Mixing and distributing device of SNCR (selective non-catalytic reduction) denitration system

Abstract

The utility model discloses a mixing and distributing device of an SNCR (Selective Non-Catalytic Reduction) denitration system, which belongs to the technical field of SNCR denitration systems, solves the problem that the existing spraying equipment is inconvenient to clean, and comprises a first processing barrel, a second processing barrel and a spray gun main body, the second processing barrel is arranged on one side of the first processing barrel, and the first processing barrel is communicated with the second processing barrel through a pipeline; a spray gun body is installed on the first machining barrel, the output end of the spray gun body penetrates through the interior of the first machining barrel, a cleaning mechanism used for cleaning the output end of the spray gun body is installed on the inner wall of the first machining barrel, and by installing the cleaning mechanism, a first horizontal gear drives a transmission wheel to rotate, and an eccentric rod on the lower surface of the transmission wheel slides in a transmission groove; and the cleaning assembly scrapes and cleans the output end of the spray gun body, and the situation that the output end of the spray gun body is bonded with impurities, and normal spraying is affected is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to SNCR denitration system technical field, specifically related to SNCR denitration system's mixed distribution device. BACKGROUND

[0002] SNCR denitration system is namely selective non catalytic reduction denitration technology, it is an economic efficient flue gas denitration technology, it does not need catalyst, through spraying ammonia or urea etc.

[0003] In SNCR denitration system, it will use mixed distribution device, specific working process is as follows: flue gas enters the inside of furnace through pipeline, and the reducing agent of certain concentration is extracted from the storage tank by the delivery pump and is sent to the spraying equipment, and the spraying equipment sprays the reducing agent solution into the furnace and mixes with the flue gas, in the mixing process, the reducing agent and nitrogen oxide in the flue gas occur chemical reaction, generate nitrogen and water, according to the real-time monitoring of flue gas composition and denitration effect, the spraying equipment adjusts and distributes the injection amount of reducing agent to ensure the best denitration effect, but, the spraying equipment lacks the necessary protection mechanism in the use process, and the impurities in the flue gas are easy to be bonded in the position of the nozzle of the spraying equipment, which influences the normal work of the spraying equipment, and even causes the nozzle of the spraying equipment to be blocked, and the new SNCR denitration system's mixed distribution device is proposed for the above problems. SUMMARY

[0004] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] The mixing distribution device of the SNCR denitration system comprises a first processing cylinder, a second processing cylinder and a lance body, the first processing cylinder is provided with the second processing cylinder on one side, the first processing cylinder and the second processing cylinder are communicated through a pipeline, the lance body is installed on the first processing cylinder, the output end of the lance body penetrates through the inside of the first processing cylinder, a cleaning mechanism for cleaning the output end of the lance body is installed on the inner wall of the first processing cylinder, the cleaning mechanism comprises a reciprocating mounting seat, a reciprocating moving groove, a reciprocating moving plate, a cleaning assembly, a transmission wheel, a transmission groove and an eccentric rod, the reciprocating mounting seat is fixedly installed on the inner wall of the first processing cylinder, the reciprocating moving groove is symmetrically formed on the reciprocating mounting seat, the reciprocating moving plate is slidably installed in the reciprocating moving groove, the cleaning assembly is fixedly installed on one side of the reciprocating moving plate and is attached to the upper surface of the output end of the lance body, the transmission wheel is rotatably installed on the reciprocating mounting seat, the transmission groove is formed on the reciprocating moving plate, the eccentric rod is installed on the lower surface of the transmission wheel and slides in the transmission groove.

[0007] As the preferred technical scheme of the mixing distribution device of the SNCR denitration system of the utility model, the cleaning mechanism further comprises a first flat gear, the first flat gear is installed on the upper surface of the transmission wheel, a stirring mechanism for stirring the mixture is installed in the first processing cylinder, a driving mechanism for providing driving for the stirring mechanism is installed on the upper surface of the first processing cylinder, the stirring mechanism comprises a rotating mounting seat, a first rotating rod, a stirring impeller and a second flat gear, the rotating mounting seat is installed on the upper surface of the first processing cylinder, the first rotating rod is rotatably installed on the rotating mounting seat and penetrates through the inside of the first processing cylinder, the stirring impeller is installed at the bottom end of the first rotating rod, the second flat gear is installed at the top end of the first rotating rod and is in contact with the driving mechanism.

