Pipeline inner wall polishing device

Abstract

The invention discloses a pipeline inner wall grinding device, and relates to the technical field of pipeline grinding, the pipeline inner wall grinding device comprises a frame body, multiple groups of first sliding grooves are embedded in the right side wall of the frame body, the left end of the frame body is rotatably connected with a matching plate, multiple groups of arc-shaped driving grooves are embedded in the side wall of the matching plate, and the first sliding grooves and the arc-shaped driving grooves are in sliding fit with the two ends of a driving rod; the driving rod is T-shaped, and the other end of the driving rod slidably penetrates through the side wall of the frame body and is fixedly connected with the side wall of the accommodating frame in the driving assembly; and through sliding fit of the arc-shaped driving grooves and the T-shaped driving rods, when the matching plate rotates, the multiple sets of driving rods can be synchronously driven to move along the first sliding grooves, fine adjustment of the diameter of a circle defined by the containing frame is achieved, secondary sealing and fixing are formed through inflation expansion of the inflation pump on the rubber ring layer, and the axial stability during grinding is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline polishing, in particular to a pipeline inner wall polishing device. Background Art

[0002] The patent with publication (announcement) number CN222308323U discloses a pipeline inner wall grinding device, including a fixed rod, which is provided with two groups of parallel distributed retractable and expandable movable structures, and a grinding structure is arranged between the two groups of movable structures. The movable structure includes multiple articulated seats rotatably connected to movable wheels, and the multiple articulated seats are hinged to the fixed rod through the articulated rod, and also includes a contraction and expansion mechanism for synchronously adjusting the angle between the multiple articulated rods and the fixed rod. The grinding structure is arranged in multiple groups and is located between two opposite articulated seats in the two groups of movable structures. The grinding structure includes a U-shaped frame. The utility model can be directly supported on both sides of the welding point of the inner wall of the pipeline.

[0003] The patent with publication (announcement) number CN212122644U discloses a grinding device for grinding the inner wall of a stainless steel pipe, including a grinding roller, a grinding groove is provided in the middle of one side of the grinding roller, a slidingly connected adjustment rod is provided in the grinding groove, and the grinding roller is provided with a plurality of first adjustment holes distributed in a circular shape and connected to the grinding groove, each of the first adjustment holes is provided with a slidingly connected first adjustment block, and a fixedly connected grinding block is provided on the outer side of the first adjustment block, and each of the grinding blocks is provided with fixedly connected grinding sand.

[0004] In the above-mentioned prior art, the inner walls of stainless steel pipes of various diameters can be polished by synchronously opening or contracting the grinding block and the polishing block, which is more convenient and quick. In addition, during the grinding process, the area to be polished and the polished area in the pipe are not separated, and the grinding dust in the area to be polished is easily transported to the polished area. Summary of the Invention

[0005] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a pipeline inner wall grinding device.

[0006] The present invention is achieved in this way: a pipeline inner wall grinding device is constructed, which includes a frame body, a right side wall of the frame body is embedded with multiple groups of first sliding grooves, the left end of the frame body is rotatably connected to a matching plate, and the side wall of the matching plate is embedded with multiple groups of arc-shaped driving grooves, the first sliding groove and the arc-shaped driving groove are slidably matched with the two ends of the driving rod, the driving rod is T-shaped, and the other end of the driving rod slides through the side wall of the frame body and is fixedly connected to the side wall of the accommodating frame in the driving assembly; the right side wall of the frame is provided with a control assembly, and the control assembly is connected to the grinding assembly; the accommodating frame in the multiple groups of driving assemblies is fixedly connected to the driving wheel assembly; the multiple groups of accommodating frame side walls are fixedly connected to the side walls of the rubber ring layer, the outer peripheral wall of the rubber ring layer is fixedly connected to the concave plate, the outer surface of the rubber ring layer is fixedly connected to the outer peripheral wall of the frame with a shielding film, and the accommodating frame is bolted with an air pump, and the output end of the air pump is communicated with the rubber ring layer through an output pipe; The rubber ring layer expands as a whole, and the expanded rubber ring layer drives the concave plate to contact the inner wall of the pipe. The concave plate, through the cooperation of the shielding film, divides the grinding area in the inner wall of the pipe into two areas, one is the grinding area, and the other is the grinding completed area, so as to prevent the dust generated in the grinding area during the grinding process from being transported to the grinding completed area.

