CN109092663B

CN109092663B - Thick and thin separator of power plant combustion system coal conveying

Info

Publication number: CN109092663B
Application number: CN201810870666.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Datang Linzhou Thermoelectricity Co ltd
Current assignee: DATANG LINZHOU THERMOELECTRICITY Co.,Ltd.
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2020-11-27
Anticipated expiration: 2038-08-02
Also published as: CN109092663A

Abstract

The invention provides a device for separating the fineness of coal transported by a combustion system of a power plant, which comprises: the device comprises an outer cylinder, a separation screen cylinder, a crushing roller, a brush roller, a separation shaft and a mixing blade; the utility model discloses a separation sieve section of thick bamboo, including a separation sieve section of thick bamboo, the support column that sets up through its lower extreme both sides equidistance is installed in the inside of urceolus, and the other end welding of a separation sieve section of thick bamboo covers in the outer end of urceolus, equidistant welding has the stirring leaf on the separation axis of baffle front side, still be equipped with crushing axle under the separation axis of baffle rear side, crushing axle is fixed with crushing roller, and the gear of crushing roller both sides is connected with the epaxial gear engagement of separation respectively, the square inlet pipe of feeding side fill bottom passes the urceolus and penetrates the inside upper end of a separation sieve section of thick. The sieve mesh falls into the urceolus under the stirring of stirring leaf, and the defeated coal large granule that does not sieve flows into the rear end downside of a separator cylinder and smashes under the effect of crushing roller, and the brush roller of crushing roller inclined upper both sides can clean the crushing roller, makes more cleaner on the crushing roller.

Description

Thick and thin separator of power plant combustion system coal conveying

Technical Field

The invention relates to the technical field of coal conveying separation of power plants, in particular to a coal conveying thickness separating device of a combustion system of a power plant.

Background

The coal conveying system in the power plant refers to a conveying device and a control device for coal between a coal unloading point and a coal yard and between the coal yard and a coal bunker of a boiler, and the coal flowing into the boiler is coal with small particles or powdered coal.

Therefore, the conventional coal conveying coarse-fine separation device comprises: the structure is single, the coal blocks which accord with the sieve pores in the coal conveying process and the coal blocks with larger diameters are separated by sieving through vibration, the coal blocks with larger diameters cannot be further processed, and the working efficiency is reduced.

Disclosure of Invention

Problem (A)

In summary, the present invention provides a coal conveying thickness separating device for a combustion system of a power plant, which solves the problem of single structure, that is, the coal pieces meeting the sieve holes in the coal conveying are separated from the coal pieces with larger diameters by vibration, and that the coal pieces with larger diameters cannot be further processed, and the work efficiency is reduced, by improving the structure and functionality.

(II) technical scheme

The invention provides a coarse and fine separation device for coal conveying of a combustion system of a power plant, which is used for further crushing large-particle coal blocks which are not separated on the coarse and fine separation device for coal conveying of the combustion system of the power plant and cleaning a crushing roller. The invention provides a device for separating coal from coal transported by a combustion system of a power plant, which specifically comprises: the device comprises a supporting frame, a semicircular groove, an outer cylinder, a discharge port, a discharge connecting plate, a conical cover, a separation motor, a feeding square hopper, a separation screen cylinder, a supporting column, a partition plate, a flow port, a crushing shaft, a crushing roller, a brush rotating shaft, a brush roller, a separation shaft, a stirring blade, a gear and a bearing; the top of the supporting frame is provided with a semicircular groove, the outer barrel is welded in the semicircular groove, one end of the outer barrel is welded with a conical cover, the lower end of the other end cover of the outer barrel is provided with a discharge hole, the separating screen cylinder is installed in the outer barrel through supporting columns arranged on two sides of the lower end of the separating screen cylinder at equal intervals, one end of the separating screen cylinder extends to the conical cover, the other end of the separating screen cylinder is welded on the outer end cover of the outer barrel, the separating shaft penetrates through a bearing in the middle of the conical cover and penetrates through a bearing on the partition plate to be inserted into the bearing of the outer end cover of the outer barrel, stirring blades are welded on the separating shaft on the front side of the partition plate at equal intervals, the separating motor is fixed at one end of the top of the supporting frame through bolts and is connected with the separating shaft through a coupler, a crushing shaft is further arranged under the separating shaft on the, crushing axle is fixed with crushing roller, and the gear of crushing roller both sides is connected with the epaxial gear engagement of separation respectively, the top one end at the urceolus is established to the square fill of feeding, and the square inlet pipe of feeding square fill bottom passes the urceolus and penetrates the inside upper end of a separation sieve section of thick bamboo.

