Integrated fine filtration system for gear box

Abstract

The utility model discloses an integrated fine filtration system for a gear box, which is integrated with a traditional main lubricating system of the gear box and comprises an oil pump device, a main filter device, a cooler device and a fine filter device, filtered lubricating oil is distributed through a temperature control valve or a pressure valve and directly returns to the gear box or flows to the cooler device to be cooled and then flows back to the gear box, an inlet of the fine filter device is connected to a hot oil outlet of the main filter device, an outlet of the fine filter device is connected with the gear box, and pressure oil of an oil outlet of the main filter device flows into the fine filter device to be filtered and then returns to the gear box. A control valve is arranged at an inlet of the fine filter device to control flow or pressure of lubricating oil passing through the fine filter device. The fine filtration system and a traditional main lubrication system are integrated, an independent oil pump device of the traditional fine filtration system is omitted, and the fine filtration system has the advantages of being simple in structure, reliable in performance and capable of reducing cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear box lubrication systems, and more specifically, is an integrated fine filtering system for a gear box. Background Art

[0002] The gearbox lubrication system is one of the key subsystems of the gearbox. The downtime loss caused by a gearbox failure is extremely large. The gearbox lubrication system is to ensure the smooth operation of the gearbox.

[0003] At present, the traditional main lubrication system is mainly composed of an oil pump, a filter device, and a cooler device. Some high-power gearbox lubrication systems are also equipped with an independent oil tank to store lubricating oil. In order to improve the cleanliness level of the lubricating oil, filter out the water in the oil, and keep the lubricating oil from deteriorating for a long time, the prior art also adds a bypass fine filtration system that is independent of the main lubrication system. The fine filtration system includes a filter body and an electric oil pump device. The motor in the electric oil pump device is very prone to failure, which reduces the reliability of the fine filtration system, and the cost of the electric pump device is high. Summary of the invention

[0004] The purpose of the utility model is to integrate the fine filter device in the prior art into the main lubrication system, remove the electric pump device of the fine filter system without affecting the function and performance of the main lubrication system, increase the reliability of the system and reduce the cost of the system.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A fine filtration system applied to a gearbox, which is integrated with a conventional main lubrication system of the gearbox, comprises an oil pump device, a main filter device, a cooler device, and a fine filter device. In addition, for a high-power gearbox, an independent oil tank device may be provided between the oil pump device and the gearbox for storing lubricating oil.

[0007] Furthermore, the oil pump device is an electric pump group, a mechanical pump group, or a combined pump group of an electric pump and a mechanical pump. The number of pump groups can be one or more. The oil pump suction port is connected to the gear box or an independent oil tank, and the oil discharge port is connected to the main filter device. The oil pump device mainly provides pressurized oil for the lubrication system.

[0008] Furthermore, the main filter device is a double-precision filter, which mainly filters particulate impurities in the lubricating oil. The number of filter elements in the main filter device can be one or more, and a temperature control valve or a pressure valve is set at the oil outlet to distribute the filtered lubricating oil directly back to the gear box distributor or to flow to the cooler device for cooling and heat exchange.

[0009] Furthermore, the cooler device is an air cooler or a water-cooled heat exchanger, and can be a single cooler or multiple coolers used in parallel, and the lubricating oil cooled by the cooler directly flows back to the gear box distributor.

[0010] Furthermore, the inlet of the fine filter device is connected to the hot oil outlet of the main filter device, and the outlet of the fine filter device is connected to the gear box. The pressure oil at the hot oil outlet of the main filter device flows into the fine filter device through this branch, and is directly returned to the gear box after being filtered by the fine filter device.

[0011] Furthermore, the oil inlet of the fine filter device is provided with a control valve to control the pressure or flow entering the fine filter device.

[0012] Furthermore, the control valve of the fine filter device may be a throttle valve, a speed regulating valve, or a solenoid valve.

[0013] Furthermore, a pressure sensor, a pressure gauge, a pressure switch or a pressure difference transmitter etc. can be provided on the main body of the fine filter device as required, so as to monitor the state of the fine filter device and determine the time to replace the filter element.

[0014] Furthermore, a sampling port, a sewage outlet, etc. can be provided on the body of the fine filter device as required. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the system principle of the utility model.

[0016] In the figure: 1-gear box, 11-gear box distributor, 2-oil pump device, 3-main filter device, 31-overflow valve, 32-coarse precision filter, 33-high precision filter, 34-pressure difference transmitter, 35-temperature control valve or pressure valve, 351-hot oil outlet, 352-cold oil outlet, 4-fine filter device, 41-drain port, 42-pressure sensor, 43-control valve, 44-pressure switch, 45-pressure gauge, 46-fine filter element, 47-sampling port, 5-cooler device. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with specific embodiments and drawings. Embodiment 1

[0018] like Figure 1 As shown, a fine filter system applied to a gear box is integrated with a conventional main lubrication system of the gear box, and comprises: an oil pump device 2, a main filter device 3, a cooler device 5, and a fine filter device 4.

