Fuel oil system of mining heavy truck and mining heavy truck

Abstract

The utility model discloses a fuel oil system of a mining heavy truck and the mining heavy truck, which are applied to the mining heavy truck. Comprising a fuel tank and a PT fuel pump, an oil outlet of the fuel tank is communicated with an oil inlet of the PT fuel pump through an oil inlet pipeline, and an oil outlet of the PT fuel pump is communicated with an oil inlet of the fuel tank through a residual oil return pipe; a fuel oil pre-supply pump and a fuel oil filter are arranged on the oil inlet pipeline, and the fuel oil filter comprises a fuel oil filter element; a target fuel oil pipeline is further arranged between the oil outlet of the fuel oil filter element and the residual oil return pipe, and an electromagnetic valve is arranged on the target fuel oil pipeline; and the electromagnetic valve is used for controlling the on-off of the target fuel oil pipeline. The technical problem that in the prior art, fuel oil is wasted in the exhaust process of an engine is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine fuel exhaust, in particular to a fuel system of a mining heavy truck and a mining heavy truck. Background Art

[0002] The Belaz 75131 mining heavy truck engine needs to replace the fuel filter during the factory maintenance. The fuel filter is connected in series on the pipeline between the fuel PT pump and the fuel tank. Its function is to remove solid debris such as iron oxide and dust contained in the fuel, prevent the fuel system from being blocked (especially the fuel injector), reduce mechanical wear, ensure stable operation of the engine, and improve reliability. In the process of replacing the fuel filter, air will inevitably enter the fuel pipeline and fuel filter. The engine fuel exhaust is to exhaust the air in the engine fuel system to ensure the smooth operation of the engine.

[0003] The fuel exhaust operation of the BelAZ 75131 heavy mining truck engine uses a fuel pre-supply pump to transport fuel, and the exhaust operation is performed by loosening the fuel pipe joints.

[0004] During the engine fuel exhaust process, one maintenance personnel is required to operate the fuel pre-supply pump in the cab, and one maintenance personnel is required to loosen the fuel pipe joints to perform the engine fuel exhaust operation. In addition, due to the noisy working environment at the maintenance site, another maintenance personnel is required to transmit information to ensure that the communication information of the engine fuel exhaust operation is transmitted correctly.

[0005] During the exhaust process of the engine fuel, fuel is sprayed out from the exhaust joint, causing maintenance workers to be frequently splashed with the sprayed fuel. The sprayed fuel covers the engine exhaust pipe and surrounding structural parts, and the ground in the work area is also covered with the sprayed fuel. Maintenance workers who have been engaged in maintenance and repair work for a long time will suffer physical injuries due to fuel splashing on their bodies, which is not conducive to the health of maintenance workers; the maintenance work environment is also polluted by fuel splashing, and it takes a lot of time and manpower to clean up the work site after the work is completed, which increases the cost of maintenance and the workload of operators. Cleaning the site cannot completely achieve "zero" environmental pollution. The use of industrial detergents will cause environmental pollution again, and industrial machine cleaning cloths also need to be professionally recycled.

[0006] The amount of fuel ejected during the engine fuel exhaust process is about 2-3 liters. Mining heavy trucks need to maintain engines about 500 times a year, and the annual fuel waste reaches 1000-1500 liters, causing great waste for the company. Utility Model Content

[0007] The purpose of the utility model is to provide a fuel system for a mining heavy truck and a mining heavy truck in order to solve at least one of the above technical problems.

[0008] In the first aspect, an embodiment of the utility model provides a fuel system for a heavy-duty mining truck, which is applied to a heavy-duty mining truck; it includes a fuel tank and a PT fuel pump, the oil outlet of the fuel tank is connected to the oil inlet of the PT fuel pump through an oil inlet pipeline, and the oil outlet of the PT fuel pump is connected to the oil inlet of the fuel tank through a residual oil return pipe; a fuel pre-supply pump and a fuel filter are arranged on the oil inlet pipeline, and the fuel filter includes a fuel filter element; a target fuel pipeline is also arranged between the oil outlet of the fuel filter element and the residual oil return pipe, and a solenoid valve is arranged on the target fuel pipeline; the solenoid valve is used to control the on-off of the target fuel pipeline.

