CN213294787U

CN213294787U - Sewage oil interceptor

Info

Publication number: CN213294787U
Application number: CN202022009765.5U
Authority: CN
Inventors: 王强
Original assignee: Jianyang Hope Chuangmei Environmental Protection Co ltd
Current assignee: Jianyang Hope Chuangmei Environmental Protection Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-05-28
Anticipated expiration: 2030-09-15

Abstract

The application discloses a sewage oil separating tank, which comprises a water inlet pipe, an oil separating tank and a water drain pipe which are sequentially communicated, wherein a plurality of oil separating plates which divide the oil separating tank into a plurality of oil storage bins with mutually communicated bottoms are further arranged in the oil separating tank, the top of any oil separating plate is provided with a pressure equalizing hole, and the oil separating tank is further provided with a pressure equalizing pipe communicated with the outside; and the oil separator also comprises a suction device for sucking the oil stored in the oil separator and a control device for controlling the suction device to work or stop according to the level of the oil. The utility model adopts the unique float ball liquid level switch installed in pairs, can judge the sewage liquid level and the oil liquid level in the oil separation tank, so as to accurately control the suction device to suck oil according to the actual oil liquid level condition, thereby solving the problems of high energy consumption and poor economic and energy saving performance caused by uninterrupted operation; and the problem of oil-water mixing of the separated oil due to low oil level.

Description

Sewage oil interceptor

Technical Field

The utility model relates to an environmental protection technology field especially relates to the physics separator field of sewage, concretely relates to sewage oil interceptor.

Background

The urban domestic sewage contains a large amount of filtrate of kitchen waste, and a large amount of residual oil from a living area is collected by a domestic sewage pipeline and collected into a sewage pipeline. Because the nature of oil and sewage have essential difference, sewage treatment plant generally handles to organic matter and nitrogen phosphorus potassium, and a large amount of oil usually carries out the physical separation before entering sewage treatment process.

The existing oil-water separation generally utilizes an oil separation tank to be matched with a scraping device to slowly scrape oil layers on the surface layer by utilizing oil-water density difference. The most obvious defect of the mode is that the scraping mechanism always scrapes the surface of the liquid level, when the content of the oil is low, sewage is easily scraped as the oil, and the collected liquid still contains sewage with a large specific gravity; when fluid content is higher, though can not sneak into sewage, nevertheless owing to only act on the fluid surface, its inertia combined action that mainly relies on the adhesive force of fluid and strike off fast strikes off fluid, and it is lower to big oil mass sewage fluid separation efficiency like this, leads to oil interceptor oil reserve too big and follow sewage inflow next treatment process easily, brings the burden for follow-up sewage treatment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the oil-liquid separation efficiency is low in the prior art mentioned in the background art, and the sewage after separation still is doped with oil or sewage exists in the oil because the oil-content in the sewage cannot be distinguished, the application provides a sewage oil separation tank, which adopts a brand new structure design, can extract the oil with adaptability according to the oil storage capacity after the actual oil-water separation, and can adapt to the sewage oil-liquid separation with various oil contents. And simultaneously, the utility model discloses still be provided with leading filtering ponds for the separation further reduces the pipeline jam that arouses because of the incomplete solid-liquid separation of preorder technology. The utility model discloses structural design buries the formula installation suitable for, does not occupy any ground space. Simultaneously, this application still is provided with the sand discharging structure for the grit that deposits in the oil removal tank of discharging avoids leading to the grit siltation to block up the scheduling problem because of long-term the use.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

a sewage oil separation tank comprises a water inlet pipe, an oil separation tank and a water drain pipe which are sequentially communicated, wherein a plurality of oil separation plates which divide the oil separation tank into a plurality of oil storage bins with mutually communicated bottoms are further arranged in the oil separation tank, the top of any oil separation plate is provided with a pressure equalizing hole for communicating two adjacent oil storage bins, and the oil separation tank is further provided with a pressure equalizing pipe communicated with the outside; and the oil separator also comprises a suction device for sucking the oil stored in the oil separator and a control device for controlling the suction device to work or stop according to the level of the oil.

