traction ends of the first lifting rope (15) and the second lifting rope (16) are symmetrically arranged on the top of the material inlet baffle (4), and the top of the fixed frame (12) is respectively provided with a first guide wheel group (8) and a second guide wheel group (10), the first lifting rope (15) is wound around the outside of the first guide wheel group (8), and the second lifting rope (16) is wound around the outside of the second guide wheel group (10).

9. The straw fuel delivery device for a boiler according to claim 1, characterized in that: Limiting plates (17) are fixedly mounted on the inner walls of both sides of the fixing frame (12), and the limiting plates (17) and the inner walls of the fixing frame (12) form guide grooves corresponding to the material inlet stopper (4).

10. The straw fuel delivery device for a boiler according to claim 1, characterized in that: A support plate (33) flush with the bottom of the inner wall is arranged on the side of the material preparation bin (5) facing the boiler, and the bottom of the support plate (33) is in contact with the bottom of the boiler feed port.

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