CN103432771A - Automatic dehydration apparatus and method for waste oil - Google Patents
Automatic dehydration apparatus and method for waste oil Download PDFInfo
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- CN103432771A CN103432771A CN2013102944465A CN201310294446A CN103432771A CN 103432771 A CN103432771 A CN 103432771A CN 2013102944465 A CN2013102944465 A CN 2013102944465A CN 201310294446 A CN201310294446 A CN 201310294446A CN 103432771 A CN103432771 A CN 103432771A
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Abstract
The invention discloses an automatic dehydration apparatus and method for waste oil. According to the invention, a third solenoid valve and a second oil pump are arranged on an oil-conveying pipe located between a dehydration tank and a dehydrated waste oil storage tank, a first solenoid valve and a first oil pump are arranged on an oil-conveying pipe located between the dehydration tank and a raw waste oil storage tank, and the solenoid valves and the oil pumps are all connected with an embedded controller; when the first solenoid valve is opened and the first oil pump works, waste oil in the raw waste oil storage tank is injected into the dehydration tank, and the waste oil downwardly spirals to a throttle valve at a lower part along the inner surface of the wall of the raw waste oil storage tank through a bent oil pipe in an angle of 360 DEG, flows out through the throttle valve and is then injected into the dehydration tank at different angles through a plurality of through holes; after deposition of the raw waste oil in the dehydration tank for a period of time, an oil level detector is used to detect an interface. With the apparatus and method provided by the invention, a distance between an oil level and a water level is strictly controlled, an oil-water mixed layer maintains certain thickness all the time, artificial intervention is not needed, and automatic dehydration is realized.
Description
Technical field
The present invention relates to a kind of waste oil treatment facility, relate in particular to a kind of waste oil automatic dewatering unit and control method.
Background technology
Contain a large amount of calorific values in the waste oil waste oil, fuel can produce a large amount of heats as an alternative.The waste oil waste oil is converted into to fuel, not only can effectively saves the energy, and effective environmental contamination reduction.But the waste oil water content is high, up to more than 40 percent, must be after dehydration fuel as an alternative.And oilcan dehydration all adopts manually-operated at present, the separation of profit can't strictly be controlled, the oil content in draining is higher, and this not only causes the waste of oil product, has also polluted environment.
Chinese Patent Application No. is 03117169.9, the patent documentation that name is called " a kind of automatic control float valve oily-water seperating equipment " discloses a kind of oily-water seperating equipment, by buoyancy device or ball float, water-pressure sealed plug and discharge outlet form the automatic control float valve, oily waste water enters from the top of device, ball float is subject to the variation of water inlet position in device, fluctuating to control pulls the water-pressure sealed plug to move up and down, automatically regulate size or sealing that discharge outlet is opened, isolated water is discharged from bottom of device, isolated waste oil floating account is in device, when isolated oil slick is deposited collection while reaching the fuel outlet valve height, emitting waste oil from fuel outlet valve reclaims, realize dingus, the Non-energy-consumption automatic control separating treatment of large wastewater flow rate.But there is following shortcoming in this oily-water seperating equipment: the first, and oily waste water directly enters from the device top, and powerful impulsive force makes the emulsification of oily water serious, has also thickeied oil water surface, thereby has strengthened the difficulty of follow-up water-oil separating simultaneously; The second, this bottom of device facility that do not remove the gred, in oil tank, greasy filth, the bits of long-term precipitation can not be got rid of in time, affect the operation of whole device; The 3rd, this oily-water seperating equipment does not have the instrument corollary equipment, and construction machine is simple, ball float surface use half a year after oil reservoir too many, increased ball float weight, can't tracking and monitoring, reliable working operation is poor.
Summary of the invention
The objective of the invention is in order to overcome the weak point of background technology, provide a kind of and reduce costs, save the energy, environmental contamination reduction, waste oil automatic dewatering unit that operational reliability is high, the present invention also provides the automatic dehydration method of this waste oil automatic dewatering unit simultaneously, can the fuel-displaced water stratification of fast detecting, utilize oil pump etc. to realize the waste oil automatic dehydration.
