Purifier assembly

Abstract

The utility model relates to the field of purifiers, in particular to a purifier assembly which comprises an outer cylinder and an inner pipe assembly. The outer cylinder is of a cylindrical structure with two closed ends and is provided with a first end and a second end, the inner pipe assembly is inserted into the outer cylinder from the first end of the outer cylinder, a baffling space is formed between the inner pipe assembly and the inner wall of the second end of the outer cylinder, and the inner pipe assembly and the inner wall of the outer cylinder form an annular backflow channel; and an exhaust side pipe is arranged on the side wall of the first end of the outer cylinder. Compared with the prior art, the double-layer structure is adopted, air inlet and outlet on the same side can be achieved, compared with a box type purifier, the cost is lower, and the problem of high cost caused by complex parts and processes is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of purifier, concretely relates to a purifier assembly. BACKGROUND

[0002] The traditional diesel engine tail gas purifier generally adopts a circular tube structure design, with two ends as the air inlet and air outlet respectively, and the inside filled with catalyst. This classic structure can efficiently realize tail gas purification under normal working conditions, with the advantages of compact structure, stable purification effect, etc.

[0003] However, in some special application scenarios, such as the narrow engine room space of a ship, the limited installation area of a tunnel construction device, and some special vehicles with special requirements for equipment layout, the demand for purifier same side air inlet and outlet arises at this time. This special demand is due to factors such as extremely limited space layout and special equipment installation position, making the traditional two-end air inlet and outlet circular tube purifier unable to meet the use requirements.

[0004] At present, the tail gas purifiers on the market that can realize the same side air inlet and outlet function mostly adopt a box structure. Although this type of box purifier can solve the problem of same side air inlet and outlet, it brings new challenges. On the one hand, the box structure involves more complex components and processes in the design and manufacturing process, resulting in high manufacturing costs. On the other hand, compared with the circular tube purifier, the box structure has a larger volume, which not only increases the difficulty of equipment installation in a space-constrained scenario, but also limits its application on some diesel engine devices with strict space size requirements. SUMMARY

[0005] In view of the above, the purpose of the utility model is to provide a purifier assembly for the problems of the prior art.

[0006] The purifier assembly in the present solution comprises an outer cylinder and an inner tube assembly;

[0007] The outer cylinder is a cylindrical structure with closed ends, provided with a first end and a second end,

[0008] The inner tube assembly is inserted into the inner part of the outer cylinder from the first end of the outer cylinder, and a baffle space is formed between the inner tube assembly and the inner wall of the second end of the outer cylinder, and the inner tube assembly and the inner wall of the outer cylinder form an annular reflux channel;

[0009] The first end side wall of the outer cylinder is provided with an exhaust side pipe.

[0010] Further, the inner tube assembly comprises a straight pipe, a tapered pipe and an inner cylinder body connected in sequence, the outlet end of the straight pipe is a closed end, and there are a plurality of holes on the closed end of the straight pipe and the side wall adjacent to the closed end.

[0011] Further, the inner wall of the first end and the second end of the cylinder is provided with sound-absorbing cotton.

[0012] Further, the sound-absorbing cotton in the first end and the second end of the outer cylinder is provided with a first sound-absorbing hole plate.

[0013] Further, the annular reflux channel is provided with a second sound-absorbing hole plate.

[0014] Compared with the prior art, the application has the following advantages:

[0015] 1. The double-layer structure can realize same-side air inlet and outlet, and the cost is lower than that of the box-type purifier, avoiding the high cost problem caused by complex components and processes.

[0016] 2. Compared with the box-type structure, the volume is small, which is more suitable for scenes with tight installation space, reduces the difficulty of equipment installation, and can be applied to more diesel engine equipment with strict space size requirements.

[0017] 3. The sound-absorbing effect is good. In the scheme, the closed end of the straight pipe and the side wall near the closed end have a plurality of holes, which can change the airflow form and consume gas energy during gas flow, thereby playing a good sound-absorbing role and reducing the noise of equipment operation. The inner wall of the A end and the B end of the outer cylinder is provided with sound-absorbing cotton, and when the gas contacts the sound-absorbing cotton, the noise energy is absorbed and dissipated by the porous structure inside the sound-absorbing cotton, further reducing the noise of equipment operation. The sound-absorbing cotton in the A end and the B end of the outer cylinder is provided with a first sound-absorbing hole plate, which can protect the sound-absorbing cotton and consume gas energy to improve the sound-absorbing effect. The annular reflux channel is provided with a second sound-absorbing hole plate, which works with the first sound-absorbing hole plate and the sound-absorbing cotton to suppress noise in all directions from the whole process of gas entering, flowing inside and discharging, and the sound-absorbing effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a schematic diagram of the three-dimensional structure of the application;

[0019] Fig. 2 is a schematic diagram of the cross-sectional structure of the application;

