Oil exchange system for pneumatic pump

Abstract

The present invention relates to a system for automatically exchanging oil of a pneumatic pump for supplying hydraulic oil or lubricating oil to an engine, a gas turbine engine, various actuators, and various hydraulic systems of a vehicle. To this end, the present invention comprises: a vacuum pump; a pressure pump; a waste oil temporary storage tank for introducing and temporarily storing waste oil from a pneumatic pump by the suction force of the vacuum pump, and discharging the waste oil by the pressing force of the pressure pump; a new oil temporary storage tank for introducing and temporarily storing new oil by the suction force of the vacuum pump, and discharging the new oil to the pneumatic pump by the pressing force of the pressure pump; a waste liquid tank for accommodating the waste oil discharged from the waste oil temporary storage tank; and a new oil tank for accommodating the new oil, and discharging the accommodated new oil to the new oil temporary storage tank by the suction force transmitted from the new oil temporary storage tank.

Description

Oil change system for pneumatic pumps

[0001] The present invention relates to a system for automatically exchanging operating oil or lubricating oil in a pneumatic pump used in various pneumatic systems, actuators, etc.

[0002] In general, pneumatic pumps used in various pneumatic systems, actuators, etc. are supplied with operating oil or lubricating oil so that they perform functions such as lubrication, cooling, sealing, rust prevention, stress distribution, and cleaning by the supplied oil.

[0003] An example of how these pneumatic pumps are used as vacuum pumps is that vacuum pumps are used to remove air within a chamber to create a vacuum within the chamber or to expel unreacted gases remaining within the chamber.

[0004] There are several types of vacuum pumps, including oil-based vacuum pumps and vacuum pumps that maintain vacuum by cooling molecules. Among these, oil-based vacuum pumps are divided into dry types that use internal oil and wet types that use external oil.

[0005] In processes that utilize vacuum pumps, the role of the vacuum pump is very important because if the vacuum pump suddenly stops, the product inside the chamber may be defective.

[0006] The major factors that cause the operation of a vacuum pump, or pneumatic pump, to stop are oil contamination and insufficient oil. If the oil level is insufficient, it must be replenished.

[0007] Therefore, it is necessary to periodically check the oil amount, and Patent Publication No. 10-2005-0118418 discloses an oil replenishment time alarm device for a vacuum pump that notifies the time to replenish oil in a vacuum pump used in semiconductor manufacturing equipment, the oil replenishment time alarm device for a vacuum pump including two probes that are parallel to each other and have portions of the same length inserted into the vacuum pump, a control unit that applies a predetermined electric signal to one of the probes and receives an electric signal detected from the other probe, and a display unit that is connected to the control unit and displays it when the time to replenish oil is determined by the control unit.

[0008] However, this type of oil change technology has the problem that it can only warn of insufficient oil and cannot automatically replace contaminated oil.

[0009] In other words, the oil supplied to the pneumatic pump must be replaced regularly depending on whether it is contaminated. If proper replacement is not performed, problems such as reduced performance, corrosion and wear of parts, and sludge formation due to reaction with foreign substances may occur.

[0010] Therefore, since the replacement of these oils is usually done mainly by hand, there is a problem that manpower and cost are consumed as the replacement time increases, and work efficiency varies greatly depending on the skill level of the worker.

[0011] <Prior Art Literature>

[0012] 1. Republic of Korea Patent Publication No. 10-2005-0118418

[0013] (Vacuum pump oil refill time alarm device)

[0014] The purpose of the present invention is to provide an oil exchange system for a pneumatic pump that can automatically, quickly, and accurately exchange the oil of the pneumatic pump in order to solve such conventional problems.

[0015] In order to achieve the above purpose, the oil exchange system for a pneumatic pump according to the present invention is:

[0016] vacuum pump;

[0017] pressure pump;

[0018] A waste oil temporary storage tank that temporarily stores waste oil by drawing it in from a pneumatic pump using the suction force of the vacuum pump and discharges the waste oil using the pressurizing force of the pressurizing pump;

[0019] A new oil temporary storage tank that temporarily stores new oil by introducing it using the suction power of the vacuum pump and then discharges the new oil to the pneumatic pump using the pressurizing power of the pressurizing pump;

[0020] A waste oil tank that receives waste oil flowing out from the above waste oil temporary storage tank;

[0021] It is characterized by comprising a new oil container that receives new oil and discharges the received new oil into the new oil temporary storage container by suction force transmitted from the new oil temporary storage container.

