Efficient and clean biomass fuel feeding device

Abstract

The utility model discloses an efficient and clean biomass fuel feeding device which comprises a grab bucket machine (1), a biomass spiral stock bin (3), a conveying belt (4), a stokehole biomass stock bin (5), a plurality of groups of double-shaft spiral reclaimers (2), a plurality of groups of single-shaft spiral feeders (6) and a blanking pipe (8) which are sequentially arranged, and an electromagnetic iron remover (9) is arranged on the upper side of a discharge port of the conveying belt (4). A magnetic roller (10) is arranged on the lower side of a discharging port of the conveying belt (4), and an anti-backfire mechanism (7) is arranged on one side of the discharging pipe (8). The device not only can remove impurities from the biomass fuel, but also has better anti-backfire capability and good safety.

Description

Technical Field

[0001] This utility model relates to a feeding device, and more particularly to a highly efficient and clean biomass fuel feeding device. Background Technology

[0002] Biomass fuel refers to fuel made by burning biomass materials, primarily agricultural and forestry waste or industrial waste. It differs from fossil fuels. Under national policies and environmental standards, direct combustion of biomass is classified as a high-pollution fuel, permitted only for use in rural stoves and not in urban areas. Biomass energy serves as an important component for optimizing energy structure, improving the ecological environment, and developing a circular economy, based on distributed development and utilization, expanding market scale, accelerating technological progress, and eliminating outdated production capacity. However, biomass fuels are prone to containing metals or other components, leading to impurity accumulation in the furnace and frequent shutdowns for cleaning. Furthermore, the inconsistent combustion of biomass fuels can cause backfire in the furnace, posing safety hazards. Utility Model Content

[0003] The purpose of this invention is to provide a highly efficient and clean biomass fuel feeding device. It not only removes impurities from biomass fuel but also has good backfire prevention capabilities and high safety.

[0004] The technical solution of this utility model is as follows: a high-efficiency and clean biomass fuel feeding device, comprising a grab bucket, a biomass spiral silo, a conveyor belt, a biomass silo in front of the furnace, multiple sets of twin-shaft spiral feeders, multiple sets of single-shaft spiral feeders, and a discharge pipe arranged in sequence. An electromagnetic separator is provided on the upper side of the discharge port of the conveyor belt, a magnetic roller is provided on the lower side of the discharge port of the conveyor belt, and a backfire prevention mechanism is provided on one side of the discharge pipe.

[0005] In the aforementioned efficient and clean biomass fuel feeding device, the number of the twin-screw reclaimers is 4 sets, and the twin-screw reclaimers are open-top twin-screw reclaimers.

[0006] In the aforementioned efficient and clean biomass fuel feeding device, the cross-sectional area of ​​the biomass silo in front of the furnace continuously increases from top to bottom, and an expansion section corresponding to the twin-shaft screw feeder is provided on the front side of the lower end of the biomass silo in front of the furnace.

[0007] In the aforementioned efficient and clean biomass fuel feeding device, the biomass spiral hopper includes a hopper, and the hopper is equipped with multiple sets of horizontally and parallel spiral augers.

[0008] In the aforementioned efficient and clean biomass fuel feeding device, the feed pipe is provided with multiple sets of horizontally and parallelly arranged guide mechanisms.

[0009] In the aforementioned efficient and clean biomass fuel feeding device, the backfire prevention mechanism includes a pushing mechanism located on one side of the feeding pipe, and a backfire prevention baffle corresponding to the position of the guiding mechanism is provided on one side of the pushing mechanism.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] This application utilizes a grab bucket crane to grab biomass fuel from the silo and transport it to a biomass spiral silo. The biomass fuel is initially distributed through the spiral silo and then conveyed via a conveyor belt. The conveyor belt outlet is equipped with an electromagnetic separator and a magnetic roller to remove magnetic materials and iron from the biomass fuel, reducing the frequency of boiler shutdowns for cleaning. Furthermore, an anti-backfire mechanism is installed on one side of the discharge pipe to prevent flame backflow inside the furnace, ensuring good safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model;

[0014] Figure 3 This is a partial enlarged view of the present invention.

[0015] The labels in the attached diagram are as follows: 1-Grab bucket machine, 2-Dual-shaft screw reclaimer, 3-Biomass screw silo, 4-Conveyor belt, 5-Boiler front biomass silo, 6-Single-shaft screw feeder, 7-Anti-backfire mechanism, 8-Discharge pipe, 9-Electromagnetic separator, 10-Magnetic drum, 11-Hopper, 12-Screw auger, 13-Expansion section, 14-Guiding mechanism, 15-Pushing mechanism, 16-Anti-backfire baffle, 17-Baffle cover. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example. A highly efficient and clean biomass fuel feeding device, configured as follows: Figure 1-3 As shown, the structure includes a grab bucket machine 1, a biomass spiral silo 3, a conveyor belt 4, a biomass silo 5 in front of the furnace, multiple sets of twin-shaft spiral feeders 2, multiple sets of single-shaft spiral feeders 6, and a discharge pipe 8 arranged in sequence. An electromagnetic separator 9 is provided on the upper side of the discharge port of the conveyor belt 4, a magnetic roller 10 is provided on the lower side of the discharge port of the conveyor belt 4, and a backfire prevention mechanism 7 is provided on one side of the discharge pipe 8.

[0018] The number of the twin-screw feeders 2 is 4 sets, and the twin-screw feeders 2 are open-top twin-screw feeders.

[0019] The cross-sectional area of ​​the pre-furnace biomass silo 5 increases continuously from top to bottom, and the lower front side of the pre-furnace biomass silo 5 is provided with an expansion section 13 corresponding to the twin-shaft screw feeder 2.

