CN113980704A

CN113980704A - Biomass gasification furnace

Info

Publication number: CN113980704A
Application number: CN202111459251.2A
Authority: CN
Inventors: 赵伟
Original assignee: Shenyang Tingyu Clean Energy Co ltd
Current assignee: Shenyang Tingyu Clean Energy Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-01-28
Anticipated expiration: 2041-12-02
Also published as: CN113980704B

Abstract

The invention discloses a biomass gasification furnace, and belongs to the field of gasification furnaces. A biomass gasification furnace comprises a combustion chamber and a conveying chamber, wherein the combustion chamber is connected with the conveying chamber through a pipeline, and a filter screen for furnace ash to fall is arranged at the position where the combustion chamber is communicated with the pipeline; the conveying chamber is internally provided with a conveying assembly and a treatment cavity, furnace ash falls into the conveying chamber and is conveyed into the treatment cavity through the conveying assembly, a cylinder is arranged in the treatment cavity, a rotating shaft is rotatably connected in the cylinder, the outer wall of the rotating shaft is provided with a spiral sheet, and the outer wall of the cylinder is provided with a discharge pipe communicated with the cylinder; the inner wall of the treatment cavity is connected with a first baffle and a push plate which are used for pushing furnace dust in a sliding manner; the invention can carry out centralized treatment on the furnace ash, avoids blockage caused by excessive accumulation of the furnace ash, thereby influencing the combustion speed, simultaneously prevents the furnace ash from floating in the air to pollute the environment, and is more beneficial to environmental protection.

Description

Biomass gasification furnace

Technical Field

The invention relates to the technical field of gasification furnaces, in particular to a biomass gasification furnace.

Background

The straw gas produced by the biomass gasification furnace belongs to green new energy and has strong vitality, and the raw materials produced by the plant gas are crop straws, forest and wood wastes, edible fungus residues, cattle, sheep and livestock manure and all combustible substances, so the straw gas is an inexhaustible renewable resource. Each farmer only needs 3-5 kg of plant raw materials every day to solve the problem of whole-day living energy utilization, and the plant raw materials are burnt like liquefied gas, so that the living mode of smoking and burning in rural areas in China can be completely changed, and the traditional firewood stove can be completely replaced by the liquefied gas.

At present, because the produced furnace dust of biomass combustion is more, and the furnace dust is piled up in the bottom of stove usually, piles up more and can influence the burning speed, and is not convenient for clear up, leads to the furnace dust to scatter to the air during the clearance easily, influences the environment, for this reason, we provide a biomass gasification stove to solve this problem.

Disclosure of Invention

The invention aims to solve the problem that furnace dust is inconvenient to clean in the prior art, and provides a biomass gasification furnace.

In order to achieve the purpose, the invention adopts the following technical scheme:

a biomass gasification furnace comprises a combustion chamber and a conveying chamber, wherein the combustion chamber is connected with the conveying chamber through a pipeline, and a filter screen for furnace ash to fall is arranged at the position where the combustion chamber is communicated with the pipeline;

the conveying chamber is internally provided with a conveying assembly and a treatment cavity, furnace ash falls into the conveying chamber and is conveyed into the treatment cavity through the conveying assembly, a cylinder is arranged in the treatment cavity, a rotating shaft is rotatably connected in the cylinder, the outer wall of the rotating shaft is provided with a spiral sheet, and the outer wall of the cylinder is provided with a discharge pipe communicated with the cylinder;

the inner wall of the treatment cavity is connected with a first baffle and a push plate which are used for pushing furnace dust in a sliding mode.

Preferably, the treatment chamber is internally provided with a conical block, the conveying chamber is internally provided with a cavity, one end of the rotating shaft, which is arranged in the cavity, is provided with a cam, the cavity is internally and respectively connected with a first sliding plate and a second sliding plate in a sliding manner, the first sliding plate and the second sliding plate are respectively abutted against the cam, liquid is arranged between the first sliding plate and the inner wall of the cavity, and first springs are respectively arranged between the first sliding plate and the inner wall of the cavity and between the second sliding plate and the inner walls of the two sides of the cavity.

