Filtering device for ship oily sewage treatment

Abstract

The utility model relates to the technical field of oily sewage of ships, and discloses a filtering device for treating oily sewage of ships, which comprises a device shell and an arranged screening net plate, a connecting block is additionally arranged at the top of the device shell, side scrapers are mounted on two sides of the connecting block, threaded lead screws are additionally arranged at the front end and the rear end of the top of the connecting block, and the threaded lead screws are connected with the screening net plate. The end of the threaded lead screw is coaxially connected with a driving motor, and the surface of the threaded lead screw is sleeved with a sliding block. The inner side face of the outer connecting plate is connected with a side cone plate. According to the filtering device for ship oily sewage treatment, after sewage passes through a screening net plate, a driving motor drives a threaded lead screw to rotate, a sliding block drives a connecting block and a side scraping plate to move at the top of the screening net plate according to the rotating direction of the threaded lead screw, and impurities are pushed to the two sides of the top of the screening net plate; and the screening net plate can be comprehensively cleaned, so that the phenomena that the service life of the screening net plate is shortened due to damage caused by vibration, the replacement time is shortened, and the use cost is increased are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ship oily sewage, and particularly relates to a filtering device for treating ship oily sewage. Background Technique

[0002] Ships are the general term for waterborne transportation vehicles, which are designed to navigate on the water surface or underwater to meet various transportation, operation or exploration needs. Ship oily sewage refers to the sewage containing crude oil, fuel oil, lubricating oil and various other petroleum products and their residues generated during ship operation. This sewage mainly comes from the engine room and cargo hold, and common types include oily tank washing water, engine room oily sewage and oily ballast water. In the process of treating ship oily sewage, filtration is an important link, which helps to remove impurities such as suspended solids and oil droplets in the sewage and improve the subsequent treatment effect, and a filtering device is required.

[0003] Common filtering devices for treating ship oily sewage usually consist of a device box body, an oil-water separator, a special pump, an electrical control box, a filter, a sewage discharge system and auxiliary equipment, etc. First, the oily sewage is transported into the device box body through the special pump for flowing. When the oily sewage passes through the oil-water separator, the oil droplets in the sewage are separated from the water. When the sewage passes through the filter, the impurities in the sewage are filtered, and then the sewage is discharged outwards by the sewage discharge system.

[0004] Traditional filtering devices for treating ship oily sewage intercept and separate the impurities in the passing sewage through a filter screen. After long-term use, a large amount of particulate impurities, etc. will accumulate on the filter screen. These impurities will gradually block the pores of the filter screen, reduce its permeability, and the blocked filter screen will limit the passing volume of the sewage. To solve the above problems, some filtering devices for treating ship oily sewage are provided with vibration devices, such as vibration motors, etc., and are connected to the filter screen, so that the filter screen vibrates inside the device, and the impurities also vibrate and the blockage is reduced, so that the sewage can pass normally. However, in this way, the filter screen is damaged after long-term vibration use and its service life is reduced, and maintenance and repair are required, resulting in a shortened replacement time and an increased use cost. Therefore, a filtering device for treating ship oily sewage is proposed. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a filtering device for treating ship oily sewage to solve the above technical problems that the filter screen is damaged after long-term vibration use, the service life is reduced, the replacement time is shortened and the use cost is increased.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: A filtering device for treating oily sewage on ships, comprising:

[0009] A device housing, and a connecting cover plate provided at the top of the device housing. A liquid inlet hopper is communicated with the top of the connecting cover plate, and a conical bottom plate is installed at the bottom of the device housing;

[0010] A screening mesh plate is arranged at the lower part of the inner cavity of the device housing. A connecting block is added to the top of the screening mesh plate, and side scraping plates are installed at the lower parts of both sides of the connecting block. Threaded lead screws are added to the front and rear ends directly above the top of the connecting block, and a driving motor is coaxially connected to the ends of the threaded lead screws. A sliding block is sleeved on the surface of the threaded lead screw and is connected to the connecting block, and a protective top plate is added to the top of the connecting block;

[0011] An outer connecting plate is arranged at the lower parts of both sides of the device housing, and a side conical plate is vertically connected to the inner side surface of the outer connecting plate. The side conical plate is attached to both sides of the top of the screening mesh plate. The sewage is conveyed into the interior of the device housing through the liquid inlet hopper. When the sewage passes through the screening mesh plate, it is filtered. The driving motor drives the threaded lead screw to rotate, and the sliding block drives the connecting block and the side scraping plates to move on the top of the screening mesh plate according to the rotation direction of the threaded lead screw, and pushes the impurities to both sides of the top of the screening mesh plate. Then, the outer connecting plate is separated from the device housing, so as to remove the impurities to the outside of the device housing. On the one hand, the screening mesh plate can be comprehensively cleaned, thus avoiding the phenomenon that the screening mesh plate is damaged due to vibration, reducing the service life, shortening the replacement time and increasing the use cost; on the other hand, the impurities on the top of the screening mesh plate can be cleaned in time without removing the device housing, thus facilitating the cleaning operation of the impurities.

