Lubricating oil cooling device for hydraulic system or lubricating system of crusher

Abstract

The utility model belongs to the technical field of lubricating oil cooling of cone crushers, and particularly discloses a lubricating oil cooling device used in a hydraulic system or a lubricating system of a crusher, which comprises an oil way system and a refrigerating system. An oil inlet and an oil outlet of the plate-type evaporator are respectively connected with a lubricating oil tank in a crusher hydraulic system or a lubricating system, the refrigerating system comprises a compressor, a condenser and a thermostatic expansion valve, a gas suction inlet of the compressor is connected with a refrigerant lead-out port of the plate-type evaporator, and a gas exhaust port of the compressor is connected with a gas inlet of the condenser. And a liquid outlet of the condenser is connected with a refrigerant lead-in port of the plate type evaporator through a pipeline C and a thermostatic expansion valve. The lubricating oil cooling device used in a crusher hydraulic system or a lubricating system can cool lubricating oil in a working main engine oil tank, the cooling effect is excellent, normal full-load operation of crusher equipment is ensured, and the service life of the crusher equipment is prolonged. Production tasks are guaranteed to be completed, and production sustainability is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubricating oil cooling for cone crushers, and specifically discloses a lubricating oil cooling device for the hydraulic system or lubricating system of crushers. Background Art

[0002] During the operation of the hydraulic system or lubricating system, due to the influence of factors such as system overflow, unloading, and friction, the temperature of the hydraulic oil or lubricating oil will continue to rise. When the oil temperature exceeds a certain range, it is easy to cause problems such as aging of the oil circuit sealing ring, leakage of hydraulic valves, and abnormal working pressure, which affect production efficiency and product quality, and lead to a series of problems such as deterioration of the oil quality and even damage to working components. At present, in order to meet the normal oil temperature, the existing cone crushers in China mostly use two air or oil coolers, one in front and one behind, to cool the lubricating oil. This method has a large equipment investment, high operating costs, and is difficult to maintain during operation due to the easy blockage of the cooler, resulting in high maintenance costs and general cooling effects. To meet the working needs of cone crushers in metal and non-metal mines and make the cone crushers operate more reliably and efficiently, the oil cooling systems for the hydraulic systems and lubricating systems of cone crushers urgently need to be innovated. Summary of the Invention

[0003] To solve the problems in the background art, the utility model discloses a lubricating oil cooling device for the hydraulic system or lubricating system of crushers, which can effectively cool the temperature of the lubricating oil, ensure the normal full-load operation of the crusher equipment, guarantee the completion of production tasks, and reduce the occurrence of equipment accidents.

[0004] To achieve the above invention purpose, the utility model adopts the following technical solutions:

[0005] A lubricating oil cooling device for the hydraulic system or lubricating system of crushers includes an oil circuit system and a refrigeration system. The oil circuit system includes a plate evaporator, and the oil inlet and outlet of the plate evaporator are respectively connected to the lubricating oil tank in the hydraulic system or lubricating system of the crusher through oil inlet and outlet pipelines. The refrigeration system includes a compressor, a condenser, and a thermostatic expansion valve. The gas suction port of the compressor is connected to the refrigerant outlet of the plate evaporator through Pipeline A, the gas discharge port of the compressor is connected to the inlet of the condenser through Pipeline B, and the liquid outlet of the condenser is connected to the refrigerant inlet of the plate evaporator through Pipeline C and the thermostatic expansion valve.

[0006] Furthermore, for the lubricating oil cooling device for the hydraulic system or lubricating system of crushers, a liquid storage cylinder is provided on Pipeline C between the condenser and the thermostatic expansion valve, and the liquid storage cylinder is arranged at one end of Pipeline C adjacent to the condenser.

[0007] Furthermore, the lubricating oil cooling device for the hydraulic or lubrication system of the crusher has a drying filter installed on the pipe C between the condenser and the thermal expansion valve. The drying filter is used to dry and filter the refrigerant and is installed at one end of the pipe C near the thermal expansion valve.

[0008] Furthermore, the lubricating oil cooling device for the hydraulic or lubrication system of the crusher has a condenser fan installed above the condenser. The low-temperature air generated by the condenser fan can pass through the condenser, exchange heat with the refrigerant, and then be discharged from the exhaust port.

