Anti-splashing device for well drilling and using method of anti-splashing device

Abstract

The invention relates to the technical field of anti-splashing devices, and provides an anti-splashing device for well drilling and a using method thereof.The anti-splashing device for well drilling comprises a shell, a cavity is formed in the shell, a liquid inlet is formed in one end of the shell, a liquid guide hose is connected to the interior of the shell in a penetrating mode, and a flow control structure is connected between the liquid guide hose and the inner wall of the shell; a filtering structure is arranged at the lower end of the shell corresponding to the inner side of the liquid inlet; the flow control structure comprises a sliding groove formed in the surface of the inner wall of the shell, a sliding column is arranged in a cavity of the shell, the two ends of the sliding column are fixedly connected with sliding blocks, an electric cylinder is connected between the sliding column and the inner wall of the shell, a jacking assembly is arranged on the outer surface of one side of the sliding column, and a sealing assembly is arranged on the outer surface of the liquid guide hose and corresponds to the sliding column. By means of the technical scheme, the problems that an existing anti-splashing device is not provided with a flow control structure, liquid in a well splashes very easily, meanwhile, the flowing caliber of the liquid cannot be adjusted, and the coal seam drilling production process is not facilitated are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of splash prevention devices, and in particular to a splash prevention device for drilling and a method of using the same. Background Art

[0002] Sometimes, during the drilling process, liquids such as water or liquid raw materials may be drilled. Without protective measures, the liquids will directly splash to the outside through structures such as pipelines, which is not conducive to the drilling construction of coal seams.

[0003] After searching, the authorization announcement number is CN111271018B, which is a method for preventing drilling fluid splashing. The method for preventing drilling fluid splashing in the application is to place the oil pipe coupling in the anti-splashing device and block it, and lock and fix it at the same time, thereby changing the traditional method of screwing a plug into the inside of the oil pipe coupling to block it from the outside of the oil pipe coupling, which is more convenient to operate and more efficient to block.

[0004] However, the above-mentioned existing anti-splashing device has no structure to control the flow rate, which can easily cause splashing of the liquid in the well. At the same time, it is impossible to adjust the caliber of the liquid flow, which is not conducive to the production process of coal seam drilling. Therefore, we propose a drilling anti-splashing device and a method of using the same. Summary of the invention

[0005] The present invention proposes a splash-proof device for drilling and a method of using the same, which solves the problem mentioned in the background technology that the existing splash-proof device has no structure to control the flow rate, which easily causes splashing of liquid in the well, and at the same time cannot adjust the caliber of liquid flow, which is not conducive to the coal seam drilling production process.

[0006] The technical solution of the present invention is as follows:

[0007] A splash prevention device for drilling, comprising a shell, a cavity is provided inside the shell, a liquid inlet is provided at one end of the shell, a liquid guide hose is connected through the inside of the shell, a flow control structure is connected between the liquid guide hose and the inner wall of the shell, and a filtering structure is provided on the inner side of the lower end of the shell corresponding to the liquid inlet;

[0008] The flow control structure includes a slide groove opened on the inner wall surface of the shell, a sliding column is arranged inside the cavity of the shell, sliding blocks are fixedly connected at both ends of the sliding column, an electric cylinder is connected between the sliding column and the inner wall of the shell, a pushing assembly is arranged on the outer surface of one side of the sliding column, a sealing assembly is arranged on the outer surface of the liquid guiding hose corresponding to the sliding column, the pushing assembly is used to push the closing of the corresponding position on the surface of the liquid guiding hose, and the sealing assembly is used to protect the liquid guiding hose and enhance the sealing of the liquid guiding hose after closing.

[0009] As a further technical solution of the present invention, the liquid inlet is a conical opening, and the upper end of the liquid inlet is connected to the lower end of the liquid guiding hose, the filtering structure includes an inward-recessed groove opened on the inner side of the lower end of the outer shell, a vibration spring is arranged inside the inward-recessed groove, the lower end of the vibration spring is connected to a filter screen, a rotating assembly is arranged on the inner side of the lower end of the outer shell near the upper end of the liquid inlet, a vibration assembly is arranged between the rotating assembly and the filter screen, the rotating assembly is used to rotate under the flow of liquid, and the vibration assembly is used to cooperate with the rotating assembly to generate vibration and transmit it to the filter screen.

