CN214436706U - Integrated small-sized electric heating type swill oil separator - Google Patents

Abstract

The application relates to the technical field of oil-water separation equipment, and provides an integrated small electric heating type swill-oil separator which comprises a separation tank, a first electric heating type swill-oil separator and a second electric heating type swill-oil separator, wherein the separation tank is used for containing a mixed solution, and the upper part of the separation tank is provided with an oil overflow port; a heating device for heating the mixed solution to delaminate oil and water in the mixed solution; the liquid level height control device is used for increasing the liquid level height of the mixed solution so as to enable the layered oil to flow out of the oil overflow port; the water level height sensor is arranged in the separation tank and is lower than the oil overflow port on the basis of the same horizontal plane; and the defoaming device is arranged at the top of the separation tank and used for eliminating foam generated by the mixed solution. The small-size electric heating type swill oil separator of integration has advantages such as miniaturization, oil-water separation are simple and convenient and cost of maintenance is low.

Description

Integrated small-sized electric heating type swill oil separator

Technical Field

The application belongs to the technical field of oil-water separation equipment, and more specifically relates to a small-size electric heating type swill-oil separator of integration.

Background

The swill or the wet garbage leachate and other mixed solutions contain a large amount of oil stains, and if the swill or the wet garbage leachate and other mixed solutions cannot be separated, the environment is polluted, and the garbage and the water are also troublesome to dispose. Meanwhile, because China is a poor oil country, the oil can also cause resource waste if not recycled. Therefore, it is very necessary to be able to economically and effectively separate the grease from the swill.

At present, the separation of grease in swill generally adopts a heating and horizontal centrifuge separation mode, namely, the swill is heated firstly and then the grease, water and solid in the swill are separated out under the action of the horizontal centrifuge. However, this separation method has many problems, especially for the case of less swill. On one hand, the investment cost is too high, the equipment is expensive, and the investment is often up to tens of thousands yuan. On the other hand, the system reliability is poor, swill contains a large amount of organic acids and solids, various faults are easy to occur to the centrifugal machine, the centrifugal machine needs to be overhauled every month, the overhaul is very difficult, and the overhaul cost is very high.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide a small-size electric heat formula swill oil separator of integration to solve the technical problem that oil-water separation adopts the centrifugal separation mode and leads to with high costs among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides a small-size electric heat formula swill oil separator of integration, includes:

the separation tank is used for containing the mixed solution, and the upper part of the separation tank is provided with an oil overflow port;

a heating device for heating the mixed solution to delaminate oil and water in the mixed solution;

the liquid level height control device is used for increasing the liquid level height of the mixed solution so as to enable the layered oil to flow out of the oil overflow port;

the water level height sensor is arranged in the separation tank, and the height of the water level height sensor is lower than that of the oil overflow port; and the number of the first and second groups,

and the defoaming device is arranged at the top of the separation tank and is used for defoaming generated by the mixed solution.

In one embodiment, the liquid level height control device includes an expansion bladder disposed in the separation tank and a control assembly controlling a degree of expansion of the expansion bladder, the expansion bladder being immersed in the mixed solution.

In one embodiment, the expansion bag is a water bag, and the control assembly comprises a medium pipeline with one end connected with the water bag and the other end communicated with a water source, and a valve arranged on the medium pipeline.

In one embodiment, the inflatable bag is an air bag, and the control assembly comprises a medium pipeline with one end connected with the air bag and the other end communicated with an air source, and a valve arranged on the medium pipeline.

In one embodiment, the valve includes a first shut-off valve and an electrically operated valve.

In one embodiment, a flow meter is also provided on the media conduit.

In one embodiment, the heating device is arranged outside the separation tank, and the heating device comprises a heating pipe, a heater, a temperature sensor and a circulating pump, wherein the two ends of the heating pipe are respectively communicated with the upper part and the lower part of the separation tank, and the heater, the temperature sensor and the circulating pump are arranged on the heating pipe.

In one embodiment, the heating pipe is further provided with a second stop valve.

In one embodiment, the heating means is disposed inside the separation tank and is capable of being in direct contact with the mixed solution, and the heating means includes a heater and a temperature sensor.

