CN111672642A - Built-in cone net type oil-sewage separation swirler - Google Patents

Built-in cone net type oil-sewage separation swirler Download PDF

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Publication number
CN111672642A
CN111672642A CN202010520713.6A CN202010520713A CN111672642A CN 111672642 A CN111672642 A CN 111672642A CN 202010520713 A CN202010520713 A CN 202010520713A CN 111672642 A CN111672642 A CN 111672642A
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CN
China
Prior art keywords
conical
flange
net
cavity
cone
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CN202010520713.6A
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Chinese (zh)
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CN111672642B (en
Inventor
陈勇
唐冰琳
陈奇益
王伟
胡从智
张仁坤
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Zhoushan Haida Science Technology Institute Co ltd
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Zhoushan Haida Science Technology Institute Co ltd
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Priority to CN202010520713.6A priority Critical patent/CN111672642B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08Vortex chamber constructions
    • B04C5/103Bodies or members, e.g. bulkheads, guides, in the vortex chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/22Apparatus in which the axial direction of the vortex is reversed with cleaning means
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material

Abstract

The invention provides a built-in conical net type oil-sewage separation cyclone, which belongs to the technical field of fluid machinery and comprises an upper cylindrical cavity, a lower conical cylindrical cavity and an overflow pipe, wherein a conical net component with a downward conical tip is mounted on the upper surface of the upper cylindrical cavity, an axisymmetric scraping component is sleeved outside the conical net component, the upper overflow pipe is arranged above the axisymmetric scraping component, the lower surface of the lower conical cylindrical cavity is connected with the lower cylindrical cavity, and a spiral blanking component is mounted inside the lower cylindrical cavity. The conical net component is beneficial to stabilizing the airflow in the central area of the vortex cavity, prevents solid particles from being back-mixed into the overflow pipe, guides the water and the solid particles to quickly descend and separate, is designed with the scraping component by utilizing the airflow action in the cavity of the cyclone, improves the common blockage problem of a filter screen, solves the problem of material accumulation caused by small discharge port, and enables the feeding and discharging speed to be adjustable, thereby improving the separation efficiency.

Description

Built-in cone net type oil-sewage separation swirler
Technical Field
The invention belongs to the technical field of fluid machinery, and particularly relates to a built-in conical net type oil-sewage separation cyclone.
Background
Because the oily sewage contains oil substances such as natural petroleum, petroleum products, tar and fractionated matters thereof and solid particles such as sludge, rust, sand and stone, the oily sewage can pollute the water body after being discharged into rivers, lakes or gulfs, so that the survival of aquatic organisms is influenced. The cyclone has been applied to China as a separation device, the separation principle is that centrifugal separation is carried out by using density difference between media, and the larger the density difference is, the better the separation effect is relatively. Therefore, how to improve the structure of the cyclone and improve the separation effect of the cyclone becomes a problem which needs to be solved urgently in the oil sewage treatment industry and related industries.
Disclosure of Invention
The invention aims to provide an oil-sewage separation cyclone with a built-in conical net, wherein the conical net is favorable for stabilizing air flow in a cavity in the central area of the cyclone, so that the interface between an oil layer and a water layer is stable, and the meshes can ensure that the separated oil enters an upward flow more stably and prevent solid particles from being mixed back into the upward flow, so that water and the solid particles are guided to fall and be separated quickly; the common blockage problem of the filter screen is improved by utilizing the airflow action in the cavity of the cyclone and the related structural design; the problem of material accumulation caused by small discharge port is solved, the feeding and discharging speed is adjustable, and the separation efficiency is improved.
The technical scheme adopted by the invention for realizing the purpose is as follows: a built-in cone net type oil-sewage separation cyclone comprises an upper cylinder cavity, a lower cone cylinder cavity and an overflow pipe, wherein the side surface of the upper end of the upper cylinder cavity is a circular mixture feeding hole and is connected with or positively or obliquely cut in a symmetrical position, the lower surface of the upper cylinder cavity is a cylinder lower flange, the upper surface of the cone cylinder cavity is a cone cylinder upper flange, the lower side of the cone cylinder cavity is a bottom flow pipe, the lower side of the cylinder lower flange is connected with a cone cylinder upper flange, the upper surface of the upper cylinder cavity is a cylinder upper flange, a cone net assembly is mounted on the cylinder upper flange, and the cone tip is downward and positioned on the inner side of the upper cylinder cavity; the overflow pipe passes through the center of the flange plate and is welded with the flange plate, and the flange plate is positioned above the conical net component. Compared with the traditional cyclone, the separation cyclone provided by the invention is additionally provided with the built-in cone net, the built-in cone net can stabilize the airflow in the cavity of the central area of the cyclone in the vortex cavity, reduce the swing of the rotation center, prevent the separated solid particles from being back-mixed into an upward flow, and guide the water and the solid particles to rapidly descend and separate. The cyclone has the characteristics of simple and compact structure, convenient assembly and disassembly, multistage series connection, small occupied area, high separation efficiency and wide application range.
