Trace oil supply lubricating system capable of automatically adjusting flow of lubricating oil

Abstract

The utility model relates to the technical field of lubricating systems, in particular to a trace oil supply lubricating system capable of automatically adjusting lubricating oil flow, which comprises an oil tank and an oil supply pump, an oil pumping port of the oil supply pump is communicated with the oil tank, an oil outlet of the oil supply pump is communicated with a load lubricating point through an oil supply main pipeline, and an oil supply flowmeter is mounted at the oil supply end of the oil supply main pipeline. The oil pumping end of the oil supply main pipeline is communicated with the oil tank through an adjusting pipeline, a sequence valve and an automatic adjusting flowmeter are installed on the adjusting pipeline, and the automatic adjusting flowmeter, the oil supply flowmeter and the oil supply pump are respectively communicated with a control device. When the system outputs in a full flow mode, the maximum output flow is 35 ml / min, and when the working condition of a main engine changes and needs low flow, the automatic throttling flow meter enables redundant lubricating oil to flow back into an oil tank through the sequence valve and the automatic throttling flow meter, accurate flow adjustment is remotely achieved, output pressure is not affected, and the system is suitable for large-scale production. Great convenience is provided for on-site use and maintenance, and great lubrication cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lubrication systems, in particular to a micro-oil supply lubrication system capable of automatically adjusting the flow of lubricating oil. Background Art

[0002] Currently, micro-oil lubrication systems are widely used. The effectiveness of thin oil lubrication is directly related to the precise flow rate of lubricant. When the flow rate is too high, oil leaks may occur at the lubrication point, contaminating the workpiece and increasing product rejection rates. This also results in lubricant waste. When the flow rate is insufficient, lubrication points lack oil, preventing adequate lubrication and heat dissipation at the bearings, ultimately leading to bearing damage and production line downtime.

[0003] In actual production processes, the operating speed of the main machine will vary due to the different products being produced, and therefore the requirements for lubricating oil flow will also vary. Currently, the micro-oil lubrication system mainly uses two methods to adjust the lubrication flow.

[0004] The first method is to install a manual throttle valve at the lubricating oil station outlet to manually control the output flow. This method is low-cost, but requires personnel to visit the oil station for manual adjustment, which is not accurate and requires repeated adjustments to lock in the target flow.

[0005] The second method is motor frequency conversion. By adjusting the motor's output speed, the oil pump's output flow rate is controlled. This adjustment method allows for remote operation, but minimal-quantity lubrication motors typically have power less than 0.2 kW, and there are no dedicated low-power variable-frequency motors on the market. Long-term low-frequency, low-speed operation can lead to motor overheating and eventual burnout. Furthermore, excessively low speeds can cause internal leakage in the gear pump, preventing the oil pressure from reaching the operating pressure and preventing the oil from being delivered to the lubrication points. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a micro-oil supply lubrication system that can remotely and in real time adjust the flow rate according to the different lubrication needs of the host, greatly facilitates on-site operation and maintenance, adjusts accurately and quickly, does not require manual participation, has a long motor service life, ensures the output pressure of the system, and reduces the cost of use. It can automatically adjust the flow rate of lubricating oil.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a micro-oil supply lubrication system that automatically adjusts the flow of lubricating oil, including an oil tank and an oil supply pump, the oil suction port of the oil supply pump is connected to the oil tank, the oil outlet of the oil supply pump is connected to the load lubrication point through the oil supply main line, the oil supply end of the oil supply main line is equipped with an oil supply flow meter, the oil suction end of the oil supply main line is connected to the oil tank through an adjusting pipeline, a sequence valve and an automatic regulating flow meter are installed on the regulating pipeline, and the automatic regulating flow meter, the oil supply flow meter and the oil supply pump are respectively connected to a control device.

[0008] As a preferred technical solution, the oil tank is connected to a plurality of the oil supply pumps, and each of the oil supply pumps is respectively connected to a group of the oil supply main lines.

[0009] As an optimal technical solution, the oil tank is connected to a spare oil supply pump, which is connected to the oil supply pumps through spare oil pipes. A spare ball valve is installed on the spare oil pipes, and the spare oil supply pump and the spare ball valve are respectively connected to the control device.

[0010] As a preferred technical solution, a duplex filter is further installed on the oil supply main line. The duplex filter is located at the front end of the oil supply flow meter. A one-way valve is installed on the oil supply main line at the front end of the duplex filter.