In one embodiment, a flange opening is formed in the lower portion of the separation groove, a flange pipe is arranged at the flange opening in a sealing mode, the expansion bag is connected with the flange pipe in a sealing mode through a fastening piece, and the flange pipe is connected with the medium pipeline in a sealing mode.

In one embodiment, a liquid level height display device is arranged on the outer side of the separation tank.

In one embodiment, the liquid level height display device is one of a magnetic flap liquid level meter, an ultrasonic sensor, a floating ball liquid level meter or a transparent display window.

In one embodiment, the defoaming device comprises a defoaming agent feeding assembly and a nozzle arranged at the top of the separation tank, and the nozzle can eject the defoaming agent in the defoaming agent feeding assembly to the upper surface of the mixed solution for defoaming.

The application provides a small-size electric heating formula swill oil separator of integration's beneficial effect lies in: mix solution through heating device in to the separating tank heats, make profit layering and oil reservoir be located the top of water layer, and the mode of layering of stewing is very little to equipment damage, need not frequent maintenance, and under liquid level height control device's control, make the liquid level height of mixed solution promote so that the oil reservoir flows through oil overflow mouth and separate with the water layer, water level height-sensing ware is used for preventing the water layer from flowing through oil overflow mouth, defoaming device is used for eliminating the foam that produces in order to guarantee oil discharge effect, therefore, compare with prior art, the small-size electric heat formula swill oil separator of integration of this application has the miniaturization, oil-water separation is simple and convenient and advantage such as cost of maintenance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural view of an integrated small-sized electrothermal swill oil separator provided in the embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

1. a separation tank; 11. an oil overflow port; 12. a flange opening; 13. a flange pipe; 14. a fastener; 15. a seal ring; 16. a mixed solution feeding pipe; 17. a feed stop valve; 18. a blow-off pipe; 19. a blowoff valve; 2. a heating device; 21. heating a tube; 22. a heater; 23. a temperature sensor; 24. a second stop valve; 25. a circulation pump; 3. a liquid level height control device; 31. an inflation bladder; 32. a control component; 321. a media conduit; 322. A first shut-off valve; 323. an electrically operated valve; 324. a flow meter; 325. a water source; 326. a drain pipe; 327. a drain valve; 4. a water level height sensor; 5. a defoaming device; 51. a defoaming agent adding component; 52. a nozzle; 6. a liquid level height display device; 61. a connecting pipe; 62. a third stop valve; 63. and a fourth stop valve.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1, a description will now be given of an integrated small-sized electric heating type swill oil separator provided in the embodiments of the present application. The integrated small-sized electric heating type swill oil separator comprises a separation tank 1, a heating device 2, a liquid level height control device 3, a water level height sensor 4 and a defoaming device 5.

The separation tank 1 is used as a main body structure for separating oil and water, an accommodating cavity is formed in the separation tank, and the separation tank 1 can be made of antirust materials such as stainless steel materials coated with antirust paint, cement materials, plastic materials and the like. The separating tank 1 is used for containing mixed solution, and the mixed solution refers to mixed solution containing grease, such as swill or wet garbage leachate. An oil overflow port 11 is arranged at the upper part of the separation groove 1, an oil outlet pipe is arranged at the oil overflow port 11, and the oil outlet pipe is used for guiding the separated oil into the collection barrel. The distance from the oil overflow port 11 to the upper end surface of the separation tank 1 is 50-200 mm.

Wherein, the heating device 2 is used for heating the mixed solution so as to separate the oil and the water in the mixed solution, and the oil layer is positioned above the water layer after the oil and the water are separated because the density of the oil is smaller than that of the water. The heating device 2 may heat the mixed solution and then introduce the heated mixed solution into the separation tank 1, or may heat the mixed solution after the mixed solution is first introduced into the separation tank 1.

The liquid level height control device 3 is used for controlling the liquid level height of the mixed solution in the separation tank 1, and after the oil and the water in the separation tank 1 are layered, the liquid level height control device 3 is used for increasing the liquid level height of the mixed solution so that the layered oil flows out from the oil overflow port 11; since the oil layer is located above the water layer, oil flows out of the oil overflow port 11 in preference to water, and separation of oil and water and separate recovery of oil are achieved.

