CN212050631U - Oil scraping device and sewage treatment tank - Google Patents

Abstract

The utility model discloses an oil scraping device and sewage treatment pond belongs to oil field sewage treatment technical field. The method comprises the following steps: the oil scraping plate comprises a fixed support, a first rotary driving pair, a connecting support, a second rotary driving pair, an oil scraping plate support and an oil scraping plate. The first rotary driving pair is arranged on the fixed support, and the rotary central line of the first rotary driving pair is vertical to the liquid level of the sewage treatment tank. The connecting bracket is rotatably connected to the fixed bracket through a first rotary driving pair. The second rotary driving pair is arranged on the connecting support, and the rotary central line of the second rotary driving pair is parallel to the liquid level of the sewage treatment tank. The oil scraping plate support is rotatably connected to the connecting support through a second rotary driving pair. The oil scraping plate is arranged on the oil scraping plate support and extends along the extending direction of the rotary central line of the second rotary driving pair. The oil scraping device can improve the oil collecting efficiency of the sewage treatment tank.

Description

Oil scraping device and sewage treatment tank

Technical Field

The utility model relates to an oil field sewage treatment technical field, in particular to oil scraping device and sewage treatment pond.

Background

Along with the continuous exploitation of the oil field, when the underground oil quantity is low and is difficult to be pumped out by the oil pumping unit, the oil extraction needs to be carried out by adopting a water injection oil extraction mode. When carrying out preliminary separation to the oil water mixture who gathers through water injection oil recovery, need put into the medicament in the oil water mixture, realize the oil-water separation purpose, utilize subsequently to receive oily equipment and retrieve the oil slick that floats on the surface of water. In the process, oily sewage is generated, and further oil-water separation and oil collection are carried out on the oily sewage in a sewage treatment tank.

An oilfield wastewater treatment tank in the related art generally has a water inlet end and a water outlet end, wherein the water outlet end is provided with an oil collecting tank for collecting floating oil. When oil is collected, a worker usually uses a long-handle dip net to sweep oily sewage in the sewage treatment tank, so that the sewage generates waves to drive floating oil floating on the water surface to flow to the water outlet end of the sewage treatment tank and finally enter an oil collecting groove at the water outlet end.

The long-handle dip net is used for collecting oil manually, a floating oil layer can be stirred when the dip net moves oily sewage, and a part of floating oil and impurities sink into a sewage layer, so that the floating oil entering an oil collecting groove is mixed with sewage to influence the oil collecting effect. Meanwhile, the area of the sewage treatment pool is large, the coverage area of the oily sewage drawn by the shoveling net is small, and the shoveling net can cause the backflow of the oily sewage in the back-and-forth drawing process, so that the oil recovery efficiency is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an oil scraping device and sewage treatment pond can improve oil recovery efficiency on the basis of guaranteeing the oil recovery effect. The technical scheme is as follows:

in a first aspect, an embodiment of the present invention provides an oil scraping device, including: a fixed bracket, a first rotary driving pair, a connecting bracket, a second rotary driving pair, an oil scraping plate bracket and an oil scraping plate,

the first rotary driving pair is arranged on the fixed support, and the rotary central line of the first rotary driving pair is vertical to the liquid level of the sewage treatment pool;

the connecting bracket is rotatably connected to the fixed bracket through the first rotary driving pair;

the second rotary driving pair is arranged on the connecting bracket, and the rotary central line of the second rotary driving pair is parallel to the liquid level of the sewage treatment pool;

the oil scraping plate bracket is rotatably connected to the connecting bracket through the second rotary driving pair;

the oil scraping plate is installed on the oil scraping plate support and extends along the extending direction of the rotary center line of the second rotary driving pair.

Optionally, the oil scraping plate support comprises a first frame and a second frame, the second frame is in an axisymmetric pattern, the first frame is vertically connected to a symmetry axis of the second frame, and the oil scraping plate is connected to the first frame.

