Descaling device for inner wall of pipe fitting
By using pneumatic motor-driven cleaning components in the oil pipe to clean the scaling of the inner wall of the oil pipe, the problems of oil pipe blockage and high production costs are solved, and the reuse and cost reduction of the oil pipe are achieved.
Patent Information
- Application Number
- CN202421599110.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-05
AI Technical Summary
After the oil pipe is used for a long time, fouling such as wax and rust will occur inside, resulting in blockage and production reduction of oil pipes. Usually, new oil pipes are replaced periodically to increase production costs.
A pipe fitting inner wall descaling device is provided, including a pneumatic motor and a cleaning assembly. The pneumatic motor generates a rotation torque through compressed gas. The protrusion of the cleaning assembly is connected to the motor shaft. When rotating, it abuts the scaling of the inner wall of the pipe fitting and blows out the scaling through the second cleaning structure.
Effectively clean the scaling of the inner wall of the oil pipe, realize the reuse of the oil pipe, reduce production costs, and accelerate heat movement through the airflow to reduce the internal temperature of the pipe fittings.
Smart Images
Figure CN222919261U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of pipe fitting cleaning, and particularly to a device for removing scale from the inner wall of a pipe fitting. Background Art
[0002] An oil pipe is a pipeline that transports crude oil and natural gas from an oil and gas reservoir to the surface after drilling is completed.
[0003] Currently, after long-term use, the inner wall of the oil pipe will scale, such as wax formation and rusting, which will further lead to problems such as oil pipe blockage and production reduction. For this reason, new oil pipes usually need to be replaced periodically, resulting in high production costs. Summary of the Utility Model
[0004] The present disclosure provides a device for removing scale from the inner wall of a pipe fitting. One technical problem to be solved is to clean scale deposits such as wax and rust inside the oil pipe, realize the reuse of the oil pipe, and reduce production costs.
[0005] To solve the above technical problem, an embodiment of the present disclosure provides a device for removing scale from the inner wall of a pipe fitting, which is used to extend into the pipe fitting to clean the scale on the inner wall of the pipe fitting. The device for removing scale from the inner wall of a pipe fitting may include: a pneumatic motor and a cleaning assembly. The pneumatic motor has a cylinder and a motor shaft. The cylinder has a cylinder inner space and a first air inlet and a first air outlet communicating with the cylinder inner space. Compressed gas sequentially passes through the first air inlet, the cylinder inner space, and the first air outlet to generate a rotational torque on the motor shaft. The cleaning assembly is arranged at one end of the pneumatic motor corresponding to the motor shaft. The cleaning assembly includes: a first cleaning structure and a second cleaning structure. The first cleaning structure is connected to the motor shaft and can rotate with the motor shaft. A plurality of convex parts capable of abutting against the scale on the inner wall of the pipe fitting are arranged on the circumferential side of the rotation direction of the first cleaning structure. The second cleaning structure is provided with a second air inlet and a second air outlet communicating with each other. The second air inlet is communicated with the first air outlet, and the second air outlet faces the convex part or the inner wall of the pipe fitting.
[0006] In some embodiments, the first cleaning structure includes: a first structural member and a plurality of second structural members. The first structural member is connected to the motor shaft. The first structural member is provided with a receiving cavity and a plurality of openings communicating with the receiving cavity. The plurality of second structural members are arranged in the receiving cavity and are in one-to-one correspondence with the plurality of openings. When the first structural member rotates with the motor shaft, at least part of the second structural members extend out of the first structural member from the corresponding openings to form the convex parts.
[0007] In some embodiments, the cylinder is provided with the first air outlet on the surface corresponding to the first structural member; the first structural member is provided with multiple second air inlets on the surface corresponding to the cylinder, the multiple second air inlets are distributed around the circumference of the motor shaft, and after the first structural member rotates with the motor shaft, they are respectively opposite to the first air outlet so as to be connected with the first air outlet, and the second air outlets are provided on the circumferential surface of the first structural member.
[0008] In some embodiments, a gap between the second structure extending from the opening and the opening forms the second air outlet.
[0009] In some embodiments, the second air outlet is located on a side of the convex portion close to the cylinder, and an inner wall forming the second air outlet is inclined toward the convex portion.
[0010] In some embodiments, there are multiple second air outlets, which correspond one-to-one to the multiple convex portions.
