CN108619840B

CN108619840B - Dust recovery system

Info

Publication number: CN108619840B
Application number: CN201810535202.4A
Authority: CN
Inventors: 张朝友; 赵明伦; 袁志勇; 袁世国
Original assignee: Guizhou Huanke Environmental Engineering Co ltd
Current assignee: Guizhou Huanke Environmental Engineering Co ltd
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2020-11-03
Anticipated expiration: 2038-05-29
Also published as: CN108619840A

Abstract

The invention belongs to the technical field of environmental protection systems, and particularly discloses a dust recovery system which comprises a cooling unit, the dust removal unit comprises a dust removal box, a partition plate separates an upper portion and a lower portion of the dust removal box into an air purification chamber and a filter chamber, a plurality of fixed filter bags and movable filter bags are alternately arranged in the filter chamber, an exhaust mechanism is arranged in the air purification chamber, the upper end of each movable filter bag is connected with a lifting mechanism, the lifting mechanism is connected with the exhaust mechanism, the exhaust mechanism can drive the movable filter bags to lift through the lifting mechanism, an upper scraper is arranged on the upper portion of each movable filter bag, a lower scraper is arranged on the lower portion of each fixed filter bag, a rotating shaft driven by the lifting mechanism is connected to the inner rotation of each fixed filter bag, flexible leaves are arranged on the rotating shaft, the recovery unit comprises a feeding mechanism and a screening mechanism, the feeding mechanism is communicated with. This scheme realizes the deashing to the filter bag at the filterable in-process of dust, and dust collection efficiency, dust recovery efficiency is high.

Description

Dust recovery system

Technical Field

The invention belongs to the technical field of environmental protection systems, and particularly relates to a dust recovery system.

Background

A large number of industrial furnaces are arranged in the metallurgy, building material, chemical industry and electric power industry of China, a large amount of dust-containing smoke is generated in the production and operation processes, the smoke must be dedusted and purified according to the regulations of the national environmental protection law, the emission reaching the standard is realized, and the dust must be recycled. Flue gas dust removal purifies and utilizes bag collector to go on, and when dust was more on the dust removal in-process filter bag, the filtration resistance that can make the dust is great, is difficult to normal operating, must carry out the deashing to the filter bag and handles, and current bag collector utilizes compressed gas's recoil to realize the deashing to the filter bag usually, must interrupt the dust removal during the deashing however for the dust removal can not be going on in succession, leads to the dust collection efficiency low, and then leads to the dust recovery efficiency low.

Disclosure of Invention

The invention aims to provide a dust recovery system to solve the problems of low dust removal efficiency and low dust recovery efficiency.

In order to achieve the purpose, the basic scheme of the invention is as follows: a dust recovery system comprises a cooling unit, a dust removal unit and a recovery unit, wherein the cooling unit comprises a cooling box and a cooling mechanism arranged in the cooling box, a plurality of guide plates are alternately arranged on the left and right sides in the cooling box, drying agents are arranged on the guide plates, the dust removal unit comprises a dust removal box, a partition plate is arranged in the dust removal box and divides the upper part and the lower part of the dust removal box into a clean air chamber and a filter chamber, the filter chamber is communicated with the cooling box, a dust hopper is arranged at the lower end of the filter chamber, a plurality of fixed filter bags and movable filter bags are alternately arranged in the filter chamber, openings of the fixed filter bags and the movable filter bags are both positioned in the clean air chamber, an exhaust mechanism is arranged in the clean air chamber, the upper end of the movable filter bags is connected with a lifting mechanism, the lifting mechanism is connected with the exhaust mechanism, the movable filter bags can be driven to lift, the rotary shaft is connected with the fixed filter bag in a rotating mode, the flexible blades are arranged on the rotary shaft, the transmission mechanism is connected between the rotary shaft and the lifting mechanism, the lifting mechanism can drive the rotary shaft to rotate through the transmission mechanism when acting, the recovery unit comprises a feeding mechanism used for conveying dust and a screening mechanism used for screening and grading the dust, the feeding mechanism is communicated with the ash bucket, and the screening mechanism is communicated with the feeding mechanism and located at one end, far away from the ash bucket, of the feeding mechanism.

