CN115418249A

CN115418249A - Push plate feeding device of biomass gasification furnace

Info

Publication number: CN115418249A
Application number: CN202211196710.7A
Authority: CN
Inventors: 刘同保; 杨志伟; 李奕福; 王治纲; 刘竹晴
Original assignee: Ganzhou Yichen Hongyan Energy Technology Co ltd
Current assignee: Ganzhou Yichen Hongyan Energy Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-02
Anticipated expiration: 2042-09-29
Also published as: CN115418249B

Abstract

The invention relates to the technical field of gasification furnace feeding, and discloses a push plate feeding device of a biomass gasification furnace, which comprises a gasification furnace body, wherein a feeding body is fixedly connected to one side of the gasification furnace body, a hydraulic cylinder is connected to one side of the feeding body, which is far away from the gasification furnace body, a push rod is connected in a sliding manner in the direction of the hydraulic cylinder, which is close to the feeding body, a feeding plate is vertically connected in a sliding manner in the direction of the push rod, which is close to the feeding body, which penetrates through the side of the feeding body, a partition plate is fixedly connected to the middle part of the top end of the feeding plate, and a combustion material positioned right below the feeding hole of the feeding body is contained in the top end of the feeding plate. The material throwing sliding chute is arranged close to the parabolic shape of the gasification furnace body part, so that the sliding rod drives the feeding plate to wholly do parabolic motion at the inner side of the gasification furnace body, the feeding plate throws the combustion materials at the top end at the inner side of the gasification furnace body, the combustion materials are shaken uniformly at the top end of the feeding plate, then the material throwing is carried out, and the combustion materials are uniformly distributed after entering the gasification furnace body.

Description

Push plate feeding device of biomass gasification furnace

Technical Field

The invention relates to the technical field of gasification furnace feeding, in particular to a push plate feeding device of a biomass gasification furnace.

Background

The biomass gasification furnace is a container which takes crop straws, forest waste, edible fungus residues, cattle, sheep and livestock manure and all combustible substances as raw materials and burns in the furnace, the generated combustible gas is biomass fuel gas which is a renewable resource, the gasification process in the gasification furnace is divided into four processes from bottom to top, such as oxidation reaction, reduction reaction, pyrolysis, drying and the like, the raw materials with large particle size are pushed into a drying layer in the combustion process, and then the raw materials drop to the lower layer through the reduction of the reaction diameters of the raw materials at different layers, so that the continuous combustion process is carried out.

When raw materials enter a gasification furnace, the raw materials are fed from the top of the gasification furnace usually in an auger feeding mode, and after the auger is fed to a top feeding hole, fuel falls into the gasification furnace for distribution through free falling, so that the gasification furnace is required to be manufactured to be thin and high so as to achieve relatively uniform distribution, but the feeding mode has the defects that the gasification area of the gasification furnace is small and the waste in the height direction is large; in the process of burning the raw materials in the furnace, the raw materials after the reaction of the corresponding layer have the effect of force to cause the raw material particles of the layer to be attached to each other, so that the raw materials on the upper layer are required to be pushed to be discharged under the action of gravity, the discharging process of the lower layer is delayed, the discharging speed is caused, and the combustion reaction on the inner side of the gasification furnace is influenced.

Disclosure of Invention

Aiming at the defects of the prior push plate feeding device of the biomass gasification furnace in the background technology in the using process, the invention provides the push plate feeding device of the biomass gasification furnace, which has the advantages of more uniform feeding and more uniform furnace ash blanking in the gasification furnace, and solves the technical problems of feeding stacking and slow falling of each layer in the furnace after combustion in the background technology.

The invention provides the following technical scheme: the push plate feeding device of the biomass gasification furnace comprises a gasification furnace body, wherein a feeding body is fixedly connected to one side of the gasification furnace body, one side, away from the gasification furnace body, of the feeding body is connected with a hydraulic cylinder, a push rod is slidably connected to the direction, close to the feeding body, of the hydraulic cylinder, a feeding plate is slidably connected to the side, close to the feeding body, of the push rod, the side, vertical to the side, of the feeding body is connected with a sliding rod in a penetrating mode, a partition plate is fixedly connected to the middle of the top end of the feeding plate, burning materials located right below a feeding hole of the feeding body are contained in the top end of the feeding plate, a fixing spring is fixedly connected to the direction, close to the push rod, of the bottom end of the feeding plate, a sliding rod is fixedly connected to the bottom end of the fixing spring, material throwing sliding grooves located on two sides of the feeding plate are formed in the inner side of the feeding body, and the upper portion, close to the gasification furnace body, of the throwing sliding grooves is in an inverted parabolic shape.

