CN215947030U - A sewage purification device for oil gas field engineering environmental protection - Google Patents

Abstract

The utility model discloses a sewage purification device for oil and gas field engineering environmental protection, which relates to the technical field of oil field sewage treatment and comprises the following components: the sterilization box comprises a filter box, a connecting pipe and a sterilization box, wherein two ends of the connecting pipe are fixedly connected with the bottom of one side of the filter box and the top of one side of the sterilization box respectively, and the bottom of the filter box and the bottom of the sterilization box are fixedly connected with a bottom plate. According to the utility model, through the matching of the filtering mechanism, the disinfecting mechanism and the disinfecting mechanism, the problem that most sundries in sewage are not broken in time and flow away along with the sewage because most sundries in the sewage are broken by using the reciprocating motion of the impact block in the conventional oil field sewage treatment device is solved, the effect of quickly and continuously breaking the sundries in the sewage is realized, the problem that the sewage treatment effect is not ideal because most of the conventional oil field sewage treatment devices only filter and purify the sewage is solved, and the effects of heating, disinfecting and disinfecting the sewage are realized simultaneously.

Description

A sewage purification device for oil gas field engineering environmental protection

Technical Field

The utility model relates to the technical field of oil field sewage treatment, in particular to a sewage purification device for oil and gas field engineering environmental protection.

Background

In the process of oil field exploitation, for a sandstone reservoir with high permeability and loose cementation, because the burial is shallow, sand is easy to generate in the stratum. On one hand, under the scouring action of the sandstone reservoir stratum, sand grains in the stratum drop and are aggravated, so that the sand carrying capacity in the produced liquid is continuously improved. On the other hand, after the produced liquid treated sewage is operated for a long time in a reinjection system, impurities such as calcium and magnesium ions in the water are easy to scale, and the scales are easy to degrade and fall off under the action of scouring force, so that large granular mechanical impurities are formed in the sewage. These impurities often cause damage to the injection pump, plugging of pipelines, water meter blockage, plugging of the formation, and the like.

In the prior art, a natural sedimentation method is adopted to remove the mechanical impurities and sand grains, and sewage is naturally precipitated in a container with enough size, but the investment cost of the natural sedimentation method is high; and since the above-mentioned mechanical impurities and sand grains are naturally settled in the container, it takes a sufficient time to be completed, and thus the working efficiency is low.

The prior patent (publication number: CN208829391U) discloses an oilfield sewage treatment device, which can be provided with a first treatment system, a second treatment system, a third treatment system and a liquid storage tank, wherein oilfield sewage firstly enters the first treatment system to crush impurities in the oilfield sewage, then is stirred and ground by the second treatment system, then is introduced into the third treatment system to be filtered, and is stored in the liquid storage tank after being filtered by the filter system after being filtered, so that the treatment time of the oilfield sewage is saved, and the working efficiency of oilfield sewage treatment is improved.

However, the oil field sewage treatment device designed above has some disadvantages in practical application: the oil field sewage treatment device designed as above achieves the purpose of crushing the sundries in the oil field sewage by arranging the impact block in the liquid guide pipe when the oil field sewage treatment device treats the sewage, but in practice, because the flow velocity of the oil field sewage in the liquid guide pipe is very fast, the sundries cannot be effectively and fully crushed by adopting the impact block, only a small amount of sundries can be impacted, other sundries can flow away along with the sewage, the treatment effect is not ideal, in addition, the oil stain ignition operation can be achieved by arranging the igniter in the filter box, but because the gas discharged after ignition contains high heat, the gas is directly discharged to the outside, the temperature of the surrounding environment is easily increased, and further the discomfort of workers is caused, and the sewage treatment device also is not provided with a high-temperature and ultraviolet sterilization mechanism, because the sewage contains a large amount of bacteria, these bacteria cannot be filtered only by the filtering structure, thus reducing the treatment effect of the sewage treatment apparatus, and for this reason, we have designed a sewage purification apparatus for oil and gas field engineering environmental protection to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an environment-friendly sewage purification device for oil and gas field engineering, which solves the problem that most sundries in sewage cannot be broken in time and flow away along with the sewage because most of the conventional oil field sewage treatment devices use a collision block to break the sundries in the sewage in a reciprocating manner, realizes the effect of quickly and continuously breaking the sundries in the sewage, simultaneously solves the problem that the conventional oil field sewage treatment devices only filter and purify the sewage mostly, so that the sewage treatment effect is not ideal, and realizes the effects of heating, disinfecting and sterilizing the sewage simultaneously.

