Oil-water separation device and oil-water separation system

Abstract

The utility model provides an oil-water separation device and an oil-water separation system. The oil-water separation device comprises an oil-water separation cavity, wherein the oil-water separation cavity is divided into a first cavity and a second cavity; wherein the first chamber comprises an oil-water inlet and an oil-water outlet of which the cross-sectional area is smaller than that of the oil-water inlet; the second chamber is communicated with the first chamber through the oil-water outlet; the second cavity is provided with a water outlet channel and an oil outlet channel, the oil-water outlet is located between the water outlet channel and the oil outlet channel in the height direction of the oil-water separation cavity, and the oil outlet channel is higher than the water outlet channel; the upper cavity wall of the second cavity is rotationally connected with a rotating plate, a first plate body of the rotating plate is arranged opposite to the oil-water outlet, and a second plate body of the rotating plate is connected with a piston matched with the oil outlet channel; and when an oil-water mixture flowing out of the first chamber from the oil-water outlet impacts the first plate body, the second plate body synchronously performs reciprocating rotation relative to the upper chamber wall of the second chamber, so that the piston closes / opens the oil outlet channel.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen waste treatment, and in particular relates to an oil-water separation device and an oil-water separation system. Background Art

[0002] Kitchen waste refers to the waste generated from daily life of residents and food processing, catering services, and corporate catering activities, including discarded vegetable leaves, leftovers, leftover rice, fruit peels, eggshells, tea dregs, bones, etc. Its main sources are family kitchens, restaurants, hotels, canteens, markets, and other industries related to food processing. Kitchen waste usually contains a large amount of wastewater, waste oil, and solid residues. After proper treatment, waste oil can be used as biodiesel, etc., and solid residues can be used to make fertilizers. In order to facilitate their treatment, these parts usually need to be separated and then treated separately. In the prior art, filtering is usually used to separate solid residues from waste oil and wastewater, while wastewater and waste oil are still mixed together, that is, oil-water mixture.

[0003] In order to quickly separate the oil-water mixture, the existing oil-water separation device mainly adopts the working principles of gravity separation, sedimentation separation, demulsification and agglomeration, etc. Among them, the oil-water separation device using the gravity separation principle specifically uses the density difference between the oil and water phases to allow the waste oil with low density to float on the surface of the wastewater, and automatically separates the oil and water through a scraper or pressure, but these two methods are easy to bring out the wastewater with high density below or the waste oil with low density above cannot be drained, or it is difficult to operate automatically. Therefore, further in the oil-water separation device, the technicians in this field set up an oil-water separation float valve similar to the Chinese patent with the authorization announcement number CN206600508U, and complete the oil-water separation work through the cooperation between the float and the oil guide pipe, but different density aqueous solutions have different buoyancy, so when the float is used in different aqueous solutions, the part of the float floating out of the aqueous solution will also be different, so the existing oil-water separation float valve can only be used for oil-water separation in aqueous solutions of a single density, and the scope of application is small. If it is used in aqueous solutions of other densities, the final result of oil-water separation will be unsatisfactory. Utility Model Content

[0004] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide an oil-water separation device and an oil-water separation system. The provided oil-water separation device is more suitable for oil-water separation work of aqueous solutions of various densities, and the automatic water-oil separation operation is more reliable.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The utility model provides an oil-water separation device, which comprises an oil-water separation chamber separated by a first chamber and a second chamber; wherein:

[0007] The first chamber comprises an oil-water inlet and an oil-water outlet having a smaller cross-sectional area than the oil-water inlet;

[0008] The second chamber is connected to the first chamber through the oil-water outlet; the second chamber is provided with a water outlet channel and an oil outlet channel, and in the height direction of the oil-water separation chamber, the oil-water outlet is located between the water outlet channel and the oil outlet channel, and the oil outlet channel is higher than the water outlet channel;

[0009] The upper cavity wall of the second chamber is rotatably connected to a rotating plate, the rotating plate includes a first plate body which is arranged opposite to the oil-water outlet, and the rotating plate includes a second plate body which is connected to a piston adapted to the oil outlet channel; when the oil-water mixture flowing out of the first chamber from the oil-water outlet impacts the first plate body, the second plate body synchronously rotates back and forth relative to the upper cavity wall of the second chamber, so that the piston closes / opens the oil outlet channel.

