A mining machine closed loop cooling system

Abstract

The utility model discloses a kind of mining machine closed-loop cooling systems, including external cooling system and airborne cooling system, external cooling system includes cooling fan, air cooler and pump water tank component, pump water tank component includes outer frame, pump, pump motor and cooling liquid tank, the import of pump connects the outlet of cooling liquid tank, the export of pump connects the liquid inlet of air cooler, the liquid outlet of air cooler connects the liquid inlet of airborne cooling system, the liquid outlet of airborne cooling system connects the import of cooling liquid tank, the air inlet and air outlet are respectively arranged in the both ends of air cooler, the air outlet of air cooler is connected the air inlet of cooling fan by soft connection air duct. The utility model is connected together by cooling fan, air cooler and pump water tank component to form external cooling system, and by making external cooling system and airborne cooling system connect together to form a closed cooling liquid circulation loop, by air cooling circulation cooling, the sustained cooling of the heating component of mining machine can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of mining machine technology, specifically relating to a closed-loop cooling system for mining machines. Background Technology

[0002] In mining operations, the mining machine, as a core piece of equipment, directly affects the overall efficiency and stability of the mining operation. However, mining machines generate a large amount of heat during operation. If this heat is not cooled effectively and promptly, it can lead to problems such as motor overheating and accelerated component wear, severely impacting the performance and lifespan of the mining machine. Currently, common motor cooling methods include natural cooling, forced air cooling, and water cooling. However, these methods have certain limitations in practical applications. For example, natural cooling has high requirements for the installation environment, forced air cooling may not meet cooling needs under extreme operating conditions, and water cooling can cause pollution to coal, potash, and other minerals due to external drainage, as well as high maintenance costs. Therefore, a closed-loop cooling system for mining machines is needed to solve these problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a closed-loop cooling system for mining machines, which addresses the shortcomings of the prior art. The system has a reasonable structural design. It forms an external cooling system by connecting the cooling fan, air cooler, and pump water tank assembly together. It also forms a closed coolant circulation loop by connecting the external cooling system and the onboard cooling system together. By cooling the air-cooled components through the air-cooled circulation, it can continuously cool the heat-generating parts of the mining machine and avoid the pollution of coal, potash, and other minerals caused by water-cooled external drainage.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a closed-loop cooling system for a mining machine, including an external cooling system and an onboard cooling system connected thereto. The external cooling system includes a cooling fan, an air cooler, and a pump-water tank assembly connected in sequence. The pump-water tank assembly includes an outer frame and a pump, a pump motor, and a coolant tank disposed within the outer frame. The inlet of the pump is connected to the outlet of the coolant tank, and the outlet of the pump is connected to the inlet of the air cooler through a pipe. The outlet of the air cooler is connected to the inlet of the onboard cooling system through a pipe, and the outlet of the onboard cooling system is connected to the inlet of the coolant tank through a pipe. One end of the air cooler is open as an air inlet, and the other end of the air cooler is provided with an air outlet. The air outlet of the air cooler is connected to the air inlet of the cooling fan through a flexible air duct.

[0005] The aforementioned closed-loop cooling system for a mining machine includes an air cooler housing. An air inlet and an air outlet are respectively located at both ends of the air cooler housing. A spirally arranged cooling pipe is installed inside the air cooler housing. The liquid inlet of the cooling pipe extends to the outside of the air cooler housing and is connected to the outlet of the pump. The liquid outlet of the cooling pipe extends to the outside of the air cooler housing and is connected to the liquid inlet of the onboard cooling system.

[0006] In the aforementioned closed-loop cooling system for a mining machine, the top two ends of the air cooler shell are respectively provided with perforations for the two ends of the cooling pipes to pass through.

[0007] In the aforementioned closed-loop cooling system for a mining machine, a grid-like protective mesh is provided at the air inlet of the air cooler shell.

[0008] In the aforementioned closed-loop cooling system for a mining machine, each spiral ring of the cooling pipe is arranged in a U-shape.

[0009] In the aforementioned closed-loop cooling system for a mining machine, the cooling pipe is a copper pipe.

[0010] In the aforementioned closed-loop cooling system for a mining machine, the inlet of the coolant tank is positioned higher than its outlet.

[0011] The aforementioned closed-loop cooling system for a mining machine has multiple lifting lugs on its outer frame.

[0012] In the aforementioned closed-loop cooling system for a mining machine, a filter is installed inside the coolant tank.

[0013] The aforementioned closed-loop cooling system for a mining machine also includes a controller for controlling the pump motor and the cooling fan.

