A plugging device for a drainage pipe

Abstract

The present invention discloses a plugging device for drainage pipes, which relates to the field of municipal management facilities and includes: a flexible plugging layer; a main support rod arranged on one side of the flexible plugging layer; a flange slidably sleeved on the outside of the main support rod; a plurality of first support rods movably arranged on the outer periphery of the flange, one end of the first support rod being hinged to the flange; a plurality of second support rods, one end of the second support rod being hinged to one end of the main support rod, and the other end of the first support rod being hinged to the middle of the second support rod; the flexible plugging layer is connected to the plurality of second support rods to form an umbrella-shaped structure; an annular airbag arranged on the outer periphery of the flexible plugging layer, and an air inlet is arranged on the annular airbag; a third support rod, one end being hinged to the main support rod; a support plate, one end being hinged to the other end of the third support rod and the other end being connected to the annular airbag; The flexible plugging layer and the annular airbag are used in combination for plugging, which has the advantages of simple structure, high plugging efficiency, safety and reliability.

Description

Technical Field

[0001] The present invention belongs to the technical field of plugging devices, and more specifically, relates to a plugging device for drainage pipes. Background Art

[0002] At present, there are many ways and methods for plugging drainage pipes, which are generally divided into three categories: temporary facility plugging, fixed facility plugging, and tool plugging. It mainly includes:

[0003] (1) Sack plugging: Applied to the plugging of small and medium-sized drainage pipe channels lacking reliable plugging equipment, short plugging time, and low water pressure; its advantages are low cost and applicability to pipe channels of various diameters and cross-sectional shapes; its disadvantages are poor reliability and durability, and difficult removal.

[0004] (2) Wall plugging: Wall plugging can be divided into brick wall plugging and block plugging. At present, due to various adverse factors, large and extra-large drainage pipe channels lack reliable plugging devices and equipment. Therefore, reducing the water level in the pipe channel by external water diversion and then manually constructing a wall to block in the well has basically become the most commonly used and even the only feasible measure in the current industry; its advantages are applicability to pipe channels of different diameters and cross-sectional shapes, and high safety factor in use; its disadvantages are high danger in manual operation in the well, high removal cost and extreme difficulty, and often due to incomplete removal of the wall plug, the water passing capacity of the drainage pipe channel is insufficient, which has an adverse impact on operation and management.

[0005] (3) Plugging airbag: Widely used in the plugging of small and medium-sized pipe channels, and there are also very few actual cases of its application in large pipe channels; its advantages are convenient use, wide application conditions, and effective sealing; its disadvantages are that due to material reasons, there is a hidden danger of a large safety accident caused by the airbag being scratched by barbs on the surface of the drainage pipe channel, and the larger the pipe diameter, the smaller the water head pressure that the airbag can withstand, and the greater the danger. In foreign countries such as the United States, major safety accidents have occurred due to airbag rupture, and the use of inflatable pipe plugs to plug extra-large pipes is not common at home and abroad.

[0006] (4) Water stop plate: The water stop plate is a non-standard tool, which consists of several parts such as a wooden board, a rubber plate, a sponge water stop strip, and a support; its advantages are applicability to pipe channels of various sizes and cross-sectional dimensions, safe operation, effective plugging, and relatively convenient installation and removal; its disadvantages are that it is only applicable to inspection wells and circular well walls without a sedimentation tank at the pipe orifice.

[0007] (5) Slot gate: The plug gate belongs to a fixed facility and consists of two parts: a gate slot and a plug board; its advantages are convenient sealing and removal, safe and effective; its disadvantages are that it can only be used in a few places where the gate slot and related lifting equipment have been installed.

[0008] In summary, for the plugging method of drainage pipelines and water diversion, except for the fixed facilities of the fixed slot gate plate built in the initial stage of pipeline construction, the airbag plugging has been widely used in recent years. However, due to various factors, the airbag is prone to being punctured, and major losses caused by airbag damage occur both at home and abroad every year. Summary of the Invention

[0009] The object of the present invention is to provide a plugging device for drainage pipelines in view of the deficiencies existing in the prior art. The flexible plugging layer supported by an umbrella structure is mainly used to expand and plug in the pipeline, and the annular airbag is used as an auxiliary to inflate and plug between the inner wall of the pipeline and the flexible plugging layer. A support plate is provided, and when plugging, it is supported on the inner wall of the pipeline through the support plate, so that the annular airbag is fixed stably in the pipeline, avoiding being scratched by the protrusions on the inner wall of the pipeline. The pipeline is plugged by the cooperation of the flexible plugging layer and the annular airbag, realizing rapid plugging operation, and having the advantages of simple structure, convenient and fast operation, high plugging efficiency, safety and reliability.

