CN106430791B - Dirty profit vacuum separation equipment - Google Patents

Dirty profit vacuum separation equipment Download PDF

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Publication number
CN106430791B
CN106430791B CN201611036046.4A CN201611036046A CN106430791B CN 106430791 B CN106430791 B CN 106430791B CN 201611036046 A CN201611036046 A CN 201611036046A CN 106430791 B CN106430791 B CN 106430791B
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oil
water
dirty
dirty oil
flow
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CN106430791A (en
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陈鸽
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SHANGHAI HONES ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd.
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Shanghai Hones Environmental Protection Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • 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
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • 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
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/06Pressure conditions
    • C02F2301/063Underpressure, vacuum
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Filtration Of Liquid (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention discloses dirty oil-water vacuum separation equipment which comprises an oil-water preseparator, an oil-water separator, a vacuum evaporator, a vacuum pump and a flow guide device. The water outlet of the oil-water pre-separator is communicated with the input port of the oil-water separator, and the oil outlet of the oil-water pre-separator and the oil outlet of the oil-water separator are respectively communicated with the input port of the vacuum evaporator; the air pumping port of the oil-water pre-separator, the air pumping port of the oil-water separator and the air pumping port of the vacuum evaporator are respectively communicated with a vacuum pump. The built-in tube-shape of oil water separator crosses the filter core, and guiding device includes along the water conservancy diversion portion that the equidirectional direction was arranged, is assembled in the inside of crossing the filter core top. According to the invention, oil-water separation is carried out under a vacuum condition, the flow guide device guides the flow direction of the dirty oil water flowing to the filter element, oil-water pre-separation treatment is carried out on the dirty oil water again, dirty oil drops accumulated on the filter element are removed in time, the filtering load of the filter element is reduced, and the separation effect and the separation efficiency of the separation equipment are improved.

Description

Dirty profit vacuum separation equipment
Technical Field
The invention relates to dirty oil-water separation equipment, in particular to dirty oil-water vacuum separation equipment which guides the flow direction of dirty oil water to be treated and performs oil-water separation under a vacuum condition, and belongs to the field of sewage treatment.
Background
With the rapid development of society and the great improvement of the life quality of people, people generate a large amount of oily sewage in daily life activities, such as domestic sewage generated in the life activities, particularly a large amount of catering sewage generated in the catering industry; for example, ship sewage generated by ships on which people travel and play contains a large amount of dirty oil. The direct discharge of oily sewage inevitably causes pollution to the river or the sea, and influences the normal growth of river organisms or marine organisms. The national and international maritime organizations put higher standards on the discharge of oily wastewater, requiring that the oil content in the discharged wastewater be less than 15 ppm. Therefore, the ship and the catering industry are equipped with a dirty oil-water separation device, but the dirty oil-water separation device still has a plurality of problems in the using process: on one hand, the dirty oil-water separation device performs oil-water separation treatment on dirty oil water to be treated under normal pressure, and the separation effect is poor; on the other hand, the flow direction of the dirty oil water to be treated is disordered when the dirty oil water flows into the filter element, so that the collected oil on the filter element is not easy to float upwards in time; therefore, the oil-water separation effect is poor, multiple times of circulating treatment are often needed, and the treatment efficiency is low.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a dirty oil-water vacuum separation device which is used for pre-separating dirty oil-water to be treated, guiding the flow direction of the dirty oil-water flowing to a filter element to ensure that the dirty oil-water flows orderly, promoting collected oil on the filter element to float upwards in time, and simultaneously pre-separating the dirty oil-water again, so that the oil content of the dirty oil-water flowing into the filter element is reduced, the filtering load of the filter element is reduced, and the oil-water separation effect and the separation efficiency are improved; finally, the separated dirty oil is subjected to vacuum evaporation to reduce the water content in the discharged dirty oil and improve the utilization value of the dirty oil.
The technical scheme of the invention is to provide dirty oil water vacuum separation equipment, which is characterized by comprising
The oil-water pre-separator 100 is used for performing oil-water pre-separation treatment on dirty oil-water to be treated, and is provided with a 1 st suction opening 105 for vacuumizing, a 1 st water discharge opening 103 for discharging the dirty oil-water and a 1 st oil discharge opening 104 for discharging the dirty oil;
the oil-water separator 200 is used for performing oil-water separation treatment on the pre-separated dirty oil water, and is provided with a 2 nd pumping hole 212 for vacuumizing, a 2 nd input hole 204 for inflow of the dirty oil water and a 2 nd oil discharge hole 205 for discharge of the dirty oil; the 1 st water outlet 103 is communicated with the 2 nd input port 204; the oil-water separator 200 is provided with a filter element 202 therein, the filter element 202 is mainly composed of a 1 st filter element 2021 for roughly filtering dirty oil water, and the 1 st filter element 2021 is cylindrical and vertically arranged;
a flow guide device 214 for guiding the flow of the dirty oil water flowing to the 1 st strainer 2021, which is installed inside the 1 st strainer 2021 and located on the top side of the 1 st strainer 2021; the flow guiding device 214 comprises an input part 2142 for the inflow of the dirty oil water and a flow guiding part 2143 for guiding the outflow direction of the dirty oil water, and the output ports of the flow guiding part 2143 are distributed along the same angular direction; the input portion 2142 and the 2 nd input port 204 are in communication;
a vacuum evaporator 300 for reducing the water content in the separated dirty oil, on which a 3 rd suction port 303 for vacuum suction and a 3 rd input port 302 for inflow of dirty oil are provided; the 1 st oil drain port 104 and the 2 nd oil drain port 205 are respectively communicated with the 3 rd input port 302;
the input port of the vacuum pump 400 is communicated with the 1 st pumping hole 102, the 2 nd pumping hole 212 and the 3 rd pumping hole 303 respectively.
The present invention can be applied to the following further preferred technical solutions.
Preferably, the flow guiding device 214 further includes a slow flow cavity 2141, and the slow flow cavity 2141 is an annular hollow cavity mainly formed by a side wall and is arranged along the horizontal plane direction; the output port of the input part 2142 and the input port of the flow guiding part 2143 are respectively communicated with the buffer cavity 2141; the flow guide portions 2143 are distributed around the axis of the flow slowing cavity 2141, and the angular directions of the distribution of the output ports of the flow guide portions 2143 are consistent.
Preferably, the output port of the input portion 2142 and the input port of the flow guiding portion 2143 are respectively in tangential communication with the side wall of the slow flow cavity 2141, and the angular directions of the output ports of the input portion 2142 and the output ports of the flow guiding portion 2143 are consistent; preferably, the flow guiding portion 2143 is arranged obliquely downward, and an angle between an output port of the flow guiding portion 2143 and a horizontal plane is 1 to 10 degrees.
Preferably, the flow guiding device 214 further includes a flow guiding cylinder 2145 formed by a side wall in a bell mouth shape; the outer diameter of the guide cylinder 2145 is smaller than the inner diameter of the 1 st filter element 2021, and the upper end part of the guide cylinder 2145 is larger than the lower end part; the guide cylinder 2145 is assembled between the slow flow cavity 2141 and the 1 st filter element 2021, and the upper end of the guide cylinder 2145 is higher than the upper end of the 1 st filter element 2021.
Preferably, the lower end of the guide cylinder 2145 is provided with an inward extending inward flange 2146.
Preferably, the flow guiding device 214 further includes a circular flow stabilizing plate 2147, the flow stabilizing plate 2147 is assembled on the upper end portion of the flow guiding cylinder 2145 and located above the slow flow cavity 2141, the outer circumferential side of the flow stabilizing plate 2147 is attached to the inner wall of the flow guiding cylinder 2145, and the lower surface is attached to the slow flow cavity 2141.
Preferably, the flow guiding device 214 further includes a flow guiding heater 2144 in an annular shape and adapted to the slow flow cavity 2141, for heating the inputted dirty oil water, and the flow guiding heater 2144 is assembled inside the slow flow cavity 2141.
Preferably, the oil-water separator 200 includes a 1 st separation chamber a, a 2 nd separation chamber B, and a 3 rd separator C, which are sequentially connected, and the 2 nd separation chamber B and the 3 rd separator C are located below the 1 st separation chamber a; the filter element 202 also comprises a 2 nd filter element 2022 for fine filtration and a 3 rd filter element 2023 for adsorption filtration; the 1 st filter element 2021, the 2 nd filter element 2022 and the 3 rd filter element 2023 are assembled in the 1 st separation chamber a, the 2 nd separation chamber B and the 3 rd separator C in sequence.
Preferably, the oil-water separator 100 incorporates first baffles GB1, second baffles GB2 and third baffles GB3 arranged vertically in this order, and the third baffles GB3 are located on one end side of the first water discharge port 103; the 1 st baffle GB1 is attached to the bottom wall, the front side wall and the rear side wall of the oil-water preseparator 100; a gap for flowing dirty oil and water is arranged between the No. 2 baffle GB2 and the bottom wall of the oil-water pre-separator 100, the No. 2 baffle GB2 is attached to the front side wall and the rear side wall of the oil-water pre-separator 100, and the lower end part of the No. 2 baffle GB2 is higher than the upper end part of the No. 1 baffle GB 1; the 3 rd baffle GB3 is attached to the bottom wall, front and rear side walls of the oil-water preseparator 100, and the upper end of the 3 rd baffle GB3 is lower than the upper end of the 2 nd baffle GB 2.
