A device for cleaning the interior wall of a small inside diameter long tube

Abstract

The utility model relates to a device for cleaning the inner wall of small inner diameter long pipeline, including main staff, mounting bracket and traction piece, mounting bracket installs on the main staff, and traction piece can be detached and installed in one end of the main staff, install the adjusting mechanism on the main staff, and the one end of adjusting mechanism away from the main staff is installed with several mounting blocks, and several mounting blocks are sequentially and evenly arranged along the circumference of the main staff, and adjusting mechanism is used for adjusting the position of mounting block to adapt to the inner diameter of pipeline, the mounting bracket is installed with several nozzles along its circumference, and the outlet end of nozzle is correspondingly arranged with the inner wall of pipeline, and the inlet end of nozzle is installed with cleaning pipeline, and the one end of cleaning pipeline away from nozzle is used for passing into compressed air or cleaning fluid to clean the inner wall of pipeline, the utility model can replace manual cleaning of the inner wall of small inner diameter long pipeline, improve the cleaning efficiency, and also guarantee the personal safety of operating personnel.

Description

Technical Field

[0001] This utility model relates to the field of pipeline cleaning technology, and in particular to a device for cleaning the inner wall of long pipelines with small inner diameter. Background Technology

[0002] Pipelines have wide applications in both industrial and civilian sectors. In the aerospace industry, because pipelines are critical components for transporting fuel, they need to be kept clean internally, meaning that excess material (such as welding slag and oil) on the inner walls of the pipeline needs to be removed.

[0003] Currently, the method for cleaning pipelines usually involves operators entering the pipeline to perform the cleaning work. However, when cleaning pipelines with a small inner diameter (e.g., less than 500mm) and a long length (e.g., 10m-20m), not only is the cleaning operation extremely inconvenient and inefficient, but the poor air circulation in the middle section of long pipelines also poses a risk of suffocation to the operators, compromising their personal safety.

[0004] Therefore, there is an urgent need for a device to clean the inner walls of long pipes with small inner diameters, to replace manual cleaning of the inner walls of long pipes with small inner diameters, thereby improving cleaning efficiency while ensuring the personal safety of operators. Utility Model Content

[0005] The purpose of this invention is to provide a device for cleaning the inner wall of long pipes with small inner diameters, in order to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a device for cleaning the inner wall of a long pipe with a small inner diameter, including a main rod, a mounting bracket, and a traction component, wherein: The mounting bracket is mounted on the main pole, and the traction component is detachably mounted on one end of the main pole; An adjustment mechanism is installed on the main rod. Several mounting blocks are installed at the end of the adjustment mechanism away from the main rod, and the mounting blocks are evenly arranged in sequence along the circumference of the main rod. The adjustment mechanism is used to adjust the position of the mounting blocks to adapt to the inner diameter of the pipe. The mounting bracket has several nozzles installed around its circumference. The outlet end of each nozzle is positioned corresponding to the inner wall of the pipe. A cleaning pipe is installed at the inlet end of each nozzle. The end of the cleaning pipe furthest from the nozzle is used to introduce compressed air or cleaning fluid to clean the inner wall of the pipe.

[0007] According to one embodiment of the present invention, the mounting frame is a disc structure, the main rod is installed at the center of the mounting frame, and the nozzle is installed at the end of the mounting frame away from the main rod.

[0008] According to one embodiment of the present invention, the adjusting mechanism includes at least a first adjusting block, a plurality of first adjusting rods, a second adjusting block, a plurality of second adjusting rods, and a rotating block, wherein: Both the first adjusting block and the second adjusting block are slidably mounted on the main rod. The first adjusting rod is hinged to the end of the first adjusting block away from the main rod, and the second adjusting rod is hinged to the end of the second adjusting block away from the main rod. A plurality of the first adjusting rods and a plurality of the second adjusting rods are respectively arranged in a one-to-one correspondence with a plurality of the mounting blocks. The end of the first adjusting rod away from the first adjusting block is hinged to the mounting block corresponding to it, and the end of the second adjusting rod away from the second adjusting block is hinged to the mounting block corresponding to it. The main rod has an external thread at the end away from the traction member, and the rotating block is threaded onto the external thread. The end of the first adjusting block near the mounting bracket abuts against the mounting bracket, and the end of the second adjusting block near the rotating block slides with the rotating block.