[0007] Preferably, the two sets of frames are arranged in opposite directions and placed at the left and right ends of the pipeline, and the position between the two sets of frames is adjusted so that the concave plates on the two sets of frames contact the inner wall of the pipeline. The shielding films located at the left and right ends of the pipeline form a closed space with adjustable length between the two sets of shielding films. The air is drawn into the guide pipe by a first suction pump and then enters the closed space through the driving pipe to observe whether there is airflow leakage on the outer wall of the pipeline, and to test whether there are gaps in the side walls of the pipeline or the pipeline welds in this section of the closed space.

[0008] Preferably, the control component includes a base, which is fixedly connected to the right side wall of the frame, and a first motor is bolted to the base. The output shaft of the first motor is fixedly connected to the driving gear, the driving gear is meshed with the driven gear, and the driven gear is rotatably connected to the center of the frame. The inner rotating shaft of the driven gear passes through the center of the frame and is fixedly connected to the center of the mating plate, and the driven gear is used to drive the mating plate to rotate.

[0009] Preferably, the right side wall of the base is rotatably connected to a matching gear, the center of the matching gear is fixedly connected to an auxiliary motor output shaft, the auxiliary motor is bolted to the base, and the matching gear is engaged with the driving gear.

[0010] Preferably, the driving gear is rotatably connected to the base, the center of the driving gear is fixedly connected to the connecting shaft, the other end of the driving gear is fixedly connected to the outer rod, and multiple groups of distance sensors are fixedly connected to the side wall of the outer rod at equal intervals.

[0011] Preferably, an electric push rod is connected to the inner bolt of the outer rod, the telescopic end of the electric push rod is fixedly connected to the sliding rod, a grating scale is embedded in the surface of the sliding rod, a reading head is bolted to the inner wall of the outer rod above the grating scale, and an adjustment assembly is fixedly connected to the end of the sliding rod away from the electric push rod.

[0012] Preferably, the adjustment assembly is composed of an electric push rod, an insertion rod, and a grating ruler, the grating ruler is embedded in the insertion rod, the insertion rod is slidably connected to the sliding rod, and the sliding rod is provided with another set of reading heads that cooperate with the grating ruler; The insert rod is fixedly connected to the grinding assembly.

[0013] Preferably, the driving assembly includes a containing frame, the first suction pump is bolted to the containing frame, a guide tube is fixedly connected to the containing frame, the guide tube is ring-shaped, and passes through multiple groups of inner side walls of the containing frame in a closed arrangement.

[0014] Preferably, the output end of the first suction pump is connected to the guide tube, the guide tube is connected to the drive tube, the drive tube passes through the containing frame and the shielding film and is exposed to the right end area of the frame body, the containing frame is bolted with a guide pump, the output end of the guide pump is connected to the concave plate through a delivery pipe passing through the rubber ring layer, and a valve is provided on the side wall of the containing frame.

[0015] The present invention has the following advantages: The present invention provides a pipeline inner wall grinding device through improvement, which has the following improvements compared with similar devices: The present invention describes a pipe inner wall grinding device, which, through the sliding cooperation between the arc-shaped drive groove and the T-shaped drive rod, can synchronously drive multiple groups of drive rods to move along the first slide groove when the matching plate rotates, thereby achieving fine adjustment of the diameter of the circle surrounded by the accommodating frame. The air pump inflates the rubber ring layer to form a secondary seal and fix it, and ensure axial stability during grinding.