Preferably, the lower surface of the lower conical cylinder cavity is a conical cylinder lower flange, the lower side of the conical cylinder lower flange is connected with a lower cylinder cavity, and a spiral blanking assembly is installed on the inner side of the lower cylinder cavity. With the variation of the feed delivery, no significant change in the diameter of the underflow pipe results in material accumulation and thus a reduction in separation efficiency. And the problem of material accumulation can be solved by adopting spiral blanking, so that the feeding and discharging speed can be adjusted, and the separation efficiency is improved.
Preferably, the spiral blanking assembly main body is an annular base, an annular base step is arranged on the upper side in the middle of the annular base, a spiral blade is welded on the lower side in the middle, the outer side of the spiral blade is connected with a plurality of fan blades, and a circular groove is formed in the lower side of the spiral blanking assembly main body; the inner diameter of the lower side of the middle of the annular base is the same as that of the underflow pipe, and the helical blade is a shaftless cone helical blade. This structure adopts inside and outside double helix mechanism, and the inboard is shaftless awl helical blade, and the awl point position is less than underflow mouthful internal diameter, can directly get into the underflow mouth and rotate the ejection of compact, avoids blockking up, and the outside adopts a plurality of flabellums to utilize current pneumatic equipment to provide the air current, and the velocity of flow is adjustable, economic environmental protection.
Preferably, the outer side surface of the lower cylinder cavity is provided with an air blowing port, and the inner lower side of the cavity is provided with an annular boss; the lower side of the lower flange of the cone cylinder is provided with a positioning ring, the positioning ring is embedded into the step of the annular base of the spiral blanking assembly, and the circular groove is matched with the annular boss of the cavity of the lower cylinder. The air blowing port is used for enabling air flow to enter the lower cylinder cavity to drive the spiral blanking assembly to work, and the air blowing port is matched with the spiral blanking assembly to be used for positioning the spiral blanking assembly, so that the spiral blanking assembly can only rotate, separated water and slag are smoothly discharged out of the cavity, and blockage is prevented.
Preferably, the upper end of the conical net component is provided with a flange fixing ring, the flange fixing ring is positioned above the upper flange of the cylinder, the center of the flange fixing ring is provided with a through hole, and the lower side of the flange fixing ring is provided with a conical net; the upper side of the conical net is welded with a ring body, the lower side of the conical net is welded with a rotating shaft, the rotating shaft is a spherical body or a cylinder, and the inner diameter of the ring body is consistent with the inner diameter of the upper edge of the conical net; the lower side of the flange fixing ring is spirally connected or welded with the middle of the ring body through four cylinders. The cone net is fixed through the flange fixing ring, so that the cone net is coaxial with each cavity, the swing of a rotation center is stabilized, the occurrence of adverse factors such as short-circuit flow and inner circulation flow in a cavity is reduced, an interface between an oil layer and a water layer is stable, oil can stably enter an upflow due to the existence of a grid, slag is prevented from being mixed back into the upflow, water and slag are guided to rapidly descend and separate, the reduction of energy consumption is facilitated, and the separation efficiency is improved.
Preferably, the upper edge of the conical net is positioned below the mixture feeding hole and above the bottom of the overflow pipe, the diameter of the upper edge is larger than the diameter of the overflow pipe and smaller than two thirds of the diameter of the upper cylinder cavity, and the conical angle of the net is 15-45 degrees. After entering from the inlet, the mixed oil sewage flows downwards along the wall surface in a rotating way to generate centrifugal force, and an oil layer, a water layer and a grain slag layer are quickly formed. Because the cyclone has special hydraulic characteristics, the inside of the cyclone forms upward rotary flow, the structure design is favorable for quickly concentrating the oil phase after separation and filtration and enabling the oil phase to enter the overflow pipe, the collected oil phase is ensured to achieve the optimal separation effect, and the cone angles of all levels of cone nets can be adjusted according to the proportion of oil, water and slag to improve the separation efficiency.