The working principle of the basic scheme is as follows: the dirty flue gas of high temperature at first gets into the cooling case, because the cooling incasement is equipped with cooling mechanism, so the flue gas that gets into the cooling incasement can be cooled down by cooling mechanism, simultaneously because cooling incasement is controlled and is provided with a plurality of guide plates in turn, so the flue gas can only slowly flow along the passageway that the guide plate formed, thereby can prolong the time of flue gas in the cooling case, make the flue gas can be by thorough cooling, simultaneously because be equipped with the drier on the guide plate, so the flue gas when flowing along the guide plate, the drier can absorb containing steam in the flue gas, make the flue gas of discharging in the cooling case be cryodrying.

The filter chamber is communicated with the cooling box, so that low-temperature dry flue gas can flow into the filter chamber from the cooling box, a part of coarse dust particles fall into the dust hopper due to reasons such as inertial collision, natural sedimentation and the like, most of fine dust particles rise along with air flow, and the filter chamber is internally provided with the movable filter bag and the fixed filter bag, and after being filtered by the movable filter bag and the fixed filter bag, the dust particles can be retained outside the movable filter bag and the fixed filter bag, and purified gas can pass through the side walls of the movable filter bag and the fixed filter bag to enter the movable filter bag and the fixed filter bag, flows upwards into the gas purifying chamber and then is discharged. And starting the air exhaust mechanism in the filtering process, and exhausting the air in the air purifying chamber outwards by the air exhaust mechanism. Because the upper end of the movable filter bag is connected with a lifting mechanism, the exhaust mechanism can drive the movable filter bag to lift through the lifting mechanism, so that the movable filter bag can lift in a reciprocating manner in the outward exhaust process, the movable filter bag and the fixed filter bag can move relatively, the upper part of the movable filter bag is provided with an upper scraper blade in contact with the fixed filter bag, and the lower part of the fixed filter bag is provided with a lower scraper blade in contact with the movable filter bag, so that dust adhered to the outer wall of the fixed filter bag can be scraped by the upper scraper blade when the movable filter bag lifts, and the dust on the outer wall of the movable filter bag can be scraped by the lower scraper blade, thereby realizing the. Meanwhile, the rotating shaft is connected in the fixed filter bag in a rotating mode, the flexible leaves are arranged on the rotating shaft, the transmission mechanism is connected between the rotating shaft and the lifting mechanism, and the lifting mechanism can drive the rotating shaft to rotate through the transmission mechanism during action, so that the rotating shaft can be driven to rotate when the movable filter bag is lifted, the rotating shaft drives the flexible leaves to stir the interior of the fixed filter bag, the fixed filter bag is deformed and shaken, dust adhered to the surface of the fixed filter bag is shaken off, and the dust drops downwards into the dust hopper.

The ash bucket is communicated with the feeding mechanism, when the amount of the dust is more, the feeding mechanism is started, the feeding mechanism conveys the dust to the screening mechanism, and the screening mechanism screens and grades the dust.

The beneficial effect of this basic scheme lies in: according to the scheme, the guide plate is arranged in the cooling box, so that the smoke can only flow along the guide plate, the time of the smoke in the cooling box is prolonged, the smoke is thoroughly cooled, and meanwhile, the drying agent is arranged on the guide plate, so that the smoke can be dried by the drying agent when flowing, the smoke entering the filtering chamber is prevented from containing moisture, and dust containing the moisture is easy to block sieve holes in the filtering bag when contacting with the filtering bag, so that the dust removal efficiency is low; the fixed filter bag and the movable filter bag are arranged in the dust removing box, and the movable filter bag can be lifted in a reciprocating manner in the dust removing process, so that the upper scraper and the lower scraper can scrape dust on the fixed filter bag and the movable filter bag, the dust removing efficiency is high, and the effect is good; this scheme makes the dust that is collected can be screened by the screening classification through setting up screening mechanism, is favorable to the recycle in dust later stage.

Further, feeding mechanism includes the center pin and locates the epaxial helical blade of center pin, screening mechanism includes a sieve section of thick bamboo and screen cloth, sliding connection has the annular slab in a sieve section of thick bamboo, the screen cloth is connected on the annular slab, be connected with the spring between annular slab downside and the sieve section of thick bamboo, the part that the center pin is located a sieve section of thick bamboo is equipped with the cam that can contact with the screen cloth, the reciprocal lift of screen cloth during the screening dust, thereby the screen cloth constitutes the shale shaker, make the more thin dust can be easier pass through the screen cloth, realize the screening of dust hierarchical.

Further, exhaust mechanism includes the power shaft and locates the epaxial flabellum of power, and elevating system includes the slider-crank mechanism who is connected with the power shaft, and the slider is followed vertical direction sliding connection on the indoor wall of clean air chamber, moves filter bag upper end fixedly connected with slide cartridge, and the slide cartridge is followed vertical direction sealing sliding connection on the baffle, slide cartridge and slider fixed connection. So set up, can drive the reciprocating lift of slide cartridge through slider-crank mechanism during airing exhaust to realize the reciprocating lift of filter bag.

Further, drive mechanism includes the screw rod of fixed connection in the pivot, fixedly connected with slide on the slide section of thick bamboo, set up on the slide with screw rod complex screw for can drive the reciprocal rotation of pivot when the slide reciprocates, make flexible leaf stir deciding the filter bag, decide the filter bag and take place the deformation shake, make the dust of deciding on the filter bag shaken off.

Further, be equipped with a plurality of first gasbags on the baffle, first gasbag upper portion is connected with the slide cartridge, all be equipped with the second gasbag in every moves the filter bag, the intercommunication has the connecting pipe between first gasbag and the second gasbag, the connecting pipe is the elastic hose, so set up, can form the extrusion to first gasbag when the slide cartridge descends, thereby make during the gaseous entering second gasbag in the first gasbag, the second gasbag inflation is to moving the filter bag extrusion and making the dust on the filter bag tremble off, the second gasbag forms the support to moving the filter bag simultaneously, it is better to make the filter bag go up the ash scraping effect of scraper blade and lower scraper blade when the motion.

Drawings

FIG. 1 is a cross-sectional view of one embodiment of a dust recovery system of the present invention;

fig. 2 is an enlarged view at a in fig. 1.

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

description of reference numerals: the device comprises a cooling box 1, an induced draft fan 2, a guide plate 3, a dust removal box 4, an exhaust mechanism 5, a sliding plate 6, a first air bag 7, a sliding barrel 8, a partition plate 9, a second air bag 10, a baffle plate 11, an ash bucket 12, a fixed filter bag 13, a flexible blade 14, a rotating shaft 15, a screw 16, a feeding barrel 17, a screening barrel 18, a spiral blade 19, a cam 20, a push rod 21, a screen 22, an annular plate 23, a spring 24, corrugated cloth 25, a movable filter bag 26, an upper scraper 27 and a lower scraper 28.

As shown in fig. 1 and 2, a dust recycling system includes a temperature reduction unit, a dust removal unit, and a recycling unit. The cooling unit comprises a cooling box 1, and a cooling mechanism used for cooling the flue gas is arranged in the cooling box 1. The left side wall of the lower part of the cooling box 1 is provided with a draught fan 2 communicated with the interior of the cooling box 1, the left inner wall and the right inner wall of the cooling box 1 are alternately provided with guide plates 3, and the guide plates 3 are provided with drying agents. The right side wall at the top of the cooling box 1 is communicated with an air outlet pipe.

The dust removal unit comprises a dust removal box 4, a partition plate 9 is fixedly connected in the dust removal box 4, the partition plate 9 divides the interior of the dust removal box 4 into an upper space and a lower space, a gas purification chamber is arranged above the partition plate 9, and a filter chamber is arranged below the partition plate 9. The left side wall of the filtering chamber is provided with an air inlet which is communicated with the air outlet pipe, the right side wall of the air purifying chamber is provided with an air outlet, the air outlet is provided with an air exhaust mechanism 5, the air exhaust mechanism 5 comprises a power shaft and fan blades arranged on the power shaft, and the central shaft is connected with a power source. The lower end of the filtering chamber is communicated with an ash bucket 12, the ash bucket 12 is provided with a shaking motor, and the right side of the air inlet in the filtering chamber is fixedly connected with a baffle 11.

