Machine hinge lubricating oil recovery device and recovery method thereof

Abstract

The machine hinge lubricating oil recovery device comprises a filter tank and an oil collection tank, a primary filter cavity, a transition cavity and an oil-water separation cavity are formed in the filter tank, the upper portion of the primary filter cavity communicates with the transition cavity, and the transition cavity communicates with the oil-water separation cavity through an oil pump assembly; a filtering mechanism and a magnetic attraction mechanism are arranged on the primary filtering cavity, the magnetic attraction mechanism is located below the filtering mechanism, 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, and a drainage mechanism is arranged at the bottom of the oil-water separation cavity. The oil pump assembly is in communication connection with the first sensing assembly and the timer, the timer is in communication connection with the drainage mechanism, 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 invention relates to the technical field of injection molding machines, and in particular to a machine hinge lubricating oil recovery device and a recovery method thereof. Background Art

[0002] The hinge of the injection molding machine needs lubricating oil for movement. Since there is a gap between the steel sleeve of the hinge and the pin shaft, part of the lubricating oil flows out of the hinge through the gap and falls onto the frame, where it is contaminated by water, dust, iron filings and other impurities on the frame and cannot be directly recycled, resulting in waste.

[0003] Therefore, further improvements are necessary. Summary of the invention

[0004] The purpose of the present invention is to provide a machine hinge lubricating oil recovery device and a recovery method thereof which have a simple structure, good filtering effect, can recycle the lubricating oil, and are 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, the filter box is provided with a primary filter chamber, a transition chamber and an oil-water separation chamber, 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 communicatively connected to the first sensing assembly and the timer respectively, the timer is communicatively connected to the drainage mechanism, and the second sensing assembly is communicatively connected to the oil outlet mechanism and the drainage mechanism respectively.

[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 on 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 chamber and a slope plate for carrying impurities are arranged at the bottom of the primary filter chamber.

[0008] The first sensing component 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 movably arranged on the first float guide rod. The first sensing switch is arranged above the first float. The first sensing switch is communicatively connected to the oil pump component. When the first float moves upward to a corresponding position, it acts on the first sensing switch.

[0009] The second sensing component 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 movably arranged on the second float guide rod. The second sensing switch is arranged below the second float. When the second float moves downward to a 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 position of the oil outlet pipe is higher than the height position 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, and the second directional valve is respectively connected to the timer and the second induction switch for communication.

[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 arranged on the first partition, and the primary filter chamber and the transition chamber are interconnected through the second filter screen.

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

[0014] A recovery method of a lubricating oil recovery device for a hinge designed for this purpose is characterized by comprising the following steps: 1) Pour the contaminated lubricating oil into the primary filter chamber. After the large impurities are filtered out by the filter mechanism, 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 on the magnetic suction mechanism. The lubricating oil flows to the wall of the primary filter chamber and flows downward along the wall of the primary filter chamber. 2) When the lubricating oil in the primary filter chamber is stored to a certain height, it will enter the transition chamber. The lubricating oil level in the transition chamber will continue to rise, and when it rises to the corresponding position, it will trigger the first sensing component, and then trigger the oil pump component to work for a period of time, pumping the lubricating oil from the transition chamber to the oil-water separation chamber; 3) When the oil pump assembly stops working, the timer starts timing, and the timing length is the static separation time of oil and water. When the time is up, the timer stops timing and resets, and at the same time triggers the drainage mechanism to open to drain the water after the static separation of oil and water; 4) The liquid level in the oil-water separation chamber drops, and when it drops to the corresponding position, the second sensing component is triggered to close the drainage mechanism, and at the same time the oil outlet mechanism is opened to discharge the lubricating oil after static separation of oil and water into the oil collecting tank.

[0015] The lubricating oil recovery device for 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 performed to remove large solid impurities, and then the secondary filtration is performed to remove tiny impurities such as iron powder and dust. The filtered lubricating oil is pumped to the oil-water separation chamber through the transition chamber and the oil pump assembly, and then the oil and water are allowed to stand for stratification to remove moisture, and 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

[0016] Figure 1 The figure is a schematic diagram of the overall structure of a hinge lubricating oil recovery device in one embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] See also Figure 1 The lubricating oil recovery device of this machine hinge comprises 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 arranged 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 arranged on the primary filter chamber 3. The magnetic attraction mechanism is located below the filter mechanism. A first sensing assembly is arranged in the transition chamber 4. A second sensing assembly and a timer 7 are arranged in the oil-water separation chamber 5. The timer 7 is arranged on the top of 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 arranged 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.

[0019] 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, 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 inclined, leaving 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.

[0020] 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 filtering. The lubricating oil with less impurities in the upper part of the primary filter chamber 3 flows into the transition chamber 4 through the second filter screen 26.

