CN2772594Y - Multi-stage circulating-current finned oil and water separator with vertical jet - Google Patents

Abstract

The utility model provides a vertical jet multi stage ring flow airfoil sheet type oil and water separator. The utility model comprises a water inlet device and an oil and water separator, wherein a water inlet pipe in the water inlet device is connected with a self-absorption sewage pump, a machine adding tank is connected with the water inlet pipe, a water outlet of the self-absorption sewage pump is connected with a jet gas dissolving pipe, a check valve, a water quantity regulating valve and a flowmeter are arranged between the self-absorption sewage pump and the jet gas dissolving pipe, the oil and water separator is provided with a multi stage ring airfoil sheet, a gas and water releaser, an oil collecting groove, a residue removing pipe and an oil outlet pipe, a water outlet pipe hole leads out the oil and water separator through a pipeline and upwards extends to be positioned on the same horizontal plane with an oil and water separation plane, and the jet gas dissolving pipe is in pipe connected with the gas and water releaser. The utility model has the advantages of full automatic operation, no need of management, small occupation area, low operating cost of equipment, good processing effect and little energy consumption, and is suitable for various processing of oily sewage, particularly the sewage processing of catering industry.

Description

The vertical multi-stage circulating tab style oil water separator that sprays

Technical field

The utility model relates to a kind of oily-water seperating equipment, is meant a kind of vertical injection multi-stage circulating tab style oil water separator that is applicable to diet service trade especially.

Background technology

Along with the rise of China's tertiary industry, the raising day by day of living standards of the people, the city diet service trade develops rapidly.It enriches the people's material and cultural life aspect in the prosperity urban and rural economies, has brought into play positive effect.Thereupon, also serious day by day by the catering oily wastewater of the sector generation to the pollution of environment.Because the food and restaurant service industry multidigit is in business district, city or residential quarter, pollution sources are many and disperse, and are difficult to centralized collection handle, and had a strong impact on the healthy and environmental sanitation of surrounding resident.

The generation of catering trade oil-polluted water is owing to use a large amount of animal oil and vegetable oil in cooking process, these greases are cooked stir-fry, high temperature frying rear section through heating and are entered food, and scrub tableware, oil cauldron and outwell Residual oil and the process of the odds and ends of a meal in, sanitary sewage is mixed into sewer and forms between a large amount of greases and kitchen.Animal and plant fat is a multicomponent alkyl fatty acid organic mixture, and COD, BOD value height have certain colourity and smell, and inflammable, easy oxidation Decomposition is generally all light than water, is insoluble in water.The vegetable and animals oils that contains in the sewage has certain smell and color and luster, and its main harm is embodied in the following aspects:

1) load of increase municipal sewage plant.When oil-polluted water enters the municipal sewage plant, because grease than difficult degradation, will consume 3-4mg oxygen during the 1mg Oxidation of Fat and Oils, not only influence the treatment effeciency of sewage treatment plant, and can increase its processing load.

2) influence the urban drainage pipe network discharge capacity.Grease in the catering trade institute sewer condenses in inner-walls of duct easily, forms thick oil layer (particularly in the winter time), the pipeline discharge capacity is reduced, even block.The clear and coherent very difficulty of the pipeline that grease stops up, even wash away also of no avail with high temperature alkaline solution.

3) worsen water quality, harm aquatic resources.After the water of cleaning was polluted by oily waste water, COD, BOD value raise, and oil film prevention oxygen dissolves in the water, made the water quality anoxic and stench causes the biological death in the water body.When containing oil in the water body when the 0.01mg/L, will make the flesh of fish have the oil flavor and influence edible.

4) be detrimental to health.In oils and its catabolite, exist many noxious materials.These materials by aquatile picked-up, absorption, enrichment, cause the aquatile distortion in water body.If advance people's human body, will be detrimental to health by food chain.

5) influence crop growth.If it is used for dirty irritate then destroying soil texture, makes soil oil materialization.Oils adheres to plant root can be influenced it nutrient absorbing is caused the underproduction or death, also can finally be detrimental to health by plant absorbing, enrichment.

6) atmosphere pollution.In the city of not setting up the municipal sewage plant, in a single day oil-polluted water enters water body, and vegetable and animals oils is just kept afloat with the oil film form, under various natural cause influences, the volatilization of wherein a part of component and catabolite enters atmosphere, pollutes and poisons the overhead and atmospheric environment on every side of water body.Because the effect of diffusion and wind-force can make pollution range enlarge.

