Sewage tank with oil stain cleaning function

Abstract

The invention provides a sewage tank with a greasy dirt cleaning function, and relates to the technical field of sealed conveying of petrochemical sewage. The sewage tank with the greasy dirt cleaning function comprises a tank body which is provided with a sewage inlet and a sewage outlet and is used for storing sewage; the suction assembly is arranged on the tank body and is used for sucking greasy dirt floating on the sewage surface; the steam cleaning assembly is used for spraying high-temperature steam into the tank body so as to purge oil sludge deposited at the bottom of the tank body; one end of the transition box is open, and the open end of the transition box is arranged at the sewage inlet and used for temporarily storing blown oil sludge; and the oil sludge recovery line is selectively communicated with the transition box and is used for recovering the oil sludge temporarily stored in the transition box. According to the sewage tank with the greasy dirt cleaning function, the problem that in a tank for storing sewage in the prior art, greasy dirt and greasy filth in the sewage adhere to the inner wall of the tank and deposit at the bottom of the tank, so that sewage discharge is not smooth is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sealed transportation of petrochemical sewage, and specifically, to a sewage tank with an oil pollution cleaning function. Background Art

[0002] Due to the improvement of environmental protection and the requirements of automation and intelligence, the oily sewage discharged from petrochemical storage tanks must adopt a closed transportation method of sewage pipelines + horizontal sewage tanks to avoid the pollution of the atmosphere by volatile organic gases in the sewage. The horizontal sewage tank is an indispensable device in the closed transportation process of oily sewage. The drainage ports of conventional horizontal sewage tanks are all opened at the lower part of the sewage tank and are connected to the sewage pipeline by welding, without the functions of automatic oil recovery and automatic sludge purging. When draining sewage, the oily sewage in the sewage tank continuously accumulates at the upper part of the sewage tank, and the sludge impurities in the sewage tank continuously accumulate at the bottom of the sewage tank. When the oily sewage at the upper part of the sewage tank accumulates to the point where the oil-water detection sensor can no longer detect the water medium, the sewage in the sewage tank cannot be discharged, and the oily sewage from the previous process cannot enter the sewage tank, and the sewage transportation system will stop running; when the sewage cannot be discharged due to sludge blockage at the bottom of the sewage tank, the sewage transportation system of the sewage tank will stop running. The accumulation of oily sewage at the upper part of the sewage tank and the accumulation of sludge at the lower part not only reduce the effective volume of the sewage tank, but also seriously affect the normal operation of the sewage transportation system.

[0003] Therefore, there is an urgent need for a device to solve at least one of the above problems. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to address the problem that the sewage discharge is not smooth in the existing tanks for storing sewage because the oil and sludge in the sewage adhere to the inner wall of the tank and deposit at the bottom of the tank.

[0005] To achieve the above purpose, the present invention provides a sewage tank with an oil pollution cleaning function, and the sewage tank with an oil pollution cleaning function includes:

[0006] A tank body for storing sewage, with a sewage inlet and a sewage outlet opened on the tank body. Sewage enters the tank body from the sewage inlet and is discharged from the sewage outlet;

[0007] A suction assembly arranged on the tank body for sucking the oily sewage floating on the water surface of the sewage;

[0008] A steam cleaning assembly for spraying high-temperature steam into the tank body to purge the oil sludge deposited at the bottom of the tank body;

[0009] A transition box with one end open, and the open end of the transition box is arranged at the sewage inlet for temporarily storing the purged oil sludge;

[0010] The sludge recovery line is selectively connected to the transition tank and is used to recover the sludge temporarily stored in the transition tank.

[0011] Specifically, the suction assembly includes: a suction pump and an oil-polluted water recovery pipe;

[0012] The oil-polluted water recovery pipe is arranged in the tank body, and a plurality of oil suction holes are formed in the pipe wall of the oil-polluted water recovery pipe;

[0013] The suction pump is connected to the oil-polluted water recovery pipe, and the suction pump sucks the oil floating on the water surface of the sewage through the oil suction holes formed in the oil-polluted water recovery pipe.

