Fire grate driving mechanism of downdraft biomass gasification furnace

Abstract

The utility model discloses a fire grate driving mechanism of a downdraft biomass gasification furnace, and particularly relates to the technical field of downdraft biomass gasification furnaces, a plurality of inclined plates which are arranged in a linear array are arranged in a furnace body, a collecting box is arranged at the bottom of the furnace body, a discharge port is formed in the bottom of a feeding hopper, a cover plate is arranged on the furnace body, and the cover plate is arranged on the furnace body. And a feeding hole is formed in the cover plate. According to the fire grate driving mechanism of the downdraft biomass gasification furnace, the furnace body is fixed through the fixing frame, the furnace body is suspended on the fixing frame through the plates on the furnace body, the number and the speed during feeding are reduced through the inclined plates arranged in the furnace body, biological raw materials are fully reacted, and the reaction efficiency is improved. Ash generated after biological raw materials react is collected through the collecting box at the bottom of the furnace body, the feeding amount is limited through the feeding hopper in the furnace body, the feeding amount is kept at a stable value, the furnace body is sealed through the cover plate on the furnace body, and feeding is conducted through the feeding opening in the furnace body.

Description

Technical Field

[0001] The utility model relates to the technical field of downdraft biomass gasifiers, in particular to a grate driving mechanism of a downdraft biomass gasifier. Background Art

[0002] A downdraft biomass gasifier converts biomass into combustible gas. By controlling the air supply to achieve incomplete combustion, it converts low-value solid biomass into high-value gaseous fuel. The gas produced during the gasification process can be used for industrial or residential purposes, or to power internal combustion engines for power generation. Downdraft gasifiers are widely used due to their simple structure, easy operation, and adaptability.

[0003] According to the disclosure (announcement) number: CN201648327U, the disclosure (announcement) date: 2010-11-24, a central suction biomass gasifier is disclosed, including a furnace body, a pressing device, an ash removal device and a wet ash removal device arranged below the furnace body. The inner cavity of the furnace body is composed of a storage chamber, a tar filter chamber and a gasification chamber from top to bottom. A feeding port connected to an external feeding device is provided at the top of the storage chamber, and a gas channel connected to the tar filter chamber is provided between the storage chamber and the inner wall of the furnace body. The pressing device is arranged in the tar filter chamber and is connected to a first drive device outside the furnace body through a first transmission shaft. The ash removal device is arranged in the gasification chamber and is connected to a second drive device outside the furnace body through a second transmission shaft. The gasification chamber is connected to the wet ash removal device through an ash removal tray, and a blast device is provided at the lower part of the furnace body.

[0004] It can be seen from the above-mentioned patents and prior art that when a gasifier is in use, the biological raw materials need to be placed downward on the furnace cover, and then pass through the drying layer, pyrolysis layer, oxidation layer and reduction layer. During the gasification process, the raw materials lose moisture in the drying layer, volatile matter is precipitated in the pyrolysis layer and undergoes pyrolysis reaction, and then an incomplete oxidation reaction occurs with oxygen in the air in the oxidation layer. Finally, the remaining char in the reduction zone reacts with carbon dioxide and water vapor in the gas to generate combustible gases such as carbon monoxide, hydrogen and methane. However, when feeding, if too much material is fed at one time, the biological raw materials will not react thoroughly. If less material is fed, the energy released in the gasifier will be wasted. Utility Model Content

[0005] The purpose of the utility model is to provide a grate driving mechanism for a downdraft biomass gasifier, which can maintain a stable feeding amount during feeding, so that the biological raw materials can fully react.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grate driving mechanism of a downdraft biomass gasification furnace, comprising a fixed frame and a furnace body arranged on the fixed frame, a plate member is provided on the furnace body, the plate member is provided on the fixed frame, a plurality of inclined plates arranged in a linear array are provided in the furnace body, a collecting box is provided at the bottom of the furnace body, a feeding hopper is provided at the entrance of the furnace body, a discharge port is provided at the bottom of the feeding hopper, a cover plate is provided on the furnace body, and a feeding port is provided on the cover plate.

[0007] Preferably, a bottom groove is provided at the bottom of the furnace body, and a supporting plate is rotatably arranged in the bottom groove.

[0008] Preferably, a fixing frame is included, a motor is provided on the fixing frame, an output end is provided on the motor, and the output end is provided on the supporting plate.

[0009] Preferably, a slide groove is provided on the collection box, and an ash collection box is slidably arranged in the slide groove.

[0010] Preferably, a notch is provided on the ash collecting box, and a handle is provided on the ash collecting box.

[0011] Preferably, a plurality of guide grooves arranged in a linear array are provided on each of the plurality of inclined plates.

[0012] Preferably, the fixing frame is provided with a plurality of fixing plates arranged in a linear array, and a support rod is provided at the bottom of the fixing plates.

