Oil and gas replacement type auxiliary sinking ball for cleaning oil-containing silt

Abstract

The invention relates to the technical field of oil-containing silt cleaning, and provides an oil-gas replacement type auxiliary sinking ball for oil-containing silt cleaning. Comprising a solid cladding, an inner oil and gas storage block filled in the solid cladding, an inner supporting pipe fixedly embedded in the center of the inner oil and gas storage block, a plurality of semi-embedded oil absorption blocks uniformly embedded in the periphery of the solid cladding, and a plurality of gas guide pipes penetrating through the solid cladding and the inner oil and gas storage block and arranged at intervals with the semi-embedded oil absorption blocks. In the first stage of lifting of the plug disc, the air end reverser is kept still under cooperation with the inner cylinder body, and air in the inner supporting pipe is filled into the air guide pipe and the twisting exhaust end point till saturation is achieved; and in the second stage of lifting of the plug disc, air in the inner supporting pipe is alternately exhausted through the separated exhaust pipe fittings, the loosening effect of the twisting exhaust endpoint on nearby silt is improved, and the problem that in the prior art, when the twisting air rod is inflated to be saturated, the twisting air rod keeps expanding and cannot twist is solved.

Description

Technical Field

[0001] The invention relates to the technical field of oil-containing mud and sand cleaning, and in particular to an oil-gas replacement type auxiliary sinker for oil-containing mud and sand cleaning. Background Art

[0002] Oily sludge is one of the main pollutants produced by petroleum and petrochemical enterprises during the oil extraction, storage, transportation and refining process. (The dry weight oil content is generally above 10%, and most can reach 20%-30%). It also contains high levels of other toxic and harmful substances such as organic matter and metal inorganic salts. Nowadays, ultrasonic cleaning is more preferred for the treatment of oily sludge. However, during the ultrasonic cleaning process, due to its own gravity, the density of the oily sludge at the bottom of the cleaning pool is greater than that at the top, resulting in poor cleaning effect at the bottom during the cleaning process. Compared with the whole, the cleaning of the oily sludge is uneven, resulting in the overall cleaning efficiency of the oily sludge.

[0003] After searching, the announcement number CN111570412B discloses an oil-gas replacement type auxiliary sinker for cleaning oil-containing silt. The auxiliary sinker includes a solid cladding, an inner oil-gas storage block is sleeved inside the solid cladding, and a multi-directional ventilation mechanism is embedded inside the solid cladding and the inner oil-gas storage block. The effect of rapid oil absorption can be achieved through the oil absorption difference, thereby achieving the effect of oil-sludge separation and reducing the difficulty of cleaning oil-containing silt. At the same time, after oil absorption, the oil will have a certain squeezing effect on the inert gas inside the inner oil-gas storage block, so that the inert gas enters the multi-directional ventilation mechanism and is discharged into the oil-containing silt through the multi-directional ventilation mechanism, thereby realizing the replacement of oil and gas, that is, it can achieve oil-sludge separation and store oil, which is convenient for later recovery and reuse. At the same time, with the effect of twisting the gas rod, the loosening effect of the inert gas on the nearby oil-containing silt can be expanded, and the porosity of the oil-containing silt near the sinker can be increased, thereby significantly improving the cleaning efficiency.

[0004] However, the above-mentioned auxiliary sinker still has the following problems: the auxiliary sinker is achieved by fixing multiple groups of alternatingly distributed twisting gas rods on the outer end of the twisting exhaust end point, the twisting gas rods include a hollow porous column connected to the twisting exhaust end point and a hollow porous ball connected to the end of the hollow porous column. When the multi-directional ventilation mechanism exhausts air outward, the twisting gas rods will produce a certain twisting under the impact force of the gas, which can assist the gas in loosening the nearby oil-containing mud and sand. However, when the twisting gas rods are inflated to saturation, the twisting gas rods remain expanded without twisting, which results in a relatively reduced loosening effect on the surrounding mud and sand, affecting the absorption efficiency of oil pollution in the mud and sand. Summary of the invention

[0005] The present invention provides an oil-gas replacement auxiliary sinker for cleaning oil-containing sediment, which solves the problem in the prior art that the twisting gas rod remains expanded without twisting when the twisting gas rod is inflated to saturation.

