Multifunctional sampling device easy for oil-water separation

Abstract

The invention relates to the technical field of oil-water separation, in particular to a multifunctional sampling device easy for oil-water separation, which comprises a rack, a first collecting barrel, a second collecting barrel, a liquid inlet, an oil outlet pipeline, a liquid separation grid and a rotary driver, a movable base is coaxially arranged at the bottom end of the second collecting barrel, and a conical surface with an upward diameter reduced is arranged on the upper side of the movable base; a shaft hole is formed in the axis of the movable base, a plugging column is inserted into the shaft hole, and a side scraping piece and a second linear driver for driving the side scraping piece to horizontally move in the radial direction of the second collecting barrel are arranged at the position, located at the bottom of the second collecting barrel, of the rack; according to the technical scheme, the second collecting barrel rotates, so that a kidney-shaped hole can be automatically blocked by a blocking plate on a liquid separation grid, a petroleum solution and a water solution are separated, the movable base can move downwards, and impurities accumulated on the surface of a conical surface can be scraped away by a side scraping piece.

Description

Technical Field

[0001] The invention relates to the technical field of oil-water separation, and in particular to a multifunctional sampling device which is easy for oil-water separation. Background Art

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

[0003] Chinese patent CN209043652U discloses a multifunctional sampling device that is easy to separate oil and water. It includes a liquid inlet, a handle, a primary filter grid, a secondary filter grid, an internal thread buckle, a rubber base, a water solution container, a grid switch, an oil container, a safety valve, a rigid clamp ring, a butterfly knob, a threaded rod, a safety valve cover, a safety valve seat, a scale line, a grid linkage shaft, a grid switch rubber handle, etc. When the device is in use, the oil solution is extracted on the upper side and the water solution is extracted on the lower side. During the extraction process, the liquid flows affect each other, and the filter grid needs to be closed manually, which is troublesome. In addition, the impurities in the water solution filtered by the grid will affect the grid after long-term accumulation, and will also affect the water solution passing through the grid, affecting the separation efficiency of oil and water. Summary of the invention

[0004] In view of the above problems, it is necessary to provide a multifunctional sampling device that is easy to separate oil and water to address the problems of the existing technology.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] A multifunctional sampling device that is easy to separate oil and water, comprises a frame, and a first collecting cylinder and a second collecting cylinder installed on the frame, the first collecting cylinder is provided with a liquid inlet and an oil outlet pipeline, the first collecting cylinder is fixedly installed on the frame, the first collecting cylinder and the second collecting cylinder are rotatably connected, a rotating driver for driving the second collecting cylinder to rotate around its own axis is provided on the frame, the second collecting cylinder is located below the first collecting cylinder, a liquid separation grid is rotatably installed at the bottom of the first collecting cylinder, a plurality of waist-shaped holes and a sealing plate for sealing the waist-shaped holes are provided on the liquid separation grid; the bottom end of the oil outlet pipeline extends to the top of the liquid separation grid; a movable base is coaxially provided at the bottom end of the second collecting cylinder, a conical surface with a diameter decreasing upward is provided on the upper side of the movable base, an axial hole is provided at the axis of the movable base, and the axial hole is provided with a first straight line segment, An expansion section and a second straight section, the inner diameter of the second straight section is larger than that of the first straight section, a blocking column is inserted in the axial hole, the diameter of the blocking column is the same as the inner diameter of the first straight section, and the movable base is coaxially installed with a connecting pipe at the bottom of the axial hole; a base is provided on the frame below the second collecting cylinder, a guide sleeve is provided on the base, the connecting pipe is coaxially installed in the guide sleeve, and a liquid outlet pipe is provided on the base below the guide sleeve; a first linear drive for driving the movable base and the blocking column to move in the vertical direction is fixedly installed on the frame, a side scraper is provided on the frame at the bottom of the second collecting cylinder, and a second linear drive for driving the side scraper to move horizontally along the radial direction of the second collecting cylinder, after the movable base moves downward, the second linear drive drives the side scraper 14 to move horizontally to fit the conical surface of the movable base, and a collection box is provided on the frame below the side scraper.