[0016] The present invention describes a pipeline inner wall grinding device, in which an electric push rod drives a sliding rod to move, and a grating ruler cooperates with a reading head to control the feed amount of a grinding wheel; an auxiliary motor drives an outer rod to rotate through a gear set, driving the grinding assembly to achieve 360° circumferential positioning, and the outer rod drives multiple groups of distance sensors to rotate, and the distance sensors can detect the distance between themselves and the side walls of the pipeline. During the rotation of the outer rod, the multiple groups of distance sensors can rotate circumferentially around the center of the pipeline. The multiple groups of distance sensors use the center of the pipeline as a detection point, sense the distance between themselves and the inner wall of the pipeline, and determine whether the circumferential grinding depth of the inner wall of the pipeline is consistent.

[0017] The present invention relates to a device for polishing the inner wall of a pipe. The rubber ring layer expands as a whole. The expanded rubber ring layer drives the concave plate to contact the inner wall of the pipe. The concave plate cooperates with the shielding film to divide the polishing area in the inner wall of the pipe into two areas, one of which is the polishing area and the other is the polished area, thereby preventing dust generated in the polishing area during the polishing process from being transported to the polished area.

[0018] The present invention discloses a device for polishing the inner wall of a pipeline. Two sets of frames are arranged in opposite directions and placed at the left and right ends of the pipeline. The position between the two sets of frames is adjusted so that the concave plates on the two sets of frames contact the inner wall of the pipeline. The shielding films located at the left and right ends of the pipeline form a closed space with adjustable length between the two sets of shielding films. Air is drawn into the guide pipe by a first suction pump and then enters the closed space through a drive pipe to observe whether there is airflow leakage on the outer peripheral wall of the pipeline. The side walls of the pipeline or the pipeline welds in this closed space can also be tested for gaps. When there is only a single set of frames in the pipeline, the air transmitted by multiple sets of drive pipes can blow the polished area in the pipeline in multiple directions.

[0019] The pipeline inner wall polishing device described in the present invention, when testing the weld of the pipeline, is used to draw the solution stored in the receiving frame into the concave plate through the internal diversion pump, and the concave plate wraps the gap of the pipeline. The solution fills the space between the concave plate and the weld, so that the solution in the concave plate contacts the annular gap, and is kept still for a period of time so that the solution contacts the gap; secondly, the diversion pump located in the receiving frame below is controlled to operate, and the diversion pump draws the solution in the concave plate into the interior of the receiving frame, so that the solution in the receiving frame is recovered into the interior of the group of frames; then, other solutions in other groups of receiving frames are respectively transported to the concave plates to test the pipeline gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the use of the present invention and the pipeline Figure 1 ; Figure 2 This is a schematic diagram of the use of the present invention and the pipeline Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention Figure 1 ; Figure 4 This is a schematic diagram of the structure of the present invention Figure 2 ; Figure 5 This is a schematic diagram of the structure of the present invention Figure 3 ; Figure 6 This is a schematic diagram of the structure of the present invention Figure 4 ; Figure 7 It is a schematic diagram of the control component structure of the present invention; Figure 8 It is a schematic diagram of the sliding rod connection structure of the present invention; Figure 9 It is a front view of the present invention; Figure 10 The present invention Figure 9 Cross-sectional view at BB in the figure; Figure 11 It is a left side view of the present invention.

[0021] Among them: frame-1, first slide groove-2, drive rod-3, matching plate-4, arc-shaped drive groove-5, drive assembly-6, control assembly-7, polishing assembly-8, drive wheel assembly-9, rubber ring layer-10, concave plate-11, shielding film-12, inflation pump-13; accommodating frame-61, first suction pump-62, guide tube-63, drive tube-64, guide pump-65, transmission tube-66, valve-67; base-71, first motor-72, drive gear-73, driven gear-74, matching gear-75, driving gear-76, connecting shaft-77, outer rod-78, distance sensor-79, electric push rod-710, sliding rod-711, grating ruler-712, adjustment assembly-713. DETAILED DESCRIPTION

