Feeding device of fluidized bed furnace

Abstract

The utility model relates to a feeding device of a fluidized bed furnace. The fluidized bed furnace feeding device comprises a feeding pipe, a material distribution bin, a stripping belt, a falling hopper, a weighing belt, a material distribution opening and a movable gate, the material distribution bin is in a hollow square shape and is arranged at the lower end of the feeding pipe, the material distribution opening is formed in the bottom of the material distribution bin in the discharging direction and is a door-shaped frame, and the movable gate used for adjusting the discharging thickness is installed on the material distribution opening; the stripping belt is mounted at the bottom of the distribution bin, and the stripping belt is wider than the bottom of the distribution bin; a blanking hopper is arranged at the bottom of the front section of the stripping belt in the feeding direction, and a weighing belt is arranged below the blanking hopper. According to the scheme provided by the invention, the contact area with the stripping belt can be increased by arranging the square distribution bin, the situation that the stripping belt is tightly pressed by fuel, and the distribution bin is blocked is avoided, quantitative and uniform conveying of the fuel is achieved in cooperation with the distribution port and the movable gate, and it is guaranteed that the furnace temperature of the fluidized bed furnace is stable.

Description

Technical Field

[0001] This application relates to the technical field of fluidized bed boiler feeding, and particularly to a fluidized bed boiler feeding device. Background Art

[0002] The fluidized bed boiler feeding system is a conveying system that continuously supplies fuel to the fluidized bed boiler. Currently, the disk feeder used in the 14㎡ fluidized bed boiler feeding system consists of a distributing disk, an arc-shaped deflector, and an electronic weighing belt. The lower part of the circular hopper bin is the arc-shaped deflector and the disk. Below the arc-shaped deflector is the weighing belt. When the disk is distributing materials, the materials rotate with the feeding disk and do uniform circular motion. Due to the action of centrifugal force, the fuel gradually moves from the center of the disk to the edge, and then the arc-shaped deflector directs the fuel to the weighing belt. The feeding amount is affected by the fuel amount in the circular hopper bin, resulting in uneven feeding, sometimes large and sometimes small, which easily causes accumulation in the front chamber and furnace temperature fluctuations, seriously restricting the stability of the fluidized bed boiler condition and the improvement of production capacity. Summary of the Utility Model

[0003] To solve or partially solve the problems existing in the related technologies, this application provides a fluidized bed boiler feeder, aiming to solve the problem of uneven feeding of the disk feeder.

[0004] This application provides a fluidized bed boiler feeder, including:

[0005] A feed pipe, a distributing bin, a discharging belt, a dropping hopper, a weighing belt, a distributing port, and a movable gate.

[0006] The distributing bin is a hollow square shape, and is arranged at the lower end of the feed pipe. A distributing port is installed in the discharging direction at the bottom of the distributing bin. The distributing port is a door-shaped frame, and a movable gate for adjusting the discharging thickness is installed on the distributing port.

[0007] The discharging belt is installed at the bottom of the distributing bin, and the width of the discharging belt is greater than the width of the bottom of the distributing bin.

[0008] A dropping hopper is arranged at the bottom of the front section of the feeding direction of the discharging belt, and a weighing belt is arranged below the dropping hopper.

[0009] Optionally, in some embodiments, the movable gate includes:

[0010] A turntable, a bearing, a slide rail, a gate, a cross beam, a threaded rod, and a nut.

[0011] The slide rails are symmetrically installed on both sides of the discharging end of the distributing port. The cross beam is installed on the top of the slide rails, and a bearing is installed on the cross beam.

[0012] The gate is installed between the two slide rails, and a nut is installed on the gate. The nut and the bearing are in the same vertical direction.

[0013] The upper end of the threaded rod is installed in the bearing, and the lower end passes through the nut. The rotation of the threaded rod drives the nut and the gate to move up and down;

[0014] A turntable is installed at the top of the threaded rod.