[0011] As a preferred technical solution, the oil supply main line is connected to a return line at the rear end of the duplex filter, the return line is connected to the oil tank, and a safety valve is installed on the return line.

[0012] As a preferred technical solution, a pressure gauge is installed on the oil supply main line between the duplex filter and the oil supply flow meter.

[0013] As a preferred technical solution, a visual liquid level gauge and a liquid level switch are installed on the oil tank, and the liquid level switch is connected to the control device.

[0014] As a preferred technical solution, an electric heater is installed on the oil tank, and a temperature switch for monitoring the oil temperature is also installed on the oil tank, and the temperature switch and the electric heater are respectively connected to the control device.

[0015] As a preferred technical solution, an air filter is installed on the fuel tank.

[0016] Due to the adoption of the above technical scheme, a micro-oil supply lubrication system that automatically adjusts the flow rate of lubricating oil includes an oil tank and an oil supply pump, the oil suction port of the oil supply pump is connected to the oil tank, the oil outlet of the oil supply pump is connected to the load lubrication point through the oil supply main line, the oil supply end of the oil supply main line is equipped with an oil supply flow meter, the oil suction end of the oil supply main line is connected to the oil tank through an adjusting line, a sequence valve and an automatic regulating flow meter are installed on the regulating line, and the automatic regulating flow meter, the oil supply flow meter and the oil supply pump are respectively connected to a control device; the beneficial effect of the utility model is that after the control system of the control device is started, the oil supply pump draws the lubricating oil from the oil tank, and the oil directly enters the lubrication point through the oil supply main line and the oil flow meter, or enters the lubrication point after secondary distribution through a progressive distributor. When the system is outputting at full flow, the maximum output flow is 35ml / min. When the main engine operating conditions change and a low flow is required, the control device in the main control room will issue a low flow demand. At this time, the automatic throttling flowmeter will open to a certain angle, allowing the excess lubricating oil to flow back to the oil tank through the sequence valve and the automatic throttling flowmeter. During this process, the oil supply flowmeter will provide real-time feedback on the outlet flow. When the outlet flow reaches the target value, the control device in the main control room will issue a command to stop the automatic throttling flowmeter from adjusting. Since the set pressure of the sequence valve is 10bar, it can be guaranteed that the output oil pressure will not be lower than 10bar. Therefore, the utility model can not only remotely realize precise flow adjustment, but also make the output pressure unaffected, which provides great convenience for on-site use and maintenance, and can also save a lot of lubrication costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0018] Figure 1 This is a structural diagram of the micro-oil supply lubrication system for automatically adjusting the lubricating oil flow rate of the utility model;

[0019] Figure 2 This is a schematic diagram of a micro-supply lubrication system for automatically adjusting the flow of lubricating oil according to the utility model.

[0020] In the figure: 1-fuel tank; 2-fuel supply pump; 3-fuel supply main line; 4-fuel supply flowmeter; 5-sequence valve; 6-regulating pipeline; 7-automatic regulating flowmeter; 8-spare fuel supply pump; 9-spare fuel pipe; 10-spare ball valve; 11-double-tube filter; 12-check valve; 13-return pipeline; 14-safety valve; 15-pressure gauge; 16-visual level gauge; 17-liquid level switch; 18-electric heater; 19-temperature switch; 20-air filter; 21-oil drain ball valve. DETAILED DESCRIPTION

