Multifunctional sampling device easy for oil-water separation

Abstract

The present application relates to the technical field of oil-water separation, in particular to a multifunctional sampling device easy to separate oil and water, which comprises a rack, a first collecting cylinder, a second collecting cylinder, a liquid inlet, an oil outlet pipeline, a liquid separation grid and a rotary driver, the bottom end of the second collecting cylinder is coaxially provided with a movable base, the upper side of the movable base is provided with a conical surface with a diameter decreasing upwards, an axle hole is arranged at the axis of the movable base, a plugging column is inserted into the axle hole, a side scraping blade is arranged at the bottom of the second collecting cylinder, and a second linear driver is arranged to drive the side scraping blade to move horizontally along the radial direction of the second collecting cylinder, the rotation of the second collecting cylinder can make the plugging plate on the liquid separation grid automatically plug the waist-shaped hole, so as to separate the petroleum solution and the aqueous solution, the movable base can be moved downwards, and the side scraping blade can scrape off the impurities accumulated on the surface of the conical surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil-water separation, in particular to a multifunctional sampling device easy to separate oil and water. BACKGROUND

[0002] In the daily production of oil fields, the formation conditions are complex and diverse, and the current development situation is in the middle and late stages, and it is difficult to maintain stable production for oil well exploitation. In order to ensure the normal production of oil wells, it is necessary to track the production status of oil wells frequently, which requires continuous sampling at the wellhead for testing. Due to the high water content in the current oil wells, a considerable amount of well fluid needs to be collected at the wellhead to send back to the laboratory to extract crude oil, and then the extracted crude oil is tested.

[0003] Chinese patent CN209043652U discloses a multifunctional sampling device easy to separate oil and water. It includes a liquid inlet, a handle, a first filter grid, a second filter grid, an internal thread buckle, a rubber base, a water solution vessel, a grid switch, a petroleum vessel, a safety valve, a rigid tightening ring, a butterfly knob, a threaded rod, a safety valve cover, a safety valve seat, a scale, a grid linkage shaft, a grid switch rubber handle, etc. When the device is used, the petroleum solution is extracted on the upper side, and the water solution is extracted on the lower side. During the extraction process, the liquid flow influences each other, and the filter grid needs to be manually closed, which is more troublesome. In addition, the grid filters impurities in the water solution, which will affect the grid after long-term accumulation, and also affect the water solution passing through the grid, affecting the separation efficiency of oil and water. SUMMARY

[0004] In view of the above problems, it is necessary to provide a multifunctional sampling device easy to separate oil and water in view of the problems of the prior art.

[0005] To solve the problems of the prior art, the technical scheme adopted by the present application is:

[0006] The utility model provides a multifunctional sampling device easy to oil water separation, including frame and the first collection cylinder and the second collection cylinder installed on the frame, be provided with liquid inlet and oil outlet pipeline on the first collection cylinder, the first collection cylinder fixed mounting is in the frame, the first collection cylinder is rotatably connected between the second collection cylinder, be provided with the rotary driver for driving the second collection cylinder rotates around the own axis on the frame, the second collection cylinder is located below the first collection cylinder, the bottom rotatable mounting of first collection cylinder has the liquid separation grid, and a plurality of waist type holes and the blocking plate for blocking waist type hole are arranged on the liquid separation grid; the bottom end of oil outlet pipeline extends to the upper side of liquid separation grid; the bottom end of second collection cylinder coaxially arranged has movable base, the upper side of movable base is provided with the taper surface that reduces in diameter upwards, the shaft hole is arranged at movable base axis, and the first straight line segment, expansion section and second straight line segment are arranged from top to bottom in the shaft hole, and the inner diameter of second straight line segment is greater than the inner diameter of first straight line segment, and the blocking column is inserted in the shaft hole, and the diameter of blocking column is same with the inner diameter of first straight line segment, and the connecting pipe is coaxially arranged at the bottom of shaft hole in movable base; the bottom platform is arranged below the second collection cylinder in the frame, and the guide sleeve is arranged on the bottom platform, and the connecting pipe is coaxially arranged in the guide sleeve, and the liquid outlet pipeline is arranged below the guide sleeve in the bottom platform; the first straight line driver for driving movable base and blocking column moves in vertical direction is fixedly installed on the frame, and the side scraping piece and the second straight line driver for driving side scraping piece moves horizontally along the radial direction of second collection cylinder are arranged at the bottom of second collection cylinder in the frame, and after movable base moves downward, the second straight line driver drives side scraping piece 14 and moves horizontally to the taper surface of movable base, and the collection box is arranged below side scraping piece in the frame.