[0007] Preferably, the waist-shaped holes extend in the radial direction of the liquid separating grid, and a hinge column is provided at one end of the waist-shaped holes facing the axis of the liquid separating grid, and the sealing plate is rotatably installed on the hinge column at one end facing the axis of the liquid separating grid, and a contact rod extending vertically downward is provided at one end of the sealing plate away from the hinge column; an elastic sheet is provided on one side of each waist-shaped hole of the liquid separating grid, and the elastic sheet is elastically connected to the sealing plate, and the elastic force of the elastic sheet causes the sealing plate to rotate around the hinge column to release the waist-shaped holes; a mounting ring is coaxially installed on the top of the second collecting cylinder, and push plates with the same number as the waist-shaped holes are provided on the mounting ring. When the second collecting cylinder rotates, the push plate contacts the contact rod to push the sealing plate to seal the waist-shaped holes, and a positioning plate is provided on one side of each waist-shaped hole of the liquid separating grid where the elastic sheet is provided, and the waist-shaped hole is completely sealed when the sealing plate is in contact with the positioning plate.

[0008] Preferably, the second collecting cylinder is provided with tooth grooves surrounding the circumference of the outer wall, and the working end of the rotary driver is connected to the gear, and the gear is meshed with the tooth grooves.

[0009] Preferably, a guide rod extending vertically downward is provided at the bottom end of the blocking column, the guide rod 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 drive is fixedly connected to the movable plate, and the working end of the first linear drive is arranged to move in a vertical direction.

[0010] Preferably, a limiting ring is coaxially arranged on the blocking column, and the outer wall of the limiting ring fits the inner wall of the second straight line segment; the upper end of the connecting tube extends into the second straight line segment of the axial hole, and when the blocking column moves down to the point where the limiting ring fits the top of the connecting tube, the blocking column drives the movable base to move down synchronously.

[0011] Preferably, a spring is sleeved on the guide sleeve, a swivel is fixedly mounted on the top of the spring, the spring applies elastic force to move the swivel upward, and the swivel is rotatably mounted on the bottom of the movable base.

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

[0013] Preferably, a plurality of filter holes are arranged at the bottom of the second collecting tube, and the filter holes are distributed at equal angles around the circumference of the second collecting tube. When the movable base is in contact with the bottom of the second collecting tube, the circumference of the movable base is in contact with the inner wall of the second collecting tube to seal the filter holes. A collecting ring surrounding the outside of the second collecting tube is arranged on the frame, and the opening of the collecting ring is in contact with the outer wall of the second collecting tube, and the filter holes are all located in the opening of the collecting ring. A water outlet branch pipe is arranged on the collecting ring, and the water outlet branch pipe is connected to the liquid outlet pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Firstly, the second collecting cylinder in the present invention is rotatably mounted at the bottom of the first collecting cylinder, and the aqueous solution can flow through the waist-shaped holes on the liquid separation grid arranged between the first collecting cylinder and the second collecting cylinder. When the water level of the aqueous solution in the first collecting cylinder and the second collecting cylinder exceeds the upper part of the liquid separation grid, the rotary driver on the frame can drive the second collecting cylinder to rotate, and the sealing plate on the liquid separation grid automatically seals the waist-shaped holes, thereby separating the petroleum solution and the aqueous solution in the first collecting cylinder and the second collecting cylinder, and the separation process of the petroleum and water will not affect each other, causing secondary mixing.

[0016] Secondly, the bottom of the second collecting cylinder in the present invention is blocked by a movable base, and the axial hole of the movable base is blocked by a blocking column. The existence of the conical surface above the movable base can cause impurities in the aqueous solution to accumulate on the side of the conical surface of the movable base under the action of gravity. After the water in the second collecting cylinder is easily discharged, the movable base can be moved downward, 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 with 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 the present invention can be moved down to a position where the bottom opening of the second collecting cylinder is kept sealed but the filter hole is released. 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, thereby avoiding waste of the aqueous solution. The filter hole can filter impurities to avoid impurities entering the liquid outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of a multifunctional sampling device that is easy to separate oil and water;

[0019] Figure 2 It is a front view of a multifunctional sampling device that is easy to separate oil and water;

[0020] Figure 3 It is a multifunctional sampling device that is easy to separate oil and water. Figure 2 A cross-sectional view at AA of FIG.

[0021] Figure 4 yes Figure 2 A cross-sectional view of the section at BB;

[0022] Figure 5 It is a multifunctional sampling device that is easy to separate oil and water. Figure 2 A three-dimensional cross-sectional view at AA;

[0023] Figure 6 It is a multifunctional sampling device that is easy to separate oil and water. Figure 2 A cross-sectional view at AA of FIG.