Preferably, the outer side of the conical net component is sleeved with a scraping component which is in an axisymmetric structure. The scraping component directly utilizes the airflow action in the cyclone cavity to promote the scraping component to continuously rotate in the cyclone cavity, and the symmetrical structure is adopted to ensure that all parts are uniformly stressed, so that unnecessary abrasion is reduced.
Preferably, the scraping component comprises a large circular ring and a small circular ring, a spherical groove or a cylindrical groove is arranged in the center of the small circular ring, the large circular ring is arranged on the upper portion, the small circular ring is arranged on the lower portion and is respectively installed on the outer sides of the ring body and the rotating shaft, four evenly-distributed sliding blocks are fixed on the upper side of the large circular ring through screws, four rib plates with notches are obliquely and evenly distributed between the large circular ring and the small circular ring, and scraping plates are installed in the notches. The scraping component is positioned by four evenly distributed sliding blocks arranged on the large circular ring, and can scrape along the axial rotation to clean the filter screen, the power source of the scraping component is the airflow action in the cavity of the cyclone, the continuously separated oil phase can also provide the lubricating action for the cyclone, and no power or lubrication is needed to be additionally provided, so that the cleaning device is simplified, the defect that the filter screen is easy to block is overcome, and the shutdown cleaning time is saved.
Preferably, the inner inclined surface of the scraper is tightly attached to the outer conical surface of the conical net, and the scraper is plate-shaped or hairbrush-shaped. The blade fit helps clean thoroughly.
Preferably, the central axes of the lower conical cylinder cavity, the spiral blanking component, the lower cylindrical cavity, the conical net component, the scraping component, the upper overflow pipe, the first sealing ring, the second sealing ring and the third sealing ring are all coincided with the central axis of the upper cylindrical cavity. The cyclone is integrally of a centrosymmetric structure, is convenient to process, has the same air pressure at the same position and good air tightness, is beneficial to stabilizing airflow of a rotational flow cavity, reduces energy consumption and improves separation efficiency.
Compared with the prior art, the invention has the beneficial effects that: the separating cyclone provided by the invention is provided with a mode of combining a built-in conical net, a scraping component and spiral blanking aiming at the traditional cyclone, the built-in conical net can stabilize the airflow in the cavity of the central area of the cyclone in a cyclone cavity, prevent the separated solid particles from being back-mixed into an overflow port, guide the water and the solid particles to quickly descend and separate, and simultaneously can directly utilize the airflow in the cavity of the cyclone to promote the scraping component to continuously rotate in the cyclone cavity to treat filter screen attachments without providing other power, so that a cleaning device is simplified, the shutdown cleaning time is saved, the problem of material accumulation caused by a small discharge port is solved by adopting the spiral blanking, the discharge speed regulation treatment can be carried out while the feeding speed is regulated, and the separation effect and the separation efficiency are improved Small occupied area, high separation efficiency and wide application range.
The invention adopts the technical scheme to provide the built-in conical net type oil-sewage separation cyclone, overcomes the defects of the prior art, and has simple and reasonable design and convenient operation.
Drawings
FIG. 1 is a cross-sectional view of a cyclone assembly according to embodiment 1 of the present invention;
FIG. 2 is an exploded view of a cyclone assembly according to example 1 of the present invention;
FIG. 3 is a schematic view of the upper cylindrical chamber in example 1 of the present invention;
FIG. 4 is a schematic view of a lower conical cylinder chamber in embodiment 1 of the present invention;
FIG. 5 is a schematic view of a coned net assembly according to example 1 of the present invention;
FIG. 6 is a schematic view of an upper overflow pipe according to embodiments 1 and 2 of the present invention;
FIG. 7 is a sectional view of a cyclone assembly according to embodiment 2 of the present invention;
FIG. 8 is an exploded view of the cyclone assembly of example 2 of the present invention;
FIG. 9 is a partial cross-sectional view of a spiral blanking mechanism of a swirler in accordance with embodiment 2 of the present invention;
FIG. 10 is a schematic view of a spiral blanking assembly of a swirler in accordance with example 2 of the present invention;
FIG. 11 is a schematic view of a cone net assembly of a swirler in accordance with embodiment 2 of the present invention;
FIG. 12 is a schematic view of a scraping assembly of a cyclone in accordance with example 2 of the present invention;
FIG. 13 is a schematic view of the upper cylindrical chamber in example 2 of the present invention;
FIG. 14 is a schematic view of a lower conical cylinder chamber in embodiment 2 of the present invention;
FIG. 15 is a schematic view of a cone net assembly of a swirler in accordance with embodiment 3 of the present invention;
FIG. 16 is a schematic view of a scraping assembly of a cyclone in accordance with embodiment 3 of the present invention;
figure 17 shows the separation efficiency of cyclones according to example 5 of the present invention with 30 ° conical mesh and without conical mesh at different throughputs.
