Oil pre-supply system

Abstract

The utility model discloses a pre-oil-supply system, belongs to the technical field of engines, and solves the problems that an existing pre-oil-supply system cannot extract and replace engine oil in an oil pan, the time consumed by manual operation is long, and the efficiency is low. The oil pre-supply system comprises an oil pan and further comprises a base, the oil pan is provided with a connecting pipe communicated with the oil pan, the other end of the connecting pipe is provided with a three-way connector, one port of the three-way connector is provided with a first pipeline, the other port of the three-way connector is provided with a second pipeline, and the first pipeline is communicated with the second pipeline. A pre-oil-supply pump is arranged at the other end of the first pipeline, an engine oil pipe is arranged at the output end of the pre-oil-supply pump, a plurality of pre-oil-supply pipes are arranged in the middle of the engine oil pipe, a first stop valve is arranged in each pre-oil-supply pipe, and a second stop valve is arranged at the outlet end of the engine oil pipe; the ends, away from the engine oil pipe, of the multiple oil pre-supply pipes jointly communicate with an oil outlet pipe. According to the oil pre-supply system, the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, and more specifically, it relates to a pre-oiling system. Background Art

[0002] At present, small and medium-sized engines do not have a pre-lubrication system, and large engines do not have a dedicated pre-lubrication system either. For large engines, only a pre-oil pump is added on the basis of the original engine lubrication system. Generally, the pre-oil pump sucks engine oil from the oil pan and then enters the engine's cooling and lubrication system. The engine oil flows through the oil filter, oil cooler, and engine oil passages, and finally reaches each lubrication point of the engine.

[0003] For example, in the engine pre-lubrication system with the patent number CN109707482A, the engine pre-lubrication system includes: an oil pan for storing engine oil; a pre-oil pump whose suction port is connected to the oil pan through a pipeline to suck engine oil from the oil pan, and the pre-oil pump pressurizes the engine oil and pumps it out from the outlet; a one-way valve connected to the outlet of the pre-oil pump for controlling the one-way flow of engine oil; an oil filter connected to the one-way valve for filtering and cleaning the engine oil; and an engine oil passage whose inlet is connected to the oil filter and whose outlet is connected to each lubrication point of the engine. However, this engine pre-lubrication system only has an oil supply function and cannot extract and replace the engine oil inside the oil pan. Especially for large engines, when there is no additional engine oil extraction device, replacing the engine oil requires manual operation, which is difficult and time-consuming, and the efficiency of maintenance and repair is relatively low. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a pre-oiling system aiming at the above deficiencies of the prior art, which is convenient for the overall machine maintenance, effectively shortens the maintenance time required, improves the maintenance efficiency, and reduces the labor intensity of workers.

[0005] The technical solution of the utility model is as follows: a pre-oiling system includes an oil pan and also includes a base. A connecting pipe communicating with the oil pan is provided on the oil pan. The other end of the connecting pipe is provided with a three-way joint. One port of the three-way joint is provided with a first pipeline, and the other port of the three-way joint is provided with a second pipeline. The other end of the first pipeline is provided with a pre-oil pump. An engine oil pipe is provided at the output end of the pre-oil pump. A plurality of pre-oil supply pipes are provided in the middle of the engine oil pipe. A first stop valve is provided in each of the pre-oil supply pipes. A second stop valve is provided at the outlet end of the engine oil pipe. The ends of the plurality of pre-oil supply pipes far from the engine oil pipe are commonly connected to an oil outlet pipe. An oil pump is provided at one end of the second pipeline. The output end of the oil pump is communicated with the oil outlet pipe. The pre-oil pump, the first stop valve, and the second stop valve are all electrically connected to a controller. The pre-oil pump and the engine oil pipe are both installed on the base.

[0006] Further, there are two pre-supply oil pipes.

[0007] Further, a check valve is provided in each of the pre-supply oil pipes, and the flow direction of the check valve is from the oil pipe to the outlet pipe.