[0010] In order to achieve the above object, the present invention provides a plugging device for drainage pipelines, including:

[0011] A flexible plugging layer;

[0012] A main support rod, arranged on one side of the flexible plugging layer;

[0013] A flange, slidably sleeved on the outside of the main support rod;

[0014] A plurality of first support rods, movably arranged on the outer periphery of the flange, and one end of the first support rod is hinged to the flange;

[0015] A plurality of second support rods, one end of the second support rod is hinged to one end of the main support rod, and the other end of the first support rod is hinged to the middle of the second support rod;

[0016] The flexible plugging layer is connected to the plurality of second support rods to form an umbrella-shaped structure;

[0017] An annular airbag, arranged on the outer periphery of the flexible plugging layer, and an inflation port is arranged on the annular airbag;

[0018] A third support rod, one end of which is hinged to the main support rod;

[0019] A support plate, one end of which is hinged to the other end of the third support rod, and the other end is connected to the annular airbag.

[0020] Optionally, a chute is provided at one end of the main support rod close to the flexible sealing layer. The chute is axially provided on the outer periphery of the support rod. A through hole is provided inside the flange. A slider matching the chute is provided on the inner periphery of the through hole. A first piston cylinder is provided inside the main support rod, and the telescopic end of the first piston cylinder is connected to the flange.

[0021] Optionally, it further includes:

[0022] A plurality of outer fixing straps, arranged on the side of the flexible sealing layer away from the flange, and the outer fixing straps are arranged in the radial direction of the flexible sealing layer;

[0023] A plurality of inner fixing straps, arranged on the side of the flexible sealing layer close to the flange, and the positions of the inner fixing straps correspond to the positions of the plurality of outer fixing straps;

[0024] A fixing member, arranged on the side of the flexible sealing layer away from the flange, and the fixing member fixes the outer fixing straps and the inner fixing straps to one end of the main support rod.

[0025] Optionally, mounting holes are provided at the ends of the outer fixing straps and the inner fixing straps, and they are connected to the support plate through the mounting holes. Accommodating cavities are formed at the ends of the outer fixing straps and the inner fixing straps, and the annular airbag passes through the accommodating cavities.

[0026] Optionally, it further includes a plugging auxiliary mechanism, and the plugging auxiliary mechanism includes:

[0027] A telescopic rod, and an installation groove is provided inside one end of the telescopic rod;

[0028] A second piston cylinder, arranged in the installation groove;

[0029] A plurality of fourth support rods, and one end of the fourth support rods is movably connected to the telescopic end of the second piston cylinder;

[0030] A plurality of fifth support rods, one end of the fifth support rods is movably connected to the outer wall of the telescopic rod close to the second piston cylinder, the other ends of the fourth support rods are respectively movably connected to the middle parts of the plurality of fifth support rods, and the other ends of the fifth support rods are detachably connected to the main support rod.

[0031] Optionally, two connecting seats are arranged on the outer wall of one end of the telescopic rod close to the second piston cylinder along the axial line direction. The fifth support rod comprises an upper support rod, a lower support rod and a support plate. One ends of the upper support rod and the lower support rod are respectively movably connected with the connecting seats. The other ends of the upper support rod and the lower support rod are respectively movably connected with two ends of the support plate. The distance between the two connecting seats is the same as the length of the support plate. A hinge is arranged on one side of the support plate away from the fourth support rod, and the hinge is detachably connected with the support rod.

[0032] Optionally, it further comprises a recovery mechanism above the well, and the recovery mechanism above the well comprises:

[0033] A support frame, the top of which is detachably connected with the other end of the telescopic rod;

[0034] An air compressor, which is arranged on the support frame;

[0035] A piston cylinder driving device, which is arranged on the support frame.

[0036] Optionally, the air inlet is connected with the air compressor.

[0037] Optionally, the piston cylinder driving device is connected with the first piston cylinder and the second piston cylinder.

[0038] Optionally, the materials of the annular airbag and the flexible sealing layer are high molecular polyethylene.