Furthermore, a sliding groove is formed in the conveying chamber and communicated with the left side of the cavity through a connecting pipe, a piston is connected in the sliding groove in a sliding mode, a second spring is arranged between the piston and the inner wall of the sliding groove, and the first baffle is connected with the piston through a connecting rod.

Furthermore, one end of the first baffle, which is far away from the connecting rod, is connected with a second baffle through a third spring.

Further, be connected with the push rod on the second slide, be equipped with first shrinkage pool and second shrinkage pool in the carriage, the one end that first shrinkage pool was arranged in to the push rod is equipped with first sloping block, sliding connection has the second sloping block in the first shrinkage pool, all be equipped with the matched with inclined plane on first sloping block and the second sloping block, be equipped with the fourth spring between the top inner wall of second sloping block and first shrinkage pool, the top of second sloping block is equipped with the ejector pin.

Furthermore, the ejector rod is rotatably connected with a rotating rod, one end, far away from the ejector rod, of the rotating rod is rotatably connected with a fixing block, the fixing block is fixedly connected with the push plate, the rotating rod is arranged in the second concave hole, a fixing column is further arranged in the second concave hole, an elongated slot is formed in the rotating rod, and the fixing column is arranged in the elongated slot.

Preferably, the conveying assembly comprises two driving shafts arranged on the conveying chamber, the two driving shafts are connected with a conveying belt through rollers, a driven shaft is arranged in the conveying chamber, a brush matched with the conveying belt is arranged on the driven shaft, and the driving shafts are connected with the driven shaft through belts.

Furthermore, the bottom of the conveying chamber is obliquely arranged, a frame plate is arranged in the conveying chamber, a supporting plate is connected in the frame plate in a sliding mode, a scraper matched with the conveying belt is arranged on the supporting plate, and an elastic sheet is arranged between the supporting plate and the inner wall of the frame plate.

Preferably, a support rod is further arranged between the combustion chamber and the conveying chamber, an air inlet pipe is arranged on the outer wall of the pipeline, and a support block is arranged at the bottom of the conveying chamber.

Preferably, the outer wall of the combustion chamber is provided with a rotating door, the outer wall of the combustion chamber is also provided with a fixing plate, the fixing plate is provided with a spiral feeding pipe which is obliquely arranged, and the fixing plate is provided with a funnel connected with the spiral feeding pipe.

Compared with the prior art, the invention provides a biomass gasification furnace, which has the following beneficial effects:

1. this biomass gasification stove, the ashes after the burning can fall from the filter screen of its bottom, then fall on conveying assembly to carry to the treatment chamber, when needs handle the ashes of treatment chamber, go on conveying the ashes through the flight, then the ashes then can follow the discharging pipe and fall out, can carry out centralized processing to it, avoids it to fly away polluted environment in the air, more does benefit to the environmental protection.

2. This biomass gasification stove, axis of rotation drive flight rotate the material loading in the time, can drive first slide through the cam and slide, make it drive first baffle and second baffle and remove, and can make the second baffle can produce vibrations through the third spring to beat the ashes, make it conveniently fall, the clearance of being convenient for discharge.

3. This biomass gasification stove, axis of rotation drive flight rotate the material loading in the time, still can drive the second slide through the cam and slide, and promote fixed block and push pedal and remove to promote the ashes, avoid its production to pile up unable falling down, thereby make the flight conveniently discharge it.

The part which is not involved in the device is the same as the prior art or can be realized by the prior art, the invention can carry out centralized treatment on the furnace ash, avoids the blockage caused by excessive accumulation, thereby influencing the combustion speed, simultaneously prevents the furnace ash from floating in the air to pollute the environment, and is more beneficial to environmental protection.

