Air floatation and filtration combined device for offshore oilfield water treatment

Abstract

The utility model relates to the technical field of air flotation filtration, in particular to an air flotation filtration combined device for offshore oilfield water treatment, which comprises a shell, a partition plate I and a partition plate II are fixedly welded on the left side and the right side of an inner cavity of the shell respectively, and the left side and the right side of the bottom of the shell are communicated with funnels. The bottom of the front surface of the funnel communicates with a sludge discharge pipe, an air inlet assembly is fixedly installed on the left side of the shell, and the bottom of the left side of the shell communicates with a water inlet pipe. According to the utility model, the problems that generated bubbles need to spread into treated water for a long time, cannot be in rapid contact with pollutants and need to be manually replaced or cleaned for a long time are solved, waste residues floating on the water surface can be effectively scraped and discharged, the manual cleaning time is saved, the working efficiency is improved, and the production cost is reduced. Impurities in the sewage are continuously pushed through mesh holes in the surface of the homogenizing mesh plate, so that bubbles are quickly and fully contacted with the sewage, and the sewage treatment speed of the medicament is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of air flotation filtration, in particular to an air flotation filtration combined device for offshore oil field water treatment. Background Art

[0002] Flotation machine is a kind of equipment used for water treatment, mainly used to remove suspended matter, grease and other impurities in water. This equipment produces a large number of tiny bubbles, so that these bubbles combine with suspended particles. Since the density of bubbles is lower than that of water, these combinations will float to the water surface, thereby achieving solid-liquid separation. Flotation filtration devices are required in the process of offshore oilfield water treatment.

[0003] After searching, the patent number is CN220550083U, and the name is a utility model of a flotation filtration combination device for oilfield water treatment, including a filtration channel. Through research and analysis, it is found that although the device can fully flotate the oilfield water, it can play the role of post-flotation filtration by setting up a number of adsorption plates, realizing the flotation filtration treatment of oilfield water in a flowing state, which is beneficial to improve the treatment efficiency. However, there are still the following shortcomings to a certain extent.

[0004] For example, it takes a long time for the generated bubbles to spread into the treated water and cannot quickly come into contact with the pollutants. The operation process is relatively cumbersome and requires long-term manual replacement or cleaning of the filter components, which wastes unnecessary manpower. The treated waste residue is not convenient to be discharged quickly and has general practicality. In order to solve the above technical problems, we have designed a flotation filtration combination device for offshore oilfield water treatment. Utility Model Content

[0005] The utility model aims to provide an air flotation filtration combination device for offshore oilfield water treatment, which has the advantages of rapid treatment and convenient slag removal, and solves the problem that it takes a long time for generated bubbles to spread to the inside of the treated water, cannot quickly contact with pollutants, and requires long-term manual replacement or cleaning of filter components.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flotation filtration combination device for offshore oilfield water treatment, comprising a shell, wherein a partition plate one and a partition plate two are respectively fixedly welded on the left and right sides of the inner cavity of the shell, the left and right sides of the bottom of the shell are connected to funnels, the bottom of the front surface of the funnel is connected to a mud discharge pipe, an air intake assembly is fixedly installed on the left side of the shell, a water inlet pipe is connected to the bottom of the left side of the shell, a slag discharge pipe is connected to the bottom of the right side of the shell, and a drainage pipe is connected to the left and right sides of the bottom of the front surface of the shell, a homogenization assembly is fixedly installed on the top of the shell and on the right side of the air intake assembly, and a slag discharge assembly is fixedly installed at the center of the top of the shell.

[0007] Preferably, the air intake assembly includes an air compressor, which is fixedly mounted on the left side of the shell, the output end of the air compressor is connected to a connecting pipe, and the end of the connecting pipe away from the air compressor is connected to an air dissolving tank.

[0008] Preferably, a mounting frame is fixedly welded to the bottom of the gas dissolving tank, the mounting frame is welded to the left side of the top of the shell, the bottom of the gas dissolving tank is connected to a collecting pipe, and the bottom of the collecting pipe is connected to an exhaust pipe.

[0009] Preferably, the homogenization assembly includes vertical plates, which are respectively fixedly mounted on the front and rear sides of the top of the shell, and a motor 1 is fixedly mounted on the top of the rear side of the rear vertical plate, and the output shaft of the motor 1 passes through between the two vertical plates and is fixedly connected with a threaded rod.

[0010] Preferably, a threaded block is provided on the threaded sleeve on the surface of the threaded rod, a homogenizing mesh plate is fixedly connected to the bottom of the threaded block, a limit rod is slidably penetrated through the top of the surface of the homogenizing mesh plate, and the front and rear sides of the limit rod are respectively fixedly connected to the surfaces of the two vertical plates.

[0011] Preferably, the slag discharge assembly includes two motors and a rotating rod. There are two rotating rods, which are movably installed at the center and right side of the top of the shell through bearing seats respectively. Sprockets are fixedly sleeved on the front and rear sides of the surface of the rotating rod, and a chain is provided on the surface transmission sleeve of the sprocket.

[0012] Preferably, a scraper is fixedly mounted on the surface of the chain, the second motor is fixedly mounted on the back surface of the shell, and the output shaft of the second motor is fixedly connected to the rear side of the left rotating rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model drives the rotating rod to rotate through the second output shaft of the motor, so that the sprocket drives the chain to rotate, and then drives the scraper to move back and forth, which can effectively scrape and discharge the waste residue floating on the water surface, saving the time of manual cleaning and improving work efficiency.

[0015] 2. The utility model drives the threaded rod to rotate through the output shaft of the motor, and drives the threaded block to move under the action of the thread, so that the equalizing screen plate is driven to move back and forth continuously, and the impurities in the sewage are continuously pushed through the mesh holes on the surface of the equalizing screen plate, so that the bubbles are quickly in full contact with the sewage, thereby accelerating the treatment speed of the sewage by the agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0019] Figure 4 It is a schematic diagram of a partially cutaway three-dimensional structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the homogenizing component of the utility model.

[0021] In the figure: 1. Shell; 2. Drain pipe; 3. Homogenizing assembly; 31. Vertical plate; 32. Motor 1; 33. Limit rod; 34. Threaded block; 35. Threaded rod; 36. Homogenizing mesh plate; 4. Mud discharge pipe; 5. Water inlet pipe; 6. Air intake assembly; 61. Air compressor; 62. Connecting pipe; 63. Dissolved gas tank; 64. Collecting pipe; 65. Exhaust pipe; 7. Slag discharge assembly; 71. Motor 2; 72. Chain; 73. Scraper; 74. Sprocket; 75. Rotating rod; 8. Slag discharge pipe; 9. Partition 2; 10. Funnel; 11. Partition 1. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 5 , an air flotation filtration combination device for offshore oilfield water treatment, an air flotation filtration combination device for offshore oilfield water treatment, comprising a shell 1, a baffle 11 and a baffle 2 9 are respectively fixedly welded on the left and right sides of the inner cavity of the shell 1, a funnel 10 is connected to the left and right sides of the bottom of the shell 1, a mud discharge pipe 4 is connected to the bottom of the front surface of the funnel 10, an air intake component 6 is fixedly installed on the left side of the shell 1, a water inlet pipe 5 is connected to the bottom of the left side of the shell 1, a slag discharge pipe 8 is connected to the bottom of the right side of the shell 1, a drainage pipe 2 is connected to the left and right sides of the bottom of the front surface of the shell 1, a homogenizing component 3 is fixedly installed on the top of the shell 1 and on the right side of the air intake component 6, and a slag discharge component 7 is fixedly installed at the center of the top of the shell 1;

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The air intake assembly 6 includes an air compressor 61, which is fixedly mounted on the left side of the housing 1. The output end of the air compressor 61 is connected to a connecting pipe 62, and a valve is fixedly mounted on the surface of the connecting pipe 62. By setting the valve, the air intake speed of the air compressor 61 can be adjusted. One end of the connecting pipe 62 away from the air compressor 61 is connected to a dissolved gas tank 63;

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The bottom of the gas dissolving tank 63 is fixedly welded with a mounting frame, which is welded to the left side of the top of the shell 1. The bottom of the gas dissolving tank 63 is connected to a collecting pipe 64, and the bottom of the collecting pipe 64 is connected to an exhaust pipe 65. The exhaust pipes 65 are arranged and distributed, which can evenly discharge gas and make the bubbles more uniform.

[0025] See also Figure 5 The homogenizing assembly 3 includes a vertical plate 31, which is fixedly mounted on the front and rear sides of the top of the housing 1, and a motor 32 is fixedly mounted on the top of the rear vertical plate 31. The output shaft of the motor 32 passes through between the two vertical plates 31 and is fixedly connected with a threaded rod 35.

[0026] See also Figure 5 The surface of the threaded rod 35 is threadedly sleeved with a threaded block 34, and the bottom of the threaded block 34 is fixedly connected to a homogenizing mesh plate 36. A limit rod 33 is slidably penetrated through the top of the surface of the homogenizing mesh plate 36. The front and rear sides of the limit rod 33 are respectively fixedly connected to the surfaces of the two vertical plates 31. By using the limit rod 33, the movement of the threaded block 34 can be conveniently limited to avoid rotation during the movement, so that the homogenizing mesh plate 36 can move stably.

[0027] See also Figure 1 , Figure 2 and Figure 4 The slag discharge assembly 7 includes a motor 71 and a rotating rod 75. There are two rotating rods 75, which are movably mounted at the center and right side of the top of the housing 1 through bearing seats. The rotating rod 75 can be stably mounted through the use of the bearing seats so that it will not shake during the rotation process. The front and rear sides of the surface of the rotating rod 75 are fixedly sleeved with sprockets 74, and the surface transmission sleeve of the sprocket 74 is provided with a chain 72;

[0028] See also Figure 1 , Figure 2 and Figure 4 A scraper 73 is fixedly installed on the surface of the chain 72, the motor 2 71 is fixedly installed on the back surface of the housing 1, and the output shaft of the motor 2 71 is fixedly connected to the rear side of the rotating rod 75 on the left side.

[0029] When in use, sewage is introduced from the water inlet pipe 5, and then the air compressor 61 is started. The air compressor 61 draws external air and compresses it to enter the dissolving tank 63 through the connecting pipe 62 for dissolution, and then it is discharged to the bottom of the sewage from the exhaust pipe 65 in the form of bubbles. At this time, the treatment agent is added to the inside of the shell 1, and then the motor 1 32 is started. The threaded rod 35 is driven to rotate through its output shaft, and the homogenizing mesh plate 36 is driven to move back and forth under the action of the thread, so that the sewage can be pushed, so that the impurities in the sewage can quickly contact with the bubbles, and the impurities are adsorbed by the bubbles and float on the water surface. At this time, the motor 2 71 is started, and the rotating rod 75 is driven to rotate through its output shaft. The transmission is carried out through the sprocket 74 and the chain 72, so that it drives the scraper 73 to rotate counterclockwise, scrapes the floating impurities to the right, and enters the right side of the partition 2 9 on the right side of the inner cavity of the shell 1 for collection. The large impurities enter the funnel 10 and are discharged from the mud discharge pipe 4, the clean water is discharged from the drain pipe 2, and the oil residue is discharged through the slag discharge pipe 8.

[0030] In summary: the flotation filtration combination device for offshore oilfield water treatment, through the coordination of the shell 1, the drain pipe 2, the homogenization component 3, the mud discharge pipe 4, the water inlet pipe 5, the air intake component 6 and the slag discharge component 7, solves the problem that it takes a long time for the generated bubbles to spread to the inside of the treated water, and they cannot quickly come into contact with the pollutants, and the filter components need to be replaced or cleaned manually for a long time.

Claims

1. An air flotation filtration combined device for offshore oilfield water treatment, comprising a housing (1), characterized in that: Partition 1 (11) and partition 2 (9) are respectively fixedly welded to the left and right sides of the inner cavity of the shell (1); the left and right sides of the bottom of the shell (1) are connected to a funnel (10); the bottom of the front surface of the funnel (10) is connected to a mud discharge pipe (4); the left side of the shell (1) is fixedly installed with an air intake assembly (6); the left side of the bottom of the shell (1) is connected to a water intake pipe (5); the right side of the bottom of the shell (1) is connected to a slag discharge pipe (8); the left and right sides of the bottom of the front surface of the shell (1) are connected to a drainage pipe (2); the top of the shell (1) and located on the right side of the air intake assembly (6) is fixedly installed with a homogenizing assembly (3); and the center of the top of the shell (1) is fixedly installed with a slag discharge assembly (7).

2. The air flotation filtration combined device for offshore oilfield water treatment according to claim 1, characterized in that: The air intake assembly (6) comprises an air compressor (61), the air compressor (61) is fixedly mounted on the left side of the housing (1), the output end of the air compressor (61) is connected to a connecting pipe (62), and the end of the connecting pipe (62) away from the air compressor (61) is connected to an air dissolving tank (63).

3. The air flotation filtration combined device for offshore oilfield water treatment according to claim 2, characterized in that: A mounting frame is fixedly welded to the bottom of the gas dissolving tank (63), and the mounting frame is welded to the left side of the top of the shell (1). The bottom of the gas dissolving tank (63) is connected to a collecting pipe (64), and the bottom of the collecting pipe (64) is connected to an exhaust pipe (65).

4. The air flotation filtration combined device for offshore oilfield water treatment according to claim 1, characterized in that: The homogenizing assembly (3) comprises a vertical plate (31), wherein the vertical plates (31) are fixedly mounted on the front and rear sides of the top of the housing (1), respectively; a motor 1 (32) is fixedly mounted on the top of the rear side of the vertical plate (31); an output shaft of the motor 1 (32) passes through between the two vertical plates (31) and is fixedly connected to a threaded rod (35).

5. The air flotation filtration combined device for offshore oilfield water treatment according to claim 4, characterized in that: The surface of the threaded rod (35) is threadedly sleeved with a threaded block (34), the bottom of the threaded block (34) is fixedly connected to a homogenizing mesh plate (36), the top of the surface of the homogenizing mesh plate (36) is slidably penetrated by a limit rod (33), and the front and rear sides of the limit rod (33) are respectively fixedly connected to the surfaces of the two vertical plates (31).

6. The air flotation filtration combined device for offshore oilfield water treatment according to claim 1, characterized in that: The slag discharge assembly (7) comprises a second motor (71) and a rotating rod (75). There are two rotating rods (75) and they are movably mounted at the center and right side of the top of the housing (1) through bearing seats respectively. Sprockets (74) are fixedly sleeved on both the front and rear sides of the surface of the rotating rod (75), and a chain (72) is provided on the surface transmission sleeve of the sprocket (74).

7. The air flotation filtration combined device for offshore oilfield water treatment according to claim 6, characterized in that: A scraper (73) is fixedly mounted on the surface of the chain (72), the second motor (71) is fixedly mounted on the back surface of the housing (1), and the output shaft of the second motor (71) is fixedly connected to the rear side of the left rotating rod (75).

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