CN210801229U

CN210801229U - Ash removal and pre-dust removal device for SCR denitration system

Info

Publication number: CN210801229U
Application number: CN201921730149.XU
Authority: CN
Inventors: 王连宝
Original assignee: Jilin Qinglang Environmental Technology Co Ltd
Current assignee: Suzhou Langjing Environmental Technology Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-19
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a dust collector is in advance removed to deashing for SCR deNOx systems, concretely relates to dust collector technical field, comprising a boiler, the play dirt mouth one side fixed mounting of boiler has the pretreatment case, one side fixed mounting that the boiler was kept away from to the pretreatment case has the SCR reactor, the bottom fixed mounting of pretreatment case has the miscellaneous case of receipts, the boiler communicates each other with pretreatment case, pretreatment case and SCR reactor and pretreatment case and receipts miscellaneous case respectively. The utility model discloses a set up and wash the mechanism, rotate the take-up pulley, the first sliding block of stay cord pulling slides from top to bottom along the spout, opens high pressure nozzle, and shower nozzle blowout high-pressure rivers wash the filter screen, and the impurity dust mixture of rushing out falls into to the miscellaneous case of receiving, compares with prior art, has improved the clearance effect to the filter screen greatly, avoids dust impurity to block up the progress of filter screen mesh.

Description

Ash removal and pre-dust removal device for SCR denitration system

Technical Field

The utility model relates to a dust collector technical field, more specifically say, the utility model relates to a dust collector is in advance removed to deashing for SCR deNOx systems.

Background

In order to prevent the environment from being polluted by excessive NOx generated after coal is combusted in a boiler, the coal is subjected to denitration treatment, and in the existing SCR denitration system, because raw flue gas does not undergo dust removal and directly enters an SCR reactor, large-particle dust in the flue gas is accumulated on a catalyst in a large amount, the catalyst is poisoned, and the service life of the catalyst is obviously shortened.

The utility model discloses a utility model patent of patent grant publication No. CN 203469703U, which discloses a deashing and pre-dedusting device for an SCR denitration system, comprising a flue with a rectangular cross section, an ash filter, a vibration exciter, a pressure difference monitor, an ash hopper and a bin type pneumatic conveying pump; the ash filter is transversely arranged in the flue in an inclined mode, the vibration exciter and the pressure difference monitor are located above the outer wall of the flue, the vibration exciter is connected with the ash filter through the vibrating arm, the ash bucket is connected to the lower portion of the flue, and the bin type pneumatic conveying pump is connected to the lower end of the ash bucket. The utility model discloses the large granule dust in the former flue gas of ash filter interception, through the pressure differential of pressure differential monitor monitoring ash filter front and back side, the vibration through the vibration exciter drives the filter screen vibration and shakes the adnexed deposition on it and fall, and the deposition that shakes and falls into the ash bucket of flue below, at last through storehouse formula air conveying pump sending to ash storehouse. The whole process is automatically finished on line through control of the control center without manual operation. The automatic feeding device has the advantages of improving the working environment, improving the working efficiency and saving the labor cost.

However, when the dust removing device is actually used, the main problems are that when the filter screen is vibrated for dust removal, if the smoke dust is a substance with strong adhesion, the filter screen cannot be completely cleaned, and the dust removal effect is poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defect of prior art, the embodiment of the utility model provides a dust collector in advance of deashing for SCR deNOx systems washes the mechanism through setting up, has improved the clearance effect to the filter screen greatly, avoids dust impurity to block up the mesh of filter screen to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the ash-removing and pre-dedusting device for the SCR denitration system comprises a boiler, wherein a pretreatment box is fixedly installed on one side of a dust outlet of the boiler, an SCR reactor is fixedly installed on one side, away from the boiler, of the pretreatment box, a trash collecting box is fixedly installed at the bottom of the pretreatment box, and the boiler, the pretreatment box, the SCR reactor, the pretreatment box and the trash collecting box are respectively communicated with one another;