Be equipped with filtration system in the filter chamber, filtration system is located baffle 11 right-hand, and filtration system includes a plurality of filter bags and fixed frame, and fixed frame fixed connection has seted up a plurality of through-holes on baffle 9 on the lower surface of baffle 9, and each through-hole that the opening of a plurality of filter bags passed on baffle 9 respectively is located baffle 9 top, and the export of filter bag is located the clean air chamber promptly. The filter bags are divided into a movable filter bag 26 and a fixed filter bag 13, the fixed filter bag 13 is fixedly connected to the fixed frame, and the movable filter bag 26 and the fixed filter bag 13 are arranged in a staggered mode. The upper end of the movable filter bag 26 is fixedly connected with a sliding cylinder 8, the sliding cylinder 8 is a cylinder with two open ends, the sliding cylinder 8 is connected in the through hole in a sealing and sliding mode, and the inside of the sliding cylinder 8 is in a Venturi tube shape. The left end of power shaft is equipped with slider-crank mechanism, and the slider is along vertical direction sliding connection on the right side wall of air-purifying chamber, and fixed connection has the slide 6 that the level set up on the slider, and the left end of slide 6 is along vertical direction sliding connection on the left side wall of air-purifying chamber, and the equal fixed connection in upper end of a plurality of smooth sections of thick bamboo 8 is on slide 6. The upper scrapers 27 are arranged on two sides of the upper end of the movable filter bag 26, the upper scrapers 27 on the two sides are respectively contacted with the side walls of the fixed filter bags 13 on the two sides, the lower scrapers 28 are respectively arranged on the left side and the right side of the lower end of the fixed filter bag 13, and the lower scrapers 28 on the two sides are respectively contacted with the movable filter bags 26 on the two sides. Fixedly connected with branch on the through-hole that is connected with fixed filter bag 13, the branch middle part is rotated and is connected with pivot 15, and the upper end fixedly connected with screw rod 16 of pivot 15, slide 6 are located the position department directly over screw rod 16 and offered the screw with screw rod 16 complex, and the screw thread is not auto-lock between screw hole and the screw rod 16, and pivot 15 is located fixed filter bag 13, and a plurality of flexible leaves 14 of fixedly connected with on the pivot 15. Be equipped with three first gasbag 7 on the baffle 9, first gasbag 7 upper portion is connected with slide 6, all is equipped with second gasbag 10 in every moves filter bag 26, and the intercommunication has the connecting pipe between first gasbag 7 and the second gasbag 10, and the connecting pipe is the elastic hose.

The recovery unit comprises a spiral feeding mechanism, the spiral feeding mechanism comprises a feeding barrel 17, a central shaft and a spiral blade 19 arranged on the central shaft, the left end of the central shaft is rotatably connected to the left side wall of the feeding barrel 17, the left end of the central shaft is connected with an output shaft of an external motor, a feeding hole is formed in the upper surface of the left part of the feeding barrel 17, a material pipe is connected between the feeding hole and the lower end of the ash hopper 12, and a material door is arranged on the material pipe. A pay-off section of thick bamboo 17 right-hand member is equipped with screening section of thick bamboo 18, a pay-off section of thick bamboo 17 right-hand member and the left side intercommunication of screening section of thick bamboo 18, the center pin right-hand member rotates to be connected on the right side wall of screening section of thick bamboo 18, the right-hand member of center pin is equipped with cam 20, all be equipped with the spout on the inner wall about screening section of thick bamboo 18, sliding connection has annular plate 23 between two spouts, the lateral wall and the 18 inner wall laminating of screening section of thick bamboo of annular plate 23, be equipped with screen cloth 22 in the annular plate 23, screen cloth 22 can be through thinner dust and the thicker dust of separation, be connected with spring 24 between annular plate 23 and the spout bottom, be equipped with corrugated cloth 25 on the lower surface of annular plate 23, corrugated cloth 25 covers the spout, corrugated cloth 25 lower extreme fixed connection just is located.

During the use, inhale cooling box 1 with the dusty flue gas of high temperature through draught fan 2, cooling mechanism cools off the flue gas, and the flue gas flows along the passageway that guide plate 3 formed, because be equipped with the drier on the guide plate 3, so when the flue gas flows along guide plate 3, contains steam in the drier can absorb the flue gas, makes the flue gas of discharging in the cooling box 1 be the low temperature drying.

The filtering chamber is communicated with the cooling box 1, so that the flue gas dried at low temperature can flow into the filtering chamber from the cooling box 1, a part of coarse dust particles fall into the dust hopper 12 due to inertial collision, natural sedimentation and other reasons, and most of fine dust particles rise along with the airflow. After the flue gas is filtered by the movable filter bag 26 and the fixed filter bag 13, dust particles are blocked at the outer sides of the movable filter bag 26 and the fixed filter bag 13, and the purified gas can pass through the side walls of the movable filter bag 26 and the fixed filter bag 13, enter the movable filter bag 26 and the fixed filter bag 13, flow upwards into the gas purifying chamber and then are discharged. And starting the air exhaust mechanism 5 in the filtering process, and exhausting the air in the clean air chamber outwards by the air exhaust mechanism 5. The central shaft of the exhaust mechanism 5 rotates to drive the slider-crank mechanism to move, so that the slider-crank mechanism drives the sliding plate 6 to reciprocate, then the sliding plate 6 drives the sliding cylinder 8 and the movable filter bag 26 to reciprocate, the upper scraper 27 can scrape dust adhered to the outer wall of the fixed filter bag 13 when the movable filter bag 26 ascends and descends, the lower scraper 28 can scrape dust on the outer wall of the movable filter bag 26, and the movable filter bag 26 and the fixed filter bag 13 are cleaned. The sliding plate 6 goes up and down to drive the rotating shaft 15 to rotate through the screw rod 16 and the screw hole, the rotating shaft 15 drives the flexible leaf 14 to stir the inside of the fixed filter bag 13, so that the fixed filter bag 13 deforms and shakes, dust adhered to the surface of the fixed filter bag 13 is shaken off, and the dust falls downwards into the dust hopper 12. In the ash removal process, the sliding plate 6 descends to extrude the first air bag 7, air in the first air bag 7 enters the second air bag 10, the second air bag 10 expands to support the movable filter bag 26, the movable filter bag 26 cannot deform in the lifting process, and therefore the upper scraper 27 and the lower scraper 28 can have a better ash scraping effect.

