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CN-122010233-A - Rotational flow oil removal treatment device and method for oily wastewater

CN122010233ACN 122010233 ACN122010233 ACN 122010233ACN-122010233-A

Abstract

The application relates to the technical field of wastewater treatment, and provides a rotational flow oil removal treatment device and method for oily wastewater, wherein the rotational flow oil removal treatment device comprises a rotational flow tank, a top cover, supporting feet, a drain pipe, a bearing seat, a central rod, rotational flow fan blades, a first driving component and a second driving component, wherein the central rod comprises a first rod and a second rod, the bearing seat is arranged at the bottom of the rotational flow tank, one end of the first rod is arranged in a hollow way, the other end of the first rod penetrates through the bearing seat, the other end of the first rod is positioned in the rotational flow tank, and the first driving component is connected with the first rod and is used for driving the first rod to rotate; the first rod is arranged on the cyclone tank, the second rod is movably arranged on the first rod, and the second driving assembly is connected with the second rod and used for driving the second rod to linearly move. The application has the effect of conveniently adjusting the position of the oil drain port.

Inventors

  • YU YANMING
  • GAO QINGGANG
  • Xiong Menghao
  • ZHANG YUKUN
  • Gao Xingqiao
  • ZHANG BO

Assignees

  • 北京昆仑洁能科技开发有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (9)

  1. 1. The cyclone oil removal treatment device for the oily wastewater is characterized by comprising a cyclone tank (1), a top cover (2), supporting legs (3), a drain pipe (4), a bearing seat (5), a center rod (6), cyclone blades (7), a first driving assembly (8) and a second driving assembly (9), wherein the top cover (2) is arranged at an opening of the cyclone tank (1), the supporting legs (3) are arranged at the bottom of the cyclone tank (1), and the drain pipe (4) is communicated with the cyclone tank (1) and is used for discharging wastewater into the cyclone tank (1); The center rod (6) is vertically arranged and is rotatably connected to the inside of the cyclone tank (1), the center rod (6) comprises a first rod (61) and a second rod (62), the bearing seat (5) is arranged at the bottom of the cyclone tank (1), the first rod (61) is arranged in a hollow mode, one end of the first rod (61) penetrates through the bearing seat (5), the other end of the first rod (61) is positioned in the inside of the cyclone tank (1), the first driving assembly (8) is connected with the first rod (61) and is used for driving the first rod (61) to rotate, and the cyclone fan blade (7) is arranged on the first rod (61) and is positioned in the cyclone tank (1); The second rod (62) and the first rod (61) are coaxially arranged and are positioned in the cyclone tank (1), the second rod (62) is movably arranged on the first rod (61), the second rod (62) is arranged in a hollow mode, an oil drain port (20) is formed in the side wall in a penetrating mode, cavities in the first rod (61) and the second rod (62) are used for discharging waste oil, and the second driving assembly (9) is connected with the second rod (62) and is used for driving the second rod (62) to linearly move.
  2. 2. The cyclone oil removal treatment device for oily wastewater according to claim 1, wherein the first driving assembly (8) is arranged outside the cyclone tank (1), the first driving assembly (8) comprises a first gear (81), a second gear (82) and a driving motor (83), the first gear (81) is arranged on an output shaft of the driving motor (83), and the second gear (82) is coaxially arranged on the first rod (61) and meshed with the first gear (81).
  3. 3. The cyclone oil removal treatment device for oily wastewater according to claim 1, wherein the second driving assembly (9) comprises a linear air cylinder (91) and a moving block (92), one end, far away from the first rod (61), of the second rod (62) is rotatably connected to the moving block (92) through a bearing, the linear air cylinder (91) is connected with the moving block (92) and used for controlling the moving block (92) to vertically move, a guide strip (10) is connected to the outer wall of the first rod (61), a guide groove is correspondingly formed in the inner wall of the second rod (62), and the guide strip (10) is located in the guide groove.
  4. 4. The rotational flow oil removal treatment device for oily wastewater according to claim 3, wherein a sealing ring (11) is further fixedly arranged on the outer wall of the first rod (61), the sealing ring (11) is positioned between the second rod (62) and the first rod (61), and a sealing shaft sleeve is arranged at the joint of the first rod (61) and the bearing seat (5).
  5. 5. The cyclone oil removal treatment device for oily wastewater according to claim 1, further comprising a drain pipe (19), wherein the drain pipe (19) is arranged at the bottom of the cyclone tank (1) and is communicated with the cyclone tank (1).
  6. 6. The cyclone oil removal treatment device for oily wastewater according to claim 1, further comprising a filter tank (12), a filter screen (16) and a liquid inlet pipe (13), wherein the filter tank (12) is positioned at one side of the cyclone tank (1), the filter screen (16) is arranged in the filter tank (12), the liquid inlet pipe (13) is communicated with the filter tank (12) and is positioned above the filter screen (16), and the sewage drain pipe (4) is positioned below the filter screen (16) and is communicated with the filter tank (12).
  7. 7. The cyclone oil removal treatment device for oily wastewater according to claim 6, further comprising a rotating shaft (14) and a third driving assembly (15), wherein the rotating shaft (14) is rotatably connected in the filtering tank (12), the filtering screen (16) is arranged on the rotating shaft (14), a discharging hole (17) is formed in the bottom of the filtering tank (12), a sealing plug (18) is arranged at the discharging hole (17) in a sealing mode, the third driving assembly (15) is connected with the rotating shaft (14) and the sealing plug (18) at the same time, and when the sealing plug (18) is separated from the discharging hole (17), the rotating shaft (14) rotates 180 degrees, so that the filtering screen (16) faces the discharging hole (17).
  8. 8. The cyclone oil removal treatment device for oily wastewater according to claim 7, wherein the third driving assembly (15) comprises a pneumatic cylinder (151), a rack (152) and a gear member (153), the rack (152) is vertically arranged, the pneumatic cylinder (151) is connected with the rack (152) and is used for driving the rack (152) to move up and down, the gear member (153) is coaxially arranged on the rotating shaft (14) and is positioned outside the filtering tank (12), the gear member (153) is meshed with the rack (152), the sealing plug (18) is connected with the rack (152), and the pneumatic cylinder (151) is provided with a stroke control mechanism.
  9. 9. A cyclone oil removal treatment method for oily wastewater, which adopts the cyclone oil removal treatment device as claimed in any one of claims 1 to 8 to treat wastewater, and is characterized by comprising the following steps: S1, enabling waste water to enter the cyclone tank (1) through a drain pipe (4), and then operating a first driving assembly (8) to drive the whole central rod (6) to rotate so as to drive the cyclone blades (7) to synchronously rotate; s2, after oil-water cyclone layering, the second driving assembly (9) is operated to control the second rod (62) to linearly move relative to the first rod (61), the position of the oil drain port (20) is changed, an upper oil stain layer enters the oil drain port (20), and then the oil is discharged from the second rod (62) and the inside of the first rod (61) so as to realize an oil discharge process.