[0006] The technical scheme of the present invention is as follows: an oil-gas replacement auxiliary sinking ball for cleaning oil-containing sediment, comprising a solid cladding, an inner oil-gas storage block filled in the solid cladding, an inner support tube fixedly embedded in the center of the inner oil-gas storage block, a plurality of semi-embedded oil absorption blocks uniformly embedded in the periphery of the solid cladding, a plurality of air guide tubes penetrating the solid cladding and the inner oil-gas storage block and arranged alternately with the semi-embedded oil absorption blocks, and a twisting exhaust end point fixed to the outer end of the air guide tube, the end of the air guide tube close to the inner support tube is communicated with the inner cavity of the inner support tube, and the center position of the inner support tube is A floating rod is provided with two ends penetrating through the solid cladding, the floating rod is slidably arranged relative to the inner support tube, a plug disc is fixed to the middle of the floating rod and is slidably fitted to the inner wall of the inner support tube, a guide hole is provided at the bottom of the inner support tube and is communicated with the inner oil and gas storage block and is located below the plug disc, an inner cylinder is fixed to the inner side of the top of the inner support tube and is sleeved on the outside of the floating rod, an exhaust pipe fitting penetrating through the solid cladding, the inner oil and gas storage block and the semi-embedded oil absorption block is connected to the outside of the inner cylinder, and a plurality of external through holes arranged alternately with the exhaust pipe fitting are opened on the inner cylinder;

[0007] The floating rod includes a guide rod and a bracket fixed to the bottom of the guide rod, a guide groove is provided on the surface of the guide rod, and an air end diverter matched with the guide groove is provided between the inner cylinder and the guide rod. In the first stage of lifting, the plug disc remains stationary in cooperation with the air end diverter and the inner cylinder, and the air inside the inner support tube is filled into the air guide tube and the twisting exhaust end point until saturation is reached. In the second stage of lifting, the plug disc starts to rotate in cooperation with the air end diverter and the inner cylinder because the air inside the air guide tube and the twisting exhaust end point reaches saturation, and the air inside the inner support tube is alternately discharged through the exhaust pipe fittings separated from each other.

[0008] Preferably, the bracket is radially arranged around the guide rod, the vertical cross-section of the bracket is trapezoidal, and the upper surface of the bracket is a smooth curved surface.

[0009] Preferably, the guide groove comprises a strip groove segment and a spiral groove segment connected to the bottom of the strip groove segment, the strip groove segment is arranged in parallel along the length direction of the guide rod, and the spiral groove segment is arranged spirally along the length direction of the guide rod.

[0010] Preferably, the gas end diverter includes a ring, which is respectively loosely fitted with the inner cylinder and the guide rod and is rotatably connected to the inner cylinder through a bearing, a stop pin limitedly positioned in the guide groove is fixed on the inner ring wall of the ring, a plurality of air cavities are provided on the ring, and the number of air cavities is half the number of exhaust pipe fittings, a plurality of air inlet holes communicating with the inner cavity of the inner support tube are provided at the bottom of the ring, a plurality of inner through holes evenly distributed and correspondingly communicating with the air cavities are provided on the outer ring surface of the ring, the inner through holes are sequentially communicated with the outer through holes during rotation, and an elastic plug is provided in the air cavity for opening and closing the air inlet hole according to changes in the air pressure in the inner cavity of the inner support tube.

[0011] Preferably, the air cavity is a conical groove, and the diameter of the air cavity gradually decreases from top to bottom.

[0012] Preferably, the elastic plug includes a spring and a plug block, the plug block is matched with the bottom opening of the air cavity, one end of the spring abuts against the plug block, and the other end abuts against the top wall of the air cavity.