[0008] As the preferred technical scheme of the mixing distribution device of the SNCR denitration system of the utility model, the stirring mechanism further comprises a second rotating rod, a third flat gear and a fourth flat gear, the second rotating rod is rotatably installed on the upper surface of the first processing cylinder and penetrates through the inside of the first processing cylinder, the second rotating rod is in the form of a circular ring, the first rotating rod is connected with the second rotating rod, the third flat gear is installed at the bottom end of the second rotating rod and is connected with the first rotating rod in a meshing mode, the fourth flat gear is installed at the top end of the second rotating rod and is connected with the first rotating rod in a meshing mode.

[0009] As the preferred technical scheme of the mixing distribution device of the SNCR denitration system of the utility model, the driving mechanism comprises a protective shell, a driving motor and a fifth flat gear, the protective shell is arranged above the first processing cylinder, the driving motor is arranged in the protective shell, the fifth flat gear is installed on the output shaft of the driving motor and is in contact with the stirring mechanism.

[0010] As the utility model discloses a SNCR denitration system's mixed distribution device optimal technical scheme, drive mechanism still includes lifting seat and electric push rod, and lifting seat is symmetrically installed on the protective shell, and electric push rod is symmetrically installed on the first processing cylinder upper surface, and the electric push rod moving end is connected with lifting seat.

[0011] As the utility model discloses a SNCR denitration system's mixed distribution device optimal technical scheme, the first processing cylinder is composed of mixing cylinder, air inlet pipe and heating assembly, and the second processing cylinder is communicated with the mixing cylinder through pipeline, and the mixing cylinder is installed with the air inlet pipe that communicates with the inside, and the heating assembly is installed on the mixing cylinder inner wall and is located above the air inlet pipe.

[0012] As the utility model discloses a SNCR denitration system's mixed distribution device optimal technical scheme, cleaning component is composed of connecting rod and trapezoidal block, and the connecting rod is symmetrically installed on reciprocating moving plate, and the trapezoidal block is installed on the connecting rod, and the trapezoidal block upper surface is attached with the output end of the spray gun body.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] In the utility model, through the installation cleaning mechanism, the first flat gear drives the transmission wheel to rotate, the transmission wheel lower surface eccentric shaft slides in the transmission groove, drives reciprocating moving plate to move back and forth along reciprocating moving groove, and the cleaning component scrapes and cleans the output end of the spray gun body, prevents the output end of the spray gun body from sticking impurities, and affects normal spraying.

[0015] In the utility model, through the installation stirring mechanism, the second flat gear drives the first rotating rod to rotate in the second rotating rod, and the stirring impeller accelerates the mixing of flue gas and atomized reducing agent, the fourth flat gear drives the second rotating rod to rotate, and the third flat gear contacts the first flat gear, to provide drive for the cleaning mechanism. ACCURACY OF DRAWINGS

[0016] Figure 1 It is one of the overall structure schematic diagrams provided by the utility model from another angle;

[0017] Figure 2 It is another overall structure schematic diagram provided by the utility model from another angle;

[0018] Figure 3 It is the first processing cylinder partial sectional view schematic diagram provided by the utility model;

[0019] Figure 4 It is the cleaning mechanism structure schematic diagram provided by the utility model;

[0020] Figure 5 It is the stirring mechanism structure schematic diagram provided by the utility model;

[0021] Figure 6The driving mechanism structure schematic view provided by the utility model.

[0022] The correspondence between the reference signs in the drawings and the component names is as follows:

[0023] 1, first processing cylinder; 2, second processing cylinder; 3, spray gun main body; 4, cleaning mechanism; 41, reciprocating mounting seat; 42, reciprocating moving groove; 43, reciprocating moving plate; 44, cleaning assembly; 45, transmission wheel; 46, transmission groove; 47, eccentric rod; 48, first spur gear; 5, stirring mechanism; 51, rotating mounting seat; 52, first rotating rod; 53, stirring impeller; 54, second spur gear; 55, second rotating rod; 56, third spur gear; 57, fourth spur gear; 6, driving mechanism; 61, protective shell; 62, driving motor; 63, fifth spur gear; 64, lifting seat; 65, electric push rod. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, easy to understand, the specific implementation of the utility model is described in detail below combined with the drawings of the specification.

