CN215877848U

CN215877848U - Brown coal powder forming equipment

Info

Publication number: CN215877848U
Application number: CN202122354591.0U
Authority: CN
Inventors: 龚汉保; 李晓刚; 冯涛; 李征
Original assignee: Jiangsu Lingyang Building Materials Technology Co ltd; Jiangsu Lingyang Cement Engineering Technology Co ltd
Current assignee: Jiangsu Lingyang Building Materials Technology Co ltd; Jiangsu Lingyang Cement Engineering Technology Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-22
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses brown coal powder forming equipment, relates to the technical field of powder material forming, and aims to solve the problems of high energy consumption and low efficiency of the existing coal powder ball pressing technology. Its technical scheme main points are including first squeeze roll and the second squeeze roll that sets up side by side along the horizontal direction, are formed with the blanking clearance that supplies the brown coal powder to pass through between first squeeze roll and the second squeeze roll, its characterized in that: pressing grooves are formed in at least one outer circumferential side wall of the first extrusion roller and the second extrusion roller along the axial direction and the circumferential direction, and the second extrusion roller is connected with a pressurizing device which is used for driving the second extrusion roller to move towards or away from the blanking gap; a powder prepress is arranged above the blanking gap, a feeding hole is formed in the powder prepress, and a finished product collecting hopper is arranged below the blanking gap. The utility model has the effects of prolonging the service life of equipment, reducing energy consumption and improving production efficiency.

Description

Brown coal powder forming equipment

Technical Field

The utility model relates to the technical field of powder material forming, in particular to brown coal powder forming equipment.

Background

The reserve of lignite accounts for about 15% of the total reserve of coal in China, is one of main coal resources, and plays an important role in power and chemical coal in China. Lignite has the following characteristics: the water content is large (15-60% of total water, about 10% of internal water generally), the volatile component is high (> 40%), the humic acid is free, the humic acid is easy to weather and crack in the air, the burning point is low (about 270 ℃), and the humic acid can be easily ignited and spontaneously combusted after being stored for more than two months. Lignite can generate a large amount of coal dust in the weathering fragmentation process, the quality improvement process and the transportation process, the fineness of the coal dust cannot reach the direct combustion standard of a coal dust furnace, and the environment and the body health of operators are seriously influenced. Therefore, the brown coal powder needs to be pressed into a fixed shape, so that the brown coal powder is not easy to weather in the transportation and use processes, the dust pollution is reduced, and the purpose of environmental protection is achieved.

The existing equipment system is generally a coal powder rod making machine, and has the following defects that 1, the prepared coal powder is compressed into forming equipment with a certain strength and a cylindrical or plum blossom shape by utilizing a spiral extrusion principle, and a coal rod outlet at the head part is extruded for a long time, so that the service life is short; 2. as the brown coal powder is mainly internal water, the brown coal powder can be formed only by very high pressure, and the power consumption of the system reaches 50 KW/T; 3. the single machine yield is low, the machine hour yield of the existing equipment is maximum and is also 3-4 t/h, and the equipment is not suitable for mass production.

Therefore, how to improve the efficiency of pressing pulverized lignite into pellets and reduce the power consumption of a pellet pressing system is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide brown coal powder forming equipment which has the effects of prolonging the service life of the equipment, reducing energy consumption and improving production efficiency.

The above object of the present invention is achieved by the following technical solutions:

a brown coal powder forming device comprises a first extrusion roller and a second extrusion roller which are arranged side by side along the horizontal direction, wherein a blanking gap for brown coal powder to pass through is formed between the first extrusion roller and the second extrusion roller, pressing grooves are formed in at least one outer circumferential side wall of the first extrusion roller and the second extrusion roller along the axial direction and the circumferential direction, and the second extrusion roller is connected with a pressurizing device for driving the second extrusion roller to move towards or away from the blanking gap; a powder prepressing machine is arranged above the blanking gap, a feeding hole is formed in the powder prepressing machine, and a finished product collecting hopper is arranged below the blanking gap.

The utility model is further configured to: the pressurizing device comprises a hydraulic cylinder, an oil tank and an energy accumulator, wherein the hydraulic cylinder, the oil tank and the energy accumulator are connected through pipelines.

The utility model is further configured to: the powder pre-pressing machine comprises a box body and a spiral conveying shaft located in the box body, wherein the spiral conveying shaft is arranged in the vertical direction, and the top of the spiral conveying shaft is provided with a pre-pressing drive.

The utility model is further configured to: the forming equipment further comprises a squeezing roller supporting frame, and the squeezing roller supporting frame is fixedly connected with the first squeezing roller and is connected with the second squeezing roller in a sliding mode along the horizontal direction.

