Stokehole stock bin feeding device of biomass power plant

Abstract

The utility model discloses a biomass power plant stokehole stock bin feeding device which comprises a climbing conveyor and a hopper, a conveying belt is arranged on the inner side of the climbing conveyor in a transmission mode through a motor, and a plurality of blocking pieces are installed on the surface of the conveying belt at equal intervals. According to the utility model, the hopper is arranged above the horizontal conveying part of the climbing conveyor, and the hopper and the climbing conveyor are elastically connected through the fixing frame, the spring, the connecting rod and the limiting column, so that when biomass fuel in the stokehole stock bin is transferred into the hopper, the conveying belt of the climbing conveyor is started to move through the motor; biomass fuel in the hopper is promoted to be transferred into the boiler under the conveying action of the conveying belt and the surface blocking pieces of the conveying belt, the integrating degree of the biomass fuel and the height of a feeding opening of the boiler is kept through the arrangement of the inclined conveying part, and in the process, a vibration motor in the supporting frame is started to promote vibration of the vibration motor to directly act on the hopper; and the hopper is kept in a continuous vibration state under the action of the spring in the fixed frame, so that the discharging fluency of the hopper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass power generation, in particular to a furnace front silo feeding device for a biomass power plant. Background Art

[0002] Biomass power generation is the use of biomass energy to generate electricity. It is a type of renewable energy power generation, including direct combustion of agricultural and forestry waste power generation, agricultural and forestry waste gasification power generation, garbage incineration power generation, landfill gas power generation, and biogas power generation. Direct combustion power generation is to directly burn biomass in a boiler to produce steam to drive steam turbines and generators to generate electricity. The biomass can be transported to the boiler through a feeding device. There are many types of biomass, including: powder, spheres, and rods. The larger the biomass fuel, the easier it is to slide during transportation by the feeding device, making it inconvenient to transport to the boiler.

[0003] After searching, patent number CN216188793U is a feeding device for the furnace silo of a biomass power plant. It includes a symmetrical first support frame and a second support frame, one end of the two first support frames and the second support frame are connected to a side plate, a conveyor belt is arranged between the two side plates, a transmission shaft is arranged inside the conveyor belt between the two side plates, a motor is installed at the front end of the side plate, the output shaft of the motor is connected to the transmission shaft at the bottom of the side plate, an anti-skid mechanism is arranged on the surface of the conveyor belt, and the anti-skid mechanism includes a baffle, a plug plate is detachably connected to the inside of the baffle, a sawtooth piece is connected to the upper end of the plug plate, and a hopper is arranged above the conveyor belt between the two second support frames. The feeding device for the furnace silo of a biomass power plant described in the utility model can convey biomass fuels of different shapes, and there will be no idling of the conveyor belt, which can improve the feeding efficiency.

[0004] In the above scheme, a hopper arranged on a conveyor belt is used to realize conveying feeding of the hopper in front of the furnace of the biomass power plant. However, since the hopper is not provided with an auxiliary unloading mechanism and the larger the biomass fuel, the easier it is to cause blockage in the hopper, it may be inconvenient to transport the biomass fuel to the boiler.

[0005] To this end, a feeding device for the furnace silo of a biomass power plant is proposed, which has the advantage of smooth feeding of biomass fuel, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a feeding device for a furnace silo in a biomass power plant.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a feeding device for a silo in front of a biomass power plant furnace, comprising a climbing conveyor and a hopper, a conveyor belt is driven by a motor on the inner side of the climbing conveyor, and a plurality of baffles are equidistantly installed on the surface of the conveyor belt, the climbing conveyor is composed of a horizontal conveying part and an inclined conveying part, and a hopper is arranged above the horizontal conveying part of the climbing conveyor, both sides of the climbing conveyor frame are welded with fixed frames, and springs are fixedly installed in the fixed frames, a connecting rod is welded on the lower surface of the hopper, and the connecting rod extends to the fixed frame. A limiting column is welded to the inner part of the fixed frame, the connecting rod is abutted against the top of the spring, and the limiting column of the connecting rod is plugged into the top of the spring, a bracket is welded to the side of the hopper with the connecting rod, and a cylinder is fixedly installed on the surface of the bracket by bolts, the piston rod of the cylinder passes through the bracket and is fixedly connected to a fixing plate, and a baffle is welded on one side of the fixing plate, and an inclined end is provided on the part of the baffle extending to the inner side of the hopper, a support frame is welded to the outer wall of the hopper, and a vibration motor is fixedly installed in the support frame by bolts, and a movable chassis is welded to the bottom of the climbing conveyor.