[0014] This utility model has the following advantages compared with the prior art: This utility model has a reasonable structural design. By connecting the cooling fan, air cooler and pump water tank assembly together to form an external cooling system, and by connecting the external cooling system and the onboard cooling system together to form a closed coolant circulation loop, the heat-generating components of the mining machine can be continuously cooled by air cooling circulation, avoiding the pollution of coal, potash and other minerals caused by water cooling with external drainage.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Airborne cooling system; 2. Cooling fan; 3. Flexible connection duct; 4. Air cooler; 41. Air cooler shell; 42. Cooling pipe; 43. Grille-shaped protective net; 5. Outer frame; 6. Pump; 7. Pump motor; 8. Coolant tank; 9. Lifting lug; 10. Controller. Detailed Implementation

[0018] like Figure 1 As shown, this utility model includes an external cooling system and an airborne cooling system 1 connected thereto. The external cooling system includes a cooling fan 2, an air cooler 4, and a pump-water tank assembly connected in sequence. The pump-water tank assembly includes an outer frame 5 and a pump 6, a pump motor 7, and a coolant tank 8 disposed within the outer frame 5. The inlet of the pump 6 is connected to the outlet of the coolant tank 8. The outlet of the pump 6 is connected to the inlet of the air cooler 4 through a pipe. The outlet of the air cooler 4 is connected to the inlet of the airborne cooling system 1 through a pipe. The outlet of the airborne cooling system 1 is connected to the inlet of the coolant tank 8 through a pipe. One end of the air cooler 4 is open as an air inlet, and the other end of the air cooler 4 is provided with an air outlet. The air outlet of the air cooler 4 is connected to the air inlet of the cooling fan 2 through a flexible air duct 3.

[0019] In practice, the airborne cooling system 1 is a cooling pipeline installed inside the mining machine.

[0020] In actual use, the cooling fan 2 includes a motor and a fan. The fan contains a baffle to optimize airflow and increase air volume. The rotation of the motor drives the fan's spiral blades to rotate, creating airflow that carries away the heat from the air cooler 4.

[0021] It should be noted that by connecting the cooling fan 2, air cooler 4 and pump water tank assembly together to form an external cooling system, and by connecting the external cooling system and the onboard cooling system 1 to form a closed coolant circulation loop, the heat-generating components of the mining machine can be continuously cooled by air cooling circulation, avoiding the pollution of coal, potash and other minerals caused by water cooling with external drainage.

[0022] In this embodiment, the air cooler 4 includes an air cooler housing 41, with an air inlet and an air outlet respectively located at both ends of the air cooler housing 41. A spirally arranged cooling pipe 42 is provided inside the air cooler housing 41. The liquid inlet of the cooling pipe 42 extends to the outside of the air cooler housing 41 and is connected to the outlet of the pump 6. The liquid outlet of the cooling pipe 42 extends to the outside of the air cooler housing 41 and is connected to the liquid inlet of the airborne cooling system 1.

[0023] In this embodiment, the top two ends of the air cooler housing 41 are respectively provided with perforations for the two ends of the cooling pipe 42 to pass through.

[0024] In this embodiment, a grid-shaped protective net 43 is provided at the air inlet of the air cooler housing 41.

[0025] In actual use, the grid-like protective net 43 can effectively prevent large particles of impurities from entering the air cooler housing 41 and damaging the cooling pipes 42, thus playing a protective role.

[0026] In this embodiment, each spiral ring of the cooling pipe 42 is arranged in a U-shape.

[0027] In this embodiment, the cooling pipe 42 is a copper pipe.

[0028] In actual use, each spiral ring of the cooling pipe 42 is arranged in a U-shape, which effectively increases the heat dissipation area in the same space. When the high-temperature coolant passes through the cooling pipe 42, the copper cooling pipe 42 absorbs the temperature in the coolant. The airflow generated by the cooling fan 2 carries away the surface temperature of the cooling pipe 42 after passing through the air cooler 4, thus cooling the coolant.

[0029] In this embodiment, the inlet of the coolant tank 8 is positioned higher than the outlet.

[0030] In this embodiment, the outer frame 5 is provided with a plurality of lifting lugs 9.

[0031] In actual use, the sides and top of the outer frame 5 are covered with sheet metal.

[0032] In this embodiment, a filter is provided inside the coolant tank 8.

[0033] In actual use, the filter is a filter screen vertically installed inside the coolant tank. The inlet and outlet of the coolant tank 8 are located on both sides of the filter screen. A drain port is provided at the bottom of the side of the coolant tank 8 near the inlet. When the coolant tank 8 has been used for a certain period of time and a large amount of impurities have accumulated inside, the drain port is opened to allow the impurities to be discharged along with the coolant. When a certain amount of liquid has been discharged from the coolant tank 8, the drain port is closed and an appropriate amount of coolant is continued to be injected into the coolant tank 8.