[0022] The following is combined with Figures 1 to 11 The principles and features of the present invention are described, and the examples given are only for the purpose of explaining the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not in exact proportions, and are only used for the purpose of conveniently and clearly assisting in illustrating the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] See also Figures 1 to 11 , a pipe inner wall grinding device of the present invention comprises a frame 1, a plurality of first sliding grooves 2 are embedded in the right side wall of the frame 1, a matching plate 4 is rotatably connected to the left end of the frame 1, a plurality of arc-shaped driving grooves 5 are embedded in the side wall of the matching plate 4, the first sliding groove 2 and the arc-shaped driving groove 5 are slidably matched with the two ends of the driving rod 3, the driving rod 3 is T-shaped, and the other end of the driving rod 3 slides through the side wall of the frame 1 and is fixedly connected to the side wall of the accommodating frame 61 in the driving assembly 6; by controlling the arc-shaped driving groove 5 to drive the plurality of driving rods 3 to move, the plurality of driving rods 3 are Adjust the position of the accommodating frame 61, and thereby adjust the diameter of the circle formed between the multiple groups of accommodating frames 61 and the diameter of the rubber ring layer 10, so that the driving wheel assembly 9 on the accommodating frame 61 contacts the inner wall of the pipe; a controller is provided on the frame body 1, and a 5G communication module is provided on the controller. The 5G communication module is used to control and transmit data to the polishing assembly 8, the driving wheel assembly 9, the air pump 13, the first suction pump 62, the diversion pump 65, the first motor 72, the distance sensor 79, the electric push rod 710, and the grating ruler 712.

[0026] When polishing a pipe, the frame 1 is placed inside the pipe, and then the first motor 72 is controlled to drive the driving gear 73 and the driven gear 74 to rotate. The driven gear 74 drives the matching plate 4 to rotate. The matching plate 4 drives the driving rod 3 and the receiving frame 61 to move through the arc-shaped driving groove 5. The receiving frame 61 drives the multiple sets of driving wheel assemblies 9 to contact the inner wall of the pipe, and then controls the driving wheel assemblies 9 to move axially in the pipe. When it moves to the grinding area, the control adjustment component 713 adjusts the radial position of the grinding component 8, and senses the movement of the grinding component 8 through the grating scale 712 and the reading head in the adjustment component 713, so that the grinding component 8 contacts the inner wall of the pipe, and controls the rotation of the grinding wheel on the grinding component 8, and the grinding wheel grinds the inner wall of the pipe.

[0027] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7A control assembly 7 is provided on the right side wall of the frame 1, and the control assembly 7 is connected to the polishing assembly 8; the accommodating frame 61 in the multiple groups of driving assemblies 6 is fixedly connected to the driving wheel assembly 9, and the driving wheel assembly 9 consists of a base, a roller, and an output motor. The output motor drives the roller to rotate on the base, and the base is fixedly connected to the side wall of the accommodating frame 61; the side walls of the multiple groups of accommodating frames 61 are fixedly connected to the side walls of the rubber ring layer 10 (the rubber ring layer 10 adopts the inflation principle of a bicycle inner tube), and the outer peripheral wall of the rubber ring layer 10 is fixedly connected to a concave plate 11, and the outer surface of the rubber ring layer 10 is fixedly connected to the outer peripheral wall of the frame 1 with a shielding film 12; the left and right ends of the concave plate 11 are outwardly expanded (eight-shaped), so that when the concave plate 11 contacts the pipeline, the left and right ends of the opening of the concave plate 11 are squeezed and expanded outward.

[0028] The air pump 13 is bolted to the receiving frame 61. The output end of the air pump 13 is connected to the rubber ring layer 10 through an output pipe. A one-way valve is provided in the output pipe to prevent the air in the rubber ring layer 10 from flowing back. A sealing cylinder 1A is fixedly connected to the right side wall of the frame 1. The outer rod 78 slides through the sealing cylinder 1A, and the sealing cylinder 1A is in close contact with the outer surface of the outer rod 78 to improve the sealing performance of the shielding film 12. The end of the sealing cylinder 1A away from the frame 1 is coaxial with the driving gear 76, which facilitates the rotation of the outer rod 78.

[0029] An electromagnetic valve 1B is provided in the containing frame 61, one end of which is connected to the rubber ring layer 10 to facilitate the discharge of air in the rubber ring layer 10; multiple groups of containing frames 61 can be filled with gasoline, sodium chloride solution (brine), industrial wastewater, ammonia water, etc.

[0030] During the grinding process, the air pump 13 is controlled to draw gas into the rubber ring layer 10, causing the rubber ring layer 10 to expand as a whole. The expanded rubber ring layer 10 drives the concave plate 11 to contact the inner wall of the pipe. The concave plate 11 cooperates with the shielding film 12 to divide the grinding area on the inner wall of the pipe into two areas, one of which is the grinding area and the other is the polished area, thereby preventing dust generated in the grinding area during the grinding process from being transported to the polished area. The two sets of frames 1 can be placed in opposite directions at the left and right ends of the pipeline, and the position between the two sets of frames 1 can be adjusted so that the concave plates 11 on the two sets of frames 1 are in contact with the inner wall of the pipeline. The shielding films 12 located at the left and right ends of the pipeline form a closed space with adjustable length between the two sets of shielding films 12. The air is extracted by the first suction pump 62 and transported to the guide pipe 63 and then enters the closed space through the drive pipe 64 to observe whether there is air leakage on the outer peripheral wall of the pipeline, and whether there are gaps in the pipeline side wall or pipeline weld in this closed space can be tested. At the same time, when there is only a single set of frames 1, the air transmitted by the multiple sets of driving pipes 64 can purge the polished area in the pipeline in multiple directions.

[0031] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The control assembly 7 includes a base 71, which is fixedly connected to the right side wall of the frame 1. A first motor 72 is bolted to the base 71. The output shaft of the first motor 72 is fixedly connected to a driving gear 73. The driving gear 73 is engaged with a driven gear 74. The driven gear 74 is rotatably connected to the center of the frame 1. The inner shaft of the driven gear 74 passes through the center of the frame 1 and is fixedly connected to the center of the matching plate 4. The driven gear 74 is used to drive the matching plate 4 to rotate; The right side wall of the base 71 is rotatably connected with a matching gear 75, and the center of the matching gear 75 is fixedly connected to an auxiliary motor output shaft. The auxiliary motor is bolted to the base 71, and the matching gear 75 meshes with the driving gear 76. The driving gear 76 is rotatably connected to the base 71, and the center of the driving gear 76 is fixedly connected to the connecting shaft 77. The other end of the driving gear 76 is fixedly connected to the outer rod 78. The side walls of the outer rod 78 are equidistantly fixed with multiple groups of distance sensors 79. An electric push rod 710 is bolted inside the outer rod 78. The telescopic end of the electric push rod 710 is fixedly connected to the sliding rod 711. A grating ruler 712 is embedded in the surface of the sliding rod 711. A reading head is bolted to the inner wall of the outer rod 78 above the grating ruler 712. The sliding rod 711 is fixedly connected to an adjustment component 713 at one end away from the electric push rod 710; the sliding rod 711 is slidably connected to the inner side of the connecting shaft 77.

[0032] The adjustment component 713 consists of an electric push rod 710, an insertion rod, and a grating ruler 712. The grating ruler 712 is embedded in the insertion rod, and the insertion rod is slidably connected to the sliding rod 711. The sliding rod 711 is provided with another set of reading heads that cooperate with the grating ruler 712.

[0033] Among them, the electric push rod 710 is controlled to drive the sliding rod 711 to move, so that the grating ruler 712 on the sliding rod 711 moves, and the movement of the grating ruler 712 is sensed by the reading head, and the X-axis movement of the grinding assembly 8 is known; the auxiliary motor drives the matching gear 75 to rotate, and the matching gear 75 engages to drive the connecting shaft 77 and the outer rod 78 to rotate, and the connecting shaft 77 drives the grinding assembly 8 to rotate, and the grinding assembly 8 can also rotate and grind the inner wall of the pipeline; the outer rod 78 drives multiple sets of distance sensors 79 to rotate, and the distance sensors 79 detect the distance between them and the side wall of the pipeline. During the rotation of the outer rod 78, the multiple sets of distance sensors 79 can rotate circumferentially with the center of the pipeline. The multiple sets of distance sensors 79 use the center of the pipeline as the detection point to sense the distance between them and the inner wall of the pipeline, and know whether the circumferential grinding depth of the inner wall of the pipeline is consistent.