Description of reference numerals: an upper cylindrical chamber 1; a lower conical cylinder cavity 2; a spiral blanking assembly 3; a lower cylindrical chamber 4; a conical net component 5; a scraping assembly 6; an upper overflow pipe 7; a first sealing ring 8; a second sealing ring 9; a third sealing ring 10; a mixture feed port 11; a cylindrical upper flange 12; a cylindrical lower flange 13; a cone upper flange 21; an underflow pipe 22; a cone lower flange 23; a positioning ring 24; an annular base 31; an annular base step 32; the helical blades 33; fan blades 34; a circular groove 35; an air blowing port 41; a boss 42; a flange fixing ring 51; a via 52; a cylinder 53; a ring body 54; a conical mesh 55; a rotating shaft 56; a large circular ring 61; a slider 62; the rib plate 63; a squeegee 64; a small circular ring 65; an overflow pipe 71; a flange 72.
Detailed Description
The invention is described in further detail below with reference to examples and figures:
example 1:
as shown in fig. 1-6, a built-in conical net type oil-sewage separation cyclone comprises an upper cylindrical cavity 1, a lower conical cylindrical cavity 2 and an overflow pipe 71, wherein the side surface of the upper end of the upper cylindrical cavity 1 is a circular mixture feed inlet 11, the mixture feed inlet 11 is located at a symmetrical position of a cylinder body, the lower surface of the upper cylindrical cavity 1 is a cylindrical lower flange 13, the upper surface of the lower conical cylindrical cavity 2 is a conical cylinder upper flange 21, the lower side of the lower conical cylindrical cavity 2 is an underflow pipe 22, the lower side of the cylindrical lower flange 13 is connected with the conical cylinder upper flange 21, the upper surface of the upper cylindrical cavity 1 is a cylindrical upper flange 12, a conical net component 5 is mounted on the cylindrical upper flange 12, and a conical tip is downward and located inside the upper cylindrical cavity; the overflow pipe 71 passes through the center of the flange 72 and is welded to the flange 72, and the flange 72 is positioned above the conical net assembly 5. Compared with the traditional cyclone, the cyclone provided by the invention is additionally provided with the built-in cone net, the built-in cone net can stabilize the airflow in the cavity of the central area of the cyclone in the vortex cavity, reduce the swing of the rotation center, prevent the separated solid particles from being back-mixed into the ascending flow, and guide the water and the solid particles to rapidly descend and separate. Meanwhile, the cyclone has the characteristics of simple and compact structure, convenience in disassembly and assembly, capability of being connected in series in multiple stages, small occupied area, high separation efficiency and wide application range.
The upper end of the conical net component 5 is provided with a flange fixing ring 51, the flange fixing ring 51 is positioned above the cylindrical upper flange 12, the center of the flange fixing ring 51 is provided with a through hole 52, and the lower side of the flange fixing ring is provided with a conical net 55; the upper side of the conical net 55 is welded with a ring body 54, the lower side of the conical net 55 is welded with a rotating shaft 56, and the inner diameter of the ring body 54 is consistent with that of the upper edge of the conical net 55; the lower side of the flange fixing ring 51 is spirally connected or welded with the middle of the ring body 54 through four columns 53. The cone net is fixed through the flange fixing ring, so that the cone net is coaxial with each cavity, the swing of the rotation center is stabilized, the occurrence of adverse factors such as short-circuit flow and inner circulation flow in the cavity is reduced, the interface between an oil layer and a water layer is stable, the existence of the grid prevents slag from back-mixing into an ascending flow, oil can stably enter the overflow pipe, peripheral water and slag are guided to continue to move downwards along the conical surface of the cone net 55, the reduction of energy consumption is facilitated, and the separation efficiency is improved.
The upper edge of the conical net 55 is positioned below the mixture feeding hole 11 and above the bottom of the overflow pipe 71, the diameter of the upper edge is larger than that of the overflow pipe 71 and smaller than two thirds of the diameter of the upper cylinder cavity 1, and the conical angle of the net is 15-45 degrees. After entering from the inlet, the mixed oil sewage flows downwards along the wall surface in a rotating way to generate centrifugal force, and an oil layer, a water layer and a grain slag layer are quickly formed. Because the cyclone has special hydraulic characteristics, the inside of the cyclone forms upward rotary flow, the structure design is favorable for quickly concentrating the oil phase after separation and filtration and enabling the oil phase to enter the overflow pipe, the collected oil phase is ensured to achieve the optimal separation effect, and the cone angles of all levels of cone nets can be adjusted according to the proportion of oil, water and slag to improve the separation efficiency.
