Compressed air drainage oil-water separation device

Abstract

The invention relates to the technical field of oil-water separation, and provides a compressed air drainage oil-water separation device which comprises a separation box, oil absorption cotton and a control terminal, partition plates are arranged in the separation box, and the multiple partition plates divide the space of the separation box into multiple separation cavities; the multiple pieces of oil absorption cotton are arranged, and the oil absorption cotton is detachably arranged in the separation cavity; the side wall of the oil absorption cotton is attached to the cavity wall of the separation cavity, and the oil absorption cotton is slidably connected to the cavity wall of the separation cavity; a water outlet is formed in the other end of the separation box; a water inlet pipe and a water inlet valve are arranged at the water inlet of the separation box; the other end of the water inlet pipe is communicated with the oil-water separation tank; a water outlet pipe and a water outlet valve are arranged at a water outlet of the separation box; the other end of the water outlet pipe is communicated to a sewage pipe network; a water passing opening is formed in the bottom of the partition plate in a penetrating mode, and a water passing valve is arranged at the water passing opening; the water inlet valve, the water outlet valve and the water passing valve are in communication connection with a control terminal. The device has the effect of reducing the possibility that oil is discharged to a sewage pipe network.

Description

Technical Field

[0001] This application relates to the field of oil-water separation technology, and in particular to a compressed air drainage oil-water separation device. Background Art

[0002] In a compressed air system, condensers and gas storage tanks in a refrigerated dryer will regularly drain a certain amount of condensed water. This part of the wastewater is collected through a drainage pipe into an oil-water separation tank in the system for oil-water separation. However, due to seasonal and weather factors, the drainage volume of the wastewater generated by the compressed air system varies greatly, resulting in the treatment effect of the oil-water separation tank often being unable to match the drainage volume, unable to ensure the oil-water separation effect, and thus the separated oil will be discharged from the drainage pipe of the oil-water separation tank into the sewage network, posing a potential environmental protection hazard to the sewage system. Summary of the Invention

[0003] In order to reduce the possibility of oil being discharged into the sewage network, this application provides a compressed air drainage oil-water separation device.

[0004] A compressed air drainage oil-water separation device provided by this application adopts the following technical solutions: A compressed air drainage oil-water separation device includes a separation tank, oil-absorbing cotton, and a control terminal. A plurality of partitions are arranged in the separation tank at intervals along the length direction of the separation tank, and the space of the separation tank is divided into a plurality of separation chambers by the plurality of partitions; a plurality of oil-absorbing cotton are provided, and the oil-absorbing cotton is detachably arranged in the separation chambers, and the plurality of oil-absorbing cotton correspond to the plurality of separation chambers one by one; the side wall of the oil-absorbing cotton is attached to the wall of the separation chamber, and the oil-absorbing cotton is slidably connected to the wall of the separation chamber along the height direction of the separation chamber; one end of the separation tank is provided with a water inlet, and the other end is provided with a water outlet; the separation tank is provided with a water inlet pipe and a water inlet valve at the position of the water inlet, and the other end of the water inlet pipe is communicated with the oil-water separation tank; the separation tank is provided with a water outlet pipe and a water outlet valve at the water outlet, and the other end of the water outlet pipe is communicated with the sewage network; a water passing port is penetrated through the bottom of the partition, and a water passing valve is arranged at the water passing port of the partition; the water inlet valve, the water outlet valve, and the water passing valve are communicatively connected to the control terminal.

[0005] By adopting the above technical solutions, an oil-water separation device is added between the oil-water separation tank and the sewage network to address the problem of large variations in the drainage volume of the compressed air system.

[0006] Specifically, when sewage is discharged from the drain outlet of the oil-water separation tank, the control terminal is used to open the inlet valve, so that the sewage enters the first separation chamber in the separation tank through the inlet pipe and the inlet; after the sewage enters the separation chamber, it reaches between the bottom wall of the separation chamber and the oil-absorbing cotton, and the sewage exerts an upward force on the oil-absorbing cotton, causing the oil-absorbing cotton to gradually move upward; after the bearing capacity in the first separation chamber reaches the limit, the control terminal first closes the inlet valve; After the sewage in the first separation chamber stands for a period of time, part of the oil is adsorbed by the oil-absorbing cotton in the first separation chamber; then the control terminal is used to open the water connection valve between the first separation chamber and the second separation chamber, so that the sewage that has undergone the first oil-water separation in the first separation chamber enters the next separation chamber; After the sewage in the first separation chamber completely enters the next separation chamber, the inlet valve is reopened to allow the newly discharged sewage in the oil-water separation tank to enter the first separation chamber; then the above steps are repeated, so that the sewage undergoes multiple oil-water separation treatments before reaching the sewage pipe network after leaving the oil-water separation tank, without the need for separate modification of the oil-water separation device, and the position of the oil-absorbing cotton in the oil-water separation device depends on the amount of drainage, so it is suitable for situations with large changes in drainage volume, and can effectively reduce the possibility of oil being discharged into the sewage pipe network.