[0039] The present invention provides a plugging device for a drainage pipeline, and its beneficial effects are as follows:

[0040] 1. For the plugging device of the drainage pipeline, the flexible sealing layer supported by the umbrella structure is mainly used for expanding and plugging in the pipeline, and the annular airbag is used as an auxiliary for inflating and plugging between the inner wall of the pipeline and the flexible sealing layer. Moreover, a support plate is provided. During plugging, it is supported on the inner wall of the pipeline through the support plate, so that the annular airbag is fixed in a stable position in the pipeline, avoiding being scratched by the protrusions on the inner wall of the pipeline. The pipeline is plugged by the cooperation of the flexible sealing layer and the annular airbag, realizing rapid plugging operation, and having the advantages of simple structure, convenient and fast operation, high plugging efficiency, safety and reliability;

[0041] 2. The plugging device of the drainage pipeline adopts an umbrella structure. The flexible sealing layer is retracted on the main support rod, and the annular airbag deflates and shrinks, enabling the plugging device of the drainage pipeline to enter the well in the state of the minimum diameter. Both ends of the plugging auxiliary mechanism are detachably connected, and the main support rod and the telescopic rod have telescopic functions, which can be suitable for plugging all existing models of drainage pipelines into the well and detecting wells with different depths.

[0042] Other features and advantages of the present invention will be described in detail in the following detailed implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] By describing the exemplary embodiments of the present invention in more detail in conjunction with the accompanying drawings, the above and other objects, features, and advantages of the present invention will become more apparent. Among them, in the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0044] Figure 1 FIG. shows a partial structural schematic diagram of a plugging device for a drainage pipe according to an embodiment of the present invention.

[0045] Figure 2 FIG. shows a structural schematic diagram of a plugging auxiliary machine of a plugging device for a drainage pipe according to an embodiment of the present invention.

[0046] Figure 3 FIG. shows a structural schematic diagram of an above-ground recovery mechanism of a plugging device for a drainage pipe according to an embodiment of the present invention.

[0047] Figure 4 FIG. shows a top view of a partial structure of a plugging device for a drainage pipe according to an embodiment of the present invention.

[0048] Figure 5 FIG. shows a cross-sectional view of a partial structure of a plugging device for a drainage pipe according to an embodiment of the present invention.

[0049] DESCRIPTION OF REFERENCE NUMERALS:

[0050] 1, main support rod; 2, flexible plugging layer; 3, flange; 4, first support rod; 5, second support rod; 6, annular airbag; 7, air compressor; 8, inflation port; 9, third support rod; 10, support plate; 11, first piston cylinder; 12, outer fixing strap; 13, inner fixing strap; 14, fixing member; 15, accommodation cavity; 16, piston cylinder driving device; 17, telescopic rod; 18, second piston cylinder; 19, fourth support rod; 20 fifth support rod; 21, connecting seat; 22, support plate; 23, hinge; 24, support frame. DETAILED IMPLEMENTATION

[0051] The following will describe the preferred embodiments of the present invention in more detail. Although the following describes the preferred embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to be able to fully convey the scope of the present invention to those skilled in the art.

[0052] The present invention provides a plugging device for a drainage pipe, comprising:

[0053] Flexible plugging layer;

[0054] Main support rod, arranged on one side of the flexible plugging layer;

[0055] Flange, sleeved on the outside of the main support rod in a sliding manner;

[0056] A plurality of first support rods are movably arranged on the outer periphery of the flange, and one end of the first support rod is hinged to the flange;

[0057] A plurality of second support rods, one end of the second support rod is hinged to one end of the main support rod, and the other end of the first support rod is hinged to the middle of the second support rod;

[0058] The flexible plugging layer is connected to the plurality of second support rods to form an umbrella-shaped structure;

[0059] Annular airbag, arranged on the outer periphery of the flexible plugging layer, and an inflation port is arranged on the annular airbag;

[0060] Third support rod, one end is hinged to the main support rod;

[0061] Support plate, one end is hinged to the other end of the third support rod, and the other end is connected to the annular airbag.

[0062] Specifically, the flexible plugging layer supported by the umbrella structure mainly expands and plugs in the pipeline, and the annular airbag is supplemented by inflating and plugging between the inner wall of the pipeline and the flexible plugging layer. And a support plate is provided. During plugging, it is supported on the inner wall of the pipeline through the support plate, so that the annular airbag is fixed in a stable position in the pipeline, avoiding the inflated annular airbag being scratched by the protrusions on the inner wall of the pipeline. The flexible plugging layer and the annular airbag cooperate with each other to perform pipeline plugging through the mechanical plugging principle, realizing fast plugging operation, and having the advantages of simple structure, convenient and fast operation, high plugging efficiency, safety and reliability.

