Water circulation system of loading machine

Abstract

The invention relates to the technical field of loaders, and particularly discloses a loader water circulation system which comprises a loader body, a water tank installed on the loader body, a heat dissipation unit, a heating unit and a diesel engine used for driving the loader, the heat dissipation unit comprises a radiator, and a water outlet pipe, the heat dissipation pipe and a water return pipe form a circulation pipeline. A water pump for driving water flow to circulate is arranged on the circulating pipeline; the heating unit is mounted between the water outlet pipe and the radiating pipe; in the actual use process, under the work of the water pump, water can take away heat of the diesel engine after passing through the heat dissipation pipe, the water with the increased heat enters the heat dissipation device for heat dissipation after passing through the water return pipe, the water with the heat dissipated enters the heat dissipation pipe again, and therefore heat dissipation of the diesel engine is achieved; the water in the heat dissipation system is heated, and the situation that in cold weather, the heat dissipation water is frozen, or the diesel engine cannot be started due to overcooling is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of loaders, and in particular to a water circulation system of a loader. Background Art

[0002] A loader is a kind of earthwork construction machinery widely used in construction projects such as roads, railways, buildings, hydropower, ports, and mines. It is mainly used for shoveling loose materials such as soil, sand, lime, coal, etc., and can also perform light shoveling operations on ore, hard soil, etc.; different power drives are used on the market according to the different energy sources used. For example, new energy loaders are driven by electric motors, while diesel loaders are driven by diesel engines. However, a large amount of heat is generated during the operation of the diesel engine. If the heat is not dissipated, it will cause certain damage to the diesel engine. Therefore, the diesel engine needs to be cooled. The heat dissipation technology and layout of existing large loaders are approaching maturity, while on small or micro loaders, the heat dissipation technology needs to be modified to make it suitable for small or micro loaders. Therefore, a heat dissipation system for small or micro loaders is urgently needed. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a loader water circulation system, which has the advantage of effectively dissipating heat for a diesel engine in a mini loader and solves the problems in the background technology.

[0004] The loader water circulation system of the present invention comprises a loader body, a water tank mounted on the loader body, a heat dissipation unit, a heating unit, and a diesel engine for driving the loader, wherein the heat dissipation unit comprises a radiator, the water tank is connected to the heat dissipation box through a water inlet conduit, the heat dissipation box is provided with a water outlet and a water return port, the water outlet is provided with a water outlet pipe, the water return port is connected with a water return pipe, the end of the water outlet pipe is connected with the water inlet end of the heat dissipation pipe of the diesel engine, the end of the water return pipe away from the heat dissipation box is connected with the water outlet end of the heat dissipation pipe of the diesel engine, the water outlet pipe, the heat dissipation pipe and the water return pipe form a circulation pipeline, and the circulation pipeline is provided with a water pump for driving water flow to circulate;

[0005] The heating unit is installed between the water outlet pipe and the heat dissipation pipe.

[0006] The heating unit comprises a heating tube, and a heating wire is arranged inside the heating tube.

[0007] The loader body includes a frame, the diesel engine is installed in the center of the base, and the water tank is installed on the top of the diesel engine and is arranged in parallel with the oil tank of the diesel engine;

[0008] A protective hood for covering the diesel engine, the water tank and the diesel engine oil tank is installed on the frame, and a seat is arranged on the upper surface of the hood.

[0009] Also included is a temperature control unit, which includes a temperature control tube installed inside the table and chair, a first conduit and a second conduit;

[0010] The first conduit is installed between the temperature control tube and the heating tube;

[0011] The second conduit is installed between the temperature control pipe and the return water pipe.

[0012] The first conduit and the second conduit are both provided with a first solenoid valve, and the first conduit, the temperature control tube and the second conduit form a first temperature control pipeline by utilizing the water flow passing through the heating tube and the heat sink.

[0013] The temperature regulating unit also includes a third conduit, which is installed between the heating pipe and the return water pipe. The third conduit, the second conduit and the temperature control pipe form a second temperature control pipeline using the water flow in the heat dissipation pipe.

[0014] And the connection point between the third conduit and the return pipe is located upstream of the connection point between the return pipe and the second conduit.

[0015] A second electromagnetic valve is arranged on the water return pipe between the end of the heat dissipation pipe and the second conduit, and a third electromagnetic valve is arranged on the third conduit.

[0016] A temperature detector is installed at the end of the heat pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In actual use of the present invention, under the operation of the water pump, water will take away the heat of the diesel engine after passing through the heat dissipation pipe, the water with increased heat will enter the radiator after passing through the return pipe for heat dissipation, and the water after heat dissipation will enter the heat dissipation pipe again, thereby realizing the heat dissipation of the diesel engine; the water in the heat dissipation system is heated to avoid freezing of the heat dissipation water in cold weather, or the diesel engine being unable to start due to overcooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention installed on a loader;

[0021] Figure 2 This is a schematic structural diagram of Embodiment 1 of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the second embodiment of the present invention.