[0010] As a further description of the above technical solution, a limit rod is fastened to the oil-water separation chamber, and the limit rod has an abutting end opposite to the first plate body;

[0011] When the rotating plate rotates relative to the upper cavity wall of the second cavity, the plate surface of the first plate body facing the limiting rod can abut against the abutting end of the limiting rod to limit the rotation angle of the rotating plate.

[0012] As a further description of the above technical solution, a reinforcing rib plate is further provided between the first plate body and the second plate body of the rotating plate.

[0013] As a further description of the above technical solution, in the height direction of the oil-water separation chamber, the oil-water inlet is higher than the inlet end of the oil outlet channel.

[0014] As a further description of the above technical solution, an oil collecting tank connected to the oil outlet channel is formed above the oil-water separation chamber; the oil collecting tank is provided with an oil outlet lower than the outlet end of the oil outlet channel.

[0015] As a further description of the above technical solution, it also includes a slow flow chamber, which is connected to the first chamber through the oil-water inlet, and a liquid inlet is provided on the side wall of the slow flow chamber to input the oil-water mixture.

[0016] As a further description of the above technical solution, it also includes a water collecting chamber, which is connected to the second chamber through the water outlet channel, and a water outlet is provided on the side wall of the water collecting chamber to output wastewater.

[0017] As a further description of the above technical solution, a buffer plate is provided in the water collecting chamber, and the buffer plate divides the water collecting chamber into a third chamber and a fourth chamber connected to the upper end of the third chamber;

[0018] The bottom of the third chamber is connected to the second chamber through the water outlet channel;

[0019] The water outlet is arranged on the side wall of the fourth chamber.

[0020] As a further description of the above technical solution, the top end of the buffer plate is lower than the outlet end of the oil outlet channel and higher than the inlet end of the oil outlet channel.

[0021] The utility model also provides an oil-water separation system, comprising the oil-water separation device as described above.

[0022] By means of the above technical solution, the outstanding effects of the utility model are:

[0023] The oil-water separation device provided by the utility model comprises an oil-water separation chamber separated by a first chamber and a second chamber; wherein the first chamber comprises an oil-water inlet and an oil-water outlet with a cross-sectional area smaller than that of the oil-water inlet; the second chamber is connected with the first chamber through the oil-water outlet; the second chamber is provided with a water outlet channel and an oil outlet channel, in the height direction of the oil-water separation chamber, the oil-water outlet is located between the water outlet channel and the oil outlet channel, and the oil outlet channel is higher than the water outlet channel; the upper chamber wall of the second chamber is rotatably connected with a rotating plate, the first plate body included in the rotating plate is arranged opposite to the oil-water outlet to bear the impact of the oil-water mixture flowing out of the first chamber from the oil-water outlet; the second plate body included in the rotating plate is connected with a piston adapted to the oil outlet channel, when the rotating plate reciprocates relative to the upper chamber wall of the second chamber, the piston closes / opens the oil outlet channel, when the piston opens the oil outlet channel, the upper layer of waste oil obtained by stratification in the oil-water separation chamber can climb into the oil outlet channel, and when the piston closes the oil outlet channel again, the upper layer of waste oil climbing into the oil outlet channel can be lifted and discharged. The wastewater in the lower layer of the oil-water separation chamber will continue to flow out of the second chamber from the water outlet channel, thereby reliably realizing the automatic separation of water and oil. The piston is opened and closed cyclically by the impact of liquid on the rotating plate instead of relying on the buoyancy of the liquid. Therefore, the oil-water separation device provided by the utility model is more suitable for the oil-water separation of aqueous solutions with various densities. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the oil-water separation device in the embodiment of the utility model;

[0025] Figure 2 A cross-sectional view of an oil-water separation device from one perspective in an embodiment of the utility model;

[0026] Figure 3This is a cross-sectional view from another perspective of the oil-water separation device in the embodiment of the utility model.

[0027] Description of Figure Numbers:

[0028] 1. First chamber; 2. Second chamber; 3. Oil and water inlet; 4. Oil and water outlet; 5. Water outlet channel; 6. Oil outlet channel; 7. First plate body; 8. Second plate body; 9. Piston; 10. Limit rod; 11. Reinforcing rib plate; 12. Oil collecting trough; 13. Oil outlet; 14. Slow flow chamber; 15. Liquid inlet; 16. Water outlet; 17. Buffer plate; 18. Third chamber; 19. Fourth chamber. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0031] See also Figures 1 to 3 The utility model discloses an oil-water separation device, which includes an oil-water separation chamber separated by a first chamber 1 and a second chamber 2; wherein,

[0032] The first chamber 1 comprises an oil-water inlet 3 and an oil-water outlet 4 having a smaller cross-sectional area than the oil-water inlet 3;

[0033] The second chamber 2 is connected to the first chamber 1 through the oil-water outlet 4; the second chamber 2 is provided with a water outlet channel 5 and an oil outlet channel 6, and in the height direction of the oil-water separation chamber, the oil-water outlet 4 is located between the water outlet channel 5 and the oil outlet channel 6, and the oil outlet channel 6 is higher than the water outlet channel 5;

[0034] The upper cavity wall of the second chamber 2 is rotatably connected to a rotating plate, the rotating plate includes a first plate body 7 which is arranged opposite to the oil-water outlet 4, and the rotating plate includes a second plate body 8 which is connected to a piston 9 adapted to the oil outlet channel 6; when the oil-water mixture flowing out of the first chamber 1 from the oil-water outlet 4 hits the first plate body 7, the second plate body 8 synchronously rotates reciprocatingly relative to the upper cavity wall of the second chamber 2, so that the piston 9 closes / opens the oil outlet channel 6.

[0035] By means of the above structure, after the oil-water mixture flows into the first chamber 1 from the oil-water inlet 3, it will then flow from the oil-water outlet 4 of the first chamber 1 to the second chamber 2. Since the cross-sectional area of ​​the oil-water outlet 4 is smaller than the cross-sectional area of ​​the oil-water inlet 3, the speed of the oil-water mixture flowing through the oil-water outlet 4 will be greater than the speed of the oil-water mixture flowing through the oil-water inlet 3. The upper cavity wall of the second chamber 2 is rotatably connected with a rotating plate including a first plate body 7 and a second plate body 8, and the first plate body 7 is arranged opposite to the oil-water outlet 4. Therefore, in the process of the oil-water mixture flowing into the second chamber 2 through the oil-water outlet 4, the first plate body 7 will be impacted to make it away from the oil-water outlet 4, so that the rotating plate as a whole is The connection position between the second plate 8 and the upper wall of the second chamber 2 is used as the rotation reference. The plate 8 rotates at a certain angle relative to the upper wall of the second chamber 2. The portion of the second plate 8 that is not connected to the upper wall of the second chamber 2 gradually approaches the upper wall of the second chamber 2, and synchronously drives the piston 9 connected thereto to gradually close the oil outlet channel 6. Since the first plate 7 is impacted by the oil-water mixture and gradually moves away from the oil-water outlet 4, the actual impact force it receives is gradually weakened. When the piston 9 completely closes the oil outlet channel 6, the impact force received by the first plate 7 is the weakest, and then it will move in the opposite direction to reset, and synchronize the piston 9 with the second plate 8 to open the oil outlet channel 6 again, and continue to receive the next cycle of impact.

[0036] The oil-water mixture entering the second chamber 2 will continue to be stratified due to the density difference between the water and oil phases, that is, the wastewater will descend relative to the waste oil, and the waste oil will rise to float on the wastewater layer and gradually form an oil layer. Since the oil-water outlet 4 is located between the water outlet channel 5 and the oil outlet channel 6 in the height direction of the oil-water separation chamber, and the oil outlet channel 6 is higher than the water outlet channel 5, when the overall liquid level in the second chamber 2 is higher than the top of the oil-water outlet 4, the oil-water mixture will continue to enter the second chamber 2 to cyclically impact the first plate 7, but at this time, the oil-water mixture is mixed with the stratified liquid in the second chamber 2 from below the liquid level in the second chamber 2, so at least the oil layer between the oil-water outlet 4 and the oil outlet channel 6 will not be destroyed. As the first plate body 7 is reset, the piston 9 is driven by the second plate body 8 to open the oil outlet channel 6, and the oil-water mixture continues to flow into the second cavity. Part of the oil in the oil layer between the oil-water outlet 4 and the oil outlet channel 6 will rise and enter the oil outlet channel 6. Then the first plate body 7 is impacted again, and the piston 9 is driven by the second plate body 8 to close the oil outlet channel 6. The oil in the oil outlet channel 6 will be pushed out of the oil outlet channel 6 by the piston 9. The waste water in the lower layer will continue to flow out of the second chamber 2 from the water outlet channel 5, thereby reliably realizing the automatic separation of water and oil. The piston 9 is opened and closed cyclically by the impact of liquid on the rotating plate rather than relying on the buoyancy of the liquid. Therefore, the oil-water separation device provided by the utility model is more suitable for the oil-water separation of aqueous solutions of various densities.