[0009] According to one embodiment of the present invention, the adjusting mechanism further includes a third adjusting block and a plurality of third adjusting rods, wherein: The third adjusting block is slidably mounted on the main rod and located between the first adjusting block and the second adjusting block. The third adjusting rod is hinged to the end of the third adjusting block away from the main rod, and several third adjusting rods are respectively arranged in one-to-one correspondence with several mounting blocks. The end of the third adjusting rod away from the third adjusting block is hinged to the mounting block corresponding to it.

[0010] According to one embodiment of the present invention, the number of the first adjusting rod, the second adjusting rod, the third adjusting rod, and the mounting block are all three.

[0011] According to one embodiment of the present invention, a handwheel is coaxially mounted on the outer side wall of the rotating block.

[0012] According to one embodiment of the present invention, a handle is installed at the end of the main rod away from the traction member, and the handwheel and the rotating block are both located between the handle and the mounting bracket.

[0013] According to one embodiment of the present invention, a plurality of wheels are rotatably mounted on the end of the mounting block away from the main rod, and the axial direction of the wheels is perpendicular to the length direction of the pipe.

[0014] According to one embodiment of the present invention, the wheel is a rubber wheel.

[0015] According to one embodiment of the present invention, a bearing is provided between the second adjusting block and the rotating block, the outer ring of the bearing is connected to the second adjusting block, the inner ring of the bearing is connected to the rotating block, and the end of the second adjusting block near the rotating block is slidably engaged with the rotating block through the bearing.

[0016] Beneficial effects This utility model has at least the following technical effects: This utility model, through the arrangement of a main rod, mounting frame, traction component, adjustment mechanism, mounting block, and nozzle, can replace manual cleaning of the inner wall of long pipes with small inner diameters, thereby eliminating the need for operators to clean the inner wall of long pipes with small inner diameters, improving cleaning efficiency while ensuring the personal safety of operators. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the overall structure from another angle; Figure 3 This is a schematic diagram of the overall structure of the first adjusting block, the second adjusting block, and the third adjusting block in this utility model; Figure 4 This is a schematic diagram of the overall structure of the mounting block and wheels in this utility model; Figure 5 This is a schematic diagram of the overall structure of the rotating block and handwheel in this utility model; Figure 6 This is a schematic diagram of the overall structure of the mounting bracket and nozzle in this utility model; Figure 7 This is a schematic diagram of the overall structure of the main rod in this utility model; Figure 8 This is a schematic diagram of the overall structure of the long pipe with a small inner diameter in this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Main rod; 2. First adjusting block; 3. First adjusting rod; 4. Second adjusting block; 5. Second adjusting rod; 6. Third adjusting block; 7. Third adjusting rod; 8. Mounting block; 9. Wheel; 10. Handwheel; 11. Handle; 12. Mounting bracket; 13. Nozzle; 14. Traction component; 15. Rotating block. Detailed Implementation

[0020] The features and exemplary embodiments of various aspects of this utility model will be described in detail below. To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this utility model and to exemplarily illustrate the principles of this utility model, and are not configured to limit this utility model. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or regions in the drawings may be enlarged for other structural components or regions to aid in the understanding of the embodiments of this utility model.

[0021] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this utility model. In the description of this utility model, it should be noted that, unless otherwise stated, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Furthermore, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure or component that includes a list of elements includes not only those elements but also other structural elements that are not expressly listed or inherent to the structure or component. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes the element.

[0023] Spatial relation terms such as "below," "under," "under," "low," "above," "on," and "high" are used for descriptive convenience to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device, in addition to those different from those shown in the figure. Furthermore, phrases such as "one element on / below another element" can indicate that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first" and "second" are also used to describe individual elements, areas, parts, etc., without specifically indicating order or sequence, and should not be considered restrictive. Similar terms are used throughout the description to represent similar elements.

[0024] For those skilled in the art, this invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples.

[0025] In the following embodiments, there may be descriptions such as "this device". Those skilled in the art should understand that "this device" refers to a device provided by the present invention for cleaning the inner wall of a long pipe with a small inner diameter.