[0034] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 8 , the insert rod is fixedly connected to the grinding assembly 8; the grinding assembly 8 consists of a grinding motor and a grinding wheel and a connecting seat, the grinding wheel is rotatably connected to the connecting seat, the grinding motor is bolted to the connecting seat, and the grinding motor output shaft is fixedly connected to the center of the grinding wheel.

[0035] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11, the driving assembly 6 includes a accommodating frame 61. When in use, the accommodating frame 61 at the bottom is not filled with solution, which is convenient for sucking and recovering the solution. A first suction pump 62 is bolted to the accommodating frame 61, and a guide tube 63 is fixedly connected to the accommodating frame 61. The guide tube 63 is ring-shaped and consists of two parts of silicone and stainless steel. The guide tube 63 inside the accommodating frame 61 is made of stainless steel, and the guide tube 63 between the two groups of accommodating frame 61 side walls is made of silicone, which makes it convenient for the guide tube 63 to stretch and retract as the accommodating frame 61 is expanded or closed. The guide tube 63 passes through multiple groups of accommodating frame 61 inner walls in a closed arrangement. The output end of the first suction pump 62 is connected to the guide tube 63, and the guide tube 63 is connected to the driving tube 64. The dynamic pipe 64 passes through the containing frame 61 and the shielding film 12 and is exposed to the right end area of the frame 1. A diversion pump 65 is bolted inside the containing frame 61. The output end of the diversion pump 65 is connected to the concave plate 11 through a delivery pipe passing through the rubber ring layer 10. The concave plate 11 is an annular structure as a whole, and the cross-section of the concave plate 11 is concave. A valve 67 is provided on the side wall of the containing frame 61, and the liquid in the containing frame 61 is replenished through the valve 67; a one-way valve is provided in the driving pipe 64; the first slide groove 2, the driving rod 3, the matching plate 4, and the arc-shaped driving groove 5 are provided in multiple groups, and the number of the driving rod 3 and the driving assembly 6 is the same; the air inlet end of the first suction pump 62 and the inflation pump 13 are both provided with a filter to prevent dust in the interior from entering the first suction pump 62 and the inflation pump 13.

[0036] When testing the weld of the pipeline, the solution stored in the containing frame 61 is pumped into the concave plate 11 through the internal guide pump 65, and the concave plate 11 wraps the gap of the pipeline inside, and the solution fills the space between the concave plate 11 and the weld (or other solutions in multiple groups of containing frames 61 are respectively extracted and transported to the space between the concave plate 11 and the weld, so that multiple groups of solutions are mixed and contacted with the weld), so that the solution in the concave plate 11 contacts the annular gap, and is allowed to stand for a period of time so that the solution contacts the gap, simulating complex working conditions. synergistic corrosion effect; secondly, the diversion pump 65 in the containing frame 61 below is controlled to operate, and the diversion pump 65 extracts the solution in the concave plate 11 into the interior of the containing frame 61 (and due to gravity, the solution above will automatically slide down to the lower area), so that the solution in the containing frame 61 is recovered to the interior of this group of frames 61; then the other solutions in other groups of containing frames 61 are transported to the concave plate 11 to test the pipeline gap; one group of containing frames 61 is filled with tap water to facilitate cleaning of the pipeline welds.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0038] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipe inner wall grinding device, comprising a frame, a right side wall of the frame having a plurality of first chute groups embedded therein, a left end of the frame being rotatably connected to a mating plate, a side wall of the mating plate having a plurality of arcuate drive grooves embedded therein, the first chute groups and the arcuate drive grooves being slidably engaged with two ends of a drive rod, the drive rod being T-shaped, the other end of the drive rod slidingly passing through the side wall of the frame and being fixedly connected to the side wall of a receiving frame within the drive assembly; It is characterized by The right side wall of the frame is provided with a control component, which is connected to the grinding component; The receiving frames within the multiple drive assemblies are fixedly connected to the drive wheel assemblies; Multiple sets of accommodating frame side walls are fixedly connected to the rubber ring layer side walls, the outer peripheral wall of the rubber ring layer is fixedly connected to a concave plate, and the outer surface of the rubber ring layer is fixedly connected to the outer peripheral wall of the frame with a shielding film; An air pump is bolted to the receiving frame, and an output end of the air pump is connected to the rubber ring layer through an output pipe; The rubber ring layer expands as a whole, and the expanded rubber ring layer drives the concave plate to contact the inner wall of the pipe. The concave plate, through the cooperation of the shielding film, divides the grinding area in the inner wall of the pipe into two areas, one is the grinding area, and the other is the grinding completed area, so as to prevent the dust generated in the grinding area during the grinding process from being transported to the grinding completed area.