[0025] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0026] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments. The present application provides the following embodiments.

[0027] As Figure 1 , Figure 2 , Figure 3 and Figure 4It is the mixed distribution device structure schematic view of the SNCR denitration system in the embodiment, the mixed distribution device of the SNCR denitration system in the embodiment includes: first processing cylinder 1, second processing cylinder 2 and spray gun body 3, first processing cylinder 1 side is equipped with second processing cylinder 2, and first processing cylinder 1 and second processing cylinder 2 are communicated by pipeline, first processing cylinder 1 is installed with spray gun body 3, and the output end of spray gun body 3 passes through the inside of first processing cylinder 1, the inner wall of first processing cylinder 1 is installed with the cleaning mechanism 4 for cleaning the output end of spray gun body 3, cleaning mechanism 4 includes reciprocating mounting seat 41, reciprocating movement groove 42, reciprocating movement plate 43, cleaning assembly 44, transmission wheel 45, transmission groove 46 and eccentric rod 47, reciprocating mounting seat 41 is fixedly installed on the inner wall of first processing cylinder 1, reciprocating movement groove 42 is symmetrically opened on reciprocating mounting seat 41, reciprocating movement plate 43 is slidably installed in reciprocating movement groove 42, cleaning assembly 44 is fixedly installed on one side of reciprocating movement plate 43, and the upper surface of cleaning assembly 44 is attached to the output end of spray gun body 3, transmission wheel 45 is rotatably installed on reciprocating mounting seat 41, transmission groove 46 is opened on reciprocating movement plate 43, eccentric rod 47 is installed on the lower surface of transmission wheel 45, and eccentric rod 47 slides in transmission groove 46.

[0028] In the embodiment, the flue gas enters the inside of first processing cylinder 1, the spray gun body 3 sprays the reducing agent atomized and contacts with the flue gas, chemical reaction occurs, nitrogen and water are generated, the extraction equipment extracts it through second processing cylinder 2, when the output end of spray gun body 3 sticks to impurities, transmission wheel 45 rotates, drives eccentric rod 47 to slide in transmission groove 46, controls reciprocating movement plate 43 to reciprocate along reciprocating movement groove 42, cleaning assembly 44 scrapes and cleans the output end of spray gun body 3, prevents spray gun body 3 from being blocked.

[0029] As Figure 5As shown, the cleaning mechanism 4 further comprises a first spur gear 48, the first spur gear 48 is installed on the upper surface of the transmission wheel 45, the first processing barrel 1 is internally provided with a stirring mechanism 5 for stirring the mixture, the first processing barrel 1 is provided with a driving mechanism 6 on the upper surface for providing driving for the stirring mechanism 5, the stirring mechanism 5 comprises a rotating mounting seat 51, a first rotating rod 52, a stirring impeller 53 and a second spur gear 54, the rotating mounting seat 51 is installed on the upper surface of the first processing barrel 1, the first rotating rod 52 is rotatably installed on the rotating mounting seat 51 and penetrates through the inside of the first processing barrel 1 at the bottom end, the stirring impeller 53 is installed at the bottom end of the first rotating rod 52, the second spur gear 54 is installed at the top end of the first rotating rod 52 and is in contact with the driving mechanism 6, the stirring mechanism 5 further comprises a second rotating rod 55, a third spur gear 56 and a fourth spur gear 57, the second rotating rod 55 is rotatably installed on the upper surface of the first processing barrel 1 and penetrates through the inside of the first processing barrel 1 at the bottom end, the second rotating rod 55 is in the form of a circular ring, the first rotating rod 52 is connected with the second rotating rod 55, the third spur gear 56 is installed at the bottom end of the second rotating rod 55 and is connected with the first rotating rod 52, and the fourth spur gear 57 is installed at the top end of the second rotating rod 55 and is connected with the first rotating rod 52.

