CN216897373U

CN216897373U - Biomass fuel ball-rubbing machine

Info

Publication number: CN216897373U
Application number: CN202123379089.1U
Authority: CN
Inventors: 王艳丽; 安卫春
Original assignee: Hebei Xinda Iron and Steel Group Co Ltd
Current assignee: Hebei Xinda Iron and Steel Group Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-05
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a biomass fuel ball rubbing machine which comprises a shell, wherein a feeding mechanism and a ball rubbing mechanism are arranged in the shell, two drying bins are correspondingly arranged below the ball rubbing mechanism, the bottom of each drying bin is connected with an air supply mechanism, and the side wall of each drying bin is connected with a discharge pipe; the feeding mechanism comprises a feed hopper; the ball rubbing mechanism comprises a fixed cast iron sleeve and a rotating cone pulley which are coaxially arranged, the fixed cast iron sleeve is fixed in the shell through a supporting beam, the rotating cone pulley capable of freely rotating is arranged in the fixed cast iron sleeve, and a ball rubbing cavity is formed between the inner wall of the fixed cast iron sleeve and the outer wall of the rotating cone pulley; the air supply mechanism comprises an annular hot air pipe, and a plurality of vertical hot air branch pipes are arranged above the hot air pipe and connected with the drying bin. The utility model can realize the rapid drying and the extrusion ball rubbing of the biomass straw particles, obtain the biomass fuel balls with high porosity and uniform roundness and realize the rapid feeding of the biomass fuel balls.

Description

Biomass fuel ball-rubbing machine

Technical Field

The utility model relates to the field of biomass fuel production, in particular to a biomass fuel ball rolling machine.

Background

The energy crisis and environmental pollution are common problems facing the world, and the world countries have been catching on developing renewable energy as important work. Biomass is an important energy source which is relied on by human beings for survival, is second to coal, petroleum and natural gas, is the fourth of the total energy consumption in the world, and plays an important role in the whole energy system. Due to the advantages of being renewable, clean, pollution-free and the like, biomass is receiving more and more attention from people.

The biomass fuel is a novel clean fuel which is formed (such as block, particle, sphere and the like) and can be directly combusted by taking agricultural and forestry wastes (such as straws and the like) as raw materials through processes of crushing, mixing, extruding, drying and the like. In the processing process of biomass fuel, biomass particles are often dried and then further extruded and molded. However, a large amount of energy is consumed in the drying process, a long drying time is needed, the dried particles are extruded, the porosity of the obtained biomass fuel is not high, and the conditions of difficult ignition, unstable combustion heat and the like can occur during combustion, so that the application range of the biomass fuel is limited.

Therefore, it is necessary to design a new biomass fuel processing device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, an object of the present invention is to provide a biomass fuel ball-kneading machine, which can perform drying and ball-kneading molding synchronously, and ensure that the biomass fuel balls have good porosity.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a biomass fuel ball rubbing machine comprises a shell, wherein a feeding mechanism and a ball rubbing mechanism coaxially fixed below the feeding mechanism are arranged in the shell, two drying bins are correspondingly arranged below the ball rubbing mechanism, the bottoms of the drying bins are connected with an air supply mechanism for blowing air upwards, and the upper part of the side wall of each drying bin is welded with a discharge pipe which inclines upwards and penetrates through the shell;

the feeding mechanism comprises a feeding hopper arranged in the center of the top of the shell; the ball rubbing mechanism comprises a fixed cast iron sleeve and a rotating cone pulley which are coaxially arranged, the fixed cast iron sleeve is fixed in the shell through a supporting beam, the rotating cone pulley capable of freely rotating is arranged in the fixed cast iron sleeve, and a ball rubbing cavity is formed between the inner wall of the fixed cast iron sleeve and the outer wall of the rotating cone pulley;

the air supply mechanism comprises a hot air pipe connected with a hot air delivery main pipe, and a plurality of vertical hot air branch pipes connected with the drying bin are arranged above the hot air pipe.

The utility model is further improved in that: the feeding mechanism further comprises a bell-shaped material valve arranged below the feeding hopper, the bell-shaped material valve is correspondingly arranged above the rotary cone pulley and realizes opening and closing control through a pneumatic rod.

The utility model is further improved in that: the inner wall of the fixed cast iron sleeve is a conical surface matched with the rotating cone pulley, and an included angle between the inner wall of the fixed cast iron sleeve and the outer wall of the rotating cone pulley is 10-15 degrees.