2. A pipe inner wall grinding device according to claim 1, characterized in that: The two sets of frames are arranged in opposite directions and placed at the left and right ends of the pipeline, and the position between the two sets of frames is adjusted so that the concave plates on the two sets of frames contact the inner wall of the pipeline. The shielding films located at the left and right ends of the pipeline form a closed space with adjustable length between the two sets of shielding films. The air is drawn into the guide pipe by the first suction pump and then enters the closed space through the drive pipe to observe whether there is airflow leakage on the outer wall of the pipeline, and to test whether there are gaps in the side wall of the pipeline or the pipeline weld in this closed space.

3. A pipe inner wall grinding device according to claim 2, characterized in that: The control component includes a base, which is fixedly connected to the right side wall of the frame. A first motor is bolted to the base. The output shaft of the first motor is fixedly connected to the driving gear. The driving gear is engaged with the driven gear. The driven gear is rotatably connected to the center of the frame. The inner rotating shaft of the driven gear passes through the center of the frame and is fixedly connected to the center of the mating plate. The driven gear is used to drive the mating plate to rotate.

4. A pipe inner wall grinding device according to claim 3, characterized in that: The right side wall of the base is rotatably connected with a matching gear, the center of the matching gear is fixedly connected to an auxiliary motor output shaft, the auxiliary motor is bolted to the base, and the matching gear is meshed with the driving gear.

5. A pipe inner wall grinding device according to claim 4, characterized in that: The driving gear is rotatably connected to the base, the center of the driving gear is fixedly connected to the connecting shaft, the other end of the driving gear is fixedly connected to the outer rod, and the side wall of the outer rod is equidistantly fixedly connected with multiple groups of distance sensors.

6. The pipe inner wall grinding device according to claim 5, characterized in that: An electric push rod is connected to the inner bolt of the outer rod, the telescopic end of the electric push rod is fixedly connected to the sliding rod, a grating ruler is embedded in the surface of the sliding rod, a reading head is bolted to the inner wall of the outer rod above the grating ruler, and an adjustment component is fixedly connected to the end of the sliding rod away from the electric push rod.

7. A pipe inner wall grinding device according to claim 6, characterized in that: The adjustment assembly consists of an electric push rod, an insert rod, and a grating ruler. The grating ruler is embedded in the insert rod, and the insert rod is slidably connected to the sliding rod. The sliding rod is equipped with another set of reading heads that cooperate with the grating ruler. The insert rod is fixedly connected to the grinding assembly.

8. The pipe inner wall grinding device according to claim 1, characterized in that: The driving assembly includes a receiving frame, a first suction pump is bolted to the receiving frame, a guide pipe is fixedly connected to the receiving frame, the guide pipe is ring-shaped, and passes through multiple groups of inner side walls of the receiving frame in a closed arrangement.

9. The pipe inner wall grinding device according to claim 8, characterized in that: The output end of the first suction pump is connected to the guide pipe, the guide pipe is connected to the drive pipe, the drive pipe passes through the containing frame and the shielding film and is exposed to the right end area of the frame. The guide pump is bolted inside the containing frame. The output end of the guide pump is connected to the concave plate through a delivery pipe passing through the rubber ring layer, and a valve is provided on the side wall of the containing frame.

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