Air filter device with waste gas drainage function

Abstract

The invention discloses an air filter device with waste gas drainage, which relates to the technical field of air filters and comprises an air filter, an air inlet of the air filter is connected with a primary air inlet pipe, an air outlet of the air filter is connected with an air inlet of an engine supercharger through a secondary air inlet pipe, and an air outlet of the engine supercharger is connected with an exhaust pipe. The primary gas inlet pipe is provided with a mechanical heating filter screen, and the mechanical heating filter screen is communicated with the exhaust pipe through a waste gas inlet drainage pipe and is used for introducing high-temperature waste gas; the waste gas after heat exchange is discharged through the waste gas degassing drainage pipe; the mechanical heating filter screen comprises at least two rows of cross-shaped star-shaped column tubes which are arranged in a staggered mode, a hollow tube used for conveying waste gas is arranged in the center of each cross-shaped star-shaped column tube, and the outer wall of each cross-shaped star-shaped column tube is a concave arc-shaped heat exchange face. Engine waste gas is directly utilized for heat dissipation, through a mechanical filtering structure, air inlet snow melting and water removal are achieved during operation under the snowstorm condition, and the risk that an air filter of an engine is blocked by snowstorm is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air filters, and more specifically, to an air filter device with exhaust gas diversion. Background Art

[0002] With the frequent occurrence of natural disasters such as heavy snowstorms, equipment operates under harsh conditions, and the engine air filter is easily blocked by heavy snow, resulting in the engine being unable to work properly.

[0003] Currently, there are two traditional solutions. One is to set up a heating device or auxiliary heating equipment in the air filter to melt snow and remove ice. However, with the use of multiple media for heat exchange, the overall heat exchange efficiency is low. At the same time, the snow water has entered the interior of the air filter, and continuous operation in heavy snow weather will cause the filter element to be contaminated and damp, resulting in the air filter being unable to operate normally. The other is to lead the air filter intake to a place where snow and wind are not easily accessible, such as inside the vehicle. However, this method is often restricted by the vehicle structure and cannot be led to an ideal position to achieve the desired effect. Therefore, in the face of harsh natural disasters such as heavy snowstorms, how to prevent the air filter from being blocked by snow and wind is an urgent problem to be solved. Summary of the Invention

[0004] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide an air filter device with exhaust gas diversion, which has the function of heating and melting snow, ensures the engine intake air demand, is applicable to railway mobile equipment such as railway infrastructure maintenance equipment and diesel shunting locomotives, and can overcome the operation in heavy snow weather and prevent the air filter from being blocked by snow and wind.

[0005] To achieve the above object, the technical solution adopted by the present invention is: an air filter device with exhaust gas diversion, including an air filter. The intake port of the air filter is connected to a primary intake pipe, and the outlet port of the air filter is connected to the intake port of the engine supercharger through a secondary intake pipe. The outlet port of the engine supercharger is connected to an exhaust pipe. The primary intake pipe is provided with a mechanical heating filter screen, which is communicated with the exhaust pipe through an exhaust gas intake diversion pipe for introducing high-temperature exhaust gas; and the exhaust gas after heat exchange is discharged through an exhaust gas degassing diversion pipe. The mechanical heating filter screen includes at least two rows of cross-star-shaped column pipes arranged in a staggered manner. The center of the cross-star-shaped column pipe is a hollow pipe for conveying exhaust gas, and the outer wall of the cross-star-shaped column pipe is an inwardly concave arc-shaped heat exchange surface.

[0006] On the basis of the above technical solution, a spindle-shaped cavity for air flow is formed between every two adjacent rows of cross-star-shaped column pipes corresponding in a staggered manner.

[0007] On the basis of the above technical solution, a housing is covered outside the intake end of the primary intake pipe. The housing is provided with an intake port for introducing air, and the mechanical heating filter screen is located inside the housing and opposite to the intake port.

[0008] On the basis of the above technical solution, a rain-proof cap is provided at the top of the housing, and an air inlet is provided at the bottom of the housing.

[0009] On the basis of the above technical solution, a temperature sensor is provided inside the housing.

[0010] On the basis of the above technical solution, an exhaust gas cut-off valve is provided at the connection between the exhaust pipe and the exhaust gas inlet diversion pipe.