Preferably, the vacuum evaporator 300 includes a sealed evaporator cavity 301, a 3 rd heater 305, a 3 rd temperature measuring device 306 and a 3 rd vacuum gauge 307, wherein the top of the evaporator cavity 301 is provided with a 3 rd pumping hole 303 for pumping vacuum, the 3 rd heater 305 is arranged inside the evaporator cavity 301, and the 3 rd vacuum gauge 307 and the 3 rd temperature measuring device 306 are mounted on the top of the evaporator cavity 301.
The dirty oil-water vacuum separation equipment comprises an oil-water pre-separator 100, an oil-water separator 200, a vacuum evaporator 300, a vacuum pump 400 and a flow guide device 214. The 1 st water outlet 103 on the oil-water pre-separator 100 is communicated with the 2 nd input port 204 on the oil-water separator 200, the 1 st oil outlet 104 on the oil-water pre-separator 100 and the 2 nd oil outlet 205 on the oil-water separator 200 are respectively communicated with the 3 rd input port 302 on the vacuum evaporator 300; the 1 st pumping hole 105 of the oil-water pre-separator 100, the 2 nd pumping hole 212 of the oil-water separator 200 and the 3 rd pumping hole 303 of the vacuum evaporator 300 are respectively communicated with the input port of the vacuum pump 400. The vacuum pump 400 is used for respectively vacuumizing the oil-water preseparator 100, the oil-water separator 200 and the vacuum evaporator 300 so as to separate dirty oil and water under a vacuum condition. The flow guiding device 214 comprises an input part 2142 and an annular slow flow cavity 2141 which are sequentially communicated, wherein the input port of the input part 2142 is communicated with the input port 204 of the oil-water separator 200; the slow flow cavity 2141 is horizontally arranged, and is fitted inside the 1 st filter element 2021, on the top side of the 1 st filter element 2021. The oil-water preseparator 100 performs preseparation treatment on the dirty oil water to be treated, and removes part of dirty oil in the dirty oil water so as to reduce the oil content of the dirty oil water conveyed to the oil-water separator 200. The flow guide device 214 built in the oil-water separator 200 guides the flow direction of the transferred dirty oil water, and the dirty oil water flowing out of the flow guide portion 2143 of the flow guide device 214 flows out counterclockwise or clockwise to the 1 st filter element 2021, so that the flow directions of the dirty oil water are the same. The dirty oil that the flow direction is unanimous drives that 1 st filters the dirty oil drop of gathering on the core 2021 and flows along anticlockwise or clockwise, and dirty oil drop gathers into great dirty oil drop through the collision, promotes dirty oil drop come-up, helps in time to remove the dirty oil drop of gathering on the filter core, can improve the separation effect and the separation efficiency of 1 st filter core 2021. The inner wall of the 1 st filter element 2021 blocks the dirty oil water flowing out of the flow guide device 214, the dirty oil water generates centripetal acceleration, the flow direction of the dirty oil water changes, and the dirty oil water flows along the counterclockwise direction or the clockwise direction. Because the density of oil and water is different, the centripetal force difference is generated between the oil and the water, and the higher the flow speed of the waste oil is, the larger the centripetal force difference is. The centripetal force difference promotes dirty oil in the dirty oil to drip to the axial line side of the 1 st filter element 2021 to form a dirty oil area, and the dirty water flows to the inner wall side of the 1 st filter element 2021 to form the dirty water area; the oil and water can be pre-separated again from the dirty oil water to be filtered. Further, draft tube 2145 of draft gear 214 blocks the dirty profit water that flows out, changes the flow direction of dirty profit water, dirty profit water flows along anticlockwise or clockwise, because the inner diameter of draft tube is less and the inner wall is more smooth than the 1 st inner wall of filtering core 2021, the energy loss when dirty profit water flows in draft tube 2145 is littleer, dirty profit water has a higher velocity of flow, then the effect of pre-separating of dirty profit water is better, the oil content of the dirty profit water that the flow direction 1 st filters core 2021 is lower. Because the density of the sewage is greater than that of the dirty oil, the dirty oil in the dirty oil area moves upwards under the action of gravity and is collected into the oil collecting area at the upper part; the dirty oil in the dirty water area moves downwards, flows out from the lower end of the guide shell and flows to the No. 1 filter element 2021. The inward flanging at the lower end part of the guide cylinder forces partial dirty oil water flowing through the area to flow to the axis of the guide cylinder, so that the dirty oil in the dirty oil area gathered at the axis of the guide cylinder is promoted to float upwards, a flow field in which the liquid in the dirty oil area on the axis side of the guide cylinder floats upwards and the liquid in the dirty oil area on the peripheral side sinks downwards is formed, the secondary pre-separation treatment of the oil and the water of the dirty oil water flowing to the No. 1 filter element 2021 is favorably realized, the oil content of the dirty oil water is further reduced, and the filtering effect of the No. 1 filter element 2021 is improved. Therefore, the flow guiding device 214 built in the oil-water separator 200 helps the dirty oil droplets gathered on the 1 st filter element 2021 to float upwards in time, and pre-separates the oil and water from the dirty oil flowing to the 1 st filter element 2021 again, further reduces the oil content of the dirty oil water to be filtered, reduces the filtering load of the 1 st filter element 2021, and improves the separation effect and the separation efficiency of the oil-water separator 200. The vacuum pump 400 vacuumizes the oil-water separator 200, and performs oil-water separation treatment on the dirty oil water in a vacuum environment, so that the separation effect of oil and water in the dirty oil water is improved, and the content of dirty oil in the discharged water is further reduced. The vacuum evaporator 300 performs vacuum evaporation on the separated dirty oil under a vacuum condition, removes water in the dirty oil, reduces the water content of the discharged dirty oil, and improves the utilization value of the dirty oil.
Advantageous effects
The oil-water separation treatment is carried out under the vacuum condition, the separation efficiency of the separation equipment is high, the oil content of the discharged water is low, and the water content of the discharged dirty oil is low. The device is provided with an oil-water preseparator, an oil-water separator, a vacuum evaporator and a vacuum pump. The oil-water separation treatment is carried out under the vacuum condition, the oil-water pre-separator carries out pre-separation treatment on the dirty oil-water to be treated, and the oil content of the dirty oil-water conveyed to the oil-water separator is reduced. Built-in guiding device of oil water separator guides dirty profit along anticlockwise or clockwise flow direction to filter element, and the dirty profit of orderly dirty profit of flow drives the dirty oil droplet syntropy of gathering on the filter element and flows, and the dirty oil droplet gathers into bigger dirty oil droplet through the collision, promotes dirty oil droplet come-up, helps in time to remove the dirty oil droplet of gathering on the filter element. The dirty oil water flows along the anticlockwise direction or the clockwise direction, the densities of the oil and the water are different, the centripetal force difference is generated between the oil and the water, the oil-water separation in the dirty oil water is promoted, the dirty oil water is subjected to secondary pre-separation treatment, the oil content of the dirty oil water flowing into the filter element is further reduced, the filtering load of the filter element is reduced, the separation effect and the separation efficiency of the dirty oil-water separation equipment are improved, and the oil content of the water discharged by the separation equipment is reduced; the vacuum evaporator carries out vacuum evaporation treatment on the separated dirty oil, removes water in the dirty oil, reduces the water content in the discharged dirty oil, reduces the space occupied by storing the dirty oil, and improves the utilization value of the dirty oil.
Drawings
FIG. 1 is a schematic block diagram of a dirty oil water vacuum separation device.
FIG. 2 is a schematic diagram of the oil-water preseparator.
FIG. 3 is a schematic view of the oil-water separator.
Fig. 4 is a schematic structural view of a vacuum evaporator.
Fig. 5a front cross-sectional view of a deflector.
Fig. 6 is a top view of the deflector device of fig. 5.
FIG. 7 is a front cross-sectional view of another deflector device.
Fig. 8 is a sectional view of the deflector in fig. 7 taken along the line a-a.
Fig. 9 is a front cross-sectional view of yet another deflector.
In the figure, 100-oil-water pre-separator, 101-pre-separator shell, 102-1 st input port, 103-1 st drain port, 104-1 st oil drain port, 105-1 st suction port, 106-1 st heater, 107-1 st temperature measuring device, 108-1 st liquid level sensor, 109-1 st vacuum gauge, 110-1 st oil level detector, 200-oil-water separator, 201-shell, 202-filter core, 2021-1 st filter core, 2022-2 nd filter core, 2023-3 rd filter core, 203-baffle, 204-2 nd input port, 205-2 nd oil drain port, 205 a-2 nd oil drain port, 205 b-2 th oil drain port, 205 c-2 c oil drain port, 206-2 nd drain port, 207-2 nd oil level detector, 207 a-2 a oil level detection gauge, 207 b-2 b oil level detection gauge, 207 c-2 c oil level detection gauge, 208-2 nd heater, 2081-2 nd heater, 2082-2 nd heater, 209-2 nd temperature measuring device, 210-2 nd vacuum gauge, 211-water pump, 212-2 nd suction port, 213-2 nd liquid level sensor, 214-guiding device, 2141-slow flow cavity, 2142-input part, 2143-guiding part, 2144-guiding heater, 2145-guiding barrel, 2146-inner flange, 300-vacuum evaporator, 301-evaporator cavity, 302-3 rd input port, 303-3 rd suction port, 304-3 rd oil discharge port, 305-3 rd heater, 306-3 rd temperature measuring device, 307-3 rd vacuum gauge, 308-3 rd liquid level sensor, 400-vacuum pump, 500-oil mist filter.
