CN207393280U - A kind of diesel motor exhaust denitrating system - Google Patents

Abstract

The utility model discloses a kind of diesel motor exhaust denitrating systems, one end through connection of the two side of the mixing duct with air pipeline, the other end of two air pipelines is connected respectively with tail gas generation device and catalyst reaction case, and ventilation hole is offered on side wall of the catalyst reaction case away from air pipeline, one end through connection of the urea tank and first pipe.The utility model is simple in structure, closes exhaust fan, opens flexible door and takes out crystal, T-bar is promoted, separates helical gear and helical teeth, helical gear sets back, under the action of second spring, baffle sets back, and blocks second pipe and enters to prevent urea liquid in second pipe, this combining structure, it is easy to operate, it is easy to use, timely the crystal generated after the urea liquid evaporation inside first pipe can be cleared up, line clogging is avoided, ensure that the normal operation of denitrating system.

Description

A kind of diesel motor exhaust denitrating system

Technical field

The utility model is related to motor exhaust field more particularly to a kind of diesel motor exhaust denitrating systems.

Background technology

Nitrogen oxides in vehicle exhaust mainly has nitric oxide and nitrogen dioxide, they can destroy respiratory system, draw The problems such as bronchitis and pulmonary emphysema are played, China is as an ever-increasing automobile production and the big country used, because of vapour The pollution that vehicle generates can not be ignored, therefore the denitrating system of vehicle exhaust is especially important, but denitrating system is shut down every time Afterwards, spraying system pipeline meeting residual urea solution, blocking pipeline after evaporation have an impact to reusing.

Utility model content

The purpose of this utility model is and a kind of diesel engine proposed in order to solve shortcoming in the prior art Tail gas denitration system.

To achieve these goals, the utility model employs following technical solution：

A kind of diesel motor exhaust denitrating system, including tail gas generation device, mixing duct, catalyst reaction case, sky Feed channel, urea tank, first pipe, urea pump and twin spray gun, the two side of the mixing duct is and air hose One end through connection in road, the other end of two air pipelines connect respectively with tail gas generation device and catalyst reaction case It connects, and one end of ventilation hole, the urea tank and first pipe is offered on side wall of the catalyst reaction case away from air pipeline Through connection, and first pipe is equipped with urea pump, the other end of the first pipe through mixing duct bottom wall and with it is double Fluid atomizing spray gun through connection is connected with installs case on the side wall of the first pipe, and the installs case is internally provided with two A second pipe, one end of two second pipes run through the side wall of installs case and extend to the outside of installs case, and two The other end of a second pipe through installs case another side wall and with the side wall through connection of first pipe, close to urea pump The inside of second pipe be connected with filter screen and exhaust fan in turn from left to right, the lower end of the second pipe offers first Through hole, and first through hole is located at the lower section of filter screen, the side wall of the first through hole is rotatably connected to flexible door；

The madial wall of the installs case is rotatably connected to helical gear, and the helical gear engages helical teeth, and helical teeth be connected with it is T-shaped Bar, one end movable sleeve of the T-bar away from helical teeth is connected to sleeve, and is connected between the side wall of T-bar and the madial wall of sleeve There is the first spring, the madial wall of the sleeve one end and installs case away from helical teeth connects, at the helical gear sidewall edge One end of connecting line is connected with, and the other end of connecting line is connected with the upper end of baffle, the lower end of the baffle sequentially passes through limit The upper surface of position plate and second pipe, limiting plate are fixedly connected with the madial wall of installs case, and the baffle is located inside second pipe One end be in contact with the inner bottom wall of second pipe, the baffle fixing sleeve is connected to ring block, and the upper surface of ring block and limit Second spring is connected between the lower face of position plate.

Preferably, there are two the second spring is total to, and it is symmetrical arranged on baffle.

Preferably, the lower face of the flexible door is connected with draw ring.

Preferably, the lower end of the baffle is connected with sponge.

Preferably, it is connected with rocking handle on the helical gear side wall.

