Oil-liquid separation and purification equipment for oil-containing industrial wastewater treatment

Abstract

The invention relates to the field of wastewater purification, in particular to oil-liquid separation and purification equipment for oil-containing industrial wastewater treatment, which comprises a collection unit arranged in a sewage pool and used for collecting oil liquid, the oil liquid is gathered at the bottom of the collection unit, and a suction unit communicated with the bottom of the collection unit is arranged below the sewage pool. The suction unit comprises a suction shell fixedly arranged on the lower portion of the sewage pool, the suction shell is of a circular shell structure, the axis of the suction shell is parallel to the horizontal plane, a feeding port and a discharging port are formed in the upper portion and the lower portion of the suction shell in the vertical direction respectively, and a rotating ring is rotationally arranged in the suction shell around the axis of the suction shell. The axis of the rotating ring and the axis of the suction shell are collinear, a suction groove is formed in the circumferential wall of the rotating ring in the radial direction of the rotating ring, and a sliding block is arranged in the suction groove in the extending direction of the suction groove in a sliding mode. According to the invention, the oil liquid is prevented from blocking the suction unit for sucking the oil liquid, and the separated oil liquid can be smoothly discharged.

Description

Technical Field

[0001] The invention relates to the field of wastewater purification, and in particular to an oil-liquid separation and purification device for treating oil-containing industrial wastewater. Background Art

[0002] Existing wastewater treatment devices use magnetic adsorbers to absorb and recover metals in industrial wastewater. However, when this method works for a long time, a thick layer of metal is adsorbed on the surface of the magnetic adsorber, which weakens the magnetic adsorber's adsorption of subsequent metals and causes the metals to be discharged with the flow of wastewater.

[0003] Chinese patent CN118125574B discloses an industrial wastewater purification device with oil-liquid separation function, including an outer frame; a collecting frame 1, a drain pipe 1, a magnetic absorber, a connecting plate 1, a motor, a scraper, a push rod, a drain pipe 2, a guide unit and an adjustment unit; the bottom of the outer frame is fixedly connected to and connected with the collecting frame 1, and a water inlet is provided on the left side of the outer frame; the bottom of the collecting frame 1 is fixedly connected to and connected with the drain pipe 1; the inside of the collecting frame 1 is fixedly connected to the magnetic absorber, and the top of the magnetic absorber contacts the top of the inner part of the outer frame; the outer frame is rotatably connected to the connecting plate 1; the outer frame is fixedly connected to the motor, and the motor is located directly above the connecting plate 1, and the connecting plate 1 is connected to the rotating part of the motor; the connecting plate 1 is connected to a plurality of push rods, and the tops of all the push rods are higher than the surface of the connecting plate 1; each push rod is fixedly connected to a plurality of scrapers, and all the scrapers are in contact with the surface of the magnetic absorber; the outer frame is fixedly connected to and connected with the drain pipe 2; the connecting plate 1 is connected to a guide unit for guiding water flow; the connecting plate 1 is connected to an adjustment unit for adjusting the rotation angle of the guide unit.

[0004] Although the above scheme ensures the adsorption effect of the magnetic adsorber, the main difficulty is still in oil-liquid separation. In the prior art, when separating oil and liquid, the oil floating on the upper layer is often sucked out or fished out by taking advantage of the lightness of the oil, but the separation method of fishing is inefficient and it is easy to fish out the wastewater under the oil. In order to improve efficiency, the method of sucking out the oil can also be used, but because the oil has a certain viscosity, when the suction method is used, it is easy for the oil to block the oil suction pipeline, and the subsequent pipeline cleaning is more cumbersome. If a heater is used to heat the oil suction pipeline for a long time, the energy consumption is high. Summary of the invention

[0005] In view of the above problems, an oil separation and purification equipment for treating oil-containing industrial wastewater is provided. By arranging a sliding block in the absorption tank, the sliding block can scrape off the residual oil in the absorption tank during the sliding process, thereby ensuring that the absorption unit can work stably for a long time and will not be blocked by oil.

[0006] In order to solve the problems of the prior art, the present invention provides an oil-liquid separation and purification device for treating oil-containing industrial wastewater, the purification device is arranged in a sewage pool; it comprises a collecting unit arranged in the sewage pool for collecting oil, the oil gathers at the bottom of the collecting unit, a suction unit connected with the bottom of the collecting unit is arranged below the sewage pool, the suction unit comprises a suction shell fixedly arranged at the lower part of the sewage pool, the suction shell is a circular shell structure, the axis of the suction shell is parallel to the horizontal plane, a feed port and a discharge port are respectively arranged at the upper part and the lower part of the suction shell in the vertical direction, a rotating ring is arranged inside the suction shell to rotate around the axis of the suction shell, the axis of the rotating ring is colinear with the axis of the suction shell, a suction groove is opened on the peripheral wall of the rotating ring along the radial direction of the rotating ring, a plurality of suction grooves are opened and evenly distributed around the axis of the rotating ring, a sliding block is slidably arranged in the suction groove along the extension direction of the suction groove, the end of the sliding block and the peripheral wall of the suction groove form an oil storage cavity, the volume of the oil storage cavity is maximum when it is connected with the feed port, and the volume of the oil storage cavity is minimum when it is connected with the discharge port.

