Waste mineral oil recovery oil-water separation device

Abstract

The utility model relates to the technical field of oil-water separation, in particular to a waste mineral oil recovery oil-water separation device which comprises a separation mechanism, a scraping and sweeping mechanism is arranged in the separation mechanism, and a delivery valve used for separating oil and water after precipitation is arranged on the lower side of the separation mechanism. When the scraping and sweeping shaft rotates, the scraping and sweeping plate is driven to rotate and scrape on the residue filtering cover, so that filtered oil sludge or impurities are pushed to the edge position of the residue filtering cover and are discharged from the residue discharging opening of the separating cylinder when the scraping and sweeping plate rotates along with accumulation of the oil sludge or the impurities, and therefore the residue filtering cover is cleaned and prevented from being blocked; the pushing frame is driven to rotate from the pushing seat of the piston plate through the rotation of the scraping shaft, so that the piston plate reciprocates up and down in the guide cylinder, and waste oil is sucked at the bottom of the residue filtering cover to accelerate the filtration of the whole waste oil.

Description

Technical Field

[0001] This utility model relates to the field of oil-water separation technology, and in particular to an oil-water separation device for waste mineral oil recovery. Background Technology

[0002] Waste mineral oil is oil that has been replaced due to changes in its original physical and chemical properties caused by contamination from impurities, oxidation, and heat, making it unusable. It mainly comes from sludge and oil residue generated during oil extraction and refining; sediment generated during mineral oil storage; oil residue and filter media generated during the replacement and regeneration processes of machinery, power, and transportation equipment.

[0003] According to the patent document with publication number CN222024147U, the filter screen can filter the residue in the oil and water. The flow of oil and water can drive the turbine to rotate, which in turn drives the rotating scraper to scrape off the residue above the filter screen. The residue falls into the annular baffle. The pulling column causes the sliding block to slide inside the sliding groove, allowing the annular baffle to slide downward. Pulling the pulling column again causes the sliding plate to squeeze the reset spring, which allows the annular baffle to slide into the groove and push the residue into the slag trough, so that the residue can fall into the collection box.

[0004] The patent document describes a method for filtering waste oil during transportation. While the filter screen can be cleaned by scraping with a rotating scraper, the waste oil may contain highly adhesive sludge. This sludge can adhere to the inner wall of the inlet pipe, affecting the flow of the waste oil. Furthermore, the sludge scraped off during oil intake will continue to rotate with the scraper and can only be cleaned when the oil and water supply stops. If there are many impurities or sludge in the waste oil, the sludge accumulated at the filter screen will increase, reducing the overall flow rate of the waste oil, affecting the rotation of the scraper, and causing blockages. Utility Model Content

[0005] The purpose of this invention is to provide a waste mineral oil recovery and oil-water separation device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A waste mineral oil recovery oil-water separation device includes a separation mechanism, a scraping mechanism inside the separation mechanism, and an outlet valve on the lower side of the separation mechanism for separating the settled oil and water.

[0008] The separation mechanism includes a separation cylinder, a sealing plate fixed at the upper end of the separation cylinder, an annularly distributed slag discharge port in the middle of the separation cylinder, and a slag guide trough fixed at the slag discharge port of the separation cylinder.

[0009] The scraping mechanism includes a suction hood, a filter cake cover fixed on the upper side of the suction hood, a scraping shaft rotatably connected to the center of the filter cake cover, two scraping plates with a spiral structure fixed on the outer side of the scraping shaft, a guide cylinder fixed at the bottom of the suction hood, a piston plate slidably connected inside the guide cylinder, six push seats arranged in a ring fixed on the top of the piston plate, two push brackets fixed at the lower end of the scraping shaft, and a one-way guide assembly provided at the center of the piston plate.

[0010] Preferably, both scraper plates are attached to the top of the filter cake cover. Each scraper plate consists of three parts: an arc-shaped part, an arched part, and an oil-pushing part. The arc-shaped part and the oil-pushing part are connected through the arched part. The lower ends of the two pusher frames are rotatably connected to the rollers.

[0011] Preferably, an oil inlet pipe is passed through the conical surface on the upper side of the separator cylinder, one end of the oil inlet pipe extending into the separator cylinder is sleeved on the outside of the scraping shaft, a discharge pipe is fixed at the lower end of the separator cylinder, and an observation window is fixed on the conical surface on the lower side of the separator cylinder.