[0013] Preferably, the exhaust pipe fitting includes a first exhaust pipe and a second exhaust pipe, the first exhaust pipe passes through the solid cladding, the inner oil and gas storage block and the semi-embedded oil absorption block, one end of the first exhaust pipe is fixed to the inner cylinder and communicated with the external through hole, the other end of the first exhaust pipe is fixed to the second exhaust pipe and communicated with the second exhaust pipe, and the second exhaust pipe is fixedly embedded in the semi-embedded oil absorption block and leads to the outside of the semi-embedded oil absorption block.

[0014] Preferably, the second exhaust pipe is an arc-shaped curved pipe, and both ends thereof are respectively directed toward two adjacent twisted exhaust end points.

[0015] The beneficial effects of the present invention are:

[0016] In the present invention, the plug disc remains stationary in the first stage of lifting under the cooperation of the gas end reversing device and the inner cylinder, and the air inside the inner support tube is filled into the air guide tube and the twisting exhaust end point until saturation is reached. In the second stage of lifting, the plug disc starts to rotate under the cooperation of the gas end reversing device and the inner cylinder because the air inside the air guide tube and the twisting exhaust end point has reached saturation, and the air inside the inner support tube is alternately discharged through the spaced exhaust pipe fittings. On the one hand, the air blown out of the second exhaust pipe can further disturb the surrounding mud and sand to loosen the mud and sand, and on the other hand, the blown air can make the twisting exhaust end point deviate to one side. Since the number of air cavities is half of the number of exhaust pipe fittings, that is, the air is alternately discharged from the spaced exhaust pipe fittings during the rotation of the sleeve ring, the spaced twisting exhaust end points can be alternately swung, thereby greatly improving the loosening effect of the twisting exhaust end point on the nearby mud and sand, which is beneficial to the full absorption of oil stains in the mud and sand, and solves the problem in the prior art that the twisting air rod remains expanded without twisting when the air is inflated to saturation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of an oil-gas replacement type auxiliary sinker for cleaning oil-containing sediment proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of an oil-gas replacement type auxiliary sinker for cleaning oil-containing sediment proposed by the present invention from another perspective;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of an oil-gas replacement type auxiliary sinker for cleaning oil-containing sediment proposed by the present invention;

[0021] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the floating rod proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the floating rod and the exhaust pipe provided by the present invention;

[0024] Figure 7 This is a schematic diagram of a half-section three-dimensional structure of the gas end commutator proposed by the present invention;

[0025] In the figure: 1, solid cladding; 2, inner oil and gas storage block; 3, semi-embedded oil suction block; 4, twisting exhaust end point; 5, air guide pipe; 6, inner support pipe; 61, inner cylinder; 611, outer through hole; 62, guide hole; 7, floating rod; 71, guide rod; 72, bracket; 73, guide groove; 731, strip groove section; 732, spiral groove section; 8, plug plate; 9, gas end commutator; 91, collar; 92, air cavity; 93, spring; 94, plug block; 95, air inlet hole; 96, inner through hole; 97, stop pin; 10, exhaust pipe fittings; 101, first exhaust pipe; 102, second exhaust pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 , Figure 2 and Figure 3The present invention provides a technical solution: an oil-gas replacement auxiliary sinking ball for cleaning oil-containing sediment, comprising a solid cladding 1, an inner oil-gas storage block 2 filled in the solid cladding 1, an inner support tube 6 fixedly embedded at the center of the inner oil-gas storage block 2, a plurality of semi-embedded oil absorption blocks 3 uniformly embedded in the outer periphery of the solid cladding 1, a plurality of air guide pipes 5 penetrating the solid cladding 1 and the inner oil-gas storage block 2 and alternately arranged with the semi-embedded oil absorption blocks 3, and a twisting exhaust terminal 4 fixed to the outer end of the air guide pipe 5. The structural composition of the solid cladding 1, the oil-gas storage block 2, the semi-embedded oil absorption block 3, the twisting exhaust terminal 4 and the air guide pipe 5 can refer to the cited patent According to the document, one end of the air guide pipe 5 close to the inner support pipe 6 is communicated with the inner cavity of the inner support pipe 6, and a floating rod 7 with both ends penetrating the solid cladding 1 is provided at the center of the inner support pipe 6. The floating rod 7 is slidably arranged relative to the inner support pipe 6, and a plug disc 8 is fixed to the middle of the floating rod 7, which is slidably fitted to the inner wall of the inner support pipe 6. A guide hole 62 is provided at the bottom of the inner support pipe 6, which is communicated with the inner oil and gas storage block 2 and is located below the plug disc 8. An inner cylinder 61 is fixed to the inner side of the top of the inner support pipe 6, which is sleeved on the outside of the floating rod 7. The outside of the inner cylinder 61 is connected to an exhaust pipe 10 penetrating the solid cladding 1, the inner oil and gas storage block 2 and the semi-embedded oil absorption block 3. Figure 4 As shown, the inner cylinder 61 is provided with a plurality of outer through holes 611 arranged alternately with the exhaust pipe 10 .

