Maintenance-free air inlet system of heavy truck

Abstract

The utility model relates to a maintenance-free air inlet system of a heavy truck, which comprises an air inlet flat pipe assembly, a back flushing filter system and an engine connecting pipe, the air inlet end of the back flushing filter system is connected with the air outlet end of the air inlet flat pipe assembly, and the air outlet end of the back flushing filter system is connected with the air inlet end of the engine connecting pipe. Differential pressure sensors are arranged at the air inlet end and the air outlet end of the blowback filtering system, and the differential pressure sensors and the blowback filtering system are connected with the whole vehicle controller; the blowback filtering system is provided with a sintered plate filter element, and a blowback pipeline is additionally arranged, so that the air inlet system achieves efficient filtering and maintenance-free functions.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle air intake systems, in particular to a maintenance-free air intake system for heavy trucks. Background Art

[0002] At present, the air intake systems of heavy-duty trucks usually use oil bath filters, desert filters, paper filters or a combination thereof. In environments with particularly high amounts of air dust, such as open-pit coal mines, fly ash sites, construction sites and other operating conditions, problems such as sand accumulation, poor filtration effect, large air intake resistance, and short filter element service life are prone to occur, requiring regular maintenance, resulting in increased operating costs. Utility Model Content

[0003] The purpose of this utility model is to address the deficiencies in the existing technology and thus provide a maintenance-free air intake system for heavy trucks. The sintered plate filter element in the backflush filtration system is filtered, and the sintered plate filter element is backflush cleaned through the backflush pipeline to achieve efficient filtration and maintenance-free.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A maintenance-free air intake system for a heavy truck comprises an air intake flat pipe assembly, a back-blowing filter system and an engine connecting pipe. The air intake end of the back-blowing filter system is connected to the air outlet end of the air intake flat pipe assembly, and the air outlet end of the back-blowing filter system is connected to the air intake end of the engine connecting pipe. The air intake end and the air outlet end of the back-blowing filter system are both provided with a pressure differential sensor, and the pressure differential sensor and the back-blowing filter system are both connected to a vehicle controller.

[0006] Preferably, the back-blowing filtration system includes a box body, a box cover, a sintered plate filter element and a back-blowing pipeline. The air inlet end is provided at one end of the box body, an opening is provided at the other end of the box body, and a box body fixing plate is provided at the periphery of the opening. The air outlet end is provided at one end of the box cover, an opening is provided at the other end of the box cover, and a box cover fixing plate is provided at the periphery of the opening. The box body fixing plate and the box cover fixing plate are detachably connected by bolts; a sintered plate filter element is provided in the box body, and a back-blowing pipeline is provided in the box cover.

[0007] Preferably, the sintered plate filter element is provided with a plurality of filter channels and a filter element mounting plate, the backflush pipeline is provided with a pipeline mounting plate, the backflush pipeline is inserted into the filter channel, and the filter element mounting plate and the pipeline mounting plate are connected to the box fixing plate and the box cover fixing plate by bolts.

[0008] Preferably, the back-blowing pipeline also includes an air supply pipeline, a back-blowing pulse solenoid valve and a back-blowing pipe. The air supply pipeline is provided with the back-blowing pulse solenoid valve. One end of the air supply pipeline is connected to the air cylinder through a pipeline, and the other end of the air supply pipeline is connected to the back-blowing pipe. The back-blowing pulse solenoid valve is connected to the vehicle controller.

[0009] Preferably, the number of the backflush pipes corresponds to the number of the filter channels, and the length of the backflush pipe is the same as the length of the filter channel. The backflush pipe is inserted into the filter channel, and the backflush pipe is provided with a plurality of blowing holes.

[0010] Preferably, an ash collecting hopper is provided at the lower end of the box body, the ash collecting hopper is funnel-shaped, the upper end of the ash collecting hopper is connected to the box body, and an ash discharge port is provided at the lower end of the ash collecting hopper, the ash discharge port is provided with an ash discharge electromagnetic ball valve, and the ash discharge electromagnetic ball valve is connected to the vehicle controller.