[0034] It should be noted that the coolant enters the onboard cooling system 1, and its temperature rises after passing through the heat-generating components of the mining machine. It then returns to the coolant tank 8, which contains a drain outlet and a filter. The coolant is filtered as it passes through the filter, and impurities are settled and filtered out in the coolant tank 8. Once impurities accumulate to a certain level, they can be discharged through the drain outlet, maintaining the purity of the coolant. The pump motor 7 is connected to the pump 6 via a coupling. The pump motor 7 drives the pump 6 to rotate, drawing coolant from the coolant tank 8, pressurizing it, and then sending it through water pipes to the air cooler 4 for cooling.

[0035] In this embodiment, a controller 10 is also included, which is used to control the pump motor 7 and the cooling fan 2.

[0036] In actual use, the controller 10 is a PLC controller. The motors of the pump motor 7 and the cooling fan 2 are designed with temperature sensors, which are connected to the controller 10 through sensor lines to effectively detect the motor operating status. When the motor temperature is too high, the controller 10 will stop the operation of the external cooling system in time and report a fault.

[0037] In actual use, the pump motor 7 rotates to drive the pump 6 to draw coolant from the coolant tank 8 to provide power for circulation, and delivers the coolant to the air cooler 4. The coolant is cooled by air cooling, and then the coolant is delivered to the on-board cooling system 1 of the mining machine. The coolant passes through various heat-generating components of the coal mining machine, and the heated coolant returns to the coolant tank 8. In this way, the coolant is circulated, realizing the closed-loop cooling system of the mining machine.

[0038] When the air cooler 4 air-cools the coolant, the cooling fan 2 is connected to the air cooler 4 via a flexible air duct 3. The cooling fan 2 draws away the hot air from the air cooler 4, ensuring the heat exchange efficiency of the air cooler 4. The controller 10 collects the operating data of the air cooler 4 and the pump motor 7 through the control line, monitors the operating status in real time, and controls the external cooling system to promptly alarm and shut down when the operating data is abnormal, realizing online fault diagnosis.

[0039] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A closed-loop cooling system for a mining machine, characterized in that: The system includes an external cooling system and an onboard cooling system (1) connected thereto. The external cooling system includes a cooling fan (2), an air cooler (4), and a pump-water tank assembly connected in sequence. The pump-water tank assembly includes an outer frame (5) and a pump (6), a pump motor (7), and a coolant tank (8) installed in the outer frame (5). The inlet of the pump (6) is connected to the outlet of the coolant tank (8). The outlet of the pump (6) is connected to the inlet of the air cooler (4) through a pipe. The outlet of the air cooler (4) is connected to the inlet of the onboard cooling system (1) through a pipe. The outlet of the onboard cooling system (1) is connected to the inlet of the coolant tank (8) through a pipe. One end of the air cooler (4) is open as an air inlet. The other end of the air cooler (4) is provided with an air outlet. The air outlet of the air cooler (4) is connected to the air inlet of the cooling fan (2) through a flexible air duct (3).

2. A closed-loop cooling system for a mining machine according to claim 1, characterized in that: The air cooler (4) includes an air cooler housing (41), with the air inlet and air outlet respectively located at both ends of the air cooler housing (41). The air cooler housing (41) is provided with a spirally arranged cooling pipe (42). The liquid inlet of the cooling pipe (42) extends to the outside of the air cooler housing (41) and is connected to the outlet of the pump (6). The liquid outlet of the cooling pipe (42) extends to the outside of the air cooler housing (41) and is connected to the liquid inlet of the airborne cooling system (1).

3. A closed-loop cooling system for a mining machine according to claim 2, characterized in that: The top two ends of the air cooler housing (41) are respectively provided with perforations for the two ends of the cooling pipe (42) to pass through.

4. A closed-loop cooling system for a mining machine according to claim 2, characterized in that: A grid-shaped protective net (43) is provided at the air inlet of the air cooler shell (41).

5. A closed-loop cooling system for a mining machine according to claim 2, characterized in that: Each spiral ring of the cooling pipe (42) is arranged in a U-shape.

6. A closed-loop cooling system for a mining machine according to claim 2, characterized in that: The cooling pipe (42) is a copper pipe.

7. A closed-loop cooling system for a mining machine according to claim 1, characterized in that: The inlet of the coolant tank (8) is positioned higher than the outlet.

8. A closed-loop cooling system for a mining machine according to claim 1, characterized in that: The outer frame (5) is provided with multiple lugs (9).

9. A closed-loop cooling system for a mining machine according to claim 1, characterized in that: A filter is installed inside the coolant tank (8).

10. A closed-loop cooling system for a mining machine according to claim 1, characterized in that: It also includes a controller (10) for controlling the pump motor (7) and the cooling fan (2).

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