CN215782714U

CN215782714U - Lime pit SCR denitrification facility

Info

Publication number: CN215782714U
Application number: CN202122167541.1U
Authority: CN
Inventors: 杨琨; 陈�光
Original assignee: Nanjing Southeast University Energy Engineering Design Institute Co ltd
Current assignee: Nanjing Southeast University Energy Engineering Design Institute Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-02-11
Anticipated expiration: 2031-09-08

Abstract

The utility model discloses a lime pit SCR (Selective catalytic reduction) denitration device, which belongs to the technical field of SCR denitration devices and comprises an SCR denitration device body, wherein an air inlet pipe is communicated with the top end of the SCR denitration device body, a connecting pipe is communicated with one side of the air inlet pipe, an auxiliary mechanism matched with the connecting pipe for use is arranged on the air inlet pipe, and a dust collecting mechanism matched with the auxiliary mechanism for use is arranged at the lower end of one side of the air inlet pipe; the dust collecting mechanism comprises a fixed plate, the fixed plate is fixedly connected with the air inlet pipe, and a first through hole communicated with the air inlet pipe is formed in the fixed plate in a penetrating mode. The filter plate will be passed during leading-in operation of flue gas, and the particulate impurity that contains in the flue gas this moment will adhere to the lower surface at the filter plate, and under the drive of side gear, first gear will rotate along with it is synchronous to drive the scraper blade through first bull stick and rotate, and then can get rid of impurity such as the adnexed dust of filter plate lower surface, avoid appearing the phenomenon that the filter plate blockked up, and then ensured the normal development of flue gas denitration operation.

Description

Lime pit SCR denitrification facility

Technical Field

The utility model relates to the technical field of SCR (selective catalytic reduction) denitration devices, in particular to a lime pit SCR denitration device.

Background

SCR denitration is a selective catalytic reduction flue gas denitration process, the SCR denitration technology is flue gas which currently occupies the mainstream, and the Selective Catalytic Reduction (SCR) denitration technology has the advantages of high efficiency, good selectivity, stable and reliable operation and the like.

The SCR denitrification facility that present lime cellar used still has certain not enough, does not set up the scraping device who uses with the filter plate cooperation if among the current SCR denitrification facility to the phenomenon of filter plate jam easily appears, and then the normal development of unable guarantee flue gas denitration operation, in addition, current SCR denitrification facility can't realize gathering dirt operation and clearing up the synchronous development of operation when using, and the practicality is lower, for this we propose a lime cellar SCR denitrification facility and be used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lime pit SCR denitration device to solve the problems in the background technology.

In order to solve the technical problems, the utility model adopts the following technical scheme: a lime pit SCR denitration device comprises an SCR denitration device body, wherein an air inlet pipe is communicated with the top end of the SCR denitration device body, a connecting pipe is communicated with one side of the air inlet pipe, an auxiliary mechanism matched with the connecting pipe for use is arranged on the air inlet pipe, and a dust collecting mechanism matched with the auxiliary mechanism for use is arranged at the lower end of one side of the air inlet pipe;

the dust collecting mechanism comprises a fixed plate, the fixed plate is fixedly connected with an air inlet pipe, a first through hole communicated with the air inlet pipe is formed in the fixed plate in a penetrating mode, a telescopic rod is inserted on the fixed plate in a rotating mode, a sleeve is arranged at one end of the telescopic rod, a spring is fixedly connected to the inner side of the sleeve, a spring movable sleeve is arranged on the outer side of the telescopic rod in a sleeved mode, one end of the spring is connected with the fixed plate in a rotating mode, the bottom end of the sleeve is provided with positioning rods symmetrically arranged, two groups of positioning holes matched for use are formed in the fixed plate, the positioning rods can be inserted into the positioning holes in a sliding mode, the bottom end of the telescopic rod is provided with a rotating plate, two groups of second through holes are formed in the rotating plate in a penetrating mode, and two groups of dust collecting boxes are arranged at the bottom end of the rotating plate in a detachable mode.

Preferably, the complementary unit includes motor and filter plate, motor fixed mounting is on the connecting pipe, and the output of motor runs through the intake pipe and is equipped with the side gear at its end, filter plate fixed mounting is in the inner chamber of intake pipe, and rotates on the filter plate and insert and be equipped with first bull stick, the top of first bull stick is equipped with first gear, and first gear meshes with the side gear mutually, the bottom of first bull stick is equipped with the scraper blade that the symmetry set up, one side of scraper blade contacts with the bottom of filter plate.

Preferably, the auxiliary mechanism further comprises a transverse plate, the transverse plate is fixedly installed in an inner cavity of the air inlet pipe, a second rotating rod is inserted into the transverse plate in a rotating mode, a second gear is arranged at the bottom end of the second rotating rod and meshed with the side gear, and fan blades distributed in an array mode are fixedly installed at the top end of the second rotating rod.

Preferably, a support member is fixedly sleeved on the outer side of the motor, and one end of the support member is fixedly connected with the connecting pipe.

Preferably, two groups of through holes are formed in one end of the dust collection box in a penetrating mode, fixing holes matched with the through holes are formed in the bottom end of the rotating plate, and bolts can be inserted into the through holes and the fixing holes in a threaded mode.

Compared with the prior art, the utility model has the beneficial effects that:

1. the filter plate will be passed during leading-in operation of flue gas, and the particulate impurity that contains in the flue gas this moment will adhere to the lower surface at the filter plate, and under the drive of side gear, first gear will rotate along with it is synchronous to drive the scraper blade through first bull stick and rotate, and then can get rid of impurity such as the adnexed dust of filter plate lower surface, avoid appearing the phenomenon that the filter plate blockked up, and then ensured the normal development of flue gas denitration operation.

2. The scraped dust and the like fall downwards along the inner cavity of the air inlet pipe, then sequentially pass through the first through hole and the second through hole and fall into the dust collection box for storage, when a proper amount of impurities such as dust and the like exist in the first group of dust collection box, a user can hold the sleeve and pull upwards to stretch the spring and the telescopic rod and separate the positioning rod from the positioning hole, then the user can rotate the sleeve, so that the rotating plate is driven to rotate by the telescopic rod, and then the two groups of dust collection boxes are driven to rotate, the sleeve is loosened until the other dust collection box rotates to be under the first through hole, at the moment, the spring is contracted to drive the sleeve to move downwards, so that the positioning rod can be inserted into the other corresponding positioning hole, the scraped dust and the like fall into the other dust collection box, and the first group of dust collection box can be taken down for cleaning, thereby realizing the synchronous development of dust collection operation and cleaning operation, the practicability is higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the intake pipe according to the present invention.

FIG. 3 is an enlarged structural view of the structure A in FIG. 2 according to the present invention.

Fig. 4 is an enlarged structural diagram of the structure at B in fig. 2 according to the present invention.

FIG. 5 is a schematic view of the dust collecting mechanism of the present invention.

Description of reference numerals: 1. an SCR denitration device body; 2. an air inlet pipe; 3. a connecting pipe; 4. an auxiliary mechanism; 41. a motor; 42. filtering the plate; 43. a side gear; 44. a first rotating lever; 45. a first gear; 46. a squeegee; 47. a transverse plate; 48. a second rotating rod; 49. a second gear; 410. a fan blade; 411. a support member; 5. a dust collecting mechanism; 51. fixing a plate; 52. a first through hole; 53. a telescopic rod; 54. a sleeve; 55. a spring; 56. positioning a rod; 57. positioning holes; 58. rotating the plate; 59. a second through hole; 510. a dust collection box; 511. perforating; 512. a fixing hole; 513. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as shown in fig. 1-5, the utility model provides a lime pit SCR denitration device, which comprises an SCR denitration device body 1, wherein the SCR denitration device body 1 can be used for denitration treatment of flue gas led out from a lime pit, which is the prior art and is not described herein in much detail, an air inlet pipe 2 is communicated with the top end of the SCR denitration device body 1, a connecting pipe 3 is communicated with one side of the air inlet pipe 2, an auxiliary mechanism 4 used in cooperation with the connecting pipe 3 is arranged on the air inlet pipe 2, and a dust collection mechanism 5 used in cooperation with the auxiliary mechanism 4 is arranged at the lower end of one side of the air inlet pipe 2;

the dust collecting mechanism 5 comprises a fixed plate 51, the fixed plate 51 is fixedly connected with the air inlet pipe 2, a first through hole 52 communicated with the air inlet pipe 2 is formed in the fixed plate 51 in a penetrating manner, an expansion link 53 is rotatably inserted in the fixed plate 51, a sleeve 54 is arranged at one end of the expansion link 53, a spring 55 is fixedly connected to the inner side of the sleeve 54, the spring 55 is movably sleeved on the outer side of the expansion link 53, one end of the spring 55 is rotatably connected with the fixed plate 51, positioning rods 56 are symmetrically arranged at the bottom end of the sleeve 54, two groups of positioning holes 57 matched with each other are formed in the fixed plate 51, the positioning rods 56 can be slidably inserted in the positioning holes 57, a rotating plate 58 is arranged at the bottom end of the expansion link 53, the contact surfaces of the rotating plate 58 and the fixed plate 51 are damping cushion plates, so that the sealing performance of the connection position can be ensured, two groups of second through holes 59 are formed in the rotating plate 58 in a penetrating manner, and the bottom of commentaries on classics board 58 can be dismantled and be equipped with two sets of dust bins 510, the one end of dust bin 510 is run through and is seted up two sets of perforation 511, and the bottom of commentaries on classics board 58 is seted up with perforation 511 cooperation fixed orifices 512 that uses, can the screw thread insert be equipped with bolt 513 in perforation 511 and the fixed orifices 512 to can fix dust bin 510 on commentaries on classics board 58, and be convenient for later stage take off its clearance fast.

Further, the auxiliary mechanism 4 includes a motor 41 and a filter plate 42, and in this scheme: the model Y80M1-2 is preferably selected as the motor 41, a power supply interface of the motor is connected with a power supply system through a switch, a running circuit of the motor 41 is a forward and reverse rotation control program of a conventional motor 41, the circuit runs as the conventional circuit, the circuit and the control related in the scheme are the prior art, and are not described herein, the motor 41 is fixedly installed on the connecting pipe 3, the supporting piece 411 is fixedly sleeved outside the motor 41, one end of the supporting piece 411 is fixedly connected with the connecting pipe 3, the installation stability of the motor 41 is effectively improved through the arrangement and use of the supporting piece 411, the output end of the motor 41 penetrates through the air inlet pipe 2 and is provided with a side gear 43 at the tail end thereof, the filter plate 42 is fixedly installed in the inner cavity of the air inlet pipe 2, the first rotating rod 44 is rotatably inserted on the filter plate 42, the top end of the first rotating rod 44 is provided with a first gear 45, and the first gear 45 is meshed with the side gear 43, the bottom of first bull stick 44 is equipped with the scraper blade 46 that the symmetry set up, one side of scraper blade 46 contacts with the bottom of filter plate 42 to can strike off the absorptive dust etc. in filter plate 42 bottom, avoid appearing the phenomenon that filter plate 42 blockked up, complementary unit 4 still includes diaphragm 47, diaphragm 47 fixed mounting is in the inner chamber of intake pipe 2, and rotates on diaphragm 47 and insert and be equipped with second bull stick 48, the bottom of second bull stick 48 is equipped with second gear 49, second gear 49 meshes with side gear 43 mutually, the top fixed mounting of second bull stick 48 has array distribution's flabellum 410, and the setting of flabellum 410 is used, can be fast with the leading-in SCR denitrification facility body 1 of the gas that gets into in the connecting pipe 3.

The working principle is as follows: a user needs to firstly communicate one end of the connecting pipe 3 with the lime pit, the motor 41 and the SCR denitration device body 1 can be opened when the SCR denitration device is used, at the moment, the motor 41 drives the second gear 49 to rotate through the side gear 43, so that the fan blade 410 is driven to rotate through the second rotating rod 48, smoke generated in the lime pit can be guided into the SCR denitration device body 1 through the connecting pipe 3 and the air inlet pipe 2, and is discharged after being subjected to denitration treatment by the SCR denitration device body 1;

the flue gas passes through the filter plate 42 during the flue gas introduction operation, at the moment, particulate impurities contained in the flue gas are attached to the lower surface of the filter plate 42, and the first gear 45 is driven by the side gear 43 to synchronously rotate along with the filter plate, so that the scraper 46 is driven to rotate by the first rotating rod 44, and then impurities such as dust and the like attached to the lower surface of the filter plate 42 can be removed, the filter plate 42 is prevented from being blocked, and the normal development of the flue gas denitration operation is ensured;

the scraped dust and the like fall down along the inner cavity of the air inlet pipe 2, then sequentially pass through the first through hole 52 and the second through hole 59 and fall into the dust collection box 510, when a proper amount of impurities such as dust and the like are stored in the first dust collection box 510, a user can hold the sleeve 54 and pull upwards, thereby stretching the spring 55 and the telescopic rod 53, and separating the positioning rod 56 from the positioning hole 57, then the user can rotate the sleeve 54, thereby driving the rotating plate 58 to rotate through the telescopic rod 53, further driving the two groups of dust collection boxes 510 to rotate, and loosening the sleeve 54 until the other dust collection box 510 rotates to the position under the first through hole 52, at the moment, the spring 55 contracts, thereby driving the sleeve 54 to move downwards, further enabling the positioning rod 56 to be inserted into the other corresponding positioning hole 57, at the moment, the scraped dust and the like fall into the other dust collection box 510, and the user can take down the first group of dust collection box 510 for cleaning, thereby realized the synchronous development of collection dirt operation and clearance operation, the practicality is higher.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a lime cellar SCR denitrification facility, includes SCR denitrification facility body (1), its characterized in that: the SCR denitration device comprises an SCR denitration device body (1), wherein the top end of the SCR denitration device body (1) is communicated with an air inlet pipe (2), one side of the air inlet pipe (2) is communicated with a connecting pipe (3), an auxiliary mechanism (4) matched with the connecting pipe (3) for use is arranged on the air inlet pipe (2), and a dust collecting mechanism (5) matched with the auxiliary mechanism (4) for use is arranged at the lower end of one side of the air inlet pipe (2);

the dust collection mechanism (5) comprises a fixed plate (51), the fixed plate (51) is fixedly connected with the air inlet pipe (2), a first through hole (52) communicated with the air inlet pipe (2) penetrates through the fixed plate (51), a telescopic rod (53) is inserted into the fixed plate (51) in a rotating mode, a sleeve (54) is arranged at one end of the telescopic rod (53), a spring (55) is fixedly connected to the inner side of the sleeve (54), the spring (55) is movably sleeved on the outer side of the telescopic rod (53), one end of the spring (55) is connected with the fixed plate (51) in a rotating mode, symmetrically arranged positioning rods (56) are arranged at the bottom end of the sleeve (54), two groups of positioning holes (57) which are matched with each other are formed in the fixed plate (51), the positioning rods (56) can be inserted into the positioning holes (57) in a sliding mode, and a rotating plate (58) is arranged at the bottom end of the telescopic rod (53), two groups of second through holes (59) are arranged on the rotating plate (58) in a penetrating way, and two groups of dust collecting boxes (510) are detachably arranged at the bottom end of the rotating plate (58).

2. The lime pit SCR denitration device of claim 1, wherein the auxiliary mechanism (4) comprises a motor (41) and a filter plate (42), the motor (41) is fixedly installed on the connecting pipe (3), the output end of the motor (41) penetrates through the air inlet pipe (2) and is provided with a side gear (43) at the tail end thereof, the filter plate (42) is fixedly installed in the inner cavity of the air inlet pipe (2), a first rotating rod (44) is rotatably inserted on the filter plate (42), the top end of the first rotating rod (44) is provided with a first gear (45), the first gear (45) is meshed with the side gear (43), the bottom end of the first rotating rod (44) is provided with symmetrically arranged scrapers (46), and one side of each scraper (46) is contacted with the bottom end of the filter plate (42).

3. The lime pit SCR denitration device of claim 2, wherein the auxiliary mechanism (4) further comprises a transverse plate (47), the transverse plate (47) is fixedly installed in the inner cavity of the air inlet pipe (2), a second rotating rod (48) is inserted on the transverse plate (47) in a rotating mode, a second gear (49) is arranged at the bottom end of the second rotating rod (48), the second gear (49) is meshed with the side gear (43), and fan blades (410) distributed in an array mode are fixedly installed at the top end of the second rotating rod (48).

4. The lime pit SCR denitration device of claim 2, wherein a support member (411) is fixedly sleeved outside the motor (41), and one end of the support member (411) is fixedly connected with the connecting pipe (3).

5. The SCR denitration device of the lime pit of claim 1, wherein two sets of through holes (511) are formed at one end of the dust box (510) in a penetrating manner, a fixing hole (512) matched with the through holes (511) is formed at the bottom end of the rotating plate (58), and bolts (513) can be inserted into the through holes (511) and the fixing hole (512) in a threaded manner.