[0010] As a further technical solution of the present invention, the pushing assembly includes a recessed groove opened on one side surface of the sliding column, a pushing spring is connected to the inner side of the sliding column corresponding to the inside of the recessed groove, one end of the pushing spring is connected to a pushing plate, and the sealing assembly includes a sheath fixedly connected to the outer surface of the liquid guiding hose, and the inner wall surface of the liquid guiding hose is respectively fixedly connected to a No. 1 closing strip and a No. 2 closing strip.

[0011] As a further technical solution of the present invention, the rotating assembly includes a fixed seat fixedly connected to the inner surface of the shell near the upper end of the liquid inlet, the outer surface of the fixed seat is rotatably connected to a rotating shaft, and the surface of the rotating shaft is fixedly connected to a blade, the vibration assembly includes a sleeve fixedly connected to the upper end of the filter screen, the inner side of the sleeve is slidably connected to a movable column, the lower end of the movable column is fixedly connected to a top moving head, a plate body is fixedly connected between the sleeve and the filter screen, a connecting spring is connected between the lower end of the movable column and the plate body, the axis of the sleeve is fixedly connected to a fixing rod through the plate body, the top end of the fixing rod is fixedly connected to an end plate, the outer surface of the movable column is fixedly connected to a liquid baffle plate, a sliding groove is provided on the inner side of the sleeve, the upper end inner side of the sleeve is fixedly connected to a limiting ring, and the outer surface of the movable column is fixedly connected to an anti-slip ring near the lower end.

[0012] As a further technical solution of the present invention, one end of the shell is fixedly connected to a fixing ring through a bracket, the outer surface of the fixing ring is fixedly connected to a lifting ear, and the upper end of the liquid guiding hose is fixedly connected to a connecting pipe.

[0013] As a further technical solution of the present invention, the slider slides along the length direction of the slide groove, and a group of sliding columns corresponds to two groups of sliders, electric cylinders and slide grooves. The end of the electric cylinder away from the output is fixedly connected to the inner wall of the outer shell, and the output end of the electric cylinder is fixedly connected to the sliding column. The closure of the channel in the liquid guiding hose is achieved by squeezing two groups of symmetrical sliding columns close to each other.

[0014] As a further technical solution of the present invention, the number of the sunken grooves is several groups and distributed in a ring array, the upper and lower elastic ends of the vibration spring are fixedly connected to the outer shell and the filter screen respectively, the diameter of the filter screen is smaller than the maximum diameter of the lower end of the liquid inlet by 1cm-2cm, and the large impurities in the drilling leakage are filtered through the filter screen.

[0015] As a further technical solution of the present invention, the push spring is arranged horizontally, and the elastic ends of the push spring are fixedly connected to the sliding column and the push plate respectively. The push plate and the sliding column are slidably connected, and the closing of the liquid guiding hose is achieved by squeezing the sheath by the push plate. One group of No. 2 closing strips corresponds to two groups of No. 1 closing strips, and the spacing between the two groups of No. 1 closing strips matches the corresponding No. 2 closing strips. The No. 2 closing strip is a rubber composite material.

[0016] As a further technical solution of the present invention, the rotating shaft forms a rotational connection with the fixed seat through the bearing, and the liquid flows into the liquid guide hose from the liquid inlet to provide power for the rotation of the blades. The liquid impacts the liquid baffle plate to realize the upward movement of the liquid baffle plate and the movable column for a certain distance. The maximum distance of the movable column moving upward and downward is limited by the anti-slip ring and the limit ring, and the vibration of the end plate, the fixed rod and the filter screen is realized by the impact of the push head on the push head.