[0011] Preferably, a material meter is provided in the ash collecting hopper, and the material meter is connected to the vehicle controller.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] The back-flushing filtration system is equipped with a sintered plate filter element and a back-flushing pipeline is added to enable the air intake system to achieve high-efficiency filtration and maintenance-free functions;

[0014] Sintered plate filter elements have efficient dust removal capabilities, stable dust removal performance, and an extremely long service life. Compared with paper filter elements of the same specifications, they have a larger filtration area and filtration accuracy. Their rigid structure allows the backwash gas to act directly on the powder on the filter surface. Their high strength and toughness can withstand repeated backwashing, making their service life reach more than 10 years. When used in the intake system of heavy-duty trucks, they can achieve high-efficiency filtration and maintenance-free functions.

[0015] Pressure differential sensors are installed at the air inlet and air outlet of the back-flushing filtration system to determine whether the sintered plate filter element needs to be cleaned. When the pressure differential sensor detection value at the air inlet is large, while the pressure differential sensor detection value at the air outlet is small, it is determined that the sintered plate filter element is seriously dusted and needs to be cleaned. The vehicle controller controls the back-flushing pulse solenoid valve to connect the air supply pipeline with the back-flushing pipe for back-flushing cleaning. After cleaning, the accumulated dust falls into the dust collection hopper.

[0016] The ash hopper is equipped with a material meter to judge the ash accumulation capacity in the hopper. When the ash accumulation capacity is too large and needs to be cleaned, the vehicle controller controls the ash discharge electromagnetic ball valve to open, and the accumulated ash is discharged through the ash discharge port, which is fast and convenient to achieve automatic ash cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the back-flushing filtration system of the utility model;

[0019] Figure 3This is a schematic diagram of the structure of the sintered plate filter element of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the backflush pipeline of the utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the utility model.

[0022] Reference numerals

[0023] 1. Intake flat tube assembly; 2. Backflush filter system; 21. Box body; 211. Box body fixing plate; 212. Ash hopper; 213. Ash discharge port; 214. Ash discharge solenoid valve; 22. Box cover; 221. Box cover fixing plate; 23. Sintered plate filter element; 231. Filter channel; 232. Filter element mounting plate; 24. Backflush pipeline; 241. Pipeline mounting plate; 242. Air supply pipeline; 243. Backflush pulse solenoid valve; 244. Backflush pipe; 3. Engine connecting pipe. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] like Figure 1-Figure 5 As shown, a maintenance-free air intake system for heavy trucks includes an air intake flat pipe assembly 1, a back-blowing filter system 2 and an engine connecting pipe 3. The air intake end of the back-blowing filter system 2 is connected to the air outlet end of the air intake flat pipe assembly 1, and the air outlet end of the back-blowing filter system 2 is connected to the air intake end of the engine connecting pipe 3. The air intake end and the air outlet end of the back-blowing filter system 2 are both provided with pressure differential sensors, and the pressure differential sensor and the back-blowing filter system 2 are both connected to the vehicle controller.

[0026] The back-flushing filtration system 2 includes a box body 21, a box cover 22, a sintered plate filter element 23 and a back-flushing pipeline 24. An air inlet end is provided at one end of the box body 21, an opening is provided at the other end of the box body 21, and a box body fixing plate 211 is provided around the opening. An air outlet end is provided at one end of the box cover 22, an opening is provided at the other end of the box cover 22, and a box cover fixing plate 221 is provided around the opening. The box body fixing plate 211 and the box cover fixing plate 221 are detachably connected by bolts; a sintered plate filter element 23 is provided in the box body 21, and a back-flushing pipeline 24 is provided in the box cover 22.

