Recovery device for lubricating oil of machine hinge

Abstract

A machine hinge lubricating oil recovery device comprises a filtering box and an oil collecting box, a primary filtering cavity, a transition cavity and an oil-water separation cavity are formed in the filtering box, the upper portion of the primary filtering cavity is communicated with the transition cavity, the transition cavity is communicated with the oil-water separation cavity through an oil pump assembly, and a filtering mechanism and a magnetic attraction mechanism are arranged on the primary filtering cavity. A first induction assembly is arranged in the transition cavity, a second induction assembly and a timer are arranged in the oil-water separation cavity, the oil-water separation cavity is connected with an oil collecting tank through an oil outlet mechanism, a drainage mechanism is arranged at the bottom of the oil-water separation cavity, and the oil pump assembly is in communication connection with the first induction assembly and the timer. And the second sensing assembly is in communication connection with the oil outlet mechanism and the drainage mechanism. According to the machine hinge lubricating oil recovery device, the lubricating oil can be recovered, so that the lubricating oil can be recycled, and the waste of resources is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a machine hinge lubricating oil recovery device. Background Art

[0002] The hinge of the injection molding machine requires lubricating oil for movement. Due to the gap between the steel sleeve and the pin shaft of the hinge, some of the lubricating oil flows out of the hinge through the gap and falls onto the frame. It is contaminated by water, dust, iron filings and other impurities on the frame and cannot be directly recycled and reused, resulting in waste.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of the utility model is to provide a machine hinge lubricating oil recovery device which has a simple structure, good filtering effect, can recycle lubricating oil and is highly practical, so as to overcome the shortcomings of the prior art.

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

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

[0007] An observation port for observing the interior of the primary filter cavity and a slope plate for carrying impurities are provided at the bottom of the primary filter cavity.

[0008] The first sensing assembly includes 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 chamber. The first float is arranged on the first float guide rod for moving up and down. The first sensing switch is arranged above the first float. The first sensing switch is communicatively connected to the oil pump assembly. When the first float moves upward to the corresponding position, it acts on the first sensing switch.

[0009] The second sensing assembly includes a second float guide rod, a second float and a second sensing switch. The second float guide rod is installed at the bottom of the oil-water separation chamber. The second float is arranged on the second float guide rod for moving up and down. The second sensing switch is arranged below the second float. When the second float moves downward to the corresponding position, it acts on the second sensing switch.

[0010] The oil outlet mechanism includes 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 the height of the second induction switch. The second induction switch is communicatively connected to the first directional valve.

[0011] The drainage mechanism includes 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 respectively communicatively connected to the timer and the second induction switch.

[0012] The primary filter chamber and the transition chamber are separated by a first partition, the transition chamber and the oil-water separation chamber are separated by a second partition, a second filter screen is provided on the first partition, and the primary filter chamber and the transition chamber are connected to each other through the second filter screen.

[0013] The oil pump assembly includes 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 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 extends into the middle of the oil-water separation chamber.

[0014] The lubricating oil recovery device of the machine hinge of the present invention is provided with a filter box and an oil collecting box. A primary filter chamber, a transition chamber and an oil-water separation chamber are provided in the filter box. The lubricating oil on the machine frame is recovered through the primary filter chamber, and then the primary filtration is used to remove large solid impurities. The secondary filtration is then used to remove tiny impurities such as iron powder and dust. The filtered lubricating oil is pumped into the oil-water separation chamber through the oil pump assembly through the transition chamber, and then the oil and water are allowed to stand for stratification to remove moisture. Finally, the lubricating oil is discharged into the oil collecting box for recovery, thereby realizing the recycling and reuse of the lubricating oil, thereby greatly reducing the waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a hinge lubricating oil recovery device in one embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] See also Figure 1The lubricating oil recovery device of this machine hinge includes a filter box 1 and an oil collecting box 2. A primary filter chamber 3, a transition chamber 4 and an oil-water separation chamber 5 are provided in the filter box 1. 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. A filtering mechanism and a magnetic attraction mechanism are provided on the primary filter chamber 3. The magnetic attraction mechanism is located below the filtering mechanism. A first sensing assembly is provided in the transition chamber 4. A second sensing assembly and a timer 7 are provided in the oil-water separation chamber 5. The timer 7 is provided at the top of the oil-water separation chamber 5. The oil-water separation chamber 5 is connected to the oil collecting box 2 through the oil outlet mechanism. A drainage mechanism is provided at the bottom of the oil-water separation chamber 5. The oil pump assembly (oil pump 6) is respectively communicated with the first sensing assembly and the timer 7. The timer 7 is respectively communicated with the drainage mechanism. The second sensing assembly is respectively communicated with the oil outlet mechanism and the drainage mechanism.