[0063] In one example, the flexible sealing layer is circular, and all the second support rods are distributed in the radial direction of the flexible sealing layer. One end of all the second support rods in the circumferential direction of the flexible sealing layer is arranged at equal intervals, which facilitates the second support rods to drive the flexible sealing layer to close and open; the flange plate moves along the axial line of the main support rod, and the flange plate pulls the second support rod to fold and unfold relative to the main support rod through the first support rod, so as to realize the closing and opening of the flexible sealing layer; the support plate is an arc-shaped support plate, and the arc matches the inner circumferential shape of the pipeline. A rubber pad is covered on the upper part of the support plate to increase the contact area and support strength between the support plate and the inner wall of the pipeline; one end of the support plate is hinged to one end of the second support rod in the circumferential direction of the flexible sealing layer, the other end of the support plate is hinged to one end of the third support rod, and the other end of the third support rod is hinged to the middle of the main support rod. The second support rod, the support plate, the third support rod and the main support rod are hinged to each other to form a parallelogram structure. As the flange plate slides, the flange plate drives the support plate to fold and unfold relative to the main support rod. When the plugging device of the drainage pipeline needs to be unfolded, the flange plate drives the second support rod to keep an open state through the first support rod, and the structure remains stable, so that the annular airbag cannot move on the inner wall of the pipeline, avoiding the annular airbag from being scratched. When the plugging device of the drainage pipeline needs to be folded, the flange plate pulls the second support rod to fold towards the main support rod through the first support rod. Since the second support rod, the support plate, the third support rod and the main support rod are connected by hinges, it is easy to deform, and the support plate folds relative to the main support rod, which facilitates the separation of the support plate from the inner wall of the pipeline, and the plugging device of the drainage pipeline can leave the pipeline more easily.

[0064] Optionally, a chute is provided at one end of the main support rod close to the flexible sealing layer. The chute is axially arranged on the outer periphery of the support rod, a through hole is provided inside the flange plate, and a slider matching the chute is arranged on the inner periphery of the through hole. A first piston cylinder is arranged inside the main support rod, and the telescopic end of the first piston cylinder is connected to the flange plate.

[0065] Specifically, the first piston cylinder pushes the slider connected to the flange plate in the chute to drive the flexible sealing layer to fold and unfold, with a simple structure and stable operation.

[0066] Optionally, it further includes:

[0067] A plurality of outer fixing straps, which are arranged on the side of the flexible sealing layer away from the flange plate, and the outer fixing straps are arranged in the radial direction of the flexible sealing layer;

[0068] A plurality of inner fixing straps, which are arranged on the side of the flexible sealing layer close to the flange plate, and the positions of the inner fixing straps correspond to the positions of the plurality of outer fixing straps;

[0069] A fixing member, which is arranged on the side of the flexible sealing layer away from the flange plate, and the fixing member fixes the outer fixing straps and the inner fixing straps to one end of the main support rod.

[0070] Specifically, the external fixing strap and the internal fixing strap are arranged on both sides of the flexible sealing layer and both penetrate through the center of the flexible sealing layer. Through holes are provided on the fixing member, and threaded holes are correspondingly provided at one end of the main support rod. Bolts are used to fix the external fixing strap and the internal fixing strap through the center of the flexible sealing layer on the main support rod, which is beneficial to ensuring the stability of the connection positions of the external fixing strap and the internal fixing strap when the flexible sealing layer is retracted and unfolded.

[0071] In one example, there are 3 external fixing straps and 3 internal fixing straps respectively, which are evenly arranged along the radial direction on both sides of the flexible sealing layer.

[0072] Optionally, mounting holes are provided at the ends of the external fixing strap and the internal fixing strap, and they are connected to the support plate through the mounting holes. Accommodating cavities are formed at the ends of the external fixing strap and the internal fixing strap, and the annular airbag is inserted into the accommodating cavities.

[0073] Specifically, the external fixing strap and the internal fixing strap are connected to the support plate through the mounting holes, and the annular airbag is fixed through the accommodating cavity formed between the two, ensuring the relative position between the annular airbag and the support plate; when the flexible sealing layer is unfolded, the support plate stably supports on the inner wall of the pipeline, and the annular airbag will not move on the inner wall of the pipeline, and the phenomenon that the annular airbag is scratched by the protrusions on the inner wall of the pipeline will not occur, improving safety.