[0026] like Figures 1-7 As shown, this utility model provides a device for cleaning the inner wall of a long pipe with a small inner diameter. Figure 1 and Figure 2 As shown, this device includes at least a main rod 1, a mounting frame 12, and a traction component 14, wherein: like Figure 1 and Figure 2 As shown, the mounting bracket 12 is mounted on the main rod 1, and the traction component 14 is detachably mounted on one end of the main rod 1.

[0027] In this embodiment, as Figure 7 As shown, the main rod 1 can be a cylindrical structure, which is not specifically limited here.

[0028] In this embodiment, the traction member 14 can be a flexible rope (i.e. a rope capable of bending deformation) known in the art, and is not particularly limited here.

[0029] In this embodiment, the mounting bracket 12 can be installed on the main rod 1 by welding connections known in the art, and the traction member 14 can be detachably installed on one end of the main rod 1 by rope knots known in the art (i.e., Figure 1 The left end of the main rod 1 is not specifically defined here.

[0030] like Figure 1 and Figure 2As shown, an adjustment mechanism is installed on the main rod 1. Several mounting blocks 8 are installed at the end of the adjustment mechanism away from the main rod 1, and the mounting blocks 8 are evenly arranged sequentially along the circumference of the main rod 1. The adjustment mechanism is configured to adjust the position of the mounting blocks 8 so that the device can adapt to the inner diameter of the pipe (i.e., the long pipe with a small inner diameter to be cleaned, which is referred to as the pipe for ease of description).

[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the mounting block 8 can be a cuboid or approximately a cuboid structure, and no particular limitation is made here.

[0032] like Figure 1 , Figure 2 and Figure 6 As shown, a plurality of nozzles 13 are evenly installed on the mounting bracket 12 along its circumference. The outlet end of the nozzle 13 is correspondingly set to the inner wall of the pipe. The inlet end of the nozzle 13 is installed (i.e. connected and communicated) with a cleaning pipeline (not shown in the figure) known in the art. The end of the cleaning pipeline away from the nozzle 13 is used to introduce compressed air or cleaning fluid. That is, the outlet end of the nozzle 13 can spray compressed air or cleaning fluid onto the inner wall of the pipe to clean the inner wall of the pipe.

[0033] In this embodiment, as Figure 6 As shown, the number of nozzles 13 can be 24, and no special limit is made here.

[0034] In this embodiment, the nozzle 13 can be a high-pressure nozzle or an atomizing nozzle known in the art, and is not particularly limited herein.

[0035] In this embodiment, the cleaning pipeline is located at Figure 1 The mounting bracket 12 is located on the side away from the traction member 14, and the cleaning pipeline can preferably be a corrugated pipe or a telescopic hose known in the art, without particular limitation.

[0036] In this embodiment, the number of cleaning pipes can be the same as the number of nozzles 13 (24 in this embodiment), that is, each cleaning pipe is connected to the inlet end of each nozzle 13. Alternatively, the number of cleaning pipes can be one, and the inlets of the nozzles 13 can all be connected to each other sequentially through a connecting pipe (not shown in the figure) known in the art (which can also be regarded as the inlets of the nozzles 13 being connected in series). In this case, by connecting the cleaning pipes to any one of the connecting pipes through a tee pipe (not shown in the figure) known in the art, the cleaning pipes can be interconnected with all the nozzles 13, thereby greatly reducing the number of cleaning pipes used.

[0037] Specifically, in this embodiment, such as Figure 6 As shown, the mounting bracket 12 can be a disc structure. For example, Figure 1 and Figure 2 As shown, the main rod 1 can be installed at the center of the mounting frame 12 (i.e., at the center of the mounting frame 12), while several nozzles 13 are installed sequentially and evenly at the end of the mounting frame 12 away from the main rod 1.