7) in addition, because the effect of infiltration, oil-polluted water may also can influence phreatic water quality.

The expert is carrying out a large amount of research work aspect the improvement of oil-polluted water both at home and abroad, and has obtained certain effect, and these achievements have obtained using widely.Using more deoiling method is physics oil removal process and physical chemistry oil removal process, as flocculation treatment method and coarse method etc.Also work out advanced technologies such as chemical demulsification method, biochemical process, electrochemical process in addition in succession, but the processing object of these technology is hydrocarbon petroleum mostly.Because the physics and the chemical characteristic of hydrocarbon petroleum and alkyl fatty acid grease have bigger difference, thereby existing degreasing technique is very low to the clearance of alkyl fatty acid grease.

In order to prevent and treat the pollution of catering trade vegetable and animals oils; State Bueau of Environmental Protection and National Administration for Industry and Commerce emphasize that in " about strengthening the notice of catering service enterprise Environmental Management " [No. (1995) 100, ring prison] " sewage enters the catering service enterprise of urban sewage pipe network; oil interceptor should be installed or take other treatment measures, reaches local urban sewage pipe network water inlet standard.The residue of its generation, refuse must not enter sewer ".Therefore, research catering trade oil-polluted water degreasing technique is developed the catering trade oil-polluted water degreasing unit that is suitable for " on the spot " processing and is had certain realistic meaning.

The utility model content

The distribution that is directed to China's catering trade is wide, the feature that sewage quantity disperses, relative discharge is less, administrative staff's technical merit is relatively poor, the actual conditions that kitchen space and position are very nervous, the purpose of this utility model are to provide a kind of have fully automatic operation, Unsupervised, floor space is little, the equipment operating cost is low, treatment effect good, energy consumption is low a kind of vertical injection multi-stage circulating tab style oil water separator.

The purpose of this utility model is achieved in that a kind of vertical injection multi-stage circulating tab style oil water separator, comprise water feed apparatus and oil water separator, wherein: described water feed apparatus by water inlet pipe, self-suction sewage pump, add explosive barrel and the injecting dissolve gas pipe is formed, water inlet pipe is connected with the water inlet of self-suction sewage pump, add to manage between explosive barrel and the water inlet pipe and be connected, the delivery port of self-suction sewage pump is connected with the injecting dissolve gas pipe; On the connecting line between self-suction sewage pump and the injecting dissolve gas pipe, be provided with check-valves, water regulating valve and flowmeter successively; The injecting dissolve gas pipe is provided with air intake duct; Described oil water separator is a closed container, the middle part is provided with the multi-stage circulating fin within it, have the air water release at the multi-stage circulating fin, top one side is provided with oil drain out, be provided with effluent pipe mouth below the air water release, effluent pipe mouth is drawn oil water separator by pipeline and is extended upwardly to water-oil separating face and is in same horizontal plane; Be provided with scum pipe in the oil water separator bottom or closely; Oil drain out is connected with flowline; The injecting dissolve gas pipe discharges organ pipe with air water and is connected.

Water inlet pipe described in the utility model is provided with into water negative-pressure balancing valve; On the pipeline that adds between explosive barrel and the water inlet pipe, be provided with dosing flow-control and indicator.

Air intake duct described in the utility model is provided with both air flow modulation and indicator.

Oil water separator top described in the utility model is provided with rotary oil-scraping device, is provided with electric heater outside oil trap.

The utility model also can be realized like this: the delivery port of described oil water separator and the water inlet pipe connection of valveless water filter device automatically, described automatic valveless water filter device comprises sealing shell, the bottom is provided with Rose Box in the enclosure, be provided with the siphon tedge at the Rose Box top, the siphon tedge siphon down-comer outer with being arranged on shell is communicated with; The lower end of siphon down-comer is provided with water sealed tank; Water inlet is by being connected to the end of water inlet pipe with U type trap down, and the other end of U type trap is connected with siphon tedge bottom, is provided with the emptying scum pipe at outer casing bottom or nearly bottom; The middle part is filtered water tank, is provided with clear water output in the shell; Be provided with exhaust tube and siphon destructing tube at siphon down-comer top, between siphon tedge top and exhaust tube, be provided with auxiliary siphon tube.

Rose Box described in the utility model is by housing, and the quartz sand filter media layer that is arranged in the housing constitutes with the quartz sand supporting network that is arranged on housing bottom.