[0037] See also Figure 2 and Figure 3 Specifically, in this embodiment, the oil-water inlet 3 of the first chamber 1 is arranged on its upper left side, and the oil-water outlet 4 is arranged on its lower right side. The rotating plate is integrally connected to the upper cavity wall of the second chamber 2 in a "V" shape and is rotatably connected near the oil-water outlet 4. When the oil-water mixture flows into the first chamber 1 through the oil-water inlet 3 and then flows into the second chamber 2 through the oil-water outlet 4, it will impact the first plate body 7 of the rotating plate to the right to make it rotate counterclockwise. Therefore, the second plate body 8 connected to the first plate body 7 will synchronously rotate upward counterclockwise with the connection position of the rotating plate and the upper cavity wall of the second chamber 2 as the rotation reference, so that the piston 9 connected thereto can gradually close the oil outlet channel 6. Then, the first plate body 7 is far away from the oil-water outlet 4, and the impact force it receives is reduced, so it will rotate in the opposite direction to reset, and synchronously drive the piston 9 to move downward through the second plate body 8 to open the oil outlet channel 6. Then, when the liquid level in the second chamber 2 continues to rise, the liquid (waste oil) at its liquid level will enter the oil outlet channel 6.

[0038] Specifically, in this embodiment, in order to limit the maximum value of the clockwise rotation of the rotating plate with the connection position between the rotating plate and the upper cavity wall of the second chamber 2 as the reference position, a horizontal limit rod 10 is provided in the oil-water separation chamber, and its right end serves as an abutment end. After the rotating plate is reset to a preset angle clockwise, the abutment end abuts against the left plate surface of the first plate body 7, so that the rotating plate will not continue to rotate clockwise. It should be understood that the position of the abutment end of the limit rod 10 can be set according to the maximum angle of the reset of the rotating plate, so the limit rod 10 is fastened to the oil-water separation chamber using a nut and a mounting frame to facilitate the adjustment of the position of its abutment end.

[0039] Specifically, in this embodiment, a triangular reinforcing rib plate 11 is provided between the opposite plate surfaces of the first plate body 7 and the second plate body 8 of the rotating plate to ensure the overall strength of the rotating plate and the synchronization of the rotation of the two plate bodies.

[0040] Specifically, in the present embodiment, in the vertical direction (i.e., in the height direction of the oil-water separation chamber), the oil-water inlet 3 is higher than the inlet end of the oil outlet channel 6, thereby ensuring that when the oil outlet channel 6 is opened, the liquid in the second chamber 2 can enter the oil outlet channel 6, but will not flow back to the first chamber 1 through the oil-water outlet 4 and overflow.

[0041] See also Figures 1 to 3 Specifically, in this embodiment, an oil collecting tank 12 in communication with the oil outlet channel 6 is formed above the oil-water separation chamber to temporarily store the waste oil discharged from the oil outlet channel 6. When the waste oil storage amount in the oil collecting tank 12 reaches a preset value, the waste oil will flow out from the oil outlet 13 provided in the oil collecting tank 12. The oil outlet 13 is lower than the outlet end of the oil outlet channel 6, which also ensures that the waste oil will not enter the oil outlet channel 6 from the oil collecting tank 12 and flow back into the second chamber 2.

[0042] Specifically, in this embodiment, the oil-water separation device further includes a slow flow chamber 14, which is arranged on the left side of the oil-water separation chamber, and is connected to the first chamber 1 through the oil-water inlet 3, and a liquid inlet 15 is arranged on the left side wall. When the oil-water mixture is separated, the oil-water mixture first enters the slow flow chamber 14 from the liquid inlet 15 for slow flow, and when the liquid level in the slow flow chamber 14 reaches the height of the oil-water inlet 3, the oil-water mixture will enter the oil-water separation chamber through the oil-water inlet 3 to perform the oil-water separation operation. More specifically, the slow flow chamber 14 is separated from the oil-water separation chamber by a partition, and the oil-water inlet 3 is formed above the partition.