Detailed Description
In order to clarify the technical solution and technical object of the present invention, the present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in figure 1, the dirty oil-water vacuum separation equipment comprises an oil-water pre-separator 100, an oil-water separator 200, a vacuum evaporator 300, a vacuum pump 400, a flow guide device 214, an oil storage tank, a dirty oil-water collecting tank and a controller. The controller is used for automatically controlling the separation equipment. The oil-water preseparator 100 is used for performing oil-water preseparation treatment on dirty oil water to be treated. The oil-water pre-separator 100 is provided with a 1 st suction opening 105 for vacuum pumping, a 1 st drain opening 103 for dirty oil water discharge, a 1 st oil drain opening 104 for dirty oil discharge, and a 1 st inlet opening 102 for inflow of dirty oil water to be treated. The outlet of the dirty oil water collecting box is communicated with the 1 st inlet 102. The oil-water separator 200 is used for performing oil-water separation treatment on the pre-separated dirty oil water. The oil-water separator 200 is provided with a 2 nd suction port 212 for vacuum suction, a 2 nd input port 204 for inflow of dirty oil water, and a 2 nd drain port 205 for drain of dirty oil. The 1 st drain port 103 communicates with the 2 nd input port 204. The vacuum evaporator 300 is used to reduce the water content in the separated dirty oil. The vacuum evaporator 300 is provided with a 3 rd suction port 303 for vacuum suction and a 3 rd input port 302 for dirty oil inflow. The 1 st oil drain port 104 and the 2 nd oil drain port 205 are respectively communicated with the 3 rd input port 302. The input port of the vacuum pump 400 is communicated with the 1 st pumping hole 105, the 2 nd pumping hole 212 and the 3 rd pumping hole 303 respectively. The oil-water separator 200 is provided with a filter element 202 therein, and the filter element 202 is mainly composed of a 1 st filter element 2021 for roughly filtering dirty oil water, and the 1 st filter element 2021 is cylindrical and vertically arranged. The flow guide device 214 is used to guide the flow of the dirty oil water flowing to the 1 st strainer 2021, and is installed inside the 1 st strainer 2021 and located on the top side of the 1 st strainer 2021. The flow guiding device 214 comprises an input portion 2142 for the inflow of the dirty oil water and a flow guiding portion 2143 for guiding the outflow direction of the dirty oil water, and the output ports of the flow guiding portion 2143 are distributed along the counterclockwise (or clockwise) direction, that is, along the same angular direction. The input portion 2142 is communicated with the 2 nd input port 204, and the dirty oil flows to the 1 st filter element 2021 through the flow guiding device 214. The flow guide device 214 guides the flow direction of the dirty oil water flowing into the oil-water separator 200, so that the dirty oil water flows out from the flow guide portion 2143 of the flow guide device 214 in the counterclockwise (or clockwise) direction and flows to the 1 st filter element 2021, and the flow directions of the dirty oil water are the same. The dirty oil that the flow direction is unanimous drives the dirty oil droplet of the gathering on the 1 st filter element 2021 to flow along anticlockwise (or clockwise) direction, and the dirty oil droplet gathers into great dirty oil droplet through the collision, and the buoyancy that the dirty oil droplet was dripped in the increase promotes dirty oil droplet come-up, helps in time to remove the dirty oil droplet of gathering on the 1 st filter element 2021, improves the separation effect and the separation efficiency of the 1 st filter element 2021. The vacuum pump 400 is used for respectively vacuumizing the oil-water preseparator 100, the oil-water separator 200 and the vacuum evaporator 300. The dirty oil-water pre-separation and oil-water separation operations are respectively carried out in a vacuum environment, which is beneficial to improving the oil-water separation efficiency and the oil-water separation effect, reducing the oil content of the discharged water of the separation equipment, reducing the energy consumption of dirty oil-water separation and reducing the cost of dirty oil-water separation treatment. The vacuum evaporator 300 performs a second vacuum evaporation process on the separated dirty oil, removes moisture in the dirty oil, reduces the space occupied by the dirty oil storage, and can improve the recycling value of the dirty oil. In order to reduce the influence of oil mist on the vacuum pump 400, the oil-water pre-separator 100, the oil-water separator 200, and the vacuum evaporator 300 are provided with a 1 st oil mist filter (not shown), a 2 nd oil mist filter 500, and a 3 rd oil mist filter (not shown) in sequence on a pipeline communicated with the vacuum pump 400.
As shown in fig. 2, the oil-water preseparator 100 includes a preseparator housing 101, a 1 st heater 106, a 1 st temperature measuring device 107, a 1 st liquid level sensor 108, a 1 st vacuum gauge 109, a 1 st oil level detecting gauge 110, and a plurality of plate-like baffle plates. The preseparator casing 101 is a cuboid sealed casing and is placed horizontally. The preseparator casing 101 is provided with a 1 st inlet 102, a 1 st drain 103, a 1 st drain 104, and a 1 st suction 105, respectively. Wherein, the 1 st input port 102 and the 1 st oil discharge port 104 are positioned at the left side part of the preseparator shell 101; the 1 st water discharge port 103 and the 1 st suction port 105 are located on the right side of the preseparator casing 101. The 1 st input port 102 of the oil-water pre-separator 100 is communicated with the output port of the dirty oil-water collecting box through a 1 st electromagnetic valve D1, and the 1 st oil discharge port 104 is communicated with the 3 rd input port 302 of the vacuum evaporator 300 through a 2 nd electromagnetic valve D2; the 1 st suction port 105 communicates in this order with the input port of the vacuum pump 400 via the 1 st oil mist filter, the 1 st suction valve DP 2. The baffles include the 1 st baffle GB1, the 2 nd baffle GB2 and the 3 rd baffle GB 3. The 1 st baffle GB1, the 2 nd baffle GB2 and the 3 rd baffle GB3 are vertically arranged and are sequentially assembled in the interior of the preseparator shell 101 and are distributed at intervals; the 1 st shutter GB1 is located on the left side of the preseparator casing 101, and the 3 rd shutter GB3 is located on the right side of the preseparator casing 101, that is, the 3 rd shutter GB3 is located on one end side of the 1 st drain port 103. The 1 st baffle GB1 is attached to the bottom wall, the front side wall and the rear side wall of the preseparator shell 101 respectively, and the height of the 1 st baffle GB1 is 1/6-1/5 of the height of the preseparator shell 101. A gap for flowing dirty oil is formed between the 2 nd baffle GB2 and the bottom wall of the pre-separator shell 101, the 2 nd baffle GB2 is attached to the front side wall and the rear side wall of the pre-separator shell 101, an interval for flowing dirty oil is formed between the upper end of the 2 nd baffle GB2 and the top wall of the pre-separator shell 101, and the lower end of the 2 nd baffle GB2 is higher than the upper end of the 1 st baffle GB 1. The bottom wall, the front side wall and the rear side wall of the 3 rd baffle GB3 and the preseparator shell 101 are respectively jointed, and the upper end part of the 3 rd baffle GB3 is lower than the upper end part of the 2 nd baffle GB2 and is used for the circulation of dirty oil water. The inner space of the preseparator shell 101 is divided into three areas by the 2 nd baffle GB2 and the 3 rd baffle GB3, and the three areas are a first preseparation area, a second preseparation area and a third preseparation area from left to right in sequence. The 1 st heater 106 is installed inside the first pre-separation region. The 1 st temperature measuring device 107, the 1 st liquid level sensor 108, the 1 st vacuum gauge 109 and the 1 st oil level detecting gauge 110 are respectively assembled on the top wall of the preseparator shell 101. The working principle of the oil-water preseparator 100 is as follows: when the temperature of the dirty oil water to be subjected to pre-separation treatment measured by the 1 st temperature measuring device 107 is lower than the set temperature, the 1 st heater 106 is started to heat the dirty oil water, the temperature of the dirty oil water reaches the set temperature range, the preliminary separation of the oil and the water of the dirty oil water is promoted, the oil content of the discharged water, namely the dirty oil water to be subjected to filtering separation treatment is reduced, and the filtering separation effect and efficiency are improved. When the dirty oil water in the first pre-separation area flows into the second pre-separation area, the 1 st baffle GB1 is used for preventing the impurities precipitated at the bottom of the first pre-separation area from being carried into the third pre-separation area by the flowing dirty oil water, so that the dirty oil water discharged from the third pre-separation area does not contain solid impurities, so as to prevent the impurities from blocking the filter element 205 in the oil-water separator 200, thereby affecting the normal operation of the oil-water separator 200, and being beneficial to prolonging the service life of the filter element.
