Mine monorail hoist vehicle tail gas treatment device

Abstract

The utility model provides a kind of mine monorail crane vehicle exhaust treatment device, including particle filter and chemical reaction section, further including particle pre-filter, the particle pre-filter is set before the particle filter, the particle pre-filter is horizontally extended cylindrical, the inside of the particle pre-filter is provided with internal thread, a plurality of dust filter holes are provided in the bottom side of the particle pre-filter, the plurality of dust filter holes are arranged between adjacent internal thread.Further, the front end and the rear end of the particle pre-filter are provided with taper for transition.Further, the top end of the dust filter hole is larger than the aperture of bottom end.Further, dust collection box is provided below the particle pre-filter.The mine monorail crane vehicle exhaust treatment device provided by the utility model sets particle pre-filter before particle filter, reduces the work burden of particle filter, can effectively reduce the replacement frequency of particle filter, and will not affect the normal progress of tail gas treatment.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to an exhaust gas treatment device for a mining monorail crane. Background Technology

[0002] Monorail cranes use specially designed I-beams suspended above the tunnel as rails, featuring high traction and strong climbing ability, and are widely used in various mining areas. Monorail crane locomotives generally use diesel engines. Diesel engine exhaust contains carbon monoxide (CO), hydrocarbons (CmHn), particulate matter, and nitrogen oxides (NOx). Existing diesel engine exhaust treatment technologies involve oxidation catalysis, particulate filtration, and catalytic reduction of nitrogen oxides. Among these, catalytic reduction of nitrogen oxides is the most important. Because diesel engine exhaust contains a relatively high amount of particulate matter, it is filtered before catalytic reduction of nitrogen oxides. Due to the relatively high particulate matter content in diesel engine exhaust, the particulate filter becomes clogged with particulate matter after a period of time. As a necessary component for exhaust gas, a clogged particulate filter will inevitably affect the flow and treatment of exhaust gas, necessitating replacement. Therefore, particulate filters must be replaced frequently, and the diesel engine must be stopped during replacement, thus affecting operating efficiency.

[0003] This invention aims to provide a tail gas treatment device for mining monorail cranes, which can effectively reduce the frequency of particulate filter replacement without affecting the normal operation of tail gas treatment. Utility Model Content

[0004] This invention aims to provide a tail gas treatment device for mining monorail cranes, which can effectively reduce the frequency of particulate filter replacement without affecting the normal operation of tail gas treatment.

[0005] This utility model provides a tail gas treatment device for a mining monorail crane, including a particulate filter and a chemical reaction section, and also includes a pre-particulate filter. The pre-particulate filter is arranged before the particulate filter and is a horizontally extending cylinder. The inner side of the pre-particulate filter is provided with internal threads, and multiple dust filter holes are provided on the bottom side of the pre-particulate filter. The multiple dust filter holes are arranged between adjacent internal threads.

[0006] Furthermore, tapered sections for transition are provided at the front and rear ends of the particle pre-filter.

[0007] Furthermore, the diameter of the top end of the dust filter hole is larger than the diameter of the bottom end.

[0008] Furthermore, a dust collection box is provided below the particle pre-filter.

[0009] Furthermore, a protrusion is provided on the internal thread on the bottom side of the pre-filter.

[0010] Furthermore, a plurality of the particle pre-filters are provided before the particle filter.

[0011] The exhaust gas treatment device for mining monorail cranes provided by this utility model reduces the workload of the particulate filter by setting a pre-filter before the particulate filter, which can effectively reduce the replacement frequency of the particulate filter without affecting the normal operation of exhaust gas treatment. Attached Figure Description

[0012] Figure 1 The diagram shows the setup of the exhaust gas treatment device for a mining monorail crane provided in this embodiment of the present invention.

[0013] Figure 2 The diagram shown is a structural schematic of a pre-filter for particles according to one embodiment of the present invention.

[0014] Figure 3 As shown Figure 2 A detailed structural diagram of the pre-particle filter in the illustrated embodiment.

[0015] Figure 4 The diagram shown is a detailed structural schematic of a pre-filter for particles according to another embodiment of the present invention.

[0016] Figure label:

[0017] 1: Pre-filter for particulate matter; 2: Particulate filter; 3: Chemical reaction section;

[0018] 11: Internal thread; 111: Protrusion; 12: Tapered part; 13: Dust collection box; 14: Dust filter hole; 141: Top end; 142: Bottom end. Detailed Implementation

[0019] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0020] Diesel engine exhaust contains carbon monoxide (CO), hydrocarbons (CmHn), particulate matter, and nitrogen oxides (NOx). Existing diesel engine exhaust treatment technologies involve oxidation catalysis, particulate filtration, and catalytic reduction of nitrogen oxides. Among these, catalytic reduction of nitrogen oxides is the most crucial. Because diesel engine exhaust contains a relatively high amount of particulate matter, it is filtered before catalytic reduction of nitrogen oxides. Figure 1 The diagram shows the installation of the exhaust gas treatment device for a mining monorail crane provided in an embodiment of this utility model. Figure 1As shown in the figure, the exhaust gas treatment device for a mining monorail crane provided in this embodiment includes a pre-particle filter 1, a particulate filter 2, and a chemical reaction section 3. The pre-particle filter 1 is installed before the particulate filter 2 to perform preliminary filtration of particulate matter, thereby reducing the burden on the particulate filter 2 and thus reducing the frequency of replacement of the particulate filter 2.