[0021] The present invention is further described below with reference to the accompanying drawings and examples. In the detailed description that follows, certain exemplary embodiments of the present invention are described by way of illustration only. It goes without saying that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0022] like Figure 1 and Figure 2 As shown together, a micro-oil lubrication system for automatically adjusting the flow of lubricating oil comprises an oil tank 1 and an oil supply pump 2. The oil suction port of the oil supply pump 2 is connected to the oil tank 1, and the oil outlet of the oil supply pump 2 is connected to the load lubrication point through the oil supply main line 3. The oil supply end of the oil supply main line 3 is equipped with an oil supply flowmeter 4. The oil suction end of the oil supply main line 3 is connected to the oil tank 1 through an adjusting line 6. A sequence valve 5 and an automatic regulating flowmeter 7 are installed on the regulating line 6. The automatic regulating flowmeter 7, the oil supply flowmeter 4 and the oil supply pump 2 are respectively connected to a control device; after the control system of the control device is started, the oil supply pump 2 draws the lubricating oil from the oil tank 1, and the oil enters the lubrication point directly through the oil supply main line 3 and the oil supply flowmeter 4, or enters the lubrication point after secondary distribution through a progressive distributor. When the system is outputting at full flow, the maximum output flow is 35ml / min. When the main engine operating conditions change and a low flow is required, the control device in the main control room issues a low flow demand. At this time, the automatic throttling flowmeter will open to a certain angle, allowing the excess lubricating oil to flow back to the oil tank 1 through the sequence valve 5 and the automatic throttling flowmeter. During this process, the oil supply flowmeter 4 will provide real-time feedback on the outlet flow. When the outlet flow reaches the target value, the control device in the main control room will issue a command to stop the automatic throttling flowmeter from adjusting. Since the set pressure of the sequence valve 5 is 10bar, it can be ensured that the output oil pressure will not be lower than 10bar. Therefore, the utility model can not only remotely realize precise flow adjustment, but also make the output pressure unaffected, which provides great convenience for on-site use and maintenance, and can also save a lot of lubrication costs.

[0023] like Figure 1 and Figure 2 As shown, multiple oil pumps 2 are connected to the oil tank 1, each of which is connected to a set of oil supply mains 3. This embodiment uses two oil pumps 2 and two oil supply mains 3 as an example. The two oil supply mains 3 simultaneously supply oil to two load lubrication points. However, multiple shared pumps and multiple oil supply mains 3 can also be installed to supply oil to multiple loads. Each oil supply main 3 operates independently, improving oil supply efficiency.

[0024] like Figure 1 and Figure 2As shown, the oil tank 1 is connected to a backup oil pump 8, which is connected to the oil pump 2 through a backup oil pipe 9. A backup ball valve 10 is installed on the backup oil pipe 9. The backup oil pump 8 and the backup ball valve 10 are respectively connected to the control device. The backup oil pump 8 is designed to prevent the failure of the oil pump 2. When the oil pump 2 fails, the control device controls the backup oil pump 8 to replace the failed oil pump 2 and controls the backup ball valve 10 to open, extracting the lubricating oil in the oil tank 1 and supplying it to the original oil supply main line 3 to supply oil to the load lubrication point. The number of backup oil pumps 8 is set to one. No matter which oil pump 2 fails, the backup oil pump 8 can be activated to replace the failed oil pump 2.

[0025] like Figure 1 and Figure 2 As shown, a duplex filter 11 is also installed on the main oil supply line 3. This filter is located in front of the oil flowmeter 4. A check valve 12 is also installed in front of the filter 11. Also known as a double-barrel return oil line filter, this filter 11 consists of two single-barrel filters and a two-position, six-way reversing valve. It features a simple structure and ease of use. It also includes a bypass valve and a filter element contamination indicator to ensure system safety. This filter 11 filters and intercepts various impurities, including abrasive particles, from the oil line, ensuring the purity of the lubricating oil before it is added to the load lubrication point.

[0026] like Figure 1 and Figure 2 As shown, a return line 13 is connected to the main oil supply line 3 at the rear end of the duplex filter 11. This line is connected to the oil tank 1 and is equipped with a safety valve 14. If the oil supply to the load lubrication point fails, the lubricating oil can flow back to the oil tank 1 through the return line 13. The safety valve 14 is a one-way valve 12 that only allows the lubricating oil to flow back to the oil tank 1, thus preventing lubricating oil loss.

[0027] like Figure 1 and Figure 2 As shown in the figure, a pressure gauge 15 is installed on the oil supply main line 3 between the double-cylinder filter 11 and the oil supply flow meter 4. The pressure gauge 15 can observe the pressure of the oil supply main line 3 in real time.

[0028] like Figure 1 and Figure 2 As shown in the figure, the fuel tank 1 is equipped with a visual level gauge 16 and a level switch 17, which is connected to the control device. The visual level gauge 16 is used to observe the liquid level in the fuel tank 1, and the level switch 17 monitors the liquid level in the fuel tank 1 in real time and transmits the liquid level value to the control device.

[0029] like Figure 1 and Figure 2As shown, the fuel tank 1 is equipped with an electric heater 18 and a temperature switch 19 for monitoring the oil temperature. The temperature switch 19 and the electric heater 18 are each connected to a control device. The electric heater 18 heats the lubricating oil in the fuel tank 1 to prevent poor lubricating oil supply when the temperature is too low. The temperature switch 19 monitors the lubricating oil temperature in real time and transmits the temperature value to the control device.