Further, the top end face of the supporting frame is integrally inclined downwards towards the discharging opening side.

Furthermore, the outer cylinder wall of the discharge port end extends outwards and downwards to form a discharge connection plate.

Furthermore, a plurality of groups of sieve holes are annularly arranged on the whole separating sieve cylinder.

Furthermore, the bottom of the partition plate is provided with a circulating port with an arc-shaped structure.

Further, a 1cm gap is formed between the bottom side of the crushing roller and the inner wall of the bottom side of the separation screen cylinder.

Furthermore, the positions of two sides above the crushing shaft are respectively provided with a brush rotating shaft, two ends of the brush rotating shaft are respectively inserted into the bearing on the partition plate and the outer end cover of the outer barrel, and brush rollers are fixed on the brush rotating shafts.

Furthermore, the outer end of the brush on the brush roller is tightly attached to the outer end of the crushing roller.

(III) advantageous effects

The invention provides a thickness separating device for coal conveying of a combustion system of a power plant, which is provided with a stirring blade and a crushing roller, when the coal conveying flows into a separating screen cylinder through a feed hopper, the coal conveying can fall into an outer cylinder through screen holes on the separating screen cylinder under the stirring of the stirring blade and flows out through a discharging connecting plate along an inclined outer cylinder, large particles of the coal conveying which is not sieved flow into the lower side of the rear end of the separating cylinder and are crushed under the action of the crushing roller, and the crushed coal conveying can also fall into the outer cylinder through the screen holes on the separating screen cylinder and flow out.

The setting of brush roller is through crushing roller to defeated coal large granule kibbling in-process, and the brush roller of crushing roller inclined upper both sides can clean crushing roller, can make more clean on the crushing roller, avoids being stained with the coal cake on the crushing roller, influences crushing effect.

Drawings

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

FIG. 2 is another side view of the present invention;

FIG. 3 is a schematic view of the right end of the present invention showing the internal structure thereof in section;

FIG. 4 is an enlarged schematic view of the invention at A;

FIG. 5 is another side view of the present invention in FIG. 3;

FIG. 6 is an enlarged view of the structure at B of the present invention;

FIG. 7 is a schematic view of the left side of the separator of the present invention showing the internal structure in full section;

FIG. 8 is a schematic view of another side elevation of the present invention shown in FIG. 7;

fig. 9 is a schematic view of the present invention with the partition removed from fig. 8.

In fig. 1 to 9, the correspondence between the part names or lines and the reference numbers is:

the device comprises a supporting frame-1, a semicircular groove-101, an outer cylinder-2, a discharge port-201, a discharge connecting plate-202, a conical cover-203, a separation motor-3, a feed square hopper-4, a separation screen cylinder-5, a support column-501, a partition-502, a circulation port-5021, a crushing shaft-503, a crushing roller-504, a brush rotating shaft-505, a brush roller-506, a separation shaft-6, a stirring blade-601, a gear-7 and a bearing-8.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1 to fig. 9.