[0011] On the basis of the above technical solution, a control box is further included, and the control box is electrically connected to the temperature sensor and the exhaust gas cut-off valve respectively.

[0012] On the basis of the above technical solution, a muffler connected to the exhaust pipe is further included.

[0013] On the basis of the above technical solution, the cross-star-shaped column is made of aluminum or copper material, and the inner diameter of the hollow pipe is Φ10mm - 16mm.

[0014] The beneficial effects of the present invention are as follows:

[0015] The invention directly utilizes the heat dissipation of the engine exhaust gas, and through a mechanical filtration structure, reduces the risk of snow blockage of the engine air filter during operation under blizzard conditions, and realizes air intake for snow melting and water removal.

[0016] The air filter device with exhaust gas diversion of the present invention adopts an air-air heat exchange mode, reduces the need to configure an additional heating system, improves the snow melting and water removal efficiency, improves the availability and economy of the power system, and through simulation verification, improves the continuous operation ability of the whole machine, and the economy is improved by more than 60%. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the air filter device with exhaust gas diversion in the embodiment of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the mechanical heating filter screen in the embodiment of the present invention;

[0019] Figure 3 It is a working principle diagram of the mechanical heating filter screen in the embodiment of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the cross-star-shaped column pipe in the embodiment of the present invention.

[0021] Reference Signs:

[0022] 1. Air filter, 2. Secondary intake pipe, 3. Engine supercharger, 4. Exhaust pipe, 5. Muffler, 6. Exhaust gas cut-off valve, 7. Exhaust gas intake diversion pipe, 8. Mechanical heating filter screen, 9. Rainproof cap, 10. Housing, 11. Primary intake pipe, 12. Exhaust gas degassing diversion pipe, 13. Temperature sensor, 14. Control box, 15. Cross-star column pipe, 16. Hollow pipe, 17. Arc-shaped heat exchange surface, 18. Spindle-shaped cavity. Detailed implementation mode

[0023] The embodiments of the present invention will be described in detail below. The illustrated embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout.

[0024] In the description of the present invention, it should be noted that for orientation terms, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationships are based on the orientation or position relationships shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0025] The technical solutions and their beneficial effects of the present invention will be made clearer and more definite by further describing the specific implementation modes of the present invention in conjunction with the accompanying drawings of the specification. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] See Figures 1 to 2 As shown, the embodiment of the present invention provides an air filter device with exhaust gas diversion, including an air filter 1. The intake port of the air filter 1 is connected to a primary intake pipe 11. The outlet port of the air filter 1 is connected to the intake port of an engine supercharger 3 through a secondary intake pipe 2. The outlet port of the engine supercharger 3 is connected to an exhaust pipe 4. A mechanical heating filter screen 8 is provided on the primary intake pipe 11. The mechanical heating filter screen 8 is communicated with the exhaust pipe 4 through an exhaust gas intake diversion pipe 7 for introducing high-temperature exhaust gas; and the exhaust gas after heat exchange is discharged through an exhaust gas degassing diversion pipe 12. Specifically, the air filter device with exhaust gas diversion further includes a muffler 5 connected to the exhaust pipe 4.

[0027] See Figures 3 to 4As shown in the figure, the mechanical heating filter screen 8 includes two rows of cross-star column pipes 15 arranged in a staggered manner. At the center of the cross-star column pipe 15 is a hollow pipe 16 for conveying waste gas, and the outer wall of the cross-star column pipe 15 is an inwardly concave arc-shaped heat exchange surface 17. Specifically, the cross-star column is made of aluminum or copper material, and the inner diameter of the hollow pipe 16 is Φ10mm - 16mm.

[0028] A shuttle-shaped cavity 18 for air flow is formed between two adjacent rows of cross-star column pipes 15 corresponding to each other in a staggered manner. The two ends of the shuttle-shaped cavity are air ports, and the cavity wall is arc-shaped to increase the contact area with air and block snow and water. A housing 10 is provided outside the intake end of the primary intake pipe 11. The housing 10 is provided with an air inlet for introducing air. The mechanical heating filter screen 8 is located inside the housing 10 and opposite to the air inlet. A rain cap 9 is provided at the top of the housing 10, and an air inlet is provided at the bottom of the housing 10.