[0021] 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 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 the first sensing switch 16 is arranged at the top of the first float guide rod 14. The first sensing switch 16 is communicatively connected to the oil pump component (oil pump 6). When the first float 15 moves upward to the corresponding position, it acts on the first sensing switch 16.

[0022] 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 arranged on the second float guide rod 17 up and down. The second sensing switch 19 is arranged below the second float 18, and the second sensing switch 19 is arranged at the lower part of the second float guide rod 17. When the second float 18 moves downward to a corresponding position, it acts on the second sensing switch 19; the density of the second float 18 is between water and lubricating oil.

[0023] 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 position of the oil outlet pipe 20 is higher than the height position 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 on and off by the first directional valve 21.

[0024] 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 for communication. The drainage pipe 22 is controlled by the second directional valve 23.

[0025] 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 arranged on the first partition plate 24, and 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 tiny impurities such as dust in the lubricating oil.

[0026] 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.

[0027] Figure 1 In the figure, the dotted line inside the primary filter chamber 3 represents the liquid level of the lubricating oil containing impurities, the dotted line inside the transition chamber 4 represents the liquid level of the lubricating oil containing water, 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 boundary.

[0028] The recovery method of the lubricating oil recovery device of this machine cutter comprises the following steps: 1) Pour the contaminated lubricating oil into the primary filter chamber 3 through the oil inlet 8, filter out large impurities through the first filter screen 9, fall onto the buffer plate 10, and then flow along the buffer plate 10. When flowing through the magnetic frame 11, the iron powder in the lubricating oil is adsorbed on the magnetic frame 11, and then the lubricating oil flows to the cavity wall of the primary filter chamber 3 (i.e., the gap 29), and flows downward along the cavity wall of the primary filter chamber 3; 2) When the lubricating oil in the primary filter chamber 3 is stored to a certain height, it will enter the transition chamber 4 through the second filter screen 26. Then, the lubricating oil in the transition chamber 4 increases, 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 induction switch 16, thereby triggering 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; 3) When the oil pump 6 stops working, the timer 7 starts timing, and the timing length is the static separation time of the 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 the static separation of the oil and water; 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 to close the second directional valve 23 and stop draining. 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 to realize the recovery of the lubricating oil.

[0029] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lubricating oil recovery device for a machine hinge, characterized in that: The invention comprises a filter box (1) and an oil collecting box (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 via 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) via 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 connected to the drainage mechanism via a communication connection. The second sensing assembly is respectively connected to the oil outlet mechanism and the drainage mechanism via a communication connection.

2. The hinge lubricating oil recovery device according to claim 1 is characterized in that: The filtering mechanism comprises an oil inlet (8) and a first filter screen (9), and the magnetic attraction mechanism comprises a buffer plate (10) and a magnetic frame (11); the oil inlet (8) is arranged at the top of the primary filter chamber (3); 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); the buffer plate (10) is arranged obliquely, and a gap (29) is left between the bottom end of the buffer plate and the 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 is characterized in that: An observation port (12) for observing the interior of the primary filter chamber (3) and a slope plate (13) for carrying impurities are provided at the bottom of the primary filter chamber (3).

4. The hinge lubricating oil recovery device according to claim 1 is characterized in that: The first sensing assembly comprises a first float guide rod (14), a first float (15) and a first sensing switch (16); the first float guide rod (14) is mounted 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); the first sensing switch (16) is communicatively connected to the oil pump assembly; and the first float (15) acts on the first sensing switch (16) when it moves upward to a corresponding position.

5. The hinge lubricating oil recovery device according to claim 1 is characterized in that: The second sensing assembly comprises a second float guide rod (17), a second float (18) and a second sensing switch (19). The second float guide rod (17) is mounted 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). 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 is 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 is 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); 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 is characterized in that: The primary filter chamber (3) and the transition chamber (4) are separated by a first partition plate (24), 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), and the primary filter chamber (3) and the transition chamber (4) are interconnected 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 pipeline (27) and an oil outlet pipeline (28); one end of the oil inlet pipeline (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 pipeline (28) is connected to the oil pump (6) and the other end extends into the middle part of the oil-water separation chamber (5).

10. The recovery method of the hinge lubricating oil recovery device according to any one of claims 1 to 9, characterized in that: The following steps are involved: 1) Pour the contaminated lubricating oil into the primary filter chamber (3), and after the large impurities are filtered out by the filter 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, and 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) is stored to a certain height, it will enter the transition chamber (4), and the lubricating oil level in the transition chamber (4) will continue to rise. When it rises to a corresponding position, it will trigger the first sensing component, which will then trigger the oil pump component to work for a period of time, pumping 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, 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 drainage mechanism to open, so as to drain the water after static separation of oil and water; 4) The liquid level in the oil-water separation chamber (5) drops, and when it drops to a corresponding position, the second sensing component is triggered to close the drainage mechanism, and at the same time, the oil outlet mechanism is opened to discharge the lubricating oil after static separation of the oil and water into the oil collecting tank (2).

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