The working principle is as follows: the sewage enters the oil separation tank through the water inlet pipe, is finally discharged through the water discharge pipe and enters the subsequent sewage treatment process flow. After sewage entered the oil interceptor, because the oil interceptor of vertical setting had the separation effect to sewage, the velocity of flow of sewage can sharply descend and enter into next oil storage storehouse through oil interceptor bottom in, because the velocity of flow of sewage is lower, the fluid of mixing in the sewage can upwards float under the effect of buoyancy to by the oil interceptor separation. Because sewage is in the dynamic flow, consequently the individual layer oil interceptor can not be with whole fluid separation, still can have less fluid to enter into next oil storage storehouse along with sewage, carries out the secondary separation, and the like enters into the tertiary oil storage storehouse again and carries out fluid separation, has reached as far as possible will utilize the density difference to carry out fluid separation's fluid from sewage and has come out, finally discharges through the drain pipe. Because adopt multistage oil storage storehouse setting in the oil interceptor, the more oil storage storehouse that is close to the inlet tube more will store more fluid, and the fluid that is close to the oil storage storehouse storage of drain pipe more will be less, in order to realize that the fluid liquid level is balanced, can make each oil storage storehouse can eliminate the pressure differential through setting up in the voltage-sharing hole at oil interceptor top. Simultaneously, through the exhaust air that can be timely with the equalizer tube of external intercommunication for the fluid liquid level in each oil storage bin can reach unanimously, so that the suction of suction device to fluid. When the control device detects that the oil liquid level reaches the extraction height, the suction device is started to extract oil until the oil liquid level drops to the lower limit of the preset extractable oil liquid level, and the operation is stopped. Compared with the existing uninterrupted scraping mechanism, the novel continuous scraping mechanism can adaptively solve the problem of oil-water mixing still existing after separation caused by different oil contents in sewage.

As the preferable technical scheme of the application, the suction device comprises a branch oil pipe communicated with any one of the oil storage bins and an oil suction pipe communicated with any one of the branch oil pipes, the oil suction pipe is further communicated with the inlet end of an oil pump, and the outlet end of the oil pump is communicated with the oil collecting tank. Because the pressure equalizing pipe and the pressure equalizing hole for balancing the liquid level are arranged, the oil in the oil storage bin with a higher oil page can naturally flow into the oil storage bin with a lower oil level through the pressure equalizing hole, and the relative balance and consistency of the oil level are achieved. When the pumping device starts to pump oil, each oil pipe can extract oil in the corresponding oil storage bin until the oil liquid level in any oil storage bin reaches a preset minimum value.

For more precise control of the pumping device, preferably, the control device comprises one or more groups of liquid level controllers connected in parallel, and the liquid level controllers are composed of a first floating ball liquid level switch and a second floating ball liquid level switch which are connected in series and installed on any oil separation plate; the first floating ball liquid level switch and the second floating ball liquid level switch respectively comprise a first floating ball and a second floating ball which provide buoyancy, the density of the first floating ball is between the density of oil liquid and the density of water, and the density of the second floating ball is less than the density of the oil liquid;

when the circle center of the first floating ball is lower than the plane of the lower end surface of the branch oil pipe in the oil storage bin, the second floating ball liquid level switch is in a conducting state, otherwise, the second floating ball liquid level switch is in a disconnecting state;

and when the circle center of the second floating ball is lower than the plane of the lower end surface of the oil branch pipe in the oil storage bin, the liquid level switch of the second floating ball is in a disconnected state, otherwise, the liquid level switch of the second floating ball is in a connected state.

The working principle is as follows: because the density of the first floating ball is between the density of the oil liquid and the density of the water, the first floating ball is positioned on a boundary line of the oil liquid and the sewage and is suspended at the bottom of the sewage water surface and the oil liquid surface in a working state; the density of the second floating ball is smaller than that of the oil liquid, so that the second floating ball always floats on the surface of the oil liquid. In view of the density setting, in addition first floater liquid level switch and second floater liquid level switch are the series connection, and only when the two were in the conducting state, suction device just can work, and suction device is in the inactive condition all the time otherwise, can not suck fluid. The beneficial effect that so set up lies in:

once the plane where the circle center of the first floating ball is located is higher than the lower end face of the oil branch pipe and is arranged on the plane, the liquid level switch of the first floating ball is not conducted, the circuit of the suction device is in a disconnected state, the suction device can never suck sewage into the oil suction pipe, and the problem of oil-water mixing is avoided; only when the sewage level is lower than the lower end face of the branch oil pipe, the suction device can be electrified to work, so that the suction device can only suck water or air in the oil separation tank when in work.