[0074] Optionally, it further includes a plugging auxiliary mechanism, and the plugging auxiliary mechanism includes:

[0075] A telescopic rod, and an installation groove is provided inside one end of the telescopic rod;

[0076] A second piston cylinder, which is arranged in the installation groove;

[0077] A plurality of fourth support rods, and one end of each fourth support rod is movably connected to the telescopic end of the second piston cylinder;

[0078] A plurality of fifth support rods, one end of each fifth support rod is movably connected to the outer wall of the end of the telescopic rod close to the second piston cylinder, the other ends of the fourth support rods are respectively movably connected to the middle parts of the plurality of fifth support rods, and the other ends of the fifth support rods are detachably connected to the main support rod.

[0079] Specifically, the plugging auxiliary mechanism is detachably connected to the main support rod, and in order to be suitable for plugging in drainage pipes of different types, plugging devices for drainage pipes of different sizes can be replaced; the telescopic rod has the function of adjustable length, and is suitable for inspection wells of different well depths; the telescopic end of the second piston cylinder drives the fourth support rod and the fifth support rod to move. Since one end of the fifth support rod is movably connected to the telescopic rod, the other end of the fifth support rod is retracted and expanded with the up and down movement of the telescopic end. When the telescopic end moves upward, the fifth support rods retract with each other, so that the plugging auxiliary mechanism is in the well with the minimum diameter, and the operation is easy. When the telescopic end moves downward, the fifth support rods expand with each other, which facilitates the contact between the other end of the fifth support rod and the pipe mouth, so that the plugging auxiliary mechanism is stably in contact with the pipe mouth, which is beneficial for the plugging device of the drainage pipe to plug the pipe.

[0080] Optionally, two connecting seats are provided on the outer wall of one end of the telescopic rod close to the second piston cylinder along the axial line direction, the fifth support rod includes an upper support rod, a lower support rod and a support plate, one end of the upper support rod and the lower support rod are respectively movably connected to the connecting seats, the other ends of the upper support rod and the lower support rod are respectively movably connected to the two ends of the support plate, the distance between the two connecting seats is the same as the length of the support plate, and a hinge is provided on the side of the support plate away from the fourth support rod, and the hinge is detachably connected to the support rod.

[0081] Specifically, the upper support rod, the support plate, the lower support rod, and the telescopic rod form a parallelogram structure, and the movement of the telescopic end of the second piston cylinder drives the parallelogram structure to deform, thereby realizing the retraction and expansion of the plugging auxiliary mechanism, and the structure is stable; a support plate is provided to increase the contact area between the fifth support rod and the pipe mouth, so that the contact of the plugging auxiliary mechanism is more stable; the support plate is provided with a hinge, so that after the plugging auxiliary mechanism reaches the pipe mouth, the plugging device of the drainage pipe can rotate to a certain angle and smoothly enter the pipe for plugging operation.

[0082] In one example, two of the fourth support rod, the support plate, the upper support rod and the lower support rod are respectively provided, the lower support rod is arranged in the circumferential direction of the telescopic rod close to one end of the second cylinder, the upper support rod is arranged on the upper part of the lower support rod, the fourth support rod is connected to the middle part of the lower support rod, and the telescopic end of the second piston cylinder drives the upper support rod and the lower support rod to be linked through the fourth support rod to realize the relative retraction and expansion of the two support plates.

[0083] Optionally, it further includes an uphole recovery mechanism, which includes:

[0084] A support frame, the top of which is detachably connected to the other end of the telescopic rod;

[0085] An air compressor is arranged on the supporting frame;

[0086] The piston cylinder driving device is arranged on the supporting frame.

[0087] Specifically, the wellhead recovery mechanism is fixed to the ground through a support frame, an air compressor and a piston cylinder driving device are provided, and workers can operate on the ground to achieve the work of blocking the pipeline.

[0088] Optionally, the inflation port is connected to the air compressor.

[0089] Specifically, the air compressor is connected to the annular airbag through an air pipe. When the blocking device for the drainage pipeline is blocking, the annular airbag is inflated to increase the blocking area for easy blocking; when the blocking device for the drainage pipeline moves in the pipeline, the annular airbag is exhausted to reduce the diameter of the device for easy movement.

[0090] Optionally, the piston cylinder driving device is connected to the first piston cylinder and the second piston cylinder.

[0091] Specifically, the first piston cylinder and the second piston cylinder are respectively connected to the piston cylinder driving device. When the pipe orifice is fixed, the second piston cylinder is started to improve the stability of the pipe orifice fixation. When the blocking device for the drainage pipeline is blocking, the first piston cylinder is started to unfold the flexible blocking layer, increasing the blocking area and the strength of the blocking.