[0009] Furthermore, one end of the target fuel pipeline is connected to the residual fuel return pipe through a three-way joint.

[0010] Furthermore, the fuel filter also includes a fuel coarse filter; the oil outlet of the fuel tank is connected to the fuel pre-supply pump, the fuel coarse filter, the fuel filter element and the oil inlet of the PT fuel pump in sequence; the other end of the target fuel pipeline is connected to the oil outlet of the fuel filter element through a three-way joint.

[0011] Furthermore, a fuel injector is also arranged on the residual fuel return pipe; and the communication position between the target fuel pipeline and the residual fuel return pipe is arranged on the pipeline between the fuel injector and the fuel tank.

[0012] In a second aspect, an embodiment of the utility model further provides a heavy-duty mining truck, comprising the heavy-duty mining truck fuel system described in the first aspect.

[0013] The utility model provides a fuel system for a heavy-duty mining truck and a heavy-duty mining truck. A fuel pipeline is added between the oil outlet of an engine fuel filter and a connecting pipeline of a PT fuel pump, the fuel inlet pipe is connected with a residual oil return pipe of the engine, and a solenoid valve is used for shutoff control. When the fuel pre-supply pump is working, the solenoid valve is opened, and the gas in the engine fuel filter directly flows back to the fuel tank through the residual oil return pipe, thereby avoiding oil pollution caused by loose pipe joints and polluting the environment, saving fuel consumption, reducing the labor intensity of maintenance workers, and alleviating the technical problem of wasting fuel in the engine exhaust process in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic diagram of a fuel system for a heavy-duty mining truck provided in an embodiment of the utility model.

[0016] In the figure: 1. fuel tank, 2. PT fuel pump, 3. fuel inlet pipeline, 4. residual fuel return pipe, 5. fuel pre-supply pump, 6. fuel filter, 61. fuel filter element, 62. fuel coarse filter, 7. target fuel pipeline, 8. solenoid valve, 9. injector. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Figure 1 Schematic diagram of a fuel system for a heavy-duty mining truck provided according to an embodiment of the utility model, the system is applied to a heavy-duty mining truck. Figure 1 As shown, the fuel system of the mining heavy truck includes a fuel tank 1 and a PT fuel pump 2, wherein the PT fuel pump 2 is a proportional time (PT) fuel pump.

[0019] Specifically, if Figure 1 As shown, the oil outlet of the fuel tank 1 is connected to the oil inlet of the PT fuel pump 2 through the oil inlet pipeline 3, and the oil outlet of the PT fuel pump 2 is connected to the oil inlet of the fuel tank 1 through the residual oil return pipe 4; a fuel pre-supply pump 5 and a fuel filter 6 are arranged on the oil inlet pipeline 3, and the fuel filter 6 includes a fuel filter element 61.

[0020] Specifically, if Figure 1 As shown, a target fuel pipeline 7 is further arranged between the oil outlet of the fuel filter element 61 and the residual oil return pipe 4 , and a solenoid valve 8 is arranged on the target fuel pipeline 7 .

[0021] Specifically, the solenoid valve 8 is used to control the on-off of the target fuel pipeline 7 .

[0022] Specifically, if Figure 1As shown, the fuel filter 6 also includes a fuel coarse filter 62; the fuel outlet of the fuel tank 1 is connected to the fuel pre-supply pump 5, the fuel coarse filter 62, the fuel filter element 61 and the fuel inlet of the PT fuel pump 2 in sequence.

[0023] Preferably, in the embodiment of the utility model, one end of the target fuel pipeline 7 is connected to the residual oil return pipe 4 through a three-way joint, and the other end of the target fuel pipeline 7 is connected to the oil outlet of the fuel filter element 61 through a three-way joint.

[0024] Specifically, if Figure 1 As shown, a fuel injector 9 is also arranged on the residual fuel return pipe 4. The communication position between the target fuel pipeline 7 and the residual fuel return pipe 4 is arranged on the pipeline between the fuel injector 9 and the fuel tank 1.