In order to solve the technical problems, the utility model provides an environment-friendly sewage purification device for oil and gas field engineering, which comprises: the filter box comprises a filter box body, a connecting pipe and a sterilization box body, wherein the two ends of the connecting pipe are respectively fixedly connected with the bottom of one side of the filter box body and the top of one side of the sterilization box body, the bottom of the filter box body and the bottom of one side of the sterilization box body are fixedly connected with a bottom plate, two water inlet pipes are symmetrically arranged at the top of the connecting pipe body, an installation cavity is arranged in the filter box body, a filtering mechanism and a disinfecting mechanism are arranged in the installation cavity, the disinfecting mechanism is located below the filtering mechanism, a cavity is formed in the sterilization box body, the disinfecting mechanism is arranged in the cavity, a drain pipe is arranged at the bottom, far away from one side of the connecting pipe, of the sterilization box body, and a manual valve is arranged on the drain pipe.

Preferably, the filtering mechanism comprises an installation box, a servo motor, a filtering plate, filter cotton, two rotating rollers and two gears, wherein the two rotating rollers are symmetrically and rotatably connected in the installation cavity, the two rotating rollers are fixedly connected with a plurality of crushing blades which are staggered, the installation box is fixedly connected to the top of one side of the filtering box, a sliding cavity is arranged in the installation box, one ends of the two rotating rollers penetrate through the filtering box and extend into the sliding cavity, the two gears are respectively and fixedly sleeved on the two rotating rollers, the servo motor is fixedly connected in the sliding cavity, a driving shaft of the servo motor is in transmission connection with one end of one of the rotating rollers, the filtering plate is movably arranged in the installation cavity, the filter cotton is fixedly connected to the bottom of the filtering plate, and the filtering plate and the filter cotton are both positioned below the rotating rollers, through opening servo motor, make one of them live-rollers drive and smash blade and one of them gear revolve, make another gear drive another live-rollers and smash the blade and rotate afterwards, can carry out debris to the sewage that the source of water inlet pipe constantly fell and smash, then disintegrating slag and sewage flow down simultaneously, sewage sees through the filter and filters the cotton and fall afterwards, debris are kept off by filter and filtration cotton and can accomplish the debris and filter, current oil field sewage treatment plant has been solved, smash debris in the sewage because of mostly using striking piece reciprocating motion, lead to most debris to fail in time to be smashed and along with the problem that sewage flows away, the effect of smashing debris in the sewage has been realized fast and continuously.

Preferably, the disinfection mechanism comprises a water suction pump, two rotating shafts, two rotating discs, two stirring rods and three heating resistors, wherein the two rotating shafts are symmetrically and rotatably connected in the installation cavity, the two rotating discs are respectively and fixedly sleeved on the two rotating shafts, the rear side of the filter box is fixedly connected with a synchronous motor, a driving shaft of the synchronous motor is in transmission connection with one end of one rotating shaft, the stirring rods are fixedly connected to the tops of the two rotating discs, the three heating resistors are sequentially arranged on the bottom wall of the installation cavity, the water suction pump is fixedly connected to one side of the bottom wall of the installation cavity, the water outlet end of the water suction pump is positioned in the connecting pipe, the sewage can be heated and disinfected by opening the heating resistors, the synchronous motor is opened in the process, the rotating shafts drive the rotating discs and the stirring rods to rotate, and the heated sewage can be uniformly stirred, make its thermally equivalent, then open the suction pump, make the waste water of disinfection completion pass through the connecting pipe and get into the sterilization incasement, can disinfect work sewage to improve the quality of purifying sewage.

Preferably, the sterilization mechanism comprises a threaded lead screw, a nut, a driving motor and an ultraviolet sterilization lamp, the screw lead screw is rotationally connected in the cavity, the nut is in threaded connection with the screw lead screw, the driving motor is fixedly connected with the top of one side of the sterilization box, and a driving shaft of the driving motor is in transmission connection with one end of the threaded screw rod, the ultraviolet sterilizing lamp is fixedly connected to the bottom of the nut, a limiting groove is formed in the sterilization box, a roller is connected in the limiting groove in a rolling manner, a mounting frame on the outer side of the roller is fixedly connected with the top of the nut, a driving motor is started to rotate the threaded screw rod, the nut drives the ultraviolet sterilization lamp to horizontally move along the direction of the limiting groove, can carry out final sterilization work to sewage, can carry out the ultraviolet ray to the bacterium that is not killed by the disinfection and kill to improve water purification effect.