[0027] The sintered plate filter element 23 is provided with a plurality of filter channels 231 and a filter element mounting plate 232. The backflush pipeline 24 is provided with a pipeline mounting plate 241. The backflush pipeline 24 is inserted into the filter channel 231. The filter element mounting plate 232 and the pipeline mounting plate 241 are connected to the box body fixing plate 211 and the box cover fixing plate 221 by bolts.

[0028] The back-blowing pipeline 24 also includes an air supply pipeline 242, a back-blowing pulse solenoid valve 243 and a back-blowing pipe 244. The air supply pipeline 242 is provided with a back-blowing pulse solenoid valve 243. One end of the air supply pipeline 242 is connected to the air storage cylinder through a pipeline, and the other end of the air supply pipeline 242 is connected to the back-blowing pipe 244. The back-blowing pulse solenoid valve 243 is connected to the vehicle controller.

[0029] The number of backflush tubes 244 corresponds to the number of filter channels 231 , and the length of the backflush tubes 244 is the same as the length of the filter channels 231 . The backflush tubes 244 are inserted into the filter channels 231 and are provided with a plurality of air holes.

[0030] Pressure differential sensors are set at the air inlet and air outlet ends of the back-blowing filtration system 2 to determine whether the sintered plate filter element 23 needs to be cleaned. When the detection value of the pressure differential sensor at the air inlet end is large, and the detection value of the pressure differential sensor at the air outlet end is small, it is determined that the sintered plate filter element is seriously dusty and needs to be cleaned. The back-blowing pulse solenoid valve 243 is controlled by the vehicle controller to connect the air supply pipe 242 with the back-blowing pipe 244 for back-blowing cleaning. The cleaned accumulated dust falls into the dust collecting hopper 212.

[0031] An ash collecting hopper 212 is provided at the lower end of the box body 21. The ash collecting hopper 212 is funnel-shaped. The upper end of the ash collecting hopper 212 is connected to the box body 21. An ash discharge port 213 is provided at the lower end of the ash collecting hopper 212. The ash discharge port 213 is provided with an ash discharge electromagnetic ball valve 214. The ash discharge electromagnetic ball valve 214 is connected to the vehicle controller.

[0032] A material meter is provided in the dust collecting hopper 212 and is connected to the vehicle controller.

[0033] The ash hopper 212 is provided with a material meter to judge the ash accumulation capacity in the ash hopper 212. When the ash accumulation capacity is too large and needs to be cleaned, the vehicle controller controls the ash discharge electromagnetic ball valve 214 to open, and the ash is discharged through the ash discharge port 213, which is fast and convenient, achieving automatic ash cleaning.

[0034] The workflow of this utility model:

[0035] The dust-laden gas enters the back-flushing filter system 2 from the air inlet flat tube assembly 1 through the air inlet end of the back-flushing filter system 2. The dust-laden gas is filtered by the sintered plate filter element 23. When the dust-laden gas passes through the integral sintered plate filter element 23, the filter material at the pore position of the filter element will retain the dust, thereby filtering the dust-laden gas.

[0036] Then the clean gas is transported from the gas outlet of the back-blowing filter system 2 to the engine connecting pipe 3, thereby providing clean gas to the engine.

[0037] Pressure differential sensors are provided at the air inlet and air outlet of the back-flushing filtration system 2 to determine whether the sintered plate filter element 23 needs to be cleaned. When the pressure differential sensor detection value at the air inlet is large, while the pressure differential sensor detection value at the air outlet is small, it is determined that the sintered plate filter element is seriously dusted and needs to be cleaned. The vehicle controller controls the back-flushing pulse solenoid valve 243 to connect the air supply pipe 242 with the back-flushing pipe 244 for back-flushing cleaning. After cleaning, the accumulated dust falls into the dust collecting hopper 212.