[0030] In the embodiment, the driving mechanism 6 is started to drive the second spur gear 54 to rotate, the second spur gear 54 controls the first rotating rod 52 to rotate in the second rotating rod 55, at the same time, the stirring impeller 53 at the bottom end rotates in the first processing barrel 1 to assist the mixing of the flue gas and the reducing agent and improve the mixing efficiency, when it is needed to clean the output end of the spray gun body 3, the driving mechanism 6 moves downward to drive the fourth spur gear 57 to rotate, the fourth spur gear 57 controls the second rotating rod 55 to rotate, the third spur gear 56 at the bottom end of the second rotating rod 55 contacts the first spur gear 48, and the first spur gear 48 drives the transmission wheel 45 to rotate to clean the output end of the spray gun body 3.

[0031] As shown in the figure, Figure 6 The driving mechanism 6 comprises a protective shell 61, a driving motor 62 and a fifth spur gear 63, the protective shell 61 is arranged above the first processing barrel 1, the driving motor 62 is arranged in the protective shell 61, the fifth spur gear 63 is installed on the output shaft of the driving motor 62 and is in contact with the stirring mechanism 5, the driving mechanism 6 further comprises a lifting seat 64 and an electric push rod 65, the lifting seat 64 is symmetrically installed on the protective shell 61, and the electric push rod 65 is symmetrically installed on the upper surface of the first processing barrel 1 and is connected with the lifting seat 64 at the moving end.

[0032] In the embodiment, the electric push rod 65 moves to extend, the lifting seat 64 drives the protective shell 61 to move upward, the output end of the driving motor 62 is close to the second spur gear 54, the fifth spur gear 63 is meshed and connected with the second spur gear 54, the first rotating rod 52 is driven to rotate, the electric push rod 65 is retracted, the protective shell 61 is driven to move downward, the fifth spur gear 63 contacts the fourth spur gear 57, and the second rotating rod 55 is driven to rotate.

[0033] As shown in Figure 2 The first processing cylinder 1 is composed of a mixing cylinder, an air inlet pipe and a heating assembly, the second processing cylinder 2 is communicated with the mixing cylinder through a pipeline, the mixing cylinder is provided with the air inlet pipe communicated with the inside, and the mixing cylinder is provided with the heating assembly on the inner wall and above the air inlet pipe.

[0034] In the embodiment, the flue gas enters the mixing cylinder through the air inlet pipe, the heating assembly heats the atomized reducing agent, and the mixing of the flue gas and the reducing agent is accelerated.

[0035] As shown in Figure 4 The cleaning assembly 44 is composed of connecting rods and trapezoidal blocks, the connecting rods are symmetrically installed on the reciprocating moving plate 43, the trapezoidal blocks are installed on the connecting rods, and the upper surfaces of the trapezoidal blocks are attached to the output end of the spray gun body 3.

[0036] In the embodiment, the reciprocating moving plate 43 reciprocates, the connecting rods drive the trapezoidal blocks to reciprocate, and the upper surfaces of the trapezoidal blocks scrape and clean the output end of the spray gun body 3.

[0037] The above is a further detailed description of the utility model in combination with the specific embodiments, and the specific embodiments of the utility model cannot be limited to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as belonging to the protection range determined by the claims of the utility model.

Claims

1. A mixing and distributing device for SNCR denitration system, comprising a first processing cylinder (1), a second processing cylinder (2) and a lance body (3), the first processing cylinder (1) is provided with the second processing cylinder (2) on one side, and the first processing cylinder (1) and the second processing cylinder (2) are communicated through a pipeline, the first processing cylinder (1) is provided with the lance body (3), and the output end of the lance body (3) penetrates through the inside of the first processing cylinder (1), characterized in that: The first processing barrel (1) is internally provided with a cleaning mechanism (4) for cleaning the output end of the spray gun body (3), the cleaning mechanism (4) comprises a reciprocating mounting seat (41), a reciprocating moving groove (42), a reciprocating moving plate (43), a cleaning assembly (44), a transmission wheel (45), a transmission groove (46) and an eccentric rod (47), the reciprocating mounting seat (41) is fixedly installed on the inner wall of the first processing barrel (1), the reciprocating moving groove (42) is symmetrically formed on the reciprocating mounting seat (41), the reciprocating moving plate (43) is slidably installed in the reciprocating moving groove (42), the cleaning assembly (44) is fixedly installed on one side of the reciprocating moving plate (43), and the upper surface of the cleaning assembly (44) is attached to the output end of the spray gun body (3), the transmission wheel (45) is rotatably installed on the reciprocating mounting seat (41), the transmission groove (46) is formed on the reciprocating moving plate (43), and the eccentric rod (47) is installed on the lower surface of the transmission wheel (45) and slidably arranged in the transmission groove (46).