[0017] The present invention also includes a method for using the splash prevention device for drilling, and the method includes the following steps:

[0018] Normal use: The liquid in the well flows in from the liquid inlet at the lower end of the shell, is filtered by the filter structure, and then enters the lower end of the liquid guide hose. The liquid finally flows into the connecting pipe through the liquid guide hose, and is collected through the connecting pipe and processed in subsequent links. During the whole process, the shell is stabilized by the connection of the lifting lugs;

[0019] The anti-splashing function is enabled: In this link, the flow of the liquid in the liquid guiding hose needs to be controlled. The pushing assembly on the surface of the sliding column is pushed by the electric cylinder to clamp the corresponding part of the liquid guiding hose, thereby controlling the flow of the liquid in the liquid guiding hose. At the same time, according to the adjustment of the distance between the two sets of sliding columns, the flow in the liquid guiding hose can be controlled, and even blocked and closed to prevent the liquid in the well from splashing out to the outside, thereby achieving the effect of regulation.

[0020] The working principle and beneficial effects of the present invention are:

[0021] Through the function of the flow control structure in the present invention, the size of the outflow flow can be effectively controlled according to the actual usage requirements of the user, thereby achieving a good anti-splashing effect and preventing splashing. At the same time, the opening inside the entire liquid-guiding hose can be blocked, and the flow rate of the liquid outflowing from the liquid-guiding hose can be adjusted according to the needs of the user, thereby preventing the risk of splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure from another perspective;

[0025] Figure 3 For the present invention Figure 1 A schematic diagram of a local structure cut away from another perspective;

[0026] Figure 4 For the present invention Figure 3 The local structure of the large picture;

[0027] Figure 5 It is a schematic diagram of a partial structure of a jacking assembly cut away in the present invention;

[0028] Figure 6 It is a schematic diagram of a partial structure of the filter structure of the present invention;

[0029] Figure 7 For the present invention Figure 6 The local structure of the large picture;

[0030] Figure 8 This is a partial enlarged view of the vibrating component of the present invention;

[0031] Fig. 9 For the present invention Figure 8 Local defense map.

[0032] In the figure: 1, housing; 2, cavity; 3, liquid inlet; 4, liquid guide hose; 5, flow control structure; 51, slide groove; 52, sliding column; 53, slider; 54, electric cylinder; 55, push assembly; 551, recessed groove; 552, push spring; 553, push plate; 56, sealing assembly; 561, sheath; 562, No. 1 closing strip; 563, No. 2 closing strip; 6, filtering structure; 61, inner recessed groove; 62, vibration Dynamic spring; 63, filter screen; 64, rotating assembly; 641, fixed seat; 642, rotating shaft; 643, blades; 65, vibration assembly; 651, sleeve; 652, movable column; 653, top moving head; 654, connecting spring; 655, fixing rod; 656, end plate; 657, liquid baffle plate; 658, sliding groove; 659, limiting ring; 650, anti-slip ring; 7, fixing ring; 8, lifting ear; 9, connecting pipe. DETAILED DESCRIPTION

[0033] 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.

[0034] Example 1

[0035] like Figure 1 to Figure 6 As shown, this embodiment proposes a splash prevention device for drilling, including a shell 1, a cavity 2 is opened inside the shell 1, a liquid inlet 3 is opened at one end of the shell 1, a liquid guiding hose 4 is connected through the inside of the shell 1, a flow control structure 5 is connected between the liquid guiding hose 4 and the inner wall of the shell 1, and a filtering structure 6 is arranged on the inner side of the liquid inlet 3 at the lower end of the shell 1; a fixing ring 7 is fixedly connected to one end of the shell 1 through a bracket, a lifting ear 8 is fixedly connected to the outer surface of the fixing ring 7, and a connecting pipe 9 is fixedly connected to the upper end of the liquid guiding hose 4.

[0036] The flow control structure 5 includes a slide groove 51 opened on the inner wall surface of the shell 1, a sliding column 52 is arranged inside the cavity 2 of the shell 1, and sliders 53 are fixedly connected to both ends of the sliding column 52. An electric cylinder 54 is connected between the sliding column 52 and the inner wall of the shell 1. A pushing component 55 is arranged on the outer surface of one side of the sliding column 52, and a sealing component 56 is arranged on the outer surface of the liquid guiding hose 4 corresponding to the sliding column 52. The pushing component 55 is used to push the closing of the corresponding position on the surface of the liquid guiding hose 4, and the sealing component 56 is used to protect the liquid guiding hose 4 and enhance the sealing of the liquid guiding hose 4 after closing.