[0014] Specifically, a sliding hole is formed in the tank body;

[0015] The suction pump assembly includes: a sealing cover, a suction pump, a suction guide rail, a suction slider, an oil suction pipe, an oil suction disc and a return oil hose;

[0016] The suction guide rail is arranged across the sliding hole on the top surface of the tank body;

[0017] The suction slider is movably installed on the suction guide rail and can move along the extension direction of the suction guide rail;

[0018] The oil suction pipe is arranged on the suction slider. One end of the oil suction pipe extends out of the sliding hole and is connected to the return oil hose, and the other end extends into the sliding hole and is connected to the oil suction disc;

[0019] The suction pump is connected to the oil suction pipe through the return oil hose, and the suction pump is used to suck the oil floating on the water surface of the sewage through the return oil hose, the oil suction pipe and the oil suction disc;

[0020] The sealing cover is used to seal the sliding hole and the suction guide rail, the suction slider, the oil suction pipe and the oil suction disc.

[0021] Specifically, the oil suction pipe includes: a fixed sleeve and a movable sleeve;

[0022] The fixed sleeve is fixedly arranged on the suction slider, the movable sleeve is sleeved on the fixed sleeve and can telescopically move along the extension direction of the fixed sleeve. One end of the fixed sleeve not connected to the movable sleeve is connected to the return oil hose, and an oil suction disc is arranged at one end of the movable sleeve not connected to the fixed sleeve.

[0023] Specifically, the sewage tank with the function of cleaning oil pollution further includes: a scraper assembly, which is detachably arranged on the suction slider and can move in the tank body along with the suction slider, and the scraper assembly is used to scrape the sludge into the transition tank.

[0024] Specifically, the scraper assembly includes: a scraper and a connecting rod;

[0025] One end of the connecting rod is detachably connected to the suction slider, and the other end is connected to the scraper, and the scraper is used to scrape and convey sludge.

[0026] Specifically, the sewage tank with the function of cleaning oil stains further includes: a sludge sensor, which is arranged at the bottom of the tank body and is used to detect the thickness of the sludge deposition at the bottom of the tank body.

[0027] Specifically, the steam cleaning assembly includes: a steam controller, a high-temperature steam generator and a steam pipe;

[0028] The steam pipe is arranged at the bottom of the tank body, and a plurality of pairs of steam hole groups are arranged on the steam pipe;

[0029] The steam generator is communicated with the steam pipe, and the steam generator sprays high-temperature steam into the tank body through a plurality of pairs of steam hole groups on the steam pipe;

[0030] The steam controller is signal-connected to the sludge sensor and the steam generator, and the steam controller controls the steam generator to be turned on or off according to the sludge deposition thickness.

[0031] Specifically, each steam hole group includes two steam holes, the two steam holes are symmetrically arranged along the axis of the steam pipe, and a first given included angle is formed between the two steam holes.

[0032] Specifically, the sewage tank with the function of cleaning oil stains further includes: a plurality of oil-water detection sensors, which are arranged in the tank body and are used to detect the oil content in the sewage in the tank body.

[0033] Specifically, the sewage tank with the function of cleaning oil stains further includes: a vortex partition plate, which is arranged at the sewage outlet and is used to prevent the sewage from generating swirl when discharging from the sewage outlet.

[0034] The sewage tank with an oil pollution cleaning function provided by the present invention is provided with a suction assembly on the tank body. When sewage is stored in the tank body, the oil pollution floating on the water surface of the sewage is sucked through the suction assembly, so as to avoid the oil pollution in the sewage from adhering to the inner wall of the tank body, and at the same time, the amount of sludge formed at the bottom of the tank body after discharging the sewage is also reduced. In order to clean the sludge deposited at the bottom of the tank body, a steam cleaning assembly is arranged in the tank body. After discharging the sewage in the tank body, high-temperature steam is sprayed onto the bottom of the tank body through the steam cleaning assembly, so as to blow the sludge into the transition box by the sprayed high-temperature steam. Then, the sludge concentrated in the transition box is recovered through the sludge recovery line, so as to clean the oil pollution and sludge in the tank body, avoid the oil pollution and sludge from occupying the volume of the tank body, and at the same time, avoid the oil pollution and sludge from blocking the sewage inlet and outlet of the tank body, ensure the smooth inlet and outlet of sewage into and out of the tank body, and solve the problem that the sewage discharge is not smooth in the prior art due to the adhesion of oil pollution and sludge in the sewage to the inner wall of the tank and the deposition at the bottom of the tank.