Wherein, in separation tank 1 was located to water level height sensor 4, water level height sensor 4 highly was less than the height of oil overflow mouth 11, specifically indicates that the response portion or the response face of water level height sensor 4 are less than the height of oil overflow mouth 11, and water level height sensor 4 is for responding to with water contact. In this embodiment, the height of the water level height sensor 4 is 1-50mm lower than the height of the oil overflow port 11. The water level height inductor 4 is used for responding to the liquid level height of water behind the layering, and after water level height inductor 4 contacted the back with the water layer, water level height inductor 4 sent feedback signal and transmitted for liquid level height control device 3 to make liquid level height control device 3 stop work or control the liquid level decline in the separating tank 1, flow out from oil overflow mouth 11 with preventing water. In the present embodiment, the water level height sensor 4 is a water level sensor; in other embodiments, an alarm is arranged on the separation tank 1 and connected with the water level height sensor 4, when the water level height sensor 4 senses water, the alarm gives an alarm, and at this time, the liquid level height control device 3 can be controlled to stop working or control the liquid level in the separation tank 1 to drop in a manual control mode.

Wherein, the fire fighting equipment 5 is located the top of separator tank 1 or fixes in the top of separator tank 1 through other mounts, and fire fighting equipment 5 is used for eliminating the produced foam of mixed solution to prevent the foam to the influence that the oil reservoir flows out from oil overflow mouth 11, guarantee the quality and the efficiency of separating oil.

The small-size electric heating formula swill oil separator of integration that this application embodiment provided's beneficial effect lies in: mix solution through heating device 2 in to separating tank 1 heats, make oil water layering and oil reservoir be located the top of water layer, and the mode of layering is very little to equipment damage, need not frequent maintenance, and under the control of liquid level height control device 3, make the liquid level height of mixed solution promote so that the oil reservoir flows through oil overflow mouth 11 and separates with the water layer, water level height-sensing ware 4 is used for preventing that the water layer from flowing through oil overflow mouth 11, guarantee the oil-water separation quality, defoaming device 5 is used for eliminating the foam that mixed solution produced in order to guarantee oil discharge effect, consequently, compare with prior art, the small-size electric heat formula swill oil separator of integration of this application embodiment has the miniaturization, oil-water separation is simple and convenient and the low advantage of cost of maintenance.

As shown in fig. 1, in the present embodiment, the liquid level height control apparatus 3 includes an expansion bladder 31 disposed in the separation tank 1 and a control unit 32 controlling the degree of expansion of the expansion bladder 31, the expansion bladder 31 being immersed in the mixed solution. The expansion bag 31 can be expanded under the control of the control module 32, and the expansion bag 31 can drive the liquid level of the mixed solution to rise when expanding, so that the purpose that the oil layer rises and flows out of the oil overflow port 11 is achieved. In this embodiment, the expansion bladder 31 is made of a high temperature resistant and elastic material, such as a high temperature resistant rubber material, a high temperature resistant silicone material, or a high temperature resistant plastic material.

In the first embodiment of this embodiment, the expansion bladder 31 is a water bladder, and the control assembly 32 includes a medium pipe 321 with one end connected to the water bladder and the other end connected to the water source 325, and a valve disposed on the medium pipe 321 for controlling the opening and closing of the medium pipe 321. In particular, the valve comprises a first shut-off valve 322 and/or an electric valve 323. A flow meter 324 is also provided in the medium pipe 321, and the flow meter 324 is a water flow meter. One end of the medium pipeline 321 is connected with the water source 325, and the other end is connected with the water bag, so that the water in the water source 325 flows into the expansion bag 31 to expand and swell the expansion bag 31, thereby achieving the purpose of improving the liquid level of the mixed solution. In other embodiments, the medium within the water source 325 may be other liquid media besides water. Wherein, the first stop valve 322 is used to control the water flowing through the medium pipe 321, and when the device is not in use and power is off, the water can be prevented from flowing into the water bag, preferably, the first stop valve 322 is a one-way valve, so as to prevent the water in the water bag from flowing backwards and reduce the pressure of the water source 325 that needs to inject water into the water bag, the electric valve 323 and the flow meter 324 are used to automatically control the water amount flowing into the water bag, and thus, the expansion rate of the water bag is used to control the rising rate of the liquid level height of the mixed solution, thereby ensuring the uniformity and controllability of the rising of the oil layer, and preventing the water from flowing out of the oil overflow port 11 due to the too fast rising of the liquid level. In the present embodiment, the water source is tap water or a tank equipped with a water pump.