[0020] The biomass spiral hopper 3 includes a hopper 11, in which multiple sets of horizontally and parallel spiral augers 12 are provided.

[0021] The material discharge pipe 8 is provided with multiple sets of horizontally and parallelly arranged guide mechanisms 14.

[0022] The backfire prevention mechanism 7 includes a pushing mechanism 15 located on one side of the material discharge pipe 8, and a backfire prevention baffle 16 located on one side of the pushing mechanism 15 corresponding to the position of the guiding mechanism 14.

[0023] The conveyor belt 4 is provided with a baffle 17.

[0024] The working principle of this application is as follows: During the production process, the enterprise sets up a biomass fuel storage workshop in the factory area. Pre-treated finished biomass fuel from outside the factory is transported by vehicle and stacked in the workshop's silo. This application uses a grab bucket 1 to grab the biomass fuel from the silo. The grab bucket 1 can transport the biomass fuel to the biomass spiral silo 3. The spiral auger in the biomass spiral silo 3 can perform preliminary distribution of the biomass fuel. Then, the biomass fuel falls onto the conveyor belt 4 and is transported by the conveyor belt 4. The conveyor belt 4 is equipped with a baffle 17 to prevent dust leakage and environmental pollution. An electromagnetic separator 9 is installed on the upper side of the discharge port of the conveyor belt 4, and a magnetic roller 10 is installed on the lower side of the discharge port of the conveyor belt 4. This removes magnetic materials and iron from the biomass fuel, preventing such impurities from accumulating in the furnace, which would increase the frequency of furnace cleaning and reduce work efficiency. Furthermore, the conveyor belt 4 of this application is equipped with an electronic belt scale to detect the amount of biomass fuel transported. After being cleaned by the electromagnetic separator 9 and the magnetic drum 10, the biomass fuel falls into the pre-furnace biomass silo 5. The cross-sectional area of ​​the pre-furnace biomass silo 5 increases from top to bottom, and an expansion section 13 is provided at the bottom, so that it can match the upper opening of the twin-screw reclaimer 2. The twin-screw reclaimer 2 effectively transports the biomass fuel. There are 4 sets of twin-screw reclaimers 2, which are closely fitted to each other, so as to prevent impurities from falling from the gaps of the twin-screw reclaimers 2. Next, the biomass fuel will fall from the outlet of the twin-screw reclaimer 2 through a conduit to the inlet of the single-screw feeder 6, and then be conveyed by the single-screw feeder 6 to the discharge pipe 8. The biomass fuel is further conveyed to the incinerator through the discharge pipe 8. In order to prevent the flame from flowing back through the discharge pipe 8 during the combustion process in the incinerator, this application further provides a flashback mechanism 7 in the discharge pipe 8. The flashback baffle 16 is driven by the pushing mechanism 15 to move in the discharge pipe 8. The pushing mechanism can be a hydraulic pushing mechanism, a pneumatic pushing mechanism, or a pneumatic pushing mechanism. The feed pipe 8 is equipped with a guide mechanism 14 corresponding to the anti-backfire baffle 16. The guide mechanism is located on the lower side of the anti-backfire baffle 16. The guide mechanism 14 can be a support block or support wheel set on the side wall of the feed pipe 8, or it can be a guide roller connecting the two inner side walls. It is used to support the anti-backfire baffle, prevent the biomass fuel falling from the upper side from accumulating on the anti-backfire baffle 16, and prevent the anti-backfire baffle from deforming or tilting due to excessive load, thus improving reliability.

Claims

1. A highly efficient and clean biomass fuel feeding device, characterized in that: The system includes a grab bucket machine (1), a biomass spiral silo (3), a conveyor belt (4), a biomass silo in front of the furnace (5), multiple sets of twin-shaft spiral feeders (2), multiple sets of single-shaft spiral feeders (6), and a discharge pipe (8) arranged in sequence. An electromagnetic separator (9) is provided on the upper side of the discharge port of the conveyor belt (4), a magnetic roller (10) is provided on the lower side of the discharge port of the conveyor belt (4), and a backfire prevention mechanism (7) is provided on one side of the discharge pipe (8).

2. The efficient and clean biomass fuel feeding device according to claim 1, characterized in that: The number of the twin-screw feeders (2) is 4 sets, and the twin-screw feeders (2) are open-top twin-screw feeders.

3. The efficient and clean biomass fuel feeding device according to claim 1, characterized in that: The cross-sectional area of ​​the pre-furnace biomass silo (5) increases continuously from top to bottom, and the pre-furnace biomass silo (5) is provided with an expansion section (13) corresponding to the twin-shaft screw feeder (2) at the lower front side.

4. The efficient and clean biomass fuel feeding device according to claim 1, characterized in that: The biomass spiral silo (3) includes a hopper (11), and the hopper (11) is provided with multiple sets of horizontally and parallel spiral augers (12).

5. The efficient and clean biomass fuel feeding device according to claim 1, characterized in that: The material drop tube (8) is provided with multiple sets of horizontal and parallel guide mechanisms (14).

6. The efficient and clean biomass fuel feeding device according to claim 1, characterized in that: The backfire prevention mechanism (7) includes a pushing mechanism (15) located on one side of the material drop pipe (8), and a backfire prevention baffle (16) corresponding to the position of the guiding mechanism (14) is provided on one side of the pushing mechanism (15).

7. The efficient and clean biomass fuel feeding device according to claim 1, characterized in that: The conveyor belt (4) is provided with a baffle (17).

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