[0037] The pushing assembly 55 includes a recessed groove 551 opened on one side surface of the sliding column 52, and a pushing spring 552 is connected to the inside of the recessed groove 551 corresponding to the inner side of the sliding column 52, and one end of the pushing spring 552 is connected to a pushing plate 553. The sealing assembly 56 includes a sheath 561 fixedly connected to the outer surface of the liquid guiding hose 4, and the inner wall surface of the liquid guiding hose 4 is respectively fixedly connected to a No. 1 closing strip 562 and a No. 2 closing strip 563.

[0038] The slider 53 slides along the length direction of the slide groove 51. A set of sliding columns 52 corresponds to two sets of sliders 53, electric cylinders 54 and slide grooves 51. The end of the electric cylinder 54 away from the output is fixedly connected to the inner wall of the shell 1. The output end of the electric cylinder 54 is fixedly connected to the sliding column 52. The closure of the channel in the liquid guiding hose 4 is achieved by squeezing the two sets of symmetrical sliding columns 52 close to each other.

[0039] The push spring 552 is arranged horizontally, and the elastic ends of the push spring 552 are fixedly connected to the sliding column 52 and the push plate 553 respectively. The push plate 553 and the sliding column 52 are slidably connected. The push plate 553 squeezes the sheath 561 to achieve the closure of the liquid guiding hose 4. A group of No. 2 closing strips 563 corresponds to two groups of No. 1 closing strips 562, and the spacing between the two groups of No. 1 closing strips 562 matches the corresponding No. 2 closing strips 563. The No. 2 closing strip 563 is a rubber composite material.

[0040] In this embodiment, the size of the outflow flow rate can be effectively controlled according to the actual usage needs of the user, thereby achieving a good anti-splashing effect and preventing splashing. At the same time, the opening inside the entire liquid-conducting hose 4 can be blocked, and the flow rate of the liquid outflowing from the liquid-conducting hose 4 can be adjusted according to the needs of the user, thereby preventing the risk of splashing.

[0041] Example 2

[0042] like Figure 7 to Figure 9 As shown, on the basis of Example 1, it is further proposed that the liquid inlet 3 is a conical opening, and the upper end of the liquid inlet 3 is connected to the lower end of the liquid guiding hose 4, the filtering structure 6 includes an inner recessed groove 61 opened on the inner side of the lower end of the outer shell 1, and a vibration spring 62 is arranged inside the inner recessed groove 61, and the lower end of the vibration spring 62 is connected to a filter screen 63, and a rotating component 64 is arranged on the inner side of the lower end of the outer shell 1 near the upper end of the liquid inlet 3, and a vibration component 65 is arranged between the rotating component 64 and the filter screen 63, the rotating component 64 is used to rotate under the flow of liquid, and the vibration component 65 is used to cooperate with the rotating component 64 to generate vibration and transmit it to the filter screen 63.

[0043] The rotating assembly 64 includes a fixed seat 641 fixedly connected to the inner surface of the housing 1 near the upper end of the liquid inlet 3, the outer surface of the fixed seat 641 is rotatably connected to a rotating shaft 642, and the surface of the rotating shaft 642 is fixedly connected to a blade 643. The vibration assembly 65 includes a sleeve 651 fixedly connected to the upper end of the filter screen 63, the inner side of the sleeve 651 is slidably connected to a movable column 652, the lower end of the movable column 652 is fixedly connected to a push head 653, and the sleeve 651 is fixedly connected to the filter screen 63. There is a plate body, a connecting spring 654 is connected between the lower end of the movable column 652 and the plate body, the axis of the sleeve 651 is fixedly connected to the fixed rod 655 through the plate body, the top of the fixed rod 655 is fixedly connected to the end plate 656, the outer surface of the movable column 652 is fixedly connected to the liquid blocking plate 657, the inner side of the sleeve 651 is provided with a sliding groove 658, the inner side of the upper end of the sleeve 651 is fixedly connected to a limiting ring 659, and the outer surface of the movable column 652 is fixedly connected to an anti-slip ring 650 near the lower end.