The utility model is further configured to: be equipped with double-end motor on the squeeze roll braced frame, two outputs of double-end motor are fixed with two gears respectively, be provided with first ring gear and second ring gear on the terminal surface of first squeeze roll and second squeeze roll respectively, first ring gear and second ring gear respectively with correspond gear engagement, the width of second ring gear is greater than the width that corresponds the gear.

The utility model is further configured to: the finished product collecting hopper is connected with an air duct which is arranged along the vertical direction, the top and the bottom of the air duct are both of a closed structure, a spiral discharging pipe is arranged in the air duct, the top of the discharging pipe is communicated with the finished product collecting hopper, the bottom of the discharging pipe extends out of the air duct, a filtering hole is formed in the discharging pipe, and the air duct is connected with a fan which generates negative pressure in the air duct.

The utility model is further configured to: the cross section of the pressure tank is circular or elliptical, and the aperture of the filter hole is smaller than the particle size of the particles formed by the pressure tank.

In conclusion, the beneficial technical effects of the utility model are as follows:

1. the brown coal powder is compressed into particles by a double-roller extrusion mode through the arrangement of the first extrusion roller, the second extrusion roller, the pressing grooves, the pressurizing device, the powder pre-press, the feeding hole and the finished product collecting hopper, and compared with a coal rod outlet of a traditional coal powder rod making machine, the brown coal powder rod making machine can bear larger extrusion force and prolong the service life of equipment;

2. through the setting of dryer, discharge tube, filtration pore and fan, in shaping granule and the collection fill of unshaped brown buggy got into the discharge tube by the finished product, the shaping granule dropped from the discharge tube bottom under the action of gravity, and unshaped brown buggy breaks away from the dryer by filtration pore entering dryer and finally under the negative pressure effect that the fan formed, realizes the collection of unshaped brown buggy, reduces the environmental pollution risk that brown buggy spills over and causes.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic view of an embodiment of the present invention showing the connection of a second squeeze roll to a squeeze roll support frame;

fig. 3 is a schematic diagram for showing an internal structure of an air duct according to an embodiment of the present invention.

In the figure, 1, pre-pressing driving; 2. a powder preformer; 3. a feed inlet; 4. a first squeeze roll; 5. a second squeeze roll; 6. a pressurizing device; 7. a squeeze roll support frame; 71. a double-headed motor; 72. a gear; 73. a first ring gear; 74. a second ring gear; 8. a finished product collecting hopper; 81. an air duct; 82. a discharge pipe; 83. a fan; 9. and (5) pressing the groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the brown coal powder forming apparatus disclosed by the present invention comprises a first squeeze roller 4 and a second squeeze roller 5 which are arranged side by side along a horizontal direction, and a blanking gap for allowing brown coal powder to pass through is formed between the first squeeze roller 4 and the second squeeze roller 5. And pressing grooves 9 are formed in the outer circumferential side wall of at least one of the first pressing roller 4 and the second pressing roller 5 along the axial direction and the circumferential direction, and the second pressing roller 5 is connected with a pressurizing device 6 for driving the second pressing roller 5 to move towards or away from the blanking gap. A powder prepressing machine 2 is arranged above the blanking gap, and a feeding hole 3 is arranged on the powder prepressing machine 2. A finished product collecting hopper 8 is arranged below the blanking gap.

The pressurizing device 6 comprises a hydraulic cylinder, an oil tank and an energy accumulator, wherein the hydraulic cylinder, the oil tank and the energy accumulator are connected through pipelines. The pressurizing device 6 provides stable external extrusion force for the first extrusion roller 4 and the second extrusion roller 5, and the qualified rate of finished products is guaranteed.

The powder pre-pressing machine 2 comprises a box body and a spiral conveying shaft located in the box body, wherein the spiral conveying shaft is arranged in the vertical direction, and the top of the spiral conveying shaft is provided with a pre-pressing drive 1. The pre-pressing device enables the brown coal powder to be subjected to preliminary extrusion, the density of the brown coal powder is improved, and the follow-up forming is facilitated.

The forming equipment also comprises a squeezing roller supporting frame 7, and the squeezing roller supporting frame 7 is fixedly connected with the first squeezing roller 4 and is connected with the second squeezing roller 5 in a sliding mode along the horizontal direction. In this embodiment, both ends of the rotating shaft of the second squeeze roll 5 are movably connected with the squeeze roll supporting frame 7 through bearing seats, and the pressurizing device 6 also acts on the bearing seats.