2. The mixing and distribution device for SNCR deNOx system according to claim 1, characterized in that, The cleaning mechanism (4) further comprises a first flat gear (48), the first flat gear (48) is installed on the upper surface of the transmission wheel (45), the first processing barrel (1) is internally provided with a stirring mechanism (5) for stirring and mixing, the first processing barrel (1) is externally provided with a driving mechanism (6) for driving the stirring mechanism (5), the stirring mechanism (5) comprises a rotating mounting seat (51), a first rotating rod (52), a stirring impeller (53) and a second flat gear (54), the rotating mounting seat (51) is installed on the upper surface of the first processing barrel (1), the first rotating rod (52) is rotatably installed on the rotating mounting seat (51) and penetrates through the inside of the first processing barrel (1), the stirring impeller (53) is installed on the bottom end of the first rotating rod (52), and the second flat gear (54) is installed on the top end of the first rotating rod (52) and in contact with the driving mechanism (6).

3. The mixing and distribution device for SNCR deNOx system according to claim 2, characterized in that, The stirring mechanism (5) further comprises a second rotating rod (55), a third flat gear (56) and a fourth flat gear (57), the second rotating rod (55) is rotatably installed on the upper surface of the first processing barrel (1) and penetrates through the inside of the first processing barrel (1), the second rotating rod (55) is in the form of a circular ring, the first rotating rod (52) is connected with the second rotating rod (55), the third flat gear (56) is installed on the bottom end of the second rotating rod (55) and connected with the first rotating rod (52), the third flat gear (56) is in meshing connection with the first flat gear (48), the fourth flat gear (57) is installed on the top end of the second rotating rod (55) and in contact with the first rotating rod (52), and the fourth flat gear (57) is in contact with the driving mechanism (6).

4. The mixing and distribution device for SNCR denitration system according to claim 2, characterized in that, The driving mechanism (6) comprises a protective shell (61), a driving motor (62) and a fifth spur gear (63), the first processing cylinder (1) is provided with the protective shell (61) above, the driving motor (62) is arranged inside the protective shell (61), the fifth spur gear (63) is installed on the output shaft of the driving motor (62), and the fifth spur gear (63) is in contact with the stirring mechanism (5).

5. The mixing and distribution device for SNCR deNOx systems according to claim 4, characterized in that The driving mechanism (6) further comprises a lifting seat (64) and an electric push rod (65), the lifting seat (64) is symmetrically installed on the protective shell (61), the electric push rod (65) is symmetrically installed on the upper surface of the first processing cylinder (1), and the moving end of the electric push rod (65) is connected with the lifting seat (64).

6. The mixing and distribution device for SNCR deNOx system according to claim 1, wherein The first processing cylinder (1) is composed of a mixing cylinder, an air inlet pipe and a heating assembly, the second processing cylinder (2) is communicated with the mixing cylinder through a pipeline, the air inlet pipe is installed on the mixing cylinder and communicated with the inside, and the heating assembly is installed on the inner wall of the mixing cylinder and located above the air inlet pipe.

7. The mixing and distribution device for SNCR deNOx system according to claim 1, wherein The cleaning assembly (44) is composed of a connecting rod and a trapezoidal block, the connecting rod is symmetrically installed on the reciprocating moving plate (43), the trapezoidal block is installed on the connecting rod, and the upper surface of the trapezoidal block is attached to the output end of the spray gun body (3).

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