[0007] Preferably, the waist type hole extends along the radial direction of the liquid separation grid, and the end of the waist type hole towards the axis of the liquid separation grid is provided with a hinged column, and the end of the blocking plate away from the hinged column is provided with a contact rod extending vertically downward; the liquid separation grid is provided with an elastic sheet on one side of each waist type hole, and the elastic sheet is elastically connected to the blocking plate, and the elastic force of the elastic sheet causes the blocking plate to rotate around the hinged column to release the waist type hole; the mounting ring is coaxially mounted on the top of the second collection cylinder, and the mounting ring is provided with the same number of push plates as the waist type holes, and when the second collection cylinder rotates, the push plates contact the contact rods to push the blocking plates to block the waist type holes; the liquid separation grid is provided with a positioning plate on the side provided with the elastic sheet of each waist type hole, and when the blocking plate abuts against the positioning plate, the waist type hole is completely blocked.

[0008] Preferably, the second collection cylinder is provided with a gear slot around the outer wall, and the working end of the rotary driver is transmissionally connected with a gear, and the gear is meshingly connected with the gear slot.

[0009] Preferably, the bottom end of the sealing column is provided with a vertically downward extending guide rod, which passes through the liquid outlet pipe and extends to the outside of the liquid outlet pipe. One end of the guide rod located outside the liquid outlet pipe is fixedly connected to a movable plate. The movable plate is slidably mounted on the base of the frame. The working end of the first linear actuator is fixedly connected to the movable plate, and the working end of the first linear actuator is set to move in the vertical direction.

[0010] Preferably, a limiting ring is coaxially provided on the sealing column, and the outer wall of the limiting ring is in contact with the inner wall of the second straight segment; the upper end of the connecting pipe extends into the second straight segment of the shaft hole, and when the sealing column moves down to the point where the limiting ring is in contact with the top of the connecting pipe, the sealing column drives the movable base to move down synchronously.

[0011] Preferably, a spring is fitted on the guide sleeve, and a rotating ring is fixedly installed on the top of the spring. The spring applies an elastic force to move the rotating ring upward, and the rotating ring is rotatably installed at the bottom of the movable base.

[0012] Preferably, the second collecting cylinder is provided with at least two vertically downward extending guide rods, which are located on one side of the axis of the second collecting cylinder; the movable base is provided with a guide hole that is in the same straight line as the axis of the guide rod, the guide rod is inserted into the guide hole and extends to the bottom of the movable base, and a limit head is coaxially provided at the bottom end of the guide rod, the diameter of the limit head being larger than the diameter of the guide hole.

[0013] Preferably, the bottom of the second collecting cylinder is provided with a plurality of filter holes, which are distributed at equal angles around the periphery of the second collecting cylinder. When the movable base is attached to the bottom of the second collecting cylinder, the periphery of the movable base is attached to the inner wall of the second collecting cylinder to block the filter holes. A collecting ring is provided on the frame to surround the outside of the second collecting cylinder. The opening of the collecting ring is attached to the outer wall of the second collecting cylinder, and the filter holes are all located in the opening of the collecting ring. A water outlet branch pipe is provided on the collecting ring, which is connected to the liquid outlet pipe.

[0014] The advantages of this invention compared to the prior art are:

[0015] Firstly, in this invention, the second collecting cylinder is rotatably installed at the bottom of the first collecting cylinder. The aqueous solution can flow through the waist-shaped holes on the separating grid set between the first and second collecting cylinders. When the water level of the aqueous solution in the first and second collecting cylinders exceeds the top of the separating grid, the rotary driver on the frame can drive the second collecting cylinder to rotate and cause the sealing plate on the separating grid to automatically seal the waist-shaped holes, separating the petroleum solution and the aqueous solution in the first and second collecting cylinders. The process of separating petroleum and water will not affect each other and cause secondary mixing.

[0016] Secondly, in this invention, the bottom of the second collecting cylinder is sealed by a movable base, and the shaft hole of the movable base is sealed by a sealing column. The presence of the conical surface above the movable base allows impurities in the aqueous solution to accumulate around the conical surface of the movable base under the action of gravity. After the water in the second collecting cylinder is easily drained, the movable base can move down, and the side scraper on the frame can be inserted between the bottom of the second collecting cylinder and the conical surface of the movable base and fit against the conical surface of the movable base. Therefore, during the synchronous rotation of the second collecting cylinder and the movable base, the side scraper can scrape off the impurities accumulated on the conical surface.