[0028] See also Figure 3 , Figure 5 and Figure 6 The floating rod 7 includes a guide rod 71 and a bracket 72 fixed to the bottom of the guide rod 71. A guide groove 73 is provided on the surface of the guide rod 71. An air end diverter 9 matched with the guide groove 73 is provided between the inner cylinder 61 and the guide rod 71. In the first stage of lifting, the plug disc 8 remains stationary under the cooperation of the air end diverter 9 and the inner cylinder 61, and the air inside the inner support tube 6 is filled into the air guide tube 5 and the twisting exhaust end point 4 until saturation is reached. In the second stage of lifting, the plug disc 8 starts to rotate under the cooperation of the air end diverter 9 and the inner cylinder 61 because the air inside the air guide tube 5 and the twisting exhaust end point 4 reaches saturation, and the air inside the inner support tube 6 is alternately discharged through the exhaust pipe 10 separated by intervals.

[0029] See also Figure 6The bracket 72 is radially arranged around the guide rod 71. The vertical cross-section of the bracket 72 is trapezoidal. The upper surface of the bracket 72 is a smooth cambered surface. The M-shaped distribution of the bracket 72 is convenient for sinking into the mud and sand in the oil pool and plays a supporting role at the same time. The trapezoidal cross-section of the bracket 72 can increase the torque resistance so that the floating rod 7 can maintain a certain direction in the oil pool and not rotate. The guide groove 73 includes a strip groove section 731 and a spiral groove section 732 connected to the bottom of the strip groove section 731. The strip groove section 731 is arranged parallel to the length direction of the guide rod 71, and the spiral groove section 732 is spirally arranged along the length direction of the guide rod 71. In the first stage, the stop pin 97 on the inner wall of the collar 91 is arranged along As the strip groove section 731 slides downward and the collar 91 remains stationary, the plug disc 8 slides upward relative to the inner support tube 6 to compress the air inside the inner support tube 6, generating negative pressure below the plug disc 8, and the oil and water in the mud and sand are sucked into the inner oil and gas storage block 2 through the semi-embedded oil absorption block 3, while the air above the plug disc 8 is compressed and filled into the air guide pipe 5 and the twisting exhaust terminal 4 until the internal air pressure of the air guide pipe 5 and the twisting exhaust terminal 4 reaches saturation. At this time, the stop pin 97 on the inner wall of the collar 91 just slides from the strip groove section 731 into the spiral groove section 732, and the second stage begins. Under the spiral guidance of the spiral groove section 732, the collar 91 begins to rotate between the guide rod 71 and the inner cylinder 61.

[0030] See also Figure 4 and Figure 7 The gas end reversing device 9 includes a collar 91, which is respectively fitted with the inner cylinder 61 and the guide rod 71 in a clearance and is rotatably connected to the inner cylinder 61 through a bearing. A stop pin 97 limitedly located in the guide groove 73 is fixed on the inner ring wall of the collar 91. A plurality of air cavities 92 are provided on the collar 91, and the number of air cavities 92 is half of the number of the exhaust pipe 10. The air cavity 92 is a conical groove, and the diameter of the air cavity 92 gradually decreases from top to bottom. A plurality of air inlet holes 95 for connecting the air cavity 92 with the inner cavity of the inner support tube 6 are provided at the bottom of the collar 91. A plurality of inner through holes 96 evenly distributed and correspondingly connected to the air cavity 92 are provided on the outer ring surface of the collar 91. The inner through holes 96 are connected with the outer through holes during rotation. The holes 611 are connected in sequence, and an elastic plug is provided in the air cavity 92 for opening and closing the air inlet hole 95 according to the change of the air pressure in the inner cavity of the inner support tube 6. The elastic plug includes a spring 93 and a plug block 94. The plug block 94 is adapted to the bottom of the air cavity 92. One end of the spring 93 abuts against the plug block 94, and the other end abuts against the top wall of the air cavity 92. In the first stage, due to the existence of the spring 93, the plug block 94 closes the air inlet hole 95 and seals the air cavity 92. When the second stage begins, the pressure on the spring 93 increases and begins to be in a compressed state. The plug block 94 opens the air inlet hole 95, so that the air in the inner support tube 6 begins to enter the air cavity 92 from the air inlet hole 95 and then from the air cavity 92 to the inner through hole 96.

[0031] See also Figure 3 and Figure 4The exhaust pipe 10 includes a first exhaust pipe 101 and a second exhaust pipe 102. The first exhaust pipe 101 penetrates the solid cladding 1, the inner oil and gas storage block 2 and the semi-embedded oil absorption block 3. One end of the first exhaust pipe 101 is fixed to the inner cylinder 61 and communicates with the outer through hole 611. The other end of the first exhaust pipe 101 is fixed to the second exhaust pipe 102 and communicates with the second exhaust pipe 102. The second exhaust pipe 102 is fixedly embedded in the semi-embedded oil absorption block 3 and leads to the outside of the semi-embedded oil absorption block 3. The second exhaust pipe 102 is an arc-shaped curved pipe, and the two ends are respectively directed toward two adjacent twisted exhaust pipes. End point 4, when the inner through hole 96 rotates to be aligned with the outer through hole 611 on the inner cylinder 61, the compressed air is discharged to the second exhaust pipe 102 through the first exhaust pipe 101, and is blown to the twisting exhaust end point 4 from the two ends of the second exhaust pipe 102. On the one hand, the air blown out from the second exhaust pipe 102 can further disturb the surrounding mud and sand to loosen the mud and sand, and on the other hand, the blown air can make the twisting exhaust end point 4 deviate to one side. Since the number of air cavities 92 is half the number of exhaust pipe fittings 10, that is, during the rotation of the sleeve ring 91, the air is discharged alternately from the separated exhaust pipe fittings 10.

[0032] The working principle and use process of the present invention are as follows: when the device is placed in the oil pool, the bracket 72 gradually sinks into the mud and sand at the bottom of the pool until it contacts the bottom of the pool. Under the support of the bracket 72, the solid envelope 1 of the device begins to sink with its own weight. In the first stage, the stopper pin 97 on the inner wall of the collar 91 slides downward along the strip groove section 731, while the collar 91 remains stationary. The plug disc 8 slides upward relative to the inner support tube 6 to compress the air inside the inner support tube 6, generating negative pressure below the plug disc 8, and the oil and water in the mud and sand are sucked into the inner oil and gas storage block 2 through the semi-embedded oil absorption block 3, while the air above the plug disc 8 is compressed and filled into the air guide pipe 5 and the twisting exhaust terminal 4 until the air pressure inside the air guide pipe 5 and the twisting exhaust terminal 4 reaches saturation. The air guide pipe 5 and the twisting exhaust terminal 4 will produce a certain twist under the impact force of the gas during the inflation process, thereby playing a loosening role for the nearby oil-containing mud and sand, so as to facilitate the absorption of oil pollution in the mud and sand;