Preferably, the two rotating shafts are fixedly sleeved with chain wheels, the chain wheels are connected with transmission chains in a meshed mode, and meanwhile the two stirring rods can rotate simultaneously due to the matching of the chain wheels and the transmission chains, so that the stirring area is increased.

Preferably, two drainage plates of roof symmetry fixedly connected with of installation cavity, the drainage plate sets up for the slope, just the drainage plate is located the top of live-rollers, helps the direct dropping on the blade of smashing of debris in the sewage to help improving and smash the effect.

Preferably, two installation pieces of installation intracavity symmetry fixedly connected with, the installing port has been seted up at the top of installation piece, sliding connection has the slider in the installing port, the top of slider and the bottom fixed connection of filter, the both sides of crossing the filter pulp respectively with two installation piece relative one side sliding connection, can conveniently dismantle the filter to conveniently clear up the debris that the filter top blockked.

Preferably, two drainage frames are fixedly connected in the cavity, the two drainage frames are obliquely arranged, and the drainage frames are in a half-pipe shape, so that sewage can be uniformly sterilized by the ultraviolet sterilizing lamp.

Preferably, the front side of rose box and sterilization case all is provided with perspective glass, the front side of rose box is provided with the control panel, the equal electric connection of control panel and servo motor, synchronous machine, suction pump and driving motor makes things convenient for personnel to control servo motor, synchronous machine, suction pump and driving motor.

Compared with the related art, the environment-friendly sewage purification device for oil-gas field engineering provided by the utility model has the following beneficial effects:

1. according to the utility model, one of the rotating rollers drives the crushing blade and one of the gears to rotate by starting the servo motor, and then the other gear drives the other rotating roller and the crushing blade to rotate, so that the sewage which is continuously dropped from a source in the water inlet pipe can be crushed, then the crushed slag and the sewage flow down simultaneously, then the sewage flows down through the filter plate and the filter cotton, and the impurities are blocked by the filter plate and the filter cotton to filter the impurities, so that the problem that most of the impurities cannot be crushed in time and flow away along with the sewage due to the fact that most of the impurities in the sewage are crushed by using the reciprocating motion of the impact block in the conventional oilfield sewage treatment device is solved, and the effect of quickly and continuously crushing the impurities in the sewage is realized.

2. According to the utility model, the heating resistor is turned on to heat and sterilize the sewage, the synchronous motor is turned on in the process, the rotating shaft drives the rotating disc and the stirring rod to rotate, the heated sewage can be uniformly stirred and heated, then the water pump is turned on, the sterilized wastewater enters the sterilization box through the connecting pipe, then the driving motor is turned on, the threaded screw rod rotates, and the nut drives the ultraviolet sterilization lamp to horizontally move along the direction of the limiting groove, so that the final sterilization work can be carried out on the sewage.

Drawings

FIG. 1 is a schematic perspective view of the exterior of a sewage purification apparatus for environmental protection in oil and gas field engineering;

FIG. 2 is a schematic diagram of the internal structure of a filter box of the sewage purification device for environmental protection in oil and gas field engineering;

FIG. 3 is a schematic view of the internal structure of the top of the filtering box of the sewage purifying device for environmental protection in oil and gas field engineering;

fig. 4 is a schematic diagram of the internal structure of a sterilization box of a sewage purification device for environmental protection in oil and gas field engineering.

Reference numbers in the figures: 1. a filter box; 2. a rotating roller; 3. installing a box; 4. a gear; 5. a servo motor; 6. a water inlet pipe; 7. a drainage plate; 8. a filter plate; 9. filtering cotton; 10. a rotating shaft; 11. a turntable; 12. a stirring rod; 13. a heating resistor; 14. a water pump; 15. a connecting pipe; 16. a sterilization box; 17. a threaded lead screw; 18. a nut; 19. a drive motor; 20. an ultraviolet sterilizing lamp; 21. a drainage frame; 22. and a water discharge pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First embodiment, given by fig. 1 to 4, a sewage purification apparatus for oil and gas field engineering environmental protection, comprising: the sterilization box comprises a filter box 1, a connecting pipe 15 and a sterilization box 16, wherein two ends of the connecting pipe 15 are respectively fixedly connected with the bottom of one side of the filter box 1 and the top of one side of the sterilization box 16, the bottoms of the filter box 1 and the sterilization box 16 are fixedly connected with a bottom plate, two water inlet pipes 6 are symmetrically arranged at the top of the connecting pipe 15, an installation cavity is arranged in the filter box 1, a filter mechanism and a sterilization mechanism are arranged in the installation cavity, the sterilization mechanism is positioned below the filter mechanism, a cavity is arranged in the sterilization box 16, the sterilization mechanism is arranged in the cavity, a drain pipe 22 is arranged at the bottom of one side of the sterilization box 16, which is far away from the connecting pipe 15, and a manual valve is arranged on the drain pipe 22;

the filtering mechanism comprises a mounting box 3, a servo motor 5, a filtering plate 8, filter cotton 9, two rotating rollers 2 and two gears 4, wherein the two rotating rollers 2 are symmetrically and rotatably connected in the mounting cavity, a plurality of crushing blades are fixedly connected to the two rotating rollers 2 and are staggered, the mounting box 3 is fixedly connected to the top of one side of the filtering box 1, a sliding cavity is arranged in the mounting box 3, one ends of the two rotating rollers 2 penetrate through the filtering box 1 and extend into the sliding cavity, the two gears 4 are respectively and fixedly sleeved on the two rotating rollers 2, the servo motor 5 is fixedly connected in the sliding cavity, a driving shaft of the servo motor 5 is in transmission connection with one end of one of the rotating rollers 2, the filtering plate 8 is movably arranged in the mounting cavity, the filter cotton 9 is fixedly connected to the bottom of the filtering plate 8, and the filtering plate 8 and the filter cotton 9 are both positioned below the rotating rollers 2, through opening servo motor 5, make one of them live-rollers 2 drive and smash blade and one of them gear 4 rotation, make another gear 4 drive another live-rollers 2 and smash the blade rotation afterwards, can carry out debris to the sewage that the source constantly fell in inlet tube 6 and smash, then disintegrating slag and sewage flow down simultaneously, sewage sees through filter 8 and filter pulp 9 and falls afterwards, debris are kept off by filter 8 and filter pulp 9 and can be accomplished the debris and filter, current oil field sewage treatment plant has been solved, smash debris in the sewage because of mostly using striking piece reciprocating motion, lead to most debris to fail in time to be smashed and along with the problem that sewage flows away, the effect of smashing debris in the sewage fast and in succession has been realized.

Embodiment two, on the basis of embodiment one, the disinfection mechanism includes a water suction pump 14, two rotation shafts 10, two rotary tables 11, two stirring rods 12 and three heating resistors 13, the two rotation shafts 10 are symmetrically and rotatably connected in the installation cavity, the two rotary tables 11 are fixedly sleeved on the two rotation shafts 10 respectively, the rear side of the filter box 1 is fixedly connected with a synchronous motor, a driving shaft of the synchronous motor is in transmission connection with one end of one rotation shaft 10, the top parts of the two rotary tables 11 are fixedly connected with the stirring rods 12, the three heating resistors 13 are sequentially arranged on the bottom wall of the installation cavity, the water suction pump 14 is fixedly connected on one side of the bottom wall of the installation cavity, a water outlet end of the water suction pump 14 is located in a connecting pipe 15, the sewage can be heated and disinfected by turning on the heating resistors 13, the synchronous motor is turned on in the process, so that the rotation shafts 10 drive the rotary tables 11 and the stirring rods 12 to rotate, the heated sewage can be uniformly stirred to be uniformly heated, then the water suction pump 14 is started, the sterilized wastewater enters the sterilization box 16 through the connecting pipe 15, and the sewage can be sterilized, so that the quality of purified sewage is improved.

Third embodiment, on the basis of the first embodiment, the sterilization mechanism includes a threaded screw 17, a nut 18, a driving motor 19 and an ultraviolet sterilization lamp 20, the threaded screw 17 is rotatably connected in the cavity, the nut 18 is threadedly connected on the threaded screw 17, the driving motor 19 is fixedly connected to the top of one side of the sterilization box 16, a driving shaft of the driving motor 19 is in transmission connection with one end of the threaded screw 17, the ultraviolet sterilization lamp 20 is fixedly connected to the bottom of the nut 18, a limit groove is formed in the sterilization box 16, a roller is rotatably connected in the limit groove, a mounting rack outside the roller is fixedly connected to the top of the nut 18, the driving motor 19 is started to rotate the threaded screw 17, so that the nut 18 drives the ultraviolet sterilization lamp 20 to horizontally move along the direction of the limit groove, the final sterilization work can be performed on the sewage, the ultraviolet sterilization can be performed on bacteria which are not sterilized, thereby improving the water purification effect.