[0021] Figure 2 The diagram shown is a structural schematic of a pre-filter for particles according to one embodiment of the present invention. Figure 3 As shown Figure 2 A detailed structural schematic diagram of the pre-filter for particulate matter in the illustrated embodiment. (See attached diagram.) Figure 2 As shown, the pre-filter 1 is a horizontally extending cylinder. An internal thread 11 is provided on the inner side of the pre-filter 1, and multiple dust filter holes 14 are provided on the bottom side of the pre-filter 1, with the multiple dust filter holes 14 arranged between adjacent internal threads 11. A dust collection box 13 is provided below the pre-filter 1.

[0022] The exhaust gas contains a large amount of particulate matter. The internal thread 11 provided inside the particulate pre-filter 1 increases the surface roughness of the inside of the particulate pre-filter 1, which facilitates the deposition of particulate matter. On the other hand, the internal thread 11 forms a spiral guide thread, which helps to guide the airflow along the internal thread 11 in a spiral manner. While guiding the airflow along the internal thread 11 in a spiral manner, the contact area between the airflow and the internal thread is significantly increased, thereby further increasing the chance of particulate matter being deposited on the internal thread 11.

[0023] The particles deposited at the bottom of the pre-filter 1 are subject to both gravity and the pressure of the airflow within the pre-filter 1, allowing them to pass through the dust filter holes 14 into the dust collection box 13 located below the pre-filter 1. The dust filter holes 14 increase the roughness of the inner surface of the pre-filter 1, which is inherently beneficial for particle deposition. Furthermore, as... Figure 3 As shown, the diameter of the top 141 of the dust filter hole 14 is larger than the diameter of the bottom 142. Since particulate matter has a tendency to enter the dust collection box 13, by setting the diameter of the top 141 of the dust filter hole 14 to be larger than the diameter of the bottom 142, the difficulty for particulate matter in the dust collection box 13 to enter the pre-particle filter 1 is further increased, and the possibility of particulate matter entering the pre-particle filter 1 from the dust collection box 13 is further reduced.

[0024] In this embodiment of the invention, the internal thread 11 is located on the inner side of the pre-filter 1, thus preventing significant blockage of the airflow. Therefore, there are no sudden pressure changes, and the normal flow of the exhaust gas is not affected. After the dust is filtered by the pre-filter 1, the dust filtration burden on the particulate filter 2 is greatly reduced, the possibility of the particulate filter 2 becoming clogged is significantly reduced, and the possibility of airflow being obstructed due to blockage of the particulate filter 2 is also greatly reduced. To further smooth the airflow, such as... Figure 2 As shown, tapered sections 12 for transition are provided at the front and rear ends of the particle pre-filter 1.

[0025] Figure 4 The diagram shown is a detailed structural schematic of a pre-filter for particles according to another embodiment of the present invention. Further, as... Figure 4 As shown, a protrusion 111 is provided on the internal thread 11 on the bottom side of the particulate pre-filter 1 to further improve the ability of the bottom internal thread 11 to capture and intercept particulate matter.

[0026] In this embodiment of the invention, the particulate matter captured by the pre-filter 1 is mainly concentrated in the dust collection box 13. The dust collection box 13 has a large space and takes a long time to fill; therefore, it requires cleaning only after a longer period of use, thus reducing the frequency of replacement and cleaning. On the other hand, because the pre-filter 1 captures a portion of the particulate matter, the dust collection burden on the particulate filter 2 is greatly reduced, thereby extending the service life of the particulate filter 2 and reducing the replacement frequency. To further improve the performance of the pre-filter 1 and reduce the dust collection burden on the particulate filter 2, multiple pre-filters 1 can be installed before the particulate filter 2.

[0027] The exhaust gas treatment device for mining monorail cranes provided by this utility model reduces the workload of the particulate filter by setting a pre-filter before the particulate filter, which can effectively reduce the replacement frequency of the particulate filter without affecting the normal operation of exhaust gas treatment.

[0028] In the description of this utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" and their orientation or positional relationships are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A mine monorail crane exhaust gas treatment device, comprising a particulate filter and a chemical reaction section, characterized in that The exhaust gas treatment device for the mining monorail crane also includes: A pre-filter for particles is disposed before the particle filter. The pre-filter for particles is a horizontally extending cylinder. The inner side of the pre-filter for particles is provided with internal threads. Multiple dust filter holes are provided on the bottom side of the pre-filter for particles, and the multiple dust filter holes are disposed between adjacent internal threads.

2. The exhaust gas treatment device for a mining monorail crane according to claim 1, characterized in that, The front and rear ends of the pre-filter for particle separation are provided with tapered sections for transition.

3. The exhaust gas treatment device for a mining monorail crane according to claim 1, characterized in that, The diameter of the top of the dust filter hole is larger than the diameter of the bottom hole.

4. The exhaust gas treatment device for a mining monorail crane according to claim 1, characterized in that, A dust collection box is provided below the particle pre-filter.

5. The exhaust gas treatment device for a mining monorail crane according to claim 1, characterized in that, A protrusion is provided on the internal thread on the bottom side of the particle pre-filter.

6. The exhaust gas treatment device for a mining monorail crane according to claim 1, characterized in that, A plurality of pre-filters for particles are provided before the particle filter.

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