Drawings

FIG. 1 is a schematic three-dimensional structure of a biomass gasification furnace according to the present invention;

FIG. 2 is a schematic partial sectional view of a biomass gasification furnace according to the present invention;

FIG. 3 is a schematic view of a partial structure of a biomass gasification furnace according to the present invention;

FIG. 4 is a schematic structural diagram of a frame plate and a scraper of a biomass gasification furnace according to the present invention;

FIG. 5 is an enlarged schematic view of a portion A of FIG. 3 of a biomass gasification furnace according to the present invention;

FIG. 6 is an enlarged schematic view of a portion B of FIG. 3 of a biomass gasification furnace according to the present invention;

fig. 7 is an enlarged schematic structural view of a portion C in fig. 3 of a biomass gasification furnace according to the present invention.

In the figure: 1. a combustion chamber; 101. a rotating door; 2. a delivery chamber; 201. a drive shaft; 202. a conveyor belt; 203. a driven shaft; 204. a brush; 205. a support block; 3. a pipeline; 301. a support bar; 302. an air inlet pipe; 4. a treatment chamber; 401. a cavity; 402. a conical block; 403. a first slide plate; 404. a second slide plate; 405. a first spring; 406. a connecting pipe; 407. a push rod; 408. a first swash block; 5. a cylinder; 501. a rotating shaft; 502. a spiral sheet; 503. a discharge pipe; 504. a cam; 6. a chute; 601. a piston; 602. a second spring; 603. a connecting rod; 604. a first baffle plate; 605. a second baffle; 606. a third spring; 7. a first recess; 701. a second swash block; 702. a top rod; 703. a second recess; 704. rotating the rod; 705. a long groove; 706. fixing a column; 707. a fixed block; 708. pushing the plate; 8. a frame plate; 801. a support plate; 802. a scraper; 803. a spring plate; 9. a fixing plate; 901. a helical feed tube; 902. a funnel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-2, a biomass gasification furnace comprises a combustion chamber 1 and a conveying chamber 2, wherein the combustion chamber 1 is connected with the conveying chamber 2 through a pipeline 3, and a filter screen for furnace ash to fall is arranged at the communication part of the combustion chamber 1 and the pipeline 3; a conveying assembly and a processing cavity 4 are arranged in the conveying chamber 2, furnace ash falls into the conveying chamber 2 and is conveyed into the processing cavity 4 through the conveying assembly, a cylinder 5 is arranged in the processing cavity 4, a rotating shaft 501 is rotatably connected in the cylinder 5, a spiral sheet 502 is arranged on the outer wall of the rotating shaft 501, and a discharge pipe 503 communicated with the outer wall of the cylinder 5 is arranged on the outer wall of the cylinder 5; the inner wall of the treatment chamber 4 is slidably connected with a first baffle 604 and a push plate 708 for pushing the ashes.

When the device is used, materials are injected into the combustion chamber 1 for combustion, a flame path is arranged on the outer wall of the bottom of the combustion chamber 1, flame can be sprayed out, the burnt furnace dust can fall down from a filter screen at the bottom of the burnt furnace dust and then fall on the conveying assembly to be conveyed into the treatment cavity 4, when the furnace dust in the treatment cavity 4 needs to be treated, the rotating shaft 501 is driven to rotate through the driving part, the driving part is a motor, then the rotating shaft 501 can drive the spiral sheet 502 to rotate, so that the furnace dust is conveyed up, then the furnace dust can fall out from the discharge pipe 503, and the furnace dust can be pushed through the first baffle 604 and the push plate 708 on the inner wall of the treatment cavity 4, so that the furnace dust can fall down better and is placed at the bottom of the cylinder 5, so that the furnace dust is conveyed out conveniently, the furnace dust can be treated in a centralized manner, the furnace dust is prevented from floating in the air to pollute the environment, and the environment is more beneficial to environmental protection.

Example 2:

referring to fig. 2, 3 and 5, the biomass gasification furnace comprises a combustion chamber 1 and a conveying chamber 2, wherein the combustion chamber 1 is connected with the conveying chamber 2 through a pipeline 3, and a filter screen for furnace ash to fall is arranged at the position where the combustion chamber 1 is communicated with the pipeline 3; a conveying assembly and a processing cavity 4 are arranged in the conveying chamber 2, furnace ash falls into the conveying chamber 2 and is conveyed into the processing cavity 4 through the conveying assembly, a cylinder 5 is arranged in the processing cavity 4, a rotating shaft 501 is rotatably connected in the cylinder 5, a spiral sheet 502 is arranged on the outer wall of the rotating shaft 501, and a discharge pipe 503 communicated with the outer wall of the cylinder 5 is arranged on the outer wall of the cylinder 5; the inner wall of the treatment chamber 4 is slidably connected with a first baffle 604 and a push plate 708 for pushing the ashes.

When the device is used, materials are injected into the combustion chamber 1 for combustion, a flame path is arranged on the outer wall of the bottom of the combustion chamber 1, flame can be sprayed out, the burnt furnace dust can fall down from a filter screen at the bottom of the burnt furnace dust and then fall on the conveying assembly to be conveyed into the treatment cavity 4, when the furnace dust in the treatment cavity 4 needs to be treated, the rotating shaft 501 is driven to rotate through the driving part, the driving part is a motor, then the rotating shaft 501 can drive the spiral piece 502 to rotate, so that the furnace dust is conveyed up, then the furnace dust can fall out of the discharge pipe 503, and the furnace dust can be pushed through the first baffle 604 and the push plate 708 on the inner wall of the treatment cavity 4, so that the furnace dust can fall better and is placed at the bottom of the cylinder 5, and is convenient to convey the furnace dust out.

Be equipped with tapered block 402 in the treatment cavity 4, still be equipped with cavity 401 in the transport chamber 2, the one end that cavity 401 was placed in to axis of rotation 501 is equipped with cam 504, there are first slide 403 and second slide 404 in the cavity 401 respectively sliding connection, first slide 403 and second slide 404 all offset with cam 504, be equipped with liquid between the inner wall of first slide 403 and cavity 401, and all be equipped with first spring 405 between the both sides inner wall of first slide 403 and second slide 404 and cavity 401, can make first slide 403 and second slide 404 offset the compressed back with cam 504, can automatic re-setting, convenient used repeatedly.

Be equipped with spout 6 on the transport chamber 2, spout 6 is linked together through connecting pipe 406 and cavity 401's left side, sliding connection has piston 601 in spout 6, is equipped with second spring 602 between the inner wall of piston 601 and spout 6, can make piston 601 automatic re-setting, convenient used repeatedly, and first baffle 604 passes through connecting rod 603 and links to each other with piston 601.

The end of the first stop 604 remote from the link 603 is connected to a second stop 605 by a third spring 606.

In the invention, the rotating shaft 501 drives the spiral piece 502 to rotate and feed materials, and simultaneously drives the cam 504 to rotate, so that the cam 504 pushes the two first sliding plates 403 and the second sliding plates 404 against each other to slide, when the first slide plate 403 slides, it will push the water flow on the left side of the first slide plate 403 into the slide groove 6 through the connection pipe 406, wherein the water flow can be replaced by gas, and can be realized, after the water flow is extruded into the chute 6, the piston 601 is pushed to move, so that the piston 601 drives the connecting rod 603 to move, then the first baffle 604 and the second baffle 605 are driven to move, and the first baffle 604 and the second baffle 605 are connected by a third spring 606, so that the second baffle 605 can generate vibration to beat the furnace ash, so that the furnace ash can fall down conveniently, secondly, certain buffering can be carried out to avoid damage, so that the furnace dust is conveniently discharged through the spiral piece 502.