[0038] According to one embodiment of the present invention, specifically, as follows: Figure 1 and Figure 2 As shown, the adjustment mechanism includes at least a first adjustment block 2, several first adjustment rods 3, a second adjustment block 4, several second adjustment rods 5, and a rotating block 15, wherein: The first adjusting block 2 and the second adjusting block 4 are both slidably mounted on the main rod 1. A plurality of first adjusting rods 3, one end of which is near the first adjusting block 2, are sequentially and evenly hinged along the circumference of the first adjusting block 2 to the end of the first adjusting block 2 away from the main rod 1. Similarly, a plurality of second adjusting rods 5, one end of which is near the second adjusting block 4, are sequentially and evenly hinged along the circumference of the second adjusting block 4 to the end of the second adjusting block 4 away from the main rod 1. Each of the first adjusting rods 3 and the second adjusting rods 5 is respectively and correspondingly set with a plurality of mounting blocks 8. Specifically, the end of each first adjusting rod 3 away from the first adjusting block 2 is hinged to the mounting block 8 corresponding to it, and the end of each second adjusting rod 5 away from the second adjusting block 4 is hinged to the mounting block 8 corresponding to it.

[0039] In this embodiment, as Figure 1 and Figure 2 As shown, the first adjusting rod 3 and the second adjusting rod 5 can both be flat cuboids or roughly cuboids, and no particular limitation is made here.

[0040] like Figure 1 , Figure 2 and Figure 7 As shown, the end of the main rod 1 furthest from the traction member 14 (i.e. Figure 1 The right end of the main rod 1 has an external thread, and the rotating block 15 is threaded onto this external thread. The first adjusting block 2 is located at one end near the mounting bracket 12 (i.e., Figure 1 The left end of the first adjusting block 2) and the end of the mounting bracket 12 near the first adjusting block 2 (i.e. Figure 1 The right end of the mounting bracket 12 abuts against the second adjusting block 4 near the end of the rotating block 15 (i.e., Figure 1 The right end of the second adjusting block 4) and the end of the rotating block 15 near the second adjusting block 4 (i.e. Figure 1The left end of the rotating block 15 is in contact with and slides against the end of the rotating block 15 that is close to the second adjusting block 4.

[0041] In this embodiment, as Figure 5 As shown, the rotating block 15 can be cylindrical or approximately cylindrical in shape, and no particular limitation is made here. For example, Figure 5 As shown, an internal thread is provided at the center of the rotating block 15 along the axial direction of the rotating block 15, and the rotating block 15 is threadedly engaged with the external thread on the main rod 1 through this internal thread.

[0042] Furthermore, in order to further improve the stability of the regulating mechanism during regulation, such as Figure 1 and Figure 2 As shown, the adjustment mechanism further includes a third adjustment block 6 and several third adjustment levers 7, wherein: The third adjusting block 6 is slidably mounted on the main rod 1 and located between the first adjusting block 2 and the second adjusting block 4. Several third adjusting rods 7, one end of which is close to the third adjusting block 6, are sequentially and evenly hinged along the circumference of the third adjusting block 6 to the end of the third adjusting block 6 furthest from the main rod 1. Each of the third adjusting rods 7 is correspondingly arranged with one of the mounting blocks 8. Simultaneously, the end of each third adjusting rod 7 furthest from the third adjusting block 6 is hinged to the mounting block 8 corresponding to it (i.e., each of the aforementioned third adjusting rods 7).

[0043] In this embodiment, as Figure 1 and Figure 2 As shown, the third adjusting rod 7 can be a flat cuboid or a roughly cuboid structure, and no particular limitation is made here.

[0044] like Figure 3 As shown, Figure 3 An exemplary schematic diagram of the overall structure of the first adjusting block 2, the second adjusting block 4, and the third adjusting block 6 is shown. It should be understood that since the first adjusting block 2, the second adjusting block 4, and the third adjusting block 6 have the same structure, therefore... Figure 3 This allows one to understand the overall structure of the first adjusting block 2, the second adjusting block 4, and the third adjusting block 6 simultaneously.

[0045] In this embodiment, as Figure 1 and Figure 2 As shown, there are three of each of the following: the first adjusting rod 3, the second adjusting rod 5, the third adjusting rod 7, and the mounting block 8. The included angles between the three first adjusting rods 3, the three second adjusting rods 5, and the three third adjusting rods 7 are all 120°.

[0046] In this embodiment, the above-described hinge method can be achieved by hinge shafts known in the art, and no particular limitation is made here.

[0047] Furthermore, in order to rotate the rotating block 15 more effortlessly, such as Figure 1 , Figure 2 and Figure 5 As shown, a handwheel 10 is coaxially mounted on the outer side wall of the rotating block 15.