[0009] Furthermore, the lubricating oil cooling device for the hydraulic or lubrication system of the crusher includes a circulating oil pump installed on the oil inlet pipe between the oil inlet of the plate evaporator and the oil tank.

[0010] Furthermore, the lubricating oil cooling device for the hydraulic or lubrication system of the crusher also includes a programmable controller and temperature sensors respectively installed on the inlet and outlet oil pipes adjacent to the inlet and outlet of the plate evaporator. The programmable controller is electrically connected to the temperature sensors and the controllers of the compressor, condenser and thermostatic expansion valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model relates to a lubricating oil cooling device for the hydraulic or lubrication system of a crusher. It includes an oil circuit system and a refrigeration system. The oil circuit system includes a plate evaporator, whose inlet and outlet are connected to the lubricating oil tank in the crusher's hydraulic or lubrication system via inlet and outlet pipes. The refrigeration system includes a compressor, a condenser, and a thermostatic expansion valve. The compressor's gas inlet is connected to the refrigerant outlet of the plate evaporator via pipe A, and the compressor's gas outlet is connected to the condenser's gas inlet via pipe B. The condenser's liquid outlet is connected to the refrigerant inlet of the plate evaporator via pipe C and the thermostatic expansion valve. This device, used in the hydraulic or lubrication system of a crusher, can cool the lubricating oil in the main engine's oil tank, maintaining it within a certain temperature range. In summer, the lubricating oil temperature of the cone crusher can be reduced by 10-15℃ compared to its original temperature, providing excellent cooling performance. This ensures the crusher operates normally at full load, guarantees the completion of production tasks, reduces equipment accidents, ensures production sustainability, and has low purchase and maintenance costs. Installation is relatively simple, and operation is convenient and quick. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the lubricating oil cooling device of this utility model;

[0014] In the above diagram: 1-Compressor; 2-Condenser; 3-Condenser fan; 4-Liquid receiver; 5-Filter; 6-Thermal expansion valve; 7-Plate evaporator; 8-Circulating oil pump; 9-Oil tank. Detailed Implementation

[0015] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0016] Combined with appendix Figure 1 This invention details a device for cooling lubricating oil in a hydraulic or lubrication system of a crusher. The device includes an oil circuit system and a refrigeration system. The oil circuit system includes a plate evaporator 7, whose inlet and outlet ports are connected to a lubricating oil tank 9 in the crusher's hydraulic or lubrication system via inlet and outlet pipes. The refrigeration system includes a compressor 1, a condenser 2, and a thermostatic expansion valve 6. The gas inlet of the compressor 1 is connected to the refrigerant outlet of the plate evaporator 7 via pipe A, and the gas outlet of the compressor 1 is connected to the gas inlet of the condenser 2 via pipe B. The liquid outlet of the condenser 2 is connected to the refrigerant inlet of the plate evaporator 7 via pipe C and the thermostatic expansion valve 6. When the refrigeration system is working, the compressor 1 draws in refrigerant gas, compresses it into a high-temperature, high-pressure gas, and then discharges it into the condenser 2. In the condenser 2, the high-temperature, high-pressure refrigerant gas interacts with the low-temperature airflow generated by the condenser fan 3 that passes through the condenser 2. Heat exchange occurs, causing the high-temperature, high-pressure refrigerant gas to condense into a normal-temperature, high-pressure liquid. Simultaneously, the low-temperature inlet air becomes high-temperature outlet air and is discharged. The normal-temperature, high-pressure refrigerant liquid flows to the thermostatic expansion valve 6, where it is throttled into a low-temperature, low-pressure liquid before entering the plate evaporator 7. The thermostatic expansion valve controls its opening based on the superheat of the gaseous refrigerant at the evaporator outlet, thus it is widely used in non-flooded evaporators. Inside the plate evaporator 7, the low-temperature, low-pressure refrigerant liquid exchanges heat with the simultaneously entering, higher-temperature oil, causing the low-temperature, low-pressure liquid refrigerant to absorb heat and evaporate into a low-temperature, low-pressure gas. Finally, it is drawn into the compressor 1 for recirculation. The higher-temperature oil is cooled and flows out of the plate evaporator, returning to the lubricating oil tank 9 in the crusher's hydraulic or lubrication system. This effectively cools the lubricating oil temperature in the crusher's oil tank 9, ensuring the crusher operates normally at full load, guaranteeing the completion of production tasks, and reducing equipment accidents.