When the amount of the dust is large, the material door is opened, the dust in the dust hopper 12 is discharged into the feeding barrel 17, the central shaft is driven to rotate by the starting motor, the central shaft conveys the dust to the right through the helical blades 19, and the dust drops on the screen 22. The central shaft rotates to drive the cam 20 to rotate, the cam 20 rotates to intermittently press the push rod 21 downwards, and the screen 22 is made to reciprocate, so that the fine dust on the screen 22 is filtered, the coarse dust is left on the screen 22, and the dust is screened and classified.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A dust recovery system characterized by: the device comprises a cooling unit, a dust removal unit and a recovery unit, wherein the cooling unit comprises a cooling box and a cooling mechanism arranged in the cooling box, a plurality of guide plates are alternately arranged on the left and the right in the cooling box, drying agents are arranged on the guide plates, the dust removal unit comprises a dust removal box, a partition plate is arranged in the dust removal box and divides the upper part and the lower part of the dust removal box into a clean air chamber and a filter chamber, the filter chamber is communicated with the cooling box, a dust hopper is arranged at the lower end of the filter chamber, a plurality of fixed filter bags and movable filter bags are alternately arranged in the filter chamber, openings of the fixed filter bags and the movable filter bags are both positioned in the clean air chamber, an exhaust mechanism is arranged in the clean air chamber, an elevating mechanism is connected at the upper end of the movable filter bag and is connected with the exhaust mechanism, the exhaust mechanism can drive the movable filter, the rotary shaft is connected in the fixed filter bag in a rotating mode, the rotary shaft is provided with a flexible blade, a transmission mechanism is connected between the rotary shaft and the lifting mechanism, the lifting mechanism can drive the rotary shaft to rotate through the transmission mechanism when acting, the recovery unit comprises a feeding mechanism for conveying dust and a screening mechanism for screening and grading the dust, the feeding mechanism is communicated with the ash bucket, and the screening mechanism is communicated with the feeding mechanism and is positioned at one end, far away from the ash bucket, of the feeding mechanism; the upper end of the movable filter bag is fixedly connected with a sliding cylinder, the sliding cylinder is connected to the partition plate in a sealing and sliding manner along the vertical direction, and a sliding plate is fixedly connected to the sliding cylinder; the baffle is provided with a plurality of first air bags, the upper parts of the first air bags are connected with the sliding barrel, each movable filter bag is internally provided with a second air bag, a connecting pipe is communicated between the first air bags and the second air bags, and the connecting pipes are elastic hoses.

2. A dust recycling system according to claim 1, wherein: the feeding mechanism comprises a central shaft and a helical blade arranged on the central shaft, the screening mechanism comprises a screen cylinder and a screen, an annular plate is connected in the screen cylinder in a sliding mode, the screen is connected to the annular plate, a spring is connected between the lower side of the annular plate and the screen cylinder, and a cam which can be in contact with the screen is arranged on the part, located in the screen cylinder, of the central shaft.

3. A dust recycling system according to claim 2, wherein: the exhaust mechanism comprises a power shaft and fan blades arranged on the power shaft, the lifting mechanism comprises a slider-crank mechanism connected with the power shaft, a slider is connected to the inner wall of the air purification chamber in a sliding mode along the vertical direction, and a sliding cylinder is fixedly connected with the slider.

4. A dust recycling system according to claim 3, wherein: the transmission mechanism comprises a screw rod fixedly connected to the rotating shaft, and a screw hole matched with the screw rod is formed in the sliding plate.