As shown in fig. 3, the oil-water separator 200 includes a housing 201, a filter element 202, a partition plate 203, a 2 nd oil level detector 207, a 2 nd heater 208, a 2 nd temperature measuring device 209, a 2 nd vacuum gauge 210, a water pump 211, a 2 nd liquid level sensor 213, a 1 st electromagnetic three-way valve DT1, a 2 nd electromagnetic three-way valve DT2, a 2 nd oil mist filter 500, and a flow guide device 214. The water pump 211 adopts a plunger pump to reduce the emulsification of the water pump on the dirty oil in the sewage and improve the separation effect of the dirty oil and the water. The housing 201 is a cylindrical sealed housing formed by a bottom wall, a cylindrical side wall, and a top end cover, and is arranged upright, and the top end cover is an upwardly convex arch. The housing 201 is partitioned into a 1 st separation chamber a, a 2 nd separation chamber B, and a 3 rd separation chamber C by a plurality of partition plates 203. The 1 st separation chamber a is located at an upper portion of the casing 201, and the 2 nd separation chamber B and the 3 rd separation chamber C are located right below the 1 st separation chamber a. The lower part of the 1 st separation chamber A is communicated with the upper part of the 2 nd separation chamber B, and the lower part of the 3 rd separation chamber C is communicated with the lower part of the 2 nd separation chamber B. The filter element 202 includes a 1 st filter element 2021, a 2 nd filter element 2022 and a 3 rd filter element 2023. The 1 st filter element 2021 is cylindrical and has a cylindrical cavity therein for receiving the flow guide device 214. The 1 st filter element 2021 is assembled in the 1 st separation chamber a and is coaxial with the shell 201; the 2 nd filter element 2022 is assembled in the 2 nd separation chamber B, and the 3 rd filter element 2023 is assembled in the 3 rd separation chamber C. The 1 st filter element 2021 is made of oleophobic and hydrophilic fine fibers, and the 1 st filter element 2021 is used for performing coarse filtration on the dirty oil water to be filtered and treated to remove large-volume dirty oil droplets in the dirty oil water; the 2 nd filter element 2022 is made of super oleophobic and hydrophilic fine fiber, and the 2 nd filter element 2022 is used for finely filtering the dirty oil water discharged from the 1 st filter element 2021 to remove fine oil drops therein; the 3 rd filter element 2023 is composed of super oleophilic and hydrophobic superfine fiber and is used for adsorption filtration, the 3 rd filter element 2023 is used for fine filtration of the dirty oil water discharged from the 2 nd filter element 2022, and the superfine oil drops in the dirty oil water are removed by adsorption. And through three-stage filtration, the oil content of the discharged water of the separation equipment reaches the discharge standard. The upper part of the 1 st separating chamber A is provided with an oil collecting area which is positioned above the upper end surface of the 1 st filter element 2021, the upper end part of the 1 st separating chamber A is provided with a 2 nd oil outlet 205a and a 2 nd input port 204 for the inflow of dirty oil water to be treated, and the top end cover positioned above the 1 st separating chamber A is provided with a 2 nd air suction port 212 for vacuumizing the 1 st separating chamber A. The upper portion of the 2 nd separating chamber B is provided with an oil collecting region, and is provided with a 2 nd oil drain port 205B communicating with the oil collecting region. The top of the 3 rd separation chamber C is provided with a sump area for temporarily discharging the discharged water and a 2 nd drain 206 for discharging the discharged water, and is provided with an oil collecting chamber for temporarily storing dirty oil and a 2 nd drain 205C for discharging the dirty oil. The 2 nd drain port 205a, the 2 nd drain port 205b, and the 2c drain port 205c constitute a 2 nd drain port 205 in the casing 201. The 2 nd suction port 212 of the oil-water separator 200 communicates with the input port of the 2 nd oil mist filter 500, and the output port of the 2 nd oil mist filter 500 communicates with the input port of the vacuum pump 400 via the 2 nd suction valve DP 2. The 2 nd input port 204 of the oil-water separator 200 is communicated with the 1 st water outlet 103 of the oil-water pre-separator 100 through a 3 rd electromagnetic valve D3, the 2 nd oil drain port 205a is communicated with the 3 rd input port 302 of the vacuum evaporator 300 through a 4 th electromagnetic valve D4, the 2 nd oil drain port 205b is communicated with the 3 rd input port 302 of the vacuum evaporator 300 through a 5 th electromagnetic valve D5, and the 2c oil drain port 205c is communicated with the 3 rd input port 302 of the vacuum evaporator 300 through a 6 th electromagnetic valve D6. The 2 nd oil level detection gauge 207 includes a 2 nd oil level detection gauge 207a, a 2 nd oil level detection gauge 207b, and a 2c nd oil level detection gauge 207 c. The 1a oil level detection gauge 207a, the 2B oil level detection gauge 207B and the 2C oil level detection gauge 207C are fitted to the oil collection areas of the 1 st separation chamber a, the 2 nd separation chamber B and the 3 rd separation chamber C in this order, for detecting the oil levels of the respective oil collection areas. The oil level detection gauge 207 is a double-probe oil level detection gauge. The 2 nd temperature measuring device 209, the 2 nd liquid level sensor 213 and the 2 nd vacuum gauge 210 are respectively mounted on the top end cover of the housing 201. The flow guide 214 is fitted into the internal cavity of the 1 st cartridge 2021, on the upper end side of the 1 st cartridge 2021, with the top of the flow guide 214 being higher than the top of the 1 st cartridge 2021, as shown in fig. 3.
As shown in FIG. 4, the vacuum evaporator 300 includes an evaporator cavity 301, a 3 rd heater 305, a 3 rd temperature measuring device 306, a 3 rd vacuum gauge 307 and a 3 rd liquid level sensor 308. The evaporator cavity 301 is a cylindrical closed housing formed by a bottom wall, a cylindrical side wall, and a top end cap, which is in the shape of an upwardly convex arch. A 3 rd pumping hole 303 for pumping vacuum is arranged on the top end cover of the evaporator cavity 301; the side wall of the evaporator cavity 301 is respectively provided with a 3 rd oil drain port 304 for draining dry dirty oil and a 3 rd input port 302 for flowing in dirty oil to be evaporated. The 3 rd suction port 303 communicates with the input port of the vacuum pump 400 via the 3 rd oil mist filter and the 3 rd suction valve DP3, and the 3 rd discharge port 304 communicates with the oil reservoir via the 9 th electromagnetic valve D9. The 3 rd input port 302 is connected to the 2 nd oil drain port 205a of the oil-water separator via the 4 th solenoid valve, connected to the 2 nd oil drain port 205b of the oil-water separator via the 5 th solenoid valve D5, connected to the 2 nd oil drain port 205c of the oil-water separator via the 6 th solenoid valve D6, and connected to the 1 st oil drain port 104 of the oil-water pre-separator via the 2 nd solenoid valve D2. The 3 rd heater 305 is mounted inside the evaporator chamber 301. The 3 rd vacuum gauge 307, the 3 rd temperature measuring device 306 and the 3 rd liquid level sensor 308 are respectively assembled on the top end cover of the evaporator cavity 301. The working principle of the vacuum evaporator 300 is: dirty oil discharged from the oil-water preseparator 100 and the oil-water separator 200 is conveyed to the vacuum evaporator 300, the vacuum pump 400 vacuumizes the vacuum evaporator 300 to make the vacuum degree reach high vacuum of hundred Pa magnitude, namely, the pressure of several hundred Pa, and the boiling point of water is about several degrees at this time, so that the water in the dirty oil is promoted to evaporate rapidly, the water content in the discharged dirty oil is reduced, the recycling value of the dirty oil can be improved, and the space required by storing the dirty oil is reduced.
As shown in fig. 5-6, the flow guiding device 214 includes a buffer cavity 2141, an input portion 2142, a flow guiding portion 2143, a flow guiding heater 2144, a flow guiding cylinder 2145, a flow stabilizing plate 2147, and a temperature sensor. The slow flow cavity 2141 is a hollow annular shell formed by side walls, and a hollow cavity inside the slow flow cavity 2141 is used for dirty oil water to flow in the counterclockwise direction. The slow flow cavity 2141 is arranged in a horizontal plane direction, as shown in fig. 3 and 5, that is, the slow flow cavity 2141 is parallel to the horizontal plane. The cross section of the slow flow cavity 2141 is circular, so that the processing and manufacturing are convenient; it may also be square, oval or other shape. The input portion 2142 is a hollow pipe body with two open ends and formed by a side wall, and is used for guiding dirty oil water to be treated into the hollow cavity of the slow flow cavity 2141. An output port of the input portion 2142 communicates with the buffer chamber 2141 and is fixed to a side wall of the buffer chamber 2141, and an input port at the other end is adapted to communicate with a 2 nd input port 204 provided in the oil water separator 200. The output ports of the input portion 2142 are arranged in a counterclockwise direction (when viewed from top to bottom) around the axis of the buffer cavity 2141, and the output ports of the input portion 2142 are tangent to a cylindrical surface located there and coaxial with the buffer cavity 2141, that is, a tangent line to the axis of the output ports of the input portion 2142 is perpendicular to a major radius of the buffer cavity 2141 located there, as shown in fig. 5, that is, a tangent line to the axis of the output ports of the input portion 2142 is perpendicular to the plane of the paper, and the direction is toward the inside of the paper. The flow guide portion 2143 is a hollow shell formed by side walls and having two open ends, an input port portion of the flow guide portion 2143 is larger than an output port portion, and the cross section of the flow guide portion 2143 is circular, or may be square or elliptical. Preferably, the number of the flow guiding portions 2143 is 3, the output ports (i.e., the tangential direction of the axis at the output ports) of the 3 flow guiding portions 2143 are all arranged along the horizontal plane direction, the flow guiding portions 2143 are distributed around the axis of the buffer cavity 2141 at equal intervals, and are disposed on the outer side wall of the buffer cavity 2141, as shown in fig. 5 and 6, and the flow guiding portions 2143 are communicated with the buffer cavity 2141. 3 the delivery outlet of water conservancy diversion portion 2143 arranges along anticlockwise (from the top down), and the input port of water conservancy diversion portion 2143 communicates with this outside wall is tangent respectively for the regional smooth transition that water conservancy diversion portion 2143 and slow flow cavity 2141 are connected does not have the closed angle, with the resistance when reducing dirty profit from slow flow cavity 2141 to water conservancy diversion portion 2143 circulation, reduces the kinetic energy loss of the dirty profit of water outflow through water conservancy diversion portion 2143. The outlet of the flow guiding portion 2143 (i.e. the tangent line of the axis at the outlet) is tangent to the cylindrical surface located there and coaxial with the flow buffering cavity 2141. Therefore, the output port of the input portion 2142 and the output port of the flow guiding portion 2143 are both distributed along the counterclockwise direction, and can be understood as being both distributed along the same angular direction, so that the dirty oil water flowing in through the input portion 2142 flows along the counterclockwise direction in the buffer cavity 2141, and a part of the dirty oil water flowing to the flow guiding portion 2143 flows out through the flow guiding portion 2143, and the flowing dirty oil water also flows out along the counterclockwise direction, which is beneficial to reducing the kinetic energy offset loss generated by the dirty oil water due to different flow directions in the flowing process, so that the dirty oil water still has higher kinetic energy when flowing out from the flow guiding portion 2143. Therefore, the above arrangement of the input portion 2142 and the flow guide portion 2143 can be understood that the output ports of the input portion 2142 and the flow guide portion 2143 are distributed around the axis of the slow flow cavity 2141 in the same angular direction. The flow guide heater 2144 is an annular heating pipe matched with the inner cavity of the flow buffer cavity 2141, so that the kinetic energy loss of the dirty oil water caused by the flow guide heater is reduced. The flow guide heater 2144 is assembled inside the slow flow cavity 2141, close to the outer side, to improve the heat transfer effect and increase the heating efficiency. The detection head of the temperature sensor penetrates through the side wall of the slow flow cavity 2141 to extend into the interior of the slow flow cavity 2141, and is hermetically fixed on the side wall of the slow flow cavity 2141. The flow guide heater 2144 heats the dirty oil water conveyed into the flow buffer cavity 2141, the temperature of the dirty oil water rises, the viscosity of the dirty oil water is reduced, the viscous loss of the dirty oil water during flowing is reduced, the friction loss between the dirty oil water and the inner wall of the flow buffer cavity 2141 and the flow guide heater 2144 is reduced, the dirty oil water can keep higher kinetic energy when flowing along the anticlockwise direction in the flow buffer cavity 2141, the dirty oil water flowing out of the flow guide part 2143 has higher kinetic energy, and the oil-water pre-separation effect of the dirty oil water is favorably improved. The heating of the dirty oil water in the slow flow cavity 2141 is beneficial to demulsification of emulsified oil drops and promotes aggregation of small dirty oil drops in the dirty oil water into larger dirty oil drops. The guide cylinder 2145 is a bell-mouth-shaped hollow shell formed by side walls, and the shell is open at both ends, can be regarded as the side walls of a truncated cone, and is arranged vertically, as shown in fig. 3 and 5, that is, the axis of the shell is in the vertical direction. The diameter of the upper end of the guide cylinder 2145 is larger than that of the lower end of the guide cylinder 2145, an inward extending inward flange 2146 is arranged at the lower end of the guide cylinder 2145, and the inward flange 2146 circumferentially surrounds the circumference. The inner flange 2146 and the area circular arc transition connected with the lower end of the guide cylinder 2145 reduce the kinetic energy loss of the dirty oil water. The outer diameter of the slow flow cavity 2141 is smaller than the inner diameter of the upper end part of the guide cylinder 2145; the outer diameter of the guide cylinder 2145 is smaller than the inner diameter of the 1 st filter element 2021. The slow flow cavity 2141 is fitted to the upper end portion, i.e., the large end portion side, of the guide cylinder 2145, and fixed to the guide cylinder 2145; the flow slowing cavity 2141 is located inside the inner side surface of the flow guiding cylinder 2145, and the flow slowing cavity 2141 and the flow guiding cylinder 2145 are coaxial, that is, the output port of the flow guiding portion 2143 is located inside the flow guiding cylinder 2145. The flow guiding device 214 is assembled in the inner cavity of the 1 st filter element 2021, and is located at the upper side of the 1 st filter element 2021, and the upper end surface of the flow guiding device 214 is higher than the upper end surface of the 1 st filter element 2021. That is, the slow flow cavity 2141 is fitted inside the 1 st filter element 2021, on the top side of the 1 st filter element 2021; the guide cylinder 2145 is assembled between the slow flow cavity 2141 and the 1 st filter element 2021, and the upper end of the guide cylinder 2145 is higher than the upper end of the 1 st filter element 2021. The guide cylinder 2145 is used to stabilize the dirty oil water flowing out of the guide portion 2143 and enhance the oil-water pre-separation effect. The dirty oil water flowing out of the flow guide part 2143 generates centripetal acceleration under the blocking action of the flow guide cylinder, the flow direction of the dirty oil water is changed, and the dirty oil water flows in the flow guide cylinder along the anticlockwise direction; from top to bottom, the internal diameter of draft tube reduces gradually, makes the velocity of flow of dirty profit progressively increase from top to bottom, has higher velocity of flow, produces bigger centripetal acceleration promptly. Because the density of oil and water is different, a centripetal force difference is generated between the oil and the water in the guide cylinder, and the centripetal force difference is larger when the flow velocity of the waste oil is higher. The generated centripetal force difference is favorable for gathering sump oil drops gathered in the sump oil water to the axis of the guide cylinder to form a sump oil area; and sewage flows to the inner side wall surface of the guide shell to form a sewage area. Under the action of gravity, dirty oil water in the sewage area flows out from the lower end of the guide cylinder 2145 and flows along the anticlockwise direction, namely the flow direction of the dirty oil water flowing to the filter element is kept consistent, so that the dirty oil water with higher flow velocity is prevented from directly flowing to the filter element, accumulated dirty oil drops are broken, and the flowing-direction-disordered dirty oil water blocks oil collection floating on the filter element, and the filtering performance of the filter element is reduced. The flow stabilizing plate 2147 is a flat plate having a circular ring shape. The outer diameter of the flow stabilizing plate 2147 is smaller than the inner diameter of the upper end of the guide cylinder 2145, and the inner diameter thereof is smaller than the outer diameter of the slow flow cavity 2141 and larger than the inner diameter of the slow flow cavity 2141. The flow stabilizing plate 2147 is fitted to the upper end of the guide cylinder 2145 above the flow delaying chamber 2141. The outer circumferential side of the flow stabilizing plate 2147 is attached to the inner wall of the guide cylinder 2145, and the lower surface thereof is attached to the upper portion of the buffer chamber 2141. The flow stabilizing plate 2147 separates the dirty oil water flowing out of the flow guiding device 214 from the dirty oil in the upper oil collecting area, so that the part of the dirty oil water flowing upwards in the dirty oil water flowing out of the flow guiding portion 2143 is blocked by the flow stabilizing plate 2147, the dirty oil water flowing out of the flow guiding portion 2143 cannot flow upwards along the flow guiding barrel, the dirty oil flows into the oil collecting area in the upper portion, disturbance to the dirty oil in the upper oil collecting area cannot be generated, the dirty oil in the oil collecting area is prevented from being carried into the dirty oil water by the dirty oil water flowing out of the flow guiding portion 2143, and therefore the collection of the dirty oil and the separation effect of the dirty oil water are influenced. In addition, the output ports of the input portion 2142 and the output ports of the flow guide portion 2143 may be both distributed clockwise; in addition, one, two, or more than three flow guide portions 2143 may be provided, and may be selected as needed. The annular slow flow portion may be annular, or may be elliptical.
The effect of the flow guide 214 on the pre-separation of the effluent oil water flowing out through it is related to the number of flow guides 2143. When the other process parameters of the dirty oil-water separation are the same and the pre-separation effect is normalized, the relationship between the number of the flow guide portions 2143 and the pre-separation effect of the dirty oil-water is as shown in table 1 below.
Table 1:
Figure BDA0001158587150000111
as can be seen from the above table, the pre-separation effect is better when the number of the flow guiding portions 2143 of the flow guiding device 214 is 3, 4 or 5. In the practical application process, 3 or 4 flow guide parts can be adopted, so that the processing and the manufacturing are more convenient, the manufacturing cost of the flow guide device 214 is reduced, and meanwhile, the pre-separation effect is better.
In this embodiment, the flow guiding device 214 is still another embodiment, and the main difference from the above embodiment is that, as shown in fig. 7 to 8, a plurality of, for example, 3 flow guiding portions 2143 are disposed on the bottom wall of the slow flow cavity 2141. The outlets (i.e. the tangent to the axis at the outlet) of the flow guiding portions 2143 are arranged obliquely downward, i.e. the outlet of the flow guiding portion 2143 is lower than the inlet, and the angle between the outlet of the flow guiding portion 2143 and the horizontal plane is 1-10 degrees, preferably 3 degrees. The output port of the flow guide part 2143 is arranged obliquely downwards, dirty oil water flowing out of the output port of the flow guide part 2143 has a partial flow velocity along the circumferential direction and a partial flow velocity along the axial direction of the flow guide cylinder 2145 downwards, the flowing dirty oil water rotates downwards in the flow guide cylinder 2145 along the spiral line direction under the blocking constraint of the flow guide cylinder 2145, flows out of the lower end part of the flow guide cylinder 2145 and flows to the 1 st filter element. The dirty oil gathered at the axis of the flow guiding device 214 is easier to float upwards, so that the pre-separation effect of the dirty oil water flowing to the second filter element 2021 is better, the oil content in the dirty oil water flowing to the filter element is lower, and the separation effect and the separation efficiency of the dirty oil water separation equipment are further improved.