Preferably, the fixed spout that is located throwing material spout below is seted up to the inboard of the feed body, and throws the both ends of material spout and fixed spout and communicate respectively, it is vertical to throw the connection shape that material spout and fixed spout are close to the gasifier body, and throws the material spout and be the slant with fixed spout is close to the connection shape of push rod, the inboard top fixedly connected with convex block group that is close to the push rod of throwing the material spout, the inboard vertical equidistance of gasifier body distributes and has the sieve, one side fixedly connected with connecting plate of sieve, the bottom fixedly connected with of delivery sheet is located the inboard striking plate of gasifier body, the top portion of connecting plate is located between the inner wall of striking plate and gasifier body, the inboard top of fixed spout articulates has the baffle that is located throwing material spout and fixed spout slant junction, the side fixedly connected with reset spring that the baffle is close to the gasifier body, reset spring keeps away from the one end of baffle and the inboard top fixed connection of fixed spout.

Preferably, the top of delivery sheet holds burning material and the fixed spring is the maximum compression volume when the slide bar is located the position that is close to the push rod in throwing the material spout, the top of delivery sheet does not have burning material and the fixed spring is the minimum compression volume when the slide bar is located the position that is close to the gasifier body in fixed spout.

Preferably, the fixed sliding chute is in a horizontal strip shape, the inner side friction coefficient of the fixed sliding chute is smaller than that of the material throwing sliding chute, and the inner side friction coefficient of the material throwing sliding chute is smaller than that of the surface of the convex block group.

Preferably, the sliding rod is cylindrical, and the convex block group is wavy at the top end.

Preferably, the guide plate is in a shape that the top end and the bottom end are respectively inclined towards the gasification furnace body and the push rod, the inclination of the inclined direction of the guide plate is the same as the inclination of the inclined connection part of the throwing chute and the fixed chute, and the vertex of the guide plate, which is far away from the return spring, is a round angle.

The invention has the following beneficial effects:

1. according to the invention, the parabolic shape of the part, close to the gasification furnace body, of the material throwing chute is arranged, when the hydraulic cylinder drives the push rod to push the feeding plate to move, the sliding rod at the bottom end of the feeding plate firstly moves through the convex block group, so that the bottom end of the sliding rod passes through the wave shape of the top end of the convex block group and generates vibration, the feeding plate is driven to vibrate burning materials at the top end, the burning materials are uniformly distributed at the top end of the feeding plate, the sliding rod subsequently and rapidly slides in the parabolic part of the material throwing chute, the sliding rod drives the feeding plate to integrally do parabolic motion in the inner side of the gasification furnace body, the feeding plate throws the burning materials at the top end in the inner side of the gasification furnace body, the burning materials are uniformly shaken at the top end of the feeding plate firstly and then thrown, the burning materials are uniformly distributed after entering the gasification furnace body, and the gas production rate in the inner side of the gasification furnace body is ensured.

2. According to the invention, through the arrangement of the fixed sliding chute, after the feeding plate throws the burning materials at the inner side of the gasification furnace body, the hydraulic cylinder drives the push rod and the feeding plate to synchronously move towards the direction of the push rod, the force of the hydraulic cylinder enables the feeding plate to integrally and instantly move towards the direction of the push rod, so that the side surface of the impact plate and the side surface of the connecting plate are impacted, the connecting plate transmits the vibration generated by the impact to the sieve plate, the burning materials at the top end of the sieve plate can shake and fall, further, the reaction of each layer at the inner side of the gasification furnace body is ensured, and meanwhile, the vibration of the sieve plate enables the newly entering materials at the top end to further tend to be horizontal, so that the entering burning materials are more uniform.