[0017] Thirdly, the movable base in this invention can be lowered to maintain the seal on the bottom opening of the second collecting cylinder, but release the seal on the filter hole. The aqueous solution can enter the collecting ring surrounding the outside of the second collecting cylinder through the filter hole, and enter the liquid outlet pipe through the water outlet branch pipe on the collecting ring, thus avoiding waste of the aqueous solution. The filter hole can filter impurities, thereby preventing impurities from entering the liquid outlet pipe. Attached Figure Description

[0018] Figure 1 This is a three-dimensional diagram of a multifunctional sampling device that facilitates oil-water separation;

[0019] Figure 2 This is a front view of a multifunctional sampling device that facilitates oil-water separation;

[0020] Figure 3 It is a multifunctional sampling device that is easy to separate oil and water. In the first working state, along Figure 2 Sectional view of section AA;

[0021] Figure 4 yes Figure 2 Sectional view of section BB;

[0022] Figure 5 It is a multifunctional sampling device that is easy to separate oil and water. In the first working state, along Figure 2 A three-dimensional sectional view at point AA;

[0023] Figure 6 In the second working state, a multifunctional sampling device that facilitates oil-water separation is used along... Figure 2 Sectional view of section AA;

[0024] Figure 7 yes Figure 6 A magnified view of a portion at point C;

[0025] Figure 8 It is a multifunctional sampling device that facilitates oil-water separation, operating in the third working state along... Figure 2 Sectional view of section AA;

[0026] Figure 9 yesFigure 8 A magnified view of a portion at point D;

[0027] Figure 10 It is a multifunctional sampling device that facilitates oil-water separation, operating in its fourth working state along... Figure 2 Sectional view of section AA;

[0028] Figure 11 yes Figure 10 A magnified view of a portion at point E.

[0029] The following are the labels in the diagram: 1. Frame; 11. Rotary actuator; 111. Gear; 12. Base; 121. Guide sleeve; 122. Liquid outlet pipe; 123. Spring; 124. Rotary ring; 13. First linear actuator; 14. Side scraper; 15. Second linear actuator; 16. Collection tank; 17. Collection ring; 171. Water outlet branch pipe; 2. First collection cylinder; 21. Liquid inlet; 22. Oil outlet pipe; 3. Second collection cylinder; 31. Mounting ring; 311. Push plate; 32. Toothed groove; 33. Guide rod; 34. Filter hole; 4. Separating grid; 41. Waist-shaped hole; 411. Positioning plate; 42. Sealing plate; 421. Contact rod; 43. Hinge column; 44. Elastic sheet; 5. Movable base; 51. Conical surface; 52. Shaft hole; 521. First straight section; 522. Expansion section; 523. Second straight section; 53. Sealing column; 531. Guide rod; 532. Moving plate; 533. Limiting ring; 54. Connecting pipe; 55. Guide hole. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1 to 11 :

[0032] A multifunctional sampling device for easy oil-water separation includes a frame 1, and a first collection cylinder 2 and a second collection cylinder 3 mounted on the frame 1. The first collection cylinder 2 is provided with a liquid inlet 21 and an oil outlet pipe 22. The first collection cylinder 2 is fixedly mounted on the frame 1, and the first collection cylinder 2 and the second collection cylinder 3 are rotatably connected. The frame 1 is provided with a rotary driver 11 for driving the second collection cylinder 3 to rotate around its own axis. The second collection cylinder 3 is located below the first collection cylinder 2. A liquid separating grid 4 is rotatably mounted on the bottom of the first collection cylinder 2. The liquid separating grid 4 is provided with a plurality of oblong holes 41 and a sealing plate 42 for sealing the oblong holes 41. The bottom end of the oil outlet pipe 22 extends to the top of the liquid separating grid 4. A movable base 5 is coaxially provided at the bottom end of the second collection cylinder 3. The upper side of the movable base 5 is provided with a conical surface 51 with an upwardly tapered diameter (e.g., Figure 7As shown, the movable base 5 has a shaft hole 52 at its axis. From top to bottom, the shaft hole 52 has a first straight section 521, an expansion section 522, and a second straight section 523. The inner diameter of the second straight section 523 is larger than the inner diameter of the first straight section 521. A sealing post 53 is inserted into the shaft hole 52, and the diameter of the sealing post 53 is the same as the inner diameter of the first straight section 521. A connecting pipe 54 is coaxially mounted on the movable base 5 at the bottom of the shaft hole 52. A base platform 12 is located below the second collecting cylinder 3 on the frame 1. A guide sleeve 121 is mounted on the base platform 12, and the connecting pipe 54 is coaxially mounted on the guide sleeve 121. Inside the sleeve 121, the base 12 is located below the guide sleeve 121 and has a liquid outlet pipe 122. The frame 1 is fixedly installed with a first linear actuator 13 that drives the movable base 5 and the sealing column 53 to move in the vertical direction. The frame 1 is located at the bottom of the second collection cylinder 3 and has a side scraper 14 and a second linear actuator 15 that drives the side scraper 14 to move horizontally along the radial direction of the second collection cylinder 3. After the movable base 5 moves down, the second linear actuator 15 drives the side scraper 14 to move horizontally to fit the conical surface 51 of the movable base 5. The frame 1 is located below the side scraper 14 and has a collection box 16.