The utility model compared with prior art has following advantage owing to adopt said structure:

1) adopted the structure of vertical stream to handle, the more traditional equipment of the occupation of land of equipment dwindles greatly, is fit to kitchen space and uses than crowded places.

2) the multi-stage circulating tab style is handled structure, and the space of water-oil separating is concentrated greatly, and the efficient of water-oil separating improves 5-10 doubly.

3) multistage fin and the divergence expression deflector that adopts lipophile modification material to make; not only form good shallow-layer separating effect; and play coarse effect to dissolved oil after the emulsification; can effectively separate the various oil contents in the sewage, changing traditional oil water separator only has separating effect oil emulsion and dissolved oil not to be had the deficiency of separating effect to oil droplet.

4) adopt the negative pressure swabbing action Automatic Dosing that utilizes pump before the pump, it is stable to add dose, simple and convenient management.

5) adopted jet pipe (Venturi tube) to carry out liquid-gas jet, realized effective molten gas effect, and formed the gas liquid mixture of desirable microbubble, utilized release, gone up, formed desirable multi-stage circulating, realized good three phase separation effect to release.

6) adopt the mode frizing of rotation oil scraping plate, with on float to the timely remover apparatus of the dregs of fat of liquid level.

7) equipment is after having adopted degree of depth quartz sand filtration technology, can realize that vegetable and animals oils reaches in the effluent quality index " composite wastewater discharge standard " (GB8978-1996) first discharge standard, main contamination index such as COD wherein, BOD, SS also can reach " composite wastewater discharge standard " (GB8978-1996) above discharge standard of secondary.Satisfy the not too strict surrounding enviroment of water quality emission request or the discharge index requirement in villages and small towns.

8) quartz sand filtration is ad hoc counts automatic valveless water filter device, can realize full automatic filtration and backwash, according to the specific drainage pressure of filtrate, when the specific drainage pressure of filtrate increased to a certain degree, mechanically activated backwashing system was realized automatic backwash, after backwash finishes, recover again to filter.Because be the backwash of mechanism physical start-up, not only reduce the loaded down with trivial details of control, avoid simultaneously keeping in repair loaded down with trivial details because of electric-controlled system fault causes and can't turn round.

Description of drawings

Below in conjunction with the specific embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is the structural representation that the utility model does not have automatic valveless water filter device;

Fig. 2 is the structural representation that the utility model has automatic valveless water filter device;

Fig. 3 is the plane of one of circulation fin in the utility model;

Fig. 4 is the A-A profile of Fig. 3;

Fig. 5 is two a plane of circulation fin in the utility model;

Fig. 6 is the B-B profile of Fig. 5;

Fig. 7 is three a plane of circulation fin in the utility model;

Fig. 8 is the C-C profile of Fig. 7;

Fig. 9 is the combining structure schematic diagram of circulation fin in the utility model;

Figure 10 is that automatic valveless water filter device filters view in the utility model;

Figure 11 is an automatic valveless water filter device backwash view in the utility model.

The specific embodiment

As shown in Fig. 1, Fig. 3 to Fig. 9, vertical injection multi-stage circulating tab style oil water separator of the present utility model, comprise water feed apparatus 1 and oil water separator 2, water feed apparatus 1 by water inlet pipe 101, self-suction sewage pump 106, add explosive barrel 105 and injecting dissolve gas pipe 110 is formed, water inlet pipe 101 is connected with the water inlet of self-suction sewage pump 106, add to manage between explosive barrel 105 and the water inlet pipe 101 and be connected, on water inlet pipe 101, be provided with into water negative-pressure balancing valve 102; On the pipeline that adds between explosive barrel 105 and the water inlet pipe 101, be provided with dosing flow-control and indicator 104.The delivery port of self-suction sewage pump 106 is connected with injecting dissolve gas pipe 110 pipes, is provided with check-valves 107, water regulating valve 108 and flowmeter 109 on the connecting line between self-suction sewage pump 106 and the injecting dissolve gas pipe 110 successively; Injecting dissolve gas pipe 110 is provided with air intake duct 111, is provided with both air flow modulation and indicator 112 on air intake duct 111.Oil water separator 2 is a closed container, the middle part is provided with multi-stage circulating fin 114 within it, have air water release 113 at multi-stage circulating fin 114, top one side is provided with oil trap 117, be provided with effluent pipe mouth 115 below air water release 113, effluent pipe mouth 115 is drawn oil water separator 2 and is extended upwardly to water-oil separating face by pipeline and is in same horizontal plane; Be provided with scum pipe 120 in oil water separator 2 bottoms or bottom near; Oil water separator 2 tops are provided with rotary oil-scraping device 116, and oil trap 117 is provided with flowline 118; In oil trap 117, be provided with electric heater 119.Injecting dissolve gas pipe 110 is connected with air water release 113 pipes.

The utility model is realized the separating technology of oil, water, slag, sees also shown in Fig. 1, and its separating process is mainly finished by following step:

1. intake, advance medicine

Sewage is bled and castering action by self-suction sewage pump 106, enters treatment system.Self-suction sewage pump 106 by the negative pressure swabbing action, passes through dosing mouth 103 suction with the medicament (oil removing flocculant) in the explosive barrel 105 when extracting sewage.Medicament and sewage are mixed fully through the high speed rotation of self-suction sewage pump 106, and flocculation reaction takes place.The speed of dosing jointly controls by dosing adjusting and indicator 104 and the negative-pressure balancing valve 102 of intaking, and guarantees the stable of dosing.The inflow of sewage jointly controls by water regulating valve 108 and flowmeter 109.

2. injecting dissolve gas

Sewage enters injecting dissolve gas pipe 110 by the flow of setting after self-suction sewage pump 106 promotes pressurization.Injecting dissolve gas pipe 110 is actually a liquid-gas jet pump structure, it is that jet by liquid aspirates, compresses and mix gas, its inside belongs to the liquid-gas two-phase flow motion, and owing to the unit weight difference between the liquids and gases is very big, therefore the situation of motion is very complicated.According to the liquid-gas jet pump operation principle, roughly be divided into three sections processes:

(1) liquid jet and gas relative motion section.The liquid jet that penetrates from nozzle is closely knit, because the viscous effect between jet boundary layer and the gas, jet is brought gas into trunnion, the two relative motion of liquid gas, and be continuous media.Liquid jet behind distance nozzle one segment distance, produces pulsation and surface wave owing to be subjected to the influence of external disturbance, and its vibration frequency is 3000-4000Hz;

(2) liquid drop movement section.Because the turbulent fluctuation diffusion of liquid particle, jet surface wave amplitude constantly increases, and when amplitude during greater than the jet radius, liquid is sheared and disperses to form drop.The drop of high-speed motion is dispersed in the gas, and he and gas molecule impact and collision, and energy is transferred to gas, and gas is accelerated and compresses.Liquid becomes discontinuous media in this section, and gas still is continuous media.

(3) foam motor segment.Gas is pulverized by drop and is micro-bubble, and drop regroups into liquid, and bubble then is dispersed in and forms foam stream in the liquid.Along with the kinetic energy by the anemostat mixed liquor is converted to pressure energy, pressure raises, and gas is further compressed.This moment, liquid was continuous media, and gas becomes decentralized medium.Because the ratio of heat capacities gas of liquid is big, so gas is compressed in constant temperature process.

By the effect of injecting dissolve gas, form good liquid gas mixture, bubble wherein is a microbubble.

3. go up to spraying and discharge

The high pressure gas-water mixture that injecting dissolve gas forms is delivered to air water release 113 through piping, and sudden contraction and dilating effect through discharging upwards spray the centre bore of gas-water mixture from fin, form the upward flow at center.

4. oil, water, slag three phase separation

Oil, water, slag three phase separation are finished in multi-stage circulating fin 114.The jet-action of air water release 113 and the buoyancy of gas, form the high speed upward flow of center, the effect of upward flow causes the fin center negative pressure to occur, and the pressure of neighboring area strengthens relatively, therefore, the liquid of periphery to center flow, forms multi-stage circulating by the slit between fin and the effect of deflector.In the multi-stage circulating process, the mixture of profit slag flows in the very little fin slit of spacing, because the fin spacing is very little, adds the effect of baffle upper plate, forms the static advection effect between fin, realizes the shunting of profit slag.Oil floats to the lower surface of fin, forms oil film, is removed, and slag is deposited to the upper surface of fin, and the gravity effect is deposited to the bottom, leaves tab area, is able to effective separation.After air water release 113 injection streams formed, the oil droplet in the sewage was carried into liquid level by microbubble.Emulsification in the sewage and dissolved oil fully contact with the lipophile fin during by multi-stage circulating fin 114, and oil is adsorbed on flap surface by the surface tension of fin and electrical function, form oil film, under buoyancy function, on float to liquid level, removed.Residue in the sewage under the gravity effect, during through the multi-stage circulating district, is deposited in top (shiny surface) of fin, and along surface gradient (＞45 °) bottom that glides, forms mud.Fin has two kinds of specifications, and a kind of is to be the plane fully, and the space is whole one by one shallow-layer plane between the fin after the assembling.Another is the fin of band flow deflector, and the fin gap after the assembling is made up of parallel rectangular hole one by one, forms desirable honeycomb effect and coarse effect.

