Oily wastewater treatment equipment

Abstract

The invention belongs to the field of sewage treatment equipment and discloses an oil-containing sewage treatment equipment. Two traction mechanisms are installed on a sewage tank, and the rings at the bottom of the two traction mechanisms are connected by a floating oil boom. The floating oil boom between the two traction mechanisms can be driven to move horizontally first, and the oil pollution layer in the distance is surrounded and gathered to the position of the oil skimming steel belt. Then, the floating oil boom is moved back and lifted at the same time to the original position, so as to achieve the effect of actively surrounding and gathering the oil pollution layer that continuously flows down from the sewage inlet trough to the position of the oil skimming steel belt, thereby increasing the speed of the oil pollution layer in the sewage tank to gather to the oil skimming steel belt and the efficiency of the oil skimming steel adhering to the oil pollution layer, and also facilitating the aggregation of the thinner oil pollution layer in the sewage tank into a thicker oil pollution layer, so that it is easier to be adhered to by the oil skimming steel, thereby improving the oil skimming efficiency and the thoroughness of the oil skimming.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment equipment, and more particularly to an oily sewage treatment equipment. Background Art

[0002] Oily sewage can be roughly divided into two forms, namely the first is oily sewage with oil droplets mixed in the sewage, and the second is oily sewage with oil droplets not mixed in the sewage and floating on the upper layer of the sewage. For the second type of oily sewage, the general staff uses a steel belt skimmer or a disc skimmer to remove the oil layer floating on the upper layer of the sewage. The steel belt skimmer needs to be used in conjunction with a sewage tank. After the oily sewage enters the sewage tank, the roller of the steel belt skimmer drives the skimming steel belt to rotate. At this time, the oil layer floating on the upper layer of the sewage adheres to the outer surface of the skimming steel belt, and then as the skimming steel belt continues to rotate, the oil layer is driven up until the oil layer reaches the scraper position of the steel belt skimmer and is scraped off. At this time, the scraped oil layer flows along the guide groove of the steel belt skimmer, thereby realizing the separation process of oil droplets.

[0003] Although the existing steel belt oil skimmer has many advantages in use, the inventors found that there are still the following shortcomings during actual use: in the process of the steel belt oil skimmer skimming the oil layer through the skimming steel belt, due to the lack of structure on the sewage tank to promote the oil layer to gather to the skimming steel belt, not only the speed of the oil layer in the sewage tank gathering to the skimming steel belt is slow, affecting the skimming efficiency, but also the thinner oil layer in the sewage tank is difficult to gather into a thicker oil layer, which is not conducive to the oil layer adhering to the outer surface of the skimming steel belt, affecting the skimming efficiency. Therefore, we proposed an oily sewage treatment equipment to solve the above-mentioned problems. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an oily sewage treatment equipment, which is provided by installing two traction mechanisms on a sewage tank, and the rings at the bottom of the two traction mechanisms are connected by a floating oil boom. When the driving motors of the two traction mechanisms are started, the floating oil boom between the two traction mechanisms can be driven to move horizontally first through the connection between the driving plate and the rocking arm and the limiting of the running track of the connecting piece by the limit stroke groove, so as to gather the oil pollution layer in the distance to the position of the skimming steel belt, and then retreat and lift it at the same time, and bring the floating oil boom back to the original position, so as to achieve the effect of actively gathering the oil pollution layer that continuously flows down from the sewage inlet trough to the position of the skimming steel belt, which not only improves the speed of the oil pollution layer in the sewage tank to gather to the skimming steel belt and improves the efficiency of the skimming steel adhering to the oil pollution layer, but also helps the thinner oil pollution layer in the sewage tank to gather into a thicker oil pollution layer, so that it is easier to be adhered to by the skimming steel, thereby improving the skimming efficiency and the thoroughness of the skimming.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] An oily wastewater treatment device comprises a wastewater tank, wherein both sides of the top of the wastewater tank are provided with traction mechanisms of the same structure, and the two traction mechanisms have the same structure and are arranged in opposite directions and symmetrically to each other;

[0007] The traction mechanism includes a second column fixedly mounted on the top of the sewage tank, the top of the second column is rotatably connected with a rotating shaft, and a rocking arm is fixedly mounted on one end of the rotating shaft, a strip travel groove is provided inside the rocking arm, a driving motor is fixedly mounted on one side of the second column, and a driving shaft on one side of the driving motor passes through the other side of the second column, a driving disc is fixedly mounted on the end of the driving shaft on one side of the driving motor, and a contact pile is fixedly welded on the edge of the driving disc;

[0008] A limit ring 1 and a limit ring 2 are provided at the bottom of the driving disk, and a limit stroke groove is formed between the limit ring 1 and the limit ring 2, the limit stroke groove includes a horizontal section and an arc-shaped lifting section, a connecting piece is provided at the intersection of the strip stroke groove and the limit stroke groove, an internal threaded hole is opened on the connecting piece, and an extension rod is threadedly connected to the inside of the internal threaded hole, and an adjusting nut is threadedly connected to the top of the extension rod, a ring is fixedly welded at the bottom of the extension rod, and the rings of the two traction mechanisms are connected by a floating oil boom.