[0033] The sampling device in this application allows the aspirated solution to be introduced into the first collection cylinder 2 and the second collection cylinder 3 through the inlet 21 at the top of the first collection cylinder 2. The water and petroleum in the solution separate into layers under gravity, with the aqueous solution at the bottom and the petroleum solution floating at the top. In this embodiment, the first collection cylinder 2, located at the top, is fixedly mounted on the frame 1, while the second collection cylinder 3, located at the bottom, is rotatably mounted on the bottom of the first collection cylinder 2. The first and second collection cylinders 2 and 3 can be made entirely of transparent material or partially transparent material, allowing staff to easily observe the separation of the oil and aqueous solutions. The aqueous solution can flow through the oblong holes 41 on the separating grid 4 located between the first and second collection cylinders 2 and 3. Under normal conditions, the bottom of the second collection cylinder 3 is blocked by the movable base 5, and the shaft hole 52 at the axis of the movable base 5 is blocked by the sealing column 53 to prevent the aqueous solution from flowing out. Due to the presence of the conical surface 51 above the movable base 5, impurities in the aqueous solution are filtered out. Under the action of gravity, the mass accumulates around the conical surface 51 of the movable base 5. When the water level of the aqueous solution in the first collection cylinder 2 and the second collection cylinder 3 exceeds the top of the separating grid 4, the rotary driver 11 on the frame 1 can drive the second collection cylinder 3 to rotate and cause the sealing plate 42 on the separating grid 4 to seal the waist-shaped hole 41, separating the petroleum solution in the first collection cylinder 2 and the second collection cylinder 3 from the aqueous solution. Since the oil-water ratio in the oil-water mixture extracted from different regions is different, in this embodiment, the length of the first collection cylinder 2 can be set to be greater than the length of the second collection cylinder 3, so that the space above the separating grid 4 is greater than the space below. The specific length of the first collection cylinder 2 and the length of the second collection cylinder 3 can be set according to the actual situation to ensure that even if the water ratio in the extracted oil-water mixture is at the maximum ratio known from the existing data, after the oil-water mixture fills the first collection cylinder 2 and the second collection cylinder 3, the aqueous solution can still completely fill the second collection cylinder 3 and reach the position of the separating grid 4.When the oblong hole 41 of the liquid separator 4 is blocked by the blocking plate 42, the second collection cylinder 3 is full of aqueous solution and sedimented impurities. At this time, the blocking column 53 located in the shaft hole 52 can move down. In this embodiment, the shaft hole 52 is composed of a first straight section 521, an expansion section 522, and a second straight section 523 from top to bottom. The diameter of the blocking column 53 is the same as the inner diameter of the first straight section 521. Therefore, when the blocking column 53 is at its highest position, it blocks the first straight section 521. When the blocking column 53 moves down to the position of the expansion section 522 or the second straight section 523, a gap is generated between the inner wall of the shaft hole 52 and the periphery of the blocking column 53. The aqueous solution in the second collection cylinder 3 can flow into the connecting pipe 54 through the shaft hole 52. The connecting pipe 54 connects the guide sleeve 121 on the base 12 and the liquid outlet pipe 122, so that the aqueous solution can be discharged from the liquid outlet pipe 122. Due to the oil outlet pipe 22 The bottom extends above the separating grid 4, so any amount of petroleum solution in the first collecting cylinder 2 can be discharged out through the oil outlet pipe 22 to achieve oil-water separation. The process of oil and water separation will not affect each other and cause secondary mixing. In this embodiment, after the aqueous solution in the second collecting cylinder 3 is discharged, a large amount of impurities remain on the periphery of the cone surface 51. The movable base 5 can move down along the axis of the second collecting cylinder 3. After the movable base 5 moves down a certain distance, the second linear driver 15 on the frame 1 can drive the side scraper 14 to move horizontally. The side scraper 14 is inserted between the bottom of the second collecting cylinder 3 and the cone surface 51 of the movable base 5, and is in contact with the surface of the cone surface 51 of the movable base 5. Therefore, during the synchronous rotation of the second collecting cylinder 3 and the movable base 5, the side scraper 14 keeps its position fixed and can scrape off the impurities accumulated on the surface of the cone surface 51. The scraped impurities fall into the collection box 16 with the opening facing upward. In this embodiment, the second linear actuator 15 can be a cylinder or an electric push rod, etc. The bottom of the side scraper 14 has the same curvature as the conical surface 51 of the movable base 5 to ensure a close fit with the conical surface 51.