[0019] like Figure 1As shown, the oil pump device 2 can be an electric pump, a mechanical pump, or a combination of an electric pump and a mechanical pump. The number of oil pumps can be one or more. The oil pump suction port is connected to the gear box 1, and the oil discharge port is connected to the main filter device 3. The oil pump device mainly provides pressure oil for the lubrication system.

[0020] like Figure 1 As shown, the main filter device 3 mainly filters particulate impurities in the lubricating oil, is set to double-precision filtering, and is provided with a coarse-precision filter 32 and a high-precision filter 33. When the high-precision filter 33 is blocked, the coarse-precision filter 32 can be used for filtering to avoid failure of the lubrication system causing gear box failure. At the same time, the pressure difference transmitter 34 alarms to prompt the replacement of the filter element; the oil inlet of the main filter device 3 is provided with a relief valve 31 to avoid damage to the system due to excessive pressure in the lubrication system; the oil outlet of the main filter device 3 is provided with a temperature control valve or a pressure valve 35 for distributing the flow direction of the filtered lubricating oil, the cold oil outlet 352 is directly connected to the gear box distributor 11, and the hot oil outlet 351 is connected to the cooler device 5 to guide the lubricating oil to the cooler device 5 for cooling and heat exchange.

[0021] like Figure 1 As shown, the cooler device 5 is an air cooler or a water-cooled heat exchanger, and can be a single cooler or multiple coolers used in parallel. The lubricating oil flows directly back to the gear box distributor 11 after being cooled by the cooler device 5 .

[0022] like Figure 1 As shown, the inlet of the fine filter device 4 is connected to the hot oil outlet 351 of the main filter device 3, and the outlet of the fine filter device 4 is connected to the gear box 1. The pressurized lubricating oil at the hot oil outlet 351 flows into the fine filter device 4 through this branch, and is directly returned to the gear box after being filtered by the fine filter device 4.

[0023] like Figure 1 As shown, the oil inlet of the fine filter device 4 is provided with a control valve 43 to control the pressure or flow entering the fine filter device. The control valve 43 is a mechanical speed regulating valve.

[0024] like Figure 1 As shown, the fine filter device 4 is provided with a pressure sensor 42, a pressure gauge 45, and a pressure switch 44 as required, for monitoring the state of the fine filter device 4 or determining the time to replace the filter element.

[0025] like Figure 1 As shown, the body of the fine filter device 4 is provided with a sampling port 47 and a drain port 41 as required, which can be used for draining oil and sampling oil during filter element maintenance. Embodiment 2

[0026] Embodiment 2 is a fine filter system applied to a gearbox, which is integrated with a conventional main lubrication system of the gearbox, and includes: an oil pump device 2, a main filter device 3, a cooler device 5, and a fine filter device 4. The main difference between Embodiment 2 and Embodiment 1 is that the control valve 43 is replaced with a combination of a solenoid valve and a throttle valve in series, and the main control system of the gearbox can flexibly control the on and off of the solenoid valve as needed, thereby achieving the purpose of flexibly enabling or disabling the fine filter branch.

[0027] In the above embodiments, interfaces such as pressure measuring points and sampling points can be set or cancelled at various nodes of the lubrication system and the fine filtration system according to actual needs.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated fine filtration system for a gearbox, characterized in that: The fine filter system is integrated with the traditional main lubrication system of the gearbox, including: an oil pump device, a main filter device, a cooler device, and a fine filter device. The oil pump device draws lubricating oil from the gearbox and pumps it into the main filter device. The filtered lubricating oil is distributed through a temperature control valve or a pressure valve and directly returns to the gearbox or flows to the cooler device for cooling and then flows back to the gearbox. The inlet of the fine filter device is connected to the hot oil outlet of the main filter device, and the outlet of the fine filter device is connected to the gearbox. The pressure oil at the oil outlet of the main filter flows into the fine filter device for filtration and then returns to the gearbox. A control valve is set at the inlet of the fine filter device to control the flow or pressure of the lubricating oil passing through the fine filter device.

2. The integrated fine filtration system for a gearbox according to claim 1, characterized in that: The fine filter device is provided with a sewage outlet before filtering and a sampling port after filtering.

3. The integrated fine filtration system for a gearbox according to claim 1, characterized in that: For high-power gearboxes, an independent oil tank device may be provided between the oil pump device and the gearbox to store lubricating oil.

4. The integrated fine filtration system for a gearbox according to claim 1, characterized in that: The oil pump device can be an electric pump group, a mechanical pump group, or a combination of an electric pump and a mechanical pump. The number of the pump groups can be one or more.

5. The integrated fine filtration system for a gearbox according to claim 1, characterized in that: The cooler device can be an air cooler, a water-cooled heat exchanger, and the number can be one or more.

6. The integrated fine filtration system for a gearbox according to claim 1, characterized in that: The main filter device may have one or more filter elements.

7. The integrated fine filtration system for a gearbox according to claim 1, characterized in that: The control valve arranged at the inlet of the fine filter device can be a speed regulating valve, a throttle valve, a solenoid valve, or a combination thereof.

8. The integrated fine filtration system for a gearbox according to claim 1, characterized in that: A pressure sensor, a pressure gauge and a pressure switch are provided before the fine filter device.

Images