[0012] Preferably, a diversion seat is installed in the upper part of the inner cavity of the device housing, and an oil-water separator is communicated with the center of the bottom of the diversion seat. The diversion seat diverts the sewage into the oil-water separator, and the oil-water separator performs the oil-water separation operation on the oily sewage.

[0013] Preferably, a diversion arc plate is installed at the central position of the inner cavity of the device housing, and connecting columns are added to the four surrounding walls of the inner wall of the device housing. The sewage after oil-water separation can be diverted from a single stream of sewage into multiple streams of sewage through the diversion arc plate, so as to reduce the impact force when the sewage descends.

[0014] Preferably, a connecting plate is sleeved on the upper part of the surface of the connecting column, and the connecting plate is connected to the diversion arc plate. A buffer spring is sleeved on the lower part of the surface of the connecting column and is attached to the connecting plate. When the diversion arc plate is impacted, the diversion arc plate descends along the surface of the connecting column through the connecting plate and compresses the buffer spring, so as to reduce the impact force received by the diversion arc plate.

[0015] Preferably, guide posts are installed at the front, rear and center on both sides of the connecting block, and a return spring is sleeved on the surface of the guide posts. The side scraper is slidably connected to the lower part of the surface of the guide posts, and the side scraper is in close contact with the return spring. When the connecting block drives the side scraper to move to the top of the side cone plate, the side scraper will rise along the guide posts and compress the return spring, so that impurities can be pushed from one side of the side cone plate to the other side. When the outer connecting plate drives the side cone plate to be pulled outwards, the impurities are directly discharged to the outside of the device housing, achieving the purpose of facilitating the cleaning of impurities.

[0016] Preferably, guide rods are installed on both sides of the outer connecting plate and are connected to the device housing. The outer connecting plate is sleeved on the surface of the guide rods. A compression spring is sleeved on the surface of the guide rods, and the compression spring is in close contact with the outer connecting plate. When the outer connecting plate is separated from the device housing, the outer connecting plate is pulled outwards and moves along the guide rods, which can compress the compression spring and facilitate the reset operation between the device housing and the guide rods.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present utility model provides a filtering device for treating oily sewage in ships, which has the following beneficial effects:

[0019] For the filtering device for treating oily sewage in ships, sewage is conveyed into the interior of the device housing through the liquid inlet hopper. When the sewage passes through the screening mesh plate, it is filtered. The driving motor drives the threaded lead screw to rotate, and the sliding block drives the connecting block and the side scraper to move on the top of the screening mesh plate according to the rotation direction of the threaded lead screw, and pushes the impurities to both sides of the top of the screening mesh plate, which can comprehensively clean the screening mesh plate, thus avoiding the phenomenon that the screening mesh plate is damaged due to vibration and reducing its service life, and shortening the replacement time and increasing the use cost. Then, the outer connecting plate is separated from the device housing, so that the impurities are removed to the outside of the device housing. The impurities on the top of the screening mesh plate can be cleaned in time without removing the device housing, thus facilitating the cleaning operation of the impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a schematic sectional view of the device housing of the present utility model;

[0022] Figure 3 is a schematic diagram of the diversion arc plate and its connection structure of the present utility model;

[0023] Figure 4 is a schematic diagram of the connecting block and its connection structure of the present utility model;

[0024] Figure 5This is a partial sectional view structural diagram of the side scraper of the utility model.