Example 3:

referring to fig. 2, 3, 6 and 7, a biomass gasification furnace comprises a combustion chamber 1 and a conveying chamber 2, wherein the combustion chamber 1 is connected with the conveying chamber 2 through a pipeline 3, and a filter screen for furnace ash to fall is arranged at the position where the combustion chamber 1 is communicated with the pipeline 3; a conveying assembly and a processing cavity 4 are arranged in the conveying chamber 2, furnace ash falls into the conveying chamber 2 and is conveyed into the processing cavity 4 through the conveying assembly, a cylinder 5 is arranged in the processing cavity 4, a rotating shaft 501 is rotatably connected in the cylinder 5, a spiral sheet 502 is arranged on the outer wall of the rotating shaft 501, and a discharge pipe 503 communicated with the outer wall of the cylinder 5 is arranged on the outer wall of the cylinder 5; the inner wall of the treatment chamber 4 is slidably connected with a first baffle 604 and a push plate 708 for pushing the ashes.

The second slide 404 is connected with a push rod 407, a first concave hole 7 and a second concave hole 703 are arranged in the conveying chamber 2, one end of the push rod 407, which is arranged in the first concave hole 7, is provided with a first inclined block 408, a second inclined block 701 is slidably connected in the first concave hole 7, the first inclined block 408 and the second inclined block 701 are respectively provided with a matched inclined surface, a fourth spring is arranged between the second inclined block 701 and the inner wall of the top of the first concave hole 7, the top of the second inclined block 701 is provided with an ejector rod 702, the fourth spring can enable the second inclined block 701 to automatically reset, the device can also be realized when the fourth spring is not adopted, namely, the device can be driven to move downwards through the gravity of the second inclined block 701 and the ejector rod 702, and reset is completed.

A rotating rod 704 is rotatably connected to the top rod 702, a fixing block 707 is rotatably connected to one end, away from the top rod 702, of the rotating rod 704, the fixing block 707 is fixedly connected to the push plate 708, the rotating rod 704 is disposed in the second concave hole 703, a fixing column 706 is further disposed in the second concave hole 703, an elongated slot 705 is disposed on the rotating rod 704, and the fixing column 706 is disposed in the elongated slot 705.

In the invention, the rotating shaft 501 drives the spiral piece 502 to rotate and feed, and simultaneously drives the cam 504 to rotate, so that the cam 504 pushes the two first sliding plates 403 and the second sliding plates 404 which are abutted against each other to slide, when the second sliding plate 404 slides, the first inclined block 408 in the first concave hole 7 is driven to move through the push rod 407, the first spring 405 is sleeved on the push rod 407, the normal use of the push rod 407 cannot be influenced, because the first inclined block 408 and the second inclined block 701 are respectively provided with an inclined surface which is matched with each other, when the first inclined block 408 abuts against the second inclined block 701, the inclined surfaces of the first inclined block 408 and the second inclined block are abutted against each other, so that the second sliding block 701 can push to drive the ejector rod 702 to move upwards, then the ejector rod 702 can push the rotating rod 704 which is rotatably connected to the outer wall of the ejector rod 702, because the long groove 705 and the fixed column 706 are arranged, the rotating rod 704 can be limited when rotating, so that the rotating rod 704 can rotate around the fixed column 706, thereby pushing the fixing block 707 and the push plate 708 to move, thereby pushing the ashes to prevent them from being accumulated and falling down, so that the spiral piece 502 can discharge them conveniently.

Example 4:

referring to fig. 1-4, a biomass gasification furnace comprises a combustion chamber 1 and a conveying chamber 2, wherein the combustion chamber 1 is connected with the conveying chamber 2 through a pipeline 3, and a filter screen for furnace ash to fall is arranged at the communication part of the combustion chamber 1 and the pipeline 3; a conveying assembly and a processing cavity 4 are arranged in the conveying chamber 2, furnace ash falls into the conveying chamber 2 and is conveyed into the processing cavity 4 through the conveying assembly, a cylinder 5 is arranged in the processing cavity 4, a rotating shaft 501 is rotatably connected in the cylinder 5, a spiral sheet 502 is arranged on the outer wall of the rotating shaft 501, and a discharge pipe 503 communicated with the outer wall of the cylinder 5 is arranged on the outer wall of the cylinder 5; the inner wall of the treatment chamber 4 is slidably connected with a first baffle 604 and a push plate 708 for pushing the ashes.

