A skid-mounted oily wastewater treatment device

Abstract

The present application belongs to the technical field of sewage treatment, and particularly relates to a skid-mounted oily sewage treatment device, aiming at solving the problem that the replacement of the filter screen of the existing skid-mounted oily sewage treatment device needs to stop and open the cover, affecting the efficiency. The present application comprises a skid-mounted oily sewage treatment device, comprising a box body (1), a liquid inlet (5) arranged in the middle of the upper cover of the box body (1), a filter plate (4) arranged in the box body (1) and located below the liquid inlet (5), and a moving device, wherein the filter plate (4) is arranged on the moving device and moves with the moving device. The present application can quickly replace the filter plate and improve the treatment efficiency of the oily sewage device.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and specifically relates to a skid-mounted oily wastewater treatment device. Background Technology

[0002] Oilfield development generates large quantities of waste drilling fluid, fracturing flowback fluid, and waste fluid from oil and water well operations, which contain waste oil, various suspended solids, and other harmful substances. This oily wastewater is one of the main pollutants generated during oilfield development, and if it is not treated in a timely manner, it will have a serious impact on the production area and the surrounding environment.

[0003] With increasingly stringent national environmental protection requirements, the reduction, harmlessness, and resource recovery of oily wastewater will become an inevitable trend in the development of oilfield wastewater treatment technology. Skid-mounted oily wastewater treatment units are generally used for this purpose.

[0004] However, existing skid-mounted oily wastewater treatment devices require the use of filter screens to filter oily wastewater. After prolonged use, impurities in the oily wastewater will clog the filter screens. In order not to affect the filtration efficiency of the filter screens, they need to be replaced. The filter screens of existing skid-mounted oily wastewater treatment devices are located inside the oily wastewater treatment device, which makes replacement troublesome. It requires stopping the machine and opening the cover to replace the filter screens, which seriously affects the wastewater treatment efficiency. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, namely the efficiency issue arising from the need to shut down and open the cover for filter replacement in existing skid-mounted oily wastewater treatment devices, this invention provides a skid-mounted oily wastewater treatment device.

[0006] The technical solution of this invention includes:

[0007] A skid-mounted oily wastewater treatment device includes a housing (1) and an inlet (5) located in the middle of the top cover of the housing (1), and a filter plate (4) located inside the housing (1) and below the inlet (5). The device is characterized in that it also includes a moving device, on which the filter plate (4) is mounted and moves.

[0008] As an optional technical solution, the moving device includes a moving frame (204), which is inserted into and passes through the through holes (11) on both sides of the box body (1). The moving frame (204) is provided with two filter plates (4) on the left and right sides. When one filter plate (4) moves out of the box body (1), the other filter plate (4) is located at the working position below the liquid inlet (5).

[0009] As an alternative technical solution, a slot is provided on the outside of the movable frame (204), and the filter plate (4) is inserted or removed along the slot.

[0010] As an alternative technical solution, the mobile device further includes a reciprocating drive device, which is connected to the mobile frame (204) and drives it to reciprocate along the through holes (11) on both sides of the housing (1).

[0011] As an optional technical solution, the reciprocating drive device includes a lead screw (202) disposed in the housing (1) and a motor (201) for driving the lead screw (202) to rotate, and also includes a nut fixedly connected to the moving frame (204), the nut being engaged and sleeved on the lead screw (202).

[0012] As an alternative technical solution, the reciprocating drive device is a gear and rack device or a chain and sprocket device.

[0013] As an optional technical solution, each filter plate (4) is provided with a limiting device. The limiting device includes a baffle (310), a moving rod (302) is provided on the baffle (310), a spring (303) is sleeved on the moving rod (302), a moving block (304) is provided at the front end of the moving rod (302), a transmission rod (305) is respectively hinged to both ends of the moving block (304), a positioning rod (306) is hinged to the other end of the transmission rod (305), the positioning rod (306) is slidably connected to the limiting seat (307) fixed to the moving frame (204), a connecting plate (308) is fixedly provided on both sides of the filter plate (4), a positioning hole (309) is provided on the connecting plate (308), and the positioning rod (306) is inserted into the positioning hole (309). The moving device also includes a guiding device, which includes a guide seat (22) and a guide rod (21). The guide seat (22) is fixedly connected to the moving frame (204), and the guide rod (21) is fixedly installed inside the box (1). The guide seat (22) is sleeved on the guide rod (21) and moves along its axial direction.

[0014] As an alternative technical solution, the lower part of the box (1) is provided with two partitions (24), which divide the lower space of the box (1) into three independent spaces, which are used to store filtered oily wastewater, separated oil and wastewater respectively. The side walls of the box (1) of the three independent spaces are respectively provided with discharge pipes.

[0015] As an alternative technical solution, an oil pump is installed at the top and a water pump is installed at the bottom of the partition of the space for storing oily wastewater.

[0016] As an optional technical solution, the lower part of the housing (1) is provided with rollers or casters.

[0017] As an alternative technical solution, a handle (10) is provided on the outside of the filter plate (4).

[0018] The beneficial effects of this invention are:

[0019] (1) The skid-mounted oily wastewater treatment device provided by the present invention has a movable frame with double filter plates. The movable frame moves left and right along the box body, so that the filter plate to be replaced extends out of the box body with the movable frame, which facilitates the replacement of the filter plate.

[0020] (2) The skid-mounted oily wastewater treatment device provided by the present invention is also equipped with a moving mechanism. The moving mechanism drives the moving frame and filter plate to move. When the filter plate on the right side is located at the lower end of the liquid inlet, the filter plate on the left side extends out of the box. The filter plate after extending out of the box is convenient for workers to replace, thereby improving the maintenance efficiency of workers. At the same time, when replacing the filter plate on the left side, since the filter plate on the right side is located at the lower end of the liquid inlet, the filter plate on the right side can continue to filter the oily wastewater, so that the machine does not need to be shut down for a long time when replacing the filter plate, thereby improving the filtration efficiency.

[0021] (3) The skid-mounted oily wastewater treatment device provided by the present invention, by setting a fixed plate, a moving rod, a spring, a moving block, a transmission rod, a positioning rod, a limiting seat, a connecting plate, a positioning hole and a baffle, when the moving frame moves, it drives the baffle to move. When the baffle contacts the inner wall of the box, the moving rod continues to move with the moving frame and drives the moving block to move. With the cooperation of the transmission rod, the positioning rod slides inside the limiting seat. When the moving frame reaches the set position, the positioning rod completely disengages from the positioning hole, thereby releasing the limitation on the connecting plate, making it convenient to take the filter plate out from inside the moving frame and replace it with a new filter plate; the moving block compresses the spring, and the compressed spring is conducive to the positioning rod resetting.

[0022] (4) The skid-mounted oily wastewater treatment device provided by the present invention can further improve the speed of filter plate replacement by setting slots on the moving frame and handles on the filter plate. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the skid-mounted oily wastewater treatment device of the present invention from one angle;

[0025] Figure 2This is a schematic diagram from another angle of the skid-mounted oily wastewater treatment device of the present invention;

[0026] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0027] Figure 4 This is a cross-sectional schematic diagram of the skid-mounted oily wastewater treatment device of the present invention;

[0028] Figure 5 yes Figure 4 A magnified view of a portion of the image;

[0029] Figure 6 This is a schematic diagram showing the separation of the filter plate portion of the skid-mounted oily wastewater treatment device of the present invention.

[0030] Figure label:

[0031] 1-Box body; 2-Moving mechanism; 3-Limiting mechanism; 4-Filter plate; 5-Liquid inlet; 6-First discharge pipe; 7-Second discharge pipe; 8-Third discharge pipe; 9-Self-locking caster wheel; 10-Handle; 11-Through hole; 12-First chamber; 13-Second chamber; 14-Third chamber; 15-Water pump; 16-Water inlet pipe; 17-Water outlet pipe; 18-Oil pump; 19-Oil inlet pipe; 20-Outlet pipe Oil pipe; 21-Guide rod; 22-Guide seat; 23-Insertion groove; 24-Baffle; 201-Motor; 202-Lead screw; 203-Moving seat; 204-Moving frame; 301-Fixing plate; 302-Moving rod; 303-Spring; 304-Moving block; 305-Transmission rod; 306-Positioning rod; 307-Limit seat; 308-Connecting plate; 309-Positioning hole; 310-Baffle. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] This invention provides a skid-mounted oily wastewater treatment device.

[0035] Reference Figures 1-6The skid-mounted oily wastewater treatment device provided by the present invention includes a housing 1, an inlet 5 fixedly provided on the upper part of the housing 1, a moving mechanism 2 and a filter plate 4 provided inside the housing 1, the filter plate 4 being disposed on the moving mechanism 2, and a limiting mechanism 3 being provided at the lower end of the moving mechanism 2, the limiting mechanism 3 being used to limit the filter plate 4 from the moving mechanism 2.

[0036] Two partitions 24 are fixedly installed in the lower part of the inner cavity of the box 1. The partitions 24 are symmetrically arranged at the bottom of the box 1, dividing the lower part of the box 1 into a first chamber 12, a second chamber 13 and a third chamber 14. A water pumping component is provided on the left end face of the left partition 24, and an oil pumping component is provided on the right end face of the right partition 24. A first discharge pipe 6 is fixedly installed on the outer wall of the first chamber 12, a second discharge pipe 7 is fixedly installed on the outer wall of the second chamber 13, and a third discharge pipe 8 is fixedly installed on the outer wall of the third chamber 14.

[0037] The working process is as follows: oily wastewater is added into the tank 1 through the inlet 5. The oily wastewater is filtered by the filter plate 4. The filtered oily wastewater enters the second chamber 13. Since oil is lighter than water, it generally floats on the surface of the water. The oil pumping component can pump the oil in the second chamber 13 into the third chamber 14. The water pumping component can pump the water in the second chamber 13 into the first chamber 12. This achieves the purpose of oil-water separation.

[0038] When one side of the filter plate 4 needs to be replaced, the moving mechanism 2 moves the filter plate 4. When the other side of the filter plate 4 is located below the liquid inlet 5, the filter plate 4 on that side extends out of the housing 1, making it convenient for workers to replace, thereby improving the maintenance efficiency of workers. At the same time, since the filter plate 4 on the other side is located below the liquid inlet 5, it can continue to filter oily wastewater, so that the machine does not need to be shut down for a long time when replacing the filter plate 4, thereby improving the filtration efficiency. At the same time, under the action of the limiting mechanism 3, it is convenient to install or remove the filter plate 4 on that side, thereby improving the maintenance efficiency.

[0039] The moving mechanism 2 includes a motor 201, a lead screw 202, a moving seat 203, and a moving frame 204. The thread on the circumferential surface of the lead screw 202 engages with the moving seat 203. The moving frame 204 is fixedly connected to the upper end of the moving seat 203. The moving frame 204 slides in the through hole 11. Insertion slots 23 are provided on both sides of the moving frame 204, and the filter plate 4 is slidably inserted into the insertion slots 23. The motor 201 is fixedly installed on one side of the housing 1. The output end of the motor 201 is fixedly connected to the lead screw 202. When working, the motor 201 works, and the lead screw 202 drives the moving frame 204 to move through the moving seat 203. The filter plate 4 extends out of the housing 1 along with the moving frame 204.

[0040] A guide rod 21 is fixedly connected to the side wall of the housing 1. A guide seat 22 is slidably connected to the circumferential surface of the guide rod 21. The upper end of the guide seat 22 is fixedly connected to the moving frame 204. During operation, by setting the guide rod 21 and the guide seat 22, the movement of the moving frame 204 can be restricted under the action of the guide rod 21 and the guide seat 22, so that the moving frame 204 can only move horizontally left and right.

[0041] The limiting mechanism 3 includes a fixed plate 301, a moving rod 302, a spring 303, a moving block 304, a transmission rod 305, a positioning rod 306, a limiting seat 307, a connecting plate 308, a positioning hole 309, and a baffle 310. The fixed plate 301 and the limiting seat 307 are fixedly connected to the lower end of the moving frame 204. The moving rod 302 is slidably connected inside the fixed plate 301. One end of the moving rod 302 is fixedly connected to the baffle 310, and the other end of the moving rod 302 is fixedly connected to the moving block 304. A spring 303 is fitted around the circumference of a plate 302. One end of the spring 303 is fixedly connected to a fixed plate 301, and the other end of the spring 303 is fixedly connected to a moving block 304. A transmission rod 305 is hinged to both ends of the moving block 304, and a positioning rod 306 is hinged to the other end of the transmission rod 305. The positioning rod 306 is slidably connected to the limiting seat 307. A connecting plate 308 is fixedly connected to both sides of the lower end of the filter plate 4. A positioning hole 309 is opened on the side of the connecting plate 308, and the positioning hole 309 cooperates with the positioning rod 306.

[0042] During operation, as the moving frame 204 moves, it drives the baffle 310 to move as well. When the baffle 310 contacts the inner wall of the housing 1, the moving frame 204 moves, which in turn moves the moving rod 302, thereby moving the moving block 304. Then, with the cooperation of the transmission rod 305, the positioning rod 306 slides inside the limiting seat 307. When the moving frame 204 reaches the limiting position, the positioning rod 306 completely disengages from the positioning hole 309, thereby releasing the limitation on the connecting plate 308. This allows the filter plate 4 to be easily removed from the limiting frame 204 and replaced with a new filter plate 4. At the same time, the movement of the moving block 304 also compresses the spring 303. The compressed spring 303 helps the positioning rod 306 to reset, making it easy for the positioning rod 306 to be reinserted into the positioning hole 309 for repositioning.

[0043] Both sides of the housing 1 are provided with through holes 11. The through holes 11 are T-shaped. The movable frame 204 is located inside the through hole 11 and is slidably connected to the through hole 11. During operation, the movable frame 204 enters and exits the housing through the through hole 11.

[0044] A handle 10 is fixedly connected to the end of the filter plate 4 away from the movable frame 204. During operation, the filter plate 4 can be easily pulled out from inside the movable frame 204 by using the handle 10.

[0045] The water pumping assembly includes a water pump 15, an inlet pipe 16, and an outlet pipe 17. The water pump 15 is fixedly connected to the left side of the partition 24 on the left side. The inlet end of the water pump 15 is fixedly connected to the inlet pipe 16. The end of the inlet pipe 16 away from the water pump 15 passes through the right side of the partition 24 and extends into the second chamber 13. The outlet end of the water pump 15 is fixedly connected to the outlet pipe 17. When working, the water pump 15 works, and under the action of the inlet pipe 16, it can pump the water in the second chamber 13 into the inlet pipe 16, and then enter the water pump 15 along the inlet pipe 16. Finally, it is discharged from the outlet pipe 17 into the first chamber 12.

[0046] The oil extraction assembly includes an oil pump 18, an inlet pipe 19, and an outlet pipe 20. The oil pump 18 is fixedly connected to the right side of the partition 24 on the right side. The inlet end of the oil pump 18 is fixedly connected to the inlet pipe 19. The end of the inlet pipe 19 away from the oil pump 18 is located inside the second chamber 13. The outlet end of the oil pump 18 is fixedly connected to the outlet pipe 20. When working, the oil pump 18 works, and under the action of the inlet pipe 19, the oil in the second chamber 13 can be drawn into the inlet pipe 19, then enter the oil pump 18 along the inlet pipe 19, and finally be discharged from the outlet pipe 20 into the third chamber 14.