[0015] Optionally, in some embodiments, the distribution bin is a bottomless conical square hopper.

[0016] Optionally, in some embodiments, the feed pipe, the distribution bin, the stripping belt, the blanking hopper, and the weighing belt are installed on the support from top to bottom in sequence, and the support is of a frame structure.

[0017] The technical solution provided by this application may include the following beneficial effects:

[0018] By setting a square distribution bin, the contact area with the stripping belt is increased, preventing the fuel from jamming the stripping belt and causing blockage of the distribution bin. Cooperating with the distribution port and the movable gate realizes the quantitative and uniform conveying of the fuel, ensuring the stable temperature of the fluidized bed furnace.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By describing the exemplary embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present application will become more obvious. Among them, in the exemplary embodiments of the present application, the same reference numerals generally represent the same components.

[0021] Figure 1 is a schematic structural diagram of a fluidized bed furnace feeding device shown in an embodiment of the present application;

[0022] Figure 2 is a schematic installation diagram of the support of the fluidized bed furnace feeding device shown in an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of the movable gate of the fluidized bed furnace feeding device shown in an embodiment of the present application.

[0024] Reference numerals: 1 - feed pipe, 2 - distribution bin, 3 - stripping belt, 4 - blanking hopper, 5 - weighing belt, 6 - distribution port, 7 - movable gate, 701 - turntable, 702 - bearing, 703 - slide rail, 704 - gate, 705 - cross beam, 706 - threaded rod, 707 - nut, 8 - support. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0026] It should be understood that although the terms "first", "second", "third", etc. may be used in the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0028] Unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] At present, the disk feeder used in the 14㎡ fluidized bed furnace feeding system consists of a distributing disk, an arc-shaped deflector and an electronic weighing belt. Below the circular hopper bin are the arc-shaped deflector and the disk. Below the arc-shaped deflector is the weighing belt. When the disk is distributing materials, the materials rotate with the feeding disk and do uniform circular motion. Due to the action of centrifugal force, the fuel gradually moves from the center of the disk to the edge, and then the arc-shaped deflector discharges the fuel to the weighing belt in a directional manner. The feeding amount is affected by the fuel amount in the circular hopper bin, resulting in uneven feeding, sometimes large and sometimes small, which easily causes accumulation in the front chamber and furnace temperature fluctuations, seriously restricting the stability of the fluidized bed furnace condition and the improvement of production capacity.

[0030] In view of the above problems, an embodiment of the present application provides a feeding device for a fluidized bed furnace, which can increase the contact area with the discharging belt by setting a square material distribution bin, avoid fuel jamming the discharging belt and causing blockage of the material distribution bin, and cooperate with the material distribution port and the movable gate to achieve quantitative and uniform conveying of fuel, ensuring the stable furnace temperature of the fluidized bed furnace.

[0031] The technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0032] Figure 1 It is a schematic structural diagram of the feeding device for a fluidized bed furnace shown in the embodiment of the present application.

[0033] See Figure 1 , a feeding device for a fluidized bed furnace, comprising:

[0034] a feed pipe 1, a material distribution bin 2, a discharging belt 3, a blanking hopper 4, a weighing belt 5, a material distribution port 6, a movable gate 7 and a support 8;

[0035] The feed pipe 1 is fixed at the top of the support 8, the material distribution bin 2 is arranged at the lower end of the feed pipe 1, and the material distribution bin 2 is also fixed on the support 8. The material distribution bin 2 is a hollow bottomless conical square hopper, which receives the fuel conveyed by the feed pipe 1 and stores it at the bottom of the material distribution bin 2.

