CN106829236B

CN106829236B - Single-point feeding and parallel uniform discharging storage bin device

Info

Publication number: CN106829236B
Application number: CN201710187064.0A
Authority: CN
Inventors: 董芳儒
Original assignee: Yulin Coal Chemical Industry Upgrade Technology Research And Development Center
Current assignee: Yulin Coal Chemical Industry Upgrade Technology Research And Development Center
Priority date: 2017-03-27
Filing date: 2017-03-27
Publication date: 2020-03-31
Anticipated expiration: 2037-03-27
Also published as: CN106829236A

Abstract

The invention discloses a single-point feeding and parallel uniform discharging storage bin device, which comprises a charging barrel (C) and a hopper (D); the bottom of the charging barrel (C) is provided with a hopper (D), the top of the charging barrel (C) is provided with a feeding hole (A) of a storage bin, and the side edge of the feeding hole (A) is provided with a dust discharging hole (B); the material bundling plate for bundling is arranged in the feeding port (A), the material bundling plate is provided with a fan-shaped cross section, the material bundling plate can swing left and right, a plurality of guide cylinders with two ends open, which are concentrically nested together, are arranged in the charging barrel (C), the bottoms and the tops of the guide cylinders are all staggered and are in a ladder shape, wherein the height of the central guide cylinder is highest, the heights of other guide cylinders are gradually reduced, and the discharging port of the hopper is provided with a pendulous pendulum for effectively and uniformly discharging stored materials out of the charging bin. This feed bin device of single-point feeding and parallel even unloading, reasonable increase internals for the feed bin, make the single-point fall into the even storage of the coal granule in the raw materials coal bunker, delay feed cylinder center granule downflow speed simultaneously.

Description

Single-point feeding and parallel uniform discharging storage bin device

Technical Field

The invention belongs to the fields of coal chemical industry and oil shale pyrolysis, and particularly relates to a single-point feeding and parallel uniform discharging storage bin device.

Background

The quality-divided and graded conversion of coal has great significance for promoting the conversion and upgrading of the coal industry and realizing the clean and efficient utilization of the coal, and the coal pyrolysis is the technical core of the quality-divided utilization of the coal. Although the existing process pyrolysis technology routes and key equipment are various and the phenomenon of 'hundreds of flowers are arranged together', the existing process for industrially producing semicoke (also called semi-coke) in China is mainly an internal heating type vertical furnace process, and has the advantages of large building scale, wide distribution region, strong coal adaptation and long running period. With the continuous development of the coal chemical industry in China, the internal heating type vertical furnace process is also developed to be large-scale and intensive, the particle size of the facing raw coal is wider, the initial 30-80 mm particle size gradually develops to be 30mm smaller until the current 20-50 mm particle size, and the self structure and the operation process of the internal heating type vertical furnace process have strict requirements on the particle size distribution uniformity of the raw coal. If the feeding particle size distribution is uneven, the resistance distribution of a bed layer in the pyrolysis process is uneven, high-temperature air flow is uneven in the distribution inside the bed layer, and finally, the pyrolysis reaction is uneven, and the semi-coke quality of a product is poor. In the actual industrial production process, no matter remove the multiple spot feeding or fixed multiple spot feeding, all there is the feeder structure complicacy, and feed bin feeding process is many with external environment connected point, and the dust pollution who causes is difficult to administer.

Patent CN205916576U provides an even unloading funnel of many falling points, including the one-level funnel, the one-level funnel in the parallel four tertiary funnels that are equipped with respectively in the parallel of suitable for reading in that are equipped with four second grade funnels to this analogizes and can establish a plurality of levels funnel respectively according to feed bin size, material specification. After materials in the hopper are fed into the hopper by the feeding hopper, the materials in the middle of the hopper easily flow out, and the materials on the peripheral inclined planes are easily retained, so that the feeding is not uniform, and the uniformity of the materials entering the top plane of the hopper, namely the uniformity of the materials in the material barrel of the hopper is neglected. Secondly, the feeding funnel only plays a role of multi-mixing and gathering, and feeding at the same moving speed is difficult to realize.