[0022] In addition, a first valve of a 3-way valve type that selectively supplies suction power and pressurization power of the vacuum pump and pressurization pump;

[0023] A second valve of a three-way valve type that selectively supplies suction and pressure supplied from the first valve to the waste oil temporary storage tank and the new oil temporary storage tank;

[0024] A third valve provided between the temporary waste oil storage tank and the waste liquid tank;

[0025] A fourth valve provided between the temporary waste oil storage tank and the pneumatic pump;

[0026] A fifth valve provided between the new oil temporary storage tank and the new oil tank;

[0027] A sixth valve provided between the new oil temporary storage tank and the pneumatic pump;

[0028] A pressure sensor installed between the first valve and the second valve to sense pressure according to vacuum and pressurization;

[0029] A first level sensor that senses the level of waste oil stored in the temporary waste oil storage tank;

[0030] A second level sensor that senses the level of new oil contained in the new oil temporary storage tank;

[0031] It is characterized in that it further comprises a controller which controls the vacuum pump and the pressurizing pump by values ​​sensed from the pressure sensor, the first level sensor, and the second level sensor, and controls the first to ninth valves so that the waste oil of the pneumatic pump is temporarily stored in the waste oil temporary storage tank by the suction force generated from the vacuum pump, the waste oil temporarily stored in the waste oil temporary storage tank by the pressurizing force generated from the pressurizing pump, the new oil of the new oil tank is temporarily stored in the new oil temporary storage tank by the suction force generated from the vacuum pump, and the new oil temporarily stored in the new oil temporary storage tank is introduced into the pneumatic pump by the pressurizing force generated from the pressurizing pump.

[0032] The oil exchange system for a pneumatic pump according to the present invention, configured as described above, reduces the exchange time by automatically exchanging oil, thereby bringing about the effect of saving manpower and costs, and also has the advantage of allowing accurate oil exchange work to be performed regardless of the skill level of the worker.

[0033] Figure 1 is a diagram showing an oil exchange system for a pneumatic pump according to the present invention.

[0034] *Explanation of symbols*

[0035] 100: Vacuum pump

[0036] 200: Pressure pump

[0037] 300: Temporary storage tank for waste oil

[0038] 400: New oil temporary storage tank

[0039] 500: Waste container

[0040] 600: New oil can

[0041] 700: Pneumatic pump

[0042] 800: Controller

[0043] LS1, LS2: Level sensor

[0044] P1,P2,P3: Pipeline

[0045] S1: Pressure sensor

[0046] SV1~SV6: Valves

[0047] vacuum pump;

[0048] pressure pump;

[0049] A waste oil temporary storage tank that temporarily stores waste oil by drawing it in from a pneumatic pump using the suction force of the vacuum pump and discharges the waste oil using the pressurizing force of the pressurizing pump;

[0050] A new oil temporary storage tank that temporarily stores new oil by introducing it using the suction power of the vacuum pump and then discharges the new oil to the pneumatic pump using the pressurizing power of the pressurizing pump;

[0051] A waste oil tank that receives waste oil flowing out from the above waste oil temporary storage tank;

[0052] It is characterized by comprising a new oil container that receives new oil and discharges the received new oil into the new oil temporary storage container by suction force transmitted from the new oil temporary storage container.

[0053] The above-described objects, features and advantages are described in detail below with reference to the attached drawings, so that a person having ordinary knowledge in the technical field to which the present invention pertains can easily implement the technical idea of ​​the present invention.

[0054] In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted.

[0055] The terms used in the present invention are selected from the most widely used general terms possible while taking into consideration the functions of the present invention, but these may vary depending on the intention of a technician working in the field, precedents, the emergence of new technologies, etc.

[0056] Additionally, in certain cases, there are terms arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant invention.

[0057] Therefore, the terms used in the present invention should not be simply defined as names of terms, but should be defined based on the meaning of the terms and the overall content of the present invention.