[0048] In this embodiment, as Figure 5 As shown, the handwheel 10 can be a circular ring structure or a roughly circular ring structure. The handwheel 10 can be welded to the outer wall of the rotating block 15 via three evenly distributed connecting rods, which is not particularly limited here.

[0049] Furthermore, such as Figure 1 As shown, the end of the main rod 1 furthest from the traction member 14 (i.e. Figure 1 A handle 11 is installed at the right end of the main rod 1. The handwheel 10 and the rotating block 15 are both located between the handle 11 and the mounting bracket 12, and the handwheel 10 and the rotating block 15 are also located between the handle 11 and the second adjusting block 4.

[0050] In this embodiment, as Figure 1 and Figure 2 As shown, the handle 11 can be a long, cylindrical structure. For example, Figure 7 As shown, the end of the main rod 1 away from the traction member 14 can be provided with a handle mounting hole perpendicular to the axis of the main rod 1, and the handle 11 can be inserted into the handle mounting hole in a slightly interference fit manner.

[0051] By using the handle 11, when rotating the rotating block 15, the other hand can hold the handle 11, which can prevent the main rod 1 from rotating with the rotating block 15, thus ensuring the smooth operation of the device.

[0052] Furthermore, in order to reduce the friction between the mounting block 8 and the inner wall of the pipe, such as Figure 1 , Figure 2 and Figure 4 As shown, each mounting block 8 has several wheels 9 rotatably mounted on the end away from the main rod 1, and when the device is located inside the pipe, the axial direction of the wheels 9 is perpendicular to the length direction of the pipe.

[0053] In this embodiment, as Figure 4 As shown, the number of wheels 9 installed on each mounting block 8 can be five, and there is no special limitation here.

[0054] Furthermore, in order to prevent slippage between the wheel 9 and the inner wall of the pipe, the wheel 9 can be a rubber wheel known in the art.

[0055] Furthermore, in order to reduce the sliding friction between the second adjusting block 4 and the rotating block 15, a bearing (not shown in the figure and known in the art) is provided between the second adjusting block 4 and the rotating block 15. The outer ring of the bearing can be connected to the second adjusting block 4, and the inner ring of the bearing can be connected to the rotating block 15. That is, the end of the second adjusting block 4 near the rotating block 15 is configured to allow sliding engagement with the end of the rotating block 15 near the second adjusting block 4 via the bearing.

[0056] In this embodiment, the bearing can be a tapered roller bearing known in the art, and is not particularly limited herein.

[0057] It should be understood that the inner ring of the bearing can also be connected to the second adjusting block 4, and the outer ring of the bearing can also be connected to the rotating block 15. That is, the end of the second adjusting block 4 near the rotating block 15 can be configured to slide through the bearing to the end of the rotating block 15 near the second adjusting block 4. No special limitation is made here.

[0058] The working process of this device will be briefly described below with reference to the above embodiments: First, assemble the device, and then place it into the long, small-diameter pipe to be cleaned (the placement can be referenced). Figure 8 ).

[0059] Then, hold the handle 11 with one hand and turn the handwheel 10 with the other hand. This allows you to adjust the position of the wheel 9. When the wheel 9 is in contact with the inner wall of the long pipe with a small inner diameter to be cleaned, stop turning the handwheel 10. This allows the device to be adapted to long pipes with different inner diameters.

[0060] Finally, as needed, compressed air or cleaning fluid is introduced into the nozzle 13 through the cleaning pipeline, and the traction member 14 is pulled by an external traction device (not shown in the figure but known in the art), thereby enabling the device to clean the inner wall of the small-diameter long pipe to be cleaned.

[0061] In the above description, for example, if only solid particles such as welding slag or dust need to be cleaned from the inner wall of the small-diameter long pipe, then compressed air can be introduced into the nozzle 13. If it is necessary to clean oil stains from the inner wall of the small-diameter long pipe at the same time, then cleaning fluid needs to be introduced into the nozzle 13. The method of introducing compressed air or cleaning fluid is known in the art; for example, using a high-pressure air tank or a high-pressure cleaning fluid tank, which are known in the art, will not be elaborated upon here.