Because the second floater is only higher than the plane height of the lower end surface of the oil branch pipe, the liquid level switch of the second floater is switched on, so that the suction device can only suck oil when working, and cannot suck air when no oil is sucked, thereby taking into account the accuracy and the energy saving of oil suction and avoiding unnecessary energy consumption. Adopt first floater level switch and second floater level switch cooperation practicality, and carry out the density of first floater and second floater and targeted setting realizes being a big technical bright point of this application to the accurate suction of fluid, also is the substantive improvement point that obviously is different from prior art, has solved the problem of water oil mixing, has reduced energy resource consumption simultaneously, has improved the feature of environmental protection.

In order to further refine, preferably, the first floating ball liquid level switch and the second floating ball liquid level switch are arranged in the same structure, and comprise a base, a universal ball, a sealing ring, a blind hole and a reed, wherein the universal ball is hinged to the base in a universal mode, the sealing ring is arranged between the base and the universal ball, the blind hole is arranged on the universal ball and used for installing a spring and a ball contact, and the reed is arranged on the base and used for being in contact with the ball contact to form a sliding conductive structure. As above structure, realize the control to first floater liquid level switch and second floater liquid level switch break-make through the position of injecing reed and spheroid contact to nimble the not mounting depth of a branch oil pipe of co-location height of matching improves the compatibility and the practicality of this application.

Preferably, a filtering tank is further arranged between the water inlet pipe and the oil separation tank.

Preferably, the filtering tank is cylindrical, a detachable filter screen is further arranged inside the filtering tank, and the filter screen is fixed through pressing of an end cover hinged to the filtering tank.

Preferably, the bottom of the oil separation tank is provided with a sand settling tank along the axis, a screw for discharging sand is installed in the sand settling tank, and the screw is driven to rotate by a driver.

Advantageous effects

1. The utility model discloses a set up the storage storehouse of multistage oil-water separation, can separate the fluid in the sewage step by step, improved the effective separation ratio of fluid, alleviate follow-up pressure because of fluid produces sewage treatment.

2. The utility model can judge the sewage liquid level and the oil liquid level by adopting the unique float ball liquid level switches installed in pairs, so as to accurately control the suction device to suck oil according to the actual oil liquid level condition, thereby solving the problems of high energy consumption and poor economic and energy saving performance caused by uninterrupted operation; and the problem of oil-water mixing of the separated oil due to low oil level.

3. The utility model discloses still add and to have dismantled leading filtering ponds, can further filter the solid impurity in the source sewage, avoid impurity to lead to the fact the jam to oil interceptor inside.

4. The utility model discloses still be provided with degritting mechanism bottom the oil interceptor, can regularly get rid of the grit that will deposit through the auger, avoid the oil interceptor to use for a long time and lead to the grit to deposit too much and block up inefficacy.

Drawings

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

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a sectional view taken along the line A-A in FIG. 1;

FIG. 4 is a schematic perspective view of the filtration tank in a separated state;

FIG. 5 is a perspective view of the oil interceptor in full section;

FIG. 6 is an enlarged schematic view of the structure of the area B in FIG. 3 (the liquid level controller is in the off state);

FIG. 7 is a schematic diagram of the structure of the liquid level controller in the conducting state;

fig. 8 is an enlarged view of the structure of region C in fig. 7.

In the figure: 1-water inlet pipe; 2-end cap; 3, filtering by using a filter screen; 4-a filtering tank; 5-an oil separation tank; 6-a grit chamber; 7-a screw machine; 8-a driver; 9-a sand discharge pipe; 10-oil removal plate; 11-an oil suction pipe; 12-branch oil pipe; 13-a pressure equalizing pipe; 14-an oil storage bin; 15-a drain pipe; 16-an oil pump; 17-a first float level switch; 18-a second float level switch; 170-floating ball; 171-a universal ball; 172-seal ring; 173-blind hole; 174-a spring; 175-ball contact; 176-reed; 180-second floating ball.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

in order to further clearly explain the technical solution and the working principle of the present application, the following description is briefly made with reference to the specific embodiments and the accompanying drawings. The sewage oil separating tank shown in the attached figures 1-5 of the specification comprises a water inlet pipe 1, an oil separating tank 5 and a water drain pipe 15 which are sequentially communicated, wherein a plurality of oil separating plates 10 which divide the oil separating tank 5 into a plurality of oil storage bins 14 with mutually communicated bottoms are further arranged in the oil separating tank 5, the top of any one oil separating plate 10 is provided with a pressure equalizing hole for communicating two adjacent oil storage bins 14, and the oil separating tank 5 is further provided with a pressure equalizing pipe 13 communicated with the outside; and also comprises a suction device for sucking the oil stored in the oil separation tank 5 and a control device for controlling the suction device to work or stop according to the level of the oil.