the device comprises a pretreatment box, and is characterized in that a filtering mechanism is arranged between the top and the bottom of an inner cavity of the pretreatment box, the filtering mechanism comprises a fixed frame, the fixed frame is fixedly embedded between the inner walls of the pretreatment box, the fixed frame is obliquely arranged inside the pretreatment box, the fixed frame is of a square-shaped structure, a filter screen is fixedly arranged inside the fixed frame, a washing mechanism is arranged at the top of the fixed frame, the washing mechanism comprises a first sliding block, the first sliding block is vertically arranged on the top surface of the fixed frame, a water storage box is fixedly arranged at the top of the first sliding block, one side, far away from the water storage box, of the first sliding block is fixedly provided with a high-pressure spray head in a penetrating manner, the number of the high-pressure spray heads is multiple, the high-pressure spray heads;

one side of the fixing frame, which is far away from the washing mechanism, is provided with a brushing and wiping mechanism, the brushing and wiping mechanism comprises a second sliding block, a cleaning roller is movably arranged between two sides of the bottom of the second sliding block, and the brushing end of the cleaning roller is in extrusion contact with the surface of the filter screen.

In a preferred embodiment, the both sides that filtering mechanism top and bottom are close to the filter screen have all seted up the spout, one side fixed mounting that first sliding block is close to fixed frame has first pulley, one side fixed mounting that the second sliding block is close to fixed frame has the second pulley, just first pulley and second pulley all slide and locate in the spout.

In a preferred embodiment, a water inlet is formed in the top of the water storage tank in a penetrating mode, a water flow channel is formed in the bottom of an inner cavity of the water storage tank in a penetrating mode, and the high-pressure spray head is communicated with the water storage tank through the water flow channel.

In a preferred embodiment, a mounting frame is fixedly mounted on one side of the second sliding block, a motor is fixedly mounted inside the mounting frame, and an output shaft end of the motor is fixedly connected with the cleaning roller through a coupling.

In a preferred embodiment, a pulling rope is fixedly connected to each of the first sliding block and the second sliding block on the side close to the top of the pretreatment tank, and one end of the pulling rope far away from the inside of the pretreatment tank extends out of the top of the pretreatment tank.

In a preferred embodiment, two sets of fixed pulleys are fixedly mounted on the top of the pretreatment tank, two pulling ropes are wound around the outer peripheral surfaces of the fixed pulleys respectively, a winding wheel is fixedly mounted on the top of the pretreatment tank, and rope ends of the two sets of pulling ropes are fixedly wound on the winding wheel.

In a preferred embodiment, a through hole is formed in the position, opposite to the joint of the top of the fixing frame, of the top of the pretreatment tank in a penetrating mode, and a hole plug is arranged in the through hole in a plugging mode.

In a preferred embodiment, a cleaning door is movably arranged on one side surface of the impurity collecting box through a hinge.

The utility model discloses a technological effect and advantage:

1. through arranging the flushing mechanism, rotating the winding wheel, pulling the first sliding block to slide up and down along the sliding chute by the pull rope, starting the high-pressure nozzle, spraying high-pressure water flow from the nozzle to flush the filter screen, and enabling flushed impurity and dust mixtures to fall into the impurity collecting box, compared with the prior art, the cleaning effect on the filter screen is greatly improved, and the filter screen mesh is prevented from being blocked by dust and impurities;

2. through setting up the brush and wiping the mechanism, open the motor, the motor drives the cleaning roller and rotates, and the cleaning roller rotates for the brush hair brush wipes the bottom surface of filter screen, will glue the impurity that covers not washed in the bottom surface of filter screen and brush, further improves the clearance effect to the filter screen, through rotating the take-up pulley, makes the second slider slide from top to bottom in the spout of fixed frame bottom, compares with prior art, has the increase brush to wipe the scope, has improved the progress of cleaning efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a top view of the filtering mechanism of the present invention.

Fig. 3 is a schematic structural view of the flushing mechanism of the present invention.

Fig. 4 is a front sectional view of fig. 3 according to the present invention.

Fig. 5 is a front view of the brushing mechanism of the present invention.