[0058] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0059] However, the embodiments of the present invention exemplified below may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.

[0060] The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

[0061] As shown in Figure 1, the present invention is largely composed of a vacuum pump (100), a pressurizing pump (200), a waste oil temporary storage tank (300), a new oil temporary storage tank (400), a waste liquid tank (500), a new oil tank (600), and a controller (800).

[0062] The above vacuum pump (100) generates vacuum, i.e., negative pressure, and selectively provides suction power according to the negative pressure to the waste oil temporary storage tank (300) and the new oil temporary storage tank (400). This suction power is also selectively provided to the pneumatic pump (700) and the new oil tank (600) through the waste oil temporary storage tank (300) and the new oil temporary storage tank (400).

[0063] The above pressurized pump (200) generates pressurized force and selectively supplies it to a temporary storage tank for used oil (300) and a temporary storage tank for new oil (400).

[0064] The above-mentioned waste oil temporary storage tank (300) is connected to the vacuum pump (100) and the pressurized pump (200) by a first pipe (P1), and is also connected to the waste oil tank (500) and the pneumatic pump (700) by a second pipe (P2), and serves to temporarily store the waste oil sucked from the pneumatic pump (700) and then discharge it into the waste oil tank (500).

[0065] The above-mentioned new oil temporary storage tank (400) is connected to the vacuum pump (100) and the pressurized pump (200) by a first pipe (P1), and is also connected to the new oil tank (600) and the pneumatic pump (700) by a third pipe (P3), so that it temporarily stores the new oil sucked from the new oil tank (600) and then discharges it to the pneumatic pump (700).

[0066] Here, the first pipeline (P1) has a structure in which one side is branched and connected to a vacuum pump (100) and a pressure pump (200), and the other side is branched and connected to a waste oil temporary storage tank (300) and a new oil temporary storage tank (400), and the ends of the other side are hermetically connected to the upper portions of the waste oil temporary storage tank (300) and the new oil temporary storage tank (400), i.e., above the full-fill level of the oil to be received.

[0067] In addition, the second pipeline (P2) is connected to a temporary waste oil storage tank (300) on one side, and is branched and connected to a waste liquid tank (500) and a pneumatic pump (700) on the other side.

[0068] In addition, the third pipeline (P3) is connected to a new oil temporary storage tank (400) on one side, and is branched and connected to a new oil tank (600) and a pneumatic pump (700) on the other side.

[0069] It is preferable that one side of the second pipe (P2) and the third pipe (P3) be hermetically connected from the upper part of the waste oil temporary storage tank (300) and the new oil temporary storage tank (400), and that the end part be positioned as close as possible to the bottom part of the waste oil temporary storage tank (300) and the new oil temporary storage tank (400).

[0070] In addition, level sensors (LS1, LS2) are installed in the temporary storage tank for used oil (300) and the temporary storage tank for new oil (400), respectively, to sense the level of oil contained therein.

[0071] The above waste oil tank (500) receives waste oil sucked from the pneumatic pump (700) through the second pipe (P2) from the waste oil temporary storage tank (300) and receives it, and the new oil tank (600) receives new oil to be injected into the pneumatic pump (700) and then discharges it to the new oil temporary storage tank (400) through the third pipe (P3).

[0072] A first valve (SV1) and a second valve (SV2) of a 3-way valve type are installed at the branched locations of the first pipe (P1), and a third valve (SV3) is installed between the waste oil temporary storage tank (300) and the waste liquid tank (500) in the second pipe (P2), and a fourth valve (SV4) is installed between the waste oil temporary storage tank (300) and the pneumatic pump (700).

[0073] In addition, in the third pipeline (P3), a fifth valve (SV5) is installed between the new oil temporary storage tank (400) and the new oil tank (600), and a sixth valve (SV6) is installed between the new oil temporary storage tank (400) and the pneumatic pump (700).

[0074] In addition, a pressure sensor (S1) is installed between the first valve (SV1) and the second valve (SV2) installed in the first pipe (P1) to sense the negative pressure by the vacuum pump (100) and the pressurizing force by the pressurizing pump (200).

[0075] The above valves (SV1 to SV6) are composed of solenoid valves.