[0047] The lower end of the box 1 is fixedly connected with four self-locking casters 9, which are evenly distributed at the four corners of the lower end of the box 1. During operation, the self-locking casters 9 facilitate the movement of the box 1 to the required location.

[0048] In the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0051] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A skid-mounted oily wastewater treatment device, comprising a housing (1), and an inlet (5) disposed in the middle of the upper cover of the housing (1), and further comprising a filter plate (4) disposed inside the housing (1) and located below the inlet (5), characterized in that, It also includes a moving device, on which the filter plate (4) is disposed and moves.

2. The skid-mounted oily wastewater treatment device as described in claim 1, characterized in that: The moving device includes a moving frame (204), which is inserted into and passes through the through holes (11) on both sides of the box body (1). The moving frame (204) is provided with two filter plates (4) on the left and right sides. When one filter plate (4) moves out of the box body (1), the other filter plate (4) is located at the working position below the liquid inlet (5).

3. The skid-mounted oily wastewater treatment device as described in claim 2, characterized in that: The movable frame (204) has a slot on its outer side, and the filter plate (4) is inserted or removed along the slot.

4. The skid-mounted oily wastewater treatment device as described in claim 2, characterized in that: The moving device also includes a reciprocating drive device, which is connected to the moving frame (204) and drives it to reciprocate along the through holes (11) on both sides of the box (1).

5. The skid-mounted oily wastewater treatment device as described in claim 4, characterized in that: The reciprocating drive device includes a lead screw (202) disposed in the housing (1), a motor (201) for driving the lead screw (202) to rotate, and a movable seat (203) fixedly connected to the movable frame (204), the movable seat (203) being engaged and sleeved on the lead screw (202).

6. The skid-mounted oily wastewater treatment device as described in claim 4, characterized in that: The reciprocating drive device is a gear and rack device or a chain and sprocket device.

7. The skid-mounted oily wastewater treatment device as described in claim 1, characterized in that: Each filter plate (4) is provided with a limiting device, which includes a baffle (310), a moving rod (302) is provided on the baffle (310), a spring (303) is sleeved on the moving rod (302), a moving block (304) is provided at the front end of the moving rod (302), a transmission rod (305) is respectively hinged to both ends of the moving block (304), a positioning rod (306) is hinged to the other end of the transmission rod (305), the positioning rod (306) is slidably connected to the limiting seat (307) fixed to the moving frame (204), a connecting plate (308) is fixedly provided on both sides of the filter plate (4), a positioning hole (309) is provided on the connecting plate (308), and the positioning rod (306) is inserted into the positioning hole (309).

8. The skid-mounted oily wastewater treatment device as described in claim 2, characterized in that: The moving device also includes a guiding device, which includes a guide seat (22) and a guide rod (21). The guide seat (22) is fixedly connected to the moving frame (204), and the guide rod (21) is fixedly installed inside the box (1). The guide seat (22) is sleeved on the guide rod (21) and moves along its axial direction.

9. The skid-mounted oily wastewater treatment device as described in claim 1, characterized in that: The lower part of the box (1) is provided with two partitions (24), which divide the lower space of the box (1) into three independent spaces, which are used to store filtered oily wastewater, separated oil and wastewater respectively. The side walls of the box (1) of the three independent spaces are respectively provided with discharge pipes. On the partition of the space used to store oily wastewater, an oil pump is provided at the upper part of the partition and a water pump is provided at the lower part.

10. The skid-mounted oily wastewater treatment device as described in claim 1, characterized in that: The lower part of the box (1) is provided with rollers or casters.

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