[0007] Optionally, a pressure sensor is provided on the bottom wall of the separation chamber, and the pressure sensor is used to obtain the pressure signal received by the bottom wall of the separation chamber and send the pressure signal to the control terminal; a first driving member is provided in the separation chamber, and the first driving member is used to drive the oil-absorbing cotton to slide relative to the separation chamber, and the first driving member is communicatively connected to the control terminal.

[0008] By adopting the above technical solution, the pressure signal received by the bottom wall of the separation chamber is obtained through the pressure sensor and sent to the control terminal; the control terminal calculates the depth of the sewage at this time, that is, the position where the oil-absorbing cotton should be, according to the pressure signal, the area of the bottom wall of the separation chamber and the density of the sewage; the control terminal drives the oil-absorbing cotton to the above position where the oil-absorbing cotton should be through the first driving member, reducing the possibility of sewage seeping out between the oil-absorbing cotton and the chamber wall of the separation chamber; when the sewage in the separation chamber is in a static state, the oil-absorbing cotton is moved down a little at regular intervals to ensure that the oil-absorbing surface is always in an effective oil-absorbing state.

[0009] Optionally, the oil-absorbing cotton includes a frame body and an oil-absorbing cotton body, the frame body is circumferentially arranged around the oil-absorbing cotton body, the frame body is used to fit with the chamber wall of the separation chamber, and the frame body is used for the first driving member to connect.

[0010] By adopting the above technical solution, the cotton body is installed in the frame body, and the rigidity of the cotton body is established by using the frame body, which is convenient for installation and control.

[0011] Optionally, limiting bars are respectively arranged on the upper and lower sides of the frame body, and the limiting bars are used for abutting against the surface of the oil-absorbing cotton body.

[0012] By adopting the above technical solution, the cotton body is limited by the limiting bars, and the connection stability between the cotton body and the frame body is increased.

[0013] Optionally, a rolling shaft is rotatably connected to the surface of the frame body for contacting the cavity wall of the separation cavity, and the rotation axis of the rolling shaft is in the horizontal direction.

[0014] By adopting the above technical solution, the friction between the frame body and the cavity wall of the separation cavity is rolling friction, the wear of the cavity wall of the separation cavity and the frame body is reduced, and at the same time, the smoothness of the movement of the frame body relative to the separation cavity is improved.

[0015] Optionally, the oil-absorbing cotton body is detachably connected to the frame body.

[0016] By adopting the above technical solution, it is convenient to replace the cotton body after using for a period of time.

[0017] Optionally, the output end of the first driving member is connected with a mounting seat for connecting the frame body; a second driving member is arranged on the mounting seat, the output shaft of the second driving member is connected to the frame body, and the oil-absorbing cotton is symmetrically arranged with the output shaft of the second driving member as the axis; the second driving member is used for driving the oil-absorbing cotton to flip.

[0018] By adopting the above technical solution, after the sewage in the separation cavity is subjected to the first treatment, the oil in the oil-absorbing cotton mostly accumulates on the side of the oil-absorbing cotton close to the sewage (defining this side as the first side and the other side of the oil-absorbing cotton as the second side). At this time, the control terminal controls the oil-absorbing cotton to flip through the second driving member, so that the first side is flipped to a position away from the sewage, thereby using the cleaner second side of the oil-absorbing cotton to perform oil absorption treatment on the sewage entering the separation cavity for the second time; during the oil absorption treatment process, the oil closer to the first side will also gradually transfer to the middle of the oil-absorbing cotton under the action of its own gravity; after the second oil absorption treatment is completed, the control terminal controls the oil-absorbing cotton to flip again. At this time, since the oil at the first side has gradually transferred to the middle position of the oil-absorbing cotton, the first side becomes a cleaner side. In this way, the utilization rate of the oil-absorbing cotton is improved, the service life of the oil-absorbing cotton is prolonged, and the replacement frequency of the oil-absorbing cotton is reduced.