The central axes of the upper cylinder cavity 1, the lower conical cylinder cavity 2, the conical net component 5 and the upper overflow pipe 7 are all coincided. The cyclone has a central symmetrical structure and the same air pressure at the same position, which is helpful for the airflow stability of the cyclone cavity, reduces the energy consumption and improves the separation efficiency.
Example 2:
as shown in fig. 6-14, a built-in conical net type oil-sewage separation cyclone comprises an upper cylindrical cavity 1, a lower conical cylindrical cavity 2 and an overflow pipe 71, wherein the side surface of the upper end of the upper cylindrical cavity 1 is a circular mixture feed port 11, the mixture feed port 11 is obliquely cut, the lower surface of the upper cylindrical cavity 1 is a cylindrical lower flange 13, the upper surface of the lower conical cylindrical cavity 2 is a conical cylinder upper flange 21, the lower side of the lower conical cylinder cavity 2 is an underflow pipe 22, the lower side of the cylindrical lower flange 13 is connected with a conical cylinder upper flange 21, the upper surface of the upper cylindrical cavity 1 is a cylindrical upper flange 12, a conical net component 5 is mounted on the cylindrical upper flange 12, and the conical tip is downward and positioned inside the upper cylindrical cavity 1; the overflow pipe 71 passes through the center of the flange 72 and is welded to the flange 72, and the flange 72 is positioned above the conical net assembly 5. According to the invention, the feed inlet is obliquely cut in, so that the mixed oil sewage just entering the chamber has a downward initial speed under the action of inertia force and gravity, the phenomenon that the separation effect is influenced by short-circuit flow formed at the initial feeding of the upper part of the chamber is prevented, and meanwhile, the change of the initial movement direction of the airflow is beneficial to reducing pressure drop loss and improving the separation efficiency. Compared with the traditional cyclone, the cyclone is additionally provided with the built-in cone net, the built-in cone net can stabilize the airflow in the cavity of the center area of the cyclone in the vortex cavity, reduce the swing of the rotation center, prevent the separated solid particles from back mixing into the ascending flow, and guide the water and the solid particles to rapidly descend and separate. Meanwhile, the cyclone has the characteristics of simple and compact structure, convenience in disassembly and assembly, capability of being connected in series in multiple stages, small occupied area, high separation efficiency and wide application range.
The lower surface of the lower conical cylinder cavity 2 is a conical cylinder lower flange 23, the lower side of the conical cylinder lower flange 23 is connected with a lower cylinder cavity 4, and a spiral blanking assembly 3 is installed on the inner side of the lower cylinder cavity 4. As the feed throughput changes, no significant change in the diameter of the underflow pipe 22 will result in material accumulation and thus reduced separation efficiency. And the spiral blanking assembly 3 can solve the problem of material accumulation, so that the feeding and discharging speed can be adjusted, and the separation efficiency is improved.
The main body of the spiral blanking component 3 is an annular base 31, an annular base step 32 is arranged on the upper side of the middle of the annular base 31, a spiral blade 33 is welded on the lower side of the middle, a plurality of fan blades 34 are connected on the outer side, and a circular groove 35 is arranged on the lower side; the inner diameter of the middle lower side of the annular base 31 is the same as the inner diameter of the underflow pipe 22, and the helical blade 33 is a shaftless conical helical blade. This structure adopts inside and outside double helix mechanism, and the inboard does not have the awl helical blade, and the awl point portion can directly get into the underflow mouth and rotate the ejection of compact, avoids blockking up, and the outside adopts a plurality of flabellums to utilize current pneumatic equipment to provide the air current, and the velocity of flow is adjustable, economic environmental protection.
The outer side surface of the lower cylinder cavity 4 is provided with an air blowing port 41, and the lower side in the cavity is provided with an annular boss 42; the lower side of the conical cylinder lower flange 23 is provided with a positioning ring 24, the positioning ring 24 is embedded into the annular base step 32 of the spiral blanking component 3, and the circular groove 35 is matched with the annular boss 42 of the lower cylinder cavity 4. The air blowing port 41 is used for enabling air flow to enter the lower cylinder cavity to drive the spiral blanking assembly 3 to work, and the air blowing port is matched with the spiral blanking assembly 3 to be used for positioning the spiral blanking assembly 3, so that the spiral blanking assembly can only rotate, separated water and slag can be smoothly discharged out of the cavity, and blocking is prevented.