[0018] The filtering 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 arranged at the top of the primary filter chamber 3, and the first filter screen 9 is arranged on the oil inlet 8 and connected to the oil inlet 8. The buffer plate 10 is arranged below the first filter screen 9, and the buffer plate 10 is arranged at an angle, with a gap 29 between its bottom end and the cavity wall of the primary filter chamber 3. The gap 29 allows the lubricating oil to flow downward along the cavity wall of the primary filter chamber 3, and the magnetic frame 11 is arranged on the buffer plate 10.

[0019] An observation port 12 for observing the interior of the primary filter chamber 3 and a ramp plate 13 for carrying impurities are provided at the bottom of the primary filter chamber 3. The staff can observe the filtering condition of the lubricating oil inside the primary filter chamber 3 through the observation port 12. The impurities in the lubricating oil will sink downward (lubricating oil characteristics), so the impurities will sink to the ramp plate 13 at the bottom of the primary filter chamber 3 and be carried by the ramp plate 13. The sinking of the impurities is equivalent to a filtering effect. The lubricating oil with fewer impurities in the upper part of the primary filter chamber 3 flows into the transition chamber 4 through the second filter screen 26.

[0020] 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 chamber 4. The first float 15 is movably arranged on the first float guide rod 14 up and down. The first sensing switch 16 is arranged above the first float 15 and at the top of the first float guide rod 14. The first sensing switch 16 is communicatively connected to the oil pump assembly (oil pump 6). When the first float 15 moves upward to the corresponding position, it acts on the first sensing switch 16.

[0021] 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 chamber 5. The second float 18 is movably arranged on the second float guide rod 17 up and down. The second sensing switch 19 is arranged below the second float 18 and at the lower part of the second float guide rod 17. When the second float 18 moves downward to the corresponding position, it acts on the second sensing switch 19. The density of the second float 18 is between water and lubricating oil.

[0022] 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 chamber 5 is connected to the oil collecting tank 2 through the oil outlet pipe 20. The height of the oil outlet pipe 20 is higher than the height of the second sensor switch 19, ensuring that the water level is lower than the oil outlet pipe 20 when the second float 18 acts on the second sensor switch 19, preventing water from flowing into the oil collecting tank 2 when the oil outlet mechanism is opened. The second sensor switch 19 is communicatively connected to the first directional valve 21; the oil outlet pipe 20 is controlled to be on and off by the first directional valve 21.

[0023] The drainage mechanism includes a drainage pipe 22 arranged at the bottom of the oil-water separation chamber 5 and a second directional valve 23 arranged on the drainage pipe 22. The second directional valve 23 is respectively connected to the timer 7 and the second induction switch 19, and the drainage pipe 22 is controlled by the second directional valve 23.

[0024] The primary filter chamber 3 and the transition chamber 4 are separated by a first partition plate 24, and the transition chamber 4 and the oil-water separation chamber 5 are separated by a second partition plate 25. A second filter screen 26 is provided on the first partition plate 24. The primary filter chamber 3 and the transition chamber 4 are interconnected through the second filter screen 26. The second filter screen 26 can further filter out tiny impurities such as dust in the lubricating oil.

[0025] 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 inlet of the oil pump 6, and the other end extends into the lower part of the transition chamber 4, and the other end of the oil inlet pipe 27 is lower than the first induction 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 extends into the middle of the oil-water separation chamber 5, and the other end of the oil outlet pipe 28 is higher than the second induction switch 19.

[0026] Figure 1 In the figure, the dotted line inside the primary filter chamber 3 represents the liquid level of the impurity-containing lubricating oil, the dotted line inside the transition chamber 4 represents the liquid level of the water-containing lubricating oil, the upper dotted line inside the oil-water separation chamber 5 represents the liquid level of the lubricating oil, and the lower dotted line inside the oil-water separation chamber 5 represents the water level, that is, the oil-water dividing line.

[0027] The recovery method of the lubricating oil recovery device of this machine hinge comprises the following steps:

[0028] 1) Contaminated lubricating oil is poured into the primary filter chamber 3 through the oil inlet 8. After passing through the first filter 9 to filter out large impurities, the oil falls onto the buffer plate 10 and flows along the buffer plate 10. When the oil flows through the magnetic frame 11, the iron powder in the oil is adsorbed on the magnetic frame 11. The oil then flows to the wall of the primary filter chamber 3 (i.e., the gap 29) and flows downward along the wall of the primary filter chamber 3.