In order to solve the problems that large coal blocks cannot be further processed after coal conveying particles are separated in a coal conveying coarse-fine separation device in the prior art and the working efficiency is reduced, the invention provides a coal conveying coarse-fine separation device for a combustion system of a power plant, which is used for further crushing large coal blocks which are not separated on the coal conveying coarse-fine separation device for the combustion system of the power plant and cleaning a crushing roller, and comprises the following components: the device comprises a supporting frame 1, a semicircular groove 101, an outer cylinder 2, a discharge port 201, a discharge connecting plate 202, a conical cover 203, a separating motor 3, a feeding square bucket 4, a separating screen cylinder 5, a supporting column 501, a partition plate 502, a circulation port 5021, a crushing shaft 503, a crushing roller 504, a brush rotating shaft 505, a brush roller 506, a separating shaft 6, a stirring blade 601, a gear 7 and a bearing 8; the top of the supporting frame 1 is provided with a semicircular groove 101, the outer barrel 2 is welded in the semicircular groove 101, one end of the outer barrel 2 is welded with a conical cover 203, the lower end of the other end cover of the outer barrel 2 is provided with a discharge hole 201, the separating screen barrel 5 is installed in the outer barrel 2 through support columns 501 arranged on two sides of the lower end of the separating screen barrel at equal intervals, one end of the separating screen barrel 5 extends to the conical cover 203, the other end of the separating screen barrel 5 is welded on the outer end cover of the outer barrel 2, the separating shaft 6 penetrates through a bearing 8 in the middle of the conical cover 203 and penetrates through a bearing 8 on the partition plate 502 to be inserted into the bearing 8 on the outer end cover of the outer barrel 2, a stirring blade 601 is welded on the separating shaft 6 on the front side of the partition plate 502 at equal intervals, the separating motor 3 is fixed at one end of the top of the supporting frame 1 through bolts, the separating motor 3 is connected with the separating, and the two ends of the crushing shaft 503 are respectively inserted into the bearing 8 on the partition plate 502 and the outer end cover of the outer cylinder 2, the crushing shaft 503 is fixed with the crushing roller 504, the gears 7 on the two sides of the crushing roller 504 are respectively meshed and connected with the gears 7 on the separating shaft 6, the feeding square bucket 4 is arranged at one end of the top of the outer cylinder 2, and the square feeding pipe at the bottom of the feeding square bucket 4 penetrates through the outer cylinder 2 and penetrates into the upper end of the inside of the separating screen cylinder 5.

The top end face of the supporting frame 1 is inclined downwards by 10 degrees towards the side of the discharge port 201, so that large coal conveying particles which are not sieved flow into the lower side of the rear end of the separation screen drum 5, and the coal conveying particles falling into the bottom of the inner side of the outer drum 2 flow downwards.

Wherein, the outer cylinder 2 wall of discharge gate 201 end has ejection of compact fishplate bar 202 outwards downwardly extending, prolongs to the flow direction that flows out to defeated coal granule in outer cylinder 2 to flow on next transmission through ejection of compact fishplate bar 202.

Wherein, the whole separating screen cylinder 5 is provided with a plurality of groups of screen holes in an annular shape, so that the coal conveying particles entering the separating screen cylinder 5 can flow into the outer cylinder 2 through the screen holes.

Wherein, the bottom of baffle 502 is equipped with the circulation mouth 5021 of arc structure, makes things convenient for the defeated coal large granule that the upside of 5 front ends of separation sieve section of thick bamboos was not sieved to permeate through circulation mouth 5021 and flow to rear side lower extreme.

A1 cm gap is formed between the bottom side of the crushing roller 504 and the inner wall of the bottom side of the separation screen cylinder 5, so that the crushing roller 504 is prevented from contacting the bottom side of the separation screen cylinder 5, and the crushing size of large-particle coal conveying can be limited.

Wherein, the two sides of the oblique upper side of the pulverizing shaft 503 are both provided with a brush rotating shaft 505, and the two ends of the brush rotating shaft 505 are respectively inserted into the baffle plate 502 and the bearing 8 on the outer end cover of the outer cylinder 2, and the brush rollers 506 are fixed on the brush rotating shaft 505, and in the process of pulverizing large coal particles, the brush rollers 506 on the two sides of the oblique upper side of the pulverizing roller 504 can clean the pulverizing roller 504.

Wherein, the outer ends of the brushes on the brush roller 506 are closely attached to the outer ends of the crushing rollers 504, so that the crushing rollers 504 can be cleaner.