[0008] Further, a corrugated hose is provided on the pre-supply oil pipe, and the corrugated hose is located between the check valve and the first stop valve.

[0009] Further, sealing rings are provided between the three-way joint and the first pipe, the second pipe, and the connecting pipe, and the sealing rings are O-shaped sealing rings.

[0010] Further, the base includes an upper mounting plate and a bottom plate. A plurality of support rods are provided on the bottom plate, and the top of the support rods is connected to the bottom of the upper mounting plate. The pre-supply oil pump and the oil pipe can be detachably mounted on the upper mounting plate.

[0011] Further, a rubber buffer pad is provided between the upper mounting plate and the pre-supply oil pump.

[0012] Beneficial effects

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. For the pre-supply oil system of the present invention, by controlling the pre-supply oil pump and the switching of the first stop valve and the second stop valve through the controller, the engine oil in the oil sump can be replaced, which is convenient for the overall machine maintenance, effectively shortens the maintenance time, and reduces the labor intensity of workers.

[0015] 2. For the pre-supply oil system of the present invention, after the engine stops, the pre-supply oil pump and the oil pump are controlled by the controller to transport the engine oil in the oil sump to the supercharger to lubricate and cool the supercharger, which can protect the supercharger and effectively extend the service life of the supercharger. Description of the drawings

[0016] Figure 1 is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 is a sectional structural diagram of the base in the present invention.

[0018] Wherein: 1 - oil sump, 2 - connecting pipe, 3 - first pipe, 4 - pre-supply oil pump, 5 - oil pipe, 6 - pre-supply oil pipe, 7 - first stop valve, 8 - second stop valve, 9 - outlet pipe, 10 - check valve, 11 - second pipe, 12 - oil pump, 13 - base, 14 - corrugated hose, 15 - upper mounting plate, 16 - bottom plate, 17 - support rod, 18 - rubber buffer pad. Specific embodiments

[0019] The following further describes the present utility model with reference to specific embodiments in the accompanying drawings.

[0020] Refer to Figure 1-2 , a pre-oiling system, including an oil pan 1, further including a base 13. The oil pan 1 is provided with a connecting pipe 2 communicating therewith. The other end of the connecting pipe 2 is provided with a three-way joint. One port of the three-way joint is provided with a first pipeline 3, and the other port of the three-way joint is provided with a second pipeline 11. The first pipeline 3 and the second pipeline 11 are communicated with the connecting pipe 2 through the three-way joint; the other end of the first pipeline 3 is provided with a pre-oil pump 4, the output end of the pre-oil pump 4 is provided with an oil pipe 5, and multiple pre-oil pipes 6 are provided in the middle of the oil pipe 5. A first stop valve 7 is provided in each pre-oil pipe 6, and a second stop valve 8 is provided at the outlet end of the oil pipe 5. The ends of the multiple pre-oil pipes 6 far from the oil pipe 5 are commonly communicated with an oil outlet pipe 9. One end of the second pipeline 11 is provided with an oil pump 12, and the output end of the oil pump 12 is communicated with the oil outlet pipe 9. The pre-oil pump 4, the first stop valve 7, and the second stop valve 8 are all electrically connected to the controller. The pre-oil pump 4 and the oil pipe 5 are both installed on the base 13; during normal pre-oiling, the second stop valve 8 is in a closed state, the first stop valve 7 is in an open state, and the controller controls the pre-oil pump 4 to rotate forward. The engine oil passes from the oil pan 1 through the connecting pipe 2, the first pipeline 3, the oil pipe 5, and the pre-oil pipes 6 to reach the oil outlet pipe 9, thereby transporting the engine oil to the pipelines of each lubrication system of the engine. When the engine starts and runs normally, the oil pump 12 starts to run simultaneously, and the controller controls the pre-oil pump 4 to stop. The engine oil passes from the oil pan 1 through the connecting pipe 2 and the second pipeline 11 to reach the oil outlet pipe 9, thereby transporting the engine oil to the pipelines of each lubrication system of the engine; when the engine stops and the post-lubrication function is adopted, the controller controls the pre-oil pump 4 to rotate forward. The engine oil passes from the oil pan 1 through the connecting pipe 2, the first pipeline 3, the oil pipe 5, and the pre-oil pipes 6 to reach the oil outlet pipe 9, thereby transporting the engine oil to the supercharger to lubricate and cool the supercharger and prevent the supercharger from being damaged; when it is necessary to replace the engine oil in the oil pan 1, the first stop valve 7 is in a closed state, the second stop valve 8 is in an open state, and the controller controls the pre-oil pump 4 to rotate forward. The engine oil in the oil pan 1 reaches the oil pipe 5 through the connecting pipe 2 and then flows out of the oil pipe 5, so that the engine oil in the oil pan 1 can be easily pumped out. Then the controller controls the pre-oil pump 4 to rotate in reverse, and the engine oil in the fuel tank can be pumped into the oil pan 1 through the pre-oil pump 4, thereby achieving the purpose of replacing the engine oil. This pre-oiling system can replace the engine oil through the pre-oil pump, which is convenient for the overall machine maintenance, effectively shortens the maintenance time required, and reduces the labor intensity of workers.

[0021] Preferably, when the pre-feed oil pump 4 rotates forward, the first cut-off valve 7 is opened, and the second cut-off valve 8 is closed, the engine oil in the oil sump 1 can be transported through the connecting pipe 2, the first pipeline 3, the oil pipe 5, the pre-feed oil pipe 6, and the outlet pipe 9, and then delivered to the pipelines of each lubrication system of the engine; when the first cut-off valve 7 is closed and the second cut-off valve 8 is opened, the engine oil in the oil sump 1 can be pumped out through the connecting pipe 2, the first pipeline 3, and the oil pipe 5, achieving the effect of pumping out the engine oil in the oil sump 1. When the pre-feed oil pump 4 rotates in reverse, the engine oil in the fuel tank can be transported to the oil sump 1 through the oil pipe 5, the first pipeline 3, and the connecting pipe 2, thereby achieving the purpose of replacing the engine oil in the oil sump 1.

[0022] In this embodiment, there are two pre-feed oil pipes 6; by increasing the number of pre-feed oil pipes 6 between the outlet pipe 9 and the oil pipe 5, the engine oil flow rate can be effectively increased, and each lubrication system pipeline of the engine can be fully lubricated during the pre-feed stage.

[0023] In this embodiment, a check valve 10 is provided in each pre-feed oil pipe 6, and the flow direction of the check valve 10 is from the oil pipe 5 to the outlet pipe 9; when the pre-feed oil pump 4 stops and the oil pump 12 operates, it can prevent the engine oil in the outlet pipe 9 from flowing from the pre-feed oil pipe 6 to the oil pipe 5.

[0024] In this embodiment, a corrugated hose 14 is provided on the pre-feed oil pipe 6, and the corrugated hose 14 is located between the check valve 10 and the first cut-off valve 7; when the pre-feed oil pump 4 or the oil pump 12 is in a working state, the pre-feed oil pump 4 or the oil pump 12 will generate vibrations. If the pre-feed oil pump 4 or the oil pump 12 is affected by vibrations for a long time, the firmness of its installation and the connection with the pipeline will become loose, resulting in oil leakage and other situations. Installing the corrugated hose 14 on the pre-feed oil pipe 6 can avoid the influence of vibrations on the oil pump 12 or the pre-feed oil pump 4.

[0025] In this embodiment, sealing rings are provided between the three-way joint and the first pipeline 3, the second pipeline 11, and the connecting pipe 2. The three-way joint is connected to the first pipeline 3, the second pipeline 11, and the connecting pipe 2 through flanges, which is convenient for quick installation and disassembly; the sealing ring is an O-ring, which can effectively enhance the sealing performance between the three-way joint and the first pipeline 3, the second pipeline 11, and the connecting pipe 2.

[0026] In this embodiment, the base 13 includes an upper mounting plate 15 and a bottom plate 16. Multiple support rods 17 are provided on the bottom plate 16, and the top of the support rods 17 is connected to the bottom of the upper mounting plate 15. The pre-feed oil pump 4 and the oil pipe 5 can be detachably mounted on the upper mounting plate 15; a plurality of mounting holes are provided on the upper mounting plate 15, and the upper mounting plate 15 is connected to the pre-feed oil pump 4 and the oil pipe 5 through bolts, which is convenient for repairing and replacing the pre-feed oil pump 4 and replacing the oil pipe 5.

[0027] In this embodiment, a rubber buffer pad 18 is provided between the upper mounting plate 15 and the pre-feed oil pump 4, enabling a flexible contact between the pre-feed oil pump 4 and the upper mounting plate 15, effectively reducing the impact of vibrations generated during the operation of the pre-feed oil pump 4 on the upper mounting plate 15, and avoiding the loosening of the connection between the upper mounting plate 15 and the pre-feed oil pump 4 caused by long-term vibrations.

[0028] The above are only the preferred embodiments of the present utility model. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can be made, which will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A pre-oiling system, comprising an oil sump (1), characterized in that, It further includes a base (13). The oil pan (1) is provided with a connecting pipe (2) communicating therewith. The other end of the connecting pipe (2) is provided with a tee joint. One port of the tee joint is provided with a first pipe (3), and the other port of the tee joint is provided with a second pipe (11). The other end of the first pipe (3) is provided with a pre-feed oil pump (4). The output end of the pre-feed oil pump (4) is provided with an engine oil pipe (5). A plurality of pre-feed oil pipes (6) are provided in the middle of the engine oil pipe (5). A first stop valve (7) is provided in each of the pre-feed oil pipes (6). The outlet end of the engine oil pipe (5) is provided with a second stop valve (8). The ends of the plurality of pre-feed oil pipes (6) far from the engine oil pipe (5) are commonly communicated with an oil outlet pipe (9). One end of the second pipe (11) is provided with an oil pump (12). The output end of the oil pump (12) is communicated with the oil outlet pipe (9). The pre-feed oil pump (4), the first stop valve (7), and the second stop valve (8) are all electrically connected to a controller. The pre-feed oil pump (4) and the engine oil pipe (5) are both installed on the base (13).

2. The pre-oiling system according to claim 1, characterized in that, There are two pre-feed oil pipes (6).

3. The pre-oiling system according to claim 2, characterized in that, A check valve (10) is provided in each of the pre-feed oil pipes (6). The flow direction of the check valve (10) is from the engine oil pipe (5) to the oil outlet pipe (9).

4. A pre-oiling system according to claim 3, characterized in that, A corrugated hose (14) is provided on the pre-feed oil pipe (6). The corrugated hose (14) is located between the check valve (10) and the first stop valve (7).

5. The pre-oiling system according to claim 1, characterized in that, Sealing rings are provided between the tee joint and the first pipe (3), the second pipe (11), and the connecting pipe (2). The sealing rings are O-ring seals.

6. The pre-oiling system according to claim 1, characterized in that, The base (13) includes an upper mounting plate (15) and a bottom plate (16). A plurality of support rods (17) are provided on the bottom plate (16). The top of the support rod (17) is connected to the bottom of the upper mounting plate (15). The pre-feed oil pump (4) and the engine oil pipe (5) are both detachably installed on the upper mounting plate (15).

7. The pre-oiling system according to claim 6, characterized in that, A rubber buffer pad (18) is provided between the upper mounting plate (15) and the pre-feed oil pump (4).

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