For achieving the above object, the technical scheme that waste oil automatic dewatering unit of the present invention adopts is: comprise drain sump, former waste oil holding vessel and dehydration waste oil holding vessel, the drain sump tank deck connects dehydration waste oil holding vessel by petroleum pipeline, on the petroleum pipeline between drain sump and dehydration waste oil holding vessel, the 3rd magnetic valve and the second oil pump are set, drain sump tank skin outer surface has oil-in, oil-in connects former waste oil holding vessel by petroleum pipeline, on the petroleum pipeline between drain sump and former waste oil holding vessel, the first magnetic valve and the first oil pump is set; Being positioned at drain sump inside has the flexure type oil pipe, and the flexure type oil pipe becomes 360 scales to revolve along the drain sump inner wall surface, and flexure type oil pipe upper end connects oil-in, lower end connects choke valve, and the flexure type oil pipe is provided with several through holes towards different directions; Form upper strata oil reservoir, middle profit mixed layer and lower aqueous layer after precipitation at the former waste oil in drain sump, there are two oil level detection meters fixedly to be located at a and the b place on the drain sump inwall, the a place is positioned at the interface place of oil reservoir and oil mixing with water layer, the b place is positioned at the interface place of oil mixing with water layer and water layer, and two oil level detection meters are electrically connected to respectively with the embedded controller that is positioned at drain sump 1 outside; Under at the bottom of the drain sump tank, slag-drip opening is arranged, the slag-drip opening place arranges hand-operated valve, connects the greasy filth tank under slag-drip opening, and the slag-drip opening side arranges discharge outlet, and the discharge outlet place arranges the second magnetic valve; Each magnetic valve all is connected embedded controller with each oil pump.
The technical scheme that the automatic dehydration method of waste oil automatic dewatering unit of the present invention adopts is: according to the following steps: A, embedded controller controls the first magnetic valve are opened and the first operation of oil pump, waste oil in former waste oil holding vessel injects drain sump, by the flexure type oil pipe, along the tank skin inner surface, become 360 degree to spiral to the choke valve of lower end downwards and flow out, and be different angles by some through holes and be ejected in drain sump; B, when former trench oil liquid level reaches on oil reservoir liquid level c place, close the first magnetic valve and the first oil pump, former waste oil through precipitation after a while, detects interface by the oil level detection meter in drain sump; C, when the oil level detection meter detects the oil reservoir liquid level lower than a place, embedded controller sends signal and opens the first magnetic valve, the first oil pump and the 3rd magnetic valve, the second oil pump, the dehydration waste oil is stored in the second oil pump is extracted into dehydration waste oil holding vessel, when the oil level detection meter detects the oil reservoir liquid level and reaches a place, close the first magnetic valve, the first oil pump and the 3rd magnetic valve, the second oil pump; The oil level detection meter at b place detects the interface of oil mixing with water layer and water layer, when the water layer liquid level being detected over b, open the second magnetic valve and the first magnetic valve, the first oil pump, unnecessary water is discharged from discharge outlet, when the detection water layer falls back to the b place, close the second magnetic valve and the first magnetic valve, the first oil pump, realize automatic dehydration.
The present invention compares with technology with existing method, has following advantage:
1, the present invention can strictly control the distance between oil reservoir and water layer, make the oil mixing with water layer maintain all the time certain thickness, in conjunction with the application that detects controller, make dehydration reach the purpose of automation, do not need manual intervention, but simple in structure, stable work in work, safe and reliable long period automatic dehydration.
2, the present invention produces emulsification in order at utmost to reduce oily water, improve oil-water separation, oil inlet pipe adopts 360 degree to turn round the metal tube that spirals, and has bored some through holes at whole full circle swinging pipeline inner ring surface, while allowing waste oil come in, is rotated around being cushioned.
3, the present invention adds detection technique and embedded Control, breaks away from mechanical dehydration device, and it is highly sensitive, failure rate is low, dehydrating effect are good.
4, the present invention holds and adopts funnel structure under tank, and without scraper is installed, greasy filth, the dregs of fat and suspended solid natural sedimentation, near the slag-drip opening of tank body lower part, facilitate deslagging and cleaning, are beneficial to the continual and steady work of dewater unit.