[0044] The number of the sunken grooves 61 is several groups and they are distributed in a ring array. The upper and lower elastic ends of the vibration spring 62 are fixedly connected to the outer shell 1 and the filter screen 63 respectively. The diameter of the filter screen 63 is smaller than the maximum diameter of the lower end of the liquid inlet 3 by 1cm-2cm. The large impurities in the drilling leakage are filtered through the filter screen 63.

[0045] The rotating shaft 642 is rotatably connected with the fixed seat 641 through the bearing, and the liquid flows from the liquid inlet 3 into the liquid guiding hose 4 to provide power for the rotation of the blade 643. The liquid impacts the liquid baffle plate 657 to enable the liquid baffle plate 657 and the movable column 652 to move upward for a certain distance. The anti-slip ring 650 and the limit ring 659 limit the maximum distance of the movable column 652 moving upward and downward. The impact of the pushing head 653 on the pushing head 653 enables the end plate 656, the fixed rod 655 and the filter screen 63 to vibrate.

[0046] In this embodiment, the liquid flowing into the liquid-conducting hose 4 can be filtered to a certain extent, and large foreign objects contained in the liquid will not enter, thereby preventing the internal opening of the liquid-conducting hose 4 from being closed. At the same time, during the filtering process, the filter screen 63 can be vibrated to a certain extent, which can greatly reduce the possibility of the gaps in the filter screen 63 being closed.

[0047] The present invention also includes a method for using the splash prevention device for drilling, and the method includes the following steps:

[0048] Normal use: The liquid in the well flows in from the liquid inlet 3 at the lower end of the shell 1, and after being filtered by the filter structure 6, enters the lower end of the liquid guide hose 4. The liquid finally flows into the connecting pipe 9 through the liquid guide hose 4, and is collected through the connecting pipe 9 and processed in the subsequent links. During the whole process, the shell 1 is stabilized by the connection of the lifting ear 8;

[0049] The anti-splashing function is enabled: in this link, it is necessary to control the flow of the liquid in the liquid-conducting hose 4. The electric cylinder 54 is pushed so that the pushing assembly 55 on the surface of the sliding column 52 clamps the corresponding part of the liquid-conducting hose 4, thereby controlling the flow of the liquid in the liquid-conducting hose 4. At the same time, according to the adjustment of the distance between the two groups of sliding columns 52, the flow in the liquid-conducting hose 4 can be controlled, or even blocked and closed to prevent the liquid in the well from splashing out to the outside, thereby achieving the effect of regulation.

[0050] In summary, the use principle of the present invention is as follows:

[0051] When in use, the mixed liquid flows upward from the liquid inlet 3 at the lower end of the housing 1, passes through the gaps in the filter 63, and finally flows into the interior of the liquid-conducting hose 4, and then is discharged to the outside through the connecting pipe 9;

[0052] When the liquid flows upward from the lower opening of the liquid inlet 3, the liquid will hit the blade 643, and the blade 643 will drive the rotating shaft 642 to rotate and guide the liquid to the lower end of the liquid guiding hose 4, and the liquid will hit the liquid baffle plate 657 at the same time, which can push the movable column 652 upward, and the top of the movable column 652 will be hit by the rotating blade 643, and the movable column 652 will move up and down under the hitting. When the movable column 652 moves to the lowermost end, the pushing head 653 will push the end plate 656, so that the end plate 656 and the fixing rod 655 periodically push the filter screen 63 downward to produce a vibration effect, thereby preventing the gap of the filter screen 63 from being blocked. At the same time, the vibration effect of the filter screen 63 can be increased through the action of the vibration spring 62;

[0053] When it is necessary to limit the liquid flow in the liquid-conducting hose 4 to prevent splashing, the electric cylinder 54 can be extended and pushed to make the two groups of sliding columns 52 approach each other until the pushing plate 553 contacts the sheath 561 and squeezes the sheath 561 together with the liquid-conducting hose 4 until the sheath 561 is flattened. At this time, the No. 2 closing strip 563 is embedded between the two groups of No. 1 closing strips 562, and the pushing spring 552 pushes the pushing plate 553 at the same time, so as to maintain the sealing effect of the liquid-conducting hose 4 and achieve the effect of closing the liquid-conducting hose 4. At the same time, the caliber of the liquid passing through the liquid-conducting hose 4 can be freely adjusted according to the extended length of the electric cylinder 54, so as to achieve the effect of limiting the flow, and reduce the effect of water splashing outward from the end of the connecting tube 9 away from the liquid-conducting hose 4, thereby achieving the function of preventing splashing.