[0034] To address the issue of how to automatically seal the oblong hole 41 with the sealing plate 42 when the second collecting cylinder 3 rotates, the following features are specifically designed:

[0035] The oblong hole 41 extends radially along the liquid distribution grid 4. A hinged post 43 is provided at one end of the oblong hole 41 facing the axis of the liquid distribution grid 4. The sealing plate 42 is rotatably mounted on the hinged post 43 at one end facing the axis of the liquid distribution grid 4. A vertically downward extending contact rod 421 is provided at the end of the sealing plate 42 away from the hinged post 43. An elastic sheet 44 is provided on one side of each oblong hole 41 of the liquid distribution grid 4. The elastic sheet 44 elastically connects to the sealing plate 42, and the elastic force of the elastic sheet 44 causes the sealing plate 42 to... 2. Rotate around the hinge post 43 to release the waist-shaped hole 41; The top of the second collecting cylinder 3 is coaxially mounted with an installation ring 31, and the installation ring 31 is provided with the same number of push plates 311 as the waist-shaped hole 41. When the second collecting cylinder 3 rotates, the push plate 311 contacts the contact rod 421 to push the sealing plate 42 to seal the waist-shaped hole 41. The liquid separation grid 4 is provided with a positioning plate 411 on the side where each waist-shaped hole 41 is provided with an elastic piece 44. When the sealing plate 42 is attached to the positioning plate 411, it completely seals the waist-shaped hole 41.

[0036] In this embodiment, when the second collection cylinder 3 is driven to rotate by the rotary driver 11, the mounting ring 31 at the top of the second collection cylinder 3 rotates synchronously with the second collection cylinder 3. The rotation of the mounting ring 31 drives the push plate 311 to move. After the push plate 311 contacts the contact rod 421 at one end of the sealing plate 42, it pushes the sealing plate 42 to rotate around the axis of the hinge column 43 until the sealing plate 42 fits against the positioning plate 411 on one side of the waist-shaped hole 41. At this time, the sealing plate 42 completely seals the waist-shaped hole 41, isolating the solution in the first collection cylinder 2 and the second collection cylinder 3. Then the second collection cylinder 3 continues to rotate, and the sealing plate 42 is limited by the positioning plate 411, so that the liquid scoring grid 4 rotates synchronously with the second collection cylinder 3. During this process, the sealing plate 42 maintains the sealing of the waist-shaped hole 41. When the second collecting cylinder 3 stops rotating, the sealing plate 42 rotates around the hinge post 43 to one side of the waist-shaped hole 41 under the elastic force of the elastic plate 44, releasing the waist-shaped hole 41 so that the solution in the first collecting cylinder 2 can re-enter the second collecting cylinder 3.

[0037] To address the issue of how to make the second collecting cylinder 3 rotate, the following features were specifically designed:

[0038] The second collecting cylinder 3 is provided with a toothed groove 32 surrounding the outer wall. The working end of the rotary driver 11 is connected to a gear 111, and the gear 111 meshes with the toothed groove 32.

[0039] In this embodiment, the rotary driver 11 can be a servo motor. The working end of the rotary driver 11 is connected to a gear 111, which can be a bevel gear or the like. The gear 111 directly meshes with the corresponding tooth groove 32 on the periphery of the second collecting cylinder 3, so that the second collecting cylinder 3 can be driven to rotate after the rotary driver 11 is started.

[0040] To address the issue of how to move the sealing post 53 within the shaft hole 52, the following features are specifically designed:

[0041] The bottom end of the sealing column 53 is provided with a vertically downward extending guide rod 531. The guide rod 531 passes through the liquid outlet pipe 122 and extends to the outside of the liquid outlet pipe 122. One end of the guide rod 531 located outside the liquid outlet pipe 122 is fixedly connected to a moving plate 532. The moving plate 532 is slidably mounted on the base 12 of the frame 1. The working end of the first linear actuator 13 is fixedly connected to the moving plate 532. The working end of the first linear actuator 13 is set to move in the vertical direction.

[0042] In this embodiment, the guide rod 531 at the bottom of the sealing column 53 extends to the outside of the liquid outlet pipe 122. The liquid outlet pipe 122 is provided with a dynamic seal at the contact point with the guide rod 531 to prevent water leakage. The working end of the first linear actuator 13 is fixedly connected to the moving plate 532 provided at one end of the guide rod 531. The first linear actuator 13 drives the moving plate 532 to move and pull the sealing column 53 vertically inside the shaft hole 52. The first linear actuator 13 can be a cylinder or an electric push rod, etc.

[0043] To address the issue of how the first linear actuator 13 can drive the movable base 5 and the sealing post 53 to move synchronously, the following features are specifically designed:

[0044] A limiting ring 533 is coaxially provided on the sealing column 53, and the outer wall of the limiting ring 533 is in contact with the inner wall of the second straight segment 523; the upper end of the connecting pipe 54 extends into the second straight segment 523 of the shaft hole 52. When the sealing column 53 moves down to the point where the limiting ring 533 is in contact with the top of the connecting pipe 54, the sealing column 53 drives the movable base 5 to move down synchronously.