[0009] Furthermore, one end of the contact pile extends to the outside of the rocking arm through the strip stroke groove, and an external thread structure is provided at one end of the contact pile, a fastening nut and a gasket are threadedly connected at one end of the contact pile, a wear-resistant bushing is rotatably connected to the outside of the contact pile located inside the strip stroke groove, and the outside of the contact pile contacts the inner wall of the strip stroke groove through the wear-resistant bushing.

[0010] Furthermore, the connecting member includes an exposed head section, the internal threaded hole is opened on the exposed head section, a connecting shaft section is fixedly welded on one side of the exposed head section, and one end of the connecting shaft section passes through the inside of the strip travel groove and the limit travel groove in sequence, an external thread structure is opened on one end of the connecting shaft section, and a fastening nut 2 and a gasket 2 are threadedly connected to one end of the connecting shaft section, and a gasket 3 is sleeved on the connecting shaft section located at the connection between the connecting shaft section and the exposed head section, and a wear-resistant bushing 2 and a wear-resistant bushing 3 are also rotatably connected to the connecting shaft section, and the connecting shaft section contacts the inner walls of the strip travel groove and the limit travel groove respectively through the wear-resistant bushing 2 and the wear-resistant bushing 3.

[0011] Furthermore, a plurality of heightening columns are fixedly welded to one side of the limiting ring 1 and the limiting ring 2, and the plurality of heightening columns are fixedly installed on the column 2 by bolts.

[0012] Furthermore, a steel belt oil skimmer and a sewage inlet trough are respectively arranged on the other two sides of the top of the sewage tank. One side of the steel belt oil skimmer is fixedly installed on the top of the sewage tank through a column. A skimming steel belt is arranged on the steel belt oil skimmer. The sewage tank is filled with sewage, and a layer of oil pollution layer floats on the top of the sewage. The bottom of the skimming steel belt extends into the sewage through the oil pollution layer.

[0013] Furthermore, the inner wall widths of the strip travel groove and the limit travel groove are equal.

[0014] Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0015] In this scheme, two traction mechanisms are installed on the sewage tank, and the rings at the bottom of the two traction mechanisms are connected by a floating oil boom. When the driving motors of the two traction mechanisms are started, the floating oil boom between the two traction mechanisms can be driven to move horizontally first through the connection between the driving plate and the rocking arm and the limiting of the running track of the connecting piece by the limit stroke groove, so as to gather the oil pollution layer in the distance to the position of the skimming steel belt, and then retreat and lift it at the same time to bring the floating oil boom back to the original position, so as to achieve the effect of actively gathering the oil pollution layer that continuously flows down from the sewage inlet trough to the position of the skimming steel belt, which not only increases the speed of the oil pollution layer in the sewage tank to gather to the skimming steel belt and the efficiency of the skimming steel adhering to the oil pollution layer, but also helps to gather the thinner oil pollution layer in the sewage tank into a thicker oil pollution layer, so that it is easier to be adhered to by the skimming steel, thereby improving the skimming efficiency and the thoroughness of the skimming. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the disassembled structure of the steel belt type oil skimmer of the present invention;

[0018] Figure 3 It is a schematic diagram of the floating oil boom of the present invention gathering the oil pollution layer;

[0019] Figure 4 It is a schematic diagram of the traction mechanism structure of the present invention;

[0020] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0021] Figure 6 It is a schematic diagram of the structure of the connecting piece of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the limiting ring 1 and the limiting ring 2 of the present invention.

[0023] Description of the numbers in the figure:

[0024] 1. Sewage tank; 2. Steel belt oil skimmer; 201. Oil skimmer steel belt; 3. Sewage inlet tank; 4. Column 1; 5. Sewage; 501. Oil layer;

[0025] 6. Traction mechanism; 7. Column 2; 8. Rotating shaft; 9. Rocker arm; 901. Strip travel groove; 10. Driving motor; 11. Driving plate; 1101. Contact pile; 12. Limiting ring 1; 1201. Heightening column; 13. Limiting ring 2; 1301. Limiting travel groove; 1302. Horizontal section; 1303. Arc-shaped lifting section; 14. Connecting piece; 1401. Internal threaded hole; 1402. Exposed head section; 1403. Gasket 2; 1404. Gasket 3; 1405. Wear-resistant bushing 2; 1406. Wear-resistant bushing 3; 15. Extension rod; 1501. Adjusting nut; 1502. Ferrule;

[0026] 16. Floating oil boom. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the specification of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figure 1-Figure 3 , an oily wastewater treatment device, comprising a wastewater tank 1, characterized in that: both sides of the top of the wastewater tank 1 are provided with traction mechanisms 6 of the same structure, and the two traction mechanisms 6 have the same structure and are arranged in opposite directions;

[0030] A steel belt oil skimmer 2 and a sewage inlet trough 3 are respectively arranged on the other two sides of the top of the sewage tank 1. One side of the steel belt oil skimmer 2 is fixedly installed on the top of the sewage tank 1 through a column 4. A skimming steel belt 201 is arranged on the steel belt oil skimmer 2. The sewage tank 1 is filled with sewage 5, and a layer of oil pollution layer 501 floats on the top of the sewage 5. The bottom of the skimming steel belt 201 extends to the inside of the sewage 5 through the oil pollution layer 501.

[0031] (I) The oil skimming principle of the steel belt oil skimmer of this oily wastewater treatment equipment is:

[0032] First, the oily sewage 5 flows continuously into the sewage tank 1 through the sewage inlet trough 3. Then, when the sewage 5 level in the sewage tank 1 continues to rise and the oil layer 501 is submerged above the top of the bottom end of the skimming steel belt 201, the steel belt skimmer 2 is started, and the motor inside it drives the roller to rotate, and causes the skimming steel belt 201 to rotate. Then, the oil layer 501 on the top of the sewage 5 continuously contacts and adheres to the outer surface of the skimming steel belt 201. As the skimming steel belt 201 rotates continuously, the oil layer 501 on the top of the sewage 5 continuously contacts and adheres to the outer surface of the skimming steel belt 201. The oil layer 501 on the outer surface of 201 is continuously lifted. When the oil layer 501 reaches the scraper of the steel belt skimmer 2, the oil layer 501 is scraped off from the outer surface of the skimming steel belt 201. Then the scraped off oil layer 501 flows along the guide groove of the steel belt skimmer 2. Here, the clean skimming steel belt 201 continues to rotate downward, and so on and so forth until the oil layer 501 is cleaned (the detailed structure and specific working principle of the steel belt skimmer are already existing known public technologies, so they will not be described in detail here).

[0033] Example 2

[0034] In view of the above embodiment 1, for further description, refer to Figure 1-Figure 7 The traction mechanism 6 includes a column 2 7 fixedly mounted on the top of the sewage tank 1, a rotating shaft 8 is rotatably connected to the top of the column 2 7, and a rocking arm 9 is fixedly mounted on one end of the rotating shaft 8, a strip travel groove 901 is provided inside the rocking arm 9, a driving motor 10 is fixedly mounted on one side of the column 2 7, and a driving shaft on one side of the driving motor 10 passes through the other side of the column 2 7, a driving disc 11 is fixedly mounted on the end of the driving shaft on one side of the driving motor 10, and a contact pile 1101 is fixedly welded on the edge of the driving disc 11;

[0035] A limit ring 12 and a limit ring 2 13 are provided at the bottom of the driving disc 11, and a limit stroke groove 1301 is formed between the limit ring 12 and the limit ring 2 13, the limit stroke groove 1301 includes a horizontal section 1302 and an arc-shaped elevated section 1303, a connecting member 14 is provided at the intersection of the strip stroke groove 901 and the limit stroke groove 1301, an internal threaded hole 1401 is provided on the connecting member 14, and an extension rod 15 is threadedly connected to the inner part of the internal threaded hole 1401, and an adjusting nut 1501 is threadedly connected to the top of the extension rod 15, a ferrule 1502 is fixedly welded to the bottom of the extension rod 15, and the ferrules 1502 of the two traction mechanisms 6 are connected through a floating oil boom 16;

[0036] One end of the contact pile 1101 extends to the outside of the rocking bar 9 through the strip travel groove 901, and an external thread structure is provided at one end of the contact pile 1101, and a fastening nut 1 and a gasket 1 are threadedly connected to the one end of the contact pile 1101, and a wear-resistant bushing 1 is rotatably connected to the outside of the contact pile 1101 located inside the strip travel groove 901, and the outside of the contact pile 1101 contacts the inner wall of the strip travel groove 901 through the wear-resistant bushing 1;