[0035] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific embodiments section. Brief Description of the Drawings

[0036] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification. They are used together with the following specific embodiments to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0037] Figure 1 is a schematic structural diagram of a sewage tank with an oil pollution cleaning function provided by an embodiment of the present invention;

[0038] Figure 2 is a schematic structural diagram of a sewage tank with an oil pollution cleaning function provided by another embodiment of the present invention;

[0039] Figure 3 is Figure 1 a cross-sectional view of an oil pollution recovery pipe in a sewage tank with an oil pollution cleaning function;

[0040] Figure 4 is Figure 3 an A-A cross-sectional view of an oil pollution recovery pipe in a sewage tank with an oil pollution cleaning function;

[0041] Figure 5 is a cross-sectional view of a steam pipe in a sewage tank with an oil pollution cleaning function provided by an embodiment of the present invention.

[0042] Description of the Reference Numerals

[0043] 1 - Tank body; 2 - Suction assembly; 3 - Steam cleaning assembly; 4 - Transition box; 5 - Sludge recovery line; 6 - Sewage delivery pipeline; 7 - Scraper assembly; 8 - Sludge sensor; 9 - Water collection tank; 21 - Suction pump; 22 - Oil pollution recovery pipe; 221 - Oil suction hole; 23 - Sealing cover; 25 - Suction guide rail; 26 - Suction slider; 27 - Oil suction pipe; 28 - Oil suction tray; 29 - Oil return hose; 271 - Fixed sleeve; 272 - Movable sleeve; 31 - Steam pipe; 310 - Steam hole; 71 - Scraper; 72 - Connecting rod; 91 - Sewage discharge pipe. Detailed implementation manners

[0044] The following further elaborates on the detailed implementation manners of the present invention in conjunction with the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0045] In the embodiments of the present invention, unless otherwise stated, the directional terms such as "upper, lower, top, bottom" are generally used in reference to the directions shown in the drawings or in terms of the vertical, perpendicular or gravitational directions for describing the relative positional relationships of the components.

[0046] Figure 1 is a schematic structural diagram of a sewage tank with an oil pollution cleaning function, Figure 2 is a cross-sectional view of the oil pollution recovery pipe in the sewage tank with an oil pollution cleaning function; Figure 3 is Figure 2 A - A cross-sectional view of the oil pollution recovery pipe in the sewage tank with an oil pollution cleaning function; Figure 4 is a cross-sectional view of the steam pipe in the sewage tank with an oil pollution cleaning function.

[0047] As Figures 1-4 shown, the present invention provides a sewage tank with an oil pollution cleaning function, and the sewage tank with an oil pollution cleaning function includes:

[0048] A tank body 1 for storing sewage, with a sewage inlet and a sewage outlet provided on the tank body 1, and sewage enters the tank body 1 from the sewage inlet and discharges from the sewage outlet;

[0049] A suction assembly 2 provided on the tank body 1 for sucking the oil pollution floating on the sewage surface;

[0050] A steam cleaning assembly 3 for spraying high-temperature steam into the tank body 1 to blow the sludge deposited at the bottom of the tank body 1;

[0051] A transition box 4 with one end open, and the open end of the transition box 4 is provided at the sewage inlet for temporarily storing the blown sludge;

[0052] The sludge recovery line 5 is selectively communicated with the transition tank 4 and is used for recovering the sludge temporarily stored in the transition tank 4.

[0053] For the sewage tank with the function of cleaning oil stains provided by the present invention, sewage enters the tank body 1 from the sewage inlet for storage and is discharged from the sewage outlet. In order to prevent oil stains from adhering to the inner wall of the tank body 1, the oil stains floating on the water surface of the stored sewage in the tank body 1 are sucked away by the suction assembly 2, reducing the adhesion of oil stains on the inner wall of the tank body 1 and the sludge finally deposited at the bottom of the tank body 1. After discharging the sewage, the high-temperature steam sprayed by the steam cleaning assembly 3 is used to blow the sludge deposited at the bottom of the tank body 1 to blow the sludge into the transition tank 4. The sludge is temporarily stored in the transition tank 4, and then the sludge is recovered through the sludge recovery line 5. In this way, after the suction assembly 2 sucks the oil stains in the early stage and the steam cleaning assembly 3 blows the sludge, the oil stains and sludge in the tank body 1 are cleaned, avoiding the occupation of the volume in the tank body 1 by the oil stains and sludge, and also avoiding the blockage of the sewage inlet and outlet of the tank body 1 by the oil stains and sludge, ensuring the smooth entry and exit of sewage into and out of the tank body 1, and solving the problem of unsmooth sewage discharge caused by the adhesion of oil stains and sludge in the sewage to the inner wall of the tank and the deposition at the bottom of the tank in the prior art for storing sewage.

