Oily wastewater treatment device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an oily wastewater treatment device, which comprises a primary treatment barrel and a water inlet pipe communicated with one end of the primary treatment barrel, firstly, oily wastewater is discharged into the first water distributor body through the water inlet pipe, primary treatment is conducted on the oily wastewater under the cooperation of the first water distributor body and the first oil-water separator, part of impurities can remain on the inner wall of the primary treatment barrel, and at the moment, the residual impurities are scraped off through the cleaning assembly; then part of the oily wastewater in the first-stage treatment barrel enters a second-stage treatment barrel, intermediate treatment is performed on the oily wastewater through a second water distributor body and a second oil-water separator, and the remaining oily wastewater in the second-stage treatment barrel is discharged into a third-stage treatment barrel; ultimate treatment is carried out under the cooperation of a third water distributor body and a third oil-water separator, so that resourceful treatment of wastewater is realized, resources such as oil are recycled, time and labor are saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a device for treating oily wastewater. Background Art

[0002] Wastewater treatment refers to the process of treating wastewater generated in industrial, agricultural, urban life and other activities in order to achieve the purpose of environmental protection and rational utilization of resources. The main goals of wastewater treatment include removing pollutants, reducing the adverse impact of water bodies on the ecological environment, and recycling water resources. Some industrial wastewater contains some oil. Since oil pollutants will have an impact on the environment, the main goal of oily wastewater treatment is to remove the oil in the wastewater or reduce it to the environmentally acceptable standard to protect water resources and the ecological environment.

[0003] Traditional oily wastewater treatment usually uses gravity separation to separate the oil in the wastewater. Gravity separation relies on the difference in oil-water specific gravity for separation, so its efficiency is affected by factors such as oil-water specific gravity and temperature. For some oil-water mixtures with similar densities, the separation effect is not ideal. In order to achieve effective separation, the wastewater needs to stay in the separation equipment for a certain period of time, which requires a larger equipment capacity or longer processing time, increasing the equipment's floor space and operating costs. In addition, the oily wastewater will contain certain impurities, which are usually discharged through the sewage outlet, but some impurities have a certain adhesion and are easily attached to the inner wall of the separation equipment and are difficult to remove. Over time, more impurities will accumulate inside the separation equipment, thereby affecting the oil-water separation effect. Utility Model Content

[0004] The purpose of the present invention is to provide an oily wastewater treatment device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an oily wastewater treatment device, comprising a primary treatment barrel, and further comprising:

[0006] a water inlet pipe connected to one end of the primary treatment barrel, the inner cavity of the water inlet pipe passes through the inner cavity of the primary treatment barrel, a flange is fixedly connected to the surface of the water inlet pipe, one end of the water inlet pipe is connected to a first water distributor body, both sides of the inner cavity of the primary treatment barrel are fixedly connected to a limited shell, a first oil-water separator is provided on the inner top of the primary treatment barrel, a sewage pipe is connected to the bottom of the primary treatment barrel, one end of the primary treatment barrel is connected to a first oil drain pipe, one end of the primary treatment barrel is connected to a first drain pipe, one end of the first drain pipe is connected to a connecting pipe body, one end of the connecting pipe body is connected to a second drain pipe, one end of the second drain pipe is connected to a tertiary treatment barrel, one end of the second drain pipe is connected to a third water distributor body, and a third oil-water separator is provided on the inner top of the tertiary treatment barrel;

[0007] A cleaning component is provided at one end of the primary processing barrel and is used to clean impurities attached to the inner wall of the primary processing barrel.

[0008] Preferably, the surface of the connecting pipe body is connected to a third drain pipe, one end of the third drain pipe is connected to a secondary treatment barrel, one end of the third drain pipe is connected to a second water distributor body, a second oil-water separator is provided on the inner top of the secondary treatment barrel, one end of the secondary treatment barrel is connected to a second oil drain pipe, the bottoms of the primary treatment barrel, the secondary treatment barrel and the tertiary treatment barrel are all fixedly connected to a limiting ring, the bottom of the limiting ring is fixedly connected to a support block, and one end of the tertiary treatment barrel is connected to the third oil drain pipe.

[0009] Preferably, the cleaning assembly includes a motor, which is fixedly connected to one end of the primary treatment barrel, and the output end of the motor is fixedly connected to a bidirectional screw, one end of the bidirectional screw penetrates into the inner cavity of the primary treatment barrel and is rotatably connected to one side of the inner cavity of the primary treatment barrel, the surface of the bidirectional screw is symmetrically threaded with two threaded sleeves, the bottom of the threaded sleeve is fixedly connected to a scraper, and the surface of the scraper is in contact with the inner wall of the primary treatment barrel.

[0010] Preferably, a positioning ring is fixedly connected to the surface of the motor, and one end of the positioning ring is fixedly connected to one end of the primary processing barrel.

[0011] Preferably, the surface of the bidirectional screw is rotatably connected to a bearing seat, and one end of the bearing seat is fixedly connected to one side of the inner cavity of the primary treatment barrel.

[0012] Preferably, two limiting blocks are symmetrically fixedly connected to the top of the scraper, and the surfaces of the limiting blocks are slidably connected to the inner cavity of the limiting shell.

[0013] Preferably, both sides of the limiting ring are fixedly connected with fixed blocks, and the bottom of the fixed block is fixedly connected to the top of the supporting block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model first discharges the oily wastewater into the first water distributor body through the water inlet pipe, and performs primary treatment on the oily wastewater through the cooperation of the first water distributor body and the first oil-water separator. Some impurities will remain on the inner wall of the primary treatment barrel. At this time, the remaining impurities will be scraped off by the cleaning component. Then, part of the oily wastewater in the primary treatment barrel will enter the secondary treatment barrel, and the oily wastewater will be intermediately treated through the second water distributor body and the second oil-water separator. The remaining oily wastewater in the secondary treatment barrel will be discharged into the tertiary treatment barrel, and will be ultimately treated through the cooperation of the third water distributor body and the third oil-water separator, thereby realizing wastewater resource treatment, recovering resources such as oil, saving time and effort, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the utility model;

[0018] Figure 3 This is a schematic diagram of the cleaning component structure of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first water distributor body of the utility model.

[0020] In the figure: 1. Primary treatment barrel; 2. Water inlet pipe; 3. Flange; 4. First water distributor body; 5. Limiting shell; 6. First oil-water separator; 7. Drain pipe; 8. First oil discharge pipe; 9. Cleaning assembly; 901. Motor; 902. Bidirectional screw; 903. Threaded sleeve; 904. Scraper; 905. Positioning ring; 906. Bearing seat; 907. Limiting block; 10. First drain pipe; 11. Connecting pipe body; 12. Second drain pipe; 13. Tertiary treatment barrel; 14. Third water distributor body; 15. Third oil-water separator; 16. Third drain pipe; 17. Secondary treatment barrel; 18. Second water distributor body; 19. Second oil-water separator; 20. Second oil discharge pipe; 21. Limiting ring; 22. Support block; 23. Third oil discharge pipe; 24. Fixing block. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0022] See also Figure 1-4The grease trap 2 is connected to the drainpipe 7 and the filter 3 is connected to the drainpipe 7. The grease trap 2 is connected to the drainpipe 7 and the filter 3 is connected to the drainpipe 7. Pipe 8, one end of the primary treatment barrel 1 is connected with a first drain pipe 10, one end of the first drain pipe 10 is connected with a connecting pipe body 11, one end of the connecting pipe body 11 is connected with a second drain pipe 12, one end of the second drain pipe 12 is connected with a tertiary treatment barrel 13, one end of the second drain pipe 12 is connected with a third water distributor body 14, a third oil-water separator 15 is provided on the inner top of the tertiary treatment barrel 13, the surface of the connecting pipe body 11 is connected with a third drain pipe 16, one end of the third drain pipe 16 is connected with a secondary treatment barrel 17, one end of the third drain pipe 16 is connected with a second water distributor body 18, a second oil-water separator 19 is provided on the inner top of the secondary treatment barrel 17, one end of the secondary treatment barrel 17 is connected with a second oil drain pipe 20, the bottom of the primary treatment barrel 1, the secondary treatment barrel 17 and the tertiary treatment barrel 13 are all fixedly connected to a limiting ring 21, the bottom of the limiting ring 21 is fixedly connected to a support block 22, and one end of the tertiary treatment barrel 13 is connected with a third oil drain pipe 23;

[0023] A cleaning component 9 is provided at one end of the primary treatment barrel 1 for cleaning impurities attached to the inner wall of the primary treatment barrel 1 .

[0024] The cleaning component 9 includes a motor 901, which is fixedly connected to one end of the primary treatment barrel 1. The output end of the motor 901 is fixedly connected to a bidirectional screw rod 902. One end of the bidirectional screw rod 902 passes through the inner cavity of the primary treatment barrel 1 and is rotatably connected to one side of the inner cavity of the primary treatment barrel 1. The surface of the bidirectional screw rod 902 is symmetrically threaded with two threaded sleeves 903. The bottom of the threaded sleeve 903 is fixedly connected with a scraper 904. The surface of the scraper 904 contacts the inner wall of the primary treatment barrel 1. The scraper 904 is located at the bottom of the threaded sleeve 903 and is on the inner wall of the primary treatment barrel 1. Its purpose is to scrape off impurities remaining on the inner wall of the primary treatment barrel 1.

[0025] A positioning ring 905 is fixedly connected to the surface of the motor 901 , and one end of the positioning ring 905 is fixedly connected to one end of the primary processing barrel 1 .

[0026] The surface of the bidirectional screw rod 902 is rotatably connected to a bearing seat 906, one end of which is fixedly connected to one side of the inner cavity of the primary treatment barrel 1. The bearing seat 906 is located on the surface of the bidirectional screw rod 902 and on the inner wall of the primary treatment barrel 1. Its purpose is to assist the bidirectional screw rod 902 in rotating.

[0027] Two limiting blocks 907 are symmetrically fixedly connected to the top of the scraper 904 , and the surfaces of the limiting blocks 907 are slidably connected to the inner cavity of the limiting shell 5 .

[0028] Both sides of the limiting ring 21 are fixedly connected with fixing blocks 24 , and the bottom of the fixing block 24 is fixedly connected to the top of the supporting block 22 .

[0029] Working principle: First, the oily wastewater is discharged to the inside of the first water distributor body 4 through the water inlet pipe 2, and the oily wastewater is evenly sprayed on the surface of the first oil-water separator 6 through the first water distributor body 4, and the oil and water in the wastewater are separated by the oil-water separation element in the first oil-water separator 6. The oil-water separator and the oil-water sprayer are both existing mature technologies. The working principle and structure are common knowledge known to those skilled in the art and will not be described in detail here. The separated light oil forms an oil layer on the upper liquid surface and is discharged through the first oil discharge pipe 8. The separated heavy matter sinks and enters the bottom of the equipment and is discharged through the sewage pipe 7. In the process of discharging impurities through the sewage pipe 7, some impurities will remain on the inner wall of the primary treatment barrel 1. At this time, the motor 901 in the cleaning component 9 drives the bidirectional screw 902 to rotate, so that the bidirectional screw 902 drives the scraper 904 on the threaded sleeve 903 to move on the inner wall of the primary treatment barrel 1, thereby scraping off the remaining impurities. After part of the oil and impurities are discharged, the remaining oily wastewater is sent through The first drain pipe 10 and the connecting pipe body 11 cooperate to transport the oil-containing wastewater to the second water distributor body 18, and then part of the oil-containing wastewater is evenly sprayed on the surface of the second oil-water separator 19 through the second water distributor body 18. The oil droplets with small particle size in the water are further captured by the oil removal element in the second oil-water separator 19 and float to the water surface. The floating oil is discharged through the second oil drain pipe 20. Subsequently, the remaining oil-containing wastewater in the secondary treatment barrel 17 enters the third water distributor body 14 through the connecting pipe body 11 and the second drain pipe 12, and then the oil-containing wastewater is evenly sprayed on the surface of the third oil-water separator 15 through the third water distributor body 14. The oil removal element in the third oil-water separator 15 further processes the residual oil in the wastewater. Part of the emulsified oil in the water is demulsified by the oil removal element in the third oil-water separator 15. The demulsified oil is separated and discharged through the third oil drain pipe 23 for recycling, thereby realizing wastewater resource treatment, recovering resources such as oil, saving time and effort, and improving work efficiency.

[0030] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An oily wastewater treatment device, comprising a primary treatment barrel (1), characterized in that: Also includes: A water inlet pipe (2) is connected to one end of the primary treatment barrel (1), the inner cavity of the water inlet pipe (2) passes through the inner cavity of the primary treatment barrel (1), a flange (3) is fixedly connected to the surface of the water inlet pipe (2), one end of the water inlet pipe (2) is connected to a first water distributor body (4), both sides of the inner cavity of the primary treatment barrel (1) are fixedly connected to a limiting shell (5), a first oil-water separator (6) is provided on the inner top of the primary treatment barrel (1), a sewage pipe (7) is connected to the bottom of the primary treatment barrel (1), and the primary treatment barrel ( 1) is connected to a first oil drain pipe (8), one end of the primary treatment barrel (1) is connected to a first drain pipe (10), one end of the first drain pipe (10) is connected to a connecting pipe body (11), one end of the connecting pipe body (11) is connected to a second drain pipe (12), one end of the second drain pipe (12) is connected to a tertiary treatment barrel (13), one end of the second drain pipe (12) is connected to a third water distributor body (14), and a third oil-water separator (15) is provided on the inner top of the tertiary treatment barrel (13); A cleaning component (9) is provided at one end of the primary treatment barrel (1) and is used to clean impurities attached to the inner wall of the primary treatment barrel (1).

2. The oily wastewater treatment device according to claim 1, characterized in that: The surface of the connecting pipe body (11) is connected to a third drain pipe (16), one end of the third drain pipe (16) is connected to a secondary treatment barrel (17), one end of the third drain pipe (16) is connected to a second water distributor body (18), a second oil-water separator (19) is provided on the inner top of the secondary treatment barrel (17), one end of the secondary treatment barrel (17) is connected to a second oil drain pipe (20), the bottoms of the primary treatment barrel (1), the secondary treatment barrel (17) and the tertiary treatment barrel (13) are all fixedly connected to a limiting ring (21), the bottom of the limiting ring (21) is fixedly connected to a support block (22), and one end of the tertiary treatment barrel (13) is connected to a third oil drain pipe (23).

3. The oily wastewater treatment device according to claim 1, characterized in that: The cleaning assembly (9) comprises a motor (901), the motor (901) being fixedly connected to one end of the primary treatment barrel (1), the output end of the motor (901) being fixedly connected to a bidirectional screw rod (902), one end of the bidirectional screw rod (902) passing through the inner cavity of the primary treatment barrel (1) and being rotatably connected to one side of the inner cavity of the primary treatment barrel (1), the surface of the bidirectional screw rod (902) being symmetrically threaded with two threaded sleeves (903), the bottom of the threaded sleeve (903) being fixedly connected to a scraper (904), the surface of the scraper (904) being in contact with the inner wall of the primary treatment barrel (1).

4. The oily wastewater treatment device according to claim 3, characterized in that: A positioning ring (905) is fixedly connected to the surface of the motor (901), and one end of the positioning ring (905) is fixedly connected to one end of the primary treatment barrel (1).

5. The oily wastewater treatment device according to claim 3, characterized in that: The surface of the bidirectional screw rod (902) is rotatably connected to a bearing seat (906), and one end of the bearing seat (906) is fixedly connected to one side of the inner cavity of the primary treatment barrel (1).

6. The oily wastewater treatment device according to claim 3, characterized in that: Two limiting blocks (907) are symmetrically and fixedly connected to the top of the scraper (904), and the surfaces of the limiting blocks (907) are slidably connected to the inner cavity of the limiting shell (5).

7. The oily wastewater treatment device according to claim 2, characterized in that: Both sides of the limiting ring (21) are fixedly connected with fixed blocks (24), and the bottom of the fixed block (24) is fixedly connected to the top of the supporting block (22).

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