The utility model is further improved in that: the inner wall of the fixed cast iron sleeve is a smooth inner wall, and a plurality of polishing grooves with the gradient of 45 degrees are uniformly distributed on the outer wall of the rotating cone pulley.

The utility model is further improved in that: the main shaft that the rotation cone pulley is connected runs through casing back fixed connection toper pinion downwards, still fixedly on the outer wall of casing set up a rotating electrical machines, the transmission shaft of rotating electrical machines passes through universal drive shaft and is connected with toper gear wheel transmission, the toper gear wheel is connected with the perpendicular meshing of toper pinion.

The utility model is further improved in that: the biomass fuel ball rolling machine further comprises a reciprocating driving mechanism for driving the rotating cone pulley to reciprocate up and down.

The utility model is further improved in that: the reciprocating driving mechanism is a cam mechanism.

The utility model is further improved in that: the bottom of the feed hopper is also surrounded with an air supply ring pipe, and a plurality of air supply heads are uniformly distributed at the bottom of the air supply ring pipe in the circumferential direction.

Due to the adoption of the technical scheme, the utility model has the technical progress that:

the biomass fuel ball rolling machine provided by the utility model has the advantages that biomass straws are cut up and then directly put into the ball rolling machine, the quick drying and the extrusion ball rolling are synchronously carried out, the drying and ball rolling speed is high, the treatment capacity is large, the quick treatment of biomass straw particles can be met, and the biomass fuel ball rolling machine can be continuously supplied to other working sections as fuel for use.

The utility model adopts the relative rotation of the rotating cone pulley and the fixed cast iron sleeve to realize ball twisting, can reduce the crushing rate of biomass straw particles, maintain the stereometry of biomass fibers, ensure that the biomass fuel balls have good porosity, and improve the air circulation effect and the combustion condition during combustion. Meanwhile, the rotating cone pulley does up-and-down reciprocating motion along the vertical direction while rotating, the ball rubbing motion is converted from two-dimensional motion into three-dimensional motion, biomass straw particles are uniformly stressed from three directions, the particle breakage rate is further reduced, the roundness and the uniformity of the biomass fuel balls are increased, and the overall combustion effect of the biomass fuel balls is improved.

In the process of kneading the balls, the air is supplied from top to bottom through the air supply ring pipe, and the kneading balls are dried simultaneously, so that the drying efficiency and the drying speed of the biomass straw particles are greatly increased; meanwhile, certain floating of straw particles is generated under the blowing of wind power in the ball twisting process, the hard contact of the biomass straw particles and the rotating cone pulley in the ball twisting process is relieved, the crushing of the straw particles caused by hard collision is reduced, and the porosity of the biomass fuel balls is further ensured. After the balls are rubbed, the biomass fuel balls fall into a drying bin for further drying, hot air is uniformly blown out by the annular hot air pipes upwards, the biomass fuel balls are in a suspended state under the action of the hot air and rotate under the action of blowing, and all angles of the fuel balls are fully contacted with the hot air to realize uniform drying.

Drawings

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

FIG. 2 is a schematic view of the structure of the transmission part of the rotating cone pulley of the present invention;

in the figure, 1, a machine shell, 2, a feeding hopper, 3, a bell-shaped material valve, 4, a fixed cast iron sleeve, 5, a rotating cone pulley, 6, a ball rubbing cavity, 7, a discharging pipe, 8, a material receiving part, 9, a main shaft, 10, a conical pinion, 11, a conical big gear, 12, a rotating motor, 13, a universal transmission shaft, 14, a gear transmission box, 15, a reciprocating motor, 16, a crankshaft, 17, a crankcase, 18, an eccentric wheel, 19, an ear plate, 20, a limiting plate, 21, a hot air pipe, 22, a hot air branch pipe, 23, an air supply ring pipe, 24, an air supply head, 25 and a drying bin.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings.

A biomass fuel ball rolling machine, as shown in fig. 1-2, comprising a casing 1. A feeding mechanism and a ball rubbing mechanism are arranged in the machine shell 1, and the ball rubbing mechanism is coaxially fixed below the feeding mechanism; the feeding mechanism is used for uniformly feeding the biomass fuel, and the ball twisting mechanism realizes the extrusion and ball twisting of the fuel. Two drying bins 25 are correspondingly arranged below the ball rubbing mechanism, the bottoms of the two drying bins 25 are connected with air supply mechanisms blowing air upwards, and the upper parts of the side walls of the two drying bins 25 are welded with discharge pipes 7 inclining upwards.