[0045] In this embodiment, the connecting pipe 54 extends into the second straight section 523 of the shaft hole 52. A limiting ring 533 is provided on the part of the sealing column 53 located in the second straight section 523. The limiting ring 533 fits against the inner wall of the second straight section 523 and cooperates with the sealing column 53 to fit against the inner wall of the first straight section 521 to guide the movement of the sealing column 53 and ensure that the sealing column 53 moves in the vertical direction. When the sealing column 53 moves down to the point where the limiting ring 533 of the sealing column 53 fits against the top of the connecting pipe 54, the movable base 5 is pulled by the sealing column 53 and moves down synchronously with the sealing column 53, so that the movable base 5 is separated from the bottom of the second collection cylinder 3, which makes it convenient for the side scraper 14 to be inserted into the gap between the second collection cylinder 3 and the movable base 5 to clean the surface of the cone 51.

[0046] To address the issue of ensuring the movable base 5 remains in contact with the bottom of the second collecting cylinder 3 without the pulling force of the sealing column 53, the following features are specifically designed:

[0047] A spring 123 is fitted on the guide sleeve 121. A rotating ring 124 is fixedly installed on the top of the spring 123. The spring 123 applies an elastic force to move the rotating ring 124 upward. The rotating ring 124 is rotatably installed at the bottom of the movable base 5.

[0048] In this embodiment, the connecting pipe 54 at the bottom of the movable base 5 is inserted into the guide sleeve 121 on the base 12. When the movable base 5 moves downward, the connecting pipe 54 moves in the guide sleeve 121, keeping the aqueous solution in the second collecting cylinder 3 flowing through the guide sleeve 121 to the outlet pipe 122. The connecting pipe 54 in the guide sleeve 121 can also guide the movement of the movable base 5. A dynamic seal is provided at the connection between the guide sleeve 121 and the connecting pipe 54 to prevent water leakage. The spring 123 installed outside the guide sleeve 121 is elastically connected to the rotating ring 124. The rotating ring 124 is rotatably installed at the bottom of the movable base 5. Therefore, the movable base 5 can be moved upward by the elastic force of the spring 123, overcoming the gravity of the aqueous solution in the second collecting cylinder 3 and maintaining contact with the bottom of the second collecting cylinder 3. When the sealing column 53 pulls the movable base 5 downward, it can overcome the elastic force of the spring 123.

[0049] To address the issue of ensuring that the movable base 5 rotates in sync with the second collecting cylinder 3, the following features were specifically designed:

[0050] The second collecting cylinder 3 is provided with at least two vertically downward extending guide rods 33, which are located on one side of the axis of the second collecting cylinder 3. The movable base 5 is provided with a guide hole 55 that is in the same straight line as the axis of the guide rod 33. The guide rod 33 is inserted into the guide hole 55 and extends to the bottom of the movable base 5. A limit head is coaxially provided at the bottom end of the guide rod 33, and the diameter of the limit head is larger than the diameter of the guide hole 55.

[0051] In this embodiment, a guide rod 33 is installed inside the second collecting cylinder 3 and inserted into the connecting pipe 54 of the movable base 5 so that the movable base 5 rotates when the second collecting cylinder 3 rotates. When the movable base 5 moves in the vertical direction, the guide rod 33 can also guide the movement of the movable base 5. A limit head is provided at the bottom of the guide rod 33. When the movable base 5 moves down to fit the limit head, the movement of the movable base 5 is restricted. At this time, the side scraper 14 can be inserted into the gap between the second collecting cylinder 3 and the movable base 5 and fit against the surface of the conical surface 51.

[0052] Due to the presence of the conical surface 51, some aqueous solution remains on the bottom periphery of the second collecting cylinder 3 at a position lower than the upper opening of the shaft hole 52. To prevent a small amount of aqueous solution from flowing out and being wasted after the movable base 5 detaches from the bottom of the second collecting cylinder 3, the following features are specifically designed:

[0053] The bottom of the second collecting cylinder 3 is provided with several filter holes 34, which are distributed at equal angles around the second collecting cylinder 3. When the movable base 5 is attached to the bottom of the second collecting cylinder 3, the movable base 5 is attached to the inner wall of the second collecting cylinder 3 to block the filter holes 34. A collecting ring 17 is provided on the frame 1 to surround the outside of the second collecting cylinder 3. The opening of the collecting ring 17 is attached to the outer wall of the second collecting cylinder 3, and the filter holes 34 are all located in the opening of the collecting ring 17. A water outlet branch pipe 171 is provided on the collecting ring 17, and the water outlet branch pipe 171 is connected to the liquid outlet pipe 122.