[0013] Preferably, an air outlet pipe is provided on the furnace body.

[0014] In the above technical solution, the utility model provides a grate drive mechanism for a downdraft biomass gasification furnace, which has the following beneficial effects: the furnace body is fixed by a fixed frame, and the plate on the furnace body makes the furnace body suspended on the fixed frame, and the plurality of inclined plates arranged in the furnace body can reduce the amount and speed of feeding, so that the biological raw materials can fully react, and the ash after the reaction of the biological raw materials is collected by the collection box at the bottom of the furnace body, and the feeding amount is limited by the feeding hopper in the furnace body, so that the feeding amount is kept at a stable value, the furnace body is sealed by the cover plate on the furnace body, and the feeding is carried out through the feeding port on the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present utility model;

[0017] Figure 2 A schematic cross-sectional view of an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure inside the furnace body provided by an embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 1. Furnace body; 10. Fixed frame; 11. Plate; 12. Fixed plate; 13. Support rod; 14. Cover plate; 15. Feeding port; 16. Collection box; 160. Chute; 17. Exhaust pipe; 2. Feeding hopper; 21. Discharge port; 22. Inclined plate; 221. Guide groove; 23. Bottom groove; 24. Loading plate; 26. Ash collecting box; 27. Notch; 28. Handle; 3. Motor; 31. Output end. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown, a grate drive mechanism of a downdraft biomass gasifier includes a fixed frame 10 and a furnace body 1 arranged on the fixed frame 10, a plate 11 is provided on the furnace body 1, and the plate 11 is provided on the fixed frame 10, a plurality of inclined plates 22 arranged in a linear array are provided in the furnace body 1, a collecting box 16 is provided at the bottom of the furnace body 1, a feeding hopper 2 is provided at the entrance of the furnace body 1, a discharge port 21 is provided at the bottom of the feeding hopper 2, a cover plate 14 is provided on the furnace body 1, and a feeding port 15 is provided on the cover plate 14.

[0023] Specifically, when in use, the biological raw material is fed into the furnace body 1 through the feeding port 15 on the cover plate 14, and then the biological raw material will enter the feeding hopper 2 in the furnace body 1, and enter the discharge port 21 at the bottom of the feeding hopper 2, and then enter the furnace body 1, and will fall on the inclined plate 22. It should be noted that the inclined plate 22 is tilted and arranged on the side wall of the furnace body 1, and the inclined plate 22 is symmetrically arranged on the inner wall of the furnace body 1, and is intermittently arranged. The outlet of the first inclined plate 22 is connected to the inlet of the second inclined plate 22. At the same time, each inclined plate 22 has a different reaction area. After the biological raw material reacts, it will fall into the collection box 16 at the bottom of the furnace body 1 for collection.

[0024] In the above scheme, the furnace body 1 is fixed by the fixing frame 10, and the plate 11 on the furnace body 1 makes the furnace body 1 suspended on the fixing frame 10. The multiple inclined plates 22 arranged in the furnace body 1 can reduce the amount and speed of feeding, so that the biological raw materials can fully react. The ash after the reaction of the biological raw materials is collected by the collection box 16 at the bottom of the furnace body 1. The feeding hopper 2 in the furnace body 1 can limit the feeding amount to keep the feeding amount at a stable value. The furnace body 1 is sealed by the cover plate 14 on the furnace body 1, and the feeding is carried out through the feeding port 15 on the furnace body 1.

[0025] As an embodiment further provided by the present invention, according to Figure 1 and Figure 2 As shown, a bottom groove 23 is provided at the bottom of the furnace body 1 , and a carrying plate 24 is rotatably arranged in the bottom groove 23 .

[0026] Specifically, the ash after the biological reaction will fall onto the carrying plate 24 on the bottom trough 23 .

[0027] As an embodiment further provided by the present invention, according to Figure 2 As shown, it includes a fixing frame 10 , a motor 3 is arranged on the fixing frame 10 , an output end 31 is arranged on the motor 3 , and the output end 31 is arranged on the carrying plate 24 .

[0028] Specifically, when a large amount of ash is collected, the output terminal 31 of the motor 3 rotates and causes the carrying plate 24 to deflect 180 degrees to drop the ash into the collection box 16 at the bottom.

[0029] As an embodiment further provided by the present invention, according to Figure 2 and Figure 3 As shown, the collection box 16 is provided with a slide groove 160 , and the ash collection box 26 is slidably arranged in the slide groove 160 .

[0030] Specifically, after the ash enters the collection box 16 , it will fall into the ash collection box 26 .

[0031] As an embodiment further provided by the present invention, according to Figure 2 and Figure 3 As shown, a notch 27 is provided on the ash receiving box 26 , and a handle 28 is provided on the ash receiving box 26 .