[0025] In the figure: 1, device housing; 2, connecting cover plate; 3, liquid inlet hopper; 4, diversion seat; 5, oil-water separator; 6, shunt arc plate; 7, connecting column; 8, buffer spring; 9, connecting plate; 10, screening mesh plate; 11, connecting block; 12, guiding column; 13, return spring; 14, side scraper; 15, protective top plate; 16, threaded lead screw; 17, driving motor; 18, sliding block; 19, side cone plate; 20, outer connecting plate; 21, guiding rod; 22, extrusion spring; 23, conical bottom plate. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] The present utility model provides a technical solution, a filtering device for treating oily sewage on ships, including: Please refer to Figure 1 , the device housing 1, and a connecting cover plate 2 provided on the top of the device housing 1, and a liquid inlet hopper 3 is communicated with the top of the connecting cover plate 2, and a conical bottom plate 23 is installed at the bottom of the device housing 1;

[0028] Please refer to Figure 4 , the screening mesh plate 10 is arranged in the lower part of the inner cavity of the device housing 1, and a connecting block 11 is added to the top of the screening mesh plate 10, and side scrapers 14 are installed on the lower parts of both sides of the connecting block 11. Threaded lead screws 16 are added to the front and rear ends directly above the top of the connecting block 11, and a driving motor 17 is coaxially connected to the end of the threaded lead screw 16. A sliding block 18 is sleeved on the surface of the threaded lead screw 16 and is connected to the connecting block 11, and a protective top plate 15 is added to the top of the connecting block 11;

[0029] The external connecting plate 20 is arranged at the lower parts on both sides of the device housing 1, and a side conical plate 19 is vertically connected to the inner side surface of the external connecting plate 20. The side conical plate 19 is in contact with the two sides of the top of the screening mesh plate 10. Sewage is conveyed into the interior of the device housing 1 through the liquid inlet hopper 3. When the sewage passes through the screening mesh plate 10 for filtration, the driving motor 17 drives the threaded lead screw 16 to rotate, and the sliding block 18 drives the connecting block 11 and the side scraper 14 to move on the top of the screening mesh plate 10 according to the rotation direction of the threaded lead screw 16, and pushes the impurities to the two sides of the top of the screening mesh plate 10. Then, the external connecting plate 20 is separated from the device housing 1, so as to remove the impurities to the outside of the device housing 1. On the one hand, the screening mesh plate 10 can be comprehensively cleaned, thus avoiding the phenomenon that the screening mesh plate 10 is damaged due to vibration, reducing its service life, shortening the replacement time and increasing the use cost; on the other hand, the impurities on the top of the screening mesh plate 10 can be cleaned in time without removing the device housing 1, which is convenient for cleaning the impurities.

[0030] Please refer to Figure 2 , a flow guiding seat 4 is installed in the upper part of the inner cavity of the device housing 1, and an oil-water separator 5 is connected to the center of the bottom of the flow guiding seat 4 in a communicating manner. The flow guiding seat 4 guides the sewage into the oil-water separator 5, and the oil-water separator 5 performs the oil-water separation operation on the oily sewage. A flow dividing arc plate 6 is installed at the central position of the inner cavity of the device housing 1, and connecting columns 7 are additionally arranged around the inner wall of the device housing 1. The sewage after oil-water separation can be divided into multiple strands of sewage through the flow dividing arc plate 6, so as to reduce the impact force when the sewage descends.

[0031] Please refer to Figure 3 , a connecting plate 9 is sleeved on the upper part of the surface of the connecting column 7, and the connecting plate 9 is connected to the flow dividing arc plate 6. A buffer spring 8 is sleeved on the lower part of the surface of the connecting column 7 and is in contact with the connecting plate 9. When the flow dividing arc plate 6 is impacted, the flow dividing arc plate 6 descends along the surface of the connecting column 7 through the connecting plate 9 and squeezes the buffer spring 8, so as to reduce the impact force received by the flow dividing arc plate 6.

[0032] Please refer to Figure 4, guide posts 12 are installed at the front, rear and center on both sides of the connecting block 11, and a return spring 13 is sleeved on the surface of the guide post 12. The side scraper 14 is slidably connected to the lower part of the surface of the guide post 12, and the side scraper 14 is in close contact with the return spring 13. When the connecting block 11 drives the side scraper 14 to move to the top of the side cone plate 19, the side scraper 14 will rise along the guide post 12 and squeeze the return spring 13, so that the impurities can be pushed from one side of the side cone plate 19 to the other side. When the outer connecting plate 20 drives the side cone plate 19 to be pulled outwards, the impurities are directly discharged to the outside of the device housing 1, achieving the purpose of facilitating the cleaning of impurities. Guide rods 21 are installed on both sides of the outer connecting plate 20 and are connected to the device housing 1. The outer connecting plate 20 is sleeved on the surface of the guide rod 21. A compression spring 22 is sleeved on the surface of the guide rod 21, and the compression spring 22 is in close contact with the outer connecting plate 20. When the outer connecting plate 20 is separated from the device housing 1, the outer connecting plate 20 is pulled outwards and moves along the guide rod 21, which can squeeze the compression spring 22, facilitating the reset operation between the device housing 1 and the guide rod 21.

