Mobile crushing and screening equipment power system and mobile crushing equipment

Abstract

The utility model provides a power system of mobile crushing and screening equipment and mobile crushing equipment, which are used for cold start in a low-temperature environment and comprise an engine, a first cooling pipe, a second cooling pipe and a fuel heater, and the first cooling pipe and the second cooling pipe are respectively connected between the engine and the fuel heater. The fuel oil heater comprises a first cavity and a second cavity which are arranged in a spaced mode, the first cooling pipe is used for conveying cooling liquid from an engine to the first cavity of the fuel oil heater, the second cooling pipe is used for conveying the cooling liquid from the first cavity to the engine, and the fuel oil heater communicates with the oil tank through a first fuel oil pipe. The first fuel oil pipe is used for conveying oil liquid from the oil tank into the second cavity for combustion and heating the cooling liquid in the first cavity. The power system of the movable crushing and screening equipment can solve the problem that an engine is difficult to start in a low-temperature environment in the prior art, is high in integration and convenient to use, and improves the construction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a mobile crushing and screening equipment power system and a mobile crushing equipment. Background Art

[0002] When the ambient temperature drops below -20°C, cold starting the engine becomes increasingly difficult. When starting the engine in low-temperature conditions, the low intake air temperature causes the compressed air temperature in the cylinder to be unfavorable for fuel combustion. The low temperature of the oil in the oil pan makes the oil more viscous, increasing resistance when starting the engine under these conditions. Furthermore, the viscous oil hinders the formation of an oil film between the friction pairs. Forced starting the engine will inevitably cause scratches between the friction surfaces, thereby shortening the engine life. Furthermore, in low-temperature conditions, the engine's coolant temperature is low, and the entire engine body is also low. After the engine starts, the coolant in the cylinder takes a long time to reach the ideal operating temperature. Direct starting can cause the engine to fail to start or even damage the engine. Therefore, low temperatures increase friction and hinder fuel combustion, reducing starting performance. Furthermore, existing mobile crushing equipment relies solely on the engine's own intake air heating before starting in low-temperature environments, without heating the coolant and fuel in the engine cylinder, resulting in starting difficulties. Heating the engine and cold starting also require an external mains connection, which is inconvenient when operating in remote mining areas without mains power. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a power system for mobile crushing and screening equipment, which can solve the problem of difficulty in starting the engine in a low temperature environment in the prior art, has high integration, is easy to use, and improves construction efficiency.

[0004] The utility model provides a power system of mobile crushing and screening equipment, which is used for cold starting in a low-temperature environment. The system comprises an engine, a first cooling pipe, a second cooling pipe and a fuel heater. The first cooling pipe and the second cooling pipe are respectively connected between the engine and the fuel heater. The fuel heater comprises a first cavity and a second cavity arranged at intervals. The first cooling pipe is used to transport the coolant from the engine to the first cavity of the fuel heater. The ball valve is connected to the first cooling pipe. When the ambient temperature is lower than -20°C, the ball valve opens, and the coolant in the engine can enter the first cavity of the fuel heater. The second cooling pipe is used to transport the coolant from the first cavity to the engine. The fuel heater is connected to the fuel tank through a first fuel pipe. The first fuel pipe is used to transport the oil from the fuel tank to the second cavity for combustion and to heat the coolant in the first cavity.

[0005] In one embodiment, the power system of the mobile crushing and screening equipment further includes an electromagnetic pump, which is connected to the first fuel pipe and is used to pump the oil in the fuel tank into the second cavity.

[0006] In one embodiment, the mobile crushing and screening equipment power system further includes a temperature sensor, which is connected to the engine and is used to detect the ambient temperature.

[0007] In one embodiment, the power system of the mobile crushing and screening equipment also includes an engine fuel pipe heater and an engine oil pipe. The engine oil pipe is connected between the fuel tank and the engine. The engine fuel pipe heater is connected to the engine oil pipe. The resistance wire of the engine fuel pipe heater is arranged in the engine oil pipe. When ice or wax is formed inside the engine oil pipe, the engine fuel pipe heater heats the engine oil pipe.

[0008] In one embodiment, the mobile crushing and screening equipment power system further includes an oil tank heater, which is connected to the oil tank. The first heating part of the oil tank heater is arranged in the oil tank to heat the oil to melt ice or wax in the internal pipes of the oil tank.

[0009] In one embodiment, the mobile crushing and screening equipment power system further includes a bottom shell heater, which is connected to the engine. The second heating part of the bottom shell heater is arranged in the bottom shell of the engine to heat the oil in the engine bottom shell.

[0010] In one embodiment, the power system of the mobile crushing and screening equipment also includes a first filter heater, a second filter heater, an oil filter and a diesel filter, wherein the oil filter is used to filter the engine oil, and the diesel filter is used to filter the diesel of the engine. The oil filter is arranged in the first filter heater, and the first filter heater is used to heat the oil filter. The diesel filter is arranged in the second filter heater, and the second filter heater is used to heat the diesel filter.