The feeding mechanism is arranged at the top of the shell 1 and comprises a feeding hopper 2 and a bell-shaped material valve 3 which are coaxially arranged. The feed hopper 2 is a conical hopper with a large upper part and a small lower part, so that the feeding is convenient to fill; a bell-shaped material valve 3 is arranged at the bottom of the feed hopper 2 to ensure that biomass straw particles are evenly fed along the circumferential direction; the bell-shaped material valve 3 realizes the opening and closing control of the valve body through a pneumatic rod, and the biomass straw particles are sent into the ball rubbing mechanism below the valve body.

The bottom of the feed hopper 2 is also provided with an air supply ring pipe 23 in a surrounding manner, the air inlet end of the air supply ring pipe 23 is connected with a hot air conveying main pipe, and a plurality of air supply heads 24 are uniformly distributed at the bottom of the air supply ring pipe 23 in the circumferential direction. When feeding, continuously supply air downwards through the air supply head 24, dry the material of feed end by blowing to with the hot-blast convection current from bottom to top, strengthen the drying effect of material.

The ball rubbing mechanism comprises a fixed cast iron sleeve 4 and a rotating cone pulley 5, wherein the fixed cast iron sleeve 4, the rotating cone pulley 5, the feed hopper 2 and the bell-shaped material valve 3 are all coaxially arranged. Fixed cast iron cover 4 is fixed inside casing 1 through a supporting beam, is provided with big end down and can free rotation's rotation cone pulley 5 in the inside of fixed cast iron cover 4, forms between the inner wall of fixed cast iron cover 4 and the outer wall of rotation cone pulley 5 and rubs ball chamber 6 with the hands, the bottom opening of rubbing ball chamber 6 with the hands corresponds the entry of two stoving storehouses 25 respectively, and stoving storehouse 25 bottom is connected with the air supply mechanism of the air-blast that makes progress, the discharging pipe 7 of connecting stoving storehouse 25 is connected with the draught fan. Biomass straw particles uniformly fall into the ball kneading cavity 6 through the bell-shaped material valve 3, and under the rotating extrusion of the fixed cast iron sleeve 4 and the rotating cone pulley 5, the particles are agglomerated and formed by ball kneading; the molded product falls into a drying bin 25 and is suspended in the drying bin 25 under the action of blast air to realize drying; under the negative pressure formed by the induced draft fan, the biomass fuel balls and the hot air are pumped out together, and then the solid-gas separation is carried out to obtain the finished product of the biomass fuel balls.

The inner wall of the fixed cast iron sleeve 4 is a conical surface consistent with the outer wall of the rotating cone pulley 5, and an included angle between the inner wall of the fixed cast iron sleeve 4 and the outer wall of the rotating cone pulley 5 is 10-15 degrees, preferably 10 degrees.

In order to increase friction force and improve the ball rolling efficiency, the inner wall of the fixed cast iron sleeve 4 is a smooth inner wall, a plurality of polishing grooves with the inclination angle of 45 degrees are uniformly distributed on the outer wall of the rotating cone pulley 5, the groove depth of each polishing groove is not more than 5mm, and the phenomenon that the biomass straw particles are embedded in the grooves to cause material eating and influence the ball rolling effect is avoided.

Further, a material receiving part 8 is arranged at the upper part of the fixed cast iron sleeve 4, the material receiving part 8 is in an inverted cone shape with a large upper part and a small lower part, and the discharge end of the bell-shaped material valve 3 is surrounded and coated; after the biomass straw particles flow out of the bell-shaped material valve 3, the center of the cone pulley 5 is rotated along the flow direction of the inner wall of the material receiving part 8, the biomass straw particles uniformly flow into the ball rubbing cavity 6 along the circumferential direction, so that feeding distribution is increased once, the uniformity of raw materials entering the ball rubbing cavity 6 is improved, the uniform stress on the surface of the cone pulley is ensured in the rotating ball rubbing process of the rotating cone pulley 5, and the size uniformity of biomass fuel balls is improved.

The center of the bottom of the rotating cone pulley 5 is connected with a main shaft 9, and the main shaft 9 vertically penetrates through the machine shell 1 downwards and then is fixedly connected with a conical pinion 10; still fixedly set up a rotating electrical machines 12 on the outer wall of casing 1, the transmission shaft of rotating electrical machines 12 passes through universal drive shaft 13 and is connected with the transmission of toper gear wheel 11, toper gear wheel 11 and the transmission of the perpendicular meshing of toper pinion 10. The power of the rotating motor 12 is transmitted to the main shaft 9 through the universal transmission shaft 13, the conical big gear 11 and the conical small gear 10, and the rotating conical wheel 5 rotates horizontally along with the main shaft 9.

The biomass fuel ball rubbing machine further comprises a reciprocating driving mechanism for driving the rotating cone pulley 5 to reciprocate up and down, and the reciprocating driving mechanism is arranged below the machine shell 1. The reciprocating driving mechanism is an actuating mechanism for converting rotary motion into linear motion, and can be a worm and gear mechanism, a rack and pinion mechanism, a cam mechanism and the like, and is preferably the cam mechanism shown in fig. 1 and 2.

As shown in fig. 1 and 2, the reciprocating drive mechanism includes a gear box 14, a reciprocating motor 15, a crankshaft, a crankcase 17, and an eccentric 18. The gear transmission box 14 is fixedly connected with the main shaft 9 and the universal transmission shaft 13 and is used for covering and protecting the conical large gear 11 and the conical small gear 10 which are meshed with each other, so that the stable and continuous horizontal rotation motion is ensured during the up-and-down reciprocating motion.

The crankcase 17 is arranged below the gear transmission box 14, the arched crank shaft 16 is arranged in the crankcase 17, one end of the arched crank shaft 17 penetrates through the wall of the crankcase 17 and is in transmission connection with the main shaft 9 of the reciprocating motor 15, and the other end of the arched crank shaft 16 is arranged in a bearing on the side wall of the crankcase 17, so that the arched crank shaft 16 can rotate in the crankcase 17 under the driving of the reciprocating motor 15. The crankshaft 16 is connected with the gear transmission box 14 through an eccentric wheel 18, one end of the eccentric wheel 18 is hinged with the bottom of the gear transmission box 14, and the other end of the eccentric wheel 18 is hinged with the bent part of the crankshaft 16; when the crankshaft 16 rotates, the gear box 14 is driven to reciprocate up and down through the transmission of the eccentric wheel 18.

Furthermore, two vertical lug plates 19 are arranged at the top of the gear transmission box 14, and the top end of the eccentric wheel 18 is pinned between the two lug plates 19.

Furthermore, the fixed connection mode of the gear transmission case 14, the main shaft 9 and the universal transmission shaft 13 can be various, for example, a flange plate is welded on the outer wall of the main shaft 9 or the universal transmission shaft 13, a through hole is formed in the corresponding position of the gear transmission case 14, and the flange plate and the case body of the gear transmission case 14 are fixed through bolts or fixing pins; alternatively, the main shaft 9 and the universal drive shaft 13 are connected to the inner wall of the gear box 14 through a pipe clamp, and the like. The use of the connection structure is possible as long as the connection structure can be fixed without sliding, and the connection structure is not exhaustive.

Further, a fixed guide sleeve is arranged at the joint of the machine shell 1 and the main shaft 9 and used for ensuring the verticality of the main shaft 9 when the rotating cone pulley 5 moves up and down. When the up-and-down reciprocating amplitude of the rotating cone pulley 5 is 5mm, the thickness of the fixed guide sleeve is not less than 100 mm.

Furthermore, limiting plates 20 are further arranged on two sides of the gear transmission case 14, and the gear transmission case 14 is in clearance fit with the limiting plates 20 on the two sides, so that the verticality of the gear transmission case 14 when the rotating cone pulley 5 moves up and down is ensured.

Further, the rotating electrical machine 12 is fixed through a mounting seat connected to the outer wall of the machine shell 1, when the rotating cone pulley moves up and down in a reciprocating manner, the end of the rotating electrical machine 12 is kept stationary, and continuous transmission is realized by means of the steering of the universal transmission shaft 13.

Further, the universal transmission shaft 13 is a cross-axle type universal spindle, has a simple structure, high transmission efficiency and large transmission torque, and can ensure effective transmission of the rotating motor 12 during the up-and-down movement process of the gear transmission case 14.