[0007] Preferably, a groove is provided at one end of the sliding block away from the center of the rotating ring along the moving direction of the sliding block, a sliding plate is slidably arranged in the groove along the extension direction of the groove, a gap exists between the sliding plate and the bottom of the groove, a spring is arranged in the gap along the moving direction of the sliding plate, and both ends of the spring are fixedly connected to the bottom of the groove and the sliding plate respectively.

[0008] Preferably, a support shaft is arranged on one side of the inner ring of the rotating ring in parallel with the axial direction of the rotating ring, the axis of the support shaft is located below the axis of the rotating ring in the vertical direction, a ring that rotates around the axis of the support shaft is arranged on the outer periphery of the support shaft, and a plurality of connecting rods are distributed around the axis of the ring on the outer periphery of the ring, the connecting rods correspond to the sliding blocks one by one, and the two ends of each connecting rod are respectively hinged to the corresponding sliding block and the peripheral wall of the ring.

[0009] Preferably, a first driving unit for driving the rotating ring to rotate is provided at the end of the rotating ring, the first driving unit includes a first gear ring fixedly provided at the end of the rotating ring along the axis of the rotating ring, a first gear is meshed on one side of the first gear ring, and a rotating driver for driving the first gear to rotate is provided at the end of the first gear.

[0010] Preferably, the collecting unit includes a lifting sleeve which reciprocates in the vertical direction, a supporting sleeve is arranged at the lower part of the lifting sleeve along the axis of the lifting sleeve, the bottom opening of the supporting sleeve is smaller than the upper opening of the supporting sleeve, the bottom opening of the supporting sleeve is connected with the suction unit, the lifting sleeve is arranged on the periphery of the supporting sleeve, and slides with the supporting sleeve in the vertical direction, and a second driving unit for driving the lifting sleeve to move is arranged on the supporting sleeve.

[0011] Preferably, the second driving unit includes a driving shell arranged on the periphery of the lifting sleeve, the driving shell is an annular structure, the bottom of the driving shell is fixedly connected to the side wall of the supporting sleeve, an input end and an output end are arranged on the driving shell, a driving liquid is arranged in the driving shell, the driving liquid flows from the input end to the output end, a driving blade is arranged in the driving shell to rotate around the axis of the driving shell, the driving blade is an annular structure, a driving ring is fixedly arranged on the inner ring side wall of the driving blade, a guide groove which periodically undulates up and down is arranged on the inner ring side wall of the driving ring, and the side wall of the lifting sleeve extends into the guide groove and slidably cooperates with the guide groove.

[0012] Preferably, a plurality of extension plates are vertically fixedly provided at the bottom of the lifting sleeve, the extension plates are evenly arranged around the axis of the lifting sleeve, the connection between the extension plates, the second driving unit and the support sleeve slides in the vertical direction, and the extension plates can only move in the vertical direction.

[0013] Preferably, a second gear ring is fixedly provided at the bottom of the driving ring along the axis of the driving ring, a second gear is meshed on one side of the second gear ring, a stirring frame is vertically provided in the supporting sleeve, the axis of the stirring frame is colinear with the axis of the supporting sleeve, the stirring frame rotates around its own axis, a transmission assembly is provided between the stirring frame and the second gear, and the second gear drives the stirring frame to rotate through the transmission assembly.

[0014] Preferably, a blowing shell is provided at the connection between the support sleeve and the suction unit, and an air pump for supplying air to the blowing shell is provided at one end of the blowing shell. The air pump discharges air on one side of the suction unit into the blowing shell, and the blowing shell is communicated with the support sleeve.