[0033] In this solution: Sewage is conveyed into the interior of the device housing 1 through the liquid inlet hopper 3. When the sewage passes through the screening mesh plate 10, it is filtered. The drive motor 17 drives the threaded lead screw 16 to rotate, and the sliding block 18 drives the connecting block 11 and the side scraper 14 to move on the top of the screening mesh plate 10 according to the rotation direction of the threaded lead screw 16, and pushes the impurities to both sides of the top of the screening mesh plate 10. Then, the outer connecting plate 20 is separated from the device housing 1, so as to remove the impurities to the outside of the device housing 1. The diversion seat 4 diverts the sewage into the oil-water separator 5, and the oil-water separator 5 performs the oil-water separation operation on the oily sewage. When the diversion arc plate 6 is impacted, the diversion arc plate 6 descends along the surface of the connecting column 7 through the connecting plate 9 and squeezes the buffer spring 8, so that the sewage after oil-water separation can be divided into multiple strands of sewage by the diversion arc plate 6. When the connecting block 11 drives the side scraper 14 to move to the top of the side cone plate 19, the side scraper 14 will rise along the guide post 12 and squeeze the return spring 13, so that the impurities can be pushed from one side of the side cone plate 19 to the other side. When the outer connecting plate 20 is separated from the device housing 1, the outer connecting plate 20 is pulled outwards and moves along the guide rod 21, which can squeeze the compression spring 22. When the outer connecting plate 20 drives the side cone plate 19 to be pulled outwards, the impurities are directly discharged to the outside of the device housing 1.

[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-containing sewage treatment filtration device for ships, characterized in that, Comprising: A device housing (1), and a connecting cover plate (2) provided on the top of the device housing (1), with a liquid inlet hopper (3) communicating with the top of the connecting cover plate (2), and a conical bottom plate (23) installed at the bottom of the device housing (1); A screening mesh plate (10) is provided in the lower part of the inner cavity of the device housing (1), and a connecting block (11) is added to the top of the screening mesh plate (10), and side scraping plates (14) are installed at the lower parts on both sides of the connecting block (11). Threaded lead screws (16) are added to the front and rear ends directly above the top of the connecting block (11), and a driving motor (17) is coaxially connected to the end of the threaded lead screw (16). A sliding block (18) is sleeved on the surface of the threaded lead screw (16) and is connected to the connecting block (11), and a protective top plate (15) is added to the top of the connecting block (11); Outer connecting plates (20) are provided at the lower parts on both sides of the device housing (1), and side conical plates (19) are vertically connected to the inner side surfaces of the outer connecting plates (20), and the side conical plates (19) are in contact with the top sides of both sides of the screening mesh plate (10).

2. The oil-containing sewage treatment filtration device for ships according to claim 1, characterized in that: A diversion seat (4) is installed in the upper part of the inner cavity of the device housing (1), and an oil-water separator (5) is connected to the center of the bottom of the diversion seat (4).

3. The oil-containing sewage treatment filtration device for ships according to claim 1, wherein: A diversion arc plate (6) is installed at the central position of the inner cavity of the device housing (1), and connecting columns (7) are added around the inner wall of the device housing (1).

4. The filtering device for treating oily sewage of a ship according to claim 3, characterized in that: A connecting plate (9) is sleeved on the upper part of the surface of the connecting column (7), and the connecting plate (9) is connected to the diversion arc plate (6). A buffer spring (8) is sleeved on the lower part of the surface of the connecting column (7) and is in contact with the connecting plate (9).

5. The filtering device for treating oily sewage of a ship according to claim 1, wherein: Guide columns (12) are installed at the front, rear and center of both sides of the connecting block (11), and a return spring (13) is sleeved on the surface of the guide column (12). The side scraping plate (14) is slidably connected to the lower part of the surface of the guide column (12), and the side scraping plate (14) is in close contact with the return spring (13).

6. A filtering device for treating oily sewage of a ship according to claim 1, characterized in that: Guide rods (21) are installed on both sides of the outer connecting plate (20) and are connected to the device housing (1), and the outer connecting plate (20) is sleeved on the surface of the guide rod (21). An extrusion spring (22) is sleeved on the surface of the guide rod (21), and the extrusion spring (22) is in close contact with the outer connecting plate (20).

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