[0043] Specifically, in this embodiment, the oil-water separation device further includes a water collecting chamber, which is arranged on the right side of the oil-water separation chamber, and is connected to the second chamber 2 of the oil-water separation chamber through the water outlet channel 5. A water outlet 16 is also provided on the side wall of the water collecting chamber for discharging the collected and temporarily stored wastewater. More specifically, a buffer plate 17 is provided in the water collecting chamber, and the buffer plate 17 divides the water collecting chamber into a third chamber 18 and a fourth chamber 19 connected to the upper end of the third chamber 18. The bottom of the third chamber 18 is connected to the second chamber 2 through the water outlet channel 5. The water outlet 16 is provided on the right side wall of the fourth chamber 19, so that the wastewater in the second chamber 2 first flows into the third chamber 18 through the water outlet channel 5. As the amount of wastewater increases, its liquid level reaches above the top of the buffer plate 17, and the wastewater will flow into the fourth chamber 19 and be discharged from the water outlet 16 on the right side wall of the fourth chamber 19.

[0044] See also Figure 2 Specifically, in the present embodiment, the top end of the buffer plate 17 is lower than the outlet end of the oil outlet channel 6 and higher than the inlet end of the oil outlet channel 6, so that when the oil outlet channel 6 is opened, the upper layer of waste oil obtained by stratification of the oil-water separation chamber that enters the oil outlet channel 6 can be pushed out of the oil outlet channel 6 as the piston 9 moves upward to close the oil outlet channel 6.

[0045] Specifically, the utility model also provides an oil-water separation system, including the oil-water separation device as described above. The structure of the oil-water separation device is the same as that described above and will not be described in detail here.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oil-water separation device, characterized in that: It includes an oil-water separation chamber separated by a first chamber and a second chamber; wherein, The first chamber comprises an oil-water inlet and an oil-water outlet having a smaller cross-sectional area than the oil-water inlet; The second chamber is connected to the first chamber through the oil-water outlet; the second chamber is provided with a water outlet channel and an oil outlet channel, and in the height direction of the oil-water separation chamber, the oil-water outlet is located between the water outlet channel and the oil outlet channel, and the oil outlet channel is higher than the water outlet channel; The upper cavity wall of the second chamber is rotatably connected to a rotating plate, the rotating plate includes a first plate body which is arranged opposite to the oil-water outlet, and the rotating plate includes a second plate body which is connected to a piston adapted to the oil outlet channel; when the oil-water mixture flowing out of the first chamber from the oil-water outlet impacts the first plate body, the second plate body synchronously rotates back and forth relative to the upper cavity wall of the second chamber, so that the piston closes / opens the oil outlet channel.

2. The oil-water separation device according to claim 1, characterized in that: A limit rod is fastened in the oil-water separation chamber, and the limit rod has an abutting end opposite to the first plate body; When the rotating plate rotates relative to the upper cavity wall of the second cavity, the plate surface of the first plate body facing the limiting rod can abut against the abutting end of the limiting rod to limit the rotation angle of the rotating plate.

3. The oil-water separation device according to claim 1, characterized in that: A reinforcing rib plate is also provided between the first plate body and the second plate body of the rotating plate.

4. The oil-water separation device according to claim 1, characterized in that: In the height direction of the oil-water separation chamber, the oil-water inlet is higher than the inlet end of the oil outlet channel.

5. The oil-water separation device according to claim 1, characterized in that: An oil collecting groove communicated with the oil outlet passage is formed above the oil-water separation chamber; the oil collecting groove is provided with an oil outlet lower than the outlet end of the oil outlet passage.

6. The oil-water separation device according to claim 1, characterized in that: It also includes a slow flow cavity, which is connected with the first chamber through the oil-water inlet, and a liquid inlet is arranged on the side wall of the slow flow cavity to input the oil-water mixture.

7. The oil-water separation device according to claim 1, characterized in that: It also includes a water collecting chamber, which is connected with the second chamber through the water outlet channel, and a water outlet is provided on the side wall of the water collecting chamber to output waste water.

8. The oil-water separation device according to claim 7, characterized in that: A buffer plate is provided in the water collecting chamber, and the buffer plate divides the water collecting chamber into a third chamber and a fourth chamber connected to the upper end of the third chamber; The bottom of the third chamber is connected to the second chamber through the water outlet channel; The water outlet is arranged on the side wall of the fourth chamber.

9. The oil-water separation device according to claim 8, characterized in that: The top end of the buffer plate is lower than the outlet end of the oil outlet channel and higher than the inlet end of the oil outlet channel.

10. An oil-water separation system, characterized in that: Comprising the oil-water separation device as described in any one of claims 1 to 9.

Images