[0033] When the air pressure inside the air guide pipe 5 and the twisting exhaust end point 4 reaches saturation, the stop pin 97 on the inner wall of the collar 91 just slides from the strip groove section 731 into the spiral groove section 732, and the second stage begins. Under the spiral guidance of the spiral groove section 732, the collar 91 begins to rotate between the guide rod 71 and the inner cylinder 61. In the first stage, due to the existence of the spring 93, the plug 94 closes the air inlet hole 95 and the air cavity 92 is sealed. When the second stage begins, the pressure on the spring 93 increases and begins to be in a compressed state. The plug 94 opens the air inlet hole 95, so that the air in the inner support tube 6 begins to enter the air cavity 92 from the air inlet hole 95 and then from the air cavity 92 to the inner through hole 96. When the inner through hole 96 rotates to the same When the outer through holes 611 on the inner cylinder 61 are aligned, the compressed air is discharged to the second exhaust pipe 102 through the first exhaust pipe 101, and is blown to the twisting exhaust terminal 4 from the two ends of the second exhaust pipe 102. On the one hand, the air blown out from the second exhaust pipe 102 can further disturb the surrounding mud and sand to loosen the mud and sand, and on the other hand, the blown air can make the twisting exhaust terminal 4 deviate to one side. Since the number of air cavities 92 is half the number of exhaust pipe fittings 10, that is, during the rotation of the ring 91, the air is alternately discharged from the spaced exhaust pipe fittings 10, which can make the spaced twisting exhaust terminal 4 swing alternately, thereby greatly improving the loosening effect of the twisting exhaust terminal 4 on the nearby mud and sand, which is beneficial to the full absorption of oil pollution in the mud and sand.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil-gas replacement type auxiliary sinker for cleaning oil-containing sediment, comprising a solid cladding (1), an inner oil-gas storage block (2) filled in the solid cladding (1), an inner support tube (6) fixedly embedded at the center of the inner oil-gas storage block (2), a plurality of semi-embedded oil absorption blocks (3) uniformly embedded at the periphery of the solid cladding (1), a plurality of air guide pipes (5) penetrating the solid cladding (1) and the inner oil-gas storage block (2) and arranged alternately with the semi-embedded oil absorption blocks (3), and a twisting exhaust terminal (4) fixed at the outer end of the air guide pipe (5), characterized in that: One end of the air guide tube (5) close to the inner support tube (6) is communicated with the inner cavity of the inner support tube (6); a floating rod (7) with both ends penetrating the solid cladding (1) is provided at the center of the inner support tube (6); the floating rod (7) is slidably arranged relative to the inner support tube (6); a plug disc (8) slidably fitted to the inner wall of the inner support tube (6) is fixed in the middle of the floating rod (7); and a plug disc (8) is provided at the bottom of the inner support tube (6) to be in contact with the inner oil and gas storage block (2). A guide hole (62) is connected to and located below the plug disc (8); an inner cylinder (61) sleeved on the outside of the floating rod (7) is fixed on the inner side of the top of the inner support tube (6); the inner cylinder (61) is externally connected to an exhaust pipe (10) that penetrates the solid cladding (1), the inner oil and gas storage block (2) and the semi-embedded oil absorption block (3); and a plurality of external through holes (611) arranged alternately with the exhaust pipe (10) are opened on the inner cylinder (61); The floating rod (7) comprises a guide rod (71) and a bracket (72) fixed to the bottom of the guide rod (71); a guide groove (73) is provided on the surface of the guide rod (71); an air end diverter (9) matched with the guide groove (73) is provided between the inner cylinder (61) and the guide rod (71); in the first stage of lifting, the plug disc (8) remains stationary in cooperation with the air end diverter (9) and the inner cylinder (61); the air inside the inner support tube (6) is filled into the air guide tube (5) and the twisting exhaust end point (4) until saturation is reached; in the second stage of lifting, the plug disc (8) starts to rotate in cooperation with the air end diverter (9) and the inner cylinder (61) because the air inside the air guide tube (5) and the twisting exhaust end point (4) reaches saturation, and the air inside the inner support tube (6) is alternately discharged through the separated exhaust pipes (10).