3. According to the invention, through the elastic arrangement of the fixed spring, when no combustion material exists at the top end of the feeding plate, the top end of the feeding plate and the partition plate are positioned under the feeding port of the feeding body, the top end surface of the feeding plate abuts against and seals the bottom end of the feeding port of the feeding body, the top end of the feeding body is closed at the moment when the combustion material completely enters the feeding body, the combustion material falls to the top end of the feeding plate freely and is compressed by the fixed spring under the action of gravity, the top end surface of the feeding plate is separated from the bottom end of the feeding port of the feeding body, the top end of the combustion material is far away from the bottom end of the feeding port of the feeding body, the bottom end of the feeding port of the feeding body is closed at the moment, and the hydraulic cylinder pushes the push rod to push the feeding plate to carry out the subsequent feeding process, so that the tightness of the feeding process is ensured.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a schematic view of the material throwing state of the feeding plate structure according to the present invention;

FIG. 3 is a schematic view of the shapes of the throwing chute structure and the fixed chute structure of the present invention;

FIG. 4 is an enlarged view of the structure A in FIG. 3 according to the present invention.

In the figure: 1. a gasification furnace body; 2. a material feeding body; 3. a hydraulic cylinder; 4. a push rod; 5. a feeding plate; 6. a partition plate; 7. burning the material; 8. fixing the spring; 9. a slide bar; 10. a material throwing chute; 11. fixing the chute; 12. a convex block group; 13. a sieve plate; 14. a connecting plate; 15. an impact plate; 16. a guide plate; 17. a return spring.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a push plate feeding device of a biomass gasification furnace comprises a gasification furnace body 1, a feeding body 2 is fixedly connected to one side of the gasification furnace body 1, the feeding body 2 is in an inverted T shape, the vertical part of the feeding body 2 is a feeding channel, the top end and the bottom end of the feeding body 2 are controlled to be opened and closed by a gate valve, one side of the feeding body 2 far away from the gasification furnace body 1 is connected with a hydraulic cylinder 3, a push rod 4 is slidably connected to the direction of the hydraulic cylinder 3 close to the feeding body 2, a feeding plate 5 is vertically slidably connected to the side of the push rod 4 close to the feeding body 2 through the feeding body 2, and the connecting surface between the push rod 4 and the feeding plate 5 is always in contact, the top middle part fixedly connected with baffle 6 of feed table 5, the top of feed table 5 contains the burning material 7 that is located under the feed inlet of feed body 2, the direction fixedly connected with fixed spring 8 that the bottom of feed table 5 is close to push rod 4, the bottom fixedly connected with slide bar 9 of fixed spring 8, the material spout 10 of throwing that is located feed table 5 both sides is seted up to the inboard of feed body 2, the top part shape that material spout 10 is close to gasification furnace body 1 is the parabola shape of invering, and the initiating terminal of the parabola portion of material spout 10 is close to protruding block group 12, and the oblique top of the tail end orientation gasification furnace body 1 of the parabola portion of material spout 10.

Referring to fig. 1 and 3, a fixed chute 11 located below a material throwing chute 10 is formed in the inner side of a material feeding body 2, two ends of the material throwing chute 10 and two ends of the fixed chute 11 are respectively communicated, the connection shape of the material throwing chute 10 and the fixed chute 11 close to a gasification furnace body 1 is vertical, the connection shape of the material throwing chute 10 and the fixed chute 11 close to a push rod 4 is oblique, corners of the whole fixed chute 11 are rounded corners, a top end of the inner side of the material throwing chute 10 close to the push rod 4 is fixedly connected with a convex block group 12, sieve plates 13 are vertically and equidistantly distributed on the inner side of the gasification furnace body 1, one side of each sieve plate 13 is fixedly connected with a connecting plate 14, a bottom end of each feeding plate 5 is fixedly connected with an impact plate 15 located on the inner side of the gasification furnace body 1, a top end of each connecting plate 14 is located between the impact plate 15 and the inner wall of the gasification furnace body 1, guide plates 16 located at oblique connection positions of the material throwing chute 10 and the fixed chute 11 are hinged to the top ends of the inner sides of the fixed chute 11, a side guide plate 16 close to the gasification furnace body is fixedly connected with a return spring 17, and the return chute 11 elastically keep the bottom end of the slide plate 16 in a state.