The specific use mode and function of the embodiment are as follows: in the invention, during the coal conveying process, the coal conveying is firstly sent into the feeding square hopper 4 through the conveying device, and the separation motor 3 is started, the separation motor 3 drives the separation shaft 6 to rotate through the motor shaft and the shaft coupling, and simultaneously the stirring blades on the separation shaft 6 synchronously rotate along with the separation shaft, thereby screening the coal conveying entering the separation screen cylinder 5, leading the coal conveying particles meeting the screen holes to fall into the bottom side in the outer cylinder 2, and flows to the next transmission device along the inclined outer cylinder 2 through the discharge port 201 and the discharge connection plate 202, the crushing roller 504 also rotates by following under the action of the gear 7 on the separation shaft 6 and the gear 7 on the crushing shaft 503, the large particles of the coal conveyor which are not screened flow to the lower side of the rear end of the separation screen cylinder 5, and pulverized by the pulverizing roller 504, and the pulverized coal can fall into the outer cylinder 2 through the sieve holes of the separation sieve cylinder 5 and flow out.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a thick and thin separator of power plant combustion system defeated coal for the big granule coal cinder that does not separate on the thick and thin separator of the defeated coal of power plant combustion system further smashes to clean crushing roller, its characterized in that includes: the device comprises a supporting frame (1), a semicircular groove (101), an outer cylinder (2), a discharge hole (201), a discharge connecting plate (202), a conical cover (203), a separation motor (3), a feeding square hopper (4), a separation screen cylinder (5), a supporting column (501), a partition plate (502), a circulation port (5021), a crushing shaft (503), a crushing roller (504), a brush rotating shaft (505), a brush roller (506), a separation shaft (6), stirring blades (601), a gear (7) and a bearing (8); the top of the supporting frame (1) is provided with a semicircular groove (101), the outer barrel (2) is welded in the semicircular groove (101), one end of the outer barrel (2) is welded with a conical cover (203), the lower end of the other end cover of the outer barrel (2) is provided with a discharge hole (201), the separating screen barrel (5) is arranged in the outer barrel (2) through support columns (501) which are arranged on two sides of the lower end of the separating screen barrel at equal intervals, one end of the separating screen barrel (5) extends to the conical cover (203), the other end of the separating screen barrel (5) is welded on the outer end cover of the outer barrel (2), the separating shaft (6) penetrates through a bearing (8) in the middle of the conical cover (203) and penetrates through a bearing (8) on the partition plate (502) to be inserted into the bearing (8) of the outer end cover of the outer barrel (2), and a stirring blade (601) is welded on the separating shaft (, the separation motor (3) is fixed at one end of the top of the support frame (1) through a bolt, the separation motor (3) is connected with the separation shaft (6) through a coupler, a crushing shaft (503) is further arranged right below the separation shaft (6) on the rear side of the partition plate (502), two ends of the crushing shaft (503) are respectively inserted into bearings (8) on the partition plate (502) and an outer end cover of the outer barrel (2), the crushing shaft (503) is fixedly provided with a crushing roller (504), gears (7) on two sides of the crushing roller (504) are respectively meshed with gears (7) on the separation shaft (6) and connected, the feeding square hopper (4) is arranged at one end of the top of the outer barrel (2), and a square feeding pipe at the bottom of the feeding square hopper (4) penetrates through the outer barrel (2) and penetrates into the upper end of the inside of the separation screen barrel (5);

the top end face of the supporting frame (1) is integrally inclined downwards by 10 degrees towards the side of the discharge hole (201);

a discharge connecting plate (202) extends outwards and downwards from the wall of the outer cylinder (2) at the discharge port (201) end;

a plurality of groups of sieve pores are annularly arranged on the whole separating sieve cylinder (5);

the bottom of the clapboard (502) is provided with a circulation port (5021) with an arc structure;

a 1cm gap is formed between the bottom side of the crushing roller (504) and the inner wall of the bottom side of the separation screen cylinder (5);

two sides of the obliquely upper part of the crushing shaft (503) are respectively provided with a brush rotating shaft (505), two ends of the brush rotating shaft (505) are respectively inserted into the partition plate (502) and a bearing (8) on the outer end cover of the outer cylinder (2), and brush rollers (506) are fixed on the brush rotating shafts (505);

the outer ends of the brushes on the brush rollers (506) are tightly attached to the outer ends of the crushing rollers (504);

at the coal conveying in-process, at first send the coal into the feeding square bucket through conveyer, and start the separation motor, the separation motor passes through the motor shaft and drives the release shaft rotation with the shaft coupling, the epaxial stirring leaf of release is also following the rotation in step simultaneously, thereby carry out the screening to the coal that enters into in the release sieve section of thick bamboo, the coal granule that accords with the sieve mesh falls into the inside bottom side of urceolus, and flow through discharge gate and ejection of compact fishplate bar along the urceolus of slope form, crushing roller also follows the rotation under the effect of gear on release shaft and the epaxial gear of crushing, the big granule coal that does not sieve flows into the rear end downside of release sieve section of thick bamboo, and smashed under the effect of crushing roller, the coal after smashing falls into the urceolus through the sieve mesh on the release sieve section of thick bamboo and.