[0024] Figure 7 yes Figure 6 A partial enlarged view of point C;

[0025] Figure 8 It is a multifunctional sampling device that is easy to separate oil and water. Figure 2 A cross-sectional view at AA of FIG.

[0026] Fig. 9 yes Figure 8 A partial enlarged view of point D;

[0027] Fig.10 It is a multifunctional sampling device that is easy to separate oil and water. Figure 2 A cross-sectional view at AA of FIG.

[0028] Fig.11 yes Fig.10 A partial enlarged view of point E.

[0029] The numbers in the figure are: 1, frame; 11, rotary driver; 111, gear; 12, base; 121, guide sleeve; 122, liquid outlet pipeline; 123, spring; 124, swivel; 13, first linear driver; 14, side scraper; 15, second linear driver; 16, collection box; 17, collection ring; 171, water outlet branch pipe; 2, first collection cylinder; 21, liquid inlet; 22, oil outlet pipeline; 3, second collection cylinder; 31, mounting ring; 311, push plate; 32. Tooth groove; 33. Guide rod; 34. Filter hole; 4. Liquid separation grid; 41. Waist-shaped hole; 411. Positioning plate; 42. Sealing plate; 421. Contact rod; 43. Articulated column; 44. Elastic sheet; 5. Movable base; 51. Conical surface; 52. Axial hole; 521. First straight segment; 522. Expansion segment; 523. Second straight segment; 53. Sealing column; 531. Guide rod; 532. Moving plate; 533. Limiting ring; 54. Connecting pipe; 55. Guide hole. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Reference Figures 1 to 11 :

[0032] A multifunctional sampling device for easy oil-water separation comprises a frame 1, and a first collecting cylinder 2 and a second collecting cylinder 3 mounted on the frame 1, wherein the first collecting cylinder 2 is provided with a liquid inlet 21 and an oil outlet pipeline 22, the first collecting cylinder 2 is fixedly mounted on the frame 1, the first collecting cylinder 2 and the second collecting cylinder 3 are rotatably connected, a rotating driver 11 for driving the second collecting cylinder 3 to rotate around its own axis is provided on the frame 1, the second collecting cylinder 3 is located below the first collecting cylinder 2, a liquid separation grid 4 is rotatably mounted at the bottom of the first collecting cylinder 2, the liquid separation grid 4 is 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 to the top of the liquid separation grid 4; a movable base 5 is coaxially arranged at the bottom end of the second collecting cylinder 3, and a conical surface 51 (such as a conical surface 51 with a tapered diameter that decreases upward) is provided on the upper side of the movable base 5 Figure 7As shown in the figure, an axial hole 52 is arranged at the axis of the movable base 5, and the axial 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 larger than the inner diameter of the first straight section 521. A blocking column 53 is inserted in the axial hole 52, and the diameter of the blocking column 53 is the same as the inner diameter of the first straight section 521. The movable base 5 is coaxially installed with a connecting pipe 54 at the bottom of the axial hole 52; the frame 1 is provided with a base 12 below the second collecting cylinder 3, and a guide sleeve 121 is provided on the base 12. The connecting pipe 54 is coaxially installed on the guide sleeve 121. In the sleeve 121, the base 12 is located below the guide sleeve 121 and is provided with a liquid outlet pipe 122; a first linear drive 13 is fixedly installed on the frame 1 for driving the movable base 5 and the blocking column 53 to move in the vertical direction, and a side scraper 14 is provided on the frame 1 at the bottom of the second collecting cylinder 3, and a second linear drive 15 is provided for driving the side scraper 14 to move horizontally along the radial direction of the second collecting cylinder 3. After the movable base 5 moves downward, the second linear drive 15 drives the side scraper 14 to move horizontally to fit the conical surface 51 of the movable base 5, and a collection box 16 is provided on the frame 1 below the side scraper 14.