[0029] See Figure 1 As shown in the figure, a temperature sensor 13 is provided inside the housing 10. An exhaust gas cut-off valve 6 is provided at the connection between the exhaust pipe 4 and the exhaust gas intake diversion pipe 7. The air filter device with exhaust gas diversion further includes a control box 14, and the control box 14 is electrically connected to the temperature sensor 13 and the exhaust gas cut-off valve 6 respectively. In this embodiment, the housing integrates the temperature sensor, and the sensed signal is transmitted to the control box. When the air temperature reaches above 25°C, the control box controls the exhaust gas flow through the exhaust gas cut-off valve. The temperature sensor, the control box, and the exhaust gas cut-off valve are connected by wire.

[0030] The present invention diverts the exhaust gas through the exhaust gas intake diversion pipe, uses the mechanical heating filter screen to output heat and heat the air, and then discharges the exhaust gas through the exhaust gas degassing diversion pipe. The air temperature is detected by the temperature sensor, the control box performs logical judgment, and the exhaust gas flow is controlled by the exhaust gas cut-off valve. When operating under heavy snow conditions, it reduces the risk of intake snow melting and water removal, and avoids the risk of heavy snow blocking the engine air filter.

[0031] In the description of the specification, the description with reference to terms such as "an embodiment", "preferably", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. The schematic description of the above terms in this specification does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The present invention is not limited to the above embodiments. For those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the present invention. The content not described in detail in this specification belongs to the well-known prior art of those skilled in the art.

Claims

1. An air filter device with waste gas diversion, comprising an air filter (1), an inlet of the air filter (1) is connected with a primary intake pipe (11), an outlet of the air filter (1) is connected with an inlet of an engine supercharger (3) through a secondary intake pipe (2), an outlet of the engine supercharger (3) is connected with an exhaust pipe (4), and it is characterized in that: The primary intake pipe (11) is provided with a mechanical heating filter screen (8), which is communicated with the exhaust pipe (4) through an exhaust gas intake diversion pipe (7) for introducing high-temperature exhaust gas; and the heat-exchanged exhaust gas is discharged through an exhaust gas degassing diversion pipe (12). The mechanical heating filter screen (8) includes at least two rows of cross-star-shaped column pipes (15) arranged in a staggered manner. The center of the cross-star-shaped column pipe (15) is a hollow pipe (16) for conveying exhaust gas, and the outer wall of the cross-star-shaped column pipe (15) is an inwardly concave arc-shaped heat exchange surface (17).

2. The air filter device with waste gas diversion according to claim 1, characterized in that: A shuttle-shaped cavity (18) for air flow is formed between every two adjacent rows of cross-star-shaped column pipes (15) arranged in a staggered manner and corresponding to each other.

3. The air filter device with exhaust gas diversion according to claim 1, characterized in that: A housing (10) is sleeved outside the intake end of the primary intake pipe (11). The housing (10) is provided with an air inlet for introducing air, and the mechanical heating filter screen (8) is located inside the housing (10) and opposite to the air inlet.

4. The air filter device with waste gas diversion according to claim 3, characterized in that: A rain cap (9) is arranged at the top of the housing (10), and an air inlet is arranged at the bottom of the housing (10).

5. The air filter device with exhaust gas diversion according to claim 3, characterized in that: A temperature sensor (13) is arranged inside the housing (10).

6. The air filter device with exhaust gas diversion as described in claim 5, characterized in that: An exhaust gas cut-off valve (6) is arranged at the connection between the exhaust pipe (4) and the exhaust gas intake diversion pipe (7).

7. The air filter device with waste gas diversion according to claim 6, characterized in that: It further includes a control box (14), and the control box (14) is electrically connected to the temperature sensor (13) and the exhaust gas cut-off valve (6) respectively.

8. The air filter device with exhaust gas diversion according to claim 1, characterized in that: It further includes a muffler (5) connected to the exhaust pipe (4).

9. The air filter device with exhaust gas diversion as described in claim 1, characterized in that: The cross-star-shaped column is made of aluminum or copper material, and the inner diameter of the hollow pipe (16) is Φ10mm - 16mm.

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