In the actual production process, the coal particles have an initial velocity in a horizontal direction or an inclined direction due to the action of the conveying belt in the feeding process, and are influenced by air resistance, and the well-known ratio of the air resistance to the gravity is increased along with the reduction of the particle size. Therefore, segregation of large and small particles occurs in the horizontal direction, and large particles are far from the feed port. Meanwhile, coal particles are continuously accumulated to form a conical pile, the coal particles which continuously fall downwards slide or roll along the inclined conical surface, and smaller particles have enough cavities on the surface of the conical pile to be captured than larger particles and are retained at the top of the conical pile. The larger particles slide or roll primarily to the bottom of the conical pile while providing a sloped fulcrum for the smaller particles, which is an uneven self-tendency for the naturally falling large and small particles to separate from each other, with the large particles scattered at and around the bottom of the cone and the small particles collected at the center of the top of the cone. The top center of the circular material pile is fine particles, large particles are arranged around the conical bottom, the raw material bin passes through the conical discharge hole at the bottom, the acting force of the inner wall of the cone enables the particle blanking speed close to the inner wall of the cone to be slower, the blanking speed of the central area is high, the particle size in the central area is small, the particle size falling into the pyrolysis furnace is uneven, the void ratio is uneven, the air permeability is uneven, the heating is uneven, the pyrolysis is uneven, and the product quality of the pyrolysis semicoke is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the bin device for single-point feeding and parallel and uniform blanking, which reasonably adds internal components to the bin, so that coal particles falling into a raw material coal bin at single points are uniformly stored, and meanwhile, the downward flow speed of particles in the center of a charging barrel is delayed.

The invention is realized by the following technical scheme:

a single-point feeding and parallel uniform blanking storage bin device comprises a charging barrel and a hopper; the bottom of the charging barrel is provided with a hopper, the top of the charging barrel is provided with a feeding hole of a storage bin, and the side edge of the feeding hole is provided with a dust discharging hole; the material bundling plate is arranged in the feeding hole, the material bundling plate is provided with a fan-shaped cross section, the material bundling plate can swing left and right, a plurality of guide cylinders with two ends open are concentrically nested in the material cylinder, the bottoms and the tops of the guide cylinders are staggered and are in a step shape, the height of the central guide cylinder is the highest, the heights of other guide cylinders are gradually reduced, and a pendulous pendulum for effectively and uniformly discharging stored materials out of the material bin is arranged at the discharging hole of the hopper.

The feeding port is provided with a discharging pipe, the discharging pipe of the feeding port extends towards the interior of the charging barrel of the storage bin, the extending part is an extending pipe, two automatically-closed bundling plates are arranged on the extending pipe, each bundling plate is provided with a fan-shaped section and is symmetrically arranged on the axis of the extending pipe, the fan-shaped top ends of the bundling plates are connected with the discharging pipe through hinges, and the bundling plates can swing left and right.

The feed inlet under be provided with central draft tube, central draft tube is outer to be provided with a plurality of draft tubes with one heart nestification, is connected by a plurality of division boards between a plurality of draft tubes, outmost draft tube is connected to the feed cylinder inner wall through a plurality of division boards on, draft tube top contained angle α is less than the angle of repose 2 ~ 5 degrees of feeding granule material, draft tube bottom contained angle β is the same with hopper wall contained angle.

When the charging barrel is square, the guide cylinder is a square guide cylinder, a plurality of square guide cylinders which are concentrically nested are arranged in the square charging barrel, the guide cylinders are connected by partition plates, the guide cylinders are overlooked, and the guide cylinders are distributed in a concentric ring shape; the side-view guide shell is of a middle-shaped structure, and the bottoms and the tops of the guide shells are staggered and in a step shape.