The conveying assembly comprises two driving shafts 201 arranged on the conveying chamber 2, the two driving shafts 201 are connected with a conveying belt 202 through rollers, a driven shaft 203 is arranged in the conveying chamber 2, a brush 204 matched with the conveying belt 202 is arranged on the driven shaft 203, and the driving shafts 201 and the driven shaft 203 are connected through belts; when the furnace ash cleaning device is used, the driving shaft 201 is driven to rotate by the driving source, the driving source can be a motor and the like and can drive the driving shaft 201 to rotate, when the driving shaft 201 rotates, the driven shaft 203 can be driven to rotate by a belt wheel, a belt and the like, meanwhile, the conveying belt 202 and the hairbrush 204 can rotate, the hairbrush 204 brushes the conveying belt 202, and therefore furnace ash remained on the outer wall of the furnace ash cleaning device is brushed off and is convenient to drop.

The bottom of the conveying chamber 2 is obliquely arranged, so that the furnace ash can conveniently fall into the processing cavity 4, a frame plate 8 is arranged in the conveying chamber 2, a supporting plate 801 is slidably connected in the frame plate 8, a scraper 802 matched with the conveyor belt 202 is arranged on the supporting plate 801, and an elastic sheet 803 is arranged between the supporting plate 801 and the inner wall of the frame plate 8; in the invention, the scraper 802 can scrape off the residual furnace dust on the outer wall of the conveyor belt 202 to avoid blockage caused by more accumulated furnace dust, and the elastic sheet 803 can buffer the scraper 802, so that the gap between the scraper 802 and the conveyor belt 202 can have a room for adjustment, and the device has higher practicability.

Example 5:

referring to fig. 1, a biomass gasification furnace, substantially the same as in example 1, further,

a support rod 301 is further arranged between the combustion chamber 1 and the conveying chamber 2, an air inlet pipe 302 is arranged on the outer wall of the pipeline 3, and a support block 205 is arranged at the bottom of the conveying chamber 2.

Gasifying agent can be conveniently poured in through the air inlet pipe 302 to carry out oxidation reaction, the main reaction of the biomass in the oxidation layer is oxidation reaction, the gasifying agent absorbs heat through the pipeline 3 from which furnace dust falls after being introduced, then enters the oxidation layer, combustion reaction is carried out through high-temperature carbon at the oxidation layer to generate a large amount of carbon dioxide and release heat at the same time, the temperature can reach 1000-, the biomass raw material is heated to evaporate the water in the raw material, absorb heat and reduce the generation temperature, and the outlet temperature of the biomass gasification furnace is generally 100-300 ℃.

The outer wall of combustion chamber 1 is equipped with rotating door 101, and the outer wall of combustion chamber 1 still is equipped with fixed plate 9, is equipped with the spiral conveying pipe 901 that the slope set up on fixed plate 9, is equipped with the funnel 902 that is connected with spiral conveying pipe 901 on fixed plate 9.

In the invention, the rotary door 101 is opened, feeding can be carried out through the rotary door 101, when the material to be conveyed is small, the material can be put into the hopper 902, and then the material enters the combustion chamber 1 through the inclined spiral feeding pipe 901, so that the feeding is convenient.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A biomass gasification furnace comprises a combustion chamber (1) and a conveying chamber (2), and is characterized in that the combustion chamber (1) is connected with the conveying chamber (2) through a pipeline (3), and a filter screen for furnace ash to fall is arranged at the position where the combustion chamber (1) is communicated with the pipeline (3);

a conveying assembly and a processing cavity (4) are arranged in the conveying chamber (2), furnace ash falls into the conveying chamber (2) and is conveyed into the processing cavity (4) through the conveying assembly, a cylinder (5) is arranged in the processing cavity (4), a rotating shaft (501) is rotatably connected in the cylinder (5), a spiral sheet (502) is arranged on the outer wall of the rotating shaft (501), and a discharge pipe (503) communicated with the cylinder (5) is arranged on the outer wall of the cylinder (5);

the inner wall of the treatment cavity (4) is connected with a first baffle plate (604) and a push plate (708) which are used for pushing the furnace ash in a sliding way.