It should be noted that the flow guiding portion 2143 may also be disposed on the inner sidewall of the slow flow cavity 2141. The inner diameter of the stabilizing plate 2147 is smaller than the inner diameter of the slow flow cavity 2141. The flow stabilizing plate 2147 is assembled to the upper end of the flow guiding cylinder 2145, located above the flow delaying cavity 2141, and attached to the flow delaying cavity 2141, as shown in fig. 9. The dirty profit that water conservancy diversion portion 2143 delivery outlet flows is blockked by the inside wall of unhurried current chamber 2141, and dirty profit flows along counter-clockwise or clockwise to the filter core that flows to, can avoid from the higher dirty profit of the velocity of flow that water conservancy diversion portion 2143 flows directly to flow to the filter core, the dirty oil drop that the breakage has gathered to and flow to the disorderly dirty profit and hinder the collection oil come-up on the filter core, reduce the filtering quality who filters the core.
The 2 nd heater 208 includes a 2a th heater 2081 and a 2b th heater 2082. The 2 a-th heater 2081 is used to heat the 2 a-th oil level detection gauge 207a, the 2 a-th heater 2081 is a cylindrical spiral line, is mounted on the top of the oil-water separator 200, and is located outside the detection head of the 2 a-th oil level detection gauge 107a, and the spiral 2 a-th heater 2081 covers the detection head of the 2 a-th oil level detection gauge 207 a. The purpose of the 2a heater 2081 is mainly to reduce the sticking of dirty oil to the surface of the 2a oil level detection gauge 207a, so as to ensure the accuracy and sensitivity of the 2a oil level detection gauge 207a for oil level detection in the oil collection area of the 1 st separation chamber a. The 2b heater 2082 is assembled in the 1 st separating chamber a of the housing 201, is located inside the 1 st filter element 2021, and is used for heating the dirty oil water to be filtered and separated, reducing the viscosity of the dirty oil water, and improving the effect of filtering and separating the dirty oil water. It should be noted that heaters (not shown) for heating the respective regions where the 2 b-th oil level detection gauge 207b and the 2 c-th oil level detection gauge 207c are located may be provided.
The 2a oil discharge port 205a of the oil-water separator 200 is communicated with the oil storage tank through the 4 th electromagnetic valve D4 and the 1 st connection port of the four-way pipe to form a first oil discharge pipeline, the 2b oil discharge port 205b is communicated with the oil storage tank through the 5 th electromagnetic valve D5 and the 2 nd connection port of the four-way pipe to form a second oil discharge pipeline, and the 2c oil discharge port 205c is communicated with the oil storage tank through the 6 th electromagnetic valve D6 and the 3 rd connection port of the four-way pipe to form a three-way oil discharge pipeline. The 2 nd drain port 206 of the oil-water separator 200, the two connection ports of the 1 st three-way solenoid valve DT1, the water pump 211, the two connection ports of the 2 nd three-way solenoid valve DT2, and the 8 th solenoid valve D8 are sequentially connected to each other, and a drain line is formed when the 1 st three-way solenoid valve DT1 and the 2 nd three-way solenoid valve DT2 are de-energized. The other connection port of the 1 st electromagnetic three-way valve DT1 is communicated with a storage tank of backwashing water, the other connection port of the 2 nd electromagnetic three-way valve DT2 is communicated with the 2 nd water outlet 206, and when the 1 st electromagnetic three-way valve DT1 and the 2 nd electromagnetic three-way valve DT2 are electrified, a backwashing pipeline is formed and used for conveying the backwashing water to the oil-water separator 200 and backwashing the oil-water separator 200, so that the blockage of a filter element is avoided, and the service life of the filter element is prolonged. A connection port for drain of the 2 nd solenoid three-way valve DT2 is connected to the 2 nd input port 204 via the 7 th solenoid valve D7, and a sampling valve V2 is provided in the connected line to constitute a re-separation line for performing a re-separation process on the drain water, and the drain water that has failed the sampling test is input into the oil-water separator 200 to be subjected to the re-separation process. The sampling valve V2 is provided between a connection port for drain of the 2 nd electromagnetic three-way valve DT2 and the 7 th electromagnetic valve D7. The sampling valve V2 is used for sampling and detecting the discharged water of the oil-water separator 200, and when the oil content of the discharged water of the oil-water separator 200 is higher than the standard, the discharged water is input into the oil-water separator 200 for oil-water separation treatment again; when the oil content of the discharged water reaches the standard, the discharge is performed by the 8 th solenoid valve D8. The 2 nd liquid level sensor 213 detects the height of the liquid level in the oil-water separator 200, the liquid level height detected by the 2 nd liquid level sensor 213 is compared with the preset value of the liquid level height, when the detected liquid level height reaches the preset value of the liquid level height, the 3 rd electromagnetic valve D3 is powered off, and the oil-water separator 200 is stopped from conveying the dirty oil water to be treated, so that the situation that the liquid level of the dirty oil water is too high and the dirty oil water is sucked by the vacuum pump 400 is avoided, and the normal work of the oil-water separation equipment is influenced. The 1 st to 8 th electromagnetic valves are normally closed when power is lost, and communication is blocked. When the 1 st electromagnetic three-way valve DT1 and the 2 nd electromagnetic three-way valve DT2 lose power, the drainage pipelines are communicated and drain water outwards; when the 1 st electromagnetic three-way valve DT1 and the 2 nd electromagnetic three-way valve DT2 are energized, the backwashing pipeline is communicated to perform backwashing operation on the oil-water separator 200.
The working principle of the separation equipment of the invention is as follows: the vacuum pump 400 vacuumizes the oil-water pre-separator 100, the 1 st electromagnetic valve D1 is electrically connected, dirty oil water in the dirty oil-water collecting tank is sucked into the oil-water pre-separator 100, the oil-water pre-separator 100 performs pre-separation treatment on dirty oil water to be separated, partial dirty oil and solid impurities in the dirty oil water to be treated are removed, and the oil content of the discharged dirty oil water is reduced. The dirty oil water discharged from the oil-water preseparator 100 is input to the dirty oil-water separator 200. The dirty oil water supplied to the oil-water separator 200 flows into the buffer chamber 2141 of the flow guide device 214 through the 2 nd input port 204 and the input portion 2142 of the flow guide device 214, and the dirty oil water flows in the buffer chamber 2141 in the counterclockwise direction. When the temperature of the dirty oil water detected by the temperature sensor is lower than a set value, the flow guide heater 2144 is started to heat the dirty oil water in the slow flow cavity 2141, the temperature of the dirty oil water rises, the viscosity of the dirty oil water is reduced, the viscous loss of the dirty oil water during flowing is reduced, the friction loss between the dirty oil water and the inner wall of the slow flow cavity 2141 is reduced, the dirty oil water keeps high kinetic energy when flowing in the slow flow cavity 2141, and the dirty oil water flowing out of the flow guide part 2143 has high kinetic energy. After the dirty oil water in the slow flow cavity 2141 is heated, the emulsified dirty oil drops in the dirty oil water can be promoted to gather, and the dirty oil water pre-separation effect is improved. The dirty oil water flowing out of the flow guide portion 2143 generates a centripetal acceleration under the blocking action of the flow guide cylinder 2145, and the dirty oil water flows in the flow guide cylinder 2145 in the counterclockwise direction. Because the densities of the oil and the water are different, the centripetal accelerations of the oil and the water at the same position are the same, a centripetal force difference is generated between the oil and the water, the centripetal force difference enables dirty oil drops in the dirty oil to gather to the side of the axis of the guide cylinder 2145 to form a dirty oil area, and the dirty water flows to the side of the inner wall surface of the guide cylinder 2145 to form a dirty water area. Under the action of gravity, the sewage with higher density in the sewage area flows out from the lower end part of the guide cylinder 2145 and flows to the 1 st filter element 2021, and the sewage oil with lower density in the sewage oil area flows upwards and floats upwards and is gathered into the oil collecting area at the upper part of the 1 st separation chamber A. The greater the flow velocity of the dirty oil water flowing out of the guide portion 2143, the greater the speed of the dirty oil water flowing in the counterclockwise direction in the guide cylinder 2145, the better the separation effect of the pre-separation of oil and water in the dirty oil water, and the lower the oil content in the dirty oil water flowing out of the lower end of the guide cylinder 2145. The inward flange 1146 at the lower end of the guide cylinder 2145 promotes part of dirty oil water in the dirty oil water flowing out from the lower end of the guide cylinder 2145 to flow inward along the radial direction, the part of the dirty oil water flowing inward is collected at the center of the lower end of the guide cylinder, one part of the dirty oil water flows out downward, the other part of the dirty oil water flows upward, and the upward flowing dirty oil water promotes the dirty oil accumulated at the axis in the guide cylinder 2145 to float upward and flow into the oil collecting area at the upper part, so that the oil content of the dirty oil water flowing to the No. 1 filter element 2021 is reduced, and the filtering efficiency of the No. 1 filter element is improved. Dirty oil water on the input side of the 1 st filter element 2021 flows along the counterclockwise direction along with dirty oil water in the guide cylinder 2145 to drive dirty oil drops gathered on the inner surface of the 1 st filter element 2021 to move, so that smaller dirty oil drops collide with each other and coalesce into larger dirty oil drops, the dirty oil drops on the 1 st filter element are promoted to float upwards, the collected oil on the input side surface of the 1 st filter element 2021 is removed in time, and the filtering effect and the filtering efficiency of the 1 st filter element 2021 are enhanced. The dirty oil water flowing out of the 1 st filter element 2021 flows into the 2 nd separation chamber B, and is subjected to oil-water separation by the 2 nd filter element 2022; the dirty oil water flowing out from the 2 nd filter element 1022 flows into the 3 rd filter chamber C, the 3 rd filter element 2023 adsorbs and filters the dirty oil water flowing into the chamber, ultra-fine dirty oil droplets in the dirty oil water are filtered, and the drain water flowing out from the 3 rd filter element 2023 is discharged through the 2 nd drain outlet 206. A water sample of the discharge water discharged from the 2 nd water discharge port 206 is obtained by the sampling valve V2, and the oil content of the water sample is detected. When the oil content of the discharged water reaches the discharge standard, if the oil content is less than 15ppm, the 8 th solenoid valve D8 is powered on and is connected, and the 7 th solenoid valve D7 is powered off and is blocked, at this time, the water pump 211 pumps the discharged water separated by the oil-water separator 200 out and discharges the water through the 8 th solenoid valve D8, because the discharged water in the oil-water separator 200 is discharged and the vacuum pump is vacuumized, the internal