[0015] Preferably, a water level monitor for monitoring the water level under the oil in the sewage pool is vertically arranged on the side of the sewage pool, and a float is arranged at the bottom of the water level monitor, and the density of the float is greater than the density of the oil and less than the density of water.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When oil absorption is required, the rotating ring rotates, and the absorption groove set on the rotating ring rotates synchronously with the rotating ring. While the rotating ring rotates, the sliding block sliding in the absorption groove slides synchronously along the extension direction of the absorption groove. When the rotating ring drives the absorption groove to rotate to a vertical upward state, the sliding block is located at the end of the absorption groove close to the center of the rotating ring. At this time, the oil storage cavity formed by the end of the sliding block and the side wall of the absorption groove has the largest volume, and the oil storage cavity is connected to the collection unit at this time, so that the oil in the collection unit can flow into the oil storage cavity. As the rotating ring rotates, the rotating ring drives the absorption groove from a vertical upward state to a vertical downward state. When the absorption groove is in a vertical downward state, the sliding block moves to the end of the absorption groove away from the center of the rotating ring. At this time, the squeezed oil in the oil storage cavity is discharged from the discharge port. Then the rotating ring continues to rotate, and the sliding block located in the absorption groove moves from the end of the absorption groove away from the center of the rotating ring toward the end of the absorption groove close to the center of the rotating ring, and the cycle repeats. In this way, when the oil is sucked, the sliding block sliding in the suction groove can scrape off the oil remaining on the side wall of the suction groove, avoiding the situation where the oil storage cavity formed by the sliding block and the suction groove is blocked by the oil.

[0018] 2. By opening a groove at the end of the sliding block and arranging a spring and a sliding plate in the groove, high pressure can be avoided in the oil storage chamber. After the oil storage chamber is squeezed, the greater pressure in the oil storage chamber will further squeeze the sliding plate, causing the spring in the groove to be compressed, and the oil in the oil storage chamber to flow into the groove on the side of the sliding plate away from the spring, thereby avoiding the sliding block being blocked by the oil due to excessive squeezing of the oil and becoming unable to move, thereby ensuring that the structure of the sliding block and the absorption groove will not be damaged due to high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of an oil-liquid separation and purification device for treating oil-containing industrial wastewater of the present invention when it is arranged in a sewage pool.

[0020] Figure 2 The invention relates to an oil-liquid separation and purification device for treating oil-containing industrial wastewater. Figure 1 A local enlarged schematic diagram of point A in the middle.

[0021] Figure 3 It is a partial three-dimensional schematic diagram of an oil-liquid separation and purification device for treating oil-containing industrial wastewater according to the present invention when it is arranged in a sewage pool.

[0022] Figure 4 The invention relates to an oil-liquid separation and purification device for treating oil-containing industrial wastewater. Figure 3 A local enlarged schematic diagram of point B in the middle.

[0023] Figure 5It is a partial side view of an oil-liquid separation and purification device for treating oil-containing industrial wastewater according to the present invention when it is arranged in a sewage pool.

[0024] Figure 6 The invention relates to an oil-liquid separation and purification device for treating oil-containing industrial wastewater. Figure 5 Schematic cross-sectional view at CC in the middle.

[0025] Figure 7 A partially cutaway perspective view of an oil-liquid separation and purification device for treating oily industrial wastewater according to the present invention when it is set in a sewage pool Figure 1 .

[0026] Figure 8 The invention relates to an oil-liquid separation and purification device for treating oil-containing industrial wastewater. Figure 7 A partial enlarged schematic diagram of point D in the middle.

[0027] Fig. 9 The invention relates to an oil-liquid separation and purification device for treating oil-containing industrial wastewater. Figure 7 A partial enlarged schematic diagram of point E in the middle.

[0028] Fig.10 It is a three-dimensional schematic diagram of an oil-liquid separation and purification device for treating oil-containing industrial wastewater according to the present invention.

[0029] Fig.11 It is a three-dimensional schematic diagram of an oil-liquid separation and purification device for treating oil-containing industrial wastewater of the present invention with the lifting sleeve and the stirring frame removed.

[0030] Fig.12 A partially cutaway perspective view of an oil-liquid separation and purification device for treating oily industrial wastewater according to the present invention when it is set in a sewage pool Figure 2 .

[0031] The numbers in the figure are:

[0032] 1. Sewage pool; 11. Water level monitor; 111. Float; 2. Collection unit; 21. Lifting sleeve; 211. Extension plate; 22. Second drive unit; 221. Drive housing; 222. Drive blade; 223. Drive ring; 2231. Guide groove; 224. Circulation pipe; 225. Water pump; 23. Support sleeve; 24. Second gear ring; 25. Second gear; 26. Transmission assembly; 261. Universal joint coupling; 262. Synchronous ring ; 263, synchronous wheel; 264, synchronous belt; 27, stirring frame; 28, blowing shell; 281, air pump; 3, suction unit; 31, rotating ring; 32, suction groove; 33, sliding block; 331, groove; 332, sliding plate; 333, spring; 34, suction shell; 35, supporting shaft; 36, sleeve ring; 37, connecting rod; 38, first driving unit; 381, first gear ring; 382, ​​first gear; 383, rotary drive. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Reference Figure 1-Figure 4 and Fig. 9 : An oil-liquid separation and purification device for treating oil-containing industrial wastewater, the purification device is arranged in a sewage pool 1; it includes a collecting unit 2 arranged in the sewage pool 1 for collecting oil, the oil gathers at the bottom of the collecting unit 2, a suction unit 3 connected to the bottom of the collecting unit 2 is arranged below the sewage pool 1, the suction unit 3 includes a suction shell 34 fixedly arranged at the lower part of the sewage pool 1, the suction shell 34 is a circular shell structure, the axis of the suction shell 34 is parallel to the horizontal plane, the upper and lower parts of the suction shell 34 are respectively provided with a feed port and a discharge port in the vertical direction, and the suction shell 34 is provided with a suction port. A rotating ring 31 is arranged inside the extraction shell 34 to rotate around the axis of the suction shell 34. The axis of the rotating ring 31 is colinear with the axis of the suction shell 34. A suction groove 32 is provided on the peripheral wall of the rotating ring 31 along the radial direction of the rotating ring 31. There are multiple suction grooves 32 and they are evenly distributed around the axis of the rotating ring 31. A sliding block 33 is slidably arranged in the suction groove 32 along the extension direction of the suction groove 32. The end of the sliding block 33 and the peripheral wall of the suction groove 32 form an oil storage cavity. The volume of the oil storage cavity is maximum when it is connected to the feed port, and the volume is minimum when the oil storage cavity is connected to the discharge port.

[0035] In traditional oil-liquid separation equipment, oil-containing industrial wastewater is usually injected into the oil-liquid separation equipment, and then the wastewater is allowed to stand. Since the separation equipment has a large volume, the wastewater can still be continuously injected into the oil-liquid separation equipment during the standing process. The oil separated by standing floats on the upper side of the oil-liquid separation equipment, while the water is located below the oil. The sludge and other sediments in the wastewater are located at the bottom of the oil-liquid separation equipment. The oil separation equipment is provided with three discharge ports corresponding to the three states of wastewater compositions. When the oil is discharged, a sufficient amount of water is required at the bottom of the oil to support the oil, so as to ensure that the upper discharge port of the oil separation equipment can discharge the oil smoothly. The oil after standing separation will gather at the upper part of the oil-liquid separation equipment. When the external environment temperature is low, the oil will block the upper discharge port. At the same time, the existing pump body for oil extraction will block the pump body with oil after long-term use.

[0036] In order to avoid the above situation, the oil-liquid separation and purification equipment is redesigned and directly set in the sewage pool 1. Taking advantage of the large area of ​​the sewage pool 1, the oil-containing wastewater can be separated more quickly and collected by the collection unit 2. The collection process of the upper oil of the wastewater by the collection unit 2 will be discussed later. The following will first discuss the suction unit 3 below the collection unit 2. The specific structure and working principle of the suction unit 3 are as follows:

[0037] A suction shell 34 is provided below the sewage pool 1 and is interconnected with the bottom of the collection unit 2. The collection unit 2 and the suction unit 3 operate synchronously. After the collection unit 2 introduces the oil floating on the upper layer of the sewage pool 1 into the collection, the rotating ring 31 provided inside the suction shell 34 is in a continuous rotation state. A plurality of suction grooves 32 are provided on the peripheral wall of the rotating ring 31. When the rotating ring 31 rotates, the suction grooves 32 provided on the rotating ring 31 rotate synchronously with the rotating ring 31. When the rotating ring 31 rotates, the sliding block 33 sliding in the suction groove 32 synchronously moves along the suction groove 32. The sliding block 33 slides in the extension direction of the groove 32, and the movement process of the sliding block 33 is roughly as follows. For ease of understanding, the following description is made with one of the suction grooves 32 and the sliding block 33 arranged in the suction groove 32 as reference objects. When the rotating ring 31 drives the suction groove 32 to rotate to a vertical upward state, the sliding block 33 is located at one end of the suction groove 32 close to the center of the rotating ring 31. At this time, the oil storage chamber formed by the end of the sliding block 33 and the side wall of the suction groove 32 has the largest volume, and the oil storage chamber is connected to the collecting unit 2 at this time, so that the oil in the collecting unit 2 can flow into the oil storage chamber. As the rotating ring 31 rotates, the rotating ring 31 drives the suction groove 32 from a vertically upward state to a vertically downward state. During this process, the sliding block 33 located in the suction groove 32 moves in a direction away from the center of the rotating ring 31, so that the oil storage cavity is squeezed. When the suction groove 32 is in a vertically downward state, the sliding block 33 moves to the end of the suction groove 32 away from the center of the rotating ring 31, and the squeezed oil in the oil storage cavity is discharged from the discharge port. Then the rotating ring 31 continues to rotate, and the sliding block 33 located in the suction groove 32 moves from the end of the suction groove 32 away from the center of the rotating ring 31 toward the end of the suction groove 32 close to the center of the rotating ring 31, and the cycle repeats. In this way, when the oil is sucked, the sliding block 33 sliding in the suction groove 32 can scrape off the oil remaining on the side wall of the suction groove 32, avoiding the situation where the oil storage cavity formed by the sliding block 33 and the suction groove 32 is blocked by oil.