The reference signs are: the device comprises a boiler 1, a pretreatment tank 2, a through hole 21, an SCR reactor 3, a filtering mechanism 4, a fixing frame 41, a filtering screen 42, a sliding chute 43, a sundries collecting tank 5, a cleaning door 51, a flushing mechanism 6, a first sliding block 61, a water storage tank 62, a water inlet 621, a water flow channel 622, a first pulley 63, a high-pressure spray head 64, a brushing mechanism 7, a second sliding block 71, a cleaning roller 72, a second pulley 73, a motor 74, a mounting frame 75, a winding wheel 8, a pull rope 81 and a fixed pulley 82.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-5, the ash-removing and pre-dedusting device for the SCR denitration system comprises a boiler 1, a pretreatment tank 2 is fixedly installed on one side of a dust outlet of the boiler 1, an SCR reactor 3 is fixedly installed on one side of the pretreatment tank 2 away from the boiler 1, a impurity collecting tank 5 is fixedly installed at the bottom of the pretreatment tank 2, and the boiler 1 and the pretreatment tank 2, the pretreatment tank 2 and the SCR reactor 3, and the pretreatment tank 2 and the impurity collecting tank 5 are respectively communicated with each other;

a filtering mechanism 4 is arranged between the top and the bottom of the inner cavity of the pretreatment tank 2, the filtering mechanism 4 comprises a fixed frame 41, the fixed frame 41 is fixedly embedded between the inner walls of the pretreatment tank 2, and the fixing frame 41 is obliquely arranged inside the pretreatment tank 2, the fixing frame 41 has a square-shaped structure, a filter screen 42 is fixedly arranged inside the fixed frame 41, the top of the fixed frame 41 is provided with a washing mechanism 6, the flushing mechanism 6 comprises a first sliding block 61, the first sliding block 61 is arranged perpendicular to the top surface of the fixed frame 41, the top of the first sliding block 61 is fixedly provided with a water storage tank 62, one side of the first sliding block 61 far away from the water storage tank 62 is fixedly provided with a high-pressure spray head 64 in a penetrating way, the number of the high-pressure spray heads 64 is multiple, the high-pressure spray heads 64 are uniformly distributed, and the high-pressure spray heads 64 are positioned right above the filter screen 42;

a brushing mechanism 7 is arranged on one side of the fixing frame 41, which is far away from the washing mechanism 6, the brushing mechanism 7 comprises a second sliding block 71, a cleaning roller 72 is movably arranged between two sides of the bottom of the second sliding block 71, and the brushing end of the cleaning roller 72 is in extrusion contact with the surface of the filter screen 42;

the sliding grooves 43 are formed in the two sides of the top and the bottom of the filtering mechanism 4 close to the filtering net 42, the first sliding block 61 is fixedly provided with the first pulley 63 at one side close to the fixed frame 41, the second sliding block 71 is fixedly provided with the second pulley 73 at one side close to the fixed frame 41, and the first pulley 63 and the second pulley 73 are both arranged in the sliding grooves 43 in a sliding manner, so that the friction force between the pulleys and the sliding grooves 43 is reduced, and the service life of the pull rope 81 is prolonged;

the top of the water storage tank 62 is provided with a water inlet 621 in a penetrating manner, the bottom of the inner cavity of the water storage tank 62 is provided with a water flow channel 622 in a penetrating manner, and the high-pressure spray head 64 is communicated with the water storage tank 62 through the water flow channel 622, so that a worker can conveniently add water into the water storage tank 62;

a mounting frame 75 is fixedly mounted on one side of the second sliding block 71, a motor 74 is fixedly mounted inside the mounting frame 75, and an output shaft end of the motor 74 is fixedly connected with the cleaning roller 72 through a coupler to provide power support for the brushing mechanism 7;

one sides of the first sliding block 61 and the second sliding block 71, which are close to the top of the pretreatment tank 2, are both fixedly connected with pull ropes 81, and one ends of the pull ropes 81, which are far away from the inside 2 of the pretreatment tank, extend out of the top of the pretreatment tank 2;

the top of the pretreatment box 2 is fixedly provided with two groups of fixed pulleys 82, two pull ropes 81 are wound on the outer peripheral surfaces of the fixed pulleys 82 respectively, the top of the pretreatment box 2 is fixedly provided with a winding wheel 8, and the rope ends of the two groups of pull ropes 81 are fixedly wound on the winding wheel 8, so that the cleaning range of the washing mechanism 6 and the brushing mechanism 7 on the filter screen 42 is conveniently expanded, and the practicability of the device is improved;

the top of the pretreatment tank 2 is just penetrated through the position of the joint of the top of the fixing frame 41 and is provided with a through hole 21, and a hole plug is arranged in the through hole 21, so that a worker can add water into the water storage tank 62 conveniently.

