CN210699383U - Dust collector of broken letter sorting system of scrap iron - Google Patents

Abstract

The utility model discloses a dust removal device of a scrap iron crushing and sorting system, comprising dust collecting hoods respectively arranged above the crusher and the sorting machine. The end of the first settling chamber is connected with the first-level sedimentation chamber, the second-level sedimentation chamber and the exhaust chamber in turn. An arc-shaped dust screen is installed in the first-level sedimentation chamber. The bottom of the first-level sedimentation chamber is provided with a dust collection chamber; A dust-removing cylinder is provided, a dust-scraping mechanism is arranged inside the dust-removing cylinder, a bottom plate is installed at the bottom of the dust-removing cylinder, an dust-discharging channel is left between the bottom plate and the dust-removing cylinder, and a dust-retaining plate is arranged in the dust-discharging channel; An exhaust channel is provided, and the bottom of the exhaust channel is communicated with the bottom of the secondary settling chamber through a communication pipe. The device has reasonable structure, reasonable structure layout, low cost and strong practicability, and after three times of sedimentation and dust removal, the dust removal effect can be significantly improved, and the overall operation efficiency can be improved.

Description

A dust removal device for scrap iron crushing and sorting system

technical field

The utility model belongs to the technical field of steelmaking, in particular to a dust removal device of a scrap iron crushing and sorting system.

Background technique

In my country, the mainstream production process of steel can be divided into two processes, one is a long process from iron ore and coke to pig iron and then to steel, and the other is a short process from iron-containing waste resources to steel. The existing steelmaking process of iron-containing waste resources mainly includes raw material sorting, raw material pulverization, scrap preheating, electric furnace smelting, refining and casting. If reasonable dust removal measures are not taken, it will seriously affect the production environment of the workshop and the health of workers. In the existing technology, after the dust is collected uniformly, it is treated by spraying, which is inconvenient for cleaning. The collection of dust is easy to cause waste of resources, and the effect of dust removal is not ideal. Therefore, it is an objective need to develop a dust removal device for scrap iron crushing and sorting system with reasonable structure, low cost, strong practicability, remarkable dust removal effect, and can greatly improve the dust removal efficiency.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a dust removal device for a scrap iron crushing and sorting system with reasonable structure and layout, low cost, strong practicability, remarkable dust removal effect, and can greatly improve the dust removal efficiency.

The purpose of the utility model is achieved in this way, including dust collecting hoods respectively arranged above the crusher and the sorter, each dust collecting hood is connected to the dust collecting main pipe through a dust collecting branch pipe, and the ends of the integrated main pipe are connected in sequence. There are primary settling chambers, secondary settling chambers and exhaust chambers. An arc-shaped dust screen is installed in the primary settling chamber. The bottom of the primary settling chamber on the concave side of the dust screen is provided with a primary ash discharge pipe. The lower end of the first-stage ash discharge pipe is connected with a dust collection chamber, an ash discharge valve is installed on the first-stage ash discharge pipe, and a beating mechanism is set in the first-stage settling chamber on the convex side of the dust screen; the interior of the second-stage settling chamber is vertical A dust removal cylinder is provided, a plurality of filter holes are processed on the cylinder wall of the dust removal cylinder, and a flanging flange is arranged on the top of the dust removal cylinder. There is a cover plate, the cover plate, the flange flange and the top of the secondary settling chamber are connected and fixed by a plurality of bolts, a dust scraping mechanism is arranged inside the dust removal cylinder, and a bottom plate is installed at the bottom of the dust removal cylinder, and the bottom plate and the dust removal cylinder are installed. There is an ash discharge channel between, a ash baffle plate is arranged in the ash discharge channel, and a slot is arranged inside the bottom plate. On the inner wall of the secondary sedimentation chamber, the bottom surface of the secondary sedimentation chamber is an inclined surface, and the lower side of the inclined surface is provided with a secondary ash discharge pipe that communicates with the dust collection chamber; The bottom of the air channel is communicated with the bottom of the secondary settling chamber through a communication pipe.