[0017] As an optional design, the preferred lubricating oil cooling device for the hydraulic or lubrication system of the crusher includes a liquid storage tank 4 on the pipe C between the condenser 2 and the thermal expansion valve 6. The liquid storage tank 4 is located at one end of the pipe C near the condenser 2 and is used to temporarily store the room-temperature, high-pressure refrigerant liquid condensed and discharged by the condenser 2.

[0018] As an optional design, the preferred lubricating oil cooling device for the hydraulic or lubrication system of the crusher includes a dryer filter 5 installed on the pipe C between the condenser 2 and the thermal expansion valve 6. The dryer filter 5 is used to dry and filter impurities in the refrigerant and is located at one end of the pipe C near the thermal expansion valve 6.

[0019] As an optional design, the preferred lubricating oil cooling device for the hydraulic or lubrication system of the crusher has a condenser fan 3 installed above the condenser 2. The low-temperature air generated by the condenser fan 3 can pass through the condenser 2, exchange heat with the refrigerant, and then be discharged from the exhaust port. It should be noted that the connection structure between the condenser 2 and the condenser fan 3 is existing technology, so the condenser 2, the condenser fan 3, and their connection structure will not be described in detail.

[0020] As an optional design, the preferred lubricating oil cooling device for the crusher's hydraulic or lubrication system includes a circulating oil pump 8 installed on the oil inlet pipe between the oil inlet of the plate evaporator 7 and the oil tank 9. The circulating oil pump 8 pumps the higher-temperature lubricating oil from the oil tank 9 to the plate evaporator 7. The higher-temperature lubricating oil exchanges heat with the low-temperature, low-pressure liquid refrigerant in the plate evaporator 7, causing the low-temperature, low-pressure liquid refrigerant to absorb heat and evaporate into a low-temperature, low-pressure gas. Finally, the gas is drawn into the compressor 1 for recirculation. After being cooled, the higher-temperature lubricating oil flows out of the plate evaporator 7 and returns to the lubricating oil tank 9 in the crusher's hydraulic or lubrication system, effectively cooling the temperature of the lubricating oil in the crusher's oil tank 9.

[0021] As an optional design, the preferred lubricating oil cooling device for the hydraulic or lubrication system of the crusher further includes a programmable controller and temperature sensors respectively installed on the inlet and outlet oil pipes adjacent to the inlet and outlet of the plate evaporator 7. The programmable controller is used to detect and control the oil temperature by controlling the start and stop of the refrigeration system. The programmable controller is electrically connected to the temperature sensors and the controllers of the compressor 1, condenser 2, and thermal expansion valve 6. It should be noted that the programmable controller is a Siemens S7-200 PLC. During operation, the temperature sensors installed on the inlet and outlet oil pipes adjacent to the inlet and outlet of the plate evaporator 7 detect the oil temperature at the inlet and outlet of the plate evaporator 7 and send the oil temperature information to the programmable controller. The device compares the real-time monitored oil temperature with the set refrigeration temperature. When the measured oil temperature is higher than the refrigeration set value plus the temperature difference (internal setting is 5℃), the programmable controller sends a start command to the compressor 1, condenser 2, and thermostatic expansion valve 6 controllers, and the refrigeration system starts running. This cools the oil entering the plate evaporator 7 at a higher temperature and returns it to the oil tank 9 for mixing, ensuring that the oil temperature in the oil tank 9 is controlled within the specified temperature range to meet the oil temperature requirements of the cooled equipment. When the measured oil temperature is lower than the refrigeration set value, the programmable controller sends a stop command to the compressor 1, condenser 2, and thermostatic expansion valve 6 controllers, and the refrigeration system stops running. The automatic control of the lubricating oil temperature is achieved through the lubricating oil cooling device in the hydraulic system or lubrication system of the crusher of this utility model.