[0011] In some embodiments, the second cleaning structure includes: an extension tube, the openings at both ends of the extension tube are the second air inlet and the second air outlet respectively, and one end of the extension tube corresponding to the second air inlet is connected to the position of the cylinder corresponding to the first air outlet.
[0012] In some embodiments, the plurality of protrusions extend in a spiral shape around the first cleaning structure; or, the plurality of protrusions are distributed in multiple rows and columns around the first cleaning structure.
[0013] In some embodiments, the protrusion is a polygonal protrusion with sharp edges.
[0014] In some embodiments, the device for descaling the inner wall of the pipe may also include: a support rod, whose two ends in the extension direction are provided with a third air inlet and a third air outlet that are connected to each other, one end of the support rod provided with the third air outlet is connected to the end of the cylinder away from the motor shaft, and the third air outlet is connected to the first air inlet.
[0015] Through the above technical solution, the descaling device for the inner wall of a pipe provided by the present disclosure includes: a pneumatic motor and a cleaning assembly. The pneumatic motor has a cylinder and a motor shaft. The cylinder has an inner cylinder space, a first air inlet and a first air outlet communicating with the inner cylinder space. Compressed gas sequentially passes through the first air inlet, the inner cylinder space and the first air outlet to generate a rotational torque on the motor shaft. The cleaning assembly is arranged at one end of the pneumatic motor corresponding to the motor shaft. The cleaning assembly includes: a first cleaning structure and a second cleaning structure. The first cleaning structure is connected to the motor shaft and can rotate with the motor shaft. A plurality of convex parts capable of abutting against the scale on the inner wall of the pipe are arranged on the circumferential side in the rotation direction of the first cleaning structure. The second cleaning structure is provided with a second air inlet and a second air outlet communicating with each other. The second air inlet is communicated with the first air outlet, and the second air outlet faces the convex part or the inner wall of the pipe. When the descaling device for the inner wall of the pipe is used to remove the scale on the inner wall of the pipe, the descaling device for the inner wall of the pipe is sent into the pipe, and then compressed air is sent into the first air inlet, so that the compressed air enters the inner cylinder space from the first air inlet and is discharged from the first air outlet to have a high-speed flow characteristic. The compressed gas with a high-speed flow characteristic causes the motor shaft to have a rotational torque and rotate. Furthermore, the first cleaning structure connected to the motor shaft rotates, and during the rotation, the convex parts abutting against the scale can push the scale off from the inner wall of the pipe. In this way, after moving the descaling device for the inner wall of the pipe along the length direction of the pipe from one end of the pipe to the other end of the pipe, the scale on the entire inner wall of the pipe can be cleaned. During this process, the gas sent out from the first air outlet is sent to the second air outlet through the second air inlet. When the second air outlet faces the convex part, the compressed gas blown out from the second air outlet can blow off the scale cleaned from the inner wall of the pipe and attached to the convex part, so as to reduce the probability that the convex part cannot further push the scale on the inner wall of the pipe to fall off due to too much scale on the convex part. When the second air outlet faces the inner wall of the pipe, the compressed gas blown out from the second air outlet can blow the scale pushed off by the convex part in the pipe and the scale still attached to the inner wall of the pipe, so that after the descaling device for the inner wall of the pipe moves along the length direction of the pipe, the scale falling off from the inner wall of the pipe can be blown out from the other end of the pipe, making the descaling operation more thorough. In addition, during the process of the convex part acting on the scale on the inner wall of the pipe, heat is generated between the convex part and the scale, causing the temperature inside the pipe to be too high. The compressed gas blown out from the second air outlet can accelerate the transfer of heat to reduce the temperature.
[0016] The above description is only an overview of the technical solution of the present disclosure. In order to be able to understand the technical means of the present disclosure more clearly and implement it according to the content of the specification, the following describes in detail with reference to the preferred embodiments of the present disclosure and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.
[0018] Figure 1 Schematic cross-sectional structure diagram of a pipe inner wall descaling device provided by an embodiment of the present disclosure (the second structural member is located in the accommodation cavity of the first structural member);
[0019] Figure 2 Schematic cross-sectional structure diagram of a pipe inner wall descaling device provided by an embodiment of the present disclosure (under the action of centrifugal force, part of the second structural member is located outside the first structural member to form a convex part);
[0020] Figure 3 Schematic cross-sectional structure diagram of a pipe inner wall descaling device provided by an embodiment of the present disclosure;
[0021] Figure 4 Schematic cross-sectional structure diagram of a pipe inner wