CN217163877U

CN217163877U - SCR reducing agent injection apparatus

Info

Publication number: CN217163877U
Application number: CN202123417256.7U
Authority: CN
Inventors: 姜煜; 管正; 高林号
Original assignee: Nanjing Southeast Industrial Equipment Corp
Current assignee: Nanjing Southeast Industrial Equipment Corp
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-12
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a SCR reductant injection apparatus, including main storehouse, one side fixedly connected with connecting plate on main storehouse surface, the one end fixedly connected with mounting panel of connecting plate, one side fixedly connected with atomizer that the connecting plate top is close to the mounting panel, one side on atomizer surface is provided with the reductant entry, circular mounting groove has been seted up with the bottom on the top in main storehouse, the end storehouse has been seted up to the bottom of main storehouse inner chamber, the inner chamber in end storehouse is provided with the ring conveyer pipe. The utility model provides a SCR reductant injection apparatus passes through fan blade rotation, extracts the stirring to the flue gas, then mixes with the intraoral spun atomizing reductant of below injection, then the gas that blows off drives the epaxial rotor blade rotation of rotation, further stirs flue gas and atomizing reductant for the reductant is even attached to on the flue gas, and then improve equipment's treatment effect.

Description

SCR reducing agent injection apparatus

Technical Field

The utility model relates to a SCR denitration technology field especially relates to a SCR reductant injection apparatus.

Background

The process of removing nitrogen oxides in combustion flue gas and the importance of preventing environmental pollution are sharply proposed as the problem of the world, the mainstream process in the world is divided into SCR and SNCR, the national ultra-low emission requirement can be met in a plurality of denitration technologies, the most mature and stable Selective Catalytic Reduction (SCR) denitration is adopted, in an SCR denitration system, one of the cores is to inject gaseous reducing agents (mainly ammonia water and urea) into the flue gas, when the existing SCR reducing agent injection device is used, the reducing agents are not uniformly mixed with the flue gas when being injected into the flue gas, the treatment effect is poor, meanwhile, the injection port using the reducing agents for a long time is easy to be blocked, the reducing agents cannot be injected to influence the integral operation of equipment, meanwhile, workers need to regularly clean, time and labor are wasted, the working capacity is greatly increased, and simultaneously, the working efficiency is lowered, so that the practicability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a SCR reductant injection apparatus, the SCR reductant injection apparatus who has solved present when using, when spouting into the flue gas with the reductant, it is not enough even with the mixture of flue gas, make the treatment effect relatively poor, simultaneously the jet of long-time use reductant takes place to block up easily, and then lead to the unable blowout of reductant to influence the whole operation of equipment, need the periodic clearance of staff simultaneously, waste time and energy, great increase work load, lead to the work efficiency step-down simultaneously, make the relatively poor problem of practicality.

In order to solve the technical problem, the SCR reducing agent injection device provided by the utility model comprises a main bin, one side of the surface of the main bin is fixedly connected with a connecting plate, one end of the connecting plate is fixedly connected with a mounting plate, one side of the top end of the connecting plate, which is close to the mounting plate, is fixedly connected with an atomizer, one side of the surface of the atomizer is provided with a reducing agent inlet, the top end and the bottom end of the main bin are provided with circular mounting grooves, the bottom end of the inner cavity of the main bin is provided with a bottom bin, the inner cavity of the bottom bin is provided with an annular conveying pipe, the bottom end of the inner side of the circular mounting groove is uniformly provided with a plurality of groups of jet orifices, one end of the jet orifices extends to the inner cavity of the bottom bin and is communicated with the annular conveying pipe, the bottom end of the atomizer is fixedly connected with the conveying pipe, one end of the conveying pipe extends to the inner cavity of the bottom bin and is communicated with the annular conveying pipe, one side of the inner side of the circular mounting groove is provided with a uniform mixing mechanism, and auxiliary mixing mechanisms are arranged at two ends of the bottom end of the main bin.

Preferably, the homogeneous mixing mechanism including the installation storehouse, set up in the inboard one side of circular mounting groove, and the installation storehouse extends to the outside in main storehouse, one side that the installation storehouse top is close to the atomizer is provided with the motor, the output of motor is provided with dwang B, and dwang B's one end extends to the inner chamber in installation storehouse, the installation storehouse is located the inboard top fixedly connected with dwang A of circular mounting groove, and dwang A runs through the installation storehouse, the fixed cover in top in dwang A lateral wall installation storehouse is equipped with nested piece A, nested piece A's lateral wall fixedly connected with multiunit fan blade, the bottom of dwang A lateral wall is provided with the clearance subassembly, dwang B and dwang A are located the fixed cover of the lateral wall of installation storehouse inner chamber and are equipped with the belt pulley, the lateral wall cover of belt pulley is equipped with the belt.

Preferably, the clearance subassembly include nest block C, set up in the below in dwang A lateral wall installation storehouse, two sets of connecting rods of nest block C's lateral wall fixedly connected with, the one end of connecting rod is provided with the pappus brush, and the pappus brush is in same horizontal plane with the jet.

Preferably, supplementary hybrid mechanism include mounting plate, symmetry set up in the both ends of main storehouse bottom, it is two sets of mounting plate is close to the bottom fixedly connected with axis of rotation of one side each other, nest block B of three groups of lateral wall fixedly connected with of axis of rotation, nest block B's lateral wall fixedly connected with multiunit rotating blade.

Preferably, the outer side wall of the motor is sleeved with a motor cover, and a sealing ring is arranged at the joint of the bottom end of the motor cover and the installation bin.

Preferably, the two sides of the bottom end of the connecting plate are provided with supporting rods, and the supporting rods are conveniently connected with the mounting plate and one side of the surface of the main bin.

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

1. through fan blade rotation, extract the stirring to the flue gas, then mix with the spun atomizing reductant in the below jet orifice, then the gas that blows off drives the epaxial rotor blade rotation of rotation, further stirs flue gas and atomizing reductant for the reductant is even attached to on the flue gas, and then improve equipment's treatment effect.

2. Rotate through dwang A and can drive the pappus brush on the connecting rod and rotate and clean the jet, effectually avoid the jet to take place to block up, guarantee that the reductant normally spouts and avoid influencing the whole operation of equipment, and need not the manual work and carry out periodic clearance, labour saving and time saving is great has reduced operating personnel's work load, and then improve equipment's treatment quality and efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an SCR reductant injection apparatus according to a preferred embodiment of the present invention;

FIG. 2 is a top perspective view of FIG. 1;

fig. 3 is a perspective sectional view of fig. 1.

Reference numbers in the figures: 1. a main bin; 2. a circular mounting groove; 3. a fan blade; 4. rotating the rod A; 5. a sleeve block A; 6. a motor cover; 7. an atomizer; 8. a reductant inlet; 9. mounting a plate; 10. mounting a bottom plate; 11. a rotating shaft; 12. a rotating blade; 13. a sleeve block B; 14. a connecting plate; 15. a delivery pipe; 16. a motor; 17. rotating the rod B; 18. a belt; 19. installing a bin; 20. a soft brush; 21. an ejection port; 22. a sleeve block C; 23. a connecting rod; 24. a bottom bin; 25. an annular delivery pipe; 26. a pulley.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Please refer to fig. 1-3. An SCR reducing agent injection device comprises a main bin 1, one side of the surface of the main bin 1 is fixedly connected with a connecting plate 14, one end of the connecting plate 14 is fixedly connected with a mounting plate 9, one side of the top end of the connecting plate 14, which is close to the mounting plate 9, is fixedly connected with an atomizer 7, which can atomize a reducing agent, so that the reducing agent can be better contacted and mixed with flue gas, one side of the surface of the atomizer 7 is provided with a reducing agent inlet 8, the top end and the bottom end of the main bin 1 are provided with circular mounting grooves 2, the bottom end of the inner cavity of the main bin 1 is provided with a bottom bin 24, the inner cavity of the bottom bin 24 is provided with an annular conveying pipe 25, the bottom end of the inner side of the circular mounting groove 2 is uniformly provided with a plurality of groups of injection ports 21, one end of each injection port 21 extends to the inner cavity of the bottom bin 24 and is communicated with the annular conveying pipe 25, the bottom end of the atomizer 7 is fixedly connected with a conveying pipe 15, one end of the conveying pipe 15 extends to the inner cavity of the bottom bin 24 and is communicated with the annular conveying pipe 25, one side of the inner side of the circular mounting groove 2 is provided with an even mixing mechanism, and two ends of the bottom end of the main bin 1 are provided with auxiliary mixing mechanisms.

Specifically, the homogeneous mixing mechanism includes an installation bin 19, which is disposed on one side of the inner side of the circular installation slot 2, and the installation bin 19 extends to the outside of the main bin 1, a motor 16 is disposed on one side of the top end of the installation bin 19 near the atomizer 7, an output end of the motor 16 is provided with a rotating rod B17, and one end of the rotating rod B17 extends to the inner cavity of the installation bin 19, the top end of the installation bin 19 located on the inner side of the circular installation slot 2 is fixedly connected with a rotating rod a4, and the rotating rod a4 penetrates through the installation bin 19, a sleeve block a5 is fixedly sleeved above the outer side wall installation bin 19 of the rotating rod a4, a plurality of sets of fan blades 3 are fixedly connected to the outer side wall of the sleeve block a5, a cleaning assembly is disposed at the bottom end of the outer side wall of the rotating rod a4, a belt 26 is fixedly sleeved on the outer side walls of the inner cavity of the installation bin 19 of the rotating rod B17 and the rotating rod 4, a belt 18 is sleeved with a belt 18, and rotates through the fan blades 3, the flue gas is extracted and stirred, and then is mixed with atomized reducing agent sprayed from the lower spray opening 21.

Wherein, the clearance subassembly includes nest block C22, set up in the below of dwang A4 lateral wall installation storehouse 19, two sets of connecting rods 23 of lateral wall fixedly connected with of nest block C22, the one end of connecting rod 23 is provided with pappus brush 20, and pappus brush 20 is in same horizontal plane with jet orifice 21, rotate through dwang A4 and to drive the pappus brush 20 on the connecting rod 23 and rotate and clean jet orifice 21, effectually avoid jet orifice 21 to take place to block up, guarantee that the normal blowout of reductant avoids influencing the whole operation of equipment, and need not the manual work and carry out periodic clearance, the great reduction operating personnel's of labour saving and time saving work load, and then improve equipment's treatment quality and efficiency.

Wherein, supplementary mixing mechanism includes mounting plate 10, the symmetry sets up in the both ends of 1 bottom in main storehouse, two sets of mounting plate 10 are close to the bottom fixedly connected with axis of rotation 11 of one side each other, three cover blocks B13 of the lateral wall fixedly connected with of axis of rotation 11, the lateral wall fixedly connected with multiunit rotor blade 12 of cover block B13, the gas that blows off rotates through fan blade 3 drives the rotor blade 12 in the axis of rotation 11 and rotates, further stir flue gas and atomizing reductant, make the even attached to on the flue gas of reductant, and then improve equipment's treatment effect.

Wherein, the lateral wall cover of motor 16 is equipped with motor cover 6, and the bottom of motor cover 6 and the junction of installation storehouse 19 are provided with the sealing washer, and the both sides of connecting plate 14 bottom are provided with the bracing piece, play the supporting role, improve the stability of device, and the bracing piece is convenient and one side interconnect on mounting panel 9 and main storehouse 1 surface.

The utility model provides a SCR reductant injection apparatus is when using, through reductant entry 8 and reductant pipeline interconnect, then atomize the reductant through atomizer 7, then carry jet 21 department through conveyer pipe 15 and annular conveyer pipe 25 and spray, then drive dwang B17 through starter motor 16 and rotate, through mutually supporting between belt pulley 26 and the belt 18, can drive dwang A4 in step and rotate, and then drive fan blade 3 and rotate, extract the stirring to the flue gas, then mix with the spun atomized reductant in jet 21 below, then the gas that blows out drives the rotor blade 12 on the axis of rotation 11 and rotates, further stir flue gas and atomized reductant, make the even attaching to on the flue gas of reductant, and then improve equipment's treatment effect, can drive the pappus brush 20 rotation on the connecting rod 23 when dwang A4 rotates simultaneously and clean jet 21, the jet orifice 21 is effectively prevented from being blocked, the reducing agent is guaranteed to be normally sprayed out to avoid influencing the overall operation of the equipment, the manual cleaning is not needed, the time and labor are saved, the workload of operators is greatly reduced, and the treatment quality and efficiency of the equipment are improved.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The SCR reducing agent injection device is characterized by comprising a main bin (1), wherein a connecting plate (14) is fixedly connected to one side of the surface of the main bin (1), a mounting plate (9) is fixedly connected to one end of the connecting plate (14), an atomizer (7) is fixedly connected to one side, close to the mounting plate (9), of the top end of the connecting plate (14), a reducing agent inlet (8) is arranged on one side of the surface of the atomizer (7), a circular mounting groove (2) is formed in the top end and the bottom end of the main bin (1), a bottom bin (24) is formed in the bottom end of the inner cavity of the main bin (1), an annular conveying pipe (25) is arranged in the inner cavity of the bottom bin (24), a plurality of groups of injection ports (21) are uniformly arranged at the bottom end of the inner side of the circular mounting groove (2), one end of each injection port (21) extends to the inner cavity of the bottom bin (24) and is communicated with the annular conveying pipe (25), the bottom fixedly connected with conveyer pipe (15) of atomizer (7), the one end of conveyer pipe (15) extends to end storehouse (24) inner chamber and communicates each other with annular duct (25), one side of circular mounting groove (2) inboard is provided with homogeneous mixing mechanism, the both ends of main storehouse (1) bottom are provided with supplementary mixing mechanism.

2. The SCR reducing agent injection device according to claim 1, wherein the homogeneous mixing mechanism comprises an installation bin (19) and a plurality of sets of fan blades (3) arranged on one side of the inner side of the circular installation slot (2), the installation bin (19) extends to the outer side of the main bin (1), a motor (16) is arranged on one side of the top end of the installation bin (19) close to the atomizer (7), a rotating rod B (17) is arranged at the output end of the motor (16), one end of the rotating rod B (17) extends to the inner cavity of the installation bin (19), a rotating rod A (4) is fixedly connected to the top end of the inner side of the circular installation slot (2) of the installation bin (19), the rotating rod A (4) penetrates through the installation bin (19), a sleeve block A (5) is fixedly sleeved above the outer side wall installation bin (19) of the rotating rod A (4), and a plurality of sets of fan blades (3) are fixedly connected to the outer side wall of the sleeve block A (5), the bottom of dwang A (4) lateral wall is provided with the clearance subassembly, dwang B (17) all fixed the cover with the lateral wall that dwang A (4) are located installation storehouse (19) inner chamber are equipped with belt pulley (26), the lateral wall cover of belt pulley (26) is equipped with belt (18).

3. The SCR reducing agent injection device of claim 2, wherein the cleaning assembly comprises a sleeve block C (22) arranged below the outer side wall installation bin (19) of the rotating rod A (4), two groups of connecting rods (23) are fixedly connected to the outer side wall of the sleeve block C (22), one end of each connecting rod (23) is provided with a soft brush (20), and the soft brush (20) and the injection port (21) are located on the same horizontal plane.

4. The SCR reducing agent injection device of claim 1, wherein the auxiliary mixing mechanism comprises mounting bottom plates (10) symmetrically arranged at two ends of the bottom end of the main bin (1), two sets of the mounting bottom plates (10) are fixedly connected with rotating shafts (11) at the bottom ends of the sides close to each other, three sets of sleeve blocks B (13) are fixedly connected to the outer side wall of each rotating shaft (11), and multiple sets of rotating blades (12) are fixedly connected to the outer side wall of each sleeve block B (13).

5. The SCR reducing agent injection device of claim 2, wherein a motor cover (6) is sleeved on the outer side wall of the motor (16), and a sealing ring is arranged at the connection position of the bottom end of the motor cover (6) and the installation bin (19).

6. The SCR reductant injection apparatus of claim 1, wherein support rods are provided on both sides of the bottom end of the connection plate (14) and facilitate interconnection with the mounting plate (9) and one side of the surface of the main bin (1).