5. draining

The effluent pipe mouth 115 of water outlet after oil, water, the slag shunting through being arranged on the middle and lower part collected, got rid of.Because drainpipe in the middle and lower part, need be provided with liquid level regulation device, be mainly used to liquid level and oily interface in the balancing equipment.

6. oil extraction

Emulsification in the sewage and dissolved oil, by the effect of lipophile fin, form oil film and oil droplet, original oil droplet is together in the sewage, adsorbed by microbubble by capillary effect, and be carried into liquid level, form oil reservoir, because of oil content proportion light than water, so on floating on the surface, by the effect of oil scraping plate 116, oil is scraped to oil trap 117, and discharged by oil exit pipe 118.For the lower area of temperature, because the low temperature vegetable and animals oils easily condenses into piece, therefore, need to start electric heater 119, keep the constant temperature in oil reservoir zone, make oil noncondensing.

7. deslagging

Slag in the sewage through separating postprecipitation to the bottom, is regularly opened the valve deslagging on the scum pipe 120.

As shown in Fig. 2, Figure 10, the utility model is on the basis of such scheme, delivery port at oil water separator 2 connects with water inlet 201 pipes of an automatic valveless water filter device 3, automatically valveless water filter device 3 comprises sealing shell 30, the bottom is provided with Rose Box 204 in shell 30, Rose Box 204 is by housing 216, and the quartz sand filter media layer 205 that is arranged in the housing 216 constitutes with the quartz sand supporting network 206 that is arranged on housing 216 bottoms.Be provided with siphon tedge 210 at Rose Box 204 tops, siphon tedge 210 is communicated with shell 30 siphon down-comer 211 outward; The lower end of siphon down-comer 211 is provided with water sealed tank 215; Water inlet 201 is by being connected to the end of water inlet pipe 202 with U type trap 203 down, and the other end of U type trap 203 is connected with siphon tedge 210 bottoms, is provided with emptying/scum pipe 207 in shell 30 bottoms or bottom near; The middle part is filtered water tank 208, is provided with clear water output 209 in the shell 30; Be provided with exhaust tube 213 and siphon destructing tube 214 at siphon down-comer 211 tops, between siphon tedge 210 tops and exhaust tube 213, be provided with auxiliary siphon tube 212.Can reach higher water quality emission request.

As shown in Figure 10, automatic valveless water filter device 3 of the present utility model is when normal filtration, and the water outlet after oil water separator 2 is handled is entered down to water inlet pipe 202 by water inlet pipe 201, behind U-shaped pipe 203, enter Rose Box 204, sewage passes through quartz sand filtering layer 205 from the top down.From Rose Box 204 bottom water outlets, to the upper reaches,, after liquid level reaches L2, flow out in the slit of filtered water tank 208 and Rose Box 204 outer walls from clear water delivery port 209 through behind the filtered water tank 288.During normal filtration, Li is lower than L1, and the resistance of quartz sand filter media layer 205 is less than L1-L2.As shown in Figure 11, automatic valveless water filter device 3 of the present utility model is along with constantly carrying out of filtering, and receiving of quartz sand filter media layer 205 is dirty more and more, the resistance of quartz sand filter media layer is greater than L1-L2, Li rises to liquid level L1 place, and water flows out from auxiliary siphon tube 212, enters the backwash starting state.After liquid level Li is higher than L1, water flows out from auxiliary siphon tube 212, water flows into water sealed tank 215 fast downwards, because the quick jet-action of water, at exhaust tube 213 and auxiliary siphon tube 212 intersections, form negative pressure, air in the suction backwash pipeline 210,211 is along with constantly carrying out of swabbing action, negative pressure constantly increases in the pipeline, and the liquid level of siphon tedge 210 and siphon down-comer 211 all constantly rises.And finally join at peak, siphonage forms, because the liquid level of tank 215 is well below liquid level Lo, clear water is from filtered water tank 208, enter Rose Box 204 through quartz sand supporting network 206 and quartz sand filtering layer 205, and drain into tank 215 by siphon tedge 210 and siphon down-comer 211.Because water enters from the bottom of Rose Box 204, the pressure reduction of water is big, and the resistance of ducting is little, therefore, forms strong developing result, and quartz sand filtering layer 205 is effectively washed.After flushing a period of time, Lo constantly reduces, and when being reduced to L3, air enters siphon pipe from siphon destructing tube 214, and siphonage is destroyed, recovers normal filtration.Because quartz sand filtering layer 205 has obtained effective cleaning, resistance force diminishes can normal filtration.After being filled into quartz sand filtering layer 205 resistances and increasing to a certain degree, start backwash once more automatically.