Further, the dust scraping mechanism includes a first motor, a rotating rod and 2 to 5 scrapers, the rotating rod is vertically installed in the dust removal cylinder, the first motor is installed on the cover plate, and the first The output shaft of the motor is connected with the rotating rod in a driving manner, and the scraper is mounted on the rotating rod through a connecting rod.

Further, the beating mechanism includes a ratchet wheel, a driving pawl, a stop pawl and a connecting seat, the connecting seat is installed on the inner wall of the first-stage sedimentation chamber, and a first rotating shaft is installed on the connecting seat, and the first rotating shaft is installed on the connecting seat. A beating rod is rotatably installed on a rotating shaft, a rubber hammer is installed on the upper end of the beating rod, a second rotating shaft and a third rotating shaft are installed on the lower end of the beating rod, and the driving pawl is rotatably installed on the second rotating shaft, A support rod is rotatably installed on the third rotating shaft, the stop pawl is installed on the end of the support rod, a second motor is installed on the secondary settling chamber on the lower side of the connecting seat, and the ratchet wheel is installed on the output shaft of the second motor and the ratchet wheels engage with the driving pawl and the stop pawl respectively.

Further, a sealing gasket is arranged between the cover plate and the flange.

Further, an intercepting plate is obliquely installed in the secondary settling chamber on the upper side of the outlet of the primary settling chamber.

Further, a filter screen is installed at the inlet of the exhaust chamber.

Compared with the prior art, the advantages of the present utility model are: firstly, a dust-blocking net is arranged in the first-level sedimentation chamber, and under the blocking action of the dust-blocking net, part of the large particle dust falls to the bottom of the first-level sedimentation chamber, And enter the dust collection room through the first-level dust discharge pipe. After a period of dust removal, the hammering mechanism can be used to tap the dust adhering to the dust-blocking net, so that the dust-blocking net maintains a good dust removal effect; the second is in the second stage. A dust collector is installed in the sedimentation chamber. The dust collector reduces the flow rate of the dust gas and changes the flow direction of the dust gas, so that the particles in the dust gas fall to the bottom of the secondary sedimentation chamber under the filtering and separation of the dust collector, which can realize further dust removal. , and in the process of using the dust removal cylinder, the dust adhering to the dust removal cylinder can be scraped off at any time through the dust scraping mechanism to ensure the dust removal effect and dust removal efficiency of the dust removal cylinder. , which can change the flow direction of the gas, so that the fine dust in the gas settles at the bottom of the exhaust chamber under the action of inertia and gravity, which is conducive to enhancing the effect of dust removal. The device has reasonable structure, reasonable structure layout, low cost and strong practicability. After three times of sedimentation and dust removal, the dust removal effect can be significantly improved, the overall operation efficiency is improved, and it is easy to popularize and use.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the structural representation of the beating mechanism 6;

In the picture: 1- dust collecting hood, 2- dust collecting branch pipe, 3- dust collecting main pipe, 4- primary settling chamber, 5- dust blocking net, 6- hammering mechanism, 61- ratchet wheel, 62- second motor, 63 -Drive pawl, 64-rubber hammer, 65-beating rod, 66-connecting seat, 67-first shaft, 68-second shaft, 69-third shaft, 610-support rod, 611-stop pawl , 7-first-level ash discharge pipe, 8-dust collection chamber, 9-interceptor plate, 10-secondary settling chamber, 11-cover plate, 12-first motor, 13-rotating rod, 14-bolt, 15-seal Gasket, 16-flange flange, 17-exhaust chamber, 18-dusting cylinder, 19-scraper, 20-connecting rod, 21-exhaust channel, 22-connecting pipe, 23-slot, 24-bottom plate, 25- ash baffle, 26- telescopic cylinder, 27- secondary ash discharge pipe.

Detailed ways

The present utility model is further described below in conjunction with the accompanying drawings, but does not limit the present utility model in any way, and any changes or improvements made based on the teachings of the present utility model belong to the protection scope of the present utility model.