[0062] It should be understood that the above-described embodiments or examples of this utility model can be combined with each other and have corresponding technical effects.

[0063] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An apparatus for cleaning the inner wall of a long pipe with a small inner diameter, characterized in that, Includes a main rod (1), a mounting bracket (12), and a traction component (14), wherein: The mounting bracket (12) is mounted on the main rod (1), and the traction member (14) is detachably mounted on one end of the main rod (1); An adjustment mechanism is installed on the main rod (1). A plurality of mounting blocks (8) are installed at the end of the adjustment mechanism away from the main rod (1). The plurality of mounting blocks (8) are arranged evenly in sequence along the circumference of the main rod (1). The adjustment mechanism is used to adjust the position of the mounting blocks (8) to adapt to the inner diameter of the pipe. The mounting bracket (12) has several nozzles (13) installed around its circumference. The outlet end of the nozzle (13) is corresponding to the inner wall of the pipe. The inlet end of the nozzle (13) is equipped with a cleaning pipe. The end of the cleaning pipe away from the nozzle (13) is used to pass compressed air or cleaning fluid to clean the inner wall of the pipe.

2. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 1, characterized in that, The mounting bracket (12) has a disc structure. The main rod (1) is installed at the center of the mounting bracket (12), and the nozzle (13) is installed at the end of the mounting bracket (12) away from the main rod (1).

3. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 1, characterized in that, The adjustment mechanism includes at least a first adjustment block (2), several first adjustment rods (3), a second adjustment block (4), several second adjustment rods (5), and a rotating block (15), wherein: The first adjusting block (2) and the second adjusting block (4) are both slidably mounted on the main rod (1). The first adjusting rod (3) is hinged to the end of the first adjusting block (2) away from the main rod (1). The second adjusting rod (5) is hinged to the end of the second adjusting block (4) away from the main rod (1). Several first adjusting rods (3) and several second adjusting rods (5) are respectively arranged in a one-to-one correspondence with several mounting blocks (8). The end of the first adjusting rod (3) away from the first adjusting block (2) is hinged to the mounting block (8) corresponding to it. The end of the second adjusting rod (5) away from the second adjusting block (4) is hinged to the mounting block (8) corresponding to it. The main rod (1) has an external thread at one end away from the traction member (14), the rotating block (15) is threaded onto the external thread, the first adjusting block (2) abuts against the mounting bracket (12) at one end near the mounting bracket (12), and the second adjusting block (4) slides against the rotating block (15) at one end near the rotating block (15).

4. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 3, characterized in that, The adjustment mechanism further includes a third adjustment block (6) and several third adjustment levers (7), wherein: The third adjusting block (6) is slidably mounted on the main rod (1) and located between the first adjusting block (2) and the second adjusting block (4). The third adjusting rod (7) is hinged to the end of the third adjusting block (6) away from the main rod (1). Several third adjusting rods (7) are respectively arranged in correspondence with several mounting blocks (8). The end of the third adjusting rod (7) away from the third adjusting block (6) is hinged to the mounting block (8) arranged therewith.

5. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 4, characterized in that, The number of the first adjusting rod (3), the second adjusting rod (5), the third adjusting rod (7), and the mounting block (8) are all three.

6. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 3, characterized in that, A handwheel (10) is coaxially mounted on the outer wall of the rotating block (15).

7. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 6, characterized in that, A handle (11) is installed at the end of the main rod (1) away from the traction member (14), and the handwheel (10) and the rotating block (15) are both located between the handle (11) and the mounting bracket (12).

8. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 1, characterized in that, The mounting block (8) has several wheels (9) rotatably mounted on one end away from the main rod (1), and the axial direction of the wheels (9) is perpendicular to the length direction of the pipe.

9. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 8, characterized in that, The wheel (9) is a rubber wheel.

10. The apparatus for cleaning the inner wall of a long pipe with a small inner diameter according to claim 3, characterized in that, A bearing is provided between the second adjusting block (4) and the rotating block (15). The outer ring of the bearing is connected to the second adjusting block (4), and the inner ring of the bearing is connected to the rotating block (15). The end of the second adjusting block (4) near the rotating block (15) slides with the rotating block (15) through the bearing.

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