[0033] When in use, the sampling device in the present application can introduce the sucked solution into the first collecting tube 2 and the second collecting tube 3 through the liquid inlet 21 at the top of the first collecting tube 2. The water and oil in the solution are separated into layers under the action of gravity, the aqueous solution is located in the lower layer, and the oil solution floats in the upper layer. In this embodiment, the first collecting tube 2 located at the top is fixedly mounted on the frame 1, and the second collecting tube 3 located at the bottom is rotatably mounted on the bottom of the first collecting tube 2. The first collecting tube 2 and the second collecting tube 3 can be made of a whole transparent material or a part of a transparent material, so that it is convenient for the staff to observe the separation position of the internal oil solution and the aqueous solution; the aqueous solution can flow in the direction through the waist-shaped hole 41 on the liquid separation grid 4 set between the first collecting tube 2 and the second collecting tube 3. Under normal conditions, the bottom of the second collecting tube 3 is blocked by the movable base 5, and the axial hole 52 at the axis of the movable base 5 is blocked by the blocking 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 The substances are accumulated on the side of the conical surface 51 of the movable base 5 under the action of gravity. When the water level of the aqueous solution in the first collecting cylinder 2 and the second collecting cylinder 3 exceeds the upper part of the liquid separation grid 4, the rotary driver 11 on the frame 1 can drive the second collecting cylinder 3 to rotate, and make the blocking plate 42 on the liquid separation grid 4 block the waist-shaped hole 41, so as to separate the petroleum solution and the aqueous solution in the first collecting cylinder 2 and the second collecting cylinder 3. Since the oil-water ratio in the oil-water mixture extracted from different regions is different, in this embodiment, the length of the first collecting cylinder 2 can be set to be greater than the length of the second collecting cylinder 3, so that the space above the liquid separation grid 4 is larger than the space below. The specific length of the first collecting cylinder 2 and the length of the second collecting cylinder 3 can be set according to actual conditions to ensure that even if the proportion of water in the extracted oil-water mixture is at the maximum proportion known from existing data, after the oil-water mixture fills the first collecting cylinder 2 and the second collecting cylinder 3, the aqueous solution can still completely fill the second collecting cylinder 3 and reach the position of the liquid separation grid 4;When the waist-shaped hole 41 of the liquid separation grid 4 is blocked by the blocking plate 42, the second collecting cylinder 3 is full of aqueous solution and precipitated impurities. At this time, the blocking column 53 located in the axial hole 52 can move downward. In this embodiment, the axial hole 52 is composed of a first straight segment 521, an expansion segment 522 and a second straight segment 523 from top to bottom. The diameter of the blocking column 53 is the same as the inner diameter of the first straight segment 521. Therefore, when the blocking column 53 is in the highest position, the first straight segment 521 is blocked. When the blocking column 53 moves down to the position of the expansion segment 522 or the second straight segment 523, a gap is generated between the inner wall of the axial hole 52 and the surrounding side of the blocking column 53. The aqueous solution in the second collecting cylinder 3 can flow through the axial hole 52 to the connecting pipe 54. The connecting pipe 54 connects the guide sleeve 121 and the liquid outlet pipe 122 on the base 12, so that the aqueous solution can be discharged from the liquid outlet pipe 122. The bottom end extends to the top of the liquid separation grid 4, so any amount of petroleum solution in the first collecting cylinder 2 can be discharged outward through the oil outlet pipe 22 to achieve oil-water separation, and the processes of oil and water separation will not affect each other, causing secondary mixing. In this embodiment, after the aqueous solution in the second collecting cylinder 3 is discharged, a large amount of impurities still remain on the surrounding side of the conical surface 51, and the movable base 5 can move downward along the axis of the second collecting cylinder 3. After the movable base 5 moves down a 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 conical surface 51 of the movable base 5, and fits with the surface of the conical 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 to scrape off impurities accumulated on the surface of the conical surface 51, and the scraped impurities fall into the collection box 16 with an opening upward. The second linear drive 15 in this embodiment 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 the fit with the conical surface 51. ;

[0034] In order to solve the problem of how to automatically make the blocking plate 42 block the waist-shaped hole 41 when the second collecting cylinder 3 rotates, the following features are specifically set:

[0035] The waist-shaped hole 41 extends in the radial direction of the liquid separation grid 4. A hinge column 43 is provided at one end of the waist-shaped hole 41 facing the axis of the liquid separation grid 4. The end of the blocking plate 42 facing the axis of the liquid separation grid 4 is rotatably mounted on the hinge column 43. The end of the blocking plate 42 away from the hinge column 43 is provided with a contact rod 421 extending vertically downward. The liquid separation 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. The elastic force of the elastic sheet 44 causes the blocking plate 4 2 rotates around the hinge column 43 to release the waist-shaped hole 41; a mounting ring 31 is coaxially mounted on the top of the second collecting cylinder 3, and the mounting ring 31 is provided with push plates 311 with the same number 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 separation 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 plates 42 are in contact with the positioning plates 411, the waist-shaped holes 41 are completely blocked.