5, automatic dewatering unit structure of the present invention has the characteristics such as advantages of simple, good leak tightness, installation and repairing convenience, and tank body is compared with the tank body that tradition adopts flange to connect to form, and tank structure is simple and practical, good leak tightness.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of waste oil automatic dewatering unit of the present invention;
Fig. 2 is drain sump 1 internal structure and the outside enlarged diagram that connects in Fig. 1;
The circuit structure block diagram that Fig. 3 is Fig. 1;
The automatic dehydration method flow diagram that Fig. 4 is Fig. 1 shown device.
The sequence number of each parts and title in accompanying drawing: 1. drain sump; 2. oil-in; 3. the first magnetic valve; 4. right-angled trapezium strut angle; 5. hand-operated valve; 6. the second magnetic valve; 7. slag-drip opening; 8. choke valve; 9. aperture; 10. flexure type oil pipe; 11. oil level detection meter; 12. the 3rd magnetic valve; 13. dehydrated oil fuel sucking pipe; 14. discharge outlet; 15. oil reservoir; 16. oil mixing with water layer; 17. water layer; 18. former waste oil holding vessel; 19. dehydration waste oil holding vessel; 20. greasy filth tank; 21. square bracing frame; 22. embedded controller; 23. the first oil pump; 24. the second oil pump; 25. petroleum pipeline; 26. flange; 27. retainer ring.
The specific embodiment
Referring to Fig. 1, the present invention includes drain sump 1, former waste oil holding vessel 18, dehydration waste oil holding vessel 19, greasy filth tank 20 these four tank bodies.Wherein, drain sump 1 is the integral type tank body formed by seamless welding by three at the bottom of tank deck, tank skin, tank, and tank deck adopts self-support type spherical shell vault construction with ribbing, and its bearing capacity is good, conducts oneself with dignity lighter.The tank deck of drain sump 1 is provided with oil-out, dehydrated oil fuel sucking pipe 13 1 ends stretch into drain sump 1 inside by the oil-out of drain sump 1 tank deck, dehydrated oil fuel sucking pipe 13 other ends stretch out outside drain sump 1 and are connected by flange 26 with petroleum pipeline 25 1 ends, petroleum pipeline 25 other ends connect dehydration waste oil holding vessel 19, on the petroleum pipeline 25 between drain sump 1 and dehydration waste oil holding vessel 19, the 3rd magnetic valve 12 and the second oil pump 24 are set.Tank skin outer surface at drain sump 1 has oil-in 2, and oil-in 2 connects former waste oil holding vessel 18 by another root petroleum pipeline 25, and the first magnetic valve 3 and the first oil pump 23 are set on another root petroleum pipeline 25 between drain sump 1 and former waste oil holding vessel 18.
Again referring to Fig. 2, the flexure type oil pipe 10 that is positioned at drain sump 1 inside is rotary disk coil shape, along drain sump 1 inner wall surface, become 360 scales to revolve, the upper end of flexure type oil pipe 10 connects oil-in 2, the lower end of flexure type oil pipe 10 and choke valve 8 are threaded connection in drain sump 1 inside, can make untreated waste oil buffering enter drain sump 1, and effectively reduce the emulsification of waste oil.Have several through holes 9 on the flexure type oil pipe 10 spiraled of drain sump 1 inside, and the opening of each through hole 9 is towards different directions, making from through hole 9 waste oil out be different angles is ejected in drain sump 1, because the current of different angles clash into mutually, allow some little elaioleucites because shock is condensed into large elaioleucite, can accelerate the speed of water-oil separating, improve oil-water separation.
It is a pair of being used for fixedly every two of the right-angled trapezium strut angle 4 of drain sump 1, the four pairs of strut angles 4 are the tank skin outer surface at drain sump 1 along the circular direction uniform welding of drain sump 1 outer wall, to be fixedly mounted on the drain sump 1 of right-angled trapezium strut angle 4 on square bracing frame 21, reach the fixedly effect of drain sump 1.
Slag-drip opening 7 is arranged under at the bottom of the tank of drain sump 1, and slag-drip opening 7 places arrange hand-operated valve 5, connect greasy filth tank 20 under slag-drip opening 7.Pot bottom at drain sump 1 divides, and is positioned at slag-drip opening 7 sides discharge outlet 14 is set, and discharge outlet 14 places arrange the second magnetic valve 6.The pot bottom of drain sump 1 divides employing conical hopper structure, become the cone at 30 ° of inclinations angle with horizontal plane, make greasy filth, the dregs of fat and suspended solid natural sedimentation slag-drip opening 7 near, can regularly open hand-operated valve 5, facilitate deslagging and cleaning, and without manually specially cleaning, deslagging, be beneficial to the continual and steady work of drain sump 1.