[0012] Preferably, a drive motor is fixedly installed on the top of the sealing plate, and the output end of the drive motor is fixedly connected to the upper end of the scraping shaft.

[0013] Preferably, the unidirectional conduction assembly includes a unidirectional frame, a vertical rod is provided in the middle of the unidirectional frame, and a partition is provided at the upper end of the vertical rod. A return spring is provided between the partition and the piston plate, and a rubber sealing gasket is provided at the lower end of the vertical rod.

[0014] Preferably, the piston plate has a sealing ring on its outer edge for sealing with the inner wall of the guide cylinder, a sliding hole for the vertical rod to slide in the center of the piston plate, and multiple annular guide ports around the sliding hole of the piston plate.

[0015] Preferably, a push spring is fixed inside the guide cylinder, and the upper end of the push spring is fixed to the bottom of the piston plate. Multiple overflow ports are opened on the outside of the guide cylinder to allow the oil-water mixture to flow out.

[0016] The advantages compared to existing technologies are as follows:

[0017] 1. When the scraper shaft rotates, it drives the scraper plate to rotate and scrape on the filter cake cover, thereby pushing the filtered oil sludge or impurities to the edge of the filter cake cover. As the oil sludge or impurities accumulate, they are sent out from the discharge port of the separator as the scraper plate rotates, thereby cleaning the filter cake cover and preventing it from becoming blocked.

[0018] 2. The rotation of the scraping shaft drives the pusher to rotate over the piston plate's pusher seat, allowing the piston plate to move up and down reciprocally within the guide cylinder. Subsequently, the waste oil is sucked up from the bottom of the filter sludge cover, accelerating the filtration of the entire waste oil. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the waste mineral oil recovery oil-water separation device described in this utility model;

[0021] Figure 2 This is a first cross-sectional view of the waste mineral oil recovery oil-water separation device of this utility model;

[0022] Figure 3 This is a second sectional view of the waste mineral oil recovery oil-water separation device of this utility model;

[0023] Figure 4 This is a schematic diagram of the suction hood structure of the waste mineral oil recovery oil-water separation device described in this utility model;

[0024] Figure 5 This is a schematic diagram of the scraper plate and filter cover structure of the waste mineral oil recovery oil-water separation device described in this utility model;

[0025] Figure 6 This is a schematic diagram of the filter sludge cover structure of the waste mineral oil recovery oil-water separation device of this utility model;

[0026] Figure 7 This is a schematic diagram of the guide cylinder structure of the waste mineral oil recovery oil-water separation device of this utility model;

[0027] Figure 8 This is a schematic diagram of the scraper plate structure of the waste mineral oil recovery oil-water separation device described in this utility model;

[0028] Figure 9 This is a schematic diagram of the piston plate structure of the waste mineral oil recovery oil-water separation device described in this utility model;

[0029] Figure 10 This is a partial cross-sectional view of the separation cylinder of the waste mineral oil recovery oil-water separation device described in this utility model.

[0030] The annotations in the attached figures are explained as follows:

[0031] 1. Separation mechanism; 2. Scraping mechanism; 3. Outlet valve; 4. Observation window; 5. Drive motor; 11. Separation cylinder; 12. Slag guide trough; 13. Oil inlet pipe; 14. Sealing plate; 21. Scraping shaft; 22. Scraping plate; 221. Arc-shaped part; 222. Arched part; 223. Oil pushing part; 23. Filter hood; 24. Suction hood; 25. Piston plate; 26. Pushing frame; 27. Pushing seat; 28. Guide cylinder; 29. ​​One-way frame. Detailed Implementation

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] like Figures 1-10 As shown, a waste mineral oil recovery oil-water separation device includes a separation mechanism 1, a scraping mechanism 2 inside the separation mechanism 1, and an outlet valve 3 on the lower side of the separation mechanism 1 for separating the settled oil and water.