[0054] In this embodiment, the bottom periphery of the second collecting cylinder 3 is also provided with several filter holes 34. Under normal conditions, the movable base 5 fits against the bottom of the second collecting cylinder 3 and seals the filter holes 34. When the aqueous solution in the second collecting cylinder 3 is discharged, some aqueous solution remains in the impurities accumulated on the bottom periphery of the conical surface 51 of the movable base 5. At this time, the first linear actuator 13 can drive the sealing column 53 to move down to fit the top of the connecting pipe 54 and drive the movable base 5 to move down to the first position point. At this time, the movable base 5 keeps the bottom opening of the second collecting cylinder 3 sealed, but releases the seal on the filter holes 34. The aqueous solution can enter the collecting ring 17 surrounding the outside of the second collecting cylinder 3 through the filter holes 34, and enter the liquid outlet pipe 122 through the water outlet branch pipe 171 on the collecting ring 17, avoiding the waste of aqueous solution. The filter holes 34 can filter impurities to prevent impurities from entering the liquid outlet pipe 122. When the aqueous solution is completely discharged, the first linear actuator 13 drives the sealing column 53 and the movable base 5 to continue to move down to fit the limiting head of the movable base 5, reaching the second position point, and enter the impurity removal work.

[0055] Working Principle: During use, the pumped solution is introduced into the first collection cylinder 2 and the second collection cylinder 3 through the inlet 21 at the top of the first collection cylinder 2. Water and petroleum in the solution separate under gravity. The aqueous solution can flow through the oblong hole 41 on the separating grid 4 between the first and second collection cylinders 2 and 3. Under normal conditions, the bottom of the second collection cylinder 3 is blocked by the movable base 5, and the shaft hole 52 at the axis of the movable base 5 is blocked by the sealing column 53. Impurities in the aqueous solution accumulate around the conical surface 51 of the movable base 5 under gravity. When the water level in the first and second collection cylinders 2 and 3 exceeds the top of the separating grid 4, the rotary driver 11 on the frame 1 drives the second collection cylinder 3 to rotate, causing the sealing plate 42 on the separating grid 4 to block the oblong hole 41, separating the petroleum solution from the aqueous solution in the first and second collection cylinders 2 and 3. The sealing column 53 in the shaft hole 52 moves downwards, and the second collection cylinder... The aqueous solution in the collecting cylinder 3 can flow into the connecting pipe 54 through the shaft hole 52. The connecting pipe 54 connects the guide sleeve 121 on the base 12 and the liquid outlet pipe 122, so that the aqueous solution is discharged from the liquid outlet pipe 122. The petroleum solution in the first collecting cylinder 2 is discharged outward through the oil outlet pipe 22, realizing oil-water separation. After the water in the second collecting cylinder 3 is easily discharged, a large amount of impurities remain on the periphery of the cone surface 51. The movable base 5 can move down along the axis of the second collecting cylinder 3. After the movable base 5 moves down a certain distance, the second linear drive 15 on the frame 1 can drive the side scraper 14 to move horizontally. The side scraper 14 is inserted between the bottom of the second collecting cylinder 3 and the cone surface 51 of the movable base 5, and is in contact with the surface of the cone surface 51 of the movable base 5. Therefore, during the synchronous rotation of the second collecting cylinder 3 and the movable base 5, the side scraper 14 remains in a fixed position and scrapes off the impurities accumulated on the surface of the cone surface 51. The scraped impurities fall into the collecting box 16 with the opening facing upward.

[0056] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A multifunctional sampling device easy for oil-water separation, comprising a frame (1), and a first collecting cylinder (2) and a second collecting cylinder (3) installed on the frame (1), a liquid inlet (21) and an oil outlet pipeline (22) are arranged on the first collecting cylinder (2), characterized in that, The first collecting cylinder (2) is fixedly installed on the rack (1), the first collecting cylinder (2) is rotatably connected between the second collecting cylinder (3), the rack (1) is provided with a rotating driver (11) for driving the second collecting cylinder (3) to rotate around the axis thereof, the second collecting cylinder (3) is located below the first collecting cylinder (2), the bottom of the first collecting cylinder (2) is rotatably installed with a liquid distribution grid (4), the liquid distribution grid (4) is provided with a plurality of waist-shaped holes (41), and the waist-shaped holes (41) are provided with a plurality of waist-shaped holes (41) and a blocking plate (42) for blocking the waist-shaped holes (41); The bottom end of the oil outlet pipeline (22) extends above the liquid distribution grid (4); The bottom end of the second collecting cylinder (3) is coaxially provided with a movable base (5), the upper side of the movable base (5) is provided with a tapered surface (51) which is reduced in diameter upward, the axis of the movable base (5) is provided with a shaft hole (52), the shaft hole (52) is provided with a first straight section (521), an expansion section (522) and a second straight section (523) from top to bottom, the inner diameter of the second straight section (523) is greater than that of the first straight section (521), a blocking column (53) is inserted into the shaft hole (52), the diameter of the blocking column (53) is the same as that of the first straight section (521), and the movable base (5) is coaxially installed with a connecting pipe (54) at the bottom of the shaft hole (52); The rack (1) is provided with a bottom stand (12) below the second collecting cylinder (3), the bottom stand (12) is provided with a guide sleeve (121), the connecting pipe (54) is coaxially installed in the guide sleeve (121), and the bottom stand (12) is provided with a liquid outlet pipeline (122) below the guide sleeve (121); The rack (1) is fixedly installed with a first linear driver (13) for driving the movable base (5) and the blocking column (53) to move in the vertical direction, the rack (1) is provided with a side scraping piece (14) at the bottom of the second collecting cylinder (3), and a second linear driver (15) for driving the side scraping piece (14) to move horizontally along the radial direction of the second collecting cylinder (3), after the movable base (5) moves downward, the second linear driver (15) drives the side scraping piece (14) to move horizontally to the tapered surface (51) of the movable base (5), and the rack (1) is provided with a collecting box (16) below the side scraping piece (14).