[0011] In one embodiment, the fuel heater is further provided with an exhaust pipe, the outlet end of the exhaust pipe is provided at the battery of the mobile crushing and screening equipment, and in a low temperature environment, the high-temperature exhaust gas after combustion in the second cavity can heat the battery.

[0012] In one embodiment, the power system of the mobile crushing and screening equipment is electrically connected to a control assembly, and the control assembly controls the start and stop of the power system of the mobile crushing and screening equipment.

[0013] The utility model also relates to a mobile crushing device, comprising the above-mentioned mobile crushing and screening device power system.

[0014] The mobile crushing and screening equipment power system of the present invention is provided with a fuel heater, which connects the engine and the fuel heater through a first cooling pipe and a second cooling pipe, so that the coolant can circulate in the first cavity of the engine and the fuel heater, and the second cavity of the fuel heater is connected with the fuel tank, and the oil in the fuel tank enters the second cavity of the fuel heater and burns to heat the coolant in the first cavity. The coolant is heated before the engine is started, and the heated coolant reaches an ideal operating temperature state and enters the engine, which can avoid the problem of the engine not being able to operate normally or being damaged when it is directly started in a low-temperature environment. The operation is simple, the control is convenient, and the construction efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram from one perspective of the power system of the mobile crushing and screening equipment of the present invention.

[0017] Figure 2 It is a schematic diagram of the axial structure of the power system of the mobile crushing and screening equipment of the present utility model.

[0018] Figure 3 It is a side structural diagram of the power system of the mobile crushing and screening equipment of the present utility model.

[0019] Figure 4 It is a structural diagram of the control assembly of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the fuel heater of the present utility model.

[0021] Figure 6 It is a structural schematic diagram of the electromagnetic pump of the present utility model.

[0022] Figure 7 It is a structural schematic diagram of the engine fuel pipe heater of the utility model.

[0023] Figure 8 It is a structural schematic diagram of the oil tank heater of the present utility model.

[0024] Figure 9 It is a structural schematic diagram of the bottom shell heater of the present utility model.

[0025] Figure 10 It is a structural schematic diagram of the first filter heater of the utility model.

[0026] Explanation of the accompanying reference numerals: engine 11; engine oil pipe 111; first cooling pipe 121; second cooling water pipe 122; fuel heater 13; first fuel pipe 131; electromagnetic pump 14; ball valve 15; engine fuel pipe heater 16; resistance wire 161; fuel tank heater 17; first heating unit 171; sump heater 18; first filter heater 19; fuel tank 21; control assembly 22.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0030] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0031] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0032] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0033] like Figures 1 to 10As shown, the mobile crushing and screening equipment power system of this embodiment is used when the engine 11 is cold-started in a low-temperature environment. The low-temperature environment refers to -20°C to -50°C, including but not limited to -20°C, -41°C or -50°C. The mobile crushing and screening equipment power system includes an engine 11, a first cooling pipe 121, a second cooling pipe 122 and a fuel heater 13. The first cooling pipe 121 and the second cooling pipe 122 are respectively connected between the engine 11 and the fuel heater 13. The fuel heater 13 includes a first cavity and a second cavity arranged at intervals. The first cooling pipe 121 is used to transport coolant from the engine 11 to the first cavity of the fuel heater 13. The second cooling pipe 122 is used to transport coolant from the first cavity to the engine 11. The fuel heater 13 is connected to the fuel tank 21 through a first fuel pipe 131. The first fuel pipe 131 is used to transport oil from the fuel tank 21 to the second cavity for combustion and to heat the coolant in the first cavity; wherein the oil refers to fuel. In this embodiment, the power system of the mobile crushing and screening equipment also includes a temperature sensor, which is connected to the engine 11 and is used to detect the ambient temperature. In a low temperature environment, the coolant temperature in the cylinder of the engine 11 is low, and it takes a long time for the coolant in the cylinder to reach the ideal operating temperature after the engine 11 is started. The ideal operating temperature is 85°C to 95°C. In this case, directly starting the engine 11 may cause the engine 11 to fail to start or damage the engine 11. Therefore, it is necessary to heat the coolant in the cylinder of the engine 11 to a suitable temperature in advance to reduce damage to the engine 11. The function of the fuel heater 13 is to circulate and heat the low-temperature coolant from the cylinder of the engine 11. The heating time is 25 minutes to 35 minutes, preferably 25 minutes, 30 minutes or 35 minutes, etc., that is, the low-temperature coolant in the cylinder of the engine 11 enters the first cavity of the fuel heater 13 through the first cooling pipe 121 for heating, and the coolant heated to the ideal operating state returns to the cylinder of the engine 11 through the second cooling pipe 122. At this time, the engine 11 can be started directly without damaging the engine 11. In addition, since the present embodiment heats the coolant after burning the oil in the fuel tank 21, when there is no mains electricity in a remote mining area, the engine 11 can be heated by the power system itself and started at low temperature, which is convenient to control and reduces the constraints of the environment on the power system of the mobile crushing and screening equipment. The coolant of the engine 11 is preheated in advance by the fuel in the fuel tank 21, and the power consumption of the entire power system is low when it is operated to a state where the engine 11 can start normally. The normal operation of the power system can be achieved through the on-board battery, which not only saves energy but also improves efficiency.