The working principle is as follows:

the sewage enters the oil separation tank 5 through the water inlet pipe 1, is finally discharged through the water outlet pipe 15 and enters the subsequent sewage treatment process flow. After sewage enters the oil separation tank 5, because the oil separation plate 10 of vertical setting has the separation effect to sewage, the velocity of flow of sewage can sharply descend and enter into next oil storage bin 14 through oil separation plate 10 bottom, because the velocity of flow of sewage is lower, the fluid of mixing in the sewage can upwards float under the effect of buoyancy to by the separation of oil separation plate 10. Because sewage is in the dynamic flow, therefore the individual layer oil interceptor 10 can not be with whole fluid separation, still can exist less fluid along with sewage enters into next oil storage bin 14, carries out the secondary separation, and the like, reentrant third level oil storage bin 14 carries out fluid separation, has reached as far as possible will utilize the density difference to carry out fluid separation's fluid from sewage, finally discharges through drain pipe 15. Because adopt multistage oil storage bin 14 setting in the oil interceptor 5, the oil storage bin 14 that is close to inlet tube 1 more will store more fluid, and the fluid that is close to the oil storage bin 14 storage of drain pipe 15 more will be less, in order to realize that the fluid liquid level is balanced, can make each oil storage bin 14 can eliminate pressure differential through setting up the pressure-equalizing hole at oil interceptor 10 top. Meanwhile, air can be timely discharged through the pressure equalizing pipes 13 communicated with the outside, so that the liquid level of oil in each oil storage bin 14 can be consistent, and the oil can be conveniently sucked by the suction device. When the control device detects that the oil liquid level reaches the extraction height, the suction device is started to extract oil until the oil liquid level drops to the lower limit of the preset extractable oil liquid level, and the operation is stopped. Compared with the existing uninterrupted scraping mechanism, the novel continuous scraping mechanism can adaptively solve the problem of oil-water mixing still existing after separation caused by different oil contents in sewage.

Example 2:

as a preferred embodiment of the present application, the sewage oil separation tank shown in fig. 1-7 is further elaborated on the basis of embodiment 1, and the suction device includes a branch oil pipe 12 communicated with any one of the oil storage bins 14, and an oil suction pipe 11 communicated with any one of the branch oil pipes 12, where the oil suction pipe 11 is further communicated with an inlet end of an oil pump 16, and an outlet end of the oil pump 16 is communicated with an oil collection tank. Because the pressure equalizing pipe 13 and the pressure equalizing hole for balancing the liquid level are arranged, the oil in the oil storage bin 14 with a higher oil page can naturally flow into the oil storage bin 14 with a lower oil level through the pressure equalizing hole, and the relative balance and consistency of the oil level are achieved. When the pumping device starts to pump oil, each branch oil pipe 12 pumps oil in the corresponding oil storage bin 14 until the oil level in any oil storage bin 14 reaches a preset minimum value.

The control device adopts a group of liquid level controllers which are composed of a first floating ball liquid level switch 17 and a second floating ball liquid level switch 18 which are connected in series and are arranged on any oil separation plate 10; the first float level switch 17 and the second float level switch 18 respectively comprise a first float 170 and a second float 180 which provide buoyancy, the density of the first float 170 is between the density of oil and the density of water, and the density of the second float 180 is less than the density of oil;

when the circle center of the first floating ball 170 is lower than the plane of the lower end surface of the branch oil pipe 12 in the oil storage bin 14, the second floating ball liquid level switch 18 is in a conducting state, otherwise, the second floating ball liquid level switch is in a disconnecting state;

when the circle center of the second floating ball 180 is lower than the plane of the lower end surface of the branch oil pipe 12 in the oil storage bin 14, the second floating ball liquid level switch 18 is in an off state, otherwise, the second floating ball liquid level switch is in an on state.