[0038] Reference Fig. 9A groove 331 is provided at one end of the sliding block 33 away from the center of the rotating ring 31 along the moving direction of the sliding block 33, a sliding plate 332 is slidably provided in the groove 331 along the extending direction of the groove 331, a gap exists between the sliding plate 332 and the bottom of the groove 331, a spring 333 is provided in the gap along the moving direction of the sliding plate 332, and both ends of the spring 333 are fixedly connected to the bottom of the groove 331 and the sliding plate 332 respectively.

[0039] When the rotating ring 31 drives the suction groove 32 to rotate from a vertically upward state to a vertically downward state, the volume of the oil storage chamber will decrease, which causes the pressure in the oil storage chamber to gradually increase. In order to ensure that the sliding block 33 can slide normally in the oil suction groove, a groove 331 is provided at the end of the sliding block 33. When the pressure in the oil storage chamber increases, the sliding plate 332 can squeeze the spring 333, thereby reducing the pressure in the oil storage chamber, ensuring that the sliding block 33 can slide normally in the suction groove 32, and also ensuring that the sliding block 33 and the suction groove 32 will not be damaged due to excessive pressure.

[0040] Reference Figure 6 , Fig. 9 and Fig.11 A support shaft 35 is arranged on one side of the inner ring of the rotating ring 31 in parallel with the axial direction of the rotating ring 31. The axis of the support shaft 35 is located below the axis of the rotating ring 31 in the vertical direction. A collar 36 that rotates around the axis of the support shaft 35 is sleeved on the outer periphery of the support shaft 35. A plurality of connecting rods 37 are distributed around the axis of the collar 36 on the outer periphery of the collar 36. The connecting rods 37 correspond to the sliding blocks 33 one by one. The two ends of each connecting rod 37 are respectively hinged to the corresponding sliding block 33 and the peripheral wall of the collar 36.

[0041] Since the axis of the support shaft 35 is lower than the axis of the rotating ring 31 in the vertical direction, and all the connecting rods 37 are of equal length, during the rotation of the rotating ring 31, when the suction groove 32 is vertically upward, the volume of the oil storage chamber is the largest, and when the suction groove 32 is vertically downward, the volume of the oil storage chamber is the smallest.

[0042] Reference Figure 5 , Fig.10 and Fig.11 : A first driving unit 38 for driving the rotating ring 31 to rotate is provided at the end of the rotating ring 31. The first driving unit 38 includes a first gear ring 381 fixedly provided at the end of the rotating ring 31 along the axis of the rotating ring 31. A first gear 382 is meshed on one side of the first gear ring 381. A rotation driver 383 for driving the first gear 382 to rotate is provided at the end of the first gear 382.

[0043] The rotary driver 383 is preferably a servo motor. When the collecting unit 2 starts to collect oil, the rotary driver 383 drives the first gear ring 381 to rotate through the first gear 382, ​​thereby rotating the rotating ring 31 to achieve the effect of oil absorption.

[0044] Reference Figure 5 and Figure 6 The collecting unit 2 includes a lifting sleeve 21 which reciprocates in the vertical direction, a supporting sleeve 23 is arranged at the lower part of the lifting sleeve 21 along the axis of the lifting sleeve 21, the bottom opening of the supporting sleeve 23 is smaller than the upper opening of the supporting sleeve 23, the bottom opening of the supporting sleeve 23 is connected with the suction unit 3, the lifting sleeve 21 is sleeved on the periphery of the supporting sleeve 23, and slides with the supporting sleeve 23 in the vertical direction, and a second driving unit 22 for driving the lifting sleeve 21 to move is arranged on the supporting sleeve 23.