2. The oil-gas replacement auxiliary sinker for cleaning oil-containing sediment according to claim 1 is characterized in that: The bracket (72) is radially arranged around the guide rod (71), the vertical cross-section of the bracket (72) is trapezoidal, and the upper surface of the bracket (72) is a smooth curved surface.

3. The oil-gas replacement auxiliary sinker for cleaning oil-containing sediment according to claim 1 is characterized in that: The guide groove (73) comprises a strip groove section (731) and a spiral groove section (732) connected to the bottom of the strip groove section (731); the strip groove section (731) is arranged parallel to the length direction of the guide rod (71); and the spiral groove section (732) is arranged spirally along the length direction of the guide rod (71).

4. The oil-gas replacement auxiliary sinker for cleaning oil-containing sediment according to claim 1 is characterized in that: The gas end reversing device (9) comprises a sleeve (91), the sleeve (91) is respectively fitted with the inner cylinder (61) and the guide rod (71) in a clearance manner and is rotatably connected to the inner cylinder (61) via a bearing, a stop pin (97) limitedly located in the guide groove (73) is fixed on the inner ring wall of the sleeve (91), a plurality of air cavities (92) are formed on the sleeve (91), and the number of the air cavities (92) is half the number of the exhaust pipe (10), and the sleeve The bottom of the sleeve (91) is provided with a plurality of air inlet holes (95) for communicating the air cavity (92) with the inner cavity of the inner support tube (6); the outer ring surface of the sleeve (91) is provided with a plurality of inner through holes (96) evenly distributed and correspondingly communicating with the air cavity (92); the inner through holes (96) are sequentially communicated with the outer through holes (611) during rotation; and an elastic plug is provided in the air cavity (92) for opening and closing the air inlet holes (95) according to changes in the air pressure in the inner cavity of the inner support tube (6).

5. The oil-gas replacement auxiliary sinker for cleaning oil-containing sediment according to claim 4 is characterized in that: The air cavity (92) is a conical groove, and the diameter of the air cavity (92) gradually decreases from top to bottom.

6. The oil-gas replacement auxiliary sinker for cleaning oil-containing sediment according to claim 4 is characterized in that: The elastic plug includes a spring (93) and a plug block (94). The plug block (94) is adapted to the bottom of the air cavity (92). One end of the spring (93) abuts against the plug block (94), while the other end abuts against the top wall of the air cavity (92).

7. The oil-gas replacement auxiliary sinker for cleaning oil-containing sediment according to claim 1 is characterized in that: The exhaust pipe member (10) comprises a first exhaust pipe (101) and a second exhaust pipe (102); the first exhaust pipe (101) penetrates the solid cladding (1), the inner oil and gas storage block (2) and the semi-embedded oil absorption block (3); one end of the first exhaust pipe (101) is fixed to the inner cylinder (61) and communicates with the outer through hole (611); the other end of the first exhaust pipe (101) is fixed to the second exhaust pipe (102) and communicates with the second exhaust pipe (102); the second exhaust pipe (102) is fixedly embedded in the semi-embedded oil absorption block (3) and leads to the outside of the semi-embedded oil absorption block (3).

8. The oil-gas replacement type auxiliary sinker for cleaning oil-containing sediment according to claim 7 is characterized in that: The second exhaust pipe (102) is an arc-shaped curved pipe, and its two ends are respectively directed toward two adjacent twisted exhaust end points (4).

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