[0019] Optionally, two layers of oil-absorbing cotton bodies are arranged, and an oil storage cotton body is arranged between the two layers of oil-absorbing cotton bodies.

[0020] By adopting the above technical solution, the oil storage cotton body is used to store the oil from the oil-absorbing cotton body, and the service life of the oil-absorbing cotton body is further prolonged.

[0021] Optionally, a first oil separation film is provided on the surface of the oil-absorbing cotton body close to the oil storage cotton body, and a plurality of first oil passage holes are formed through the first oil separation film; a second oil separation film is covered outside the oil storage cotton body, and a plurality of second oil passage holes are formed through the second oil separation film; an oil passage pipe is arranged between the first oil separation film and the second oil separation film, and two ends of the oil passage pipe are respectively communicated with the relatively arranged first oil passage hole and the second oil passage hole.

[0022] By adopting the above technical solution, an oil component channel is established between the oil-absorbing cotton body and the oil storage cotton body by means of the oil passage pipe, the first oil passage hole and the second oil passage hole, so that the oil components can be transferred from the oil-absorbing cotton body to the oil storage cotton body more orderly and evenly.

[0023] Optionally, the oil passage pipe is an elastic hose; a first pressure plate and a second pressure plate are arranged between the oil storage cotton body and the oil-absorbing cotton body, and the second pressure plate is located between the first pressure plate and the oil-absorbing cotton body; both the first pressure plate and the second pressure plate are slidably connected to the frame body along the thickness direction of the frame body, and there is a gap between the first pressure plate and the second pressure plate; the frame body is provided with a third driving member, the third driving member is communicatively connected to the control terminal, and the third driving member is used to drive the second pressure plate to move relative to the frame body; a plurality of first through holes for the oil passage pipe to pass through are formed through the first pressure plate, and the aperture of the first through hole is the same as the outer diameter of the oil passage pipe; a plurality of second through holes for the oil passage pipe to pass through are formed through the second pressure plate, and the aperture of the second through hole is the same as the outer diameter of the oil passage pipe; the plurality of first through holes and the plurality of second through holes are arranged in a staggered manner.

[0024] By adopting the above technical solution, after the oil storage amount in the oil storage cotton body reaches a certain amount, the third driving member is controlled to start through the control terminal, and the third driving member drives the second pressure plate to move towards the direction close to the oil storage cotton body; after the second pressure plate abuts against the first pressure plate, it continues to drive the first pressure plate to move synchronously towards the direction close to the oil storage cotton body. Finally, the first pressure plate and the second pressure plate on both sides of the oil storage cotton body form extrusion on the oil storage cotton body. At the same time, due to the staggered arrangement of the first through holes and the second through holes, the first pressure plate and the second pressure plate form clamping extrusion on the oil passage pipe, temporarily cutting off the passage of oil components between the oil-absorbing cotton body and the oil storage cotton body, so as to squeeze out the oil components in the oil storage cotton body from the oil outlet hole, so that the oil components enter the externally connected oil storage device through the oil outlet pipe, thereby prolonging the service life of the oil storage cotton body, further prolonging the service life of the oil-absorbing cotton body, and reducing the replacement frequency.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: By arranging an oil-water separation device between the oil storage and separation tank and the sewage pipe network, the oil-water separation device includes a separation box and a partition board. The partition board divides the inner cavity of the separation box into multiple separation chambers. An oil-absorbing cotton that can rise together with the sewage liquid level is arranged in the separation chamber, so that the oil-water separation device is applicable to different drainage volumes and reduces the possibility of oil adhering to the sewage pipe network; By arranging a second driving member, driving the oil-absorbing cotton to flip by the second driving member, and using both sides of the oil-absorbing cotton to alternately perform oil absorption treatment, the service life of the oil-absorbing cotton is prolonged; By arranging an oil storage cotton body between two layers of oil-absorbing cotton bodies, and arranging a first pressure plate and a second pressure plate between the oil-absorbing cotton body and the oil storage cotton body. A second oil separation film is included on the outer layer of the oil storage cotton body. After the oil content in the oil storage cotton body reaches a certain amount, the first pressure plate and the second pressure plate on both sides of the oil storage cotton body are used to clamp and squeeze the oil storage cotton body, and the oil content in the oil storage cotton body is squeezed out, so as to prolong the service life of the oil storage cotton body, and further prolong the service life of the oil-absorbing cotton body. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present application.