[0034] The mobile crushing and screening equipment power system of the present invention is provided with a fuel heater 13, which connects the engine 11 and the fuel heater 13 through a first cooling pipe 121 and a second cooling pipe 122, so that the coolant can circulate in the first cavity of the engine 11 and the fuel heater 13, and the second cavity of the fuel heater 13 is connected to the fuel tank 21. The oil in the fuel tank 21 enters the second cavity of the fuel heater 13 and burns to heat the coolant in the first cavity. The coolant is heated before the engine 11 is started. The heated coolant reaches an ideal operating temperature state and enters the engine 11, which can avoid the problem of the engine 11 not being able to operate normally or being damaged when it is directly started in a low-temperature environment. The operation is simple, the control is convenient, and the construction efficiency is improved.

[0035] like Figure 1 and Figure 2 As shown, the power system of the mobile crushing and screening equipment also includes a ball valve 15, which is arranged between the engine 11 and the fuel heater 13. The ball valve 15 is connected to the first cooling pipe 121. When the ambient temperature is lower than -20°C, the ball valve 15 opens, and the coolant in the engine 11 can enter the first cavity of the fuel heater 13. When the ambient temperature is higher than -20°C, that is, in the summer or autumn when the temperature is in an environment where the engine 11 does not need to be cold-started for a long time, the ball valve 15 is closed to prevent leakage of the coolant.

[0036] like Figure 1 and Figure 6 As shown, the power system of the mobile crushing and screening equipment also includes an electromagnetic pump 14, which is connected to the first fuel pipe 131. The electromagnetic pump 14 is used to pump the oil in the fuel tank 21 into the second cavity to ignite and burn, heating the first cavity to achieve heating of the coolant in the first cavity.

[0037] like Figure 1 and Figure 7 As shown, the power system of the mobile crushing and screening equipment also includes an engine fuel pipe heater 16 and an engine oil pipe 111. The engine oil pipe 111 is connected between the fuel tank 21 and the engine 11. The engine fuel pipe heater 16 is connected to the engine oil pipe 111. The resistance wire 161 of the engine fuel pipe heater 16 is set in the engine oil pipe 111. When in a low temperature environment, ice or wax will appear inside the engine oil pipe 111, affecting the supply of oil. The engine fuel pipe heater 16 heats the engine oil pipe 111 to melt the ice or wax, so that the engine oil pipe 111 can supply oil normally.

[0038] like Figure 3 and Figure 8As shown, the power system of the mobile crushing and screening equipment also includes a tank heater 17, which is connected to the tank 21. The tank heater 17 is installed at the bottom or side of the tank 21. The first heating part 171 of the tank heater 17 is arranged in the tank 21 to heat the oil to melt the ice or wax in the internal pipes of the tank 21; the first heater is a columnar structure, such as a heating rod.

[0039] like Figure 2 and Figure 9 As shown, the power system of the mobile crushing and screening equipment also includes a bottom shell heater 18, which is connected to the engine 11. The second heating part of the bottom shell heater 18 is arranged in the bottom shell of the engine 11, and heats the oil in the bottom shell of the engine 11 in a low temperature environment, thereby reducing the impact of the low-temperature engine oil on the start-up of the engine 11.

[0040] like Figure 10 As shown, the power system of the mobile crushing and screening equipment also includes a first filter heater 19, a second filter heater, an oil filter and a diesel filter. The oil filter is used to filter the oil of the engine 11, and the diesel filter is used to filter the diesel of the engine 11. The oil filter is arranged in the first filter heater, and the first filter heater is used to heat the oil filter. The diesel filter is arranged in the second filter heater, and the second filter heater is used to heat the diesel filter.

[0041] Preferably, the fuel heater 13 is also provided with an exhaust pipe, the outlet end of the exhaust pipe is arranged at the battery of the mobile crushing and screening equipment. In a low temperature environment, the high-temperature exhaust gas after combustion in the second cavity can heat the battery and can be used as a heat source for heating the battery.