The upper end of the conical net component 5 is provided with a flange fixing ring 51, the flange fixing ring 51 is positioned above the cylindrical upper flange 12, the center of the flange fixing ring 51 is provided with a through hole 52, and the lower side of the flange fixing ring is provided with a conical net 55; the upper side of the conical net 55 is welded with a ring body 54, the lower side of the conical net 55 is welded with a rotating shaft 56, the rotating shaft 56 is a cylinder, and the inner diameter of the ring body 54 is consistent with that of the upper edge of the conical net 55; the lower side of the flange fixing ring 51 is spirally connected or welded with the middle of the ring body 54 through four columns 53. The cone net is fixed through the flange fixing ring, so that the cone net is coaxial with each cavity, the swing of a rotation center is stabilized, the occurrence of adverse factors such as short-circuit flow and inner circulation flow in the cavity is reduced, the interface between an oil layer and a water layer is stable, the existence of the grid prevents slag from back-mixing into an ascending flow, oil can stably enter the overflow pipe, water and slag on the periphery of the cone net 55 are guided to continue to do spiral motion downwards, and the energy consumption is reduced until the water and slag enter a bottom flow port of the separation cavity in a rotating mode, and the classification efficiency is improved.
The upper edge of the conical net 55 is positioned below the mixture feeding hole 11 and above the bottom of the overflow pipe 71, the diameter of the upper edge is larger than that of the overflow pipe 71 and smaller than two thirds of the diameter of the upper cylinder cavity 1, and the conical angle of the net is 15-45 degrees. After entering from the inlet, the mixed oil sewage flows downwards along the wall surface in a rotating way to generate centrifugal force, and an oil layer, a water layer and a grain slag layer are quickly formed. Because the cyclone has special hydraulic characteristics, the inside of the cyclone forms upward rotary flow, the structure design is favorable for quickly concentrating the oil phase after separation and filtration and enabling the oil phase to enter the overflow pipe, the collected oil phase is ensured to achieve the optimal separation effect, and the cone angles of all levels of cone nets can be adjusted according to the proportion of oil, water and slag to improve the separation efficiency.
The outer side of the conical net component 5 is sleeved with a scraping component 6, and the scraping component 6 is in an axisymmetric structure. The scraping component 6 directly utilizes the airflow action in the cyclone cavity to promote the scraping component 6 to continuously rotate in the cyclone cavity, and the symmetrical structure is adopted to ensure that all parts are uniformly stressed and reduce unnecessary abrasion.
The scraping component 6 comprises a large circular ring 61 and a small circular ring 65, the center of the small circular ring 65 is a cylindrical groove, the large circular ring 61 is arranged on the upper portion, the small circular ring 65 is arranged on the lower portion and is respectively arranged on the outer sides of the ring body 54 and the rotating shaft 56, the corresponding heights of the large circular ring 61 and the rotating shaft are the same, the upper surface and the lower surface of the small circular ring 65 are coplanar, four evenly-distributed sliding blocks 62 are fixed on the upper side of the large circular ring 61 through screws, four rib plates 63 with notches are evenly distributed between the large circular ring 61 and the small circular ring 65 in. The scraping component 6 is positioned by four evenly distributed sliding blocks 62 arranged on a large circular ring 61, and can scrape and clean the conical net 55 by rotating around the axial direction, the power source of the scraping component is the airflow action in the cavity of the cyclone, the continuously separated oil phase can also provide the lubricating action for the cyclone, and no power or lubrication is required to be additionally provided, so that the cleaning device is simplified, the defect that the filter screen is easy to block is overcome, and the shutdown and cleaning time is saved.
The scraping plate 64 is plate-shaped or brush-shaped, and the inner inclined surface of the scraping plate 64 is closely attached to the outer conical surface of the conical net 55. The blade 64 conforms to aid in thoroughly cleaning the awl network 55.
The central axes of the upper cylinder cavity 1, the lower conical cylinder cavity 2, the spiral blanking component 3, the lower cylinder cavity 4, the conical net component 5, the scraping component 6, the upper overflow pipe 7, the first sealing ring 8, the second sealing ring 9 and the third sealing ring 10 are coincident. The sealing rings I8, II 9 and III 10 are additionally arranged at the positions of flanges between the upper cylindrical cavity 1 and the lower conical cylindrical cavity 2, between the upper cylindrical cavity 1 and the conical net component 5, and between the conical net component 5 and the upper overflow pipe 7 respectively, so that the air tightness of the cyclone cavity can be guaranteed, the cyclone is integrally of a central symmetry structure, the air pressure at the same position is the same, the stability of airflow in the cyclone cavity is facilitated, the energy consumption is reduced, and the separation efficiency is improved.