As shown in Figures 1-2, the present utility model includes dust collecting hoods 1 respectively arranged above the crusher and the sorter. The dust hood 1 is connected to the dust collection main pipe 3 through the dust collection branch pipe 2, and the end of the integrated main pipe 3 is sequentially connected with the primary settling chamber 4, the secondary settling chamber 10 and the exhaust chamber 17,

The first-stage settling chamber 4 is provided with an arc-shaped dust-blocking net 5, and a first-stage ash discharge pipe 7 is arranged at the bottom of the first-stage settling chamber 4 on the concave side of the dust-proof net 5. The first-stage ash discharge pipe The lower end of 7 is connected with a dust collection chamber 8, an ash discharge valve is installed on the primary ash discharge pipe 7, and a beating mechanism 6 is provided in the primary settling chamber 4 on the convex side of the dust screen 5;

The inside of the secondary settling chamber 10 is vertically provided with a dust removal cylinder 18 , a plurality of filter holes are processed on the cylinder wall of the dust removal cylinder 18 , and a flange 16 is provided on the top of the dust removal cylinder 18 . The flanging flange 16 is covered on the top of the secondary settling chamber 10 , a cover plate 11 is arranged above the flanging flange 16 , the cover plate 11 , the flanging flange 16 and the top of the secondary settling chamber 10 They are connected and fixed by a plurality of bolts 14. A dust scraping mechanism is arranged inside the dust removal cylinder 18. A bottom plate 24 is installed at the bottom of the dust removal cylinder 18. There is an ash discharge channel between the bottom plate 24 and the dust removal cylinder 18. A ash blocking plate 25 is arranged in the ash discharge channel, a slot 23 is arranged inside the bottom plate 24, one side of the ash blocking plate 25 is slidingly matched with the slot 23, and the other side is connected with a telescopic cylinder 26, so the The telescopic cylinder 26 is installed on the inner wall of the secondary settling chamber 10, the bottom surface of the secondary settling chamber 10 is an inclined surface, and the lower side of the inclined surface is provided with a secondary ash discharge that communicates with the dust collection chamber 8. tube 27;

An exhaust channel 21 is arranged in a circuitous manner in the exhaust chamber 17 , and the bottom of the exhaust channel 21 communicates with the bottom of the secondary settling chamber 10 through a communication pipe 22 .

The working process of the device is as follows: under the action of the dust collecting hood 1, the dust generated in the working process of the pulverizer and the sorter enters the dust collecting main pipe 3 through the dust collecting branch pipe 2 in turn, and then enters the first stage through the dust collecting main pipe 3. In the sedimentation chamber 4, the dust enters into the first-level sedimentation chamber 4. Under the blocking action of the dust blocking net 5, part of the large particle dust in the dust gas falls to the bottom of the first-level sedimentation chamber 4, and passes through the first-level ash discharge. The pipe 7 enters the dust collection chamber 8. After a period of dust removal, the beating mechanism can be used to tap the dust adhering to the dust blocking net 5, so that the dust blocking net 5 can maintain a good dust removal effect. The dust gas enters the secondary sedimentation chamber 10, and the dust removal cylinder 18 can reduce the flow rate of the dust gas and change the flow direction of the dust gas, so that the particles in the dust gas fall into the secondary sedimentation chamber under the filtering and separation action of the dust removal cylinder 18. 10, and enters the dust collection chamber 8 through the secondary ash discharge pipe 27, which can realize further dust removal. At the same time, with the continuous increase of the dust removal time, the dust intercepted by the dust removal cylinder 18 also continuously settles in the ash blocking On the board 25, when the dust on the ash blocking board 25 has settled to a certain height, the ash blocking board 25 can be pushed by the telescopic cylinder 26, and the dust blocking board 25 can be inserted into the slot 23, so that the dust discharge channel is opened and the blocking board 25 can be opened. The dust on the ash plate 25 falls to the bottom of the secondary settling chamber 10, and the dust collector 18 can scrape off the dust adhering to the dust collector 18 at any time through the dust scraping mechanism during the use of the dust collector 18 to ensure that the dust collector 18 The dust-removing effect and dust-removing efficiency are improved, and the gas after secondary dust removal by the dust-removing cylinder 18 enters the exhaust chamber 17. Since the detoured exhaust passage 21 can change the flow direction of the gas, the fine dust in the gas can be freed from the inertia and the air. Under the action of gravity, it settles at the bottom of the exhaust chamber 17. Since the bottom of the exhaust chamber 17 is connected with the bottom of the secondary sedimentation chamber 10 through the communication pipe 22, the dust in the exhaust chamber 17 can be introduced into the dust collection chamber 8. It is beneficial to enhance the effect of dust removal, and the gas after three times of sedimentation and dust removal is discharged into the atmosphere through the outlet of the exhaust channel 21 .