[0020] Fig. 3 、 Fig. 4 is a schematic diagram of the three-dimensional cross-sectional structure of the application from different perspectives;

[0021] Fig. 5 is a schematic diagram of the three-dimensional cross-sectional structure of the inner tube assembly of the application;

[0022] The drawing label: outer cylinder 1, first end 10a, second end 10b, exhaust side pipe 2, straight pipe 3, tapered pipe 4, inner cylinder body 5, catalyst carrier 6, sound-absorbing cotton 7, first sound-absorbing hole plate 8, second sound-absorbing hole plate 9. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] With reference to Figs. 1-2 A purifier assembly adopts a double-layer structure and comprises an outer cylinder 1 and an inner tube assembly. The outer cylinder 1 is a cylinder structure with both ends closed and is provided with an A end and a B end. The inner tube assembly is inserted into the inner cylinder 1 from the A end of the outer cylinder 1, and a baffle space is formed between the inner tube assembly and the inner wall of the B end of the outer cylinder 1; the inner tube assembly and the inner wall of the outer cylinder 1 form an annular backflow channel. The A end side wall of the outer cylinder 1 is provided with an exhaust side pipe 2 for discharging the gas after purification. The gas enters the inner tube and then collides with the second end 10b of the outer cylinder 1 to start backflow, and finally is discharged from the exhaust side pipe 2. Such an inner-outer double-layer structure can realize the same-side entry and exit, and is relatively low in cost and small in size.

[0025] More specifically, the inner tube assembly comprises a straight tube 3, a tapered tube 4 and an inner cylinder body 5 connected in sequence. The straight tube 3 is inserted into the inner cylinder 1 from the A end of the outer cylinder 1 and is an initial channel for the gas to enter the purifier; the outlet end of the straight tube 3 is a closed end, and the closed end of the straight tube 3 and the side wall adjacent to the closed end are provided with a plurality of holes, which not only can make the gas uniformly distributed in the straight tube 3, but also can change the airflow form and consume the gas energy during the gas flow, thereby playing a good sound attenuation effect and reducing the equipment operation noise. The tapered tube 4 connects the straight tube 3 and the inner cylinder body 5. The inner cylinder body 5 is arranged in the outer cylinder 1 and has a diameter greater than that of the straight tube 3, thereby providing sufficient installation space for the catalyst carrier 6 and ensuring that the catalyst can fully play a purification effect and improve the gas purification efficiency.

[0026] The inner walls of the A end and the B end of the outer cylinder 1 are both provided with sound attenuation cotton 7. When the gas contacts the sound attenuation cotton 7, the noise energy is absorbed and dissipated by the porous structure inside the sound attenuation cotton 7, thereby further reducing the equipment operation noise.

[0027] The sound attenuation cotton 7 in front of the A end and the B end of the outer cylinder 1 is both provided with a first sound attenuation hole plate 8. The first sound attenuation hole plate 8 can not only play a protective role for the sound attenuation cotton 7 and prevent the high-speed gas flow from damaging the sound attenuation cotton 7, but also can consume the gas energy and improve the sound attenuation effect.

[0028] The second sound hole plate 9 is arranged on the annular return flow channel. The second sound hole plate 9 cooperates with the first sound hole plate 8 and the sound absorbing cotton 7 to comprehensively suppress noise from the whole process of gas entering, flowing inside and discharging.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A purifier assembly, characterized by: The outer cylinder (1) and the inner tube assembly; The outer cylinder (1) is a cylinder structure with closed two ends, provided with a first end (10a) and a second end (10b), The inner tube assembly is inserted into the outer cylinder (1) from the first end (10a) of the outer cylinder (1), and a baffle space is formed between the inner tube assembly and the inner wall of the second end (10b) of the outer cylinder (1), and the inner tube assembly and the inner wall of the outer cylinder (1) form an annular backflow channel. The side wall of the first end (10a) of the outer cylinder (1) is provided with an exhaust side pipe (2).

2. A purifier assembly according to claim 1, wherein: The inner tube assembly comprises a straight pipe (3), a taper pipe (4) and an inner cylinder body (5) connected in sequence, the outlet end of the straight pipe (3) is a closed end, and the closed end of the straight pipe (3) and the side wall near the closed end are provided with a plurality of holes.

3. A purifier assembly according to claim 2, wherein: The inner walls of the first end (10a) and the second end (10b) of the outer cylinder (1) are both provided with sound-absorbing cotton (7).

4. A purifier assembly according to claim 3, wherein: The first sound-absorbing hole plate (8) is arranged in front of the sound-absorbing cotton (7) of the first end (10a) and the second end (10b) of the outer cylinder (1).

5. The purifier assembly of claim 1, wherein: The annular backflow channel is provided with a second sound-absorbing hole plate (9).

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