Former waste oil is interior after precipitation after a while at drain sump 1, and because oil is different from the proportion of water, oil product swims in upper strata, and depositing in water drops to lower floor, forms layering, the oil reservoir 15 on upper strata, the oil mixing with water layer 16 of centre and the water layer 17 of lower floor.
In the flexure type oil pipe 10 spiraled of drain sump 1 inside is located at oil mixing with water layer 16, the oil-in 2 that the tank skin outer surface of drain sump 1 has is located at oil mixing with water layer 16 top in drain sump 1, and choke valve 8 is in oil mixing with water layer 16 bottom.
Oil level detection meter 11 is located at tank interior, have two oil level detection meters 11 respectively the retainer ring 27 by separately be fixed on a and the b place on drain sump 1 inwall, the a place is positioned at the interface place of oil reservoir 15 and oil mixing with water layer 16, and the b place is positioned at the interface place of oil mixing with water layer 16 and water layer 17.Two oil level detection meters 11 are electrically connected to respectively with the embedded controller 22 that is positioned at drain sump 1 outside by wire.
Circuit structure block diagram referring to Fig. 3, embedded controller 22 is to take cpu chip EFM32TG840F32 as core design, also comprise the direct current regulation circuit that connects respectively cpu chip EFM32TG840F32, solenoid valve control circuit, liquid level detection circuit etc., EFM32TG840F32 is connected with each circuit, for controlling each circuit, the signal that each circuit is transmitted is processed.The first oil pump 23 all is connected embedded controller 22 with the second oil pump 24, the direct current regulation circuit of embedded controller 22, the first oil pump 23 and the second oil pump 24 are connected respectively commercial power, the first magnetic valve 3, the second magnetic valve 6, the equal connected electromagnetic valve control circuit of the 3rd magnetic valve 12, two oil level detection meters 11 connect liquid level detection circuit.Two oil level detection meters 11 are delivered to cpu chip EFM32TG840F32 by the interfacial liquid level signal of interface, oil mixing with water layer 16 and the water layer 17 of the oil reservoir 15 that detects and oil mixing with water layer 16 respectively and are processed, the operating mechanism of whole device is controlled the switching of the first magnetic valve 3, the second magnetic valve 6, the 3rd magnetic valve 12, the first oil pump 23, the second oil pump 24 according to the detection signal of oil level detection meter 11 by embedded controller 22, reach the effect of automatic dehydration.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, during waste oil automatic dewatering unit work of the present invention, controlling the first magnetic valve 3 by embedded controller 22 opens and the first oil pump 23 work, 18 li untreated waste oils of former waste oil holding vessel are injected into to drain sump 1 by petroleum pipeline 25, in drain sump 1, former waste oil becomes 360 degree to spiral to choke valve 8 outflows of lower end by the flexure type oil pipe 10 of rotary disk coil shape downwards along the tank skin inner surface.Some through holes 9 on flexure type oil pipe 10 allow former waste oil be different angles and are ejected in drain sump 1, because the current of different angles clash into mutually, allow some little elaioleucites because shock is condensed into large elaioleucite, can accelerate the speed of water-oil separating, improve oil-water separation.When former trench oil liquid level reaches on oil reservoir 15 liquid level c place, close the first magnetic valve 3 and the first oil pump 23.Former waste oil is interior after precipitation after a while at drain sump 1, forms the layering of oil reservoir 15, oil mixing with water layer 16, water layer 17.The oil level detection meter 11 that is arranged on a place, b place detects respectively the interfacial position of oil reservoir 15 and oil mixing with water layer 16, water layer 17 and oil mixing with water layer 16, and the EFM32TG840F32 that detection signal is inputted in embedded controller 22 carries out Treatment Analysis.The oil level detection meter 11 at a place detects the interface of oil reservoir 15 oil mixing with water layers 16, when oil reservoir 15 liquid levels being detected lower than a point, water layer 17 liquid levels during higher than the b point, embedded controller 22 sends that signal is controlled magnetic valve by solenoid valve control circuit and oil pump is pumped, draining.Its specific implementation process is: when oil reservoir 15 liquid levels during lower than a, embedded controller 22 sends signal and opens the first magnetic valve 3, the first oil pump 23 and the 3rd magnetic valve 12, the second oil pump 24, and the dehydration waste oil is extracted into the 19 interior storages of dehydration waste oil holding vessel through the second oil pump 24.When oil reservoir 15 liquid levels being detected and reach a place, close the first magnetic valve 3, the first oil pump 23 and the 3rd magnetic valve 12, the second oil pump 24; The oil level detection meter 11 of position, b place detects the interface of oil mixing with water layer 16 and water layer 17, when water layer 17 liquid levels surpass b, open the second magnetic valve 6 and the first magnetic valve 3, the first oil pump 23, unnecessary water is discharged from the discharge outlet 14 of drain sump 1 right bottom, when water layer 17 falls back to the b place, close the second magnetic valve 6 and the first magnetic valve 3, the first oil pump 23, realize the waste oil automatic dehydration.This waste oil automatic dewatering unit, through stable operation after a while, can be opened hand-operated valve 5, carries out deslagging and cleaning operation.Simple and reasonable, control method is ingenious, reliable continuously, realized the purpose of automation dehydration.
Claims (5)
1. a waste oil automatic dewatering unit, comprise drain sump (1), former waste oil holding vessel (18) and dehydration waste oil holding vessel (19), it is characterized in that: drain sump (1) tank deck connects dehydration waste oil holding vessel (19) by petroleum pipeline, on the petroleum pipeline between drain sump (1) and dehydration waste oil holding vessel (19), the 3rd magnetic valve (12) and the second oil pump (24) are set, drain sump (1) tank skin outer surface has oil-in (2), oil-in (2) connects former waste oil holding vessel (18) by petroleum pipeline, the first magnetic valve (3) and the first oil pump (23) are set on the petroleum pipeline between drain sump (1) and former waste oil holding vessel (18), be positioned at drain sump (1) inside flexure type oil pipe (10) is arranged, flexure type oil pipe (10) becomes 360 scales to revolve along drain sump (1) inner wall surface, flexure type oil pipe (10) upper end connects oil-in (2), lower end connects choke valve (8), and flexure type oil pipe (10) is provided with several through holes towards different directions (9), form upper strata oil reservoir (15), middle profit mixed layer (16) and lower aqueous layer (17) after precipitation at the former waste oil in drain sump (1), there are two oil level detection meters (11) fixedly to be located at a and the b place on drain sump 1 inwall, the a place is positioned at the interface place of oil reservoir (15) and oil mixing with water layer (16), the b place is positioned at the interface place of oil mixing with water layer (16) and water layer (17), and two oil level detection meters (11) embedded controller (22) outside with being positioned at drain sump (1) is electrically connected to respectively, under at the bottom of drain sump (1) tank, slag-drip opening (7) is arranged, slag-drip opening (7) locates to arrange hand-operated valve (5), connect greasy filth tank (20) under slag-drip opening (7), slag-drip opening (7) side arranges discharge outlet (14), and discharge outlet (14) locates to arrange the second magnetic valve (6), each magnetic valve all is connected embedded controller (22) with each oil pump.
2. a kind of waste oil automatic dewatering unit according to claim 1, it is characterized in that: embedded controller (22) comprises cpu chip, direct current regulation circuit, solenoid valve control circuit, liquid level detection circuit connects respectively cpu chip, first, the second oil pump (23, 24) all connect embedded controller (22), embedded controller (22), first, the second oil pump (23, 24) connect respectively commercial power, first, second, the 3rd magnetic valve (3, 6, 12) equal connected electromagnetic valve control circuit, two oil level detection meters (11) connect liquid level detection circuit.
3. a kind of waste oil automatic dewatering unit according to claim 1, it is characterized in that: it is to become the cone at 30 ° of inclinations angle with horizontal plane that the pot bottom of drain sump (1) divides.