The working principle is as follows: because the density of the first floating ball 170 is between the density of the oil and the density of the water, the first floating ball 170 is positioned on the boundary line of the oil and the sewage and floats on the sewage surface and the bottom of the oil liquid surface in a working state; the density of the second floating ball 180 is less than the oil density, so the second floating ball 180 always floats on the oil surface. In view of the above density setting, in addition to the first float level switch 17 and the second float level switch 18 being connected in series, the pumping device can be operated only when both are in the on state, otherwise the pumping device is always in the off state and does not pump the oil. The beneficial effect that so set up lies in:

once the plane where the circle center of the first floating ball 170 is located is higher than the lower end face of the branch oil pipe 12, the first floating ball liquid level switch 17 is not switched on, and the line of the suction device is in a disconnected state, the suction device can never suck sewage into the oil suction pipe 11, so that the problem of oil-water mixing is avoided; the suction device can only be energized and operated if the sewage level is below the lower end face of the branch conduit 12, so that the suction device can only suck water or air in the oil separation tank 5 when in operation.

Because the second floating ball 180 is only higher than the plane height of the lower end surface of the branch oil pipe 12, the second floating ball liquid level switch 18 is switched on, so that the suction device can only suck oil when in work, and cannot suck air when no oil is sucked, thereby taking into account the accuracy and the energy saving of oil suction and avoiding unnecessary energy consumption. Adopt first floater level switch 17 and second floater level switch 18 cooperation practicality, and carry out the density of first floater 170 and second floater 180 and carry out the accurate suction to fluid to targeted setting and be a big technical highlight of this application, also be the substantive improvement point that obviously differs from prior art, solved the problem of water oil mixing, reduced energy resource consumption simultaneously, improved the feature of environmental protection.

It is worth mentioning that: the liquid level controller is a switch for controlling the on-off of the power supply of the oil pump 16, the oil pump 16 adopts a conventional series connection wire, the oil pump 16 adopts the existing oil pump product powered by the existing commercial power, the part belongs to the prior art, the wire connection of the switch and the specific structure of the oil pump 16 are not improved in any way in the application, and therefore, the detailed description of the existing part is omitted in the embodiment.

Example 3:

in order to better realize the switch control, on the basis of embodiment 2, further referring to fig. 1-8 of the specification, the first float level switch 17 and the second float level switch 18 adopt the same structure, and include a base, a universal ball 171 in universal hinge with the base, a sealing ring 172 disposed between the base and the universal ball 171, a blind hole 173 disposed on the universal ball 171 for mounting a spring 174 and a ball contact 175, and a reed 176 disposed on the base for contacting the ball contact 175 to form a sliding conductive structure. As described in the above structure, the on-off control of the first float level switch 17 and the second float level switch 18 is realized by limiting the positions of the reed 176 and the ball contact 175, so that the installation depth of the branch oil pipes 12 with different position heights can be flexibly matched, and the compatibility and the practicability of the application are improved. The positions of the first floating ball 170 and the second floating ball 180 are changed under the action of buoyancy through the change of the liquid level, so that the control of the first floating ball liquid level switch 17 and the second floating ball liquid level switch 18 is realized.

In this embodiment, as a perfect solution for the oil separation tank 5, a filtering tank 4 is further disposed between the water inlet pipe 1 and the oil separation tank 5, and is used for removing solids which may block the oil separation tank 5 and related sewage pipelines and oil paths. The filtering tank 4 is a cylinder, the inside of the filtering tank is also provided with a detachable filter screen 3, and the filter screen 3 is fixed by pressing an end cover 2 hinged on the filtering tank 4. When actual installation, can flush the installation with end cover 2 and ground to in the clearance of taking and the secondary installation of filter screen 3. Further, the pressure equalizing pipe 13 communicated with the external can be provided with an end cover, and the pressure equalizing pipe has two functions: firstly, in an environment that the inflow flow and the drainage flow of sewage are equivalent and the inflow of the sewage is stable, an end cover can be used for blocking a pressure equalizing pipe 13, and pressure equalization is realized through the internal communicating vessel principle; and secondly, external impurities can be prevented from entering the oil separation tank 5 through the pressure equalizing pipe 13. Of course, the arrangement is only selectively applicable according to the actual use environment and situation, and the scheme is not necessarily adopted.