Referring to fig. 2, a double-headed motor 71 is arranged on the squeeze roller support frame 7, two output ends of the double-headed motor 71 are respectively fixed with two gears 72, end faces of the first squeeze roller 4 and the second squeeze roller 5 are respectively provided with a first gear ring 73 and a second gear ring 74, the first gear ring 73 and the second gear ring 74 are respectively engaged with the corresponding gears 72, and the width of the second gear ring 74 is greater than that of the corresponding gears 72. The double-headed motor 71 synchronously starts the two gears 72, thereby driving the first squeeze roll 4 and the second squeeze roll 5, which are in meshed connection with the two gears 72 through the first ring gear 73 and the second ring gear 74, to synchronously operate. When the pressurizing device 6 pushes the second pressing roller 5 to move, the moving range of the second pressing roller 5, that is, the moving range of the second gear ring 74 relative to the corresponding gear 72, at this time, the difference between the width of the second gear ring 74 and the width of the corresponding gear 72 should be greater than the moving ranges of the two, so as to ensure that the equipment can normally operate.

Referring to fig. 3, finished product collecting hopper 8 is connected with an air duct 81 arranged along the vertical direction, the top and the bottom of air duct 81 are both of a closed structure, a discharge pipe 82 in the air duct 81 is spiral, the top of discharge pipe 82 is communicated with finished product collecting hopper 8, the bottom of discharge pipe 81 extends out of air duct 81, a filter hole is formed in discharge pipe 82, and air duct 81 is connected with a fan 83 generating negative pressure in air duct 81. The cross section of the pressure tank 9 is round or oval, and the aperture of the filter pores is smaller than the particle size of the particles formed by the pressure tank 9. In the unloading pipe 82 was got into by finished product collection fill 8 to shaping granule and unformed brown buggy, shaping granule dropped from unloading pipe 82 bottom under the action of gravity, and unformed brown buggy gets into in dryer 81 by the filtration pore and finally breaks away from dryer 81 under the negative pressure effect that fan 83 formed, realizes the collection of unformed brown buggy, reduces the environmental pollution risk that brown buggy spills over and causes.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a brown buggy former, includes first squeeze roll (4) and second squeeze roll (5) that set up side by side along the horizontal direction, be formed with the blanking clearance that supplies brown buggy to pass through between first squeeze roll (4) and second squeeze roll (5), its characterized in that: pressing grooves (9) are formed in at least one outer circumferential side wall of the first squeezing roller (4) and the second squeezing roller (5) along the axial direction and the circumferential direction, and the second squeezing roller (5) is connected with a pressurizing device (6) which is used for driving the second squeezing roller (5) to move towards the direction close to or away from the blanking gap; a powder prepressing machine (2) is arranged above the blanking gap, a feeding hole (3) is formed in the powder prepressing machine (2), and a finished product collecting hopper (8) is arranged below the blanking gap.

2. The pulverized lignite forming equipment according to claim 1, wherein: the pressurizing device (6) comprises a hydraulic cylinder, an oil tank and an energy accumulator, wherein the hydraulic cylinder, the oil tank and the energy accumulator are connected through pipelines.

3. The pulverized lignite forming equipment according to claim 1, wherein: the powder pre-pressing machine (2) comprises a box body and a spiral conveying shaft located in the box body, wherein the spiral conveying shaft is arranged in the vertical direction, and the top of the spiral conveying shaft is provided with a pre-pressing drive (1).

4. The pulverized lignite forming equipment according to claim 1, wherein: the forming equipment further comprises a squeezing roller supporting frame (7), wherein the squeezing roller supporting frame (7) is fixedly connected with the first squeezing roller (4) and is connected with the second squeezing roller (5) in a sliding mode along the horizontal direction.

5. The pulverized lignite forming equipment according to claim 4, wherein: be equipped with double-end motor (71) on squeeze roller braced frame (7), two outputs of double-end motor (71) are fixed with two gears (72) respectively, be provided with first ring gear (73) and second ring gear (74) on the terminal surface of first squeeze roller (4) and second squeeze roller (5) respectively, first ring gear (73) and second ring gear (74) respectively with correspond gear (72) meshing, the width of second ring gear (74) is greater than the width that corresponds gear (72).

6. The pulverized lignite forming equipment according to claim 1, wherein: finished product collection fill (8) are connected with dryer (81) that set up along vertical direction, dryer (81) top and bottom are enclosed construction, be provided with in dryer (81) and be spiral helicine discharge tube (82), discharge tube (82) top communicates with each other and bottom stretch out dryer (81) with finished product collection fill (8), the filtration pore has been seted up on discharge tube (82), dryer (81) are connected with fan (83) that produce the negative pressure in dryer (81).

7. The pulverized lignite forming equipment according to claim 6, wherein: the cross section of the pressure tank (9) is circular or elliptical, and the aperture of the filter hole is smaller than the particle size of particles formed by the pressure tank (9).