CN2030912U

CN2030912U - Rotary crashing coal screen

Info

Publication number: CN2030912U
Application number: CN 88210462
Authority: CN
Inventors: 刘英德; 蔺柏如
Original assignee: SHENYANG GAS COMPRESSOR FACTORY
Current assignee: SHENYANG GAS COMPRESSOR FACTORY
Priority date: 1988-04-25
Filing date: 1988-04-25
Publication date: 1989-01-18

Abstract

The utility model provides a crashing coal screen device for automatic boilers. The device solves the problem that crashing and screening coal equipment of prior boilers can be damaged easily by coals, stones and other sundries and the problem of big labor intensity of operating staff. The device is composed of a drive part, a coal sending bucket and a scalper, and the scalper is provided with the comprehensive functions of crashing coal, screening coal and clearing coal, stone and other sundries. The device raises the work efficiency and the quality of work, guarantees the safety of the boiler operation, and is of professional design and convenient maintenance.

Description

Rotary crashing coal screen

The utility model relates to the coaling gear that a kind of broken coal is screened coal, particularly the broken screen of going up of rotation.

Now, automation coal burning boiler room, send coal to burner hearth before, must be through processes such as screening, pulverizing and magnetic separation, be reciprocating screen, coal breaker and magnetic plant etc. and finish the machinery that these work mainly adopt.Old coal supply plant equipment, floor space is big, especially moves back and forth screen, if sieve aperture is little, can only pass through ut, though can block gangue, gathering coal also has been blocked, need manually smash, gangue in the screen needs artificial constantly cleaning in addition, so labor strength is big, and if sieve aperture is big, some gangues even iron block will pass through sieve aperture, are easy to damage other coal supply machinery of coal breaker and boiler.Therefore, the inherent shortcoming of existing coal feeder makes the boiler room staff feel headache.

The purpose of this utility model is to want to solve the problem of screening coal with the existence of broken coal device that has now; provide a kind of operating efficiency and quality higher; can avoid foreign material such as gangue or iron block to equipment damage and device with comprehensive function; this device can carry out broken coal, screen coal and the multiple work of foreign material such as rock spoil removal; alleviate labor strength; the safe handling of protection boiler plant has improved operating efficiency.

The purpose of this utility model is achieved in that it mainly is made up of rotary screen part and drive part.The rotary screen part mainly comprises the bucket of delivering coal, the commentaries on classics sieve of band macropore grid and gets slabstone etc.Its main feature is: changeing sieve has the preceding plectane of band center hole, back support board, is connect by some cylindrical bars between them, and some lengthways of rod are fixed on the cylindrical bar, constitute the screen cloth of well word palisade.The main shaft fixed connection of back support board and drive part hangs the commentaries on classics of whole cylinder cage modle sieve.There are shell, the shell of band coal outlet to be fixed on the support along changeing the sieve outer ring, under centrifugal action, raise conveyer belt place in addition to prevent broken coal.Be equipped with at the center hole place of preceding plectane and get slabstone, get the slabstone bottom the little hoist engine that small machine drives is housed, under the effect of little hoist engine, getting slabstone can enter commentaries on classics sieve center hole or stretch out commentaries on classics sieve center hole, during foreign material such as needs removing gangue, get slabstone and enter commentaries on classics sieve center hole, the foreign material of being missed by the commentaries on classics sieve such as gangue are discharged the commentaries on classics sieve by getting slabstone.

Delivering coal bucket is made up of the fixedly bucket and the vibration bucket of band macropore grid, and fixedly bucket is fixed on the support, fixing bucket with connect with other extension spring of both sides by the hinge of a side wherein between vibration struggles against.Be fixed with outside one and hit iron near changeing sieve one side at vibration bucket.Be uniformly distributed with the bump wheel along the circumference at the preceding plectane that changes sieve, when the commentaries on classics sieve rotated, the outer iron that hits on the continuous bump vibration of the bump wheel bucket struggled against vibration and vibrates, and the coal in the bucket of delivering coal just can leak down smoothly.