[0054] As Figure 1 shown, a sewage delivery pipeline 6 is arranged to deliver sewage into the tank body 1. In order to reduce the fittings and improve the utilization rate of the transition tank 4, the sewage delivery pipeline 6 is selectively communicated with the transition tank 4. When the sludge recovery line 5 is communicated with the transition tank 4, the sewage delivery pipeline 6 is not communicated with the transition tank 4. At this time, the sludge in the transition tank 4 is recovered through the sludge recovery line 5. After the sludge is recovered, the connection between the sludge recovery line 5 and the transition tank 4 is disconnected, and the sewage delivery pipeline 6 is communicated with the transition tank 4. In this way, the sewage first enters the transition tank 4 through the sewage delivery pipeline 6 and then gradually fills the entire tank body 1. In order to ensure smooth sewage discharge later, a water collecting tank 9 is arranged at the sewage outlet. One end of the water collecting tank 9 is open, and the open end of the water collecting tank 9 extends into the tank body 1. The open end protrudes from the sewage outlet by a given height, and the given height is between 2 - 10000 mm. In this way, the edge of the water collecting tank 9 protruding from the sewage outlet can also prevent the sludge from entering the water collecting tank 9. A drain port is arranged at the bottom of the water collecting tank 9, and the drain port is connected with a sewage discharge pipe 91 for discharging the sewage to a designated position. In order to avoid the generation of swirl when discharging sewage from the sewage outlet, a swirl resistance partition plate is buckled at the open end of the water collecting tank 9 to destroy the generated swirl.

[0055] In one embodiment, when sewage is stored in the tank body 1, in order to adsorb the oil stains on the sewage surface, the suction assembly 2 includes: a suction pump 21 and an oil stain recovery pipe 22;

[0056] The oil pollution recovery pipe 22 is arranged inside the tank body 1, and a plurality of oil suction holes 221 are formed in the pipe wall of the oil pollution recovery pipe 22;

[0057] The suction pump 21 is communicated with the oil pollution recovery pipe 22, and the suction pump 21 sucks the oil floating on the water surface of the sewage through the oil suction holes 221 formed in the oil pollution recovery pipe 22.

[0058] The suction pump 21 is arranged outside the tank body 1, and the oil pollution recovery pipe 22 is arranged inside the tank body 1. As Figure 3 and Figure 4 shown, a plurality of oil suction holes 221 are formed in the oil pollution recovery pipe 22. The oil pollution recovery pipe 22 is a flexible pipe. One end of the oil pollution recovery pipe 22 is communicated with the suction pump 21, and the other end extends into the tank body 1 and enters the sewage water surface. Through the suction action of the suction pump 21, the oil on the water surface is recovered into a designated container through the oil suction holes and the oil pollution recovery pipe 22. In order to enable the oil pollution recovery pipe 22 to always be immersed in the sewage water surface, a plurality of telescopic pull rods are arranged inside the tank body 1. The pull rods can telescopically move. The oil pollution recovery pipe 22 is arranged inside the tank body 1 through the plurality of pull rods. The telescopic movement of the pull rods can drive the oil pollution recovery pipe 22 away from or into the sewage, so as to facilitate sucking the oil in the sewage through the oil pollution recovery pipe 22 when the sewage level changes.

[0059] In another embodiment, in order to facilitate sucking the oil on the sewage water surface in the tank body 1, as Figure 2 shown, a sliding hole is formed in the tank body 1;

[0060] The suction pump assembly 2 includes: a sealing cover 23, a suction pump 21, a suction guide rail 25, a suction slider 26, an oil suction pipe 27, an oil suction disc 28 and a return oil hose 29;

[0061] The suction guide rail 25 is arranged across the sliding hole on the top surface of the tank body 1;

[0062] The suction slider 26 is movably installed on the suction guide rail 25 and can move along the extension direction of the suction guide rail 25;

[0063] The oil suction pipe 27 is arranged on the suction slider 26. One end of the oil suction pipe 27 is exposed out of the sliding hole and communicated with the return oil hose 29, and the other end extends into the sliding hole and is communicated with the oil suction disc 28;

[0064] The suction pump 21 is communicated with the oil suction pipe 27 through the return oil hose 29. The suction pump 21 is used to suck the oil floating on the sewage water surface through the return oil hose 29, the oil suction pipe 27 and the oil suction disc 28;

[0065] The sealing cover 23 is used to seal the sliding hole, the suction guide rail 25, the suction slider 26, the oil suction pipe 27 and the oil suction tray 28.