Optionally, the first frame is a right trapezoid, the second frame is an isosceles triangle, the lower base of the first frame is perpendicular to and fixedly connected with the base of the second frame, the vertex of the second frame is connected with the upper base of the first frame, and the symmetry axis of the second frame is perpendicular to the upper base and the lower base of the first frame.

Optionally, the oil scraping plate support further comprises a connecting plate perpendicular to a rotation center line of the second rotation driving pair, and the first frame and the second frame are connected with the second rotation driving pair through the connecting plate.

Optionally, the frizing board includes relative first side and second side, first side is for being close to the frizing side of sewage treatment pond liquid level, the second side is equipped with shelter from structure, shelter from structure to keeping away from the lateral buckling of frizing board support.

Optionally, the oil scraping plate is detachably connected with the oil scraping plate bracket.

Optionally, the oil scraping plate is an aluminum alloy plate.

Optionally, the fixing bracket, the connecting bracket and the oil scraper plate bracket are steel welded structures.

Optionally, the first and second swing drive pairs are tooth-type swing drive pairs or worm and gear-type swing drive pairs.

In a second aspect, an embodiment of the present invention provides a sewage treatment tank, which includes two oil scrapers as described in the first aspect, two fixing brackets of the oil scrapers are disposed side by side at the middle part of the tank wall of the sewage treatment tank.

The embodiment of the utility model provides a beneficial effect that technical scheme brought includes at least:

this frizing device is when receiving oil, the frizing on the frizing support is driven through the vice rotation of first rotary drive goes on in oily sewage, the frizing rotates on the plane that is on a parallel with oily sewage liquid level all the time, its motion is mild, avoided receiving oil through artifical long handle diddle-net that uses, can stir the oil slick layer when the diddle-net moves oily sewage, partly oil slick and impurity sink in the sewage layer, make the oil slick that gets into in the oil receiving groove thoughtlessly sewage, influence the oil receiving effect. Meanwhile, in the reduction process of one-time oil collecting process, the oil scraping plate on the oil scraping plate support is driven to leave the liquid level of the oily sewage through the rotation of the second rotary driving pair, so that the situation that the oil scraping plate applies reverse thrust to the oily sewage in the process of reducing the oil scraping device to the initial position to cause the backflow of the oily sewage is avoided, and the oil collecting efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a front view of an oil scraping device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first rotary drive pair according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second swing driving pair according to an embodiment of the present invention;

fig. 4 is a top view of an oil scraping device according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an oil scraping plate according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a sewage treatment tank with an oil scraping device in an initial state according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a sewage treatment tank with an oil scraping device in an oil receiving state according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an oil scraping plate provided by an embodiment of the present invention after rotation.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an oil scraping device according to an embodiment of the present invention. As shown in fig. 1, the oil scraping device includes: the device comprises a fixed support 1, a first rotary driving pair 2, a connecting support 3, a second rotary driving pair 4, an oil scraping plate support 5 and an oil scraping plate 6. The first rotary driving pair 2 is arranged on the fixed support 1, and the rotary central line 2a of the first rotary driving pair 2 is vertical to the liquid level of the sewage treatment pool. The connecting bracket 3 is rotatably connected on the fixed bracket 1 through the first rotary driving pair 2. The second rotary driving pair 4 is arranged on the connecting bracket 3, and the rotary central line 4a of the second rotary driving pair 4 is parallel to the liquid level of the sewage treatment pool. The wiper blade support 5 is rotatably connected to the connecting support 3 via a second pivot bearing 41. The oil scraping plate 6 is attached to the oil scraping plate holder 5 and extends in the extending direction of the turning center line 4a of the second turning drive pair 4.

Fig. 2 is a schematic structural diagram of a first rotary driving pair according to an embodiment of the present invention. As shown in fig. 2, first swing drive pair 2 includes a first swing support 21, and first swing support 21 includes an outer race 211 and an inner race 212. As shown in fig. 1 and 2, one of the outer ring 211 and the inner ring 212 of the first slewing bearing 21 is fixedly connected to the fixed bracket 1. The connecting bracket 3 is mounted on the other of the outer race 211 and the inner race 212 of the first slewing bearing 21.