[0038] The ash hopper 212 is provided with a material meter to judge the ash accumulation capacity in the ash hopper 212. When the ash accumulation capacity is too large and needs to be cleaned, the vehicle controller controls the ash discharge electromagnetic ball valve 214 to open, and the ash is discharged through the ash discharge port 213, which is fast and convenient, achieving automatic ash cleaning.

[0039] In a feasible embodiment, the air tank is provided with a pressure sensor. When the pressure of the air tank is insufficient, the vehicle controller controls the engine air pump to operate and pressurize the air tank.

Claims

1. A maintenance-free air intake system for heavy trucks, characterized in that: The invention comprises an air intake flat pipe assembly (1), a back-blowing filter system (2) and an engine connecting pipe (3), wherein the air intake end of the back-blowing filter system (2) is connected to the air outlet end of the air intake flat pipe assembly (1), the air outlet end of the back-blowing filter system (2) is connected to the air intake end of the engine connecting pipe (3), the air intake end and the air outlet end of the back-blowing filter system (2) are both provided with a pressure difference sensor, and the pressure difference sensor and the back-blowing filter system (2) are both connected to a vehicle controller.

2. The maintenance-free air intake system for heavy trucks according to claim 1 is characterized in that: The back-blowing filtration system (2) comprises a box body (21), a box cover (22), a sintered plate filter element (23) and a back-blowing pipeline (24); the box body (21) is provided with the air inlet end at one end, the box body (21) is provided with an opening at the other end, and a box body fixing plate (211) is provided on the periphery of the opening; the box cover (22) is provided with the air outlet end at one end, the box cover (22) is provided with an opening at the other end, and a box cover fixing plate (221) is provided on the periphery of the opening; the box body fixing plate (211) and the box cover fixing plate (221) are detachably connected by bolts; the box body (21) is provided with the sintered plate filter element (23), and the box cover (22) is provided with the back-blowing pipeline (24).

3. The maintenance-free air intake system for heavy trucks according to claim 2 is characterized in that: The sintered plate filter element (23) is provided with a plurality of filter channels (231) and a filter element mounting plate (232); the backflush pipeline (24) is provided with a pipeline mounting plate (241); the backflush pipeline (24) is inserted into the filter channel (231); the filter element mounting plate (232) and the pipeline mounting plate (241) are connected to the box body fixing plate (211) and the box cover fixing plate (221) by bolts.

4. The maintenance-free air intake system for heavy trucks according to claim 3 is characterized in that: The back-blowing pipeline (24) further comprises an air supply pipeline (242), a back-blowing pulse solenoid valve (243) and a back-blowing pipe (244); the air supply pipeline (242) is provided with the back-blowing pulse solenoid valve (243); one end of the air supply pipeline (242) is connected to an air storage cylinder via a pipeline; the other end of the air supply pipeline (242) is connected to the back-blowing pipe (244); and the back-blowing pulse solenoid valve (243) is connected to a vehicle controller.

5. The maintenance-free air intake system for heavy trucks according to claim 4 is characterized in that: The number of the back-blowing pipes (244) corresponds to the number of the filtering channels (231), and the length of the back-blowing pipes (244) is the same as the length of the filtering channels (231). The back-blowing pipes (244) are inserted into the filtering channels (231), and the back-blowing pipes (244) are provided with a plurality of blowing holes.

6. The maintenance-free air intake system for heavy trucks according to claim 4 is characterized in that: An ash collecting hopper (212) is provided at the lower end of the box body (21), the ash collecting hopper (212) is funnel-shaped, the upper end of the ash collecting hopper (212) is connected to the box body (21), and an ash discharge port (213) is provided at the lower end of the ash collecting hopper (212), the ash discharge port (213) is provided with an ash discharge electromagnetic ball valve (214), and the ash discharge electromagnetic ball valve (214) is connected to the vehicle controller.

7. The maintenance-free air intake system for heavy trucks according to claim 6 is characterized in that: A material meter is provided in the ash collecting hopper (212), and the material meter is connected to the vehicle controller.

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