In the second embodiment of the present embodiment, the inflatable bag 31 is an air bag, and the control assembly 32 includes a medium pipe 321 with one end connected to the air bag 325 and the other end communicated with an air source, and a valve disposed on the medium pipe 321, specifically, the valve includes a first cut-off valve 322 and/or an electric valve 323. A flow meter 324 is also provided in the media line. In this embodiment, the air source is an air pump or a high pressure air pump or an automatic inflation device. The flow meter 324 is an air flow meter, and the first stop valve 322 and the electric valve 323 function in the same manner as in the first embodiment.

As shown in fig. 1, in the first embodiment of the present embodiment, the heating device 2 is disposed outside the separation tank 1, so that the heating device 2 is prevented from being contaminated by the mixed solution, the installation and maintenance of the heating device 2 are facilitated, and the maintenance cost of the heating device 2 is reduced. Specifically, the heating device 2 includes a heating pipe 21 having both ends respectively communicated with the upper and lower portions of the separation tank 1, a heater 22 provided on the heating pipe 21, a temperature sensor 23, and a circulation pump 25. Two ends of the heating pipe 21 are respectively communicated with the separation tank 1 to form a circulation loop of the mixed solution, and the circulating pump 25 is used for providing power for the mixed solution so that the mixed solution can circulate in the heating pipe 21; the heating pipe 21 is also provided with a second stop valve 24, and the second stop valve 24 is used for controlling the on-off of the heating pipe 21 and has an opening and closing function; the temperature sensor 23 is used for sensing the temperature in the mixed solution in the heating pipe 21 so as to ensure that the oil in the mixed solution is melted into a liquid state and ensure the oil-water separation effect, when the temperature of the mixed solution reaches a preset temperature, the heating device 2 stops heating, and the mixed solution in the separation tank 1 stands still, so that the oil and the water are separated into layers; in this embodiment, the heater 22 is a tube heater, the heating tube 21 passes through the tube heater, and the heating tube 21 is a metal tube, preferably a rust-proof metal tube. The heater 22 is used for heating the heating pipe 21, so that the mixed solution in the heating pipe 21 is heated, the oil is melted, and the service life, the cleanness and the maintenance convenience of the heater 22 are ensured because the heater 22 is not contacted with the mixed solution.

In the second embodiment of the present embodiment, the heating means 2 is provided inside the separation tank 1 and can be in direct contact with the mixed solution, and the heating means 2 includes a heater 22 and a temperature sensor 23. In this embodiment, the heater 22 is similar to the heater 22 with a quick heater, so that the heater 22 directly heats the mixed solution, and at this time, a stirrer may be further disposed in the separation tank 1, and the stirrer is used to improve the uniformity of heating of the mixed solution and ensure sufficient separation of oil and water. The temperature sensor 23 is used to control the on/off operation of the heater 22. Wherein, the heater 22 can be arranged in a plurality of layers at different height positions of the separation tank 1, thus improving the heating efficiency of the mixed solution.

As shown in fig. 1, the lower portion of the separation tank 1 is provided with a flange port 12, and the flange port 12 is used for facilitating the cleaning, installation and replacement of the expansion bladder 31. The flange port 12 is provided with a flange pipe 13 in a sealing way, the expansion bag 31 is connected with the flange pipe 13 in a sealing way through a fastening piece 14, and the flange pipe 13 is connected with the medium pipeline 321 in a sealing way. The fastener 14 is a steel pipe, and the fastener 14 is hermetically connected with the opening of the expansion bladder 31. In one installation mode, in order to ensure sealing connection and firmness, after the opening of the expansion bag 31 is sleeved on the steel pipe in an interference manner, a hoop structure is arranged on the outer side of the steel pipe to prevent the expansion bag 31 from being separated, meanwhile, a plurality of rings of convex rings are arranged on the outer peripheral surface of the steel pipe, so that the sealing performance between the expansion pipe and the fastening piece 14 can be increased, the fastening piece 14 can be integrally formed with the flange pipe 13 or welded or in sealing connection through a mode of arranging the sealing ring 15, the sealing ring 15 is arranged between the flange pipe 13 and the flange opening 12 for sealing connection, and the sealing ring 15 is made of rubber materials such as nitrile rubber or fluororubber. In other embodiments, the expansion bladder 31 itself has a longer tube, which is connected in a sealing manner to the flange pipe 13 and to the medium pipe 13.