Fig. 3 is a schematic structural diagram of a second swing driving pair according to an embodiment of the present invention. As shown in fig. 3, second swing drive pair 4 includes a second swing support 41, and second swing support 41 includes an outer race 411 and an inner race 412. Referring to fig. 1 and 3, one of the outer ring 411 and the inner ring 412 of the second slewing bearing 41 is mounted on the connecting bracket 3, and the slewing center line of the second slewing drive pair 4 is parallel to the liquid level of the sewage treatment tank. The wiper blade mount 5 is mounted on the other of the outer race 411 and the inner race 412 of the second slewing bearing 41.

In actual work, the connecting support 3, the oil scraping plate support 5 and the oil scraping plate 6 connected to the oil scraping plate support 5 are driven to rotate around the rotation central line 2a of the first rotary driving pair 2 through the rotation of the first rotary driving pair 2, and the oil scraping plate 6 is immersed in oily sewage, so that the thrust of the oil scraping plate 6 can form waves, and the effect of pushing floating oil in a sewage treatment pool is achieved. When the oily sewage approaches the water outlet end of the sewage treatment tank, the wave height of a part of the floating oil pushed by the oil scraping plate 6 exceeds the height of the oil collecting tank at the water outlet end, and the part of the floating oil is pushed into the oil collecting tank by the oil scraping plate. After the primary oil collecting process is completed, the second rotary driving pair 4 drives the oil scraping plate support 5 and the oil scraping plate 6 connected to the oil scraping plate support 5 to rotate around the rotary central line 4a of the second rotary driving pair 4, so that the oil scraping plate 6 leaves oily sewage, then the oil scraping plate 6 rotates through the first rotary driving pair 2, the connecting support 3 is driven, the oil scraping plate support 5 and the oil scraping plate 6 connected to the oil scraping plate support 5 return to the initial position, the oil scraping plate 6 leaves the oily sewage, so that the oil scraping device can be prevented from being restored to the initial state in the process, the oil scraping plate 6 connected to the oil scraping plate support 5 provides opposite thrust to the oily sewage, and the oil collecting efficiency is influenced. And finally, the second rotary driving pair 4 rotates to drive the oil scraping plate bracket 5 and the oil scraping plate 6 to rotate, so that the oil scraping plate 6 is immersed in the oily sewage again to finish one-time oil scraping operation.

This frizing device is when receiving oil, the frizing on the frizing support is driven through the vice rotation of first rotary drive goes on in oily sewage, the frizing rotates on the plane that is on a parallel with oily sewage liquid level all the time, its motion is mild, avoided receiving oil through artifical long handle diddle-net that uses, can stir the oil slick layer when the diddle-net moves oily sewage, partly oil slick and impurity sink in the sewage layer, make the oil slick that gets into in the oil receiving groove thoughtlessly sewage, influence the oil receiving effect. Meanwhile, in the reduction process of one-time oil collecting process, the oil scraping plate on the oil scraping plate support is driven to leave the liquid level of the oily sewage through the rotation of the second rotary driving pair, so that the situation that the oil scraping plate applies reverse thrust to the oily sewage in the process of reducing the oil scraping device to the initial position to cause the backflow of the oily sewage is avoided, and the oil collecting efficiency is improved.

Optionally, first swing drive pair 2 and second swing drive pair 4 are a toothed swing drive pair or a worm and gear swing drive pair. The worm-gear type is superior to the gear type in terms of bearing capacity, and when the worm drive is adopted, the bearing capacity, the deformation resistance and the transmission rigidity are stronger, and the gear type rotary driving pair is stronger in terms of transmission efficiency. In the embodiment of the utility model provides an in, as long as can realize driving linking bridge 3 and the rotation of frizing support 5 can, the utility model discloses do not limit to this.

