A hinge lubricating oil recovery device and a recovery method thereof

Abstract

A hinge lubricating oil recovery device and a recovery method thereof, the hinge lubricating oil recovery device comprising a filter box and an oil collecting box, the filter box being provided with a primary filter cavity, a transition cavity and an oil-water separation cavity, the primary filter cavity being connected with the transition cavity at the upper portion, the transition cavity and the oil-water separation cavity being communicated through an oil pump assembly, the primary filter cavity being provided with a filter mechanism and a magnetic attraction mechanism, the magnetic attraction mechanism being located below the filter mechanism, the transition cavity being provided with a first sensing assembly, the oil-water separation cavity being provided with a second sensing assembly and a timer, the oil-water separation cavity being connected with the oil collecting box through an oil outlet mechanism, the oil-water separation cavity being provided with a drainage mechanism at the bottom, the oil pump assembly being respectively communicated with the first sensing assembly and the timer, the timer being communicated with the drainage mechanism, and the second sensing assembly being respectively communicated with the oil outlet mechanism and the drainage mechanism. The hinge lubricating oil recovery device can realize the recovery of lubricating oil, and further realize the recycling of lubricating oil, thereby greatly reducing the waste of resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding machines, in particular to a hinge lubricating oil recovery device and a recovery method thereof. BACKGROUND

[0002] The hinge of an injection molding machine needs to be lubricated when moving, and part of the lubricating oil flows out of the hinge through the gap between the steel sleeve and the pin shaft, falls on the frame, and is contaminated by water, dust, iron filings and other impurities on the frame, so it cannot be directly recycled and reused, causing waste.

[0003] Therefore, it is necessary to make further improvements. SUMMARY

[0004] The present application aims to provide a hinge lubricating oil recovery device and a recovery method thereof, which has the advantages of simple structure, good filtering effect, recycling of lubricating oil, and strong practicability, to overcome the shortcomings of the prior art.

[0005] A hinge lubricating oil recovery device designed for this purpose is characterized by comprising a filter box and an oil collecting tank, a primary filter cavity, a transition cavity and an oil-water separation cavity are arranged in the filter box, the primary filter cavity is connected to the transition cavity at the upper part, the transition cavity and the oil-water separation cavity are communicated through an oil pump assembly, a filtering mechanism and a magnetic attraction mechanism are arranged on the primary filter cavity, the magnetic attraction mechanism is located below the filtering mechanism, a first sensing assembly is arranged in the transition cavity, a second sensing assembly and a timer are arranged in the oil-water separation cavity, the oil-water separation cavity is connected to the oil collecting tank through an oil outlet mechanism, a drainage mechanism is arranged at the bottom of the oil-water separation cavity, the oil pump assembly is respectively connected to the first sensing assembly and the timer in communication, the timer is connected to the drainage mechanism in communication, and the second sensing assembly is respectively connected to the oil outlet mechanism and the drainage mechanism in communication.

[0006] The filtering mechanism comprises an oil inlet and a first filter screen, the magnetic attraction mechanism comprises a buffer plate and a magnetic frame, the oil inlet is arranged at the top of the primary filter cavity, the first filter screen is arranged on the oil inlet and connected to the oil inlet, the buffer plate is arranged below the first filter screen, and the buffer plate is inclined and arranged with a gap between the bottom end and the cavity wall of the primary filter cavity, and the magnetic frame is arranged on the buffer plate.

[0007] A viewing port for observing the inside of the primary filter cavity and a slope plate for carrying impurities are arranged at the bottom of the primary filter cavity.

[0008] The first sensing assembly comprises a first float guide rod, a first float and a first sensing switch, the first float guide rod is installed at the bottom of the transition cavity, the first float is movably arranged on the first float guide rod, the first sensing switch is arranged above the first float, the first sensing switch is connected to the oil pump assembly in communication, and the first float acts on the first sensing switch when it moves upward to the corresponding position.

[0009] The second induction assembly comprises a second float guide rod, a second float and a second induction switch. The second float guide rod is installed at the bottom of the oil-water separation chamber. The second float is movably arranged on the second float guide rod. The second induction switch is arranged below the second float. The second float acts on the second induction switch when it moves downward to a corresponding position.