[0037] The connecting member 14 includes an exposed head section 1402, an internal threaded hole 1401 is provided on the exposed head section 1402, a connecting shaft section is fixedly welded on one side of the exposed head section 1402, and one end of the connecting shaft section passes through the inside of the strip travel groove 901 and the limit travel groove 1301 in sequence, an external thread structure is provided on one end of the connecting shaft section, a fastening nut 2 and a gasket 2 1403 are threadedly connected to one end of the connecting shaft section, a gasket 3 1404 is sleeved on the connecting shaft section located at the connection between the connecting shaft section and the exposed head section 1402, a wear-resistant bushing 2 1405 and a wear-resistant bushing 3 1406 are also rotatably connected to the connecting shaft section, and the connecting shaft section contacts the inner walls of the strip travel groove 901 and the limit travel groove 1301 respectively through the wear-resistant bushing 2 1405 and the wear-resistant bushing 3 1406;

[0038] A plurality of heightening columns 1201 are fixedly welded on one side of the limiting ring 12 and the limiting ring 2 13 . The plurality of heightening columns 1201 are fixedly installed on the column 2 7 by bolts. The inner wall widths of the strip travel groove 901 and the limiting travel groove 1301 are equal.

[0039] (II) The principle of the traction mechanism and floating oil boom of this oily wastewater treatment equipment to gather the oil layer is:

[0040] First, the driving motors 10 of the two traction mechanisms 6 are started, driving the driving disks 11 of the two traction mechanisms 6 to rotate, and then the driving disks 11 cause the swinging arm 9 to swing through the connection with the contact pile 1101, that is, the bottom end of the swinging arm 9 swings first from the sewage inlet trough 3 side to the steel belt skimmer 2 side, and then swings from the steel belt skimmer 2 side to the sewage inlet trough 3 side. During the swinging process of the swinging arm 9, since the swinging arm 9 is connected to the limit stroke groove 1301 through the connecting piece 14, and the limit stroke groove 1301 includes a horizontal section 1302 and an arc-shaped lifting section 1303, the connecting piece 14 can move horizontally from the sewage inlet trough 3 side to the steel belt skimmer 2 side along the horizontal section 1302, and then return to the initial position along the arc-shaped moving trajectory along the arc-shaped lifting section 1303 in the opposite direction, thereby driving the extension rod 15 to move horizontally from the sewage inlet trough 3 side to the steel belt skimmer 2 side along the horizontal section 1302, and then along the arc-shaped lifting section 1303 The process of returning to the initial position in the reverse arc-shaped moving trajectory, so during this period, the two traction mechanisms 6 can realize the process of dragging the floating oil boom 16 through the two ends of the floating oil boom 16 to move on the top of the sewage 5 (the floating oil boom is widely used for oil layer separation on the sea surface and the lake surface, and can float directly on the water surface. Its detailed structure and specific working principle are already known public technologies, so they are not described in detail here). When the extension rod 15 moves horizontally, the floating oil boom 16 is dragged from the sewage inlet tank 3 side to the steel belt type oil skimmer 2 side, and the oil layer 501 that continuously flows down from the sewage inlet tank 3 is gathered toward the skimming steel belt 201, thereby improving the contact efficiency between the skimming steel belt 201 and the oil layer 501. When the extension rod 15 moves in an arc-shaped moving trajectory, the floating oil boom 16 is lifted as a whole to avoid contact with the oil layer 501, and then returns to the initial position on the sewage inlet tank 3 side, and the cycle is repeated until the oil layer 501 is cleaned.

[0041] Example 3

[0042] In view of the above-mentioned embodiment 1 and embodiment 2, for further description, refer to Figure 3-Figure 7 , through the contact pile 1101 located inside the strip travel groove 901, the outer side of the contact pile 1101 is rotatably connected with a wear-resistant bushing 1, the outer side of the contact pile 1101 is in contact with the inner wall of the strip travel groove 901 through the wear-resistant bushing 1, and the structural design that the connecting shaft section is in contact with the inner wall of the strip travel groove 901 and the limit travel groove 1301 through the wear-resistant bushing 2 1405 and the wear-resistant bushing 3 1406 respectively, so that the contact pile 1101 and the connecting shaft section of the connecting member 14 can realize both rotational connection and sliding connection at the contact position, thereby avoiding interference during operation and reducing the probability of wear at the connection;

[0043] The adjusting nut 1501 threadedly connected to the top of the extension rod 15 can adjust the height of the extension rod 15, thereby controlling the extension rod 15 to be lifted up along with the connecting piece 14. The floating oil boom 16 connected to the bottom can reduce the probability of contact with the oil layer 501, thereby avoiding driving the oil layer 501 back to the sewage inlet tank 3 side.

[0044] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oily wastewater treatment device, comprising a wastewater tank (1), characterized in that: Both sides of the top of the sewage tank (1) are provided with traction mechanisms (6) of the same structure, and the two traction mechanisms (6) have the same structure and are arranged symmetrically in opposite directions to each other; The traction mechanism (6) comprises a second column (7) fixedly mounted on the top of the sewage tank (1), the top of the second column (7) being rotatably connected to a rotating shaft (8), and a rocking arm (9) being fixedly mounted on one end of the rotating shaft (8), and a strip-shaped travel groove (901) being provided inside the rocking arm (9), a driving motor (10) being fixedly mounted on one side of the second column (7), and a driving shaft on one side of the driving motor (10) passing through the other side of the second column (7), a driving disc (11) being fixedly mounted on the end of the driving shaft on one side of the driving motor (10), and a contact pile (1101) being fixedly welded on the edge of the driving disc (11); A limit ring 1 (12) and a limit ring 2 (13) are provided at the bottom of the driving disc (11), and a limit stroke groove (1301) is formed between the limit ring 1 (12) and the limit ring 2 (13), the limit stroke groove (1301) comprising a horizontal section (1302) and an arc-shaped raised section (1303), a connecting piece (14) is provided at the intersection of the strip stroke groove (901) and the limit stroke groove (1301), an internal threaded hole (1401) is provided on the connecting piece (14), an extension rod (15) is threadedly connected to the inside of the internal threaded hole (1401), an adjusting nut (1501) is threadedly connected to the top of the extension rod (15), a ferrule (1502) is fixedly welded to the bottom of the extension rod (15), and the ferrules (1502) of the two traction mechanisms (6) are connected via a floating oil boom (16); One end of the contact pile (1101) extends to the outside of the rocking rod (9) through the strip-shaped travel groove (901); The connecting piece (14) comprises an exposed head section (1402), and the internal threaded hole (1401) is formed on the exposed head section (1402); A steel belt type oil skimmer (2) and a sewage inlet trough (3) are respectively arranged on the other two sides of the top of the sewage tank (1); one side of the steel belt type oil skimmer (2) is fixedly installed on the top of the sewage tank (1) via a column (4); an oil skimmer steel belt (201) is arranged on the steel belt type oil skimmer (2); sewage (5) is filled inside the sewage tank (1), and an oil layer (501) floats on the top of the sewage (5); the bottom of the oil skimmer steel belt (201) extends through the oil layer (501) to the inside of the sewage (5).

2. The oily wastewater treatment equipment according to claim 1 is characterized in that: An external thread structure is provided at one end of the contact pile (1101), a fastening nut and a gasket are threadedly connected to one end of the contact pile (1101), a wear-resistant bushing is rotatably connected to the outside of the contact pile (1101) located inside the strip travel groove (901), and the outside of the contact pile (1101) contacts the inner wall of the strip travel groove (901) through the wear-resistant bushing.

3. The oily wastewater treatment equipment according to claim 1 is characterized in that: A connecting shaft section is fixedly welded to one side of the exposed head section (1402), and one end of the connecting shaft section passes through the inside of the strip travel groove (901) and the limit travel groove (1301) in sequence. An external thread structure is provided at one end of the connecting shaft section. A fastening nut 2 and a gasket 2 (1403) are threadedly connected to one end of the connecting shaft section. A gasket 3 (1404) is sleeved on the connecting shaft section located at the connection between the connecting shaft section and the exposed head section (1402). A wear-resistant bushing 2 (1405) and a wear-resistant bushing 3 (1406) are also rotatably connected to the connecting shaft section. The connecting shaft section contacts the inner walls of the strip travel groove (901) and the limit travel groove (1301) respectively through the wear-resistant bushing 2 (1405) and the wear-resistant bushing 3 (1406).

4. The oily wastewater treatment equipment according to claim 1 is characterized in that: A plurality of heightening columns (1201) are fixedly welded to one side of the first limiting ring (12) and the second limiting ring (13), and the plurality of heightening columns (1201) are fixedly installed on the second upright column (7) by means of bolts.

5. The oily wastewater treatment equipment according to claim 1 is characterized in that: The inner wall widths of the strip travel groove (901) and the limit travel groove (1301) are equal.

Images