[0029] 2) When the lubricating oil in the primary filter chamber 3 reaches a certain level, it will pass through the second filter screen 26 and enter the transition chamber 4. Then, the lubricating oil in the transition chamber 4 will increase, causing the lubricating oil level in the transition chamber 4 to continue to rise, thereby causing the first float 15 to continue to rise. When the first float 15 rises to the corresponding position, it is sensed by the first sensor switch 16, which triggers the oil pump 6 to work for a period of time, pumping the lubricating oil from the transition chamber 4 to the oil-water separation chamber 5;

[0030] 3) When the oil pump 6 stops working, the timer 7 starts timing, and the timing length is the time of static separation of oil and water. When the time is up, the timer 7 stops timing and resets, and at the same time triggers the second directional valve 23 to open to drain the water after static separation of oil and water;

[0031] 4) At this time, the liquid level in the oil-water separation chamber 5 drops, and the second float 18 begins to drop. When it drops to the corresponding position, it is sensed by the second induction switch 19, so that the second directional valve 23 is closed to stop drainage. At the same time, the first directional valve 21 is opened to discharge the lubricating oil after static separation of oil and water into the oil collecting tank 2, thereby realizing lubricating oil recovery.

[0032] The above is a preferred embodiment of the present invention, which illustrates 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 the present invention is defined by the appended claims and their equivalents.

Claims

1. A hinge lubricating oil recovery device, characterized by: The invention comprises a filter box (1) and an oil collecting box (2), wherein a primary filter chamber (3), a transition chamber (4) and an oil-water separation chamber (5) are provided in the filter box (1), 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, a filter mechanism and a magnetic attraction mechanism are provided on the primary filter chamber (3), the magnetic attraction mechanism is located below the filter mechanism, a first sensing assembly is provided in the transition chamber (4), a second sensing assembly and a timer (7) are provided in the oil-water separation chamber (5), the oil-water separation chamber (5) is connected to the oil collecting box (2) through an oil outlet mechanism, a drainage mechanism is provided at the bottom of the oil-water separation chamber (5), the oil pump assembly is respectively connected to the first sensing assembly and the timer (7), the timer (7) is respectively connected to the drainage mechanism, and the second sensing assembly is respectively connected to the oil outlet mechanism and the drainage mechanism.

2. The hinge lubricating oil recovery device according to claim 1, characterized in that: The filtering 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 arranged on the top of the primary filter chamber (3), the first filter screen (9) is arranged on the oil inlet (8) and is connected to the oil inlet (8), the buffer plate (10) is arranged below the first filter screen (9), and the buffer plate (10) is arranged obliquely, with a gap (29) between its bottom end and the cavity wall of the primary filter chamber (3), and the magnetic frame (11) is arranged on the buffer plate (10).

3. The hinge lubricating oil recovery device according to claim 2, characterized in that: An observation port (12) for observing the interior of the primary filter cavity (3) and a slope plate (13) for carrying impurities are provided at the bottom of the primary filter cavity (3).

4. The hinge lubricating oil recovery device according to claim 1, characterized in that: The first induction assembly includes a first float guide rod (14), a first float (15) and a first induction switch (16). The first float guide rod (14) is installed at the bottom of the transition chamber (4). The first float (15) is arranged on the first float guide rod (14) to move up and down. The first induction switch (16) is arranged above the first float (15). The first induction switch (16) is communicatively connected to the oil pump assembly. When the first float (15) moves upward to a corresponding position, it acts on the first induction switch (16).

5. The hinge lubricating oil recovery device according to claim 1, characterized in that: 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 chamber (5). The second float (18) is arranged on the second float guide rod (17) to move up and down. The second sensing switch (19) is arranged below the second float (18). When the second float (18) moves downward to a corresponding position, it acts on the second sensing switch (19).

6. The hinge lubricating oil recovery device according to claim 5, characterized in that: The oil outlet mechanism comprises an oil outlet pipe (20) and a first directional valve (21) arranged on the oil outlet pipe (20); the oil-water separation chamber (5) is connected to the oil collecting tank (2) via the oil outlet pipe (20); the height of the oil outlet pipe (20) is higher than the height of the second inductive switch (19); and the second inductive switch (19) is communicatively connected to the first directional valve (21).

7. The hinge lubricating oil recovery device according to claim 6, characterized in that: The drainage mechanism comprises a drainage pipe (22) arranged at the bottom of the oil-water separation chamber (5) and a second directional valve (23) arranged on the drainage pipe (22), and the second directional valve (23) is respectively communicatively connected to the timer (7) and the second induction switch (19).

8. The hinge lubricating oil recovery device according to claim 1, characterized in that: The primary filter chamber (3) and the transition chamber (4) are separated by a first partition (24), 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 filter chamber (3) and the transition chamber (4) are communicated with each other via the second filter screen (26).

9. The hinge lubricating oil recovery device according to claim 1, characterized in that: The oil pump assembly comprises an oil pump (6), an oil inlet pipe (27) and an oil outlet pipe (28), wherein 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), and 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).

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