Steam and air assisted mixing mechanism of downdraft biomass gasifier

Abstract

The utility model discloses a steam and air assisted mixing mechanism of a downdraft biomass gasification furnace, which comprises a base, a furnace body arranged on the base, a hollow ring disc arranged in the furnace body, a plurality of vertical rods arranged in a circumferential array on the ring disc, a plurality of pipe fittings arranged in a linear array on the vertical rods, and a plurality of air inlets arranged on the pipe fittings. The pipe fitting is provided with a plurality of air injection holes which are arranged in a circumferential array mode, the base is provided with a pressurizing box, the pressurizing box is provided with a connecting pipe, and the connecting pipe is communicated with the pipe fitting. The utility model provides a steam and air assisted mixing mechanism of a downdraft biomass gasifier. Gas reaction is achieved through the furnace body on the base, transmission of external gas is achieved through the annular disc and the pressurizing box on the furnace body, transmission of gas is achieved through the vertical rods connected with the annular disc, gas is sprayed into the furnace body through the pipe fittings on the vertical rods, it needs to be explained that the connecting pipes are evenly distributed in the furnace body, and the connecting pipes are evenly distributed in the furnace body. And paint can be sprayed at all heights in the furnace body.

Description

Technical Field

[0001] The utility model relates to the technical field of downdraft biomass gasifiers, in particular to a steam and air auxiliary mixing mechanism of a downdraft biomass gasifier. Background Art

[0002] Downdraft biomass gasifier is a highly efficient biomass energy conversion technology that converts biomass into combustible gas through a specific reaction process, which can then be used for power generation, heating and other purposes. In order to improve gasification efficiency and gas quality, optimizing the mixing of steam and air is a crucial step.

[0003] According to the publication (announcement) number: CN202829965U, the publication (announcement) date: 2013-03-27, a kind of updraft fixed bed biomass gasifier disclosed is composed of a feed pipe, a distributor, a throat section, a gasifier wall, a grate, and an ash hopper. The biomass raw material enters through the feed pipe, is evenly distributed in the furnace through the distributor, and forms a material layer seal in the throat section; the air enters the gasifier from the bottom through the grate and reacts with the biomass raw material to generate gas that leaves the gasifier through the gas outlet on the side wall of the throat section. The gasifier controls the reaction temperature of the furnace through the secondary air and bottom steam set at the bottom to ensure the stable operation of the system, and the sealing of the biomass raw material to the gas is achieved through the throat section set at the top.

[0004] It is known from the above patents and prior art that a downdraft gasifier uses a gasification device at the bottom to add gas to the gasifier. If the gas is added at the bottom, the concentration of the gas at the bottom is higher than that at the top, thereby affecting the conversion of steam and air. Utility Model Content

[0005] The utility model aims to provide a steam and air auxiliary mixing mechanism for a downdraft biomass gasifier, which enables the air to enter the furnace body and be more evenly distributed.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steam and air auxiliary mixing mechanism of a downdraft biomass gasifier, comprising a base, on which a furnace body is arranged, a ring disk is arranged in the furnace body, the ring disk is hollow, a plurality of vertical rods arranged in a circumferential array are arranged on the ring disk, a plurality of pipes arranged in a linear array are arranged on the vertical rod, and a plurality of gas injection holes arranged in a circumferential array are opened on the pipe;

[0007] A pressurizing box is arranged on the base, a connecting pipe is arranged on the pressurizing box, and the connecting pipe is communicated with the pipe fitting.

[0008] Preferably, a slide groove is provided on the furnace body, a collection box is slidably arranged in the slide groove, and a handle is provided on the collection box.

[0009] Preferably, a collecting trough is provided on the collecting box, and a scraper is arranged in the collecting trough.

[0010] Preferably, a connecting plate is provided in the collecting trough, a vertical plate is provided on the connecting plate, and the scraper is slidably provided in the collecting trough.

[0011] Preferably, an air cavity is provided on the pipe.

[0012] In the above technical scheme, the utility model provides a steam and air assisted mixing mechanism for a downdraft biomass gasification furnace, which has the following beneficial effects: gas reaction is realized through the furnace body on the base, external gas transmission is realized through the ring disk and the pressurizing box on the furnace body, gas transmission is realized through the vertical rod connected to the ring disk, and gas spraying into the furnace body is realized through the pipe fittings on the vertical rod. It should be noted that the connecting pipes are evenly distributed in the furnace body, and each height in the furnace body can be sprayed to make the gas reaction in the furnace body more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0015] Figure 2 A schematic diagram of a top view structure provided for an embodiment of the utility model;

[0016] Figure 3 A schematic diagram of the structure of the furnace provided in the embodiment of the utility model;

[0017] Figure 4 A schematic cross-sectional structure diagram provided for an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] Base; 11. Pressurizing box; 12. Connecting pipe; 2. Furnace body; 20. Slide; 200. Handle; 21. Ring plate; 22. Vertical rod; 221. Air cavity; 23. Pipe fitting; 24. Jet hole; 25. Collecting box; 26. Vertical plate; 27. Collecting trough; 28. Scraper; 29. ​​Connecting plate. DETAILED DESCRIPTION

[0020] 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 in conjunction with the accompanying drawings.

[0021] like Figure 1-4 As shown, a steam and air auxiliary mixing mechanism of a downdraft biomass gasifier comprises a base 1, on which a furnace body 2 is arranged, a ring disk 21 is arranged in the furnace body 2, the ring disk 21 is hollow, a plurality of vertical rods 22 arranged in a circumferential array are arranged on the ring disk 21, a plurality of pipe fittings 23 arranged in a linear array are arranged on the vertical rods 22, and a plurality of gas injection holes 24 arranged in a circumferential array are opened on the pipe fittings 23;

[0022] A pressurizing box 11 is disposed on the base 1 , and a connecting pipe 12 is disposed on the pressurizing box 11 . The connecting pipe 12 is communicated with the pipe fitting 23 .