Referring to fig. 1-2, when the top end of the feeding plate 5 holds the combustion materials 7 and the sliding rod 9 is located in the throwing chute 10 near the push rod 4, the spring 8 is fixed to be the maximum compression amount, the top end of the feeding plate 5 has no burning material 7, and the fixed spring 8 is the minimum compression amount when the sliding rod 9 is positioned in the fixed chute 11 and close to the gasification furnace body 1, namely, the elasticity of the fixed spring 8 keeps the burning materials 7 at the top end of the feeding plate 5 and the sliding rod 9 is positioned in the throwing chute 10, and when the top end of the feeding plate 5 is not provided with the burning materials 7 and the sliding rod 9 is positioned in the fixed chute 11, the feeding plate 5 is positioned at the horizontal position shown in figure 1, when no combustion material 7 is arranged at the top end of the feeding plate 5, the feeding plate 5 is elastically pushed by the fixed spring 8, so that the top end of the feeding plate 5 and the partition plate 6 are positioned below the vertical feeding hole of the feeding body 2, and due to the elastic pushing of the fixed spring 8, the top end surface of the feeding plate 5 is propped against the bottom end of the feeding hole of the feeding body 2, so that the bottom end of the feeding hole of the feeding body 2 is blocked, at the moment that the once-entering combustion materials 7 completely enter the feeding body 2, the gate valve at the top end of the feeding body 2 is instantly closed, the combustion materials 7 fall to the top end of the feeding plate 5 through free falling bodies under the action of gravity, the fixed spring 8 is compressed under the action of the gravity of the combustion materials 7, the top end surface of the feeding plate 5 is separated from the bottom end of the feeding hole of the feeding body 2, and meanwhile, the top end of the combustion materials 7 is also separated from the bottom end of the feeding hole of the feeding body 2, namely, the gate valve at the bottom end of the feed inlet of the feed body 2 is closed, and then the push rod 4 is pushed by the control of the hydraulic cylinder 3 to drive the feeding plate 5, so that the feeding plate 5 moves towards the inner side of the gasification furnace body 1, and then the subsequent feeding process is carried out, and the sealing performance of the inner side of the gasification furnace body 1 in the feeding process is ensured.

Referring to fig. 3, the fixed chute 11 is in a horizontal strip shape, the inner side friction coefficient of the fixed chute 11 is smaller than the inner side friction coefficient of the material throwing chute 10, and the inner side friction coefficient of the material throwing chute 10 is smaller than the friction coefficient of the surface of the convex block group 12, because the force of pushing the push rod 4 by the hydraulic cylinder 3 is the same, and the friction coefficient of the fixed chute 11 is the smallest, the sliding speed of the sliding rod 9 inside the fixed chute 11 is the fastest, after the feeding plate 5 throws the burning materials 7 on the inner side of the gasification furnace body 1, the hydraulic cylinder 3 drives the push rod 4 to push the feeding plate 5 to move in the reverse direction of the feeding material, so that the side surface of the striking plate 15 impacts with the side surface of the connecting plate 14 at a certain speed, the vibration generated after the connecting plate 14 is transmitted to the sieve plate 13, the sieve plate 13 vibrates the raw materials on the upper and lower layers, the raw materials burned to reduce the vibration to a certain degree, the reaction of each layer on the gasification furnace body 1 can be carried out at a normal speed, and the vibration of the sieve plate 13 after the feeding can be acted on the top end of the sieve plate 13, the new entering the top end of the vibration, so that the burning materials enter the sieve plate 7, the furnace body 1, the top end of the furnace body 7, the vibration is more uniformly, the friction coefficient of the sliding rod 7 is more uniformly, the friction coefficient of the sliding rod 12 is distributed at the highest speed, and the friction coefficient of the sliding rod 12 is more stably, and the protrusions 12, and the protrusions of the protrusions 12, thereby ensuring the maximum of the sliding rod in the gasification furnace body 7, and the process of the furnace body 7, and the sliding rod is more stable, and the maximum, and the friction coefficient of the sliding rod 7 is more stable process of the sliding rod is more stable.

Referring to fig. 1 and 4, the sliding rod 9 is cylindrical, the bump group 12 is wavy at the top end, the sliding rod 9 is arranged in the cylindrical shape of the sliding rod 9, the sliding contact surface of the sliding rod 9 on the inner sides of the material throwing chute 10 and the fixed chute 11 is minimized, that is, the resistance between the sliding rod 9 and the material throwing chute 10 and the fixed chute 11 is small, and the sliding rod 9 is continuously shaken in the process of moving the top end of the bump group 12 through the interaction between the cylindrical shape of the sliding rod 9 and the wavy shape of the bump group 12, so that the vibration is transmitted to the top end of the material feeding plate 5 through the fixed spring 8, the burning material 7 on the vibrating top end of the material feeding plate 5 is more uniformly distributed while being scattered after being vibrated by the material feeding plate 5, and the burning material 7 on the top end of the material feeding plate 5 is thrown before the burning material 7 on the inner side of the gasification furnace body 1, and the burning material 7 is firstly shaken uniformly distributed on the top end of the material feeding plate 5, so that the burning material 7 enters the gasification furnace body 1 and is more uniformly distributed.

Referring to fig. 4, the guide plate 16 is inclined toward the gasification furnace 1 and the push rod 4 from the top and the bottom, respectively, and the inclination of the guide plate 16 is the same as the inclination of the inclined connection between the material throwing chute 10 and the fixed chute 11, the vertex of the guide plate 16 away from the return spring 17 is a rounded corner, and the inclination of the guide plate 16 and the rounded corner of the vertex of the guide plate 16 are arranged, so that the guide plate 16 can only rotate toward the inclined connection between the material throwing chute 10 and the fixed chute 11, thereby ensuring the single rotation effect of the guide plate 16, when the slide rod 9 acts forcefully on the side of the guide plate 16 close to the push rod 4, the guide plate 16 acts reversely on the slide rod 9, so that the slide rod 9 moves obliquely upward to the inner side of the material throwing chute 10, and the next feeding process is performed.

The use method (working principle) of the invention is as follows:

when feeding combustion materials 7, the gate valve at the top end of the feeding body 2 is opened, the combustion materials 7 enter the inner side of the feeding body 2 through the top end of the feeding body 2, after a certain amount of combustion materials 7 are released instantly, the gate valve is closed, the combustion materials 7 fall into the top end of the feeding plate 5 at the inner side of the feeding body 2, the gravity of the combustion materials 7 acts on the top end of the feeding plate 5, so that the feeding plate 5 compresses the fixed spring 8 at the bottom end, at the moment, the hydraulic cylinder 3 pushes the push rod 4 to move towards the gasification furnace body 1, the push rod 4 pushes the feeding plate 5 to move synchronously, the fixed spring 8 at the bottom end of the feeding plate 5 drives the sliding rod 9 to slide at the inner side of the throwing chute 10, the outer side of the bottom end of the sliding rod 9 passes through the top end of the convex block group 12, so that the sliding rod 9 is shaken by the convex block group 12, the feeding plate 5 is synchronously shaken, so that the combustion materials 7 at the top end of the feeding plate 5 are shaken and evenly distributed, the bottom end of the sliding rod 9 is moved towards the inner side of the sliding chute 10, the sliding chute 11, the sliding rod 9 is moved towards the inner side of the sliding chute 11, the sliding chute 5, the sliding chute is moved towards the inner side of the sliding chute 11, the sliding chute 11, the sliding rod is fixed chute 11, the outer side of the sliding rod 9 moves the side surface of the guide plate 16, the guide plate 16 instantly rotates to the oblique connection part of the material throwing chute 10 and the fixed chute 11, the sliding rod 9 moves to the direction that the guide plate 16 is close to the push rod 4, meanwhile, the feeding plate 5 moves to drive the impact plate 15 to move at the inner side of the gasification furnace body 1, the impact plate 15 instantly moves towards the position of the connecting plate 14, the impact plate 15 and the connecting plate 14 instantly impact and generate vibration, the sieve plates 13 connected with the connecting plate 14 are vibrated, raw materials above each sieve plate 13 are timely blanked, one-time feeding is finished, and in the process that the next hydraulic cylinder 3 pushes the push rod 4 to move and feed towards the gasification furnace body 1, the sliding rod 9 moves towards the direction of the guide plate 16 and is pushed back to the inner side of the material throwing chute 10 by the reaction of the guide plate 16, and the next feeding process is carried out.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a push pedal feed arrangement of biomass gasification stove, includes gasifier body (1), one side fixedly connected with feeding body (2) of gasifier body (1), its characterized in that: one side, far away from the gasification furnace body (1), of the feeding body (2) is connected with a hydraulic cylinder (3), a push rod (4) is connected to the direction, close to the feeding body (2), of the hydraulic cylinder (3), a feeding plate (5) is connected to the side, vertical to the side, of the feeding body (2) in the direction, close to the feeding body (2), of the push rod (4), a partition plate (6) is fixedly connected to the middle of the top end of the feeding plate (5), combustion materials (7) located right below a feeding hole of the feeding body (2) are contained in the top end of the feeding plate (5), a fixing spring (8) is fixedly connected to the direction, close to the push rod (4), of the bottom end of the fixing spring (8), a sliding rod (9) is fixedly connected to the bottom end of the feeding plate (2), material throwing sliding grooves (10) located on two sides of the feeding plate (5) are formed in the inner side of the feeding body (2), and the upper portion, close to the material throwing sliding grooves (10), close to the gasification furnace body (1), is in an inverted parabolic shape.