In the fourth embodiment, on the basis of the second embodiment, the two rotating shafts 10 are fixedly sleeved with chain wheels, the chain wheels are engaged and connected with a transmission chain, and the two stirring rods 12 can rotate simultaneously due to the cooperation of the chain wheels and the transmission chain, so that the stirring area is increased.

Fifth, on the basis of first embodiment, two drainage plates 7 of roof symmetry fixedly connected with of installation cavity, drainage plate 7 set up for the slope, and drainage plate 7 is located the top of live-rollers 2, helps the direct on the blade of smashing of debris in the sewage to help improving and smash the effect.

Sixth embodiment, on the basis of first embodiment, two installation pieces of installation intracavity symmetry fixedly connected with, the installing port has been seted up at the top of installation piece, and sliding connection has the slider in the installing port, the top of slider and the bottom fixed connection of filter 8, the both sides of crossing filter pulp 9 respectively with two installation piece relative one side sliding connection, can conveniently dismantle filter 8 to conveniently clear up debris that the filter 8 top blockked down.

Seventh embodiment, on the basis of the first embodiment, two drainage frames 21 are fixedly connected in the cavity, the two drainage frames 21 are both arranged obliquely, and the drainage frames 21 are in a half-pipe shape, so that the sewage can be uniformly sterilized by the ultraviolet sterilizing lamp 20.

Eighth, on the basis of the third embodiment, the front sides of the filter box 1 and the sterilization box 16 are respectively provided with a see-through glass, the front side of the filter box 1 is provided with a control panel, and the control panel is electrically connected with the servo motor 5, the synchronous motor, the water pump 14 and the driving motor 19, so that a person can conveniently control the servo motor 5, the synchronous motor, the water pump 14 and the driving motor 19.

The working principle is as follows:

when impurities in the sewage need to be removed:

the first step is as follows: firstly, introducing sewage into two water inlet pipes 6, so that the sewage falls into the filter box 1 through the water inlet pipes 6;

the second step is that: then, a servo motor 5 is started, one of the rotating rollers 2 drives the crushing blades and one of the gears 4 to rotate, and then the other gear 4 drives the other rotating roller 2 to rotate with the crushing blades, so that sundries in the sewage which is continuously dropped from the source in the water inlet pipe 6 can be crushed;

the third step: and finally, the crushed slag and the sewage flow down simultaneously, then the sewage passes through the filter plate 8 and the filter cotton 9 and falls down, and impurities are blocked by the filter plate 8 and the filter cotton 9, so that the impurity filtering is completed.

When sewage needs to be disinfected and sterilized:

the first step is as follows: firstly, the heating resistor 13 is turned on to heat and disinfect the sewage;

the second step is that: in the process of heating sewage, a synchronous motor is started, so that the rotating shaft 10 drives the rotating disc 11 and the stirring rods 12 to rotate, the two stirring rods 12 rotate simultaneously through the matching of the chain wheel and the transmission chain, and heated sewage can be uniformly stirred and uniformly heated;

the third step: then the water pump 14 is started to enable the disinfected wastewater to enter the sterilization box 16 through the connecting pipe 15, the sewage flows on the drainage frame 21, then the driving motor 19 is started to enable the threaded screw rod 17 to rotate, the nut 18 drives the ultraviolet sterilization lamp 20 to horizontally move along the direction of the limiting groove, the final sterilization work can be carried out on the sewage, and finally the manual valve is started to enable the purified water to be discharged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A sewage purification device for oil and gas field engineering environmental protection comprises: the automatic sterilization device comprises a filter box (1), a connecting pipe (15) and a sterilization box (16), and is characterized in that two ends of the connecting pipe (15) are respectively fixedly connected with the bottom of one side of the filter box (1) and the top of one side of the sterilization box (16), the bottom of the filter box (1) and the bottom of the sterilization box (16) are fixedly connected with a bottom plate, the top of the connecting pipe (15) is symmetrically provided with two water inlet pipes (6), an installation cavity is arranged inside the filter box (1), a filtering mechanism and a sterilizing mechanism are arranged in the installation cavity, the sterilizing mechanism is located below the filtering mechanism, a cavity is arranged inside the sterilization box (16), the sterilizing mechanism is arranged in the cavity, a drain pipe (22) is arranged at the bottom of one side, far away from the connecting pipe (15), of the sterilization box (16), and a manual valve is arranged on the drain pipe (22).

2. The sewage purification device for oil and gas field engineering environmental protection according to claim 1, wherein the filtering mechanism comprises a mounting box (3), a servo motor (5), a filter plate (8), filter cotton (9), two rotating rollers (2) and two gears (4), the two rotating rollers (2) are symmetrically and rotatably connected in the mounting cavity, the two rotating rollers (2) are fixedly connected with a plurality of crushing blades which are staggered, the mounting box (3) is fixedly connected with the top of one side of the filtering box (1), a sliding cavity is arranged in the mounting box (3), one end of each of the two rotating rollers (2) penetrates through the filtering box (1) and extends into the sliding cavity, the two gears (4) are respectively and fixedly sleeved on the two rotating rollers (2), the servo motor (5) is fixedly connected in the sliding cavity, and the driving shaft of the servo motor (5) is in transmission connection with one end of one of the rotating rollers (2), the filter plate (8) is movably arranged in the mounting cavity, the filter cotton (9) is fixedly connected to the bottom of the filter plate (8), and the filter plate (8) and the filter cotton (9) are both positioned below the rotating rollers (2).

3. The sewage purification device for oil and gas field engineering environmental protection according to claim 1, wherein the disinfection mechanism comprises a water suction pump (14), two rotating shafts (10), two rotating discs (11), two stirring rods (12) and three heating resistors (13), the two rotating shafts (10) are symmetrically and rotatably connected in the installation cavity, the two rotating discs (11) are respectively and fixedly sleeved on the two rotating shafts (10), the rear side of the filter box (1) is fixedly connected with a synchronous motor, the driving shaft of the synchronous motor is in transmission connection with one end of one rotating shaft (10), the tops of the two rotating discs (11) are both fixedly connected with the stirring rods (12), the three heating resistors (13) are sequentially arranged on the bottom wall of the installation cavity, the water suction pump (14) is fixedly connected on one side of the bottom wall of the installation cavity, and the water outlet end of the water suction pump (14) is positioned in the connecting pipe (15).

4. The sewage purification device for oil and gas field engineering environmental protection according to claim 1, characterized in that, the sterilization mechanism includes threaded screw rod (17), nut (18), driving motor (19) and ultraviolet sterilamp (20), threaded screw rod (17) rotates to be connected in the cavity, nut (18) threaded connection is on threaded screw rod (17), driving motor (19) fixed connection is at the top of sterilization case (16) one side, just the drive shaft of driving motor (19) is connected with the one end transmission of threaded screw rod (17), ultraviolet sterilamp (20) fixed connection is in the bottom of nut (18), spacing groove has been seted up in sterilization case (16), the rolling connection in the spacing groove has the gyro wheel, the mounting bracket in the gyro wheel outside and the top fixed connection of nut (18).

5. The sewage purification device for oil and gas field engineering environmental protection according to claim 3, characterized in that two of the rotating shafts (10) are fixedly sleeved with chain wheels, and the chain wheels are engaged with driving chains.

6. The sewage purification device for oil and gas field engineering environmental protection according to claim 1, characterized in that the top wall of the installation cavity is symmetrically and fixedly connected with two flow guide plates (7), the flow guide plates (7) are obliquely arranged, and the flow guide plates (7) are positioned above the rotating roller (2).

7. The sewage purification device for oil and gas field engineering environmental protection according to claim 2, wherein two installation blocks are symmetrically and fixedly connected in the installation cavity, an installation opening is formed in the top of each installation block, a slider is slidably connected in the installation opening, the top of the slider is fixedly connected with the bottom of the filter plate (8), and two sides of the filter cotton (9) are respectively slidably connected with one side of the two installation blocks, which is opposite to the two installation blocks.

8. The sewage purification device for oil and gas field engineering environmental protection according to claim 1, wherein two drainage frames (21) are fixedly connected in the cavity, two drainage frames (21) are both obliquely arranged, and the drainage frames (21) are in a semi-tubular shape.

9. The sewage purification device for oil and gas field engineering environmental protection according to claim 4, wherein the front sides of the filter tank (1) and the sterilization tank (16) are both provided with perspective glass, the front side of the filter tank (1) is provided with a control board, and the control board is electrically connected with the servo motor (5), the synchronous motor, the water pump (14) and the driving motor (19).

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