[0023] In the figure: 1, frame; 2, diesel engine; 3, protective hood; 4, cooling unit; 41, water tank; 42, water inlet pipe; 43, water outlet pipe; 44, radiator; 45, water pump; 46, cooling pipe; 47, water return pipe;

[0024] 5. Heating unit; 51. Heating tube; 52. Heating wire;

[0025] 6. Temperature adjustment unit; 61. Temperature control tube; 62. First conduit; 63. Second conduit; 64. Third conduit; a. First solenoid valve; b. Second solenoid valve; c. Third solenoid valve;

[0026] 7. Seat; 8. Temperature detector. DETAILED DESCRIPTION

[0027] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0028] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] Embodiment 1:

[0030] See also Figure 1 - Figure 2The loader water circulation system of the present invention comprises a loader body, a water tank 41 installed on the loader body, a heat dissipation unit 4, a heating unit 5, and a diesel engine 2 for driving the loader, the heat dissipation unit 4 comprises a radiator 44, the water tank 41 is connected with the heat dissipation box through a water inlet conduit 42, the heat dissipation box is provided with a water outlet and a water return port, the water outlet is provided with a water outlet pipe 43, the water return port is connected with a water return pipe 47, the end of the water outlet pipe 43 is connected with the water inlet end of the heat dissipation pipe 6 of the diesel engine 2, the end of the water return pipe 47 away from the heat dissipation box is connected with the water outlet end of the heat dissipation pipe 6 of the diesel engine 2, the water outlet pipe 43, the heat dissipation pipe 6 and the water return pipe 47 form a circulation pipeline, and the circulation pipeline is provided with a water pump 45 for driving the water flow to circulate;

[0031] In the above technical solution, water is supplied to the entire circulation pipeline through the water tank 41, and the water pump 45 provides power for the entire circulation pipeline. In actual use, the water in the water tank 41 will enter the radiator 44. The water entering the radiator 44 will re-enter the radiator 44 through the water outlet pipe 43, the heat dissipation pipe 6 and the return pipe 47 under the operation of the water pump 45. After passing through the heat dissipation pipe 6, the water will take away the heat of the diesel engine 2. The water with increased heat will enter the radiator 44 through the return pipe 47 for heat dissipation. The water after heat dissipation enters the heat dissipation pipe 6 again, thereby realizing the heat dissipation of the diesel engine 2.

[0032] The heating unit 5 is installed between the water outlet pipe 43 and the heat dissipation pipe 6, and the water pump 45 is installed on the water outlet pipe 43. The heating unit 5 includes a heating tube 51. A heating wire 52 is arranged inside the heating tube 51. The heating wire 52 is electrically connected to the power supply unit in the loader body, wherein the power supply unit can be a battery. The heating wire 52 is powered by the battery, so that the water in the heat dissipation system can be effectively heated to avoid freezing of the heat dissipation water in cold weather, or the diesel engine 2 cannot be started due to overcooling.

[0033] The loader body includes a frame 1, a diesel engine 2 is installed in the center of the base, and a water tank 41 is installed on the top of the diesel engine 2 and is arranged parallel to the oil tank of the diesel engine 2;

[0034] A protective hood 3 for covering the diesel engine 2, the water tank 41 and the oil tank of the diesel engine 2 is installed on the frame, and a seat 7 is provided on the upper surface of the hood.

[0035] The temperature control unit 6 is also included, and the temperature control unit 6 includes a temperature control tube 61 installed inside the table and chair, a first conduit 62 and a second conduit 63; the first conduit 62 is installed between the temperature control tube 61 and the heating tube 51; the second conduit 63 is installed between the temperature control tube 61 and the return water pipe 47. The first conduit 62 and the second conduit 63 are both provided with a first solenoid valve a, and the first conduit 62, the temperature control tube 61 and the second conduit 63 form a first temperature control pipeline by using the water flow through the heating tube 51 and the heat sink.

[0036] In this embodiment, due to the small or miniaturized size of the loader body, there is no independent cab. In cold weather conditions, the temperature of the seat 7 is too low, which will affect the driver's use. Therefore, the first temperature control pipe in the temperature control unit 6 can effectively guide the water flow heated by the heating wire 52 into the temperature control tube 61, thereby providing a comfortable driving environment for the driver.

[0037] Embodiment 2:

[0038] See also Figure 3 As a further improvement of the first embodiment, the difference from the first embodiment is that the temperature control unit 6 further includes a third conduit 64, which is installed between the heating pipe 51 and the return pipe 47. The third conduit 64, the second conduit 63 and the temperature control pipe 61 form a second temperature control pipeline using the water flow in the heat dissipation pipe 6, and the connection point between the third conduit 64 and the return pipe 47 is located upstream of the connection point between the return pipe 47 and the second conduit 63; a second solenoid valve b is provided on the return pipe 47 between the end of the heat dissipation pipe 6 and the second conduit 63, and a third solenoid valve c is provided on the third conduit 64.

[0039] This embodiment, when used:

[0040] When only the diesel engine 2 needs to be cooled or heated, the heating wire 52 in the heating assembly can be disabled, and the first solenoid valve a and the third solenoid valve c are closed, and the second solenoid valve b is opened, so that the circulation pipeline for cooling the diesel engine 2 can operate normally. If the diesel engine 2 needs to be heated, the heating wire 52 in the heating assembly can be activated.