[0030] like Figure 1 and Figure 2 As shown in the figures, an air filter 20 is installed on the oil tank 1. The air filter 20 can filter the air entering the oil tank 1 to ensure the purity of the lubricating oil.

[0031] like Figure 1 and Figure 2 As shown in the figures, an oil drain ball valve 21 is also installed on the oil tank 1 for draining the oil in the oil tank 1 .

[0032] The utility model has the following advantages:

[0033] (1) Compared with manual adjustment, the utility model remotely adjusts the flow rate without the need to go to the lubricating oil station for operation.

[0034] (2) No human intervention is required, and all operations are controlled by the control device.

[0035] (3) Compared with variable frequency regulation, the motor of the oil supply pump 2 of the present invention uses a conventional motor, operates within the normal frequency, and has a long motor service life; the sequence valve 5 can stabilize the pressure of the system and will not cause pressure loss or insufficient pressure.

[0036] (4) The utility model can accurately and quickly adjust the lubricating oil output flow to the target value while ensuring the output pressure of the system.

[0037] The technical features of the software and circuit programs involved in this application belong to the existing technology. The essence of the technical solution of this application is to improve the composition and connection relationship of the hardware part, and does not involve improvements to the software program or circuit structure itself.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A micro-supply lubrication system for automatically regulating the flow of lubricating oil, comprising an oil tank (1) and an oil supply pump (2), characterized in that: The oil pumping port of the oil supply pump (2) is connected to the oil tank (1), and the oil outlet of the oil supply pump (2) is connected to the load lubrication point through the oil supply main line (3). The oil supply end of the oil supply main line (3) is equipped with an oil supply flow meter (4). The oil pumping end of the oil supply main line (3) is connected to the oil tank (1) through a regulating line (6). A sequence valve (5) and an automatic regulating flow meter (7) are installed on the regulating line (6). The automatic regulating flow meter (7), the oil supply flow meter (4) and the oil supply pump (2) are respectively connected to a control device.

2. The micro-supply lubrication system for automatically adjusting the flow of lubricating oil according to claim 1, characterized in that: The oil tank (1) is connected to a plurality of oil supply pumps (2), and each of the oil supply pumps (2) is connected to a group of the oil supply main lines (3).

3. The micro-supply lubrication system for automatically adjusting the flow of lubricating oil according to claim 2, characterized in that: The oil tank (1) is connected to a spare oil supply pump (8), and the spare oil supply pump (8) is connected to the oil supply pump (2) through a spare oil pipe (9). A spare ball valve (10) is installed on the spare oil pipe (9), and the spare oil supply pump (8) and the spare ball valve (10) are respectively connected to the control device.

4. The micro-supply lubrication system for automatically adjusting the lubricating oil flow rate according to claim 1, characterized in that: A double-barrel filter (11) is also installed on the main oil supply line (3), and the double-barrel filter (11) is located at the front end of the oil supply flow meter (4). A one-way valve (12) is installed on the main oil supply line (3) at the front end of the double-barrel filter (11).

5. The micro-supply lubrication system for automatically adjusting the flow rate of lubricating oil according to claim 4, characterized in that: The oil supply main line (3) is connected to a return line (13) at the rear end of the duplex filter (11), the return line (13) is connected to the oil tank (1), and a safety valve (14) is installed on the return line (13).

6. The micro-supply lubrication system for automatically adjusting the flow of lubricating oil according to claim 4, characterized in that: A pressure gauge (15) is installed on the oil supply main line (3) between the duplex filter (11) and the oil supply flow meter (4).

7. The micro-supply lubrication system for automatically adjusting the flow of lubricating oil according to claim 1, characterized in that: A visual liquid level gauge (16) and a liquid level switch (17) are installed on the oil tank (1), and the liquid level switch (17) is connected to the control device.

8. The micro-supply lubrication system for automatically adjusting the flow of lubricating oil according to claim 1, characterized in that: An electric heater (18) is installed on the oil tank (1), and a temperature switch (19) for monitoring the oil temperature is also installed on the oil tank (1). The temperature switch (19) and the electric heater (18) are respectively connected to the control device.

9. The micro-supply lubrication system for automatically adjusting the lubricating oil flow rate according to any one of claims 1 to 8, characterized in that: An air filter (20) is installed on the oil tank (1).

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