[0010] The oil outlet mechanism comprises an oil outlet pipe and a first directional valve arranged on the oil outlet pipe. The oil-water separation chamber is connected to the oil collecting tank through the oil outlet pipe. The height of the oil outlet pipe is higher than that of the second induction switch. The second induction switch is communicatively connected to the first directional valve.

[0011] The drainage mechanism comprises a drainage pipe arranged at the bottom of the oil-water separation chamber and a second directional valve arranged on the drainage pipe. The second directional valve is communicatively connected to the timer and the second induction switch.

[0012] The primary filtering chamber and the transition chamber are separated by a first partition plate. The transition chamber and the oil-water separation chamber are separated by a second partition plate. The second filtering net is arranged on the first partition plate. The primary filtering chamber and the transition chamber are connected to each other through the second filtering net.

[0013] The oil pump assembly comprises an oil pump, an oil inlet pipe and an oil outlet pipe. One end of the oil inlet pipe is connected to the oil pump, and the other end of the oil inlet pipe extends into the lower part of the transition chamber. One end of the oil outlet pipe is connected to the oil pump, and the other end of the oil outlet pipe extends into the middle part of the oil-water separation chamber.

[0014] A recovery method of a machine hinge lubricating oil recovery device designed for the purpose, characterized in that it comprises the following steps:

[0015] 1) Pour the contaminated lubricating oil into the primary filtering chamber. After filtering out the large impurities through the filtering mechanism, the lubricating oil falls onto the magnetic attraction mechanism, and then flows along the magnetic attraction mechanism. The iron powder in the lubricating oil is adsorbed on the magnetic attraction mechanism. The lubricating oil flows to the chamber wall of the primary filtering chamber and flows downward along the chamber wall of the primary filtering chamber.

[0016] 2) When the lubricating oil in the primary filtering chamber is stored to a certain height, it will enter the transition chamber. The liquid level of the lubricating oil in the transition chamber continues to rise, and when it rises to a corresponding position, it triggers the first induction assembly, and then triggers the oil pump assembly to work for a period of time to pump the lubricating oil from the transition chamber to the oil-water separation chamber.

[0017] 3) After the oil pump assembly stops working, the timer starts timing. The timing length is the time for oil-water static separation. After the time, the timer stops timing and resets, and at the same time, the drainage mechanism is triggered to open to drain away the water after oil-water static separation.

[0018] 4) The liquid level in the oil-water separation chamber drops, and when it drops to a corresponding position, the second induction assembly is triggered to close the drainage mechanism, and at the same time, the oil outlet mechanism is opened to discharge the lubricating oil after oil-water static separation into the oil collecting tank.

[0019] The machine hinge lubricating oil recovery device of the present application is provided with a filter box and an oil collecting tank, the filter box is provided with a primary filter cavity, a transition cavity and an oil-water separation cavity, the lubricating oil on the machine frame is recovered through the primary filter cavity, then the large solid impurities are removed through the primary filter, and then the iron powder dust and other small impurities are removed through the secondary filter, the filtered lubricating oil is pumped to the oil-water separation cavity through the transition cavity and the oil pump assembly, then the water is removed through the oil-water separation, and finally the lubricating oil is discharged into the oil collecting tank for recovery, so that the lubricating oil is recycled, and the waste of resources is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the machine hinge lubricating oil recovery device in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The present application will be further described below in combination with the drawings and embodiments.

[0022] Reference Figure 1 The machine hinge lubricating oil recovery device comprises a filter box 1 and an oil collecting tank 2, the filter box 1 is provided with a primary filter cavity 3, a transition cavity 4 and an oil-water separation cavity 5, the upper part of the primary filter cavity 3 is connected to the transition cavity 4, the transition cavity 4 and the oil-water separation cavity 5 are communicated through an oil pump assembly, the primary filter cavity 3 is provided with a filter mechanism and a magnetic attraction mechanism, the magnetic attraction mechanism is located below the filter mechanism, the transition cavity 4 is provided with a first sensing assembly, the oil-water separation cavity 5 is provided with a second sensing assembly and a timer 7, the timer 7 is arranged at the top of the oil-water separation cavity 5, the oil-water separation cavity 5 is connected to the oil collecting tank 2 through an oil outlet mechanism, the bottom of the oil-water separation cavity 5 is provided with a drainage mechanism, the oil pump assembly (oil pump 6) is respectively communicated with the first sensing assembly and the timer 7, the timer 7 is communicated with the drainage mechanism, and the second sensing assembly is respectively communicated with the oil outlet mechanism and the drainage mechanism.