The implementation mode is specifically as follows: when the device is used, smoke waste gas generated by the boiler 1 enters the pretreatment tank 2 from a dust outlet, is filtered and blocked by the filtering mechanism 4, the smoke gas subjected to pre-dedusting enters the SCR reactor 3 for denitration treatment, the washing mechanism 6 is arranged, when the filtering mechanism is used for a period of time and needs to be cleaned, the winding wheel 8 is rotated, the stay cord 81 pulls the first sliding block 61 to slide upwards to a position close to the top of the pretreatment tank 2, water is added into the water storage tank 62, the winding wheel 8 is rotated reversely, the first sliding block 61 slides under the action of gravity, the high-pressure spray head 64 is opened, the spray head sprays high-pressure water flow to wash the filter screen 42, the washed impurity and dust mixture falls into the impurity collecting tank 5, the cleaning mode of the filter screen 42 is washed by the high-pressure water flow, the cleaning effect of the filter screen 42 is greatly improved, and the dust impurities are prevented from blocking meshes of the filter screen 42, the device has the advantages that the device can filter smoke dust, the brushing mechanism 7 is arranged, the motor 74 is started, the motor 74 drives the cleaning roller 72 to rotate, the cleaning roller 72 rotates, so that the bristles brush the bottom surface of the filter screen 42, impurities which are adhered to the bottom surface of the filter screen 42 and are not washed away are brushed away, the cleaning effect on the filter screen 42 is further improved, in addition, when the brushing mechanism 7 is started, the pull rope 81 drives the second sliding block 71 to slide by rotating the winding wheel 8, the brushing area is increased, the cleaning efficiency is favorably improved, the sliding friction force of the pulley in the sliding groove 43 is reduced by arranging the sliding groove 43, the first pulley 63 and the second pulley 73, the tension of the pull rope 81 is favorably reduced, the pull rope 81 is prevented from being broken, the service life of the pull rope 81 is prolonged, through arranging the water inlet 621, a worker can conveniently add water into the water storage tank 62, through arranging the motor 74 and the mounting frame 75, for brush mechanism 7 provides power support, through setting up reel 8, stay cord 81 and fixed pulley 82, fixed pulley 82 conveniently changes the direction of stay cord 81 for stay cord 81 and reel 8 fixed connection rotate reel 8 and can control washing mechanism 6 and brush mechanism 7 and clear up the work to filter screen 42, have enlarged the clearance scope, have improved the practicality of device.

As shown in fig. 1, a cleaning door 51 is movably mounted on one side surface of the impurity collecting box 5 through a hinge.

The implementation mode is specifically as follows: after the work of clearing up filter screen 42 is accomplished, the mixture of dust and water flows into in receiving miscellaneous case 5, and the staff has made things convenient for the staff to clear up the dust pollutant greatly through opening clearance door 51, has alleviateed staff's work burden.

The utility model discloses the theory of operation:

referring to the attached drawings 1-5 of the specification, when cleaning the filtering mechanism, the winding wheel 8 is rotated, the pull rope 81 pulls the first sliding block 61 to slide up and down along the chute 43, the high-pressure spray nozzle 64 is opened, the high-pressure water flow sprayed by the spray nozzle washes the filter screen 42, the washed impurity and dust mixture falls into the impurity collecting box 5, the cleaning mode of washing the filter screen 42 by the high-pressure water flow greatly improves the cleaning effect on the filter screen 42 and prevents the dust and impurities from blocking the meshes of the filter screen 42, the motor 74 is then started, the motor 74 drives the cleaning roller 72 to rotate, the cleaning roller 72 rotates, so that the brush bristles brush the bottom surface of the filter screen 42 and brush the impurities which are adhered to the bottom surface of the filter screen 42 and are not washed away, the cleaning effect on the filter screen 42 is further improved, the second sliding block 71 slides up and down in the chute 43 at the bottom of the fixed frame 41 by, the brushing range is enlarged, and the cleaning efficiency is improved;