[0066] The oil suction pipe 27 includes: a fixed sleeve 271 and a movable sleeve 272;

[0067] The fixed sleeve 271 is fixedly arranged on the suction slider 26. The movable sleeve 272 is sleeved on the fixed sleeve 271 and can telescopically move along the extension direction of the fixed sleeve 271. One end of the fixed sleeve 271 that is not connected to the movable sleeve 272 is communicated with the oil return hose 29. The oil suction tray 28 is arranged at one end of the movable sleeve 272 that is not connected to the fixed sleeve 271.

[0068] A sliding hole is opened at the top of the tank body 1, and a suction guide rail 25 is installed on the outer surface of the top of the tank body 1 so that the suction guide rail 25 straddles the sliding hole. The suction slider 26 is slidably installed on the suction guide rail 25 and can move along the extension direction of the suction guide rail 25. The oil suction pipe 27 is arranged on the suction slider 26 and can move along with the suction slider 26 along the extension direction of the suction guide rail 25. One end of the oil suction pipe 27 is communicated with the oil return hose 29, and the other end is communicated with the oil suction tray 28. The suction pump 21 is communicated with the oil return hose 29. Through the suction of the suction pump 21, the oil on the sewage surface is sucked into a designated container through the oil suction tray 28, the oil suction pipe 27 and the oil return hose 29. During the process of sucking the oil, the suction slider 26 moves on the suction guide rail 25, driving the oil suction pipe 27 and the oil suction tray 28 to move in the tank body 1, so as to facilitate sucking the oil at different positions on the sewage surface. During the process of sucking the oil, the oil return hose 29 connected between the suction pump 21 and the oil suction pipe 27 is flexible. In this way, when the oil suction pipe 27 and the oil suction tray 28 move along with the suction slider 26, the oil return hose 29 can extend or shorten to ensure the smooth progress of sucking the oil. In order to adjust the distance between the oil suction tray 28 and the sewage surface, the oil suction pipe 27 is of a telescopic structure. The fixed sleeve 271 of the oil suction pipe 27 is vertically fixed on the suction slider 26, and the movable sleeve 272 is movably sleeved on the fixed sleeve 271 and can drive the oil suction tray 28 to telescopically move along the extension direction of the fixed sleeve 271, so as to adjust the distance between the oil suction tray 28 and the sewage surface and facilitate sucking the oil on the sewage surface. In order to prevent the gas in the tank body 1 from overflowing, a sealing cover 23 is sealed on the sliding hole. At the same time, the sealing cover 23 also covers the suction guide rail 25, the suction slider 26, the oil suction pipe 27 and the oil suction tray 28. A through hole is opened on the sealing cover 23 to enable the oil return hose 29 to pass through the through hole on the sealing cover 23 and be communicated with the oil suction pipe 27.

[0069] To clean the sludge deposited at the bottom of the tank body 1, the sewage tank with the function of cleaning oil stains further includes: a scraper assembly 7, which is detachably arranged on the suction slider 26 and can move in the tank body 1 along with the suction slider 26. The scraper assembly 7 is used to scrape the purged sludge into the transition box 4.

[0070] Specifically, the scraper assembly 7 includes: a scraper 71 and a connecting rod 72;

[0071] One end of the connecting rod 72 is detachably connected to the suction slider 26, and the other end is connected to the scraper 71. The scraper 71 is used to scrape and convey the sludge.

[0072] As Figure 2 shown, the connecting rod 72 is detachably arranged on the suction slider 26. One end of the connecting rod 72 extending into the tank body 1 is provided with a scraper 71. The shape of the scraper 71 can be set according to the shape of the bottom of the tank body 1. By moving the suction slider 26 on the suction guide rail 25, the connecting rod 72 and the scraper 71 are driven to move, so that the sludge is scraped into the transition box 4 by the scraper 71. The cooperation of the scraper 72 and the steam cleaning assembly 3 to clean the sludge at the bottom of the tank body 1 can improve the cleaning effect.

[0073] To facilitate the staff to know the deposition situation of the sludge at the bottom of the tank body 1, the sewage tank with the function of cleaning oil stains further includes: a sludge sensor 8, which is arranged at the bottom of the tank body 1 and is used to detect the deposition thickness of the sludge at the bottom of the tank body 1.