Exemplarily, in the embodiment of the present invention, the first swing drive pair 2 and the second swing drive pair 4 have the same structure, and both adopt a worm swing drive pair with model number SSDX-LE0162(7 "), and the power distribution machine has a rated rotation speed of 1300r/min, a rated power of 120W, 380V; a reducer reduction ratio 24; explosion protection class EXdIIBT4, protection class IP 65. In other possible implementations, the first and second swing drive pairs 2 and 4 may also use different configurations and/or types of swing drive pairs, which is not limited by the present invention.

Illustratively, the fixing bracket 1 and the connecting bracket 3 may be both steel weldments. In the embodiment of the present disclosure, the fixing bracket is made of a steel plate with a model number of 3280 x4450mm S30408, and the connecting bracket 3 is made of a steel plate with a model number of 6200 x400mm S30408 by welding.

Fig. 4 is a top view of a structure of an oil scraping device according to an embodiment of the present invention. Referring to fig. 1 and 4, the wiper blade support 5 includes a first frame 51 and a second frame 52 perpendicular to each other, the second frame 52 is formed in an axisymmetric pattern, the first frame 51 is perpendicularly attached to the axis of symmetry of the second frame 52, and the wiper blade 6 is attached to the first frame 51.

Optionally, in the embodiment of the present invention, the first frame 51 and the second frame 52 are formed by welding stainless steel rectangular tubes, wherein the frame plane of the second frame 52 is an axisymmetric pattern, the frame plane enclosed by the first frame 51 and the frame plane enclosed by the second frame 52 are perpendicular to each other, the symmetry axis 52a of the first frame 51 and the second frame 52 is connected, and then the frame structure is welded into a cross shape, so as to increase the mechanical strength of the oil scraping plate bracket 5, prevent the oil scraping plate bracket 5 from being deformed and damaged due to the excessive stress when the oil scraping plate 6 is driven to push the oily sewage, and increase the service life of the oil scraping device.

By providing the oil scraping plate support 5 as a frame-shaped structure formed by welding the first frame 51 and the second frame 52, the consumption of materials can be reduced on the basis of ensuring the structural strength, and the processing cost can be reduced. Simultaneously wind and the oily sewage that splashes can pass through in the gap of frame construction, reduce the resistance of wind and oily sewage that receive when oil scraping plate support 5 rotates along with linking bridge 3, reduce the energy consumption of first gyration drive pair 2 and second gyration drive pair 4, the energy can be saved, further reduce cost.

For example, in the disclosed embodiment, the wiper blade support 5 may be welded using a stainless steel rectangular tube model 60 × 40 × 2mmS 30408.

Optionally, the oil scraping plate bracket 5 further includes a connecting plate 53 perpendicular to the rotation center line 4a of the second rotation driving pair 4, the first frame 51 and the second frame 52 are both fixedly connected to the connecting plate 53, and the first frame 51 and the second frame 52 are connected to the second rotation driving pair 4 through the connecting plate 53. As shown in fig. 3, the second slewing bearing 41 in the second slewing drive pair 4 has an outer ring 411 and an inner ring 412 which can rotate relatively, and a plurality of threaded holes 413 are axially distributed on the second slewing bearing 41, and the oil scraper support 5 and the second slewing bearing 41 are in threaded connection through the threaded holes 413. Because the connecting surfaces of the oil scraping plate support 5 and the second slewing bearing 41 are both end surfaces of stainless steel rectangular pipes, the pipe walls of the stainless steel rectangular pipes are very thin, if holes are punched in the pipe walls of the stainless steel rectangular pipes and then the stainless steel rectangular pipes are connected with the threaded holes 413 in the second slewing bearing 41 through bolts, when the second slewing bearing 41 drives the oil scraping plate support 5 to rotate, the connecting ends of the oil scraping plate support 5 and the second slewing bearing 41 are likely to break due to insufficient mechanical strength. And through setting up the connecting plate 53 between the end face of the second slewing bearing 41 and the oil scraping plate support 5, weld the end face of the first frame 51 and the second frame 52 close to the second slewing bearing 41 on the connecting plate 53 first, open the screwed hole corresponding to screwed hole 413 on the connecting plate 53 again, connect the inner circle 412 of the oil scraping plate support 5 and the second slewing bearing 41 through the bolt finally, can increase the mechanical strength of the joint part, it is not fragile, have further improved the service life of the oil scraping device.

For example, the shape of the connecting plate may be a circle corresponding to the second rotary support 41, or may be a square, a rectangle, or other shapes, as long as sufficient mechanical strength of the connecting portion between the oil scraping plate support 5 and the second rotary support 41 can be ensured, which is not limited by the present invention.

Alternatively, as shown in fig. 1 and 4, the first frame 51 has a right trapezoid shape, the second frame 52 has an isosceles triangle shape, the bottom side 511 of the first frame 51 is perpendicular to and fixedly connected with the bottom side 521 of the second frame 52, the vertex of the second frame 52 is connected with the top side 512 of the first frame 51, and the symmetry axis 52a of the second frame 52 is perpendicular to the top side 512 and the bottom side 511 of the first frame 51. In the embodiment of the present invention, the frame plane of the first frame 51 is perpendicular to the liquid level of the sewage treatment tank, the first frame 51 has a long lower bottom edge 511, an upper bottom edge 512, a bevel edge 513 and a square edge 514, wherein the upper bottom edge 512 and the lower bottom edge 511 are parallel and perpendicular to the square edge 514, the lower bottom edge 511 is connected with the second rotary driving pair 4, the liquid level of the sewage treatment tank is kept away from by the bevel edge 513, and the oil scraping plate 6 is connected on the square edge 514 close to the liquid level of the sewage treatment tank. The frame plane of the second frame 52 is parallel to the liquid level of the sewage treatment tank, the second frame 52 is provided with a bottom edge 521 and two inclined waists 522, wherein the bottom edge 521 is perpendicular to and fixedly connected with the lower bottom edge 511 of the first frame 51, the vertex of the second frame 52, namely the intersection point of the two inclined waists 522 is connected with the intersection point of the upper bottom edge 512 and the inclined edge 513 of the first frame 51, and the symmetry axis 52a of the second frame 52 is perpendicular to the upper bottom edge 512 and the lower bottom edge 511 of the first frame 51. The triangle has stability, and the outer frames of the first frame 51 and the second frame 52 which are cross-welded to form a cross structure are set to be a frame structure with the triangle, so that the structural stability of the oil scraping plate bracket 5 is further improved while the processing materials are saved.

Fig. 5 is a schematic structural diagram of an oil scraping plate according to an embodiment of the present invention. As shown in fig. 5, the oil scraping plate 6 is detachably attached to the oil scraping plate holder 5. In the use of frizing device, frizing 6 is immerged in including greasy dirt aquatic for a long time, need change after being corroded and warping, through setting frizing 6 and frizing 5 support to dismantling to be connected, dismantles when convenient not using and gets off to maintain or change after damaging.

Exemplarily, in the embodiment of the present disclosure, the oil scraping plate 6 is connected to the oil scraping plate support 5 through a bolt, and in other possible implementations, the oil scraping plate 6 and the oil scraping plate support 5 may be detachably connected through other manners such as a snap connection, which is not limited by the present disclosure.

Optionally, the oil scraping plate 6 includes a first side 6a and a second side 6b opposite to each other, the first side 6a is an oil scraping side close to the liquid level of the sewage treatment tank, the second side 6b is provided with a shielding structure 61, and the shielding structure 61 is bent to a side far away from the oil scraping plate support 5. The embodiment of the utility model provides an in, the first side 6a of frizing board 6 is as the frizing side to dip in oily sewage, can form the wave when first side 6a promotes oily sewage, crosses easily that frizing board 6 goes up and second side 6b relative with first side 6a sputters on frizing board support 5, causes the corruption of frizing board support 5 easily after using for a long time. Set up the structure 61 that shelters from to keeping away from the one side buckling of frizing support 5 at the second side 6b of frizing 6, can block the oily sewage of sputtering, prevent that oily sewage from causing the corruption to frizing support 5, further improved the life of frizing device. Exemplarily, in the embodiment of the present invention, the shielding structure 61 is a curved surface bent to a side away from the oil scraping plate support 5, and the included angle of the curved surface is 60 °.

Alternatively, the oil scraping plate 6 is an aluminum alloy plate. The aluminum alloy has high strength, good plasticity, convenient processing and corrosion resistance, is not easy to corrode and damage after being immersed in oily sewage for a long time, reduces the replacement frequency and further prolongs the service life of the oil scraping device. Exemplarily, in the embodiment of the present invention, the oil scraping plate 6 is an aluminum alloy plate having a thickness of 5 mm.

Fig. 6 is a schematic structural diagram of a sewage treatment tank with an oil scraping device in an initial state according to an embodiment of the present invention. As shown in fig. 6, the embodiment of the utility model provides a sewage treatment tank is still provided, including intaking end an and play water end b, this sewage treatment tank still includes two sets of frizing devices as shown in fig. 1 and fig. 4, and two sets of frizing devices's fixed bolster 1 sets up in parallel in the pool wall middle part of a water end b. This frizing device is when receiving oil, the frizing on the frizing support is driven through the vice rotation of first rotary drive goes on in oily sewage, the frizing rotates on the plane that is on a parallel with oily sewage liquid level all the time, its motion is mild, avoided receiving oil through artifical long handle diddle-net that uses, can stir the oil slick layer when the diddle-net moves oily sewage, partly oil slick and impurity sink in the sewage layer, make the oil slick that gets into in the oil receiving groove thoughtlessly sewage, influence the oil receiving effect. Meanwhile, in the reduction process of one-time oil collecting process, the oil scraping plate on the oil scraping plate support is driven to leave the liquid level of the oily sewage through the rotation of the second rotary driving pair, so that the situation that the oil scraping plate applies reverse thrust to the oily sewage in the process of reducing the oil scraping device to the initial position to cause the backflow of the oily sewage is avoided, and the oil collecting efficiency is improved.

In practical use, the configuration of the oil scraping device shown in fig. 1 and 4 is combined, and the first swing drive pair 2 and the second swing drive pair 4 can be connected to a PLC control circuit, so that the oil scraping device can be controlled on a PLC control computer.

Fig. 7 is a schematic structural diagram of a sewage treatment tank with an oil scraping device in an oil receiving state according to an embodiment of the present invention. The operation of the sewage treatment tank will be described by way of example with reference to fig. 1, 4 and 6. The staff passes through the vice 2 of the first slewing drive of remote control automatic start, the rotatory connecting support 3 rotation of driving of first slewing bearing 21, connecting support 3 drives the frizing support 5 and rotates on the plane that is on a parallel with sewage treatment pond liquid level, frizing 6 of frizing support 5 lower part fixed immerses in the liquid level of sewage treatment pond, frizing 6 is rotatory along with frizing support 5 and connecting support 3, push away the surface of water oil slick to oil receiving tank, drive frizing 6 and oil receiving tank when frizing support 5, the pool wall of outlet end b reaches parallel state promptly, when the position shown in figure 7 promptly, second slewing bearing 41 stall in the vice 4 of second slewing drive.

Fig. 8 is a schematic structural view of an oil scraping plate provided by an embodiment of the present invention after rotation. With reference to fig. 5 and 6, under the control of the PLC module, the second slewing drive pair 4 is remotely controlled to operate, the second slewing drive pair 4 is automatically started by remote control, the second slewing bearing 41 rotates to drive the oil scraping plate support 5 to rotate to lift the oil scraping plate 6 from the oily sewage, and when the oil scraping plate support rotates clockwise to 45 degrees, the second slewing bearing 41 is automatically stopped by remote control.

And then the first pivoting support 21 is automatically started by remote control to drive the connecting bracket 3 to rotate reversely, the connecting bracket 3 is rotated to the initial position, and the oil scraping device returns to the state shown in fig. 6. The remote control automatically stops the first swing drive pair 2.

And then the second rotary driving pair 4 is automatically started through remote control, the second rotary support 41 drives the oil scraping plate bracket 5 to rotate 45 degrees anticlockwise, so that the oil scraping plate 6 is immersed in the oily sewage again, the second rotary driving pair 4 is automatically stopped through remote control, the second rotary support 41 stops rotating, and a group of oil scraping operation is completed. The other adjacent oil scraper device operates in the same manner as the one of the first and second rotary drive pairs 2, 4, but in the opposite direction of rotation.

The number of times of finishing the oil scraping operation can be remotely controlled by observing the floating oil amount of the liquid surface according to a camera arranged on the site of the sewage treatment tank. The staff passes through PLC control circuit, can carry out the frizing operation outside room formula VOCs device, has avoided the staff to carry out the manual work to the scene and has received oil, has reduced staff's work load, has also guaranteed that staff's is healthy.

The above description is only an optional embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An oil scraping device, characterized by comprising: a fixed bracket (1), a first rotary driving pair (2), a connecting bracket (3), a second rotary driving pair (4), an oil scraping plate bracket (5) and an oil scraping plate (6),

the first rotary driving pair (2) is arranged on the fixed support (1), and the rotary central line of the first rotary driving pair (2) is vertical to the liquid level of the sewage treatment pool;

the connecting bracket (3) is rotatably connected to the fixed bracket (1) through the first rotary driving pair (2);

the second rotary driving pair (4) is arranged on the connecting support (3), and the rotary central line of the second rotary driving pair (4) is parallel to the liquid level of the sewage treatment pool;

the oil scraping plate bracket (5) is rotatably connected to the connecting bracket (3) through the second rotary driving pair (4);

the oil scraping plate (6) is installed on the oil scraping plate support (5) and extends along the extending direction of the rotary central line of the second rotary driving pair (4).

2. A scraper device according to claim 1, characterized in that said scraper blade support (5) comprises a first frame (51) and a second frame (52), said second frame (52) being in an axisymmetric pattern, said first frame (51) being perpendicularly attached to the axis of symmetry of said second frame (52), said scraper blade (6) being attached to said first frame (51).

3. The oil scraping device according to claim 2, characterized in that the first frame (51) is in the shape of a right trapezoid, the second frame (52) is in the shape of an isosceles triangle, the lower base (511) of the first frame (51) and the base (521) of the second frame (52) are perpendicular to each other and fixedly connected, the vertex of the second frame (52) is connected with the upper base (512) of the first frame (51), and the symmetry axis (52a) of the second frame (52) is perpendicular to the upper base (512) and the lower base (511) of the first frame (51).

4. A scraper device according to claim 2, characterized in that the scraper support (5) further comprises a connecting plate (53) perpendicular to the centre line of revolution of the second revolute drive pair (4), the first frame (51) and the second frame (52) being connected to the second revolute drive pair (4) via the connecting plate (53).

5. The oil scraping device of claim 1, wherein the oil scraping plate (6) comprises a first side edge (6a) and a second side edge (6b) which are opposite to each other, the first side edge (6a) is an oil scraping side edge close to the liquid level of the sewage treatment tank, the second side edge (6b) is provided with a shielding structure (61), and the shielding structure (61) is bent to one side far away from the oil scraping plate support (5).

6. A scraper device according to any of claims 1-5, characterized in that the scraper blade (6) is detachably connected to the scraper blade holder (5).

7. A scraper device according to any of claims 1-5, characterized in that said scraper plate (6) is an aluminium alloy plate.

8. A scraper device according to any of claims 1-5, characterized in that the fixing bracket (1), the connecting bracket (3) and the scraper bar bracket (5) are steel welded structures.

9. A scraping device according to any claim 1-5, characterized in that the first rotary drive pair (2) and the second rotary drive pair (4) are a toothed rotary drive pair or a worm-and-gear rotary drive pair.

10. A wastewater treatment basin, characterized in that it comprises two oil scrapers according to any one of claims 1-9, and the two oil scrapers' fixing brackets (1) are arranged side by side in the middle of the basin wall of the wastewater treatment basin.

Images