In the present embodiment, a drain pipe 326 is provided in the flange pipe 13, a drain valve 327 is provided in the drain pipe 326, and the drain valve 327 may be a manual valve or an electric valve. A drain pipe 326 is communicated with the expansion bladder 31, and the drain pipe 326 serves to drain the water inside the expansion bladder 31 so that the expansion bladder 31 is contracted to lower the height of the mixed solution. Wherein the drain pipe 326 is connected with the medium pipeline 321 through a three-way interface, or the drain pipe 326 is directly connected with the fastener 14 in a sealing way. When the water source is a water tank and a water pump, the water discharge pipe 326 is also communicated with the water tank, so that the water is recycled, and the cost is saved.

As shown in fig. 1, in the present embodiment, a liquid level height display device 6 is provided outside the separation tank 1. The liquid level height display device 6 is used for facilitating staff to determine the water level height in the separation tank 1 so as to timely supplement the mixed solution into the separation tank 1 and prevent the mixed solution from being added to the liquid level which is too high and directly discharged from the oil overflow port 11.

In the present embodiment, the liquid level height display device 6 is one of a magnetic flip plate liquid level meter, an ultrasonic sensor, a floating ball liquid level meter or a transparent display window. Preferably, the liquid level height display device 6 is a magnetic turning plate liquid level meter, two ends of the magnetic turning plate liquid level meter are respectively communicated with the separation tank 1 through connecting pipes 61, one of the connecting pipes 61 is provided with a third cut-off valve 62, the other connecting pipe 61 is provided with a fourth cut-off valve 63, and when the mixed solution needs to be subjected to oil-water separation, the third cut-off valve 62 and the fourth cut-off valve 63 are in an open state. A filtering means such as a filtering membrane or a filtering cotton may be provided on the connecting pipe 61 so that the water level in the magnetic flip plate level gauge is clear to determine the accuracy of the liquid level height.

In this embodiment, the defoaming device 5 is a spraying device, and specifically includes a defoaming agent feeding assembly 51 and a nozzle 52 disposed at the top of the separation tank 1, and the nozzle 52 can spray the defoaming agent in the defoaming agent feeding assembly 51 onto the upper surface of the mixed solution for defoaming. The defoaming agent feeding assembly 51 at least comprises a box body, a pipeline and a pressure pump, wherein the pipeline is connected with the box body and the nozzle 52, the pressure pump is arranged on the pipeline, defoaming agent solution is filled in the box body, and the pressure pump is used for spraying out the defoaming agent solution in the box body through the nozzle 52.

As shown in fig. 1, in this embodiment, the separation tank 1 is further provided with a mixed solution feeding pipe 16, the mixed solution feeding pipe 16 is communicated with a mixed solution storage tank or a storage container such as a swill adjusting pool, the mixed solution feeding pipe 16 is provided with a pump and a feeding stop valve 17, the pump is used for providing power, and the stop valve is used for controlling the amount of the mixed solution entering the separation tank 1. In this embodiment, the outlet of the mixed solution inlet pipe 16 extends to the bottom of the separation tank 1 so that the mixed solution can enter the separation tank 1 without sputtering and the amount of generated foam can be reduced.

As shown in fig. 1, in this embodiment, a drain pipe 18 is further disposed at the bottom of the separation tank 1, a drain valve 19 is disposed on the drain pipe 18, and the drain pipe 18 is used for discharging the separated water and the impurities settled at the bottom of the separation tank 1.