[0025] The working process of a fuel system for a heavy-duty mining truck provided by an embodiment of the utility model is as follows: after replacing the fuel filter 6, the solenoid valve 8 is controlled to be turned on, and the fuel pre-supply pump 5 is turned on, so that the gas and fuel on the oil inlet pipeline 3 are returned to the fuel tank 1 through the target fuel pipeline 7 and the residual oil return pipe 4 to perform the exhaust operation; after the fuel pre-supply pump 5 runs for 1min-2min, it stops and the solenoid valve 8 is controlled to be disconnected.

[0026] The utility model provides a fuel system for a heavy-duty mining truck, which innovates the original operation mode of ejecting engine fuel exhaust from a loose pipe joint by installing a fuel pipeline between the oil outlet of the engine fuel filter and the PT fuel pump connecting pipeline, connecting the fuel inlet pipe with the residual oil return pipe of the engine, and using a solenoid valve for shut-off control. When the fuel pre-supply pump is working, the solenoid valve is opened, and the gas in the engine fuel filter directly flows back to the fuel tank through the residual oil return pipe, thereby avoiding oil pollution caused by loose pipe joints to pollute the environment, saving fuel consumption, and reducing the labor intensity of maintenance workers.

[0027] The fuel system for a heavy-duty mining truck provided by the embodiment of the utility model has the following technical effects compared with the prior art:

[0028] 1. Save labor costs. After the innovation of the engine intelligent fuel exhaust technology, the driver only needs to turn on the fuel pre-supply pump switch before starting the vehicle to complete the fuel exhaust operation. This work saves all maintenance personnel, and the number of personnel involved in the operation is reduced from the original 3 people to only one driver.

[0029] 2. Safety and environmental protection. After the innovation of the engine's intelligent fuel exhaust technology, the operators are no longer exposed to the potential safety hazard of fuel splashing onto their bodies, thus ensuring their personal safety and achieving "zero" environmental pollution and "zero safety hazards". This meets the current national environmental protection situation and the requirements for smart mine construction, and improves work efficiency.

[0030] 3. After the innovation of engine intelligent fuel exhaust technology, the efficiency of engine fuel exhaust operation has increased by more than 98%. Through the innovation of engine fuel exhaust technology, the overall dispatch rate of equipment has been improved, and the actual operation time of equipment has been increased, which has made positive contributions to the high-quality development of the company's smart mine construction.

[0031] The embodiment of the utility model further provides a heavy-duty mining truck, including the fuel system of the heavy-duty mining truck provided by the embodiment of the utility model.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fuel system for a heavy-duty mining truck, applied to a heavy-duty mining truck; comprising a fuel tank and a PT fuel pump, wherein the oil outlet of the fuel tank is connected to the oil inlet of the PT fuel pump through an oil inlet pipeline, and the oil outlet of the PT fuel pump is connected to the oil inlet of the fuel tank through a residual oil return pipe; a fuel pre-supply pump and a fuel filter are arranged on the oil inlet pipeline, and the fuel filter comprises a fuel filter element; characterized in that: A target fuel pipeline is also arranged between the oil outlet of the fuel filter element and the residual oil return pipe, and a solenoid valve is arranged on the target fuel pipeline; The solenoid valve is used to control the on-off of the target fuel pipeline.

2. The fuel system for a heavy-duty mining truck according to claim 1, characterized in that: One end of the target fuel pipeline is connected to the residual fuel return pipe through a three-way joint.

3. The fuel system for a heavy-duty mining truck according to claim 1, characterized in that: The fuel filter also includes a fuel coarse filter; the fuel outlet of the fuel tank is sequentially connected to the fuel pre-supply pump, the fuel coarse filter, the fuel filter element and the fuel inlet of the PT fuel pump; The other end of the target fuel pipeline is communicated with the oil outlet of the fuel filter element through a three-way joint.

4. The fuel system for a heavy-duty mining truck according to claim 1, characterized in that: The residual oil return pipe is also provided with an injector; The communication position between the target fuel pipeline and the residual fuel return pipeline is arranged on the pipeline between the fuel injector and the fuel tank.

5. A heavy-duty mining truck, characterized in that: A fuel system for a heavy-duty mining truck comprising the fuel system of any one of claims 1 to 4.

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