[0008] As a further description of the above technical solution: a trumpet cover is arranged on the top of the hopper, and a yield opening is opened on the lower surface of the hopper corresponding to the baffle.

[0009] As a further description of the above technical solution: the bracket, cylinder, fixed plate and baffle are arranged in two groups, and the two groups of brackets, cylinders, fixed plates and baffles are symmetrical about the vertical center line of the hopper.

[0010] As a further description of the above technical solution: a guide rod is welded to a side of the fixing plate facing away from the baffle, and one end of the guide rod is interlaced and connected with the bracket.

[0011] As a further description of the above technical solution: the mobile chassis is composed of two groups of interconnected support frames, and universal wheels are installed at the bottom of the two groups of support frames, and the two groups of support frames correspond to the horizontal conveying part and the inclined conveying part of the climbing conveyor respectively.

[0012] As a further description of the above technical solution: a control panel is fixedly installed on the frame of the climbing conveyor, and the output end of the control panel is electrically connected to the cylinder and the vibration motor respectively.

[0013] As a further description of the above technical solution: the fixing frame is a rectangular structure, and the cross-section of the connecting rod is a square structure.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, a hopper is arranged above the horizontal conveying part of the climbing conveyor, and the hopper and the climbing conveyor are elastically connected by a fixed frame, a spring, a connecting rod and a limit column. When the biomass fuel in the silo in front of the furnace is transferred to the inside of the hopper, the conveyor belt of the climbing conveyor is started by a motor to move, so that the biomass fuel in the hopper is transferred to the boiler under the transmission action of the conveyor belt and its surface baffles, and the height fit with the boiler feed port is maintained by the setting of the inclined conveying part. In this process, the vibration motor in the support frame is started to make the vibration of the vibration motor directly It directly acts on the hopper and keeps the hopper in a continuous vibration state under the action of the spring in the fixed frame, thereby improving the smoothness of the hopper unloading and avoiding the blockage of biomass fuel in the hopper. At the same time, by starting the cylinder installed on the two brackets, the fixed plate fixed on the cylinder piston rod pushes the baffle into the hopper, so that the baffles corresponding to the two brackets move toward each other until the inclined ends of the two baffles abut against each other, thereby preventing the furnace hopper from continuing to unload materials, so that timely interception can be carried out according to the actual feeding situation of the boiler to avoid excessive feeding of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a feeding device for a biomass power plant furnace silo according to the utility model;

[0017] Figure 2 This is a top view of a feeding device for a biomass power plant furnace silo according to the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the hopper structure of a feeding device for a biomass power plant furnace silo.

[0019] Legend:

[0020] 1. Slope conveyor; 2. Hopper; 3. Inclined conveying part; 4. Mobile chassis; 5. Bracket; 6. Support frame; 7. Vibration motor; 8. Fixed frame; 9. Spring; 10. Connecting rod; 11. Limiting column; 12. Conveyor belt; 13. Baffle; 14. Cylinder; 15. Baffle; 16. Inclined end; 17. Fixed plate; 18. Guide rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] According to an embodiment of the utility model, a feeding device for a furnace silo in a biomass power plant is provided.