2. The multifunctional sampling device easy for oil-water separation according to claim 1, characterized in that, The waist-shaped hole (41) extends along the radial direction of the liquid distribution grid (4), the waist-shaped hole (41) is provided with a hinged column (43) at one end facing the axis of the liquid distribution grid (4), the blocking plate (42) is rotatably installed on the hinged column (43) at one end facing the axis of the liquid distribution grid (4), and the blocking plate (42) is provided with a contact rod (421) extending vertically downward at the end away from the hinged column (43); The liquid distribution grid (4) is provided with an elastic sheet (44) on one side of each waist-shaped hole (41), the elastic sheet (44) is elastically connected to the blocking plate (42), and the elastic force of the elastic sheet (44) makes the blocking plate (42) rotate around the hinged column (43) to release the waist-shaped hole (41); The second collecting cylinder (3) is coaxially provided with a mounting ring (31) at the top, and the mounting ring (31) is provided with the same number of push plates (311) as the waist-shaped holes (41); when the second collecting cylinder (3) rotates, the push plates (311) contact the contact rods (421) to push the blocking plates (42) to block the waist-shaped holes (41); the liquid distribution grid (4) is provided with a positioning plate (411) on one side of each waist-shaped hole (41) provided with an elastic sheet (44); when the blocking plate (42) is attached to the positioning plate (411), the waist-shaped hole (41) is completely blocked.

3. The multifunctional sampling device easy for oil-water separation according to claim 1, characterized in that, The second collecting cylinder (3) is provided with a gear slot (32) around the outer wall, and the working end of the rotary driver (11) is transmissionally connected with a gear (111), which is meshingly connected with the gear slot (32).

4. The multifunctional sampling device easy for oil-water separation according to claim 1, characterized in that, The bottom end of the blocking column (53) is provided with a vertically downward extending guide rod (531), which extends through the liquid outlet pipeline (122) to the outside of the liquid outlet pipeline (122), and one end of the guide rod (531) outside the liquid outlet pipeline (122) is fixedly connected with a moving plate (532), which is slidingly installed on the bottom table (12) of the rack (1); the working end of the first linear driver (13) is fixedly connected with the moving plate (532), and the working end of the first linear driver (13) is arranged to move in the vertical direction.

5. The multifunctional sampling device easy for oil-water separation according to claim 4, characterized in that, The blocking column (53) is coaxially provided with a limiting ring (533), and the outer wall of the limiting ring (533) is attached to the inner wall of the second linear segment (523); The upper end of the connecting pipe (54) extends into the second linear segment (523) of the shaft hole (52), and when the blocking column (53) moves downward to the limiting ring (533) attached to the top end of the connecting pipe (54), the blocking column (53) drives the movable base (5) to move downward synchronously.

6. The multifunctional sampling device easy for oil-water separation according to claim 5, characterized in that, The guide sleeve (121) is provided with a spring (123), and the top of the spring (123) is fixedly installed with a rotating ring (124); the spring (123) applies an elastic force to the rotating ring (124) to move upward, and the rotating ring (124) is rotationally installed at the bottom of the movable base (5).

7. The multifunctional sampling device according to claim 6, wherein, The second collecting cylinder (3) is provided with at least two vertically downward extending guide rods (33), which are located on one side of the axis of the second collecting cylinder (3); The movable base (5) is provided with a guide hole (55) in the same straight line as the axis of the guide rod (33), the guide rod (33) is inserted into the guide hole (55) and extends below the movable base (5), and the bottom end of the guide rod (33) is coaxially provided with a limiting head with a diameter larger than that of the guide hole (55).

8. The multifunctional sampling device according to claim 1, wherein, The bottom of the second collecting cylinder (3) is provided with a plurality of filter holes (34), which are distributed at equal angles around the periphery of the second collecting cylinder (3); when the movable base (5) is attached to the bottom of the second collecting cylinder (3), the periphery of the movable base (5) is attached to the inner wall of the second collecting cylinder (3) to block the filter holes (34); The rack (1) is provided with a collecting ring (17) around the outside of the second collecting cylinder (3), and the opening of the collecting ring (17) is attached to the outer wall of the second collecting cylinder (3); the filter holes (34) are all located in the opening of the collecting ring (17); The collecting ring (17) is provided with a water outlet branch pipe (171) which communicates with the liquid outlet pipeline (122).

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