[0036] A material distribution port 6 is installed in the discharging direction at the bottom of the material distribution bin 2. The material distribution port 6 is a portal frame without baffles on the front, rear and bottom surfaces. A movable gate 7 for adjusting the discharging thickness is installed at the front section in the discharging direction of the material distribution port 6. The movable gate 7 includes a turntable 701, a bearing 702, a slide rail 703, a gate 704, a cross beam 705, a threaded rod 706 and a nut 707. The slide rails 703 are symmetrically welded on both sides of the discharging end of the material distribution port 6, the cross beam 705 is welded on the top of the slide rails 703, and the outer ring of the bearing 702 is on the cross beam 705. The gate 704 is slidably installed between the two slide rails 703, and a nut 707 is welded on the gate 704. The nut 707 and the bearing 702 are on the same straight line in the same vertical direction. The upper end of the threaded rod 706 is fixed in the bearing 702, and the lower end passes through the nut 707. A turntable 701 is installed at the top of the threaded rod 706. By rotating the threaded rod 706, the nut 707 and the gate 704 are driven to rise and fall, thereby adjusting the discharging thickness.

[0037] The discharging belt 3 is installed on the support 8 at the bottom of the material distribution bin 2. The width of the discharging belt 3 is greater than the width of the bottom of the material distribution bin 2. The contact surface with the discharging belt 3 is dispersed through the square hopper opening at the bottom of the material distribution bin 2 to avoid jamming the discharging belt 3. Through the continuous rotation of the discharging belt 3, the fuel is continuously transported out from the material distribution port 6 of the material distribution bin 2. By installing a frequency converter to control the driving motor of the discharging belt 3, the rotation speed of the discharging belt 3 is accurately controlled to achieve quantitative feeding.

[0038] A blanking belt 3 is provided with a blanking hopper 4 at the bottom of the front section of the feeding direction. A weighing belt 5 is arranged below the blanking hopper 4. The blanking hopper 4 and the weighing belt 5 are successively installed on a bracket 8.

[0039] The embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary technicians in the technical field to understand the embodiments disclosed herein.

Claims

1. A fluidized bed furnace feeding device, characterized in that: A feeding pipe (1), a material distribution bin (2), a material stripping belt (3), a material drop hopper (4), a weighing belt (5), a material distribution port (6) and a movable gate (7). The material distribution bin (2) is a hollow square shape. The material distribution bin (2) is arranged at the lower end of the feed pipe (1). A material distribution opening (6) is installed at the bottom of the material distribution bin (2) in the material discharging direction. The material distribution opening (6) is a door-shaped frame. A movable gate (7) for adjusting the thickness of the discharging material is installed on the material distribution opening (6); The stripping belt (3) is installed at the bottom of the material distribution bin (2), and the width of the stripping belt (3) is greater than the width of the bottom of the material distribution bin (2); A material dropping hopper (4) is arranged at the bottom of the front section of the stripping belt (3) in the feeding direction, and a weighing belt (5) is arranged below the material dropping hopper (4).

2. The feeding device for a fluidized bed furnace according to claim 1, characterized in that: The movable gate (7) comprises: A turntable (701), a bearing (702), a slide rail (703), a gate (704), a crossbeam (705), a threaded rod (706) and a nut (707); The slide rails (703) are symmetrically mounted on both sides of the discharging end of the material distribution port (6), the cross beam (705) is mounted on the top of the slide rails (703), and the cross beam (705) is mounted with bearings (702); The gate (704) is installed between the two slide rails (703), and a nut (707) is installed on the gate (704), and the nut (707) and the bearing (702) are in the same vertical direction; The upper end of the threaded rod (706) is installed in the bearing (702), and the lower end passes through the nut (707). The rotation of the threaded rod (706) drives the nut (707) and the gate (704) to rise and fall; A rotating disc (701) is mounted on the top of the threaded rod (706).

3. The feeding device for a fluidized bed furnace according to claim 1, characterized in that: The material distribution bin (2) is a bottomless conical square bucket.

4. The feeding device for a fluidized bed furnace according to claim 1, characterized in that: The feed pipe (1), the material distribution bin (2), the material stripping belt (3), the material drop hopper (4) and the weighing belt (5) are sequentially installed on the bracket (8) from top to bottom, and the bracket (8) is a frame structure.

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