2. The push plate feeding device of the biomass gasification furnace according to claim 1, wherein: the inner side of the feeding body (2) is provided with a fixed chute (11) positioned below the throwing chute (10), and the two ends of the throwing chute (10) and the fixed chute (11) are respectively communicated, the connecting shape of the throwing chute (10) and the fixed chute (11) close to the gasification furnace body (1) is vertical, the connection shape of the throwing chute (10) and the fixed chute (11) close to the push rod (4) is oblique, the inner side of the throwing chute (10) close to the top end of the push rod (4) is fixedly connected with a convex block group (12), sieve plates (13) are vertically distributed on the inner side of the gasification furnace body (1) at equal intervals, one side of the sieve plate (13) is fixedly connected with a connecting plate (14), the bottom end of the feeding plate (5) is fixedly connected with an impact plate (15) positioned at the inner side of the gasification furnace body (1), the top end of the connecting plate (14) is located between the impact plate (15) and the inner wall of the furnace body (1), the top end of the inner side of the fixed chute (11) is hinged with a guide plate (16) which is positioned at the inclined connection part of the throwing chute (10) and the fixed chute (11), the side surface of the guide plate (16) close to the gasification furnace body (1) is fixedly connected with a return spring (17), one end of the return spring (17) far away from the guide plate (16) is fixedly connected with the top end of the inner side of the fixed chute (11).

3. The push plate feeding device of the biomass gasification furnace according to claim 2, wherein: the combustion material conveying device is characterized in that the top end of the feeding plate (5) is used for containing combustion materials (7), the fixed spring (8) is the maximum compression amount when the sliding rod (9) is located in the material throwing sliding groove (10) and close to the push rod (4), and the fixed spring (8) is the minimum compression amount when the top end of the feeding plate (5) is free of the combustion materials (7) and the sliding rod (9) is located in the fixed sliding groove (11) and close to the gasification furnace body (1).

4. The push plate feeding device of the biomass gasification furnace according to claim 2, characterized in that: the shape of fixed spout (11) is the horizontally strip, the inboard coefficient of friction of fixed spout (11) is less than throwing material spout (10) inboard coefficient of friction, and throws the inboard coefficient of friction of material spout (10) and is less than the coefficient of friction on convex block group (12) surface.

5. The push plate feeding device of the biomass gasification furnace according to claim 2, wherein: the sliding rod (9) is cylindrical, and the convex block group (12) is wavy at the top end.

6. The push plate feeding device of the biomass gasification furnace according to claim 2, wherein: the guide plate (16) is in a shape that the top end and the bottom end are respectively inclined towards the gasification furnace body (1) and the push rod (4), the inclination direction of the guide plate (16) is the same as the inclination direction of the inclined connection part of the throwing chute (10) and the fixed chute (11), and the vertex of the guide plate (16) far away from the return spring (17) is a round angle.