When the device is used, each stop valve is opened, then a proper amount of mixed solution (the liquid level is lower than the height of the oil overflow port 11) is injected into the separation tank 1 through the mixed solution feeding pipe 16, the heating device 2 is started to heat the mixed solution so as to melt the oil, then the heating device 2 is closed so as to enable the mixed solution to stand and stratify, and the standing time can be controlled by the controller; after the oil-water separation is completed, the electric valve 323 and the flow meter 324 are started to gradually expand the expansion bag 31, the expansion bag 31 gradually rises in the expansion process, the liquid level of the mixed solution gradually rises, when the mixed solution rises to a certain height, the oil layer flows out through the oil overflow port 11, when the water layer rises to be in contact with the water level height sensor 4, the electric valve 323 stops working to stop filling media into the expansion bag 31, at the moment, the blow-off valve 19 can be opened to discharge wastewater and impurities, and the drain valve 327 is opened to enable the expansion bag 31 to contract, so that the primary oil-water separation is completed.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. Small-size electric heat formula swill oil separator of integration, its characterized in that includes:

the separation tank (1) is used for containing the mixed solution, and the upper part of the separation tank (1) is provided with an oil overflow port (11);

a heating device (2) for heating the mixed solution to stratify oil and water in the mixed solution;

the liquid level height control device (3) is used for increasing the liquid level height of the mixed solution so as to enable the layered oil to flow out of the oil overflow port (11);

the water level height sensor (4) is arranged in the separation tank (1), and the height of the water level height sensor (4) is lower than that of the oil overflow port (11); and the number of the first and second groups,

and the defoaming device (5) is arranged at the top of the separation tank (1) and is used for defoaming generated by the mixed solution.

2. The integrated small-sized electrothermal swill oil separator according to claim 1, wherein the liquid level height control device (3) comprises an expansion bladder (31) disposed in the separation tank (1) and a control component (32) for controlling the expansion degree of the expansion bladder (31), and the expansion bladder (31) is immersed in the mixed solution.

3. The integrated small-sized electrothermal swill oil separator according to claim 2, wherein the expansion bag (31) is a water bag, and the control assembly (32) comprises a medium pipe (321) having one end connected with the water bag and the other end communicated with a water source (325), and a valve disposed on the medium pipe (321).

4. The integrated small-sized electrothermal swill oil separator according to claim 2, wherein the expansion bladder (31) is an air bladder, and the control assembly (32) comprises a medium pipe (321) having one end connected with the air bladder and the other end communicated with a gas source, and a valve disposed on the medium pipe (321).

5. The integrated small-sized electrothermal swill oil separator according to claim 2, wherein the heating device (2) is disposed outside the separation tank (1), and the heating device (2) comprises a heating pipe (21) having two ends respectively connected to the upper and lower parts of the separation tank (1), a heater (22) disposed on the heating pipe (21), a temperature sensor (23), and a circulating pump (25).

6. The integrated small-sized electric heating type swill oil separator as claimed in claim 2, wherein said heating device (2) is disposed inside said separating tank (1) and can be directly contacted with said mixed solution, said heating device (2) comprises a heater (22) and a temperature sensor (23).

7. The integrated small-sized electrothermal swill oil separator according to claim 3 or 4, wherein a flange port (12) is provided at the lower part of the separation tank (1), a flange pipe (13) is provided at the flange port (12) in a sealing manner, the expansion bladder (31) is connected with the flange pipe (13) in a sealing manner through a fastening member (14), and the flange pipe (13) is connected with the medium pipeline (321) in a sealing manner.

8. The integrated small-sized electric heating type swill oil separator as claimed in any one of claims 1-6, wherein a liquid level height display device (6) is provided outside the separation tank (1).

9. The integrated small-sized electrothermal swill oil separator according to claim 8, wherein the liquid level height display device (6) is one of a magnetic turn-over plate level meter, an ultrasonic sensor, a floating ball level meter or a transparent display window.

10. The integrated small-sized electrothermal swill oil separator according to claim 9, wherein the defoaming device (5) comprises a defoaming agent feeding component (51) and a nozzle (52) arranged at the top of the separation tank (1), and the nozzle (52) can eject the defoaming agent in the defoaming agent feeding component (51) to the upper surface of the mixed solution for defoaming.

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