[0027] Figure 2 It is a schematic structural diagram for showing the oil-absorbing cotton.

[0028] Figure 3 It is Figure 1 An enlarged schematic diagram at part A.

[0029] Figure 4 It is a schematic structural diagram of Embodiment 2 of the present application.

[0030] Figure 5 It is Figure 4 An enlarged schematic diagram at part B.

[0031] Figure 6 Schematic structural diagram of Embodiment 3 of the present application.

[0032] Figure 7 It is a schematic structural diagram of Embodiment 4 of the present application.

[0033] Figure 8 It is Figure 7 An enlarged schematic diagram at part C.

[0034] Description of reference numerals: 1. Separation tank; 11. Separation chamber; 12. Water inlet; 121. Water inlet valve; 13. Water outlet; 131. Water outlet valve; 14. Pressure sensor; 15. First driving member; 16. Installation groove; 2. Oil-absorbing cotton; 21. Frame body; 211. Limit strip; 212. Groove; 213. Connecting block; 214. Third driving member; 22. Oil-absorbing cotton body; 221. First oil separation film; 222. First oil through hole; 23. Rolling shaft; 24. Mounting seat; 241. First block; 242. Second block; 25. Second driving member; 26. Oil storage cotton body; 261. Second oil separation film; 262. Second oil through hole; 263. Oil pipe; 27. First pressure plate; 271. First through hole; 28. Second pressure plate; 281. Second through hole; 3. Control terminal; 4. Partition; 41. Water through hole; 411. Water through valve. Detailed implementation mode

[0035] The following further describes the present application in conjunction with the attached Figure 1 - attached Figure 8 to make a further detailed description of the present application.

[0036] The inventor of the present application found that the waste water discharge from the cold dryer and the air storage tank in the compressed air system fluctuates greatly, and the existing oil-water separation devices are difficult to adapt to this change, resulting in poor oil-water separation effect and potential environmental protection discharge hazards. Therefore, a compressed air drainage oil-water separation device described in the present application is added between the oil storage separation tank and the sewage pipe network to further treat the sewage. The technical solution adopted in the present application can better cope with the situation of large changes in the discharge volume. The following is a further detailed description of the present application.

[0037] Embodiment 1 Refer to Figure 1 , a compressed air drainage oil-water separation device includes a separation tank 1, an oil-absorbing cotton 2 and a control terminal 3. A plurality of partitions 4 are arranged in the separation tank 1, and the plurality of partitions 4 are arranged at intervals along the length direction of the separation tank 1. The plurality of partitions 4 divide the space of the separation tank 1 into a plurality of separation chambers 11. A plurality of oil-absorbing cottons 2 are provided, and the oil-absorbing cottons 2 are detachably arranged in the separation chambers 11, and the plurality of oil-absorbing cottons 2 correspond to the plurality of separation chambers 11 one by one. The side wall of the oil-absorbing cotton 2 is attached to the chamber wall of the separation chamber 11, and the oil-absorbing cotton 2 is slidably connected to the chamber wall of the separation chamber 11 along the height direction of the separation chamber 11.

[0038] One end of the separation tank 1 is provided with a water inlet 12, and the other end is provided with a water outlet 13. The separation tank 1 is provided with a water inlet pipe and a water inlet valve 121 at the position of the water inlet 12, and the other end of the water inlet pipe is communicated with the oil-water separation tank. The separation tank 1 is provided with a water outlet pipe and a water outlet valve 131 at the water outlet 13, and the other end of the water outlet pipe is communicated with the sewage pipe network.

[0039] A water passing port 41 is formed through the bottom of the partition plate 4, and a water passing valve 411 is arranged at the water passing port 41 of the partition plate 4. The inlet valve 121, the outlet valve 131 and the water passing valve 411 are all one-way valves and are all communicatively connected to the control terminal 3.

[0040] Referring to Figure 2 and Figure 3 , specifically, the oil absorbent cotton 2 includes a frame body 21 and an oil absorbent cotton body 22. The frame body 21 is arranged around the circumference of the oil absorbent cotton body 22, and the side wall of the frame body 21 is used for fitting with the wall of the separation chamber 11. Limit strips 211 are integrally formed on both the upper and lower sides of the frame body 21. The two limit strips 211 are respectively used for the upper surface and the lower surface of the oil absorbent cotton body 22 to abut against, so as to limit the oil absorbent cotton body 22.