[0054] It should be noted that the stability of the back and forth movement of the sliding column 52 can be maintained by the sliding block 53 and the sliding groove 51 .

[0055] It should be noted that, through the action of the sliding groove 658, the anti-slip ring 650 and the limit ring 659, the maximum distance that the movable column 652 can move upward can be limited, that is, the maximum distance that the movable column 652 moves upward will not exceed the top height of the blade 643, and the blade 643 can always hit the top of the movable column 652.

[0056] 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. A splash prevention device for drilling, comprising a housing (1), characterized in that: The shell (1) has a cavity (2) formed inside, a liquid inlet (3) formed at one end of the shell (1), a liquid guide hose (4) passing through the inside of the shell (1), a flow control structure (5) being connected between the liquid guide hose (4) and the inner wall of the shell (1), and a filtering structure (6) being provided at the inner side of the liquid inlet (3) corresponding to the lower end of the shell (1); The flow control structure (5) comprises a slide groove (51) formed on the inner wall surface of the housing (1); a sliding column (52) is arranged inside the cavity (2) of the housing (1); two ends of the sliding column (52) are fixedly connected with sliding blocks (53); an electric cylinder (54) is connected between the sliding column (52) and the inner wall of the housing (1); a push assembly (55) is arranged on the outer surface of one side of the sliding column (52); a sealing assembly (56) is arranged at a position of the outer surface of the liquid guiding hose (4) corresponding to the sliding column (52); the push assembly (55) is used to push the liquid guiding hose (4) to close the corresponding position on the surface; and the sealing assembly (56) is used to protect the liquid guiding hose (4) and enhance the sealing performance of the liquid guiding hose (4) after closing.

2. The splash prevention device for drilling according to claim 1, characterized in that: The liquid inlet (3) is in the shape of a cone-shaped opening, and the upper end of the liquid inlet (3) is connected to the lower end of the liquid guiding hose (4); the filtering structure (6) comprises an inner recessed groove (61) provided on the inner side of the lower end of the outer shell (1); a vibration spring (62) is provided inside the inner recessed groove (61); the lower end of the vibration spring (62) is connected to a filter screen (63); a rotating component (64) is provided on the inner side of the lower end of the outer shell (1) near the upper end of the liquid inlet (3); a vibration component (65) is provided between the rotating component (64) and the filter screen (63); the rotating component (64) is used to rotate under the flow of liquid; the vibration component (65) is used to cooperate with the rotating component (64) to generate vibration and transmit it to the filter screen (63).

3. The splash prevention device for drilling according to claim 1, characterized in that: The push-up assembly (55) comprises a recessed groove (551) formed on one side surface of the sliding column (52); a push-up spring (552) is connected to the inside of the recessed groove (551) on the inner side of the sliding column (52); one end of the push-up spring (552) is connected to a push-up plate (553); the sealing assembly (56) comprises a sheath (561) fixedly connected to the outer surface of the liquid-conducting hose (4); and a first closing strip (562) and a second closing strip (563) are fixedly connected to the inner wall surface of the liquid-conducting hose (4).

4. The splash prevention device for drilling according to claim 2, characterized in that: The rotating assembly (64) comprises a fixed seat (641) fixedly connected to the inner surface of the housing (1) near the upper end of the liquid inlet (3); the outer surface of the fixed seat (641) is rotatably connected to a rotating shaft (642); the surface of the rotating shaft (642) is fixedly connected to a blade (643); the vibration assembly (65) comprises a sleeve (651) fixedly connected to the upper end of the filter screen (63); the inner side of the sleeve (651) is slidably connected to a movable column (652); the lower end of the movable column (652) is fixedly connected to a push head (653); the sleeve (651) and the filter screen (63) are fixedly connected. The movable column (652) is fixedly connected with a plate body, a connecting spring (654) is connected between the lower end of the movable column (652) and the plate body, the axis of the sleeve (651) is fixedly connected with a fixing rod (655) through the plate body, the top of the fixing rod (655) is fixedly connected with an end plate (656), the outer surface of the movable column (652) is fixedly connected with a liquid blocking plate (657), a sliding groove (658) is provided on the inner side of the sleeve (651), a limiting ring (659) is fixedly connected to the inner side of the upper end of the sleeve (651), and an anti-slip ring (650) is fixedly connected to the outer surface of the movable column (652) near the lower end.

5. The splash prevention device for drilling according to claim 1, characterized in that: One end of the housing (1) is fixedly connected to a fixing ring (7) via a bracket, the outer surface of the fixing ring (7) is fixedly connected to a lifting ear (8), and the upper end of the liquid guiding hose (4) is fixedly connected to a connecting pipe (9).

6. The splash prevention device for drilling according to claim 1, characterized in that: The slide block (53) slides along the length direction of the slide groove (51); a set of the slide column (52) corresponds to two sets of the slide block (53), the electric cylinder (54) and the slide groove (51); an end of the electric cylinder (54) away from the output is fixedly connected to the inner wall of the housing (1); the output end of the electric cylinder (54) is fixedly connected to the slide column (52); and the closing of the inner channel of the liquid guiding hose (4) is achieved by the two sets of symmetrical slide columns (52) being squeezed close to each other.

7. The splash prevention device for drilling according to claim 2, characterized in that: The number of the sunken grooves (61) is several groups and they are distributed in a ring array. The upper and lower elastic ends of the vibration spring (62) are fixedly connected to the outer shell (1) and the filter screen (63) respectively. The diameter of the filter screen (63) is smaller than the maximum diameter of the lower end of the liquid inlet (3) by 1 cm to 2 cm. Large impurities in the drilling leakage are filtered through the filter screen (63).

8. The splash prevention device for drilling according to claim 3, characterized in that: The push spring (552) is arranged transversely, and the elastic ends of the push spring (552) are fixedly connected to the sliding column (52) and the push plate (553) respectively. The push plate (553) and the sliding column (52) are slidably connected. The push plate (553) squeezes the sheath (561) to achieve the closing of the liquid guiding hose (4). One group of the second closing strips (563) corresponds to two groups of the first closing strips (562), and the spacing between the two groups of the first closing strips (562) matches the corresponding second closing strips (563). The second closing strip (563) is a rubber composite material.

9. The splash prevention device for drilling according to claim 4, characterized in that: The rotating shaft (642) is rotatably connected to the fixed seat (641) via a bearing, and the liquid flows from the liquid inlet (3) into the liquid guide hose (4) to provide power for the rotation of the blade (643). The liquid impacts the liquid baffle plate (657) to achieve the upward movement of the liquid baffle plate (657) and the movable column (652) for a certain distance. The anti-slip ring (650) and the limit ring (659) limit the maximum distance of the movable column (652) moving upward and downward. The impact of the push head (653) on the push head (653) achieves the vibration of the end plate (656), the fixed rod (655) and the filter screen (63).

10. A method for using the drilling splash prevention device according to any one of claims 1 to 9, characterized in that: The method of use includes the following steps: Normal use: the liquid in the well flows in from the liquid inlet (3) at the lower end of the housing (1), is filtered by the filtering structure (6), and then enters the lower end of the liquid guiding hose (4). The liquid finally flows into the connecting pipe (9) through the liquid guiding hose (4), is collected through the connecting pipe (9) and enters the subsequent link for processing. During the whole process, the housing (1) is stabilized by the connection to the lifting lug (8); The anti-splashing function is enabled: in this link, it is necessary to control the flow rate of the liquid in the liquid-conducting hose (4). The electric cylinder (54) is pushed so that the pushing assembly (55) on the surface of the sliding column (52) clamps the corresponding part of the liquid-conducting hose (4), thereby controlling the flow rate of the liquid in the liquid-conducting hose (4). At the same time, according to the adjustment of the distance between the two groups of sliding columns (52), the flow rate in the liquid-conducting hose (4) can be controlled, or even blocked and closed, to prevent the liquid in the well from splashing out to the outside, thereby achieving the effect of regulation.

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