pressure becomes negative pressure, and when the 3 rd solenoid valve D3 is powered on, the dirty oil water in the oil-water pre-separator is sucked into the oil-water separator 200 through a pipeline; when the oil content of the discharged water does not reach the discharge standard, the separated discharged water is sent to the oil-water separator 200 again for oil-water separation treatment, at this time, the 8 th electromagnetic valve D8 and the 3 rd electromagnetic valve D3 are blocked by losing electricity, and the 7 th electromagnetic valve D7 is electrically connected, the discharged water flowing out of the 2 nd water outlet 206 in the oil-water separator 200 is sent to the 2 nd input port 204, flows into the oil-water separator 200 through the 2 nd input port 204, flows into the diversion device 214, and is subjected to oil-water separation again until the discharged water meets the discharge requirement. When the oil-water separator 200 performs dirty oil-water separation, when the temperature of the dirty oil-water measured by the 2 nd temperature measuring device 209 and the temperature sensor is lower than a set temperature, the 2 nd heater 208 and the flow guide heater 2144 are respectively started to heat the dirty oil-water, so that the viscosity of the dirty oil-water is reduced, the collection of the dirty oil is accelerated, the separation effect is improved, and the separation time is shortened. Meanwhile, the area where the 2a oil level detection gauge 207a is located is heated individually to reduce the dirty oil that sticks to the 2a oil level detection gauge 207a, ensuring the accuracy and sensitivity of the 2a oil level detection gauge 207a in oil level detection. When the detection signal of the 1 st oil level detecting gauge 110 indicates an oil discharge signal, the 2 nd solenoid valve D2 is operated to be electrically connected to discharge oil to the vacuum evaporator 300; when the detection signal of the 2 nd oil level detection gauge 207a indicates an oil discharge signal, the 4 th solenoid valve D4 is operated to be electrically connected to discharge oil to the vacuum evaporator 300; when the detection signal of the 2 b-th oil level detection gauge 207b indicates an oil discharge signal, the 5 th solenoid valve D5 is operated to be electrically connected to discharge oil to the vacuum evaporator 300; when the detection signal of the 2 c-th oil level detection gauge 207c indicates an oil discharge signal, the 6 th solenoid valve D6 is operated to be electrically connected to discharge oil to the vacuum evaporator 300. Dirty oil discharged from the oil-water preseparator 100 and the oil-water separator 200 is conveyed to the vacuum evaporator 300, the vacuum pump 400 vacuumizes the vacuum evaporator 300 to make the vacuum degree reach high vacuum of hundred Pa magnitude, namely, the pressure of several hundred Pa, and the boiling point of water is about several degrees at this time, so that the water in the dirty oil is promoted to evaporate rapidly, the water content in the discharged oil is reduced, the recycling value of the dirty oil can be improved, and the space required by storing the dirty oil is reduced. When the oil-water separator 200 needs to be subjected to backwashing, the 1 st electromagnetic three-way valve DT1 and the 2 nd electromagnetic three-way valve DT2 are operated to be electrified, backwashing pipelines are communicated, backwashing water is sucked by the water pump 211 and pumped to the 2 nd water outlet 206 of the oil-water separator 200, the backwashing water is injected into the oil-water separator 200 through the 2 nd water outlet 206, backwashing treatment is sequentially performed on the 3 rd separating chamber C, the 2 nd separating chamber B and the 1 st separating chamber a, the filter element blockage is avoided, and the oil-water separator keeps better separating effect and separating efficiency.
The separation equipment comprises an oil-water preseparator 100, an oil-water separator 200, a vacuum evaporator 300, a vacuum pump 400 and a flow guide device 214. The 1 st water outlet 103 on the oil-water pre-separator 100 is communicated with the 2 nd input port 204 on the oil-water separator 200, the 1 st oil outlet 104 on the oil-water pre-separator 100 and the 2 nd oil outlet 205 on the oil-water separator 200 are respectively communicated with the 3 rd input port 302 on the vacuum evaporator 300; the 1 st pumping hole 105 of the oil-water pre-separator 100, the 2 nd pumping hole 212 of the oil-water separator 200 and the 3 rd pumping hole 303 of the vacuum evaporator 300 are respectively communicated with the input port of the vacuum pump 400. The vacuum pump 400 is used for respectively vacuumizing the oil-water preseparator 100, the oil-water separator 200 and the vacuum evaporator 300 so as to separate dirty oil and water under a vacuum condition. The flow guiding device 214 comprises an input part 2142 and an annular slow flow cavity 2141 which are sequentially communicated, wherein the input port of the input part 2142 is communicated with the input port 204 of the oil-water separator 200; the slow flow cavity 2141 is horizontally arranged, and is fitted inside the 1 st filter element 2021, on the top side of the 1 st filter element 2021. The oil-water preseparator 100 performs preseparation treatment on the dirty oil-water to be treated, and removes partial dirty oil and solid impurities in the dirty oil-water so as to reduce the oil content of the dirty oil-water conveyed to the oil-water separator 200. The flow guide device 214 built in the oil-water separator 200 guides the flow direction of the transferred dirty oil water, and the dirty oil water flowing out of the flow guide portion 2143 of the flow guide device 214 flows out counterclockwise or clockwise to the 1 st filter element 2021, so that the flow directions of the dirty oil water are the same. The dirty oil that the flow direction is unanimous drives that 1 st filters the dirty oil drop of gathering on the core 2021 and flows along anticlockwise or clockwise, and dirty oil drop gathers into great dirty oil drop through the collision, promotes dirty oil drop come-up, helps in time to remove the dirty oil drop of gathering on the filter core, can improve the separation effect and the separation efficiency of 1 st filter core 2021. The inner wall of the 1 st filter element 2021 blocks the dirty oil water flowing out of the flow guide device 214, the dirty oil water generates centripetal acceleration, the flow direction of the dirty oil water changes, and the dirty oil water flows along the counterclockwise direction or the clockwise direction. Because the density of oil and water is different, the centripetal force difference is generated between the oil and the water, and the higher the flow speed of the waste oil is, the larger the centripetal force difference is. The centripetal force difference promotes dirty oil in the dirty oil to drip to the axial line side of the 1 st filter element 2021 to form a dirty oil area, and the dirty water flows to the inner wall side of the 1 st filter element to form a dirty water area; the oil and water can be pre-separated again from the dirty oil water to be filtered. The draft tube 2145 of the draft device 214 blocks the dirty oil water that flows out, changes the flow direction of the dirty oil water, and the dirty oil water flows along the anticlockwise or clockwise direction, because the inner diameter of the draft tube is less and the inner wall is smoother than the inner wall of the 1 st filter element 2021, the energy loss when the dirty oil water flows in the draft tube 2145 is less, the dirty oil water has a higher flow velocity, and the oil-water pre-separation effect is better. Because the density of the sewage is greater than that of the dirty oil, under the action of gravity, the dirty oil in the dirty oil area moves upwards and is collected into the oil collecting area at the upper part, and the dirty oil in the dirty oil area moves downwards and flows out from the lower end part of the guide cylinder to the No. 1 filter element 2021. The inward flanging at the lower end part of the guide cylinder forces partial dirty oil water flowing through the area to flow to the axis of the guide cylinder, so that the dirty oil in a dirty oil area gathered at the axis of the guide cylinder is promoted to float upwards, a flow field in which liquid in the dirty oil area on the axis side of the guide cylinder floats upwards and liquid in the dirty oil area on the peripheral side sinks downwards is formed, the dirty oil water flowing to the No. 1 filter element 2021 is subjected to oil and water secondary pre-separation treatment, the oil content of the dirty oil water is further reduced, and the filtering effect of the No. 1 filter element 2021 is improved. Therefore, the flow guiding device 214 built in the oil-water separator 200 helps the dirty oil droplets gathered on the 1 st filter element 2021 to float upwards in time, and pre-separates the oil and water from the dirty oil flowing to the 1 st filter element 2021 again, further reduces the oil content of the dirty oil water to be filtered, reduces the filtering load of the 1 st filter element 2021, and improves the separation effect and the separation efficiency of the oil-water separator 200. The vacuum pump 400 vacuumizes the oil-water separator 200, and performs oil-water separation treatment on the dirty oil water in a vacuum environment, so that the separation effect of oil and water in the dirty oil water is improved, and the content of dirty oil in the discharged water is further reduced. The vacuum evaporator 300 performs vacuum evaporation on the separated dirty oil under a vacuum condition, removes moisture in the dirty oil, reduces the water content of the discharged dirty oil, reduces the space occupied by storing the dirty oil, and improves the utilization value of the dirty oil
Compared with the prior art, the invention has the following technical effects:
the oil-water separation is carried out under the vacuum condition, the separation efficiency of the separation equipment is high, the oil content of the discharged water is low, and the water content of the discharged dirty oil is low. The device is provided with an oil-water preseparator, an oil-water separator, a vacuum evaporator and a vacuum pump. The oil-water separation treatment is carried out under the vacuum condition, the oil-water pre-separator carries out pre-separation treatment on the dirty oil-water to be treated, and the oil content of the dirty oil-water conveyed to the oil-water separator is reduced. Built-in guiding device of oil water separator guides dirty profit along anticlockwise or clockwise flow direction to filter element, and the dirty profit of orderly dirty profit of flow drives the dirty oil droplet syntropy of gathering on the filter element and flows, and the dirty oil droplet gathers into bigger dirty oil droplet through the collision, promotes dirty oil droplet come-up, in time removes the dirty oil droplet of gathering on the filter element. The dirty oil water flows along the anticlockwise direction or the clockwise direction, the densities of the oil and the water are different, centripetal force difference is generated between the oil and the water, oil-water separation in the dirty oil water is promoted, secondary pre-separation treatment on the dirty oil water is realized, the oil content of the dirty oil water flowing to the filter element is further reduced, the filtering load of the filter element is reduced, the separation effect and the separation efficiency of dirty oil-water separation equipment are improved, and the oil content of water discharged by the separation equipment is reduced; the vacuum evaporator carries out vacuum evaporation treatment on the separated dirty oil, removes water in the dirty oil, reduces the water content in the discharged dirty oil, reduces the space occupied by storing the dirty oil, and improves the utilization value of the dirty oil.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the foregoing description only for the purpose of illustrating the principles of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, specification, and equivalents thereof.