Compared with prior art, the beneficial effects of the utility model are：The utility model is simple in structure, is filtered by adding in The structures such as net, flexible door, helical gear, helical teeth and T-bar rotate helical gear, and helical teeth fixes it, and baffle is driven by connecting line It moving up, exhaust fan drives through external power supply, and the crystal generated after urea liquid is evaporated is drawn at filter screen, after cleaning, Exhaust fan is closed, flexible door is opened and takes out crystal, T-bar is promoted, separates helical gear and helical teeth, helical gear recovers former Position, under the action of second spring, baffle sets back, and blocks second pipe and enters to prevent urea liquid in second pipe, this Combining structure, easy to operate, easy to use, the crystal generated after can timely being evaporated to the urea liquid inside first pipe It is cleared up, avoids line clogging, ensure that the normal operation of denitrating system.

Description of the drawings

Fig. 1 be the utility model proposes structure diagram；

Fig. 2 is the utility model A structure enlargement diagrams.

In figure：Tail gas generation device 1, mixing duct 2, catalyst reaction case 3, air pipeline 4, urea tank 5, first pipe 6th, installs case 61, second pipe 62, exhaust fan 63, filter screen 64, flexible door 65, helical gear 66, helical teeth 67, T-bar 68, sleeve 69th, connecting line 610, baffle 611, second spring 612, ring block 613, limiting plate 614, urea pump 7, twin spray gun 8.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole Embodiment.

With reference to Fig. 1-2, a kind of diesel motor exhaust denitrating system, including tail gas generation device 1, mixing duct 2, catalysis Agent reaction chamber 3, air pipeline 4, urea tank 5, first pipe 6, urea pump 7 and twin spray gun 8, the two of mixing duct 2 One end through connection of the side wall with air pipeline 4, the other ends of two air pipelines 4 is respectively with tail gas generation device 1 and urging Agent reaction chamber 3 connects, and ventilation hole is offered on side wall of the catalyst reaction case 3 away from air pipeline 4, urea tank 5 and One end through connection of one pipeline 6, and first pipe 6 is equipped with urea pump 7, the other end of first pipe 6 runs through mixing duct 2 Bottom wall and with 8 through connection of twin spray gun, be connected with installs case 61 on the side wall of first pipe 6, installs case 61 Two second pipes 62 are internally provided with, one end of two second pipes 62 runs through the side wall of installs case 61 and extends to installs case 61 outside, and the other end of two second pipes 62 through installs case 61 another side wall and with the side wall of first pipe 6 Through connection is connected with filter screen 64 and exhaust fan 63 in turn from left to right close to the inside of the second pipe 62 of urea pump 7, the The lower end of two pipelines 62 offers first through hole, and first through hole is located at the lower section of filter screen 64, and the side wall of first through hole rotates It is connected with flexible door 65；

The madial wall of installs case 61 is rotatably connected to helical gear 66, and helical gear 66 engages helical teeth 67, and helical teeth 67 is connected with T Type bar 68, one end movable sleeve of the T-bar 68 away from helical teeth 67 are connected to sleeve 69, and the inside of the side wall of T-bar 68 and sleeve 69 The first spring is connected between wall, the one end of sleeve 69 away from helical teeth 67 is connected with the madial wall of installs case 61, helical gear 66 One end of connecting line 610 is connected at sidewall edge, and the other end of connecting line 610 is connected with the upper end of baffle 611, baffle 611 lower end sequentially passes through the upper surface of limiting plate 614 and second pipe 62, and limiting plate 614 is fixedly connected with the interior of installs case 61 Side wall, one end that baffle 611 is located inside second pipe 62 are in contact with the inner bottom wall of second pipe 62,611 fixing sleeve of baffle Ring block 613 is connected to, and second spring 612 is connected between the upper surface of ring block 613 and the lower face of limiting plate 614.

There are two second spring 612 is common, and it is symmetrical arranged on baffle 611, the lower face of flexible door 65 is connected with draw ring, The lower end of baffle 611 is connected with sponge, and rocking handle is connected on the side wall of helical gear 66.