In this embodiment, a sand settling tank 6 is arranged at the bottom of the oil separation tank 5 along the axis, a screw 7 for discharging sand and stone is installed in the sand settling tank 6, and the screw 7 is driven to rotate by a driver 8. The grit chamber 6 is also communicated with a sand discharge pipe 9 for discharging sand, and the sand discharge pipe 9 is provided with an openable cover cap. After the flow of sewage flow through the oil separation tank 5 reduces, it shows that the bottom of the oil separation tank 5 has a certain amount of settled sand to cause the bottom of the oil separation tank 5 to circulate unsmoothly, and the driver 8 is required to drive the screw 7 to discharge the settled sand through the sand discharge pipe 9, so that the blocking failure of the oil separation tank 5 is avoided. Because the utility model discloses a bury formula setting, consequently, should set up the independent installation space as fluid collection and the operating space that the grit was collected in driver 8 and oil pump 16's installation department. After the sand is discharged, the cover cap arranged at the end of the sand discharge pipe 9 is fixed and compact, and the sewage leakage is avoided.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a sewage oil interceptor, includes inlet tube (1), oil interceptor (5) and drain pipe (15) that communicate in proper order, its characterized in that: the oil separation tank (5) is also internally provided with a plurality of oil separation plates (10) which divide the oil separation tank (5) into a plurality of oil storage bins (14) with the bottoms mutually communicated, the top of any oil separation plate (10) is provided with a pressure equalizing hole for communicating two adjacent oil storage bins (14), and the oil separation tank (5) is also provided with a pressure equalizing pipe (13) communicated with the outside; and the device also comprises a suction device for sucking the oil stored in the oil separation tank (5) and a control device for controlling the suction device to work or stop according to the level of the oil.

2. The sewage oil interceptor of claim 1, wherein: the suction device comprises branch oil pipes (12) communicated with any oil storage bin (14) and an oil suction pipe (11) communicated with any branch oil pipe (12), the oil suction pipe (11) is also communicated with the inlet end of an oil pump (16), and the outlet end of the oil pump (16) is communicated with an oil collecting tank.

3. The wastewater oil interceptor of claim 1 or 2, wherein: the control device comprises a group of or a plurality of groups of parallel liquid level controllers, and each liquid level controller consists of a first floating ball liquid level switch (17) and a second floating ball liquid level switch (18) which are connected in series and are arranged on any oil separation plate (10); the first floating ball liquid level switch (17) and the second floating ball liquid level switch (18) respectively comprise a first floating ball (170) and a second floating ball (180) which provide buoyancy, the density of the first floating ball (170) is between the density of oil liquid and the density of water, and the density of the second floating ball (180) is less than the density of the oil liquid;

when the circle center of the first floating ball (170) is lower than the plane of the lower end surface of the branch oil pipe (12) in the oil storage bin (14), the second floating ball liquid level switch (18) is in a conducting state, otherwise, the second floating ball liquid level switch is in a disconnecting state;

when the circle center of the second floating ball (180) is lower than the plane of the lower end face of the branch oil pipe (12) in the oil storage bin (14), the second floating ball liquid level switch (18) is in an off state, otherwise, the second floating ball liquid level switch is in an on state.

4. The sewage oil interceptor of claim 3, wherein: first floater liquid level switch (17) and second floater liquid level switch (18) adopt the same structure setting, including the base, with universal articulated universal ball (171) of base, set up sealing washer (172) between base and universal ball (171), set up blind hole (173) that are used for installing spring (174) and spheroid contact (175) on universal ball (171), set up reed (176) that are used for forming the electrically conductive structure of sliding with spheroid contact (175) contact on the base.

5. The sewage oil interceptor of claim 4 wherein: and a filter tank (4) is also arranged between the water inlet pipe (1) and the oil separation tank (5).

6. The sewage oil interceptor of claim 5, wherein: the filter tank (4) is in a cylindrical shape, a detachable filter screen (3) is further arranged inside the filter tank, and the filter screen (3) is fixed through pressing of an end cover (2) hinged to the filter tank (4).

7. The sewage oil interceptor of claim 6 wherein: oil interceptor (5) bottom is provided with grit chamber (6) along the axis, install spiral ware (7) with grit discharge in grit chamber (6), spiral ware (7) are rotatory through driver (8) drive, grit chamber (6) still communicate have sand discharge pipe (9) that are used for the sand discharging, sand discharge pipe (9) are provided with open closed flap.