When the material cylinder is circular, the guide cylinder is a circular guide cylinder, a plurality of circular guide cylinders which are concentrically nested are arranged in the circular material cylinder, the plurality of guide cylinders are connected by partition plates, the guide cylinders are arranged in a concentric ring shape when the guide cylinders are overlooked, and the outer guide cylinder is divided into a plurality of semi-circular guide cylinders by the partition plates along the center point; the side-view guide shell is of a middle-shaped structure, and the bottoms and the tops of the guide shells are staggered and in a step shape.

The pendulum comprises a lifting rope for hanging the pendulum and the pendulum, the pendulum is arranged at the discharge port of the hopper, the pendulum is of a conical structure with a small upper part and a big bottom, and the pendulum is hung at the top end by the lifting rope capable of swinging.

The pendulum comprises a square cone pendulum with a large upper bottom and a large lower bottom or a conical pendulum with a large upper bottom, and the square cone pendulum is arranged at the position of the discharge port of the hopper or the conical pendulum is arranged at the position of the discharge port of the hopper.

The hopper discharge port is provided with square cone pendulums which are arranged in a straight line and have small upper parts and large lower parts.

The hopper has a varying cross-sectional area.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention provides a single-point feeding and parallel uniform blanking storage bin device, which reasonably adds internal components to the storage bin, so that coal particles falling into a raw material coal bin at a single point are uniformly stored, and meanwhile, the downward flow speed of the central particles of a charging barrel is delayed by arranging a pendulum.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic top view of a square cartridge.

Fig. 3 is a schematic top view of a circular cartridge.

Fig. 4 is a schematic structural diagram of a feed port retainer plate.

Fig. 5 is a schematic view of a deflector collet angle.

FIG. 6 is a schematic view of a square cone pendulum.

Fig. 7 is a schematic view of a conical pendulum.

In the figure, the letter A is a feeding hole, the letter B is a dust exhaust hole, the letter C is a charging barrel, the letter D is a hopper, the letter E is a discharging hole, the letter F1 is a central guide cylinder, the letter F2 and the letter F3 are guide cylinders, the letter G is a lifting rope, the letter H is a square conical pendulum bob, the letter H' is a conical pendulum bob, and the letter L is a partition plate. Meanwhile, A-1 is an extension pipe, A-2 is a hinge, and A-3 is a material bundling plate.

In the figure, the number 1 is F1 central guide shell area space, 2 is F2 guide shell area space, 3 is F3 guide shell area space, and 4 is F4 guide shell and cylinder area space.

Detailed Description

The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.

Referring to fig. 1 to 7, a single-point feeding and parallel uniform blanking storage bin device comprises a charging barrel C and a hopper D; the bottom of the charging barrel C is provided with a hopper D, the top of the charging barrel C is provided with a feeding hole A of a storage bin, and the side edge of the feeding hole A is provided with a dust discharging hole B; the material bundling plate is arranged in the feeding hole A and provided with a fan-shaped cross section, the material bundling plate can swing left and right, a plurality of guide cylinders with two ends open are concentrically nested in the material cylinder C, the bottoms and the tops of the guide cylinders are staggered and are in a step shape, the height of the central guide cylinder is the highest, the heights of the other guide cylinders are gradually reduced, and a pendulous pendulum for effectively and uniformly discharging stored materials out of the material bin is arranged at the discharging hole of the hopper.

Specifically, the feeding hole A is provided with a blanking pipe, the blanking pipe of the feeding hole extends towards the interior of a charging barrel of the storage bin, the extending part is an extending pipe A-1, two automatically-closed material bundling plates A-3 are arranged on the extending pipe A-1, the material bundling plates A-3 are provided with fan-shaped sections and are symmetrically arranged on the axis of the extending pipe, the fan-shaped top ends of the material bundling plates A-3 are connected with the extending pipe through hinges A-2, and the material bundling plates can swing left and right.