[0035] In this embodiment: the separation mechanism 1 includes a separation cylinder 11, a sealing plate 14 is fixed at the upper end of the separation cylinder 11, a ring-shaped slag discharge port is opened in the middle of the separation cylinder 11, a slag guide groove 12 is fixed at the slag discharge port of the separation cylinder 11, an oil inlet pipe 13 passes through the conical surface on the upper side of the separation cylinder 11, one end of the oil inlet pipe 13 extends into the separation cylinder 11 and is sleeved on the outside of the scraper shaft 21, a discharge pipe is fixed at the lower end of the separation cylinder 11, an observation window 4 is fixed on the conical surface on the lower side of the separation cylinder 11, a drive motor 5 is fixedly installed at the top of the sealing plate 14, the observation window 4 at the bottom of the separation cylinder 11 is used to facilitate the observation of the oil-water sedimentation and stratification, and the water in the lower layer is discharged by opening the outlet valve 3. In addition, the slag discharge port is used to facilitate the sending of waste oil impurities from waste filtration into the slag guide groove 12.

[0036] In this embodiment: the scraping mechanism 2 includes a suction hood 24, a filter cake hood 23 is fixed on the upper side of the suction hood 24, a scraping shaft 21 is rotatably connected to the center of the filter cake hood 23, two spiral scraping plates 22 are fixed on the outer side of the scraping shaft 21, a guide cylinder 28 is fixed at the bottom of the suction hood 24, a piston plate 25 is slidably connected inside the guide cylinder 28, six ring-shaped push seats 27 are fixed on the top of the piston plate 25, two push brackets 26 are fixed at the lower end of the scraping shaft 21, and the two scraping plates 22 are both attached to the top of the filter cake hood 23. Each scraping plate 22 Each part consists of three sections: an arc-shaped section 221, an arched section 222, and an oil-pushing section 223. The arc-shaped section 221 and the oil-pushing section 223 are connected by the arched section 222. The lower ends of the two pusher frames 26 are rotatably connected to the rollers. A one-way guide assembly is provided at the center of the piston plate 25. A sealing ring is provided on the outer edge of the piston plate 25 for sealing with the inner wall of the guide cylinder 28. A sliding hole for sliding the vertical rod is opened at the center of the piston plate 25. Multiple annular guide ports are provided around the sliding hole of the piston plate 25. A pusher spring is fixed inside the guide cylinder 28, and the upper end of the pusher spring is fixed to the piston. At the bottom of plate 25, multiple overflow ports are provided on the outer side of guide cylinder 28 for the oil-water mixture to flow out. The output end of drive motor 5 is fixedly connected to the upper end of scraping shaft 21. The rotation of drive motor 5 drives scraping shaft 21 to rotate synchronously. The rotation of scraping shaft 21 drives the arc-shaped part 221 of scraping plate 22 to scrape at the top of filter cake cover 23. Since filter cake cover 23 has a conical structure, when scraping by the arc-shaped part 221 of scraping plate 22, impurities in the waste oil will slide from the center to the edge of filter cake cover 23, and most of them will be removed. Impurities will accumulate at the edge of the filter cake cover 23. As the scraper plate 22 rotates, the oil pushing part 223 scrapes up the impurities located at the edge of the filter cake cover 23 and accumulates them on its upper side. Since the upper end of the oil pushing part 223 is higher than the slag discharge port, as the scraper plate 22 continues to rotate, the impurities will gradually accumulate upward along the oil pushing part 223. When the impurities accumulate to the upper end of the oil pushing part 223, the impurities will flow out from the slag discharge port of the separator 11 and fall into the slag guide groove 12, thereby completing the cleaning of the filter cake cover 23 and avoiding clogging.