[0074] The steam cleaning assembly 3 includes: a steam controller, a high-temperature steam generator and a steam pipe 31;

[0075] The steam pipe 31 is arranged at the bottom of the tank body 1, and a plurality of pairs of steam hole groups are formed on the steam pipe 31;

[0076] The steam generator is communicated with the steam pipe 31, and the steam generator sprays high-temperature steam into the tank body 1 through a plurality of steam hole groups on the steam pipe 31;

[0077] The steam controller is signal-connected to the sludge sensor 8 and the steam generator. The steam controller controls the steam generator to be turned on or off according to the sludge deposition thickness.

[0078] Each steam hole group includes two steam holes 310. The two steam holes 310 are symmetrically arranged along the axis of the steam pipe 31, and a first given angle is formed between the two steam holes 310.

[0079] As Figure 1 and Figure 5As shown, the steam pipe 31 is arranged at the bottom of the tank body 1. The included angle between two steam holes 310 of each steam hole group formed on the steam pipe 31 is set as the first given angle α, and the first given angle α is between 5° and 180°. The steam holes 310 face the bottom of the tank body 1. The high-temperature steam ejected from the steam holes 310 of the steam pipe 31 blows the sludge at the bottom of the tank body 1 towards the transition box 4. The steam controller controls the start or stop of the steam generator according to the sludge deposition thickness detected by the sludge sensor 8. After the sludge deposition thickness at the bottom of the tank body 1 reaches the set thickness, the steam generator starts to convey steam into the steam pipe 31, and the deposited sludge in the tank body 1 is purged by the high-temperature steam.

[0080] In order to avoid excessive oil content in the sewage, resulting in an increase in deposited sludge during sewage discharge, the sewage tank with an oil and sludge cleaning function further includes: a plurality of oil-water detection sensors arranged in the tank body 1 for detecting the oil content in the sewage in the tank body 1. By detecting the oil content in the sewage through the oil-water detection sensors in real time, it is convenient for the staff to determine whether to discharge the sewage according to the oil content in the sewage, and at the same time, it can also provide parameter support for the suction assembly to suck the oil stain.

[0081] For the sewage tank with an oil and sludge cleaning function provided by the present invention, a suction assembly is arranged on the tank body. When there is sewage stored in the tank body, the oil stain floating on the sewage surface is sucked by the suction assembly, avoiding the oil stain in the sewage from adhering to the inner wall of the tank body, and at the same time reducing the amount of sludge formed at the bottom of the tank body after discharging the sewage. In order to clean the sludge deposited at the bottom of the tank body, a steam cleaning assembly is arranged in the tank body. After discharging the sewage in the tank body, high-temperature steam is ejected towards the bottom of the tank body through the steam cleaning assembly, so as to blow the sludge into the transition box by the ejected high-temperature steam. Then, the sludge concentrated in the transition box is recovered through the sludge recovery line, thereby cleaning the oil stain and sludge in the tank body, avoiding the occupation of the volume of the tank body by the oil stain and sludge, and at the same time avoiding the blockage of the sewage inlet and outlet of the tank body by the oil stain and sludge, ensuring the smooth entry and exit of sewage from the tank body, and solving the problem in the prior art that the sewage discharge is not smooth due to the adhesion of oil stain and sludge in the sewage to the inner wall of the tank for storing sewage and the deposition at the bottom of the tank.

[0082] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0083] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0084] In addition, any combination can be made among various different embodiments of the present invention as long as it does not violate the idea of the embodiments of the present invention, and it should equally be regarded as the content disclosed by the embodiments of the present invention.

Claims

1. A sewage tank with an oil stain cleaning function, characterized in that, The sewage tank with an oil pollution cleaning function includes: A tank body (1) for storing sewage. A sewage inlet and a sewage outlet are provided on the tank body (1). Sewage enters the tank body (1) from the sewage inlet and is discharged from the sewage outlet. A suction assembly (2) is arranged on the tank body (1) for sucking the oil pollution floating on the sewage surface. A steam cleaning assembly (3) is used to spray high-temperature steam into the tank body (1) to blow the sludge deposited at the bottom of the tank body (1). A transition box (4) has an open end. The open end of the transition box (4) is arranged at the sewage inlet for temporarily storing the blown sludge. A sludge recovery line (5) is selectively communicated with the transition box (4) for recovering the sludge temporarily stored in the transition box (4).