[0041] In this embodiment, the upper and lower surfaces of the oil absorbent cotton body 22 are both square. The frame body 21 includes four enclosing strips, and the four enclosing strips correspond to the four side walls of the oil absorbent cotton body 22. A groove 212 is formed at the middle position of the enclosing strip. The concave surface of the groove 212 faces the wall of the separation chamber 11. Connecting blocks 213 are arranged at both ends of the groove 212. A rolling shaft 23 is arranged in the groove 212, and the end of the rolling shaft 23 is rotatably connected to the connecting block 213 with the central axis of the rolling shaft 23 as the axis.

[0042] Furthermore, in this embodiment, the rolling shaft 23 is made of silica gel or rubber material to reduce the upward seepage of the sewage in the separation chamber 11.

[0043] The implementation principle of Embodiment 1 is as follows: When sewage is discharged from the drain port of the oil-water separation tank, the inlet valve 121 is opened through the control terminal 3, so that the sewage enters the first separation chamber 11 in the separation tank 1 through the water inlet pipe and the water inlet 12; after the sewage enters the separation chamber 11, it reaches between the bottom wall of the separation chamber 11 and the oil absorbent cotton 2, and the sewage exerts an upward force on the oil absorbent cotton 2, causing the oil absorbent cotton 2 to gradually move upward; after the bearing capacity in the first separation chamber 11 reaches the limit, the inlet valve 121 is closed through the control terminal 3.

[0044] After the sewage in the first separation chamber 11 stands for a period of time, part of the oil is adsorbed by the oil absorbent cotton 2 in the first separation chamber 11; then the water passing valve 411 between the first separation chamber 11 and the second separation chamber 11 is opened through the control terminal 3, so that the sewage that has undergone the first oil-water separation in the first separation chamber 11 enters the next separation chamber 11.

[0045] After the sewage in the first separation chamber 11 completely enters the next separation chamber 11, the inlet valve 121 is reopened to allow the newly discharged sewage in the oil-water separation tank to enter the first separation chamber 11; then the above steps are repeated so that the sewage undergoes multiple oil-water separation processes before leaving the oil-water separation tank and reaching the sewage pipe network. By using the above method, there is no need to modify the oil-water separation device separately, and the position of the oil-absorbing cotton 2 in the oil-water separation device depends on the amount of drainage, so it is suitable for situations with large fluctuations in drainage volume, and can effectively reduce the possibility of oil being discharged into the sewage pipe network.

[0046] After the oil-absorbing cotton 2 is used for a period of time, to replace it, the oil-absorbing cotton body 22 is removed from the frame body 21, and a new oil-absorbing cotton body 22 is replaced.

[0047] In summary, by dividing the separation tank 1 into multiple separation chambers 11 and arranging the oil-absorbing cotton 2 in each separation chamber 11, the surface area of oil-water separation can be effectively increased, and the separation efficiency can be improved. The design of the oil-absorbing cotton 2 sliding along the height direction of the separation chamber 11 enables the oil-absorbing cotton 2 to be adjusted according to the change of the wastewater liquid level, so that it is always in the best oil-absorbing position. In addition, through the intelligent control of the inlet valve 121, the outlet valve 131 and the water-passing valve 411 by the control terminal 3, the precise regulation of the entire oil-water separation process can be realized, ensuring that the separation effect is less affected by the drainage volume fluctuation.

[0048] Embodiment 2 Refer to Figure 4 and Figure 5 In this embodiment, the difference from Embodiment 1 is that a pressure sensor 14 is provided on the bottom wall of the separation chamber 11. The pressure sensor 14 is used to obtain the pressure signal received by the bottom wall of the separation chamber 11 and send the pressure signal to the control terminal 3.

[0049] A first driving member 15 is provided in the separation chamber 11. The first driving member 15 is used to drive the oil-absorbing cotton 2 to slide relative to the separation chamber 11, and the first driving member 15 is communicatively connected to the control terminal 3.