[0042] like Figure 1 and Figure 4 As shown, the power system of the mobile crushing and screening equipment is electrically connected to the control assembly 22, that is, the fuel heater 13, the electromagnetic pump 14, the engine fuel pipe heater 16, the fuel tank heater 17, the first filter heater 19, the second filter heater and the bottom shell heater 18 are respectively electrically connected to the control assembly 22. The control assembly 22 controls the start and stop and logic control of the power system of the mobile crushing and screening equipment. When cold starting, when the power system heats for a time period of 25 minutes, 30 minutes or 35 minutes, the engine 11 can be started, and the power equipment used for heating other than the engine 11 can be automatically shut down (including coolant circulation heating and fuel heater 13, etc.); among them, the ignition of the fuel heater 13, the circulation of cooling water in the fuel heater 13, the operation of the electromagnetic pump 14, the filter heater, the oil pan heater, the engine fuel pipe heater 16 and the fuel tank heater 17 can all be powered by the on-board low-temperature battery, or an external AC power supply can be selected.

[0043] The utility model also relates to a mobile crushing device, comprising the above-mentioned mobile crushing and screening device power system.

[0044] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model shall be based on the appended claims.

Claims

1. A mobile crushing and screening equipment power system for cold starting in a low temperature environment, characterized in that: The invention comprises an engine (11), a first cooling pipe (121), a second cooling pipe (122), a fuel heater (13) and a ball valve (15), wherein the first cooling pipe (121) and the second cooling pipe (122) are respectively connected between the engine (11) and the fuel heater (13), the fuel heater (13) comprises a first cavity and a second cavity arranged at intervals, the first cooling pipe (121) is used to transport coolant from the engine (11) to the first cavity of the fuel heater (13), and the ball valve (15) is connected to the first cooling pipe. The fuel heater (13) is connected to the fuel tank (21) through a first fuel pipe (131). The first fuel pipe (131) is used to transport the fuel from the fuel tank (21) to the second cavity for combustion and to heat the coolant in the first cavity.

2. The mobile crushing and screening equipment power system according to claim 1, characterized in that: The mobile crushing and screening equipment power system further comprises an electromagnetic pump (14), wherein the electromagnetic pump (14) is connected to the first fuel pipe (131), and the electromagnetic pump (14) is used to pump the oil in the fuel tank (21) into the second cavity.

3. The mobile crushing and screening equipment power system according to claim 2, characterized in that: The mobile crushing and screening equipment power system further comprises a temperature sensor, which is connected to the engine (11) and is used to detect the ambient temperature.

4. The mobile crushing and screening equipment power system according to claim 1, characterized in that: The mobile crushing and screening equipment power system further includes an engine fuel pipe heater (16) and an engine oil pipe (111). The engine oil pipe (111) is connected between the fuel tank (21) and the engine (11). The engine fuel pipe heater (16) is connected to the engine oil pipe (111). A resistance wire (161) of the engine fuel pipe heater (16) is arranged in the engine oil pipe (111). When ice or wax forms inside the engine oil pipe (111), the engine fuel pipe heater (16) heats the engine oil pipe (111).

5. The mobile crushing and screening equipment power system according to claim 2, characterized in that: The mobile crushing and screening equipment power system further includes an oil tank heater (17), which is connected to the oil tank (21). A first heating portion (171) of the oil tank heater (17) is arranged in the oil tank (21) to heat the oil to melt ice or wax in the internal pipeline of the oil tank (21).

6. The mobile crushing and screening equipment power system according to claim 2, characterized in that: The mobile crushing and screening equipment power system further includes a bottom shell heater (18), the bottom shell heater (18) is connected to the engine (11), and a second heating portion of the bottom shell heater (18) is arranged in the bottom shell of the engine (11) to heat the oil in the bottom shell of the engine (11).

7. The mobile crushing and screening equipment power system according to claim 2, characterized in that: The mobile crushing and screening equipment power system also includes a first filter heater (19), a second filter heater, an oil filter and a diesel filter, wherein the oil filter is used to filter the engine oil of the engine (11), and the diesel filter is used to filter the diesel of the engine (11). The oil filter is arranged in the first filter heater, and the first filter heater is used to heat the oil filter. The diesel filter is arranged in the second filter heater, and the second filter heater is used to heat the diesel filter.

8. The mobile crushing and screening equipment power system according to claim 2, characterized in that: The fuel heater (13) is also provided with an exhaust pipe, the outlet end of which is arranged at the battery of the mobile crushing and screening equipment. In a low-temperature environment, the high-temperature exhaust gas after combustion in the second cavity can heat the battery.

9. The mobile crushing and screening equipment power system according to any one of claims 1 to 7, characterized in that: The power system of the mobile crushing and screening equipment is electrically connected to a control assembly (22), and the control assembly (22) controls the start and stop of the power system of the mobile crushing and screening equipment.

10. A mobile crushing equipment, characterized in that: A mobile crushing and screening equipment power system comprising the power system of any one of claims 1 to 9.

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