Claims (9)

1. The utility model provides a dirty water oil vacuum separation equipment which characterized in that includes:
the oil-water pre-separator (100) is used for performing oil-water pre-separation treatment on dirty oil-water to be treated, and is provided with a 1 st air suction port (105) for vacuumizing, a 1 st water discharge port (103) for discharging the dirty oil-water and a 1 st oil discharge port (104) for discharging the dirty oil;
the oil-water separator (200) is used for carrying out oil-water separation treatment on the pre-separated dirty oil water, and is provided with a 2 nd pumping hole (212) for vacuumizing, a 2 nd input hole (204) for inflow of the dirty oil water and a 2 nd oil discharge hole (205) for discharging the dirty oil; the 1 st water outlet (103) is communicated with the 2 nd input port (204); the oil-water separator (200) is internally provided with a filter core (202), the filter core (202) mainly comprises a 1 st filter core (2021) for roughly filtering dirty oil water, and the 1 st filter core (2021) is cylindrical and vertically arranged;
the flow guiding device (214) is used for guiding the flow direction of the dirty oil water flowing to the 1 st filter element (2021); the flow guide device (214) comprises a slow flow cavity (2141), a flow guide cylinder (2145), an input part (2142) for inflow of dirty oil water and a flow guide part (2143) for guiding outflow direction of the dirty oil water, wherein the slow flow cavity (2141) is an annular hollow cavity formed by side walls and is arranged along the horizontal plane direction; the output port of the input part (2142) and the input port of the flow guide part (2143) are respectively communicated with the slow flow cavity (2141), the flow guide part (2143) is distributed around the axis of the slow flow cavity (2141), the output ports of the flow guide part (2143) are distributed along the same angular direction, are positioned on the outer side wall of the slow flow cavity (2141), and are circumferentially arranged along the anticlockwise direction or the clockwise direction; the guide cylinder (2145) is a bell-mouthed hollow shell formed by side walls, and the diameter of the upper end part of the guide cylinder (2145) is larger than that of the lower end part; the outer diameter of the guide cylinder (2145) is smaller than the inner diameter of the No. 1 filter element (2021); the guide flow cylinder (2145) is assembled inside the No. 1 filter element (2021), and the upper end part of the guide flow cylinder (2145) is higher than that of the No. 1 filter element (2021); the slow flow cavity (2141) is assembled in the guide cylinder (2145) and is positioned at the upper end part of the guide cylinder (2145); the input part (2142) is communicated with the 2 nd input port (204);
a vacuum evaporator (300) for reducing the water content in the separated dirty oil, on which a 3 rd suction port (303) for vacuum suction and a 3 rd input port (302) for inflow of dirty oil are provided; the 1 st oil drain port (104) and the 2 nd oil drain port (205) are respectively communicated with the 3 rd input port (302);
the input port of the vacuum pump (400) is respectively communicated with the 1 st pumping hole (102), the 2 nd pumping hole (212) and the 3 rd pumping hole (303).
2. The dirty water vacuum separation apparatus of claim 1, wherein: an output port of the input part (2142) and an input port of the flow guide part (2143) are respectively communicated with the side wall of the slow flow cavity (2141) in a tangent mode, and the distribution angle directions of the output port of the input part (2142) and the output port of the flow guide part (2143) are consistent; preferably, the flow guide part (2143) is arranged obliquely downwards, and an included angle between an output port of the flow guide part (2143) and the horizontal plane is 1-10 degrees.
3. The dirty oil water vacuum separation apparatus according to claim 1 or 2, wherein: the flow guide device (214) further comprises a flow guide cylinder (2145) which is formed by side walls and is in a bell mouth shape; the outer diameter of the guide flow cylinder (2145) is smaller than the inner diameter of the No. 1 filter element (2021), and the upper end part of the guide flow cylinder (2145) is larger than the lower end part; the guide cylinder (2145) is assembled between the slow flow cavity (2141) and the No. 1 filter element (2021), and the upper end part of the guide cylinder (2145) is higher than that of the No. 1 filter element (2021).
4. The dirty water vacuum separation apparatus of claim 3, wherein: the lower end part of the guide cylinder (2145) is provided with an inward extending inward flange (2146).
5. The dirty oil water vacuum separation apparatus of claim 4, wherein: the water conservancy diversion device (214) is still including being annular current stabilizer (2147), and current stabilizer (2147) are assembled in draft tube (2145) upper end, are located the top in slow current chamber (2141), the outer circumference avris of current stabilizer (2147) and the laminating of the inner wall of draft tube (2145), lower surface and the laminating of slow current chamber (2141).
6. The dirty water vacuum separation apparatus of claim 5, wherein: the flow guide device (214) further comprises a flow guide heater (2144) which is annular and matched with the slow flow cavity (2141) and used for heating the input dirty oil water, and the flow guide heater (2144) is assembled inside the slow flow cavity (2141).
7. The dirty water vacuum separation apparatus of claim 1, wherein: the oil-water separator (200) is internally provided with a 1 st separation chamber (A), a 2 nd separation chamber (B) and a 3 rd separator (C) which are communicated in sequence, and the 2 nd separation chamber (B) and the 3 rd separator (C) are positioned below the 1 st separation chamber (A); the filter element (202) also comprises a 2 nd filter element (2022) for fine filtration and a 3 rd filter element (2023) for adsorption filtration; the 1 st filter element (2021), the 2 nd filter element (2022) and the 3 rd filter element (2023) are sequentially assembled in the 1 st separation chamber (A), the 2 nd separation chamber (B) and the 3 rd separator (C).
8. The dirty oil water vacuum separation apparatus according to claim 1 or 7, wherein: the oil-water pre-separator (100) is internally provided with a 1 st baffle (GB1), a 2 nd baffle (GB2) and a 3 rd baffle (GB3) which are vertically arranged at intervals in sequence, and the 3 rd baffle (GB3) is positioned at one end part side of the 1 st water outlet (103); the 1 st baffle (GB1) is attached to the bottom wall, the front side wall and the rear side wall of the oil-water pre-separator (100); a gap for flowing dirty oil and water is arranged between the No. 2 baffle (GB2) and the bottom wall of the oil-water pre-separator (100), the No. 2 baffle (GB2) is attached to the front side wall and the rear side wall of the oil-water pre-separator (100), and the lower end part of the No. 2 baffle (GB2) is higher than the upper end part of the No. 1 baffle (GB 1); the 3 rd baffle (GB3) is attached to the bottom wall, the front side wall and the rear side wall of the oil-water pre-separator (100), and the upper end part of the 3 rd baffle (GB3) is lower than the upper end part of the 2 nd baffle (GB 2).
9. The dirty water vacuum separation apparatus of claim 8, wherein: the vacuum evaporator (300) comprises a closed evaporator cavity (301), a 3 rd heater (305), a 3 rd temperature measuring device (306) and a 3 rd vacuum gauge (307), wherein the top of the evaporator cavity (301) is provided with a 3 rd pumping hole (303) for vacuum pumping, the 3 rd heater (305) is arranged inside the evaporator cavity (301), and the 3 rd vacuum gauge (307) and the 3 rd temperature measuring device (306) are assembled at the top of the evaporator cavity (301).
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