Further, the dust scraping mechanism includes a first motor 12, a rotating rod 13 and 2 to 5 scrapers 19, the rotating rod 13 is vertically installed in the dust removal cylinder 18, and the first motor 12 is installed on the cover plate 11, the output shaft of the first motor 12 is connected to the rotating rod 13 in a transmission, the scraper 19 is installed on the rotating rod 13 through the connecting rod 20, and the first motor 12 directly purchases the finished motor from the market according to the power used. When scraping dust, the first motor 12 drives the rotating rod 13 to rotate, and the rotating rod 13 drives the scraper 19 to rotate during the rotation. After the scraper 19 contacts the inner wall of the dust removal cylinder 18, the dust removal cylinder 18 can be glued Attached dust scraping.

Further, the beating mechanism 6 includes a ratchet 61 , a driving pawl 63 , a stop pawl 611 and a connecting seat 66 . The connecting seat 66 is installed on the inner wall of the primary settling chamber 4 , and the connecting seat 66 is installed on the There is a first rotating shaft 67, a beating rod 65 is rotatably installed on the first rotating shaft 67, the upper end of the beating rod 65 is installed with a rubber hammer 64, and the lower end of the beating rod 65 is installed with a second rotating shaft 68 and a third The rotating shaft 69, the driving pawl 63 is rotatably mounted on the second rotating shaft 68, the third rotating shaft 69 is rotatably mounted with a support rod 610, and the stop pawl 611 is installed at the end of the support rod 610, on the lower side of the connecting seat 66 A second motor 62 is installed on the secondary settling chamber 10, the ratchet wheel 61 is installed on the output shaft of the second motor 62, and the ratchet wheel 61 meshes with the driving pawl 63 and the stop pawl 611 respectively. The second motor 62 According to the power used, the finished motor is directly purchased in the market. When the dust screen 5 needs to be knocked to knock off the dust, the second motor 62 drives the ratchet 61 to rotate forward and reverse alternately, and the ratchet 61 passes through during the forward rotation. The ratchet 63 is driven to swing, so that the rubber hammer 64 at the end of the beating rod 65 hits the dust-blocking net 5, thereby achieving the purpose of knocking down the dust. On the contrary, the ratchet 61 reverses and controls the beating rod 65 to return to its original state through the stopping ratchet 611. In this way, the alternating forward rotation and reverse rotation can repeatedly beat and clean the dust shielding net 5.

Further, in order to avoid dust leakage during the dust removal process of the dust removal cylinder 18 , a sealing gasket 15 is provided between the cover plate 11 and the flange 16 .

Further, an intercepting plate 9 is installed obliquely in the secondary precipitation chamber 10 on the upper side of the outlet of the primary precipitation chamber 4 , and the rising speed of the dust gas in the secondary precipitation chamber 10 can be changed by the intercepting plate 9 .

In order to further enhance the effect of dust removal, a filter screen is installed at the inlet of the exhaust chamber 17 .