[0076] The above controller (800) controls each of these valves (SV1 to SV6) to automatically perform oil exchange by receiving the waste oil of the pneumatic pump (700) in the waste oil tank (500) and injecting new oil from the new oil tank (600) into the pneumatic pump (700).

[0077] This oil change procedure is described in detail.

[0078] Waste oil treatment

[0079] First, when the oil exchange mode is set in the controller (800), the controller (800) operates the vacuum pump (100) and switches the first valve (SV1) and the second valve (SV2) so that the first pipe (P1) connects the vacuum pump (100) and the waste oil temporary storage tank (300).

[0080] At this time, the setting of the oil change mode can be set manually or automatically by sensing the change cycle, oil viscosity or turbidity, oil amount, etc.

[0081] The pressure value sensed from the above pressure sensor (S1) is input to the controller (800), and when it is determined that the vacuum pressure of the first pipe (P1) has reached the set pressure, the controller (800) opens the fourth valve (SV4) so ​​that the waste oil of the pneumatic pump (700) is received in the waste oil temporary storage tank (300) through the second pipe (P2) by the suction force of the negative pressure.

[0082] During this operation process, the controller (800) controls the third valve (SV3), the fifth valve (SV5), and the sixth valve (SV6) to be closed.

[0083] Afterwards, if the vacuum pressure of the first pipe (P1) is lowered to the set pressure and released, this means that the waste oil has been received from the pneumatic pump (700) into the waste oil temporary storage tank (300) by the vacuum pressure, and therefore, the controller (800) stops the operation of the vacuum pump (100) and then switches the first valve (SV1) to connect the pressurized pump (200) and the waste oil temporary storage tank (300), and at the same time closes the fourth valve (SV4) and opens the third valve (SV3).

[0084] Accordingly, by pressurizing the waste oil temporarily stored in the waste oil temporary storage tank (300) by the pressurizing force of the pressurizing pump (200), the waste oil is moved to the waste tank (500) through the second pipe (P2) and stored therein, and since one end of the second pipe (P2) is positioned close to the bottom of the waste oil temporary storage tank (300), all of the waste oil can be moved to the waste tank (500) without being left behind.

[0085] And, when the pressure value sensed by the pressure sensor (S1) rises and then falls due to the pressurizing force of the pressurizing pump (200), this means that the pressure is applied to the waste oil temporary storage tank (300) and the waste oil is received in the waste liquid tank (500), so the controller (800) stops the operation of the pressurizing pump (200) and closes the first valve (SV1) and the third valve (SV3), thereby ending the mode of sucking and removing the waste oil from the pneumatic pump (700).

[0086] In addition, when the level of waste oil flowing into the waste oil temporary storage tank (300) is detected by the first level sensor (LS1) and reaches the full level, i.e., the full water level, an operation is performed to move the stored waste oil to the waste liquid tank (500), and thereafter, an operation of temporarily storing waste oil in the waste oil temporary storage tank (300) from the pneumatic pump (700) and an operation of moving the temporarily stored waste oil to the waste liquid tank (500) are repeatedly performed.

[0087] This is to prevent the waste oil stored in the waste oil temporary storage tank (300) from flowing back toward the first pipe (P1) and to allow all the waste oil from the pneumatic pump (700) to be sucked up and stored in the waste liquid tank (500).

[0088] New oil injection

[0089] When the removal of waste oil from the pneumatic pump (700) is completed, the controller (800) operates the vacuum pump (100) and switches the first valve (SV1) and the second valve (SV2) so that the first pipe (P1) connects the vacuum pump (100) and the new oil temporary storage tank (400).

[0090] The pressure value sensed from the above pressure sensor (S1) is input to the controller (800), and when it is determined that the vacuum pressure of the first pipe (P1) has reached the set pressure, the controller (800) opens the fifth valve (SV5) so that the new oil in the new oil tank (600) is received into the new oil temporary storage tank (400) through the third pipe (P3) by the suction force due to the negative pressure.

[0091] During this operation process, the controller (800) controls the third valve (SV3), the fourth valve (SV4), and the sixth valve (SV6) to be closed.