Wherein, the feed inlet under be provided with central draft tube F1, central draft tube F1 is outer to be provided with a plurality of draft tubes with one heart the nestification, be connected by a plurality of division boards L between a plurality of draft tubes, outmost draft tube is connected to on the feed cylinder C inner wall through a plurality of division boards L, draft tube top contained angle α is less than the angle of repose 2 ~ 5 degrees of feeding granule material, draft tube bottom contained angle β is the same with the hopper wall contained angle.

The pendulum comprises a lifting rope G for hanging the pendulum and the pendulum, the pendulum is arranged at the discharge port of the hopper, the pendulum is of a conical structure with a small upper part and a big bottom, and the pendulum is vertically hung at the top end by the lifting rope capable of swinging.

The pendulum comprises a square cone pendulum H with a large upper bottom or a conical pendulum H' with a large upper bottom, and a square cone pendulum is arranged at the position of the hopper discharge port or a conical pendulum is arranged at the position of the hopper discharge port. The hopper discharge port is provided with square cone pendulums H which are arranged in a straight line and have small upper parts and large lower parts. The hopper has a varying cross-sectional area.

Specifically, when the charging barrel is square, the guide cylinder is a square guide cylinder, a plurality of square guide cylinders which are concentrically nested are arranged in the square charging barrel, the plurality of guide cylinders are connected through partition plates, the guide cylinders are overlooked, and the plurality of guide cylinders are distributed in a concentric ring shape; the side-view guide shell is of a middle-shaped structure, and the bottoms and the tops of the guide shells are staggered and in a step shape.

Or when the material cylinder structure is circular, the guide cylinder is a circular guide cylinder, a plurality of circular guide cylinders which are concentrically nested are arranged in the circular material cylinder, the plurality of guide cylinders are connected by partition plates, the guide cylinder is overlooked, the plurality of guide cylinders are distributed in a concentric ring shape, and the outer guide cylinder is divided into a plurality of semi-circular cylinders by the partition plates along a central point; the side-view guide shell is of a middle-shaped structure, and the bottoms and the tops of the guide shells are staggered and in a step shape. A conical pendulum bob is arranged at the discharge port of the hopper and is vertically lifted by a chain rope.

The process of the invention: the feed inlet of feed bin sets up the flitch of restrainting that the material was used, increases a plurality of draft tubes in the feed cylinder of feed bin, and when the feed bin fed material, the material granule was restrainted through restrainting the flitch earlier, makes the perpendicular whereabouts of material granule not take place to segregate, and the material of perpendicular whereabouts passes through the draft tube and carries out filling to the feed bin feed cylinder by the center to substep on every side, makes the material granule misce bene that gets into in the draft tube, reaches the purpose of even storage. Simultaneously in order to let the effectual even discharge feed bin of the material of storage, set up the pendulum that can swing in feed bin hopper exit, slow down feed bin central point and put the material velocity of flow too fast.

The storage bin comprises a charging barrel, a hopper, a bundling plate, a guide barrel inner component and a pendulum, wherein the charging barrel part is provided with a constant cross section area, usually square or round, the charging barrel is closed up when having a variable cross section area, and is usually connected to the bottom of the charging barrel for converging materials, a feeding port is arranged at the top of the charging barrel, a discharging pipe of the feeding port extends towards the inside of the charging barrel of the storage bin, an extending part is an extending pipe, two bundling plates capable of being automatically closed are arranged on the extending pipe, the bundling plates are provided with fan-shaped cross sections and are symmetrically arranged on the axis of the extending pipe, the fan-shaped top ends of the bundling plates are connected with the extending pipe through hinges, the bundling plates can swing left and right, a dust exhaust port is arranged on the side of the feeding port, a central guide barrel is arranged right below the feeding port, the guide barrel is of a plurality of square or round barrel structures with openings at two ends, the guide barrel is mutually nested together in a mode of overlapping center lines, the height of the central guide barrel is highest, the heights of other guide barrels are gradually reduced, the top α of the guide barrel is smaller than the angle of a stop angle of a feeding granular material, an included angle of 2-shaped guide barrel bottom β is the wall of the guide barrel, an included angle of the guide barrel, a pendulum is connected with a pendulum, and.

The process principle is as follows: the raw material coal enters from the feed inlet and is bundled and gathered through the automatically closed bundling plate, so that the phenomenon that material particles fall vertically due to horizontal or inclined acting force generated by the contraction of the feed opening of the belt conveyor or the belt conveyor is eliminated, and the opening angle is automatically adjusted along with the feeding amount. After entering the charging barrel, the coal particles firstly enter a space formed by the raised central guide shell under the action of self gravity, the space in the central guide shell is filled along with the continuous falling of the particles, and after the particles are filled, a conical small bulge is formed at the top of the central guide shell. The top feed inlet of the central guide cylinder continues feeding, the central guide cylinder is full of materials, the falling raw material coal particles can wholly fall off or roll to the region space on the outer edge of the central guide cylinder along the whole particle size (including large particle materials and small particle materials), when the region space on the outer edge is full of materials, the top can form a slope, the included angle of the slope is the angle of repose of the particle materials, and the central guide cylinder continues to extend outwards on the same principle. The feed is stopped when the area between the guide shell of the outermost edge and the barrel is filled to the level of the slope surface. The distribution of the raw material coal particles in the filling area of the whole bin is the same as the falling material state. The invention does not need equipment leveling or pushing mechanism in the storage bin, and realizes the static and uniform storage of the storage bin.

No matter the storage bin is a square material cylinder or a round material cylinder, the blanking speed is high because the particles close to the center line of the storage bin have no shearing resistance in the blanking process, and the particles slide and flow slowly along the wall of the closed hopper. Even the long-time storage can cause the increase of the bulk density of the granules, so that the hardening of the granular materials can be caused, and the blanking is difficult. The invention arranges a pendulum at the discharge hole of the hopper, wherein the pendulum is composed of a lifting rope and a pendulum bob. When falling, the material in the central area of the charging barrel is subjected to the radial shunting action of the pendulum on the material, so that the downward moving speed of the material is slowed down. Secondly, when the feed bin whereabouts material bias flow, the one side material that the falling speed is fast can produce bigger effort to the pendulum side, and the pendulum is deviated vertical position under the effort, beats the pine material to the slow one side of falling speed, finally reaches the balance.

Table 1 shows the inlet and outlet particle size sampling analysis of the raw coal in the examples.

TABLE 1 particle size table for coal feedstock

10 tons of mixed coal are obtained from a Caragana korshinskii tower coal mine, 4.5 tons of raw material coal smaller than 30mm are obtained after vibration screening, and the results of random sampling analysis are shown in Table 1.

The raw material coal enters from the feed inlet A, and is bundled and gathered through the automatically closed bundling plate A-3, so that the raw material coal vertically falls, and the opening angle is automatically adjusted along with the size of the feed amount. After entering the charging barrel C, the coal particles firstly enter a space 1 formed by the raised central guide flow barrel F1 under the action of self gravity, the space 1 in the central guide flow barrel is filled with the particles falling continuously, and after the particles are full, a conical small bulge is formed at the top of the central guide flow barrel F1. The feeding is continued through the top feeding hole A of the central guide cylinder F1, the central guide cylinder F1 is filled, the falling raw material coal particles can completely slide or roll to the regional space 2 of the outer edge of the central guide cylinder in a full-particle size (comprising large particle materials and small particle materials), when the regional space 2 of the outer edge is filled, the top of the central guide cylinder can form a 43-degree slope, and the central guide cylinder continues to extend outwards on the same principle. The feed is stopped when the area between the outermost edge of the guide shell and the barrel C fills to the level of the ramp surface. The distribution of the raw material coal particles in the filling area of the whole bin is the same as the falling material state. The discharge gate valve at the bottom of the storage bin is opened to discharge, and the random sampling results are shown in table 1. The analysis result of the sampling particle size at the inlet and the outlet of the device shows that the particle distribution difference is small, and the uniform storage and uniform blanking effect is obvious.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The bin device for single-point feeding and parallel uniform blanking is characterized by comprising a charging barrel (C) and a hopper (D); a hopper (D) is arranged at the bottom of the charging barrel (C), a feeding hole (A) of a storage bin is arranged at the top of the charging barrel (C), and a dust exhaust hole (B) is formed in the side edge of the feeding hole (A); the material bundling plate for bundling is arranged in the feeding hole (A), the material bundling plate is provided with a fan-shaped cross section and can swing left and right, a plurality of guide cylinders with openings at two ends are concentrically nested in the charging barrel (C), the bottoms and the tops of the guide cylinders are staggered and are in a step shape, wherein the height of the central guide cylinder is the highest, the heights of other guide cylinders are gradually reduced, and a swinging pendulum for effectively and uniformly discharging stored materials out of the charging bin is arranged at the discharging hole of the hopper; the feeding port (A) is provided with a blanking pipe, the blanking pipe of the feeding port extends towards the interior of a charging barrel of the storage bin, the extending part is an extending pipe (A-1), the extending pipe (A-1) is provided with two bundling plates (A-3) capable of being automatically closed, the bundling plates (A-3) are provided with fan-shaped sections and are symmetrically arranged on the axis of the extending pipe, the fan-shaped top ends of the bundling plates (A-3) are connected with the extending pipe through hinges (A-2), and the bundling plates can swing left and right; the hopper has a varying cross-sectional area.