Operation principle：The tail gas that tail gas generation device 1 generates enters mixing duct 2 by air pipeline 4, urea tank 5 Urea liquid is sprayed onto through twin spray gun 8 in air pipeline 4 in the case where the urea pump 7 driven through external power supply is acted on, tail gas Enter after being reacted with urea liquid in catalyst reaction case 3, the nitrogen and water generated after being reacted with SCR catalyst is discharged to air In, after reaction, helical gear 66 being rotated counterclockwise, helical teeth 67 fixes it, by connecting line 610 baffle 611 is driven to move up, Exhaust fan 63 drives through external power supply, and the crystal generated after urea liquid is evaporated is drawn at filter screen 64, after cleaning, closes Exhaust fan 63 is closed, flexible door 65 is opened and takes out crystal, T-bar 68 is promoted, separates helical gear 66 and helical teeth 67, helical gear 66 set back, and under the action of second spring 612, baffle 611 sets back, block second pipe 62 to prevent urea liquid into Enter in second pipe 62, this combining structure is easy to operate, easy to use, can be timely molten to the urea inside first pipe 6 The crystal generated after liquid evaporation is cleared up, and is avoided line clogging, be ensure that the normal operation of denitrating system.

The above is only the preferable specific embodiment of the utility model, but the scope of protection of the utility model is not This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, according to this practicality New technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (5)

1. a kind of diesel motor exhaust denitrating system, including tail gas generation device (1), mixing duct (2), catalyst reaction case (3), air pipeline (4), urea tank (5), first pipe (6), urea pump (7) and twin spray gun (8), feature exists In：One end through connection of the two side of the mixing duct (2) with air pipeline (4), two air pipelines (4) The other end is connected respectively with tail gas generation device (1) and catalyst reaction case (3), and catalyst reaction case (3) is away from air hose Ventilation hole, the urea tank (5) and one end through connection of first pipe (6), and first pipe are offered on the side wall in road (4) (6) urea pump (7) is equipped with, the other end of the first pipe (6) runs through the bottom wall and and twin of mixing duct (2) Spray gun (8) through connection is connected with installs case (61), the inside of the installs case (61) on the side wall of the first pipe (6) If there are two second pipe (62), one end of two second pipes (62) is run through the side wall of installs case (61) and is extended to The outside of installs case (61), and the other end of two second pipes (62) through installs case (61) another side wall and with first The side wall through connection of pipeline (6) is connected with filtering in turn from left to right close to the inside of the second pipe (62) of urea pump (7) Net (64) and exhaust fan (63), the lower end of the second pipe (62) offers first through hole, and first through hole is located at filter screen (64) lower section, the side wall of the first through hole are rotatably connected to flexible door (65)；

The madial wall of the installs case (61) is rotatably connected to helical gear (66), and the helical gear (66) engages helical teeth (67), and Helical teeth (67) is connected with T-bar (68), and one end movable sleeve of the T-bar (68) away from helical teeth (67) is connected to sleeve (69), and T The first spring is connected between the side wall of type bar (68) and the madial wall of sleeve (69), the separate helical teeth (67) of the sleeve (69) One end is connected with the madial wall of installs case (61), and the one of connecting line (610) is connected at the sidewall edge of the helical gear (66) End, and the other end of connecting line (610) is connected with the upper end of baffle (611), activity runs through successively for the lower end of the baffle (611) The upper surface of limiting plate (614) and second pipe (62), limiting plate (614) is fixedly connected with the madial wall of installs case (61), described Baffle (611) is located at the internal one end of second pipe (62) and is in contact with the inner bottom wall of second pipe (62), the baffle (611) Fixing sleeve is connected to ring block (613), and is connected between the upper surface of ring block (613) and the lower face of limiting plate (614) Two springs (612).

2. a kind of diesel motor exhaust denitrating system according to claim 1, it is characterised in that：The second spring (612) there are two altogether, and it is symmetrical arranged on baffle (611).

3. a kind of diesel motor exhaust denitrating system according to claim 1, it is characterised in that：The flexible door (65) Lower face be connected with draw ring.

4. a kind of diesel motor exhaust denitrating system according to claim 1, it is characterised in that：The baffle (611) Lower end be connected with sponge.

5. a kind of diesel motor exhaust denitrating system according to claim 1, it is characterised in that：The helical gear (66) Side wall on be connected with rocking handle.