Claims (6)

1. A dedusting device for scrap iron crushing and sorting system, characterized in that it comprises dust collecting hoods (1) respectively arranged above the crusher and the sorter, and each dust collecting hood (1) passes through a dust collecting branch pipe (1). 2) It is connected with the dust collecting main pipe (3), and the end of the dust collecting main pipe (3) is connected with the primary settling chamber (4), the secondary settling chamber (10) and the exhaust chamber (17) in sequence, An arc-shaped dust-blocking net (5) is installed in the first-stage settling chamber (4), and a first-stage ash discharge pipe ( 7), the lower end of the first-stage ash discharge pipe (7) is connected with a dust collection chamber (8), and an ash-discharge valve is installed on the first-stage ash discharge pipe (7), on the convex side of the dust-blocking net (5). A beating mechanism (6) is provided in the first-level sedimentation chamber (4) of the first stage; The inside of the secondary settling chamber (10) is vertically provided with a dust removal cylinder (18), a plurality of filter holes are processed on the cylinder wall of the dust removal cylinder (18), and the top of the dust removal cylinder (18) is provided with A flanging flange (16), the flanging flange (16) is covered on the top of the secondary settling chamber (10), and a cover plate (11) is arranged above the flanging flange (16), so The cover plate (11), the flanging flange (16) and the top of the secondary settling chamber (10) are connected and fixed by a plurality of bolts (14), and a dust scraping mechanism is provided inside the dust removal cylinder (18). , a bottom plate (24) is installed at the bottom of the dust removal cylinder (18), an ash discharge channel is left between the bottom plate (24) and the dust removal cylinder (18), and a dust baffle plate (25) is arranged in the dust discharge channel, A slot (23) is provided inside the bottom plate (24), one side of the dust baffle (25) is slidingly matched with the slot (23), and the other side is connected with a telescopic cylinder (26), the telescopic The cylinder (26) is installed on the inner wall of the secondary settling chamber (10), the bottom surface of the secondary settling chamber (10) is an inclined surface, and the lower side of the inclined surface is provided with a dust collection chamber (8) Connected secondary ash discharge pipes (27); An exhaust channel (21) is arranged in a circuitous manner in the exhaust chamber (17), and the bottom of the exhaust channel (21) is communicated with the bottom of the secondary settling chamber (10) through a communication pipe (22). 2 . The dust removal device of a scrap iron crushing and sorting system according to claim 1 , wherein the dust scraping mechanism comprises a first motor ( 12 ), a rotating rod ( 13 ) and 2 to 5 scrapers. 3 . (19), the rotating rod (13) is vertically installed in the dust removal cylinder (18), the first motor (12) is installed on the cover plate (11), and the output shaft of the first motor (12) The scraper (19) is mounted on the rotating rod (13) through the connecting rod (20). 3. The dust removal device of a scrap iron crushing and sorting system according to claim 1, characterized in that: the beating mechanism (6) comprises a ratchet (61), a driving pawl (63), a stop pawl ( 611) and a connecting seat (66), the connecting seat (66) is installed on the inner wall of the primary settling chamber (4), and a first rotating shaft (67) is installed on the connecting seat (66). A beating rod (65) is rotatably installed on the rotating shaft (67), the upper end of the beating rod (65) is installed with a rubber hammer (64), and the lower end of the beating rod (65) is installed with a second rotating shaft (68) and The third rotating shaft (69), the driving pawl (63) is rotatably installed on the second rotating shaft (68), the third rotating shaft (69) is rotatably installed with a support rod (610), and the stopping pawl (611) is installed At the end of the support rod (610), a second motor (62) is installed on the secondary settling chamber (10) on the lower side of the connecting seat (66), and the ratchet (61) is installed on the second motor (62) on the output shaft, and the ratchet wheel (61) meshes with the driving pawl (63) and the stop pawl (611) respectively. 4 . The dust removal device of a scrap iron crushing and sorting system according to claim 1 , wherein a gasket ( 15 ) is arranged between the cover plate ( 11 ) and the flange ( 16 ). 5 . 5 . The dust removal device of a scrap iron crushing and sorting system according to claim 1 , wherein the secondary settling chamber ( 10 ) on the upper side of the outlet of the primary settling chamber ( 4 ) is obliquely installed with interceptors. 6 . plate (9). 6 . The dust removal device of a scrap iron crushing and sorting system according to claim 1 , wherein a filter screen is installed at the inlet of the exhaust chamber ( 17 ). 7 .

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