[0036] When the second collecting cylinder 3 in this embodiment is driven to rotate by the rotating driver 11, the mounting ring 31 on the top of the second collecting cylinder 3 rotates synchronously with the second collecting cylinder 3, and 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 the positioning plate 411 on one side of the waist-shaped hole 41. At this time, the sealing plate 42 completely blocks the waist-shaped hole 41, isolating the solutions in the first collecting cylinder 2 and the second collecting cylinder 3. Then the second collecting cylinder 3 continues to rotate, and the sealing plate 42 is limited by the positioning plate 411 so that the liquid separation grid 4 rotates synchronously with the second collecting cylinder 3. During this process, the sealing plate 42 keeps the waist-shaped hole 41 blocked. When the second collecting cylinder 3 stops rotating, the sealing plate 42 rotates around the hinge column 43 to one side of the waist-shaped hole 41 under the elastic force of the elastic sheet 44, releasing the waist-shaped hole 41, so that the solution in the first collecting cylinder 2 can enter the second collecting cylinder 3 again.

[0037] In order to solve the problem of how to rotate the second collecting cylinder 3, the following features are specifically set:

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

[0039] The rotary driver 11 in this embodiment may be a servo motor, and the working end of the rotary driver 11 is connected to a transmission gear 111, and the gear 111 may be a bevel gear or the like. The gear 111 is directly meshed with the corresponding tooth groove 32 on the peripheral side of the second collecting barrel 3, so that the second collecting barrel 3 can be driven to rotate after the rotary driver 11 is started.

[0040] In order to solve the problem of how to make the blocking column 53 move in the shaft hole 52, the following features are specifically set:

[0041] A guide rod 531 extending vertically downward is provided at the bottom end of the blocking column 53. 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 movable plate 532. The movable plate 532 is slidably installed on the base 12 of the frame 1. The working end of the first linear drive 13 is fixedly connected to the movable plate 532. The working end of the first linear drive 13 is arranged to move in the vertical direction.

[0042] In this embodiment, the guide rod 531 at the bottom of the blocking 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 portion with the guide rod 531 to prevent water leakage. The working end of the first linear drive 13 is fixedly connected to the movable plate 532 set at one end of the guide rod 531. The first linear drive 13 drives the movable plate 532 to move and pull the blocking column 53 to move vertically inside the shaft hole 52. The first linear drive 13 can be a cylinder or an electric push rod, etc.

[0043] In order to solve the problem of how the first linear drive 13 drives the movable base 5 and the blocking column 53 to move synchronously, the following features are specifically set:

[0044] A limiting ring 533 is coaxially arranged on the blocking column 53, and the outer wall of the limiting ring 533 fits the inner wall of the second straight section 523; the upper end of the connecting tube 54 extends into the second straight section 523 of the axial hole 52, and when the blocking column 53 moves down to the limit ring 533 fits the top of the connecting tube 54, the blocking column 53 drives the movable base 5 to move down synchronously.

[0045] The connecting tube 54 in this embodiment extends to the inside of the second straight section 523 of the axial hole 52, and a limiting ring 533 is provided on the portion of the sealing column 53 located in the second straight section 523. The limiting ring 533 fits the inner wall of the second straight section 523 and cooperates with the sealing column 53 to fit the inner wall of the first straight section 521 to guide the movement of the sealing column 53, thereby ensuring that the sealing column 53 moves in the vertical direction. When the sealing column 53 moves down to the top of the connecting tube 54 where the limiting ring 533 of the sealing column 53 fits, the movable base 5 is pulled by the sealing column 53 and moves downward synchronously with the sealing column 53, so that the movable base 5 is separated from the bottom of the second collecting cylinder 3, thereby facilitating the side scraper 14 to be inserted into the gap between the second collecting cylinder 3 and the movable base 5 to clean the surface of the cone 51.

[0046] In order to solve the problem of how to keep the movable base 5 in contact with the bottom of the second collecting cylinder 3 without being affected by the pulling force of the blocking column 53, the following features are specifically provided:

[0047] A spring 123 is sleeved on the guide sleeve 121 , a swivel 124 is fixedly mounted on the top of the spring 123 , the spring 123 applies elastic force to the swivel 124 to move upward, and the swivel 124 is rotatably mounted on the bottom of the movable base 5 .

[0048] In this embodiment, the connecting tube 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 tube 54 moves in the guide sleeve 121, so as to keep the aqueous solution in the second collecting cylinder 3 flowing to the liquid outlet pipe 122 through the guide sleeve 121. The connecting tube 54 can also guide the movement of the movable base 5 in the guide sleeve 121. A dynamic seal is provided at the connection between the guide sleeve 121 and the connecting tube 54 to prevent water leakage. The spring 123 arranged outside the guide sleeve 121 is elastically connected to the swivel 124, and the swivel 124 is rotatably installed at the bottom of the movable base 5. Therefore, the movable base 5 can be subjected to the elastic force of the spring 123 to move upward, overcome the gravity of the aqueous solution in the second collecting cylinder 3 and maintain contact with the bottom of the second collecting cylinder 3, and the blocking column 53 can overcome the elastic force of the spring 123 when pulling the movable base 5 downward.

[0049] In order to solve the problem of how to ensure that the movable base 5 rotates along with the second collecting cylinder 3, the following features are specifically provided:

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

[0051] In this embodiment, a guide rod 33 is arranged in the second collecting cylinder 3 and is inserted into the connecting tube 54 of the movable base 5, so as to drive the movable base 5 to rotate 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 limiting head is arranged at the bottom end of the guide rod 33. When the movable base 5 moves down to the limit head, the movement of the movable base 5 is limited. 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 into the surface of the cone 51.

[0052] Due to the presence of the conical surface 51, part of the aqueous solution still remains on the bottom side of the second collecting cylinder 3 at a position lower than the upper opening of the shaft hole 52. In order to avoid a small amount of aqueous solution flowing out after the movable base 5 is separated from the bottom of the second collecting cylinder 3 and causing waste, the following features are specifically provided:

[0053] A plurality of filter holes 34 are arranged at the bottom of the second collecting cylinder 3, and the filter holes 34 are distributed at equal angles around the circumference of the second collecting cylinder 3. When the movable base 5 is in contact with the bottom of the second collecting cylinder 3, the circumference of the movable base 5 is in contact with the inner wall of the second collecting cylinder 3 to seal the filter holes 34; a collecting ring 17 surrounding the outside of the second collecting cylinder 3 is arranged on the frame 1, and the opening of the collecting ring 17 is in contact with 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 arranged on the collecting ring 17, and the water outlet branch pipe 171 is connected to the liquid outlet pipe 122.

[0054] In this embodiment, a plurality of filter holes 34 are further provided on the peripheral side of the bottom of the second collecting cylinder 3. Under normal conditions, the movable base 5 fits the bottom of the second collecting cylinder 3 and blocks the filter holes 34. After the aqueous solution in the second collecting cylinder 3 is discharged, part of the aqueous solution still remains in the impurities accumulated on the peripheral side of the bottom of the conical surface 51 of the movable base 5. At this time, the first linear drive 13 can drive the blocking column 53 to move down to fit the top of the connecting tube 54, and drive the movable base 5 to move down to the first position point. At this time, the movable base 5 keeps blocking the bottom opening of the second collecting cylinder 3, but releases the blocking of the filter holes 34. The aqueous solution can pass through the filter holes 34 into the collecting ring 17 surrounding the outside of the second collecting cylinder 3, and enter the liquid outlet pipe 122 through the water outlet branch pipe 171 on the collecting ring 17, thereby avoiding waste of the aqueous solution. The filter holes 34 can filter impurities to avoid impurities from entering the liquid outlet pipe 122. When the aqueous solution is completely discharged, the first linear drive 13 drives the blocking column 53 and the movable base 5 to continue to move down to fit the limit head of the movable base 5, reach the second position point, and start the impurity removal work.