2. The biomass gasification furnace according to claim 1, wherein a conical block (402) is arranged in the treatment cavity (4), a cavity (401) is further arranged in the conveying chamber (2), a cam (504) is arranged at one end of the rotating shaft (501) arranged in the cavity (401), a first sliding plate (403) and a second sliding plate (404) are respectively connected in the cavity (401) in a sliding manner, the first sliding plate (403) and the second sliding plate (404) are respectively abutted against the cam (504), liquid is arranged between the first sliding plate (403) and the inner wall of the cavity (401), and first springs (405) are respectively arranged between the first sliding plate (403) and the inner wall of the cavity (401) and between the second sliding plate (404) and the inner wall of the cavity (401).

3. The biomass gasification furnace according to claim 2, wherein a chute (6) is arranged on the conveying chamber (2), the chute (6) is communicated with the left side of the cavity (401) through a connecting pipe (406), a piston (601) is connected in the chute (6) in a sliding manner, a second spring (602) is arranged between the piston (601) and the inner wall of the chute (6), and the first baffle (604) is connected with the piston (601) through a connecting rod (603).

4. The biomass gasification furnace according to claim 3, wherein one end of the first baffle plate (604) far away from the connecting rod (603) is connected with a second baffle plate (605) through a third spring (606).

5. The biomass gasification furnace according to claim 2, wherein a push rod (407) is connected to the second sliding plate (404), a first concave hole (7) and a second concave hole (703) are formed in the conveying chamber (2), a first inclined block (408) is arranged at one end, placed in the first concave hole (7), of the push rod (407), a second inclined block (701) is connected in the first concave hole (7) in a sliding mode, the first inclined block (408) and the second inclined block (701) are respectively provided with a matched inclined surface, a fourth spring is arranged between the second inclined block (701) and the inner wall of the top of the first concave hole (7), and a push rod (702) is arranged at the top of the second inclined block (701).

6. The biomass gasification furnace according to claim 5, wherein a rotating rod (704) is rotatably connected to the top rod (702), a fixed block (707) is rotatably connected to one end of the rotating rod (704) far away from the top rod (702), the fixed block (707) is fixedly connected with the push plate (708), the rotating rod (704) is placed in the second concave hole (703), a fixed column (706) is further arranged in the second concave hole (703), a long groove (705) is formed in the rotating rod (704), and the fixed column (706) is placed in the long groove (705).

7. The biomass gasification furnace according to claim 1, 4 or 6, characterized in that the conveying assembly comprises two driving shafts (201) arranged on the conveying chamber (2), the two driving shafts (201) are connected with a conveying belt (202) through rollers, a driven shaft (203) is arranged in the conveying chamber (2), a brush (204) matched with the conveying belt (202) is arranged on the driven shaft (203), and the driving shafts (201) are connected with the driven shaft (203) through belts.

8. The biomass gasification furnace according to claim 7, wherein the bottom of the conveying chamber (2) is arranged obliquely, a frame plate (8) is arranged in the conveying chamber (2), a support plate (801) is connected in the frame plate (8) in a sliding manner, a scraper (802) matched with the conveyor belt (202) is arranged on the support plate (801), and an elastic sheet (803) is arranged between the support plate (801) and the inner wall of the frame plate (8).

9. The biomass gasification furnace according to claim 1, wherein a support rod (301) is further arranged between the combustion chamber (1) and the conveying chamber (2), an air inlet pipe (302) is arranged on the outer wall of the pipeline (3), and a support block (205) is arranged at the bottom of the conveying chamber (2).

10. The biomass gasification furnace according to claim 1, wherein a rotary door (101) is arranged on the outer wall of the combustion chamber (1), a fixing plate (9) is further arranged on the outer wall of the combustion chamber (1), a spiral feeding pipe (901) is obliquely arranged on the fixing plate (9), and a funnel (902) connected with the spiral feeding pipe (901) is arranged on the fixing plate (9).