2. The sewage tank with an oil stain cleaning function according to claim 1, characterized in that, The suction assembly (2) includes: a suction pump (21) and an oil pollution recovery pipe (22). The oil pollution recovery pipe (22) is arranged in the tank body (1), and a plurality of oil suction holes (221) are provided on the pipe wall of the oil pollution recovery pipe (22). The suction pump (21) is communicated with the oil pollution recovery pipe (22), and the suction pump (21) sucks the oil pollution floating on the sewage surface through the oil suction holes (221) provided on the oil pollution recovery pipe (22).

3. The sewage tank with an oil pollution cleaning function according to claim 1, characterized in that, A sliding hole is provided on the tank body (1). The suction pump assembly (2) includes: a sealing cover (23), a suction pump (21), a suction guide rail (25), a suction slider (26), an oil suction pipe (27), an oil suction disc (28) and an oil return hose (29). The suction guide rail (25) is arranged across the sliding hole on the top surface of the tank body (1). The suction slider (26) is movably installed on the suction guide rail (25) and can move along the extension direction of the suction guide rail (25). The oil suction pipe (27) is arranged on the suction slider (26). One end of the oil suction pipe (27) extends out of the sliding hole and is communicated with the oil return hose (29), and the other end extends into the sliding hole and is communicated with the oil suction disc (28). The suction pump (21) is communicated with the oil suction pipe (27) through the oil return hose (29). The suction pump (21) is used to suck the oil pollution floating on the sewage surface through the oil return hose (29), the oil suction pipe (27) and the oil suction disc (28). The sealing cover (23) is used to seal the sliding hole and the suction guide rail (25), the suction slider (26), the oil suction pipe (27) and the oil suction disc (28).

4. The sewage tank with an oil pollution cleaning function according to claim 3, characterized in that, The oil suction pipe (27) includes: a fixed sleeve (271) and a movable sleeve (272). The fixed sleeve (271) is fixedly arranged on the suction slider (26). The movable sleeve (272) is sleeved on the fixed sleeve (271) and can telescopically move along the extension direction of the fixed sleeve (271). One end of the fixed sleeve (271) that is not connected to the movable sleeve (272) is communicated with the oil return hose (29), and the oil suction disc (28) is arranged at one end of the movable sleeve (272) that is not connected to the fixed sleeve (271).

5. The sewage tank with an oil pollution cleaning function according to claim 3, characterized in that, The sewage tank with the function of cleaning oil stains further includes: a scraper assembly (7), which is detachably arranged on the suction slider (26) and can move in the tank body (1) along with the suction slider (26). The scraper assembly (7) is used for scraping the sludge into the transition box (4).

6. The sewage tank with the function of cleaning oil stains according to claim 3, characterized in that, The scraper assembly (7) includes: a scraper (71) and a connecting rod (72); One end of the connecting rod (72) is detachably connected to the suction slider (26), and the other end is connected to the scraper (71). The scraper (71) is used for scraping the sludge.

7. The sewage tank with oil pollution cleaning function according to claim 1, characterized in that The sewage tank with the function of cleaning oil stains further includes: a sludge sensor (8), which is arranged at the bottom of the tank body (1) and is used for detecting the deposition thickness of the sludge at the bottom of the tank body (1).

8. The sewage tank with an oil pollution cleaning function according to claim 7, characterized in that, The steam cleaning assembly (3) includes: a steam controller, a high-temperature steam generator and a steam pipe (31); The steam pipe (31) is arranged at the bottom of the tank body (1), and a plurality of pairs of steam hole groups are formed on the steam pipe (31); The steam generator is communicated with the steam pipe (31), and the steam generator sprays high-temperature steam into the tank body (1) through the plurality of pairs of steam hole groups on the steam pipe (31); The steam controller is signal-connected to the sludge sensor (8) and the steam generator. The steam controller controls the steam generator to be turned on or off according to the sludge deposition thickness.

9. The sewage tank with an oil pollution cleaning function according to claim 8, characterized in that, Each steam hole group includes two steam holes (310). The two steam holes (310) are symmetrically arranged along the axis of the steam pipe (31), and a first given included angle is formed between the two steam holes (310).

10. The sewage tank with an oil stain cleaning function according to claim 1, characterized in that, The sewage tank with the function of cleaning oil stains further includes: a plurality of oil-water detection sensors, which are arranged in the tank body (1) and are used for detecting the oil content in the sewage in the tank body (1).

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