[0032] Specifically, the handle 28 is pulled out to pull out the ash box 26 and the ash is cleaned. It should be noted that water is provided in the ash box 26, and the high-temperature ash will ignite when it comes into contact with air.

[0033] As an embodiment further provided by the present invention, according to Figure 2 and Figure 3 As shown, the plurality of inclined plates 22 are each provided with a plurality of guide slots 221 arranged in a linear array.

[0034] Specifically, after the biological raw material falls on the inclined plate 22 , it will be guided by the guide groove 221 , which also reduces the falling speed of the biological raw material.

[0035] As an embodiment further provided by the present invention, according to Figure 1 and Figure 2 As shown, a plurality of fixing plates 12 arranged in a linear array are provided on the fixing frame 10 , and a support rod 13 is provided at the bottom of the fixing plate 12 .

[0036] Specifically, the fixing frame 10 is supported by the support rod 13 at the bottom of the fixing plate 12 .

[0037] As an embodiment further provided by the present invention, according to FIG. Figure 1 and Figure 2 As shown, an air outlet pipe 17 is provided on the furnace body 1.

[0038] Specifically, after the reaction of the biological raw materials is completed, the gas will be discharged through the gas outlet pipe 17 on the furnace body 1 and collected.

[0039] Working principle: When in use, the biological raw material is put into the furnace body 1 through the feeding port 15 on the cover plate 14, and then the biological raw material will enter the feeding hopper 2 in the furnace body 1, and enter the discharge port 21 at the bottom of the feeding hopper 2, and then enter the furnace body 1, and at the same time will fall on the inclined plate 22, and will be guided by the guide groove 221, and the speed of the biological raw material falling will also be reduced. It should be noted that the inclined plate 22 is tilted and arranged on the side wall of the furnace body 1, and the inclined plate 22 is symmetrically arranged on the inner wall of the furnace body 1, and is intermittently arranged. The outlet of the first inclined plate 22 is connected to the inlet of the second inclined plate 22, and each inclined plate 2 2 are different reaction areas. After the biological raw materials react, they will fall to the bottom of the furnace body 1 and onto the supporting plate 24 on the bottom groove 23. When a lot of ash is collected, the output end 31 on the motor 3 rotates and causes the supporting plate 24 to deflect 180° to drop the ash into the collection box 16 at the bottom. It will fall into the ash box 26, and then the handle 28 is pulled to pull the ash box 26 out to clean the ash. It should be noted that water is provided in the ash box 26. The high-temperature ash will ignite when it comes into contact with the air and be collected. At the same time, after the reaction of the biological raw materials is completed, the gas will be discharged through the outlet pipe 17 on the furnace body 1 for collection.

[0040] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A grate drive mechanism for a downdraft biomass gasifier, characterized in that: The invention comprises a fixing frame (10) and a furnace body (1) arranged on the fixing frame (10), wherein a plate (11) is arranged on the furnace body (1), and the plate (11) is arranged on the fixing frame (10), a plurality of inclined plates (22) arranged in a linear array are arranged in the furnace body (1), a collecting box (16) is arranged at the bottom of the furnace body (1), a feeding hopper (2) is arranged at the entrance of the furnace body (1), and a discharge port (21) is opened at the bottom of the feeding hopper (2), a cover plate (14) is arranged on the furnace body (1), and a feeding port (15) is arranged on the cover plate (14).

2. The grate drive mechanism of a downdraft biomass gasifier according to claim 1, characterized in that: A bottom groove (23) is provided at the bottom of the furnace body (1), and a bearing plate (24) is rotatably arranged in the bottom groove (23).

3. The grate drive mechanism of a downdraft biomass gasifier according to claim 2, characterized in that: It comprises a fixing frame (10), a motor (3) is provided on the fixing frame (10), an output end (31) is provided on the motor (3), and the output end (31) is provided on the bearing plate (24).

4. The grate drive mechanism of a downdraft biomass gasifier according to claim 1, characterized in that: The collecting box (16) is provided with a sliding groove (160), and an ash collecting box (26) is slidably arranged in the sliding groove (160).

5. The grate drive mechanism of a downdraft biomass gasifier according to claim 4, characterized in that: A notch (27) is provided on the ash collecting box (26), and a handle (28) is provided on the ash collecting box (26).

6. The grate drive mechanism of a downdraft biomass gasifier according to claim 1, characterized in that: A plurality of guide grooves (221) arranged in a linear array are provided on each of the plurality of inclined plates (22).

7. The grate drive mechanism of a downdraft biomass gasifier according to claim 1, characterized in that: A plurality of fixing plates (12) arranged in a linear array are provided on the fixing frame (10), and a support rod (13) is provided at the bottom of the fixing plate (12).

8. The grate drive mechanism of a downdraft biomass gasifier according to claim 1, characterized in that: An air outlet pipe (17) is provided on the furnace body (1).

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