[0055] Working principle: when in use, the sucked solution is introduced into the first collecting cylinder 2 and the second collecting cylinder 3 through the liquid inlet 21 at the top of the first collecting cylinder 2. The water and petroleum in the solution are separated by gravity, and the aqueous solution can flow through the waist-shaped hole 41 on the liquid separation grid 4 set between the first collecting cylinder 2 and the second collecting cylinder 3. Under normal conditions, the bottom of the second collecting cylinder 3 is blocked by the movable base 5, and the axial hole 52 at the axis of the movable base 5 is blocked by the blocking column 53. Impurities in the aqueous solution are accumulated on the side of the conical surface 51 of the movable base 5 under the action of gravity. When the water level of the aqueous solution in the first collecting cylinder 2 and the second collecting cylinder 3 exceeds the top of the liquid separation grid 4, the rotating driver 11 on the frame 1 can drive the second collecting cylinder 3 to rotate, and make the blocking plate 42 on the liquid separation grid 4 block the waist-shaped hole 41, so as to separate the petroleum solution and the aqueous solution in the first collecting cylinder 2 and the second collecting cylinder 3. The blocking column 53 located in the axial hole 52 moves down. The aqueous solution in the collecting cylinder 3 can flow into the connecting pipe 54 through the axial hole 52. The connecting pipe 54 connects the guide sleeve 121 and the liquid outlet pipe 122 on the base 12, so that the aqueous solution is discharged from the liquid outlet pipe 122, and the petroleum solution in the first collecting cylinder 2 is discharged outwardly through the oil outlet pipe 22 to achieve oil-water separation. After the water in the second collecting cylinder 3 is easily discharged, a large amount of impurities still remain on the surrounding side of the conical surface 51. The movable base 5 can move downward along the axis of the second collecting cylinder 3. After the movable base 5 moves down a 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 conical surface 51 of the movable base 5, and fits with the surface of the conical 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 a fixed position to scrape off the impurities accumulated on the surface of the conical surface 51, and the scraped impurities fall into the collection box 16 with an opening upward.

[0056] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

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

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

3. A multifunctional sampling device for easy oil-water separation according to claim 1, characterized in that: The second collecting cylinder (3) is provided with a tooth groove (32) surrounding the circumference of the outer wall, and the working end of the rotary driver (11) is connected to the gear (111) in a transmission manner, and the gear (111) is meshedly connected with the tooth groove (32).

4. A multifunctional sampling device for easy oil-water separation according to claim 1, characterized in that: A guide rod (531) extending vertically downward is provided at the bottom end of the blocking column (53), and 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 movable plate (532), and the movable plate (532) is slidably mounted on the base (12) of the frame (1). The working end of the first linear drive (13) is fixedly connected to the movable plate (532), and the working end of the first linear drive (13) is arranged to move in the vertical direction.

5. A multifunctional sampling device for easy oil-water separation according to claim 4, characterized in that: A limiting ring (533) is coaxially arranged on the blocking column (53), and the outer wall of the limiting ring (533) is in contact with the inner wall of the second straight line segment (523); The upper end of the connecting tube (54) extends into the second straight section (523) of the shaft hole (52), and when the blocking column (53) moves down to the limit ring (533) and fits the top of the connecting tube (54), the blocking column (53) drives the movable base (5) to move down synchronously.

6. A multifunctional sampling device for easy oil-water separation according to claim 5, characterized in that: The guide sleeve (121) is sleeved with a spring (123), a rotating ring (124) is fixedly mounted on the top of the spring (123), the spring (123) applies elastic force to move the rotating ring (124) upward, and the rotating ring (124) is rotatably mounted on the bottom of the movable base (5).

7. A multifunctional sampling device for easy oil-water separation according to claim 6, characterized in that: At least two guide rods (33) extending vertically downward are arranged in the second collecting cylinder (3), and the guide rods (33) 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) which 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).

8. The multifunctional sampling device for easy oil-water separation according to claim 1, characterized in that: A plurality of filter holes (34) are arranged at the bottom of the second collecting tube (3), and the filter holes (34) are distributed at equal angles around the circumference of the second collecting tube (3). When the movable base (5) is in contact with the bottom of the second collecting tube (3), the circumference of the movable base (5) is in contact with the inner wall of the second collecting tube (3) to seal the filter holes (34); A collecting ring (17) surrounding the outside of the second collecting tube (3) is arranged on the frame (1), the opening of the collecting ring (17) is in contact with the outer wall of the second collecting tube (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).

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