Have square hole above commentaries on classics sieve shell, the rotatable iron tyre that a row has constant weight is housed on the hole, they are pressed on the screen cloth that changes sieve, and when in a single day sieve aperture was stopped up by coal, the weight by iron tyre pushed back coal cinder, played the effect of cleaning sieve aperture.Changeing sieve outer casing underpart and the approaching place of feed belt, coal outlet is arranged.At the coal outlet place control device for coal is housed, comprise baffle plate, manual pulley and screw rod, the screw rod that is fixedly connected with manual pulley passes and is fixed on support plate with holes on the shell, the positive and negative thread bush at screw rod two ends two nuts, two forks plate and baffle plates are fixedly connected, and be connected with axostylus axostyle on being fixed on shell by axis hole, fork plate fork-join is on nut, when rotation manual wheel, also rotate with the screw rod of its fixed connection, the nut that thereupon is enclosed within the screw rod two ends moves on screw rod, and stir the fork plate, change its position angle within the specific limits with the baffle plate that is fixedly connected of fork plate, coal outlet is magnified or dwindle, promptly realized the control of defeated coal width on conveyer belt.The window that can open is arranged, so that observe well word sieve situation and convenient for maintaining above coal outlet.

Be welded with in the cylindrical bar inboard of changeing sieve and hit iron in many, head is pointed, and it is broken that coal cinder by the centrifugal force throwing is crashed through, and also plays the effect that takes up coal cinder in rotation simultaneously.

Drive part mainly comprises the bearing composition of main motor, decelerator, main shaft and a pair of supports main shaft, and they all are fixed on the concrete pedestal.

Distinguishing feature of the present utility model is: have screen coal, comprehensive function such as broken coal and rock spoil removal foreign material, operating efficiency and work quality height, alleviated labor intensity of operating staff, and can exempt of the infringement of foreign material such as gangue or iron block equipment, reasonable in design, easy to operate.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model schematic diagram.

Fig. 2 changes the sieve schematic cross-section.

Fig. 3 gets the slabstone schematic diagram.

Fig. 4 is a bump wheel schematic diagram.

Fig. 5 is the pinch roller schematic diagram.

Fig. 6 is a control device for coal schematic diagram.

Referring to accompanying drawing 1～6, the preceding plectane 27 of band center hole and back support board 28 weld together by many cylindrical bars 8, and many round steel 9 vertically are welded on the cylindrical bar 8, constitute the screen cloth of well word palisade.Be welded with on changeing the sieve center position at cylindrical bar 8 and hit iron 29 in a plurality of, head is pointed.Back support board 28 centres are weldingly fixed on drive shaft 4.In the screen cloth outside of changeing sieve shell 24 is housed, shell 24 is fixedly connected on support 20.Shell 24 tops have square opening, and a row has the iron tyre 1 of constant weight to be bound up on by coupling pin 31 and support arm 30 on the shell 24 on limit, hole, and they are pressed on the interior screen cloth of square opening.

Changeing the approaching place of sieve shell 24 bottoms and feed belt 10, have coal outlet, be the width of control coal outlet to feed belt 10 defeated coals, the control device for coal is equipped with at the coal outlet place, it comprises the manual pulley 14 and screw rod 13 that is bound up, screw rod 13 passes and is fixed on support plate with holes on the shell 24 32, at screw rod 13 two ends two sections screw threads that direction is opposite are arranged, two nuts 33 are housed on it, two fork plates 34 weld together with baffle plate 12, junction has an axis hole, and the axostylus axostyle 35 that is fixed on the shell 24 passes axis hole, and fork plate 34 fork-joins are on nut 33, rotation manual wheel 14, the screw rod 13 of fixed connection rotates with it, and dress two nuts 33 thereon move thereupon, and stirs fork plate 34, cause the change of baffle plate 12 space angles, the width that coal is flowed becomes big or diminishes, and for observing screen cloth and easy to maintenance, is provided with the window that can open 11 above coal outlet.Be fixed on the support 20 on the concrete pedestal, its upper end fixed connection fixedly bucket 25, in the fixing bucket 25 macropore grid 26 are housed, fall especially big coal cinder or gangue etc. with screening, fixing bucket 25 end openings and vibration 19 suitable for reading joining of bucket, a side connects by folding 22 therein, the vibration bucket can turn an angle up and down, fixing bucket 25 connects by extension spring 23 both sides in addition with vibration bucket 19, have and hit iron 21 outside one near changeing sieve one face down bondings at vibration bucket 19, along circumference three tape spools are housed at the preceding plectane that changes sieve and hold 38 bump wheel 18, bump wheel 18 by the screw rod on the wheel body 36 and nut 37 fixed connections on the rectangle notch of shell 24.Therefore, the radial position of bump wheel 18 on preceding plectane 27 is adjustable, to adapt to and to vibrate outer matching requirements of hitting the iron position on the bucket 19.At the center hole place of preceding plectane 27 ligule is housed and gets slabstone 10, getting slabstone 10 is tilted to hold up by the dragging track 39 that is fixed on the support 20, the little hoist engine 40 that below getting slabstone 10, has a small machine 15 to drive, drag and get slabstone 10 and move back and forth, its stroke is controlled by a pair of lead limit switch, gets entering or stretch out and changeing sieve and realize by pressing action button of slabstone 10.