4. the automatic dehydration method of waste oil automatic dewatering unit as claimed in claim 1 is characterized in that according to the following steps:
A, embedded controller (22) are controlled the first magnetic valve (3) and are opened with the first oil pump (23) and work, the inner waste oil of former waste oil holding vessel (18) injects drain sump (1), by flexure type oil pipe (10), along the tank skin inner surface, become 360 degree to spiral to the choke valve (8) of lower end downwards and flow out, and be different angles by some through holes (9) and be ejected in drain sump (1);
B, when former trench oil liquid level reaches the upper liquid level c of oil reservoir (15) place, close the first magnetic valve (3) and the first oil pump (23), former waste oil in drain sump (1) through precipitation after a while, by oil level detection meter (11) detection interface;
C, when oil level detection meter (11) detects oil reservoir (15) liquid level lower than a place, embedded controller (22) sends signal and opens the first, the 3rd magnetic valve (3,12), the first oil pump (23,24), the storage in the second oil pump (24) is extracted into dehydration waste oil holding vessel (19) of dehydration waste oil, when oil level detection meter (11) detects oil reservoir (15) liquid level and reaches a place, close the first, the 3rd magnetic valve (3,12), the first oil pump (23,24); The oil level detection meter (11) at b place detects the interface of oil mixing with water layer (16) and water layer (17), when water layer (17) liquid level being detected over b, open first, second magnetic valve (3,6) and the first oil pump (23), unnecessary water is discharged from discharge outlet (14), when detection water layer (17) falls back to the b place, close first, second magnetic valve (3,6) and the first oil pump (23), realize automatic dehydration.
5. automatic dehydration method according to claim 4, it is characterized in that: in step C, automatic dehydration, after a period of time, is opened hand-operated valve (5) deslagging and cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310294446.5A CN103432771B (en) | 2013-07-15 | 2013-07-15 | Automatic dehydration apparatus and method for waste oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310294446.5A CN103432771B (en) | 2013-07-15 | 2013-07-15 | Automatic dehydration apparatus and method for waste oil |
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| CN103432771A true CN103432771A (en) | 2013-12-11 |
| CN103432771B CN103432771B (en) | 2015-03-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670680A (en) * | 2016-01-19 | 2016-06-15 | 浙江海洋学院 | Crude oil dewatering system |
| CN106809545A (en) * | 2016-05-24 | 2017-06-09 | 衢州锐思机械科技有限公司 | It is provided with the oil storage tank of profit mechanism for identifying |
| CN107935115A (en) * | 2017-12-25 | 2018-04-20 | 广州市恒尚诚环保科技有限公司 | Gutter oil recycling machine |
| CN109381895A (en) * | 2017-08-09 | 2019-02-26 | 上海轻叶工程科技有限公司 | Automatic water-stopping device |
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| CN102600642A (en) * | 2012-03-21 | 2012-07-25 | 泉州市泉港迅达石化设备安装有限公司 | Efficient three-liquid level oil-water automatic separation equipment |
| CN202509066U (en) * | 2011-12-31 | 2012-10-31 | 王荣昌 | Swill-cooked dirty oil disposer |
| CN103159362A (en) * | 2012-12-27 | 2013-06-19 | 周鼎力 | Three-phase separation and waste water purification standard treatment device of kitchen waste including 'waste oil' and solid waste and kitchen waste water |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202509066U (en) * | 2011-12-31 | 2012-10-31 | 王荣昌 | Swill-cooked dirty oil disposer |
| CN102600642A (en) * | 2012-03-21 | 2012-07-25 | 泉州市泉港迅达石化设备安装有限公司 | Efficient three-liquid level oil-water automatic separation equipment |
| CN103159362A (en) * | 2012-12-27 | 2013-06-19 | 周鼎力 | Three-phase separation and waste water purification standard treatment device of kitchen waste including 'waste oil' and solid waste and kitchen waste water |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670680A (en) * | 2016-01-19 | 2016-06-15 | 浙江海洋学院 | Crude oil dewatering system |
| CN106809545A (en) * | 2016-05-24 | 2017-06-09 | 衢州锐思机械科技有限公司 | It is provided with the oil storage tank of profit mechanism for identifying |
| CN109381895A (en) * | 2017-08-09 | 2019-02-26 | 上海轻叶工程科技有限公司 | Automatic water-stopping device |
| CN107935115A (en) * | 2017-12-25 | 2018-04-20 | 广州市恒尚诚环保科技有限公司 | Gutter oil recycling machine |
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| CN103432771B (en) | 2015-03-04 |
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