[0023] The filter mechanism comprises an oil inlet 8 and a first filter screen 9, the magnetic attraction mechanism comprises a buffer plate 10 and a magnetic force frame 11, the oil inlet 8 is arranged at the top of the primary filter cavity 3, the first filter screen 9 is arranged on the oil inlet 8 and connected with the oil inlet 8, the buffer plate 10 is arranged below the first filter screen 9, and the buffer plate 10 is arranged obliquely, and a gap 29 is left between the bottom end of the buffer plate 10 and the cavity wall of the primary filter cavity 3, so that the lubricating oil can flow downward along the cavity wall of the primary filter cavity 3, and the magnetic force frame 11 is arranged on the buffer plate 10.

[0024] The bottom of the primary filtering cavity 3 is provided with an observation port 12 for observing the inside of the primary filtering cavity 3 and a slope plate 13 for carrying impurities. The working personnel can observe the filtering condition of the lubricating oil in the primary filtering cavity 3 through the observation port 12. The impurities in the lubricating oil will sink downwards (a characteristic of lubricating oil), so the impurities will sink to the slope plate 13 at the bottom of the primary filtering cavity 3 and be carried by the slope plate 13. The sinking of the impurities is equivalent to a filtering effect. The lubricating oil with less impurities in the upper part of the primary filtering cavity 3 flows into the transition cavity 4 through the second filtering screen 26.

[0025] The first sensing assembly includes a first float guide rod 14, a first float 15 and a first sensing switch 16. The first float guide rod 14 is installed at the bottom of the transition cavity 4. The first float 15 is movably arranged on the first float guide rod 14. The first sensing switch 16 is arranged above the first float 15 and at the top end of the first float guide rod 14. The first sensing switch 16 is communicatively connected to the oil pump assembly (the oil pump 6). The first float 15 acts on the first sensing switch 16 when it moves upwards to a corresponding position.

[0026] The second sensing assembly includes a second float guide rod 17, a second float 18 and a second sensing switch 19. The second float guide rod 17 is installed at the bottom of the oil-water separation cavity 5. The second float 18 is movably arranged on the second float guide rod 17. The second sensing switch 19 is arranged below the second float 18 and at the lower part of the second float guide rod 17. The second float 18 acts on the second sensing switch 19 when it moves downwards to a corresponding position. The density of the second float 18 is between that of water and lubricating oil.

[0027] The oil outlet mechanism includes an oil outlet pipe 20 and a first directional valve 21 arranged on the oil outlet pipe 20. The oil-water separation cavity 5 is connected to the oil collecting tank 2 through the oil outlet pipe 20. The height position of the oil outlet pipe 20 is higher than that of the second sensing switch 19, so that the water level is lower than the oil outlet pipe 20 when the second float 18 acts on the second sensing switch 19, preventing water from flowing into the oil collecting tank 2 when the oil outlet mechanism is opened. The second sensing switch 19 is communicatively connected to the first directional valve 21. The oil outlet pipe 20 is controlled by the first directional valve 21.

[0028] The drainage mechanism includes a drainage pipe 22 arranged at the bottom of the oil-water separation cavity 5 and a second directional valve 23 arranged on the drainage pipe 22. The second directional valve 23 is communicatively connected to the timer 7 and the second sensing switch 19, respectively. The drainage pipe 22 is controlled by the second directional valve 23.

[0029] The primary filtering cavity 3 and the transition cavity 4 are separated by a first partition plate 24. The transition cavity 4 and the oil-water separation cavity 5 are separated by a second partition plate 25. The first partition plate 24 is provided with a second filtering screen 26. The primary filtering cavity 3 and the transition cavity 4 are in communication with each other through the second filtering screen 26. The second filtering screen 26 can further filter the dust and other small impurities in the lubricating oil.

[0030] The oil pump assembly comprises the oil pump 6, an oil inlet pipe 27 and an oil outlet pipe 28. One end of the oil inlet pipe 27 is connected to the oil inlet of the oil pump 6, and the other end of the oil inlet pipe 27 extends into the lower part of the transition chamber 4 and is lower than the first inductive switch 16. One end of the oil outlet pipe 28 is connected to the oil outlet of the oil pump 6, and the other end of the oil outlet pipe 28 extends into the middle part of the oil-water separation chamber 5 and is higher than the second inductive switch 19.

[0031] Figure 1 In the figure, the dotted line inside the primary filtering chamber 3 represents the height of the lubricating oil containing impurities, the dotted line inside the transition chamber 4 represents the height of the lubricating oil containing water, the upper dotted line inside the oil-water separation chamber 5 represents the height of the lubricating oil, and the lower dotted line inside the oil-water separation chamber 5 represents the height of the water, i.e. the boundary between the oil and the water.

[0032] The recovery method of the machine hinge lubricating oil recovery device comprises the following steps:

[0033] 1) The contaminated lubricating oil is poured into the primary filtering chamber 3 through the oil inlet 8. After the large impurities are filtered out by the first filter screen 9, the lubricating oil falls onto the buffer plate 10 and then flows along the buffer plate 10. When the lubricating oil flows through the magnetic bracket 11, the iron powder in the lubricating oil is adsorbed on the magnetic bracket 11. Then the lubricating oil flows to the wall of the primary filtering chamber 3 (i.e. the gap 29) and flows downward along the wall of the primary filtering chamber 3.

[0034] 2) When the lubricating oil in the primary filtering chamber 3 is stored to a certain height, the lubricating oil enters the transition chamber 4 through the second filter screen 26. After that, the lubricating oil in the transition chamber 4 becomes more and more, so that the lubricating oil level in the transition chamber 4 continues to rise, and then the first float 15 continues to rise. When the first float 15 rises to the corresponding position, it is sensed by the first inductive switch 16, and then the oil pump 6 is triggered to work for a period of time to pump the lubricating oil from the transition chamber 4 to the oil-water separation chamber 5.

[0035] 3) When the oil pump 6 stops working, the timer 7 starts timing, and the timing length is the time for the oil and water to be separated statically. After the time, the timer 7 stops timing and resets, and at the same time, the second directional valve 23 is triggered to open to drain the water after the oil and water are separated statically.

[0036] 4) At this time, the liquid level in the oil-water separation chamber 5 drops, and the second float 18 starts to drop. When the second float 18 drops to the corresponding position, it is sensed by the second inductive switch 19, so that the second directional valve 23 is closed to stop draining water, and at the same time, the first directional valve 21 is opened to drain the lubricating oil after the oil and water are separated statically into the oil collecting tank 2, so as to realize the recovery of the lubricating oil.

[0037] The above are the preferred schemes of the present application, which show and describe the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A lubricating oil recovery device for machine hinges, characterized in that: The system includes a filter box (1) and an oil collection tank (2). The filter box (1) is provided with a primary filter chamber (3), a transition chamber (4) and an oil-water separation chamber (5). The upper part of the primary filter chamber (3) is connected to the transition chamber (4). The transition chamber (4) and the oil-water separation chamber (5) are connected through an oil pump assembly. The primary filter chamber (3) is provided with a filter mechanism and a magnetic attraction mechanism. The magnetic attraction mechanism is located below the filter mechanism. The transition chamber (4) is provided with a first sensing component. The oil-water separation chamber (5) is provided with a second sensing component and a timer (7). The oil-water separation chamber (5) is connected to the oil collection tank (2) through an oil outlet mechanism. The bottom of the oil-water separation chamber (5) is provided with a drainage mechanism. The oil pump assembly is connected to the first sensing component and the timer (7) respectively. The timer (7) is connected to the drainage mechanism. The second sensing component is connected to the oil outlet mechanism and the drainage mechanism respectively. The filtration mechanism includes an oil inlet (8) and a first filter screen (9), and the magnetic attraction mechanism includes a buffer plate (10) and a magnetic frame (11). The oil inlet (8) is located at the top of the primary filtration chamber (3), the first filter screen (9) is located on the oil inlet (8) and connected to the oil inlet (8), the buffer plate (10) is located below the first filter screen (9), and the buffer plate (10) is inclined and a gap (29) is left between its bottom end and the cavity wall of the primary filtration chamber (3). The magnetic frame (11) is located on the buffer plate (10). The primary filtration chamber (3) and the transition chamber (4) are separated by a first partition (24), and the transition chamber (4) and the oil-water separation chamber (5) are separated by a second partition (25). A second filter screen (26) is provided on the first partition (24), and the primary filtration chamber (3) and the transition chamber (4) are interconnected through the second filter screen (26).

2. The machine hinge lubricating oil recovery device according to claim 1, characterized in that: The bottom of the primary filter chamber (3) is provided with an observation port (12) for observing the inside of the primary filter chamber (3) and a slope plate (13) for carrying impurities.

3. The lubricating oil recovery device for machine hinges according to claim 1, characterized in that: The first sensing component includes a first float guide rod (14), a first float (15), and a first sensing switch (16). The first float guide rod (14) is installed at the bottom of the transition cavity (4). The first float (15) is movably mounted on the first float guide rod (14). The first sensing switch (16) is located above the first float (15). The first sensing switch (16) is connected to the oil pump assembly. When the first float (15) moves upward to the corresponding position, it acts on the first sensing switch (16).

4. The lubricating oil recovery device for machine hinges according to claim 1, characterized in that: The second sensing component includes a second float guide rod (17), a second float (18), and a second sensing switch (19). The second float guide rod (17) is installed at the bottom of the oil-water separation chamber (5). The second float (18) is movably mounted on the second float guide rod (17). The second sensing switch (19) is located below the second float (18). When the second float (18) moves downward to the corresponding position, it acts on the second sensing switch (19).

5. The lubricating oil recovery device for machine hinges according to claim 4, characterized in that: The oil outlet mechanism includes an oil outlet pipe (20) and a first directional valve (21) installed on the oil outlet pipe (20). The oil-water separation chamber (5) is connected to the oil collection tank (2) through the oil outlet pipe (20). The height of the oil outlet pipe (20) is higher than the height of the second inductive switch (19). The second inductive switch (19) is connected to the first directional valve (21).

6. The lubricating oil recovery device for machine hinges according to claim 5, characterized in that: The drainage mechanism includes a drain pipe (22) located at the bottom of the oil-water separation chamber (5) and a second directional valve (23) located on the drain pipe (22). The second directional valve (23) is connected to the timer (7) and the second inductive switch (19) respectively.

7. The lubricating oil recovery device for machine hinges according to claim 1, characterized in that: The oil pump assembly includes an oil pump (6), an oil inlet pipe (27), and an oil outlet pipe (28). One end of the oil inlet pipe (27) is connected to the oil pump (6), and the other end extends into the lower part of the transition chamber (4). One end of the oil outlet pipe (28) is connected to the oil pump (6), and the other end extends into the middle part of the oil-water separation chamber (5).

8. The recovery method of the lubricating oil recovery device for machine hinges as described in any one of claims 1-7, characterized in that: Includes the following steps: 1) Pour the contaminated lubricating oil into the primary filter chamber (3). After the filter mechanism removes large impurities, the oil falls onto the magnetic suction mechanism and then flows along the magnetic suction mechanism. The iron powder in the lubricating oil is adsorbed onto the magnetic suction mechanism. The lubricating oil flows to the cavity wall of the primary filter chamber (3) and flows downward along the cavity wall of the primary filter chamber (3). 2) When the lubricating oil in the primary filter chamber (3) reaches a certain height, it will enter the transition chamber (4). The lubricating oil level in the transition chamber (4) continues to rise, and when it rises to the corresponding position, it triggers the first sensing component, which in turn triggers the oil pump component to work for a period of time, drawing the lubricating oil from the transition chamber (4) to the oil-water separation chamber (5). 3) When the oil pump assembly stops working, the timer (7) starts timing. The timing length is the time for the oil and water to separate. When the time is up, the timer (7) stops timing and resets. At the same time, the drainage mechanism is triggered to open so as to drain the water after the oil and water have separated. 4) When the liquid level in the oil-water separation chamber (5) drops and reaches the corresponding position, the second sensing component is triggered to close the drainage mechanism and open the oil outlet mechanism to discharge the lubricating oil after static separation into the oil collection tank (2).

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