[0045] Reference Fig.11 and Fig.12 The second driving unit 22 includes a driving shell 221 which is sleeved on the periphery of the lifting sleeve 21. The driving shell 221 is an annular structure. The bottom of the driving shell 221 is fixedly connected to the side wall of the support sleeve 23. The driving shell 221 is provided with an input end and an output end. A driving liquid is provided in the driving shell 221. The driving liquid flows from the input end to the output end. A driving blade 222 is provided in the driving shell 221 to rotate around the axis of the driving shell 221. The driving blade 222 is an annular structure. A driving ring 223 is fixedly provided on the inner ring side wall of the driving blade 222. A guide groove 2231 which periodically undulates up and down is provided on the inner ring side wall of the driving ring 223. The side wall of the lifting sleeve 21 extends into the guide groove 2231 and slidably cooperates with the guide groove 2231.

[0046] A circulation pipe 224 is provided on one side of the driving shell 221. The circulation pipe 224 contains driving liquid, and the driving liquid is preferably hydraulic oil. The two ends of the circulation pipe 224 are respectively connected to the input end and the output end of the driving shell 221. A water pump 225 is provided on the circulation pipe 224. The water pump 225 is used to drive the driving liquid in the circulation pipe 224 to flow, so that the driving blades 222 in the driving shell 221 can be driven to rotate. The driving ring 223 fixedly connected to the driving blades 222 guides the lifting sleeve 21 through the guide groove 2231, so that when the driving ring 223 rotates, the lifting sleeve 21 can be lifted and lowered reciprocatingly in the vertical direction. In the process of reciprocating lifting, the lifting sleeve 21 can suck in the oil floating on the upper layer of the sewage pool 1 and discharge it into the bottom of the support sleeve 23 for collection and storage.

[0047] Reference Fig.10: A plurality of extension plates 211 are vertically fixedly arranged at the bottom of the lifting sleeve 21. The extension plates 211 are evenly arranged around the axis of the lifting sleeve 21. The connection between the extension plates 211 and the second driving unit 22 and the support sleeve 23 slides in the vertical direction, and the extension plates 211 can only move in the vertical direction.

[0048] This ensures that when the driving ring 223 rotates, the lifting sleeve 21 will not rotate around the axis of the driving ring 223 at the same time, thereby ensuring that the lifting sleeve 21 can stably reciprocate in the vertical direction.

[0049] Reference Figure 6-Figure 8 : A second gear ring 24 is fixedly arranged at the bottom of the driving ring 223 along the axis of the driving ring 223, and a second gear 25 is meshed with one side of the second gear ring 24. A stirring frame 27 is vertically arranged in the supporting sleeve 23, and the axis of the stirring frame 27 is colinear with the axis of the supporting sleeve 23. The stirring frame 27 rotates around its own axis. A transmission assembly 26 is arranged between the stirring frame 27 and the second gear 25, and the second gear 25 drives the stirring frame 27 to rotate through the transmission assembly 26.

[0050] A synchronous ring 262 is arranged on the lower side of the support sleeve 23, and the inner ring section of the synchronous ring 262 completely overlaps with the projection of the inner ring section of the support sleeve 23 in the vertical direction. The synchronous ring 262 is fixedly connected to the stirring frame 27, and a synchronous wheel 263 is arranged on one side of the synchronous ring 262. A synchronous belt 264 is arranged on the outer sleeve of the synchronous wheel 263 and the synchronous ring 262. The synchronous belt 264 is respectively matched with the synchronous ring 262 and the synchronous wheel 263 for transmission. A universal joint coupling 261 is arranged between the synchronous wheel 263 and the second gear 25, so that when the second gear 25 rotates, the stirring frame 27 can also be driven synchronously, so that the stirring frame 27 can continue to rotate during the lifting and lowering process of the lifting sleeve 21, so as to avoid the oil accumulated in the support sleeve 23 from clogging the support sleeve 23.

[0051] Reference Figure 4 and Fig.11 : A blowing shell 28 is arranged at the connection between the support sleeve 23 and the suction unit 3, and an air pump 281 for supplying air to the blowing shell 28 is arranged at one end of the blowing shell 28. The air pump 281 discharges the air on one side of the suction unit 3 into the blowing shell 28, and the blowing shell 28 is communicated with the support sleeve 23.

[0052] Since the suction unit 3 includes a continuously running rotating driver 383, and the water pump 225 is also located on one side of the suction unit 3, the air temperature around the suction unit 3 is relatively high. The air with relatively high temperature is discharged into the support sleeve 23 through the blowing shell 28 by the air pump 281, thereby heating the oil in the support sleeve 23 and avoiding condensation of the oil accumulated in the support sleeve 23.

[0053] Reference Figure 2A water level monitor 11 is vertically arranged on the side of the sewage pool 1 to monitor the water level height under the oil in the sewage pool 1. A float 111 is arranged at the bottom of the water level monitor 11. The density of the float 111 is greater than the density of the oil and less than the density of water.