The course of work of this device is as follows: with grab bucket or loading machine coal is poured into the bucket of delivering coal, coal is through the screening of macropore grid 26 in the fixing bucket 25, especially big barred also removed, the coal that leaked macropore grid 26 is through vibration bucket 19, flow into the commentaries on classics sieve by plectane 27 center holes before changeing sieve, since change the sieve centrifugal action and in bump iron 29 effect, coal cinder is taken up, rotary collision in sieve, and coarse coal is clashed into broken and is leaked down by screen cloth, let out on the feed belt 10 by coal outlet, and remaining in changeing sieve be foreign material such as the gangue that is not broken or iron block, at this moment, handle and get slabstone 17 and enter to change and sieve, foreign material such as gangue just drop on to be got on the slabstone 17, skids off commentaries on classics and sieves and be eliminated.

Drive part has main motor 2, decelerator 3, connects by main shaft 4 and commentaries on classics sieve, and a pair of passive bearing 6 is arranged on the main shaft 4, and they all are fixed on the cement pedestal 7.

Claims

1, screen in a kind of rotation fragmentation that is used for boiler coal feeding comprises drive part and by delivering coal bucket and change the rotary screen part that screen banks becomes, it is characterized in that:

A, commentaries on classics sieve have preceding plectane, the back support board of band center hole, and by the cylindrical bar fixed connection, the lengthways of rod fixed connection is formed screen cloth on cylindrical bar, hit iron in the cylindrical bar inboard is welded with;

The main shaft fixed connection of b, the back support board that changes sieve and drive part together;

The slabstone of getting that can enter or stretch out preceding plectane center hole is equipped with at c, preceding plectane center hole place.

2, the broken upward screen of rotation according to claim 1, it is characterized in that: the fixedly bucket of band macropore grid and vibration struggle against and form the bucket of delivering coal, and the hinge that is equipped with by a side between fixing bucket and vibration struggling against is connected with the extension spring that be equipped with other both sides.

3, the broken screen of going up of rotation according to claim 1, it is characterized in that: a side of vibration bucket is fixed with the outer iron that hits, and preceding plectane is uniformly distributed along the circumference rotating bump wheel is housed.

4, the broken screen of going up of rotation according to claim 1 is characterized in that: change sieve shell top and have square hole, be equipped with rotatingly on the hole, the pinch roller of constant weight is arranged, pinch roller is pressed on the screen cloth that changes sieve.

5, the broken screen of going up of rotation according to claim 1, it is characterized in that: change sieve coal outlet place the adjustable control device for coal of letting out the coal width is housed, it has on the screw rod that is fixedly connected with manual pulley, the screw rod is equipped with nut, and the fork plate fork-join that is fixedly connected with baffle plate is on nut.

6, the broken screen of going up of rotation according to claim 1 is characterized in that: get to be equipped with under the slabstone to drag and get the little hoist engine that slabstone moves back and forth, driven by small machine.