[0022] The working process of this utility model is as follows:

[0023] During operation, the temperature sensors at the oil inlet and outlet of the plate evaporator 7 detect the oil temperature at the oil inlet and outlet of the plate evaporator 7 and send the oil temperature information to the programmable controller. The programmable controller compares the real-time monitored oil temperature with the set value of the cooling temperature.

[0024] When the measured oil temperature exceeds the refrigeration setpoint plus temperature difference (internal setting is 5℃), the programmable controller sends a start command to the compressor 1, condenser 2, and thermostatic expansion valve 6 controllers. The refrigeration system then operates. Compressor 1 draws in refrigerant gas, compresses it into a high-temperature, high-pressure gas, and then discharges it into condenser 2. In condenser 2, the high-temperature, high-pressure refrigerant gas exchanges heat with the low-temperature intake air generated by the condenser fan 3, causing the high-temperature, high-pressure refrigerant gas to condense into a room-temperature, high-pressure liquid. This room-temperature, high-pressure refrigerant liquid then circulates... After reaching the thermal expansion valve 6, the liquid, throttled by the thermal expansion valve 6 into a low-temperature, low-pressure liquid, enters the plate evaporator 7. Inside the plate evaporator 7, it exchanges heat with the higher-temperature oil that enters at the same time, causing the low-temperature, low-pressure liquid refrigerant to absorb heat and evaporate into a low-temperature, low-pressure gas. Finally, it is drawn into the compressor 1 for recirculation. The higher-temperature oil is cooled down and flows out of the plate evaporator, returning to the lubricating oil tank 9 in the crusher's hydraulic system or lubrication system. This ensures that the oil temperature in the tank 9 is controlled within the specified temperature range to meet the oil temperature requirements of the cooled equipment.

[0025] When the measured oil temperature is lower than the refrigeration set value, the programmable controller sends a stop command to the compressor 1, condenser 2 and thermostatic expansion valve 6 controllers, and the refrigeration system stops operating. Through the lubricating oil cooling device in the hydraulic system or lubrication system of the crusher of this utility model, the temperature of the lubricating oil in the crusher oil tank 9 is effectively cooled, ensuring that the crusher equipment operates normally at full load, ensuring the completion of production tasks, and reducing the occurrence of equipment accidents.

[0026] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for cooling lubricating oil in a hydraulic system or lubricating system of a crusher, characterized in that: The oil circuit system comprises a plate evaporator, and the inlet and outlet oil ports of the plate evaporator are connected with the lubricating oil tank in the crusher hydraulic system or lubricating system through inlet and outlet oil pipelines respectively.

2. The device for cooling lubricating oil in a hydraulic system or lubricating system of a crusher according to claim 1, characterized in that: A liquid storage cylinder is arranged on the pipeline C between the condenser and the thermal expansion valve, and the liquid storage cylinder is arranged at one end of the pipeline C adjacent to the condenser.

3. The device for cooling the lubricating oil in the hydraulic system or lubricating system of a crusher according to claim 2, characterized in that: A drying filter is arranged on the pipeline C between the condenser and the thermal expansion valve, and the drying filter is used for drying and filtering the refrigerant, and is arranged at one end of the pipeline C adjacent to the thermal expansion valve.

4. The device for cooling lubricating oil in a hydraulic system or lubricating system of a crusher according to claim 3, characterized in that: A condensing fan is arranged above the condenser, and low-temperature air generated by the condensing fan can be discharged from the air outlet after heat exchange with the refrigerant.

5. The device for cooling the lubricating oil in the hydraulic system or lubricating system of a crusher according to claim 3, characterized in that: A circulating oil pump is arranged on the inlet oil pipeline between the oil inlet port of the plate evaporator and the oil tank.

6. The device for cooling lubricating oil in a hydraulic system or a lubricating system of a crusher according to any one of claims 1-5, characterized in that: A programmable controller and temperature sensors arranged on the inlet and outlet oil pipelines adjacent to the inlet and outlet oil ports of the plate evaporator are further included, and the programmable controller is electrically connected with the temperature sensors and the controllers of the compressor, the condenser and the thermal expansion valve.

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