The air supply mechanism comprises a horizontal hot air pipe 21, the inlet end of the hot air pipe 21 is connected with a hot air conveying main pipe, and a plurality of vertical hot air branch pipes 22 connected with a drying bin 25 are arranged above the hot air pipe 21. Hot air enters the drying bin 25 from the bottom of the machine shell 1 through the hot air conveying main pipe, the hot air pipe 21 and the hot air branch pipe 22, and the biomass fuel balls are dried by blowing from bottom to top.

The working process of the utility model is as follows:

the biomass straw particles are fed from a feed hopper at the top, are distributed by a bell-shaped material valve and then fall into the ball kneading cavity. Under the rotation and up-and-down reciprocating motion of the rotating cone pulley, the biomass straw particles are extruded and formed by the rotating cone pulley and the fixed cast iron sleeve; the formed biomass fuel balls fall into the drying bin downwards and are suspended and dried by hot air blown in from below.

The dried biomass fuel ball is pumped to the discharge pipe under the action of negative pressure, a biomass fuel ball finished product is obtained after gas-solid separation, and clean tail gas is directly discharged.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims

1. A biomass fuel ball rubbing machine is characterized in that: the drying machine comprises a machine shell (1), wherein a feeding mechanism and a ball rubbing mechanism which is coaxially fixed below the feeding mechanism are arranged in the machine shell (1), two drying bins (25) are correspondingly arranged below the ball rubbing mechanism, the bottom of each drying bin (25) is connected with an air supply mechanism which blows air upwards, and the upper part of the side wall of each drying bin (25) is welded with an upward-inclined discharge pipe (7); the feeding mechanism comprises a feeding hopper (2) arranged in the center of the top of the shell (1); the ball rubbing mechanism comprises a fixed cast iron sleeve (4) and a rotating cone pulley (5) which are coaxially arranged, the fixed cast iron sleeve (4) is fixed inside the casing (1) through a supporting beam, the rotating cone pulley (5) capable of freely rotating is arranged inside the fixed cast iron sleeve (4), and a ball rubbing cavity (6) is formed between the inner wall of the fixed cast iron sleeve (4) and the outer wall of the rotating cone pulley (5); the air supply mechanism comprises a hot air pipe (21) connected with a hot air delivery main pipe, and a plurality of vertical hot air branch pipes (22) connected with the drying bin are arranged above the hot air pipe (21).

2. The biomass fuel ball rolling machine according to claim 1, characterized in that: the feeding mechanism further comprises a bell-shaped material valve (3) arranged below the feeding hopper (2), and the bell-shaped material valve (3) is correspondingly arranged above the rotary cone pulley (5) and realizes opening and closing control through a pneumatic rod.

3. The biomass fuel ball rolling machine according to claim 1, characterized in that: the inner wall of the fixed cast iron sleeve (4) is a conical surface matched with the rotating cone pulley (5), and an included angle between the inner wall of the fixed cast iron sleeve (4) and the outer wall of the rotating cone pulley (5) is 10-15 degrees.

4. The biomass fuel ball rolling machine according to claim 3, characterized in that: the inner wall of the fixed cast iron sleeve (4) is a smooth inner wall, and a plurality of polishing grooves with the gradient of 45 degrees are uniformly distributed on the outer wall of the rotating cone pulley (5).

5. The biomass fuel ball rolling machine according to claim 1, characterized in that: the main shaft (9) that the rotation cone pulley (5) is connected runs through casing (1) back fixed connection toper pinion (10) downwards, still fixed rotating electrical machines (12) that set up on the outer wall of casing (1), the transmission shaft of rotating electrical machines (12) passes through universal drive shaft (13) and is connected with toper gear wheel (11) transmission, toper gear wheel (11) are connected with toper pinion (10) vertical toothing.

6. The biomass fuel ball rolling machine according to claim 5, is characterized in that: the biomass fuel ball twisting machine further comprises a reciprocating driving mechanism for driving the rotating cone pulley (5) to reciprocate up and down.

7. The biomass fuel ball rolling machine according to claim 6, characterized in that: the reciprocating driving mechanism is a cam mechanism.

8. The biomass fuel ball rolling machine according to claim 1, characterized in that: the bottom of the feed hopper (2) is also provided with an air supply ring pipe (23) in a surrounding manner, and a plurality of air supply heads (24) are uniformly distributed at the bottom of the air supply ring pipe (23) in the circumferential direction.