[0092] Afterwards, if the vacuum pressure of the first pipe (P1) is lowered to the set pressure, this means that new oil has been received from the new oil tank (600) to the new oil temporary storage tank (400) by the vacuum pressure, so the controller (800) stops the operation of the vacuum pump (100) and then switches the first valve (SV1) to connect the pressurizing pump (200) and the new oil temporary storage tank (400), and at the same time closes the fifth valve (SV5) and opens the sixth valve (SV6).

[0093] Accordingly, by pressurizing the new oil temporarily stored in the new oil temporary storage tank (400) by the pressurizing force of the pressurizing pump (200), the new oil is moved to the pneumatic pump (700) through the third pipe (P3) and injected, and since one end of the third pipe (P3) is positioned close to the bottom of the new oil temporary storage tank (400), all of the new oil can be moved to the pneumatic pump (700) without leaving any behind.

[0094] And, when the pressure value sensed by the pressure sensor (S1) rises and then falls due to the pressurizing force of the pressurizing pump (200), this means that the pressure is applied to the new oil temporary storage tank (400) and the new oil is injected into the pneumatic pump (700), so the controller (800) stops the operation of the pressurizing pump (200) and closes the first valve (SV1), the second valve (SV2), and the sixth valve (SV6), thereby ending the mode of injecting the new oil into the pneumatic pump (700).

[0095] In addition, when the level of the new oil flowing into the new oil temporary storage tank (400) is detected by the second level sensor (LS2) and reaches the full level, i.e., the full water level, an operation is performed to move the received new oil to the pneumatic pump (700), and thereafter, an operation of temporarily storing the new oil from the new oil tank (600) in the new oil temporary storage tank (400) and an operation of injecting the temporarily stored new oil into the pneumatic pump (700) are repeatedly performed.

[0096] As described above, specific parts of the present invention have been described in detail. It will be apparent to those skilled in the art that such specific descriptions are merely preferred embodiments and that the scope of the present invention is not limited thereby.

[0097] Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims

1. Vacuum pump; pressure pump; A waste oil temporary storage tank that temporarily stores waste oil by drawing it in from a pneumatic pump using the suction force of the vacuum pump and discharges the waste oil using the pressurizing force of the pressurizing pump; A new oil temporary storage tank that temporarily stores new oil by introducing it using the suction power of the vacuum pump and discharges the new oil to the pneumatic pump by the pressurizing power of the pressurizing pump; A waste oil tank that receives waste oil flowing out from the above waste oil temporary storage tank; An oil change system for a pneumatic pump, characterized in that it comprises a new oil tank that receives new oil and discharges the received new oil into the new oil temporary storage tank by suction force transmitted from the new oil temporary storage tank.

2. In paragraph 1, A first valve of a 3-way valve type that selectively supplies suction power and pressurization power of the above vacuum pump and pressurization pump; A second valve of a three-way valve type that selectively supplies suction and pressure supplied from the first valve to the waste oil temporary storage tank and the new oil temporary storage tank; A third valve provided between the temporary waste oil storage tank and the waste liquid tank; A fourth valve provided between the temporary waste oil storage tank and the pneumatic pump; A fifth valve provided between the new oil temporary storage tank and the new oil tank; A sixth valve provided between the new oil temporary storage tank and the pneumatic pump; An oil exchange system for a pneumatic pump, characterized in that it further comprises a controller that controls the first to ninth valves to temporarily store waste oil of the pneumatic pump in the waste oil temporary storage tank by the suction force generated from the vacuum pump, to store waste oil temporarily stored in the waste oil tank by the pressurized force generated from the pressurized pump, to temporarily store new oil of the new oil tank in the new oil temporary storage tank by the suction force generated from the vacuum pump, and to introduce new oil temporarily stored in the new oil temporary storage tank into the pneumatic pump by the pressurized force generated from the pressurized pump.

3. In paragraph 2, A pressure sensor installed between the first valve and the second valve to sense pressure according to vacuum and pressurization; A first level sensor that senses the level of waste oil stored in the temporary waste oil storage tank; It further includes a second level sensor that senses the level of new oil contained in the new oil temporary storage tank; An oil exchange system for a pneumatic pump, characterized in that the controller controls the operation of the vacuum pump, the pressurizing pump, and the first to sixth valves based on values ​​sensed from the pressure sensor, the first level sensor, and the second level sensor.

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