[0092] Optionally, the materials of the annular airbag and the flexible blocking layer are high molecular polyethylene.

[0093] Specifically, the high molecular polyethylene material has the effects of wear resistance and impact resistance, which is beneficial to pipeline blocking. And the high molecular polyethylene material is resistant to low temperature and anti-aging, suitable for various construction environments. Embodiment

[0094] As Figures 1 to 5 shown, the present invention provides a blocking device for a drainage pipeline, including:

[0095] A flexible blocking layer;

[0096] The main support rod 1, arranged on one side of the flexible blocking layer 2;

[0097] The flange 3, slidably sleeved on the outside of the main support rod 1;

[0098] A plurality of first support rods 4, movably arranged on the outer periphery of the flange 3, and one end of the first support rod 4 is hinged to the flange 3;

[0099] A plurality of second support rods 5, one end of the second support rod 5 is hinged to one end of the main support rod 1, and the other end of the first support rod 4 is hinged to the middle of the second support rod 5;

[0100] The flexible blocking layer 2 is connected to the plurality of second support rods 5 to form an umbrella-shaped structure;

[0101] The annular airbag 6 is arranged on the outer periphery of the flexible sealing layer 2, and an inflation port 8 is arranged on the annular airbag 6;

[0102] The third support rod 9, one end of which is hinged to the main support rod 1;

[0103] The support plate 10, one end of which is hinged to the other end of the third support rod 9, and the other end is connected to the annular airbag 6.

[0104] In this embodiment, a chute is provided at one end of the main support rod 1 close to the flexible sealing layer 2. The chute is axially arranged on the outer periphery of the main support rod 1. A through hole is provided inside the flange 3, and a slider matched with the chute is arranged on the inner periphery of the through hole. A first piston cylinder 11 is arranged inside the main support rod 1, and the telescopic end of the first piston cylinder 11 is connected to the flange 3.

[0105] In this embodiment, it further includes:

[0106] A plurality of outer fixing straps 12 are arranged on the side of the flexible sealing layer 2 away from the flange 3, and the outer fixing straps 12 are arranged along the radial direction of the flexible sealing layer 2;

[0107] A plurality of inner fixing straps 13 are arranged on the side of the flexible sealing layer 2 close to the flange 3, and the positions of the inner fixing straps 13 correspond to the positions of the plurality of outer fixing straps 12;

[0108] The fixing member 14 is arranged on the side of the flexible sealing layer 2 away from the flange 3, and the fixing member 14 fixes the outer fixing straps 12 and the inner fixing straps 13 to one end of the main support rod 1.

[0109] In this embodiment, mounting holes are provided at the ends of the outer fixing straps 12 and the inner fixing straps 13, and they are connected to the support plate 10 through the mounting holes. Accommodating cavities 15 are formed at the ends of the outer fixing straps 12 and the inner fixing straps 13, and the annular airbag 6 passes through the accommodating cavities 15.

[0110] In this embodiment, it further includes a plugging auxiliary mechanism, and the plugging auxiliary mechanism includes:

[0111] The telescopic rod 17, and an installation groove is provided inside one end of the telescopic rod;

[0112] The second piston cylinder 18 is arranged in the installation groove;

[0113] A plurality of fourth support rods 19, one end of the fourth support rod 19 is movably connected to the telescopic end of the second piston cylinder 18;

[0114] A plurality of fifth support rods 20, one end of the fifth support rod 20 is movably connected to the outer wall of the telescopic rod 17 near one end of the second piston cylinder 18, the other ends of the fourth support rods 19 are respectively movably connected to the middle parts of the plurality of fifth support rods 20, and the other end of the fifth support rod 20 is detachably connected to the main support rod 1.

[0115] In this embodiment, two connecting seats 21 are arranged on the outer wall of one end of the telescopic rod 17 near the second piston cylinder 18 along the axial line direction. The fifth support rod 20 includes an upper support rod, a lower support rod and a support plate 22. One ends of the upper support rod and the lower support rod are respectively movably connected to the connecting seats 21, and the other ends of the upper support rod and the lower support rod are respectively movably connected to both ends of the support plate 22. The distance between the two connecting seats 21 is the same as the length of the support plate 22. A hinge 23 is arranged on the side of the support plate 22 away from the fourth support rod, and the hinge 23 is detachably connected to the main support rod 1.