[0037] In this embodiment: the unidirectional conduit assembly includes a unidirectional frame 29, a vertical rod is provided in the middle of the unidirectional frame 29, and a partition is provided at the upper end of the vertical rod. A return spring is provided between the partition and the piston plate 25. A rubber sealing gasket is provided at the lower end of the vertical rod. A sealing ring is provided on the outer edge of the piston plate 25 for sealing with the inner wall of the guide cylinder 28. A sliding hole for sliding the vertical rod is opened at the center of the piston plate 25. Multiple annular guide ports are provided around the sliding hole of the piston plate 25. A push spring is fixed inside the guide cylinder 28, and the upper end of the push spring is fixed to the bottom of the piston plate 25. Multiple overflow ports for oil-water mixture to flow out are opened on the outer side of the guide cylinder 28. When the scraper shaft 21 rotates, the two pushers 26 at the lower end of the scraper shaft 21 drive the rotating wheels at their ends to rotate synchronously. During the rotation of the pushers 26, when the rotating wheels start to roll from the pusher seat 27, the pusher seat 27 will drive the piston plate 25 to move downward along the guide cylinder 28. When the guide cylinder 28 When moving downwards, a low-pressure area is formed between the filter cake cover 23 and the suction cover 24. At this time, the low-pressure area will suck the waste oil at the top of the filter cake cover 23, thereby accelerating the separation of waste oil and impurities and speeding up the entire filtration process. The waste oil sucked into the lower side of the filter cake cover 23 will fall onto the piston plate 25. When the piston plate 25 moves downwards and passes the overflow port of the guide cylinder 28, the waste oil will flow out from the overflow port and fall to the bottom of the separation cylinder 11 for sedimentation and stratification. When the rotor rolls over and disengages from the push seat 27, the push spring at the bottom of the guide cylinder 28 pushes the piston plate 25 upwards. At the same time, the one-way frame 29 will move downwards, so that the rubber sealing gasket at the lower end of the vertical rod will no longer block the guide port on the piston plate 25. At this time, as the piston plate 25 moves upwards, the residual waste oil and some air on the upper side of the piston plate 25 will be quickly discharged downwards from the guide port. Repeating the above actions can complete the rapid suction filtration and separation of impurities during waste oil filtration.

[0038] Working principle: When in use, the waste oil that needs to be separated from the oil is guided into the separation cylinder 11 through the oil inlet pipe 13, and the waste oil flows out from the center of the upper end of the filter sludge cover 23. At this time, the waste oil will flow downward from the top of the filter sludge cover 23 along its conical surface. During the flow of the waste oil, the impurities in the waste oil are filtered and separated by the filter sludge cover 23. At this time, the drive motor 5 drives the scraper shaft 21 to rotate.

[0039] like Figure 10As shown, when the scraping shaft 21 rotates, it drives the arc-shaped portion 221 of the scraping plate 22 to scrape the filter position at the top of the filter cake cover 23. Since the filter cake cover 23 has a conical structure, when the arc-shaped portion 221 of the scraping plate 22 scrapes, the impurities in the waste oil will slide from the center of the filter cake cover 23 to the edge. Then, most of the impurities will accumulate at the edge of the filter cake cover 23. At this time, as the scraping plate 22 rotates, the impurities located at the edge of the filter cake cover 23 are scraped up by the lower edge of the oil pushing portion 223, and the impurities will accumulate on the oil pushing portion 22. 3. On the upper side, since the oil pushing part 223 and the arc-shaped part 221 are connected by the arched part 222, the sludge or impurities on the oil pushing part 223 will not flow to the arc-shaped part 221. Since the upper edge of the oil pushing part 223 is higher than the slag discharge port, during the rotation of the scraper plate 22, the impurities will gradually accumulate upward along the oil pushing part 223. When the impurities accumulate to the upper edge of the oil pushing part 223, the impurities will flow out from the slag discharge port of the separator 11 and fall into the slag guide groove 12, thereby completing the cleaning of the filter slag cover 23 and avoiding clogging.

[0040] Furthermore, while the scraper shaft 21 drives the scraper plate 22 to rotate, the two pushers 26 at the lower end of the scraper shaft 21 drive the rotating wheels at their ends to rotate synchronously. During the rotation of the pushers 26, the rotating wheels begin to crush the pusher seat 27. At this time, the pusher seat 27 will drive the piston plate 25 to move downward along the guide cylinder 28. The guide cylinder 28 will form a low-pressure area between the filter cake cover 23 and the suction cover 24. At this time, the low-pressure area will suck up the waste oil at the top of the filter cake cover 23, thereby accelerating the separation of waste oil and impurities, and also accelerating the entire filtration process. The waste oil sucked into the lower side of the filter cake cover 23 will fall onto the piston plate 25 for temporary storage. When the piston plate 25 moves downward... When the piston plate moves downward and passes the overflow port of the guide cylinder 28, the waste oil on the piston plate 25 will flow out from the overflow port and fall to the bottom of the separator 11 for the next step of sedimentation and stratification. When the rotor disengages from the push seat 27, the push spring at the bottom of the guide cylinder 28 pushes the piston plate 25 upward. At the same time, the one-way frame 29 will move downward and compress the return spring, so that the rubber sealing gasket at the lower end of the vertical rod will no longer block the guide port on the piston plate 25. At this time, as the piston plate 25 moves upward, the residual waste oil and some air on the upper side of the piston plate 25 will be quickly discharged downward from the guide port. Repeating the above actions can complete the rapid suction, filtration and separation of impurities during waste oil filtration.