Description

Rotational flow oil removal treatment device and method for oily wastewater Technical Field The application relates to the technical field of wastewater treatment, in particular to a cyclone oil removal treatment device and method for oily wastewater. Background The oil-containing wastewater can generate a large amount of oily wastewater in petrochemical industry, steel coal processing, mechanical processing, food processing and other industrial production and daily life of residents, the oil has serious influence on an ecological system, soil and water bodies, floatable oil flowing into the water bodies can cut off sources of water body oxygen after forming an oil film, the emulsified oil and the dissolved oil in the water consume dissolved oxygen in the water in the microbial decomposition process, so that the water bodies are lack of oxygen, fish and aquatic organisms cannot survive, and the oily wastewater enters the soil to form an oil film in the soil so as to prevent propagation of soil microorganisms and destroy soil layer aggregate structures. The cyclone oil-removing treatment device (also called as a hydrocyclone oil remover and a cyclone oil-water separator) is high-efficiency oil-water separation equipment designed based on centrifugal separation technology, is mainly used for removing non-emulsified oil and partial emulsified oil in oily wastewater, and is widely applied to oily wastewater treatment scenes in the fields of petrochemical industry, ferrous metallurgy, ships, machining and the like. In the actual operation process of the conventional cyclone oil removal treatment device, the upper-layer greasy dirt is removed by means of the characteristic of oil-water layering formed after wastewater is subjected to cyclone action. However, the oil drain port is generally fixed in the oil drain link, the position of the oil drain port cannot be properly adjusted according to the position of the oil-water interface, and the integral oil-water separation effect is easily affected, so that improvement is needed. Disclosure of Invention In order to conveniently adjust the position of the oil drain port and control the relative distance between the oil drain port and an oil-water phase interface, the application provides a rotational flow oil removal treatment device for oily wastewater. In a first aspect, the application provides a cyclone oil removal treatment device for oily wastewater, which adopts the following technical scheme: The cyclone oil removal treatment device for the oily wastewater comprises a cyclone tank, a top cover, supporting feet, a drain pipe, a bearing seat, a center rod, cyclone blades, a first driving assembly and a second driving assembly, wherein the top cover is arranged at an opening of the cyclone tank, and the supporting feet are arranged at the bottom of the cyclone tank; the center rod is vertically arranged and is rotatably connected to the interior of the cyclone tank, the center rod comprises a first rod and a second rod, the bearing seat is arranged at the bottom of the cyclone tank, the first rod is arranged in a hollow mode, one end of the first rod penetrates through the bearing seat, the other end of the first rod is positioned in the interior of the cyclone tank, and the first driving assembly is connected with the first rod and is used for driving the first rod to rotate; The second rod and the first rod are coaxially arranged and positioned in the cyclone tank, the second rod is movably arranged on the first rod, the second rod is hollow, an oil drain port is formed in the side wall in a penetrating mode, cavities in the first rod and the second rod are used for discharging waste oil, and the second driving assembly is connected with the second rod and used for driving the second rod to linearly move. By adopting the technical scheme, the wastewater enters the cyclone tank through the sewage discharge pipe, then the first driving assembly is operated to drive the whole central rod to rotate, so that the cyclone blades are driven to synchronously rotate, and according to the characteristic of oil-water density difference, the wastewater gradually forms oil-water layering in the rotating process by utilizing the centrifugal force generated by the cyclone. After the oil-water cyclone layering, the second driving assembly is operated to control the second rod to linearly move relative to the first rod, the position of the oil drain port is changed, the oil stain layer on the upper layer enters the oil drain port, and then the oil stain layer is discharged from the second rod and the inside of the first rod, so that the oil discharge process is realized. The rotation of the first rod can synchronously drive the second rod to rotate, and meanwhile, the second rod can move relative to the first rod, so that the position of the oil drain port is always above the oil-water phase interface. When the thickness of the oil stain layer is gradually reduced, the oil drai