[0050] Specifically, a mounting seat 24 is fixedly connected to the side wall of the frame body 21, and a mounting groove 16 is formed in the chamber wall of the separation chamber 11 along its height direction for the mounting seat 24 to slidably connect. The first driving member 15 is installed in the mounting groove 16, and the output end of the first driving member 15 is connected to the mounting seat 24.

[0051] Specifically, the pressure sensor 14 is a piezoelectric pressure sensor 14 or a resistive pressure sensor 14, and is installed at the central position of the bottom wall of the separation chamber 11 for real-time monitoring of the liquid pressure in the separation chamber 11. The first driving member 15 is a cylinder or a hydraulic cylinder.

[0052] The implementation principle of Embodiment 2 is as follows: The pressure sensor 14 is used to obtain the pressure signal received by the bottom wall of the separation chamber 11 and send the pressure signal to the control terminal 3; the control terminal 3 calculates the depth of the sewage at this time based on the pressure signal, the area of the bottom wall of the separation chamber 11, and the density of the sewage, that is, the position where the oil-absorbing cotton 2 should be; the control terminal 3 drives the oil-absorbing cotton 2 to the position where the oil-absorbing cotton 2 should be through the first driving member 15, reducing the possibility of sewage seeping out between the oil-absorbing cotton 2 and the chamber wall of the separation chamber 11; when the sewage in the separation chamber 11 is in a static state, the oil-absorbing cotton 2 is lowered a little at regular intervals to ensure that the oil-absorbing surface is always in an effective oil-absorbing state.

[0053] By arranging the pressure sensor 14 on the bottom wall of the separation chamber 11, the liquid pressure in the separation chamber 11 can be monitored in real time, thereby providing feedback information for the control terminal 3. The addition of the first driving member 15 makes the sliding of the oil-absorbing cotton 2 more flexible and can be dynamically adjusted according to actual needs. This design not only improves the efficiency of oil-water separation but also enhances the adaptability of the device.

[0054] Embodiment 3 Refer to Figure 6 , the difference between this embodiment and Embodiment 2 is that the mounting seat 24 includes a first block 241 and a second block 242. The first block 241 is fixedly connected to the frame body 21, the second block 242 is fixedly connected to the first driving member 15, and the first block 241 can rotate relative to the second block 242 with the horizontal central axis of the oil-absorbing cotton 2 as the axis.

[0055] A second driving member 25 is installed on the second block 242. The output shaft of the second driving member 25 is connected to the frame body 21. The second driving member 25 is used to drive the oil-absorbing cotton 2 to flip, so as to realize uniform oil absorption on both sides of the oil-absorbing cotton 2.

[0056] The second driving member 25 is also communicatively connected to the control terminal 3. After the sewage in the separation chamber 11 flows into the next separation chamber 11, the second driving member 25 is started through the control terminal 3, and the second driving member 25 is used to drive the oil-absorbing cotton 2 to flip.

[0057] The implementation principle of Embodiment 3 is as follows: After the sewage in the separation chamber 11 is treated for the first time, the oil in the oil-absorbing cotton 2 mostly accumulates on the side of the oil-absorbing cotton 2 close to the sewage (this side is defined as the first side, and the other side of the oil-absorbing cotton 2 is defined as the second side). At this time, the control terminal 3 controls the oil-absorbing cotton 2 to flip through the second driving member 25, so that the first side flips to a position away from the sewage, thereby using the cleaner second side of the oil-absorbing cotton 2 to absorb oil from the sewage that enters the separation chamber 11 for the second time; during the oil-absorbing process, the oil closer to the first side will also gradually transfer to the middle of the oil-absorbing cotton 2 under the action of its own gravity; after the oil-absorbing treatment is completed for the second time, the control terminal 3 controls the oil-absorbing cotton 2 to flip again. At this time, since the oil at the first side has gradually transferred to the middle position of the oil-absorbing cotton 2, the first side becomes a cleaner side. By repeating this process, the utilization rate of the oil-absorbing cotton 2 is improved, the service life of the oil-absorbing cotton 2 is extended, and the replacement frequency of the oil-absorbing cotton 2 is reduced.

[0058] Embodiment 4 Referring to Figure 7 and Figure 8 , the difference between this embodiment and Embodiment 3 is that the oil-absorbing cotton body 22 is provided with two layers, and an oil storage cotton body 26 is arranged between the two layers of oil-absorbing cotton bodies 22. A first oil separation film 221 is arranged on the surface of the oil-absorbing cotton body 22 close to the oil storage cotton body 26, and a plurality of first oil through holes 222 are formed through the first oil separation film 221. The oil storage cotton body 26 is covered with a second oil separation film 261, and a plurality of second oil through holes 262 are formed through the second oil separation film 261. A through oil pipe 263 is arranged between the first oil separation film 221 and the second oil separation film 261, and both ends of the through oil pipe 263 are respectively communicated with the relatively arranged first oil through holes 222 and second oil through holes 262.

[0059] The through oil pipe 263 is made of an elastic hose, which is made of silicone or rubber material and has good flexibility.

[0060] A first pressure plate 27 and a second pressure plate 28 are arranged between the oil storage cotton body 26 and the oil absorption cotton body 22, and the second pressure plate 28 is located between the first pressure plate 27 and the oil absorption cotton body 22. Both the first pressure plate 27 and the second pressure plate 28 are slidably connected to the frame body 21 along the thickness direction of the frame body 21, and there is a gap between the first pressure plate 27 and the second pressure plate 28. The frame body 21 is provided with a third driving member 214, and the third driving member 214 is communicatively connected to the control terminal 3. The third driving member 214 is used to drive the second pressure plate 28 to move relative to the frame body 21. The first pressure plate 27 is provided with a plurality of first through holes 271 for the through oil pipe 263 to pass through, and the aperture of the first through hole 271 is the same as the outer diameter of the through oil pipe 263. The second pressure plate 28 is provided with a plurality of second through holes 281 for the through oil pipe 263 to pass through, and the aperture of the second through hole 281 is the same as the outer diameter of the through oil pipe 263. The plurality of first through holes 271 and the plurality of second through holes 281 are arranged staggeredly.

[0061] The principle of Embodiment 4 is as follows: After the oil storage amount in the oil storage cotton body 26 reaches a certain amount, the control terminal 3 controls the third driving member 214 to start, and the third driving member 214 drives the second pressure plate 28 to move towards the oil storage cotton body 26; after the second pressure plate 28 abuts against the first pressure plate 27, it continues to drive the first pressure plate 27 to move synchronously towards the oil storage cotton body 26. Finally, the first pressure plate 27 and the second pressure plate 28 on both sides of the oil storage cotton body 26 form extrusion on the oil storage cotton body 26. At the same time, due to the staggered arrangement of the first through holes 271 and the second through holes 281, the first pressure plate 27 and the second pressure plate 28 form clamping extrusion on the through oil pipe 263, temporarily cutting off the passage of oil between the oil absorption cotton body 22 and the oil storage cotton body 26, so as to squeeze out the oil in the oil storage cotton body 26 from the oil outlet, and make the oil enter the externally connected oil storage device through the oil outlet pipe, thereby prolonging the service life of the oil storage cotton body 26, further prolonging the service life of the oil absorption cotton body 22, and reducing the replacement frequency.

[0062] The above are all the preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A compressed air drainage oil-water separation device, characterized in that: It includes a separation box (1), oil-absorbing cotton (2) and a control terminal (3). Multiple partitions (4) are arranged in the separation box (1), and the multiple partitions (4) are arranged at intervals along the length direction of the separation box (1). The multiple partitions (4) divide the space of the separation box (1) into multiple separation chambers (11). Multiple oil-absorbing cotton (2) are provided, and the oil-absorbing cotton (2) is detachably arranged in the separation chamber (11). The multiple oil-absorbing cotton (2) correspond to the multiple separation chambers (11) one by one. The side wall of the oil-absorbing cotton (2) is attached to the wall of the separation chamber (11), and the oil-absorbing cotton (2) is slidably connected to the wall of the separation chamber (11) along the height direction of the separation chamber (11). One end of the separation box (1) is provided with a water inlet (12), and the other end is provided with a water outlet (13). The separation box (1) is provided with a water inlet pipe and a water inlet valve (121) at the position of the water inlet (12), and the other end of the water inlet pipe is communicated with an oil-water separation tank. The separation box (1) is provided with a water outlet pipe and a water outlet valve (131) at the water outlet (13), and the other end of the water outlet pipe is communicated with the sewage network. A water passing port (41) is penetrated through the bottom of the partition (4), and a water passing valve (411) is arranged at the water passing port (41) of the partition (4). The water inlet valve (121), the water outlet valve (131) and the water passing valve (411) are communicatively connected to the control terminal (3).