[0041] The separation of oil and water at the bottom of the separator 11 can be observed through observation window 4;

[0042] Once the water and oil in the waste oil have completely separated into layers, the water in the lower layer can be completely discharged from the discharge pipe of the separator 11 by opening the discharge valve 3, and then the separated oil can be discharged and collected.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A waste mineral oil recovery oil-water separation device, characterized by: Including separation mechanism (1), the inside of separation mechanism (1) is equipped with scraping mechanism (2), the lower side of separation mechanism (1) is equipped with export valve (3) for separating oil and water after precipitation; The separation mechanism (1) includes a separation cylinder (11), the upper end of the separation cylinder (11) is fixed with a cover plate (14), the middle position of the separation cylinder (11) is provided with a ring-shaped distribution of slag discharge port, the position of the separation cylinder (11) is fixed with a guide slag chute (12) at the slag discharge port. The scraping mechanism (2) includes a suction cover (24), the upper side of the suction cover (24) is fixed with a residue filter cover (23), the center position of the residue filter cover (23) is rotatably connected with a scraping shaft (21), the outer side of the scraping shaft (21) is fixed with two spiral structure scraping plates (22), the bottom of the suction cover (24) is fixed with a guide cylinder (28), the inside of the guide cylinder (28) is slidably connected with a piston plate (25), the top of the piston plate (25) is fixed with six top pushing seats (27) in a ring-shaped distribution, the lower end of the scraping shaft (21) is fixed with two top pushing frames (26), and the center position of the piston plate (25) is provided with a one-way conduction assembly.

2. A waste mineral oil recovery water-oil separation device according to claim 1, characterized in that: The two scraping plates (22) are attached to the top of the residue filter cover (23), each scraping plate (22) is composed of an arc-shaped part (221), an arch part (222) and an oil pushing part (223), the arc-shaped part (221) and the oil pushing part (223) are connected through the arch part (222), and the lower end of the two top pushing frames (26) is rotatably connected with a rotating wheel.

3. A waste mineral oil recovery water-oil separation device according to claim 1, characterized in that: The conical surface on the upper side of the separation cylinder (11) penetrates an oil inlet pipe (13), one end of the oil inlet pipe (13) extending into the separation cylinder (11) is sleeved on the outer side of the scraping shaft (21), the lower end of the separation cylinder (11) is fixed with a discharge pipe, and the conical surface on the lower side of the separation cylinder (11) is fixed with an observation window (4).

4. The waste mineral oil recovery water-oil separation device according to claim 1, characterized in that: The top of the cover plate (14) is fixedly provided with a driving motor (5), and the output end of the driving motor (5) is fixedly connected with the upper end of the scraping shaft (21).

5. A waste mineral oil recovery water-oil separation device according to claim 1, characterized in that: The one-way conduction assembly includes a one-way frame (29), a vertical rod is arranged at the middle position of the one-way frame (29), a top plate is arranged at the upper end of the vertical rod, a reset spring is arranged between the top plate and the piston plate (25), and a rubber sealing pad is arranged at the lower end of the vertical rod.

6. A waste mineral oil recovery water-oil separation device according to claim 1, characterized in that: A sealing ring for sealing with the inner wall of the guide cylinder (28) is arranged at the outer edge of the piston plate (25), a sliding hole for allowing the vertical rod to slide is arranged at the center position of the piston plate (25), and a plurality of ring-shaped flow guide openings are arranged at the periphery of the sliding hole of the piston plate (25).

7. A waste mineral oil recovery water-oil separation device according to claim 1, characterized in that: A pushing spring is fixedly arranged in the guide cylinder (28), the upper end of the pushing spring is fixed to the bottom of the piston plate (25), and a plurality of overflow openings for allowing the oil-water mixture to flow out are arranged on the outer side of the guide cylinder (28).

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