[0041] When the seat 7 needs to be heated, the second solenoid valve b and the third solenoid valve c can be closed to allow the heated water flow to enter the heat dissipation pipe 6 in the circulation pipe and the first conduit 62 in the first temperature control pipe after being divided, thereby achieving heating and temperature control of the diesel engine 2 and the seat 7;

[0042] When the heat generated by the diesel engine 2 during use is able to heat the seat 7, the second solenoid valve b can be closed, and the third solenoid valve c on the third conduit 64 can be opened, and the first solenoid valve a on the first conduit 62 can be closed, so that the water flow can enter the temperature control tube 61 through the third pipe after being heated by the diesel engine 2 to heat the seat 7, effectively utilizing the temperature generated by the diesel engine 2 when it is working to heat the seat 7.

[0043] In this embodiment, a temperature detector 8 is installed at the end of the heat dissipation pipe 6. The temperature of the water after passing through the heat dissipation pipe 6 is detected by the temperature detector 8 located in the heat dissipation pipe 6. When the temperature is not high, there is no need to start the radiator 44 and the water pump 45, thereby avoiding excessive heat dissipation and wasting electric energy.

[0044] When the weather is too cold, the water pump 45 will not be started when the system is in circulation; when the heating is stopped, if the temperature of the temperature detector 8 does not drop too much, the heating unit 5 can be stopped for a certain period of time, so that the water flows through the diesel engine 2 after being heated and enters the temperature control tube 61 through the third pipe to heat the seat 7, effectively utilizing the temperature generated by the diesel engine 2 when it is working to heat the seat 7.

[0045] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A loader water circulation system, comprising a loader body, a water tank (41) mounted on the loader body, a heat dissipation unit (4), a heating unit (5), and a diesel engine (2) for driving the loader, characterized in that: The heat dissipation unit (4) comprises a radiator (44), the water tank (41) is connected to the heat dissipation box through a water inlet conduit (42), the heat dissipation box is provided with a water outlet and a water return port, the water outlet is provided with a water outlet pipe (43), the water return port is connected with a water return pipe (47), the end of the water outlet pipe (43) is connected to the water inlet end of the heat dissipation pipe (6) of the diesel engine (2), the end of the water return pipe (47) away from the heat dissipation box is connected to the water outlet end of the heat dissipation pipe (6) of the diesel engine (2), the water outlet pipe (43), the heat dissipation pipe (6) and the water return pipe (47) form a circulation pipeline, and the circulation pipeline is provided with a water pump (45) for driving water flow to circulate; The heating unit (5) is installed between the water outlet pipe (43) and the heat dissipation pipe (6).

2. A loader water circulation system according to claim 1, characterized in that: The heating unit (5) comprises a heating tube (51), and a heating wire (52) is arranged inside the heating tube (51).

3. A loader water circulation system according to claim 1, characterized in that: The loader body comprises a frame (1), the diesel engine (2) is mounted at the center of a base, and the water tank (41) is mounted on the top of the diesel engine (2) and is arranged in parallel with the oil tank of the diesel engine (2); A protective hood (3) for covering the diesel engine (2) and the water tank (41) and the oil tank of the diesel engine (2) is installed on the frame, and a seat (7) is provided on the upper surface of the hood.

4. A loader water circulation system according to claim 1, characterized in that: It also includes a temperature adjustment unit (6), wherein the temperature adjustment unit (6) includes a temperature control tube (61) installed inside the table and chair, a first conduit (62) and a second conduit (63); The first conduit (62) is installed between the temperature control tube (61) and the heating tube (51); The second conduit (63) is installed between the temperature control tube (61) and the return water pipe (47).

5. A loader water circulation system according to claim 4, characterized in that: The first conduit (62) and the second conduit (63) are both provided with a first solenoid valve (a), and the first conduit (62), the temperature control tube (61) and the second conduit (63) form a first temperature control pipeline by utilizing the water flow passing through the heating tube (51) and the heat sink.

6. The loader water circulation system according to claim 1, characterized in that: The temperature control unit (6) further comprises a third conduit (64), the third conduit (64) being installed between the heating pipe (51) and the return water pipe (47), and the third conduit (64), the second conduit (63) and the temperature control pipe (61) forming a second temperature control pipeline by utilizing the water flow in the heat dissipation pipe (6).

7. A loader water circulation system according to claim 6, characterized in that: Furthermore, the connection point between the third conduit (64) and the return pipe (47) is located upstream of the connection point between the return pipe (47) and the second conduit (63).

8. The loader water circulation system according to claim 1, characterized in that: A second electromagnetic valve (b) is provided on the water return pipe (47) between the end of the heat dissipation pipe (6) and the second conduit (63), and a third electromagnetic valve (c) is provided on the third conduit (64).

9. The loader water circulation system according to claim 1, characterized in that: A temperature detector (8) is installed at the end of the heat dissipation pipe (6).

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