2. The single-point feeding and parallel uniform blanking storage bin device as claimed in claim 1, wherein a central guide cylinder (F1) is arranged right below the feeding hole, a plurality of guide cylinders are concentrically nested outside the central guide cylinder (F1), the guide cylinders are connected through a plurality of partition plates (L), the outermost guide cylinder is connected to the inner wall of the storage bin (C) through the partition plates (L), the included angle α at the top of the guide cylinder is smaller than the angle of repose of feeding granular materials by 2-5 degrees, and the included angle β at the bottom of the guide cylinder is the same as the included angle of the wall of the storage bin.

3. The single-point feeding and parallel uniform blanking storage bin device as claimed in claim 1, wherein when the charging barrel is square, the guide cylinder is a square guide cylinder, a plurality of square guide cylinders which are concentrically nested are arranged in the square charging barrel, the plurality of guide cylinders are connected by partition plates, and when the guide cylinder is overlooked, the plurality of guide cylinders are distributed in a concentric ring shape; the side-view guide shell is of a middle-shaped structure, and the bottoms and the tops of the guide shells are staggered and in a step shape.

4. The single-point feeding and parallel uniform blanking storage bin device as claimed in claim 1, wherein when the material cylinder structure is circular, the guide cylinder is a circular guide cylinder, a plurality of circular guide cylinders which are nested concentrically are arranged in the circular material cylinder, the plurality of guide cylinders are connected by partition plates, the guide cylinder is overlooked, the plurality of guide cylinders are distributed in concentric rings, and the outer guide cylinder is divided into a plurality of semi-circular cylinders by the partition plates along a central point; the side-view guide shell is of a middle-shaped structure, and the bottoms and the tops of the guide shells are staggered and in a step shape.

5. The single-point feeding and parallel uniform blanking bin device as claimed in claim 1, wherein the pendulum comprises a hanging rope (G) for hanging a pendulum and a pendulum, the pendulum is arranged at the discharge port of the hopper, the pendulum is in a conical structure with a small upper part and a big bottom, and the pendulum is hung at the top end by the hanging rope capable of swinging.

6. The single-point feeding and parallel uniform blanking bin device as claimed in claim 5, wherein the pendulum comprises a square cone pendulum (H) with a large upper bottom or a conical pendulum (H') with a large upper bottom, and the hopper discharge port is provided with the square cone pendulum or the hopper discharge port is provided with the conical pendulum.

7. The single-point feeding and parallel uniform blanking bin device as claimed in claim 5, wherein the hopper discharge port is provided with square cone pendulums (H) which are arranged in a straight line and have small upper parts and large lower parts.