Claims (6)

1. one kind is vertically sprayed multi-stage circulating tab style oil water separator, comprise water feed apparatus (1) and oil water separator (2), it is characterized in that: described water feed apparatus (1) by water inlet pipe (101), self-suction sewage pump (106), add explosive barrel (105) and injecting dissolve gas pipe (110) is formed, water inlet pipe (101) is connected with the water inlet of self-suction sewage pump (106), add to manage between explosive barrel (105) and the water inlet pipe (101) and be connected, the delivery port of self-suction sewage pump (106) is connected with injecting dissolve gas pipe (110) pipe; On the connecting line between self-suction sewage pump (106) and the injecting dissolve gas pipe (110), be provided with water regulating valve (108) successively; Injecting dissolve gas pipe (110) is provided with air intake duct (111); Described oil water separator (2) is a closed container, the middle part is provided with multi-stage circulating fin (114) within it, have air water release (113) at multi-stage circulating fin (114), top one side is provided with the oil extraction mouth of pipe (117), be provided with effluent pipe mouth (115) in air water release (113) below, the water outlet after effluent pipe mouth (115) will be handled by pipeline is drawn oil water separator (2) and is extended upwardly to water-oil separating face and is in same horizontal plane; Be provided with scum pipe (120) in oil water separator (2) bottom or closely; Injecting dissolve gas pipe (110) is connected with air water release (113) pipe.

2. vertical injection multi-stage circulating tab style oil water separator according to claim 1, it is characterized in that: described water inlet pipe (101) is provided with into water negative-pressure balancing valve (102); On the pipeline that adds between explosive barrel (105) and the water inlet pipe (101), be provided with dosing flow-control and indicator (104).

3. vertical injection multi-stage circulating tab style oil water separator according to claim 1, it is characterized in that: described air intake duct (111) is provided with both air flow modulation and indicator (112).

4. vertical injection multi-stage circulating tab style oil water separator according to claim 1, it is characterized in that: described oil water separator (2) top is provided with rotary oil-scraping device (116), is provided with electric heater (119) outside oil trap (117).

5. according to the arbitrary described vertical injection multi-stage circulating tab style oil water separator of claim 1 to 4, it is characterized in that: the delivery port of described oil water separator (2) and water inlet (201) the pipe connection of valveless water filter device (3) automatically, described automatic valveless water filter device (3) comprises sealing shell (30), the bottom is provided with Rose Box (204) in shell (30), be provided with siphon tedge (210) at Rose Box (204) top, siphon tedge (210) is communicated with shell (30) siphon down-comer (211) outward; The lower end of siphon down-comer (211) is provided with water sealed tank (215); Water inlet (201) is by being connected to the end of water inlet pipe (202) with U type trap (203) down, and the other end of U type trap (203) is connected with siphon tedge (210) bottom, is provided with emptying/scum pipe (207) in shell (30) bottom or closely; The middle part is filtered water tank (208), is provided with clear water output (209) in the shell (30); Be provided with exhaust tube (213) and siphon destructing tube (214) at siphon down-comer (211) top, between siphon tedge (210) top and exhaust tube (213), be provided with auxiliary siphon tube (212).

6. vertical injection multi-stage circulating tab style oil water separator according to claim 5, it is characterized in that: described Rose Box (204) is by housing (216), is arranged on the quartz sand filter media layer (205) in the housing (216) and is arranged on quartz sand supporting network (206) formation of housing (216) bottom.

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