[0023] Specifically, when in use, the material raw materials are placed in the furnace body 2, and then the furnace body 2 is heated to make the material raw materials react, and then the pressurizing box 11 is opened to allow the pressurizing box 11 to inflate the connecting pipe 12, and after inflation, it enters the ring disk 21, and the gas in the ring disk 21 enters the vertical rod 22, and enters the air cavity 221 opened on the vertical rod 22, and is transferred to the pipe fitting 23 through the air cavity 221, and the pipe fitting 23 passes through the air injection hole 24, and the furnace body 2 is injected with gas through the air injection hole 24. It should be noted that the pipe fittings 23 are evenly distributed on the vertical rod 22, and the vertical rod 22 extends to the top in the furnace body 2, so when injecting gas, it can be evenly distributed in the furnace body 2.

[0024] In the above scheme, the gas reaction is realized through the furnace body 2 on the base 1, the external gas is transferred through the ring disk 21 and the pressurized box 11 on the furnace body 2, the gas transfer is realized through the vertical rod 22 connected to the ring disk 21, and the gas is sprayed into the furnace body 2 through the pipe fitting 23 on the vertical rod 22. It should be noted that the connecting pipe 12 is evenly distributed in the furnace body 2, and paint can be sprayed at various heights in the furnace body 2 to make the gas reaction in the furnace body 2 more uniform.

[0025] As an embodiment further provided by the present invention, according to Figure 1 and Figure 2 As shown, a slide groove 20 is provided on the furnace body 2 , a collection box 25 is slidably provided in the slide groove 20 , and a handle 200 is provided on the collection box 25 .

[0026] Specifically, after the raw materials react in the furnace body 2, the handle 200 is pulled to pull out the collection box 25 to take out the raw materials after the reaction.

[0027] As an embodiment further provided by the present invention, according to Figure 2 As shown, a collecting tank 27 is provided on the collecting box 25 , and a scraper 28 is provided in the collecting tank 27 .

[0028] Furthermore, a connecting plate 29 is provided in the collecting tank 27 , a vertical plate 26 is provided on the connecting plate 29 , and a scraper 28 is slidably provided in the collecting tank 27 .

[0029] Specifically, the vertical plate 26 is pulled to drive the scraper 28 to move upward, and scrape the raw materials in the collecting tank 27 and the raw materials remaining on the inner wall of the collecting tank 27 .

[0030] As an embodiment further provided by the present invention, according to Figure 2 As shown, an air cavity 221 is defined on the pipe 23 .

[0031] Specifically, the air cavity 221 transmits gas, which not only ensures its sealing, but also enables the pipe 23 and the pressurized box 11 to communicate with each other.

[0032] Working principle: When in use, the raw material is placed in the furnace body 2, and then the furnace body 2 is heated to make the raw material react, and then the pressurizing box 11 is opened to make the pressurizing box 11 inflate the connecting pipe 12, and the gas enters the ring disk 21 after inflation, and the gas in the ring disk 21 enters the vertical rod 22, and enters the air cavity 221 opened on the vertical rod 22, and is transferred to the pipe 23 through the air cavity 221, and the pipe 23 passes through the air jet hole 24, and the air jet hole 24 inflates the furnace body 2. It should be noted that the pipe fittings 23 are evenly distributed on the vertical rods 22, and the vertical rods 22 extend to the top of the furnace body 2, so when injecting gas, they can be evenly distributed in the furnace body 2, and then the vertical plate 26 is pulled to drive the scraper 28 to move upward, and the material raw materials in the collecting tank 27 are scraped, and the material raw materials remaining on the inner wall of the collecting tank 27 are scraped, and finally the handle 200 is pulled to drive the collection box 25 to be pulled out to take out the reacted material raw materials.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions 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 steam and air-assisted mixing mechanism for a downdraft biomass gasifier, characterized in that: The furnace body (2) comprises a base (1) on which a furnace body (2) is arranged, a ring disk (21) is arranged inside the furnace body (2), the ring disk (21) is hollow, a plurality of vertical rods (22) arranged in a circular array are arranged on the ring disk (21), a plurality of pipes (23) arranged in a linear array are arranged on the vertical rods (22), and a plurality of gas injection holes (24) arranged in a circular array are opened on the pipes (23); A pressurizing box (11) is provided on the base (1), a connecting pipe (12) is provided on the pressurizing box (11), and the connecting pipe (12) is connected to the pipe fitting (23).

2. The steam and air-assisted mixing mechanism of a downdraft biomass gasifier according to claim 1, characterized in that: The furnace body (2) is provided with a slide groove (20), a collection box (25) is slidably arranged in the slide groove (20), and a handle (200) is arranged on the collection box (25).

3. The steam and air-assisted mixing mechanism of a downdraft biomass gasifier according to claim 2, characterized in that: The collecting box (25) is provided with a collecting groove (27), and a scraper (28) is arranged in the collecting groove (27).

4. The steam and air-assisted mixing mechanism of a downdraft biomass gasifier according to claim 3, characterized in that: A connecting plate (29) is arranged in the collecting trough (27), a vertical plate (26) is arranged on the connecting plate (29), and the scraper (28) is slidably arranged in the collecting trough (27).

5. The steam and air-assisted mixing mechanism of a downdraft biomass gasifier according to claim 1, characterized in that: The tube (23) is provided with an air cavity (221).

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