Example 3:
the other specific implementation manner is the same as that of embodiment 2, except that the rotating shaft 56 welded to the lower side of the conical screen assembly 5 is a spherical body, the central position of the small circular ring 65 on the lower side of the scraping assembly 6 is a spherical groove, the spherical rotating shaft 56 is matched with the spherical groove at the central position of the small circular ring 65, and the scraping assembly 6 can rotate around the vertical axis corresponding to the spherical center, as shown in fig. 15 and 16. For the cooperation or other cooperation modes of embodiment 2 face of cylinder, adopt the sphere cooperation to make the rotation more smooth and easy, be difficult for blocking, can improve scraping efficiency to improve separation efficiency.
Example 4:
according to the built-in conical net type oil-sewage separation cyclone, during actual work, oil-sewage enters the cyclone from the mixture feeding hole 11 at a high speed in the tangential direction, and due to the limitation of the wall of the cyclone cavity formed by the upper cylindrical cavity 1 and the lower conical cavity 2, airflow in the cavity is forced to drive materials to continuously perform ascending, rotating and descending motions, and in the process, the materials are promoted to be centrifugally separated by utilizing the density difference between media, and the larger the density difference is, the better the separation effect is relatively. When the vortex motion is generated, the pressure distribution along the radial direction is uneven, the conical net component 5 changes the airflow motion in the cavity of the central area of the cyclone in the cyclone cavity, the swing of the rotation center of the cyclone is reduced, the separated solid particles are prevented from being back-mixed into the overflow pipe, water and slag are guided to rapidly descend and separate, and meanwhile, the airflow action in the cavity of the cyclone is utilized to enable the scraping component 6 to continuously rotate in the cyclone cavity so as to treat attachments on the conical net 55. The separated water and slag are discharged from the underflow pipe 22, and the diameter of the underflow pipe is generally small, so that the spiral blanking component 3 drives the conical spiral blade 33 to perform spiral blanking action under the action of air flow generated by the air blowing port 41 on the lower cylinder cavity 4, and accumulation is prevented. The cyclone separation process can adapt to different feeding and discharging speeds, and can meet the separation of various different substances through series connection, thereby improving the separation efficiency.
Example 5:
the cyclone is a deoiling cyclone and contains three phases of oil, water and slag, a test experiment medium is GL3-85W/90D type engine oil mixed with water and silt, the oil-containing concentration of oil-contaminated water is 2000mg/L, the temperature is set to be 46 ℃, and the oil-water density difference is large at the moment, so that the separation is convenient. The split ratio is 8 percent, the inlet pressure is 2MPa, the overflow port is 0.1 MPa, and the underflow port is 0.2 MPa. Guiding the oil-contaminated water after standing and mixing into the cavity of the cyclone through the mixture feeding port 11, adjusting the treatment capacity of the feeding port, repeating the process for 10 times in each group, and taking an average value, as shown in figures 1-6 and 17, respectively comparing the separation efficiency of the oil-contaminated water under the condition of installing a 30-degree cone net and the condition of not installing the cone net. The separation efficiency of the conical net with 30 degrees is averagely 2.4 percent higher than that of the conical net without the conical net, which shows that the conical net plays a certain role in stabilizing the central air flow of the cyclone cavity, prevents the separated water slag from being back-mixed in the separated oil phase, and improves the separation efficiency. The invention can also adapt to the separation of different oil, water and slag proportions by adjusting the taper angles of the taper nets at all levels, and can meet the separation of different density phases by multi-level series connection, which is not described again.
The above-described preferred embodiments illustrate rather than limit the invention, and those skilled in the art will be able to make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims (10)

1. The utility model provides a built-in awl net type oily sewage separation swirler, includes last cylinder cavity (1), circular cone chamber (2) and overflow pipe (71) down, the upper end side of going up cylinder cavity (1) is circular mixture feed inlet (11), it is drum flange (13) down to go up cylinder cavity (1) lower surface, circular cone chamber (2) upper surface is a cone upper flange (21), circular cone chamber (2) downside is underflow pipe (22), a cone upper flange (21), its characterized in that are connected to drum flange (13) downside: the upper surface of the upper cylinder cavity (1) is provided with an upper cylinder flange (12), the upper cylinder flange (12) is provided with a conical net component (5), and a conical tip is downward and positioned on the inner side of the upper cylinder cavity (1); the overflow pipe (71) penetrates through the center of the flange (72) and is welded with the flange (72), and the flange (72) is positioned above the conical net component (5).