[0023] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3 As shown, a feeding device for a furnace silo in a biomass power plant according to an embodiment of the utility model comprises a climbing conveyor 1 and a hopper 2. A conveyor belt 12 is driven by a motor on the inner side of the climbing conveyor 1, and a plurality of baffles 13 are equidistantly installed on the surface of the conveyor belt 12. The climbing conveyor 1 is composed of a horizontal conveying part and an inclined conveying part 3, and the hopper 2 is arranged above the horizontal conveying part of the climbing conveyor 1. Fixed frames 8 are welded on both sides of the frame of the climbing conveyor 1, and a spring 9 is fixedly installed in the fixed frame 8. A connecting rod 10 is welded on the lower surface of the hopper 2, and a limiting column 11 is welded on the part of the connecting rod 10 extending to the inner side of the fixed frame 8, the connecting rod 10 is abutted against the top of the spring 9, and the limiting column 11 of the connecting rod 10 is plugged into the top of the spring 9. A bracket 5 is welded on the side of the hopper 2 with the connecting rod 10, and a cylinder 14 is fixedly installed on the surface of the bracket 5 by bolts. , the piston rod of the cylinder 14 passes through the bracket 5 and is fixedly connected with a fixing plate 17, and a baffle 15 is welded on one side of the fixing plate 17. The part of the baffle 15 extending to the inner side of the hopper 2 is provided with an inclined end 16, and a support frame 6 is welded on the outer wall of the hopper 2, and a vibration motor 7 is fixedly installed in the support frame 6 by bolts. A mobile chassis 4 is welded to the bottom of the climbing conveyor 1, and a gap is reserved between the hopper 2 and the conveyor belt 12, which is beneficial to the vibration of the hopper 2 on the one hand, and convenient for the discharge and transmission of biomass fuel on the other hand. The principle of the climbing conveyor 1 is an existing known technology, and there are mature products, so no further explanation is made on its transmission structure and principle, and the climbing conveyor 1 is controlled by manually starting and shutting down the switch, and the wiring diagram of the power element and the provision of power supply belong to the common knowledge in this field, so the utility model does not explain the control method and wiring arrangement in detail;

[0024] In one embodiment, a trumpet cover is provided on the top of the hopper 2, and a clearance opening is opened on the lower surface of the hopper 2 corresponding to the baffle 13. The setting of the clearance opening can make way for the baffle 13 and the biomass fuel, and the trumpet cover can prevent the biomass fuel from scattering.

[0025] In one embodiment, two groups of brackets 5, cylinders 14, fixed plates 17 and baffles 15 are provided, and the two groups of brackets 5, cylinders 14, fixed plates 17 and baffles 15 are symmetrical about the vertical center line of the hopper 2. Two groups of brackets 5, cylinders 14, fixed plates 17 and baffles 15 are used to form a material blocking structure in the hopper 2 to temporarily store the biomass fuel falling from the hopper so as to continue to feed the biomass fuel later.

[0026] In one embodiment, a guide rod 18 is welded to a side of the fixing plate 17 facing away from the baffle 15 , and one end of the guide rod 18 is inserted and connected to the bracket 5 . The arrangement of the guide rod 18 can increase the smoothness of the movement of the baffle 15 .

[0027] In one embodiment, the mobile base frame 4 is composed of two groups of interconnected support frames 6, and universal wheels are installed at the bottom of the two groups of support frames 6, and the two groups of support frames 6 respectively correspond to the horizontal conveying part and the inclined conveying part 3 of the climbing conveyor 1. Through the setting of the mobile base frame 4, the climbing conveyor 1 can be moved to facilitate the adjustment of the feeding position.

[0028] In one embodiment, a control panel is fixedly mounted on the frame of the climbing conveyor 1, and the output ends of the control panel are electrically connected to the cylinder 14 and the vibration motor 7 respectively. The control circuit of the control panel can be realized through simple programming by technicians in this field, which is common knowledge in the field. It is only used without modification, so the control method and circuit connection are not described in detail. The control panel is connected to an external power supply through a wire to facilitate power supply.

[0029] In one embodiment, the fixing frame 8 is a rectangular structure, and the cross section of the connecting rod 10 is a square structure. The connecting rod 10 with a square cross section is used to ensure a stable connection with the spring 9.

[0030] Working principle:

[0031] When in use, firstly install the hopper 2 of the climbing conveyor 1 below the discharge port of the silo in front of the furnace through the mobile base frame 4, and arrange the hopper 2 above the horizontal conveying part of the climbing conveyor 1, and the hopper 2 and the climbing conveyor 1 are elastically connected by a fixed frame 8, a spring 9, a connecting rod 10 and a limit column 11. When the biomass fuel in the silo in front of the furnace is transferred to the inside of the hopper 2, the conveyor belt 12 of the climbing conveyor 1 is started by the motor to move, so that the biomass fuel in the hopper 2 is transferred to the boiler under the transmission action of the conveyor belt 12 and its surface baffle 13, and the height fit with the boiler feed port is maintained by the setting of the inclined conveying part 3. In this process, the vibration motor in the support frame 6 is started The machine 7 causes the vibration of the vibration motor 7 to directly act on the hopper 2, and the hopper 2 is kept in a continuous vibration state under the action of the spring 9 in the fixed frame 8, so as to maintain the smoothness of the material discharge from the hopper 2 and prevent blockage. When the biomass fuel needs to be stopped, the cylinder 14 installed on the two brackets 5 is started to cause the fixed plate 17 fixed on the piston rod of the cylinder 14 to push the baffle 15 deep into the hopper 2, so that the baffles 15 corresponding to the two brackets 5 move toward each other until the inclined ends 16 of the two baffles 15 abut against each other, so as to prevent the furnace front hopper from continuing to discharge the material, and close the climbing conveyor 1, so as to stop the material in time according to the actual feeding situation of the boiler to avoid excessive feeding of the boiler.

[0032] 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, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or 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 feeding device for a biomass power plant furnace silo, comprising a climbing conveyor (1) and a hopper (2), characterized in that: The inner side of the climbing conveyor (1) is provided with a conveyor belt (12) driven by a motor, and a plurality of baffles (13) are equidistantly installed on the surface of the conveyor belt (12). The climbing conveyor (1) is composed of a horizontal conveying part and an inclined conveying part (3), and a hopper (2) is arranged above the horizontal conveying part of the climbing conveyor (1). Both sides of the frame of the climbing conveyor (1) are welded with a fixed frame (8), and a spring (9) is fixedly installed in the fixed frame (8). A connecting rod (10) is welded on the lower surface of the hopper (2), and a limiting column (11) is welded to the part of the connecting rod (10) extending to the inner side of the fixed frame (8), and the connecting rod (10) abuts against the top of the spring (9), and the connecting rod (10) is provided with a limiting column (11). The limiting column (11) of (10) is plugged into the top of the spring (9), the bracket (5) is welded to one side of the hopper (2) with the connecting rod (10), and a cylinder (14) is fixedly installed on the surface of the bracket (5) by bolts, the piston rod of the cylinder (14) passes through the bracket (5) and is fixedly connected to a fixing plate (17), and a baffle (15) is welded to one side of the fixing plate (17), and the part of the baffle (15) extending to the inner side of the hopper (2) is provided with an inclined end (16), the outer wall of the hopper (2) is welded to a support frame (6), and a vibration motor (7) is fixedly installed in the support frame (6) by bolts, and a movable chassis (4) is welded to the bottom of the climbing conveyor (1).

2. A biomass power plant furnace silo feeding device according to claim 1, characterized in that: A trumpet cover is arranged on the top of the hopper (2), and a clearance opening is provided on the lower surface of the hopper (2) corresponding to the baffle (13).

3. The feeding device for the front silo of a biomass power plant according to claim 1, characterized in that: The bracket (5), the cylinder (14), the fixed plate (17) and the baffle (15) are arranged in two groups, and the two groups of the bracket (5), the cylinder (14), the fixed plate (17) and the baffle (15) are symmetrical about the vertical center line of the hopper (2).

4. The feeding device for the furnace silo of a biomass power plant according to claim 1, characterized in that: A guide rod (18) is welded to a side of the fixing plate (17) facing away from the baffle (15), and one end of the guide rod (18) is interlacedly connected to the bracket (5).

5. The feeding device for the furnace silo of a biomass power plant according to claim 1, characterized in that: The movable chassis (4) is composed of two groups of mutually connected support frames (6), and the bottoms of the two groups of support frames (6) are both equipped with universal wheels, and the two groups of support frames (6) respectively correspond to the horizontal conveying part and the inclined conveying part (3) of the climbing conveyor (1).

6. The feeding device for the front silo of a biomass power plant according to claim 1, characterized in that: A control panel is fixedly mounted on the frame of the climbing conveyor (1), and the output end of the control panel is electrically connected to the cylinder (14) and the vibration motor (7) respectively.

7. The feeding device for the front silo of a biomass power plant according to claim 1, characterized in that: The fixing frame (8) is a rectangular structure, and the cross section of the connecting rod (10) is a square structure.

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