[0116] In this embodiment, it further includes a recovery mechanism above the well, and the recovery mechanism above the well includes:

[0117] A support frame 24, the top of the support frame 24 is detachably connected to the other end of the telescopic rod 17;

[0118] An air compressor 7, arranged on the support frame 24;

[0119] A piston cylinder driving device 16, arranged on the support frame 24.

[0120] In this embodiment, the air inlet 8 is connected to the air compressor 7.

[0121] In this embodiment, the piston cylinder driving device 16 is connected to the first piston cylinder 11 and the second piston cylinder 18.

[0122] In this embodiment, the materials of the annular airbag 6 and the flexible sealing layer 2 are high molecular polyethylene.

[0123] In summary, before the plugging operation of the drainage pipe plugging device, first connect the support frame 24 of the above-ground recovery mechanism with the telescopic rod 17 of the plugging auxiliary mechanism, and connect the hinge 23 with the main support rod, so as to achieve the purpose of the above-ground recovery mechanism vertically hoisting the plugging auxiliary mechanism and the main support rod. Then, through the piston cylinder driving device 16, the telescopic end of the second piston cylinder 18 is retracted, driving the fourth support rod 19, the fifth support rod 20, and the support plate 22 to retract and converge into a vertical strip. Then, through the piston cylinder driving device 16, the telescopic end of the first piston cylinder 11 is retracted, driving the flange 3 to slide along the main support rod 1, and the flange 3 drives the first support rod 4, the second support rod 5, the third support rod 9, the support plate 10, the flexible plugging layer 2, and the annular airbag 6 to converge and fold into a vertical strip. When the downhole plugging operation starts, the telescopic rod 17 extends and moves downward to reach the bottom of the inspection chamber. The main support rod 1 changes from the vertical state to the horizontal state in the chute. At this time, the piston cylinder driving device 16 makes the telescopic end of the second piston cylinder 18 extend, driving the fourth support rod 19, the fifth support rod 20, and the support plate 22 to expand outward. After the support plate 22 contacts the pipe orifice, the main support rod 1 finally enters the drainage pipe. Then, through the piston cylinder driving device 16, the telescopic end of the first piston cylinder 11 is extended, driving the flange 3 to slide along the main support rod 1, and the flange 3 drives the first support rod 4, the second support rod 5, the third support rod 9, the support plate 10, the flexible plugging layer 2, and the annular airbag 6 to unfold like an umbrella. At this time, the support plate 10 tightly supports on the inner pipe wall of the drainage pipe. Then, the air compressor 7 inflates the annular airbag 6, so that the annular airbag 6 expands into an annular strip and tightly contacts the inner pipe wall of the drainage pipe under the action of pressure. The flexible plugging layer 2 and the inflated annular airbag 6 are combined into a plugging body to completely block the water flow in the drainage pipe and finally achieve the plugging effect.

[0124] The wellhead recovery mechanism is provided with a support frame 24 and an air compressor 7. The dimensions of the support frame 24 are: length 600 mm, width 600 mm, height 1600 mm. The specifications of the air compressor 7 are: volume flow 0.3 M3 / min, power: 2.2 KW. The dimensions of the support plate 10 are: length 600 mm, width 200 mm, thickness 140 mm. The dimensions of the rubber pad on the support plate 10 are: thickness 100 mm, length 600 mm, width 200 mm. The dimensions of the first support rod 4 are: length 250 mm, width 60 mm, height 40 mm. The dimensions of the second support rod 5 are: length 730 mm, width 60 mm, height 40 mm. The dimensions of the fixing part 14 are: diameter 280 mm, thickness 20 mm. The dimensions of the flange plate 3 are: diameter 180 mm, thickness 20 mm. The dimensions of the chute are: length 350 mm, groove width 50 mm. The specifications of the first piston cylinder 11 are: nominal pressure 16 MPa, stroke 400 mm, length 560 mm, cylinder diameter 100 mm. The dimensions of the annular airbag 6 are: circumferential diameter 1600 mm, airbag diameter 300 mm, three-layer high molecular polyethylene material. The dimensions of the flexible sealing layer 2 are: diameter 1600 mm, six-layer high molecular polyethylene material. The dimensions of the main support rod 1 are length 730 mm, width 60 mm, height 40 mm. The specifications of the plugging auxiliary mechanism's telescopic rod 17 are: total extended length 10000 mm, total retracted length 1600 mm. The specifications of the second piston cylinder are: nominal pressure 16 MPa, stroke 300 mm, length 450 mm. The dimensions of the fourth support rod 19 are: length 230 mm, width 60 mm, height 40 mm. The dimensions of the fifth support rod 20 are: length 730 mm, width 60 mm, height 40 mm. The dimensions of the support plate 22 are: length 800 mm, width 100 mm, thickness 20 mm.

[0125] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A plugging device for a drainage pipe, characterized in that, Comprising: Flexible sealing layer; Main support rod, arranged on one side of the flexible sealing layer; Flange, slidably sleeved on the outside of the main support rod; Multiple first support rods, movably arranged on the outer periphery of the flange, one end of the first support rod being hinged to the flange; Multiple second support rods, one end of the second support rod being hinged to one end of the main support rod, the other end of the first support rod being hinged to the middle of the second support rod; The flexible sealing layer is connected to the multiple second support rods to form an umbrella-like structure; Annular airbag, arranged on the outer periphery of the flexible sealing layer, and an inflation port is arranged on the annular airbag; Third support rod, one end being hinged to the main support rod; Support plate, one end being hinged to the other end of the third support rod and the other end being connected to the annular airbag; The second support rod, the support plate, the third support rod, and the main support rod are hinged to form a parallelogram structure, and when the flexible sealing layer is unfolded, the support plate stably supports on the inner wall of the pipeline; A chute is opened at one end of the main support rod close to the flexible sealing layer, the chute is axially opened on the outer periphery of the support rod, a through hole is opened inside the flange, a slider matching with the chute is arranged on the inner periphery of the through hole, and a first piston cylinder is arranged inside the main support rod, and the telescopic end of the first piston cylinder is connected to the flange; Multiple outer fixing straps, arranged on the side of the flexible sealing layer away from the flange, and the outer fixing straps are arranged in the radial direction of the flexible sealing layer; Multiple inner fixing straps, arranged on the side of the flexible sealing layer close to the flange, and the positions of the inner fixing straps correspond to the positions of the multiple outer fixing straps; Fixing member, arranged on the side of the flexible sealing layer away from the flange, and the fixing member fixes the outer fixing straps and the inner fixing straps to one end of the main support rod.

2. The plugging device for a drainage pipe according to claim 1, characterized in that Installation holes are arranged at the ends of the outer fixing straps and the inner fixing straps, and are connected to the support plate through the installation holes. Accommodation cavities are formed at the ends of the outer fixing straps and the inner fixing straps, and the annular airbag passes through the accommodation cavities.

3. The plugging device for a drainage pipe according to claim 1, wherein, Also included is a plugging auxiliary mechanism, and the plugging auxiliary mechanism includes: Expansion rod, an installation groove is opened inside one end of the expansion rod; Second piston cylinder, arranged in the installation groove; Multiple fourth support rods, one end of the fourth support rod being movably connected to the telescopic end of the second piston cylinder; Multiple fifth support rods, one end of the fifth support rod being movably connected to the outer wall of the expansion rod close to the second piston cylinder, the other ends of the fourth support rods are respectively movably connected to the middle of the multiple fifth support rods, and the other ends of the fifth support rods are detachably connected to the main support rod.

4. The plugging device for a drainage pipe according to claim 3, characterized in that, Two connecting seats are arranged on the outer wall of one end of the telescopic rod close to the second piston cylinder along the axial line direction. The fifth support rod comprises an upper support rod, a lower support rod and a support plate. One ends of the upper support rod and the lower support rod are respectively movably connected to the connecting seats. The other ends of the upper support rod and the lower support rod are respectively movably connected to two ends of the support plate. The distance between the two connecting seats is the same as the length of the support plate. A hinge is arranged on one side of the support plate away from the fourth support rod. The hinge is detachably connected to the support rod.

5. The plugging device for a drainage pipe according to claim 3, characterized in that, It further comprises a recovery mechanism above the well, and the recovery mechanism above the well comprises: A support frame, the top of which is detachably connected to the other end of the telescopic rod; An air compressor, which is arranged on the support frame; A piston cylinder driving device, which is arranged on the support frame.

6. The plugging device for a drainage pipe according to claim 5, characterized in that, The inflation port is connected to the air compressor.

7. The plugging device for a drainage pipe according to claim 5, characterized in that, The piston cylinder driving device is connected to the first piston cylinder and the second piston cylinder.

8. The plugging device for a drainage pipe according to claim 1, characterized in that, The materials of the annular airbag and the flexible sealing layer are high molecular polyethylene.

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