2. The built-in cone net type oil-sewage separation cyclone of claim 1, wherein: the lower surface of the lower conical cylinder cavity (2) is a conical cylinder lower flange (23), the lower side of the conical cylinder lower flange (23) is connected with a lower cylinder cavity (4), and a spiral blanking assembly (3) is installed on the inner side of the lower cylinder cavity (4).
3. The built-in cone net type oil-sewage separation cyclone of claim 2, wherein: the spiral blanking assembly (3) is characterized in that the main body is an annular base (31), an annular base step (32) is arranged on the upper side of the middle of the annular base (31), a spiral blade (33) is welded on the lower side of the middle, a plurality of fan blades (34) are welded on the outer side of the middle of the annular base, and a circular groove (35) is formed in the lower part of the annular base; the inner diameter of the lower side of the middle of the annular base (31) is the same as that of the underflow pipe (22), and the helical blade (33) is a shaftless cone helical blade.
4. The built-in cone net type oil-sewage separation cyclone as claimed in claim 2 or 3, wherein: an air blowing port (41) is formed in the outer side surface of the lower cylinder cavity (4), and an annular boss (42) is formed below the inner side of the lower cylinder cavity; a positioning ring (24) is arranged on the lower side of the conical cylinder lower flange (23), the positioning ring (24) is embedded into an annular base step (32) of the spiral blanking assembly (3), and a circular groove (35) is matched with an annular boss (42) of the lower cylinder cavity (4).
5. The built-in cone net type oil-sewage separation cyclone of claim 1, wherein: the upper end of the conical net component (5) is provided with a flange fixing ring (51), the flange fixing ring (51) is positioned above the upper flange (12) of the cylinder, the center of the flange fixing ring (51) is provided with a through hole (52), and the lower side of the flange fixing ring is provided with a conical net (55); a ring body (54) is welded on the upper side of the conical net (55), a rotating shaft (56) is welded on the lower side of the conical net (55), the rotating shaft (56) is a spherical body or a cylinder, and the inner diameter of the ring body (54) is consistent with that of the upper edge of the conical net (55); the lower side of the flange fixing ring (51) is spirally connected or welded with the middle of the ring body (54) through four columns (53).
6. The built-in cone net type oil-sewage separation cyclone of claim 5, wherein: the upper edge of the conical net (55) is positioned below the mixture feeding hole (11), the diameter of the upper edge is larger than that of the overflow pipe (71) and smaller than two thirds of the diameter of the upper cylinder cavity (1) above the bottom of the overflow pipe (71), and the conical angle of the net is 15-45 degrees.
7. The built-in cone net type oil-sewage separation cyclone of claim 1, wherein: the outer side of the conical net component (5) is sleeved with a scraping component (6), and the scraping component (6) is of an axisymmetric structure.
8. The built-in cone net type oil-sewage separation cyclone of claim 7, wherein: scraping component (6) contain big ring (61) and little ring (65), little ring (65) central point puts and contains a ball groove or cylinder groove, big ring (61) are last, install respectively in ring body (54) and pivot (56) outside little ring (65) are under, slider (62) of a plurality of equipartitions are fixed with the screw to big ring (61) upside, equipartition oblique joint four floor (63) of taking the notch in the middle of big ring (61) and little ring (65), installation scraper blade (64) in the notch.
9. The built-in cone net type oil-sewage separation cyclone of claim 8, wherein: the inner inclined plane of the scraper (64) is tightly attached to the outer conical surface of the conical net (55), and the scraper (64) is plate-shaped or hairbrush-shaped.
10. The built-in cone net type oil-sewage separation cyclone of claim 1, wherein: the central axes of the lower conical cylinder cavity (2), the spiral blanking component (3), the lower cylindrical cavity (4), the conical net component (5), the scraping component (6) and the upper overflow pipe (7) are coincided with the central axis of the upper cylindrical cavity (1).
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CN112604825A (en) * 2020-11-26 2021-04-06 东北石油大学 Cyclone separator length self-adaptation underflow device
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CN112604825B (en) * 2020-11-26 2022-08-30 东北石油大学 Cyclone separator length self-adaptation underflow device
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CN112674317A (en) * 2020-12-23 2021-04-20 唐浩 Papain-type seasoning for pickling duck intestines and preparation method thereof
CN113333185A (en) * 2021-06-01 2021-09-03 中国石油大学(华东) Three-phase cyclone separator with flow guide cone at center
CN113333185B (en) * 2021-06-01 2022-03-04 中国石油大学(华东) Three-phase cyclone separator with flow guide cone at center

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