furthermore, by opening the cleaning door 51, dust and pollutants can be cleaned, and the labor burden of workers is greatly reduced.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a deashing dust collector in advance for SCR deNOx systems, includes boiler (1), its characterized in that: a pretreatment box (2) is fixedly installed on one side of a dust outlet of the boiler (1), an SCR reactor (3) is fixedly installed on one side, far away from the boiler (1), of the pretreatment box (2), a impurity collecting box (5) is fixedly installed at the bottom of the pretreatment box (2), and the boiler (1) and the pretreatment box (2), the pretreatment box (2) and the SCR reactor (3) as well as the pretreatment box (2) and the impurity collecting box (5) are respectively communicated with each other;

be equipped with filtering mechanism (4) between the inner chamber top of preliminary treatment case (2) and the bottom, filtering mechanism (4) are including fixed frame (41), fixed frame (41) are fixed to be inlayed between the inner wall of preliminary treatment case (2), just fixed frame (41) slope sets up in the inside of preliminary treatment case (2), fixed frame (41) are back the shape structure, the inside fixed mounting of fixed frame (41) has filter screen (42), the top of fixed frame (41) is equipped with washes mechanism (6), it includes first sliding block (61) to wash mechanism (6), first sliding block (61) sets up with the top surface of fixed frame (41) is perpendicular, the top fixed mounting of first sliding block (61) has water storage box (62), one side fixed through-mounting that water storage box (62) was kept away from to first sliding block (61) has high pressure nozzle (64), the number of the high-pressure spray heads (64) is multiple, the high-pressure spray heads (64) are uniformly distributed, and the high-pressure spray heads (64) are positioned right above the filter screen (42);

one side of the fixed frame (41) far away from the washing mechanism (6) is provided with a brushing and wiping mechanism (7), the brushing and wiping mechanism (7) comprises a second sliding block (71), a cleaning roller (72) is movably mounted between two sides of the bottom of the second sliding block (71), and the brushing end of the cleaning roller (72) is in extrusion contact with the surface of the filter screen (42).

2. The ash removal and pre-dust removal device for the SCR denitration system according to claim 1, wherein: sliding groove (43) have all been seted up to the both sides that filtering mechanism (4) top and bottom are close to filter screen (42), one side fixed mounting that first sliding block (61) are close to fixed frame (41) has first pulley (63), one side fixed mounting that second sliding block (71) are close to fixed frame (41) has second pulley (73), just first pulley (63) and second pulley (73) all slide and locate in sliding groove (43).

3. The ash removal and pre-dust removal device for the SCR denitration system according to claim 1, wherein: the top of water storage box (62) is run through and is seted up water inlet (621), the inner chamber bottom of water storage box (62) is run through and is seted up rivers passageway (622), high pressure nozzle (64) are through rivers passageway (622) and water storage box (62) intercommunication.

4. The ash removal and pre-dust removal device for the SCR denitration system according to claim 1, wherein: one side fixed mounting of second sliding block (71) has installing frame (75), the inside fixed mounting of installing frame (75) has motor (74), the output axle head and cleaning roller (72) of motor (74) pass through shaft coupling fixed connection.

5. The ash removal and pre-dust removal device for the SCR denitration system according to claim 1, wherein: first sliding block (61) and second sliding block (71) are close to equal fixedly connected with stay cord (81) in one side at preliminary treatment case (2) top, just stay cord (81) are kept away from one end in preliminary treatment case (2) and are extended outside the top of preliminary treatment case (2).

6. The ash removal and pre-dust removal device for the SCR denitration system according to claim 5, wherein: the top fixed mounting of preliminary treatment case (2) has two sets of fixed pulleys (82), two stay cord (81) are respectively on the outer peripheral face of locating fixed pulley (82), the top fixed mounting of preliminary treatment case (2) has take-up pulley (8), and is two sets of the rope end of stay cord (81) is all fixed around locating on take-up pulley (8).

7. The ash removal and pre-dust removal device for the SCR denitration system according to claim 1, wherein: the top of the pretreatment box (2) is opposite to the position of the joint of the top of the fixing frame (41) and is provided with a through hole (21) in a penetrating way, and a hole plug is arranged in the through hole (21) in a plugging way.

8. The ash removal and pre-dust removal device for the SCR denitration system according to claim 1, wherein: a cleaning door (51) is movably arranged on the surface of one side of the impurity collecting box (5) through a hinge.