[0054] In this way, when treating oily industrial wastewater, it is possible to accurately monitor the water level below the oil. Since the lifting sleeve 21 in the collection unit 2 reciprocates in the vertical direction, if you want to prevent the water in the oily industrial wastewater from flowing into the lifting sleeve 21 along with the oil floating on the upper layer, you need to accurately monitor the water level below the oil. In actual use, you only need to ensure that the lowest position of the lifting sleeve 21 during lifting is greater than or equal to the height of the water level below the oil. At the same time, when the water level in the sewage pool 1 is low, it is necessary to promptly inject water into the sewage pool 1. The optimal ideal solution is to make the water level below the oil in the sewage pool 1 the same as the height when the lifting sleeve 21 drops to the lowest position.

[0055] Working principle: After the collecting unit 2 introduces the oil floating on the upper layer of the sewage pool 1 into the supporting sleeve 23 for collection through the reciprocating lifting sleeve 21, the rotating ring 31 arranged inside the suction shell 34 is in a continuous rotation state, and a plurality of suction grooves 32 are arranged on the peripheral wall of the rotating ring 31. When the rotating ring 31 rotates, the suction grooves 32 arranged on the rotating ring 31 rotate synchronously with the rotating ring 31. While the rotating ring 31 rotates, the sliding block 33 slidingly arranged in the suction groove 32 slides synchronously along the extension direction of the suction groove 32. When the rotating ring 31 drives the suction groove 32 to rotate to a vertical upward state, the sliding block 33 is located at one end of the suction groove 32 close to the center of the rotating ring 31. At this time, the oil storage cavity formed by the end of the sliding block 33 and the side wall of the suction groove 32 has the largest volume, and the oil storage cavity is connected with the collecting unit 2 at this time, so that the oil in the collecting unit 2 can flow into the oil storage cavity. As the rotating ring 31 rotates, the rotating ring 31 drives the suction groove 32 from the vertical upward state to the vertical downward state. During this process, the sliding block 33 located in the suction groove 32 moves in the direction away from the center of the rotating ring 31, so that the oil storage chamber is squeezed. The greater pressure in the oil storage chamber will further squeeze the sliding plate 332, so that the spring 333 in the groove 331 is compressed, and the oil in the oil storage chamber flows into the groove 331 on the side of the sliding plate 332 away from the spring 333, thereby avoiding the situation where the sliding block 33 is blocked by the oil due to excessive squeezing of the oil and cannot move, and ensuring that the structure of the sliding block 33 and the suction groove 32 will not be damaged due to high pressure. When the suction groove 32 is in the vertical downward state, the sliding block 33 moves to the end of the suction groove 32 away from the center of the rotating ring 31, and the squeezed oil in the oil storage chamber is discharged from the discharge port. Then the rotating ring 31 continues to rotate, and the sliding block 33 located in the suction groove 32 moves from the end of the suction groove 32 away from the center of the rotating ring 31 toward the end of the suction groove 32 close to the center of the rotating ring 31, and the cycle repeats.

[0056] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An oil-liquid separation and purification device for treating oily industrial wastewater, the purification device being arranged in a sewage tank (1); It is characterized in that The invention comprises a collecting unit (2) arranged in a sewage pool (1) for collecting oil, the oil is collected at the bottom of the collecting unit (2), a suction unit (3) is arranged below the sewage pool (1) and is connected to the bottom of the collecting unit (2), the suction unit (3) comprises a suction shell (34) fixedly arranged at the bottom of the sewage pool (1), the suction shell (34) is a circular shell structure, the axis of the suction shell (34) is parallel to the horizontal plane, a feed inlet and a discharge outlet are respectively arranged at the upper and lower parts of the suction shell (34) in the vertical direction, and a suction shell (34) is arranged around the axis of the suction shell (34) inside the suction shell (34). A rotating ring (31) is provided for linear rotation. The axis of the rotating ring (31) is colinear with the axis of the suction shell (34). A suction groove (32) is provided on the peripheral wall of the rotating ring (31) along the radial direction of the rotating ring (31). A plurality of suction grooves (32) are provided and are evenly distributed around the axis of the rotating ring (31). A sliding block (33) is provided in the suction groove (32) to slide along the extension direction of the suction groove (32). The end of the sliding block (33) and the peripheral wall of the suction groove (32) form an oil storage cavity. The volume of the oil storage cavity is maximum when it is connected to the feed port, and the volume is minimum when it is connected to the discharge port.

2. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 1, characterized in that: A groove (331) is provided at one end of the sliding block (33) away from the center of the rotating ring (31) along the moving direction of the sliding block (33); a sliding plate (332) is slidably arranged in the groove (331) along the extending direction of the groove (331); a gap exists between the sliding plate (332) and the bottom of the groove (331); a spring (333) is arranged in the gap along the moving direction of the sliding plate (332); two ends of the spring (333) are fixedly connected to the bottom of the groove (331) and the sliding plate (332) respectively.

3. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 1, characterized in that: A support shaft (35) is arranged on one side of the inner ring of the rotating ring (31) in parallel with the axial direction of the rotating ring (31), the axis of the support shaft (35) is located below the axis of the rotating ring (31) in the vertical direction, a collar (36) is sleeved on the outer periphery of the support shaft (35) and rotates around the axis of the support shaft (35), and a plurality of connecting rods (37) are distributed around the axis of the collar (36) on the outer periphery of the collar (36), the connecting rods (37) correspond to the sliding blocks (33) one by one, and the two ends of each connecting rod (37) are respectively hinged to the corresponding sliding block (33) and the peripheral wall of the collar (36).

4. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 1, characterized in that: A first driving unit (38) for driving the rotating ring (31) to rotate is arranged at the end of the rotating ring (31), and the first driving unit (38) comprises a first gear ring (381) fixedly arranged at the end of the rotating ring (31) along the axis of the rotating ring (31), a first gear (382) meshing with one side of the first gear ring (381), and a rotation driver (383) for driving the first gear (382) to rotate is arranged at the end of the first gear (382).

5. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 1, characterized in that: The collecting unit (2) comprises a lifting sleeve (21) which reciprocates in a vertical direction, a supporting sleeve (23) is arranged at the lower part of the lifting sleeve (21) along the axis of the lifting sleeve (21), the bottom opening of the supporting sleeve (23) is smaller than the upper opening of the supporting sleeve (23), the bottom opening of the supporting sleeve (23) is connected to the suction unit (3), the lifting sleeve (21) is sleeved on the outer periphery of the supporting sleeve (23) and is slidably matched with the supporting sleeve (23) in the vertical direction, and a second driving unit (22) for driving the lifting sleeve (21) to move is arranged on the supporting sleeve (23).

6. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 5, characterized in that: The second driving unit (22) comprises a driving shell (221) sleeved on the outer periphery of the lifting sleeve (21); the driving shell (221) is an annular structure; the bottom of the driving shell (221) is fixedly connected to the side wall of the supporting sleeve (23); an input end and an output end are arranged on the driving shell (221); a driving liquid is arranged in the driving shell (221); the driving liquid flows from the input end to the output end; a driving blade (222) is arranged in the driving shell (221) to rotate around the axis of the driving shell (221); the driving blade (222) is an annular structure; a driving ring (223) is fixedly arranged on the inner ring side wall of the driving blade (222); a guide groove (2231) which periodically rises and falls is arranged on the inner ring side wall of the driving ring (223); the side wall of the lifting sleeve (21) extends into the guide groove (2231) and is slidably matched with the guide groove (2231).

7. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 5, characterized in that: A plurality of extension plates (211) are vertically fixedly arranged at the bottom of the lifting sleeve (21), the extension plates (211) are evenly arranged around the axis of the lifting sleeve (21), the connection between the extension plates (211) and the second drive unit (22) and the support sleeve (23) is slidably matched in the vertical direction, and the extension plates (211) can only move in the vertical direction.

8. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 6, characterized in that: A second gear ring (24) is fixedly arranged at the bottom of the driving ring (223) along the axis of the driving ring (223); a second gear (25) is meshed with one side of the second gear ring (24); a stirring frame (27) is vertically arranged in the support sleeve (23); the axis of the stirring frame (27) is colinear with the axis of the support sleeve (23); the stirring frame (27) rotates around its own axis; a transmission assembly (26) is arranged between the stirring frame (27) and the second gear (25); the second gear (25) drives the stirring frame (27) to rotate through the transmission assembly (26).

9. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 5, characterized in that: A blowing shell (28) is provided at the connection between the support sleeve (23) and the suction unit (3); an air pump (281) for supplying air to the blowing shell (28) is provided at one end of the blowing shell (28); the air pump (281) discharges air on one side of the suction unit (3) into the blowing shell (28); and the blowing shell (28) is communicated with the support sleeve (23).

10. The oil-liquid separation and purification equipment for treating oily industrial wastewater according to claim 1, characterized in that: A water level monitor (11) for monitoring the water level under the oil in the sewage pool (1) is vertically arranged on the side of the sewage pool (1), and a float (111) is arranged at the bottom of the water level monitor (11). The density of the float (111) is greater than the density of the oil and less than the density of water.

Images