2. The compressed air drainage oil-water separation device according to claim 1, characterized in that: A pressure sensor (14) is arranged on the bottom wall of the separation chamber (11). The pressure sensor (14) is used to obtain the pressure signal received by the bottom wall of the separation chamber (11) and send the pressure signal to the control terminal (3). A first driving member (15) is arranged in the separation chamber (11). The first driving member (15) is used to drive the oil-absorbing cotton (2) to slide relative to the separation chamber (11), and the first driving member (15) is communicatively connected to the control terminal (3).

3. The compressed air drainage oil-water separation device according to claim 2, characterized in that: The oil-absorbing cotton (2) includes a frame body (21) and an oil-absorbing cotton body (22). The frame body (21) is arranged around the circumference of the oil-absorbing cotton body (22), and the frame body (21) is used to be attached to the wall of the separation chamber (11).

4. The compressed air drainage oil-water separation device according to claim 3, characterized in that: Limit strips (211) are arranged on both the upper and lower sides of the frame body (21), and the two limit strips (211) are respectively used to abut against the upper surface and the lower surface of the oil-absorbing cotton body (22).

5. A compressed air drainage oil-water separation device according to claim 3 or 4, characterized in that: Rolling shafts (23) are rotatably connected to the surface of the frame body (21) that is used to contact the wall of the separation chamber (11), and the rotation axis of the rolling shafts (23) is in the horizontal direction.

6. The compressed air draining oil-water separation device according to claim 3, wherein: The oil-absorbing cotton body (22) is detachably connected to the frame body (21).

7. The compressed air drainage oil-water separation device according to claim 3, characterized in that: The output end of the first driving member (15) is connected with a mounting seat (24), and the mounting seat (24) is used for connecting the frame body (21); a second driving member (25) is arranged on the mounting seat (24), the output shaft of the second driving member (25) is connected to the frame body (21), and the oil-absorbing cotton (2) is symmetrically arranged with the output shaft of the second driving member (25) as the axis; the second driving member (25) is used for driving the oil-absorbing cotton (2) to flip.

8. A compressed air drainage oil-water separation device according to claim 7, characterized in that: The oil-absorbing cotton body (22) is provided with two layers, and an oil storage cotton body (26) is arranged between the two layers of the oil-absorbing cotton body (22).

9. The compressed air drainage oil-water separation device according to claim 8, characterized in that: A first oil separation film (221) is arranged on the surface of the oil-absorbing cotton body (22) close to the oil storage cotton body (26), and a plurality of first oil through holes (222) are formed through the first oil separation film (221); a second oil separation film (261) is covered outside the oil storage cotton body (26), and a plurality of second oil through holes (262) are formed through the second oil separation film (261); a communication oil pipe (263) is arranged between the first oil separation film (221) and the second oil separation film (261), and two ends of the communication oil pipe (263) are respectively communicated with the relatively arranged first oil through hole (222) and the second oil through hole (262).

10. A compressed air drainage oil-water separation device according to claim 9, characterized in that: The communication oil pipe (263) is an elastic hose; a first pressure plate (27) and a second pressure plate (28) are arranged between the oil storage cotton body (26) and the oil-absorbing cotton body (22), and the second pressure plate (28) is located between the first pressure plate (27) and the oil-absorbing cotton body (22); the first pressure plate (27) and the second pressure plate (28) are both slidably connected to the frame body (21) along the thickness direction of the frame body (21), and there is a gap between the first pressure plate (27) and the second pressure plate (28); the frame body (21) is provided with a third driving member (214), the third driving member (214) is communicatively connected to the control terminal (3), and the third driving member (214) is used for driving the second pressure plate (28) to move relative to the frame body (21); a plurality of first through holes (271) for the communication oil pipe (263) to pass through are formed through the first pressure plate (27), and the aperture of the first through hole (271) is the same as the outer diameter of the communication oil pipe (263); a plurality of second through holes (281) for the communication oil pipe (263) to pass through are formed through the second pressure plate (28), and the aperture of the second through hole (281) is the same as the outer diameter of the communication oil pipe (263); the plurality of first through holes (271) and the plurality of second through holes (281) are arranged staggeredly; an oil outlet hole is formed in the second oil separation film (261), an oil outlet pipe is arranged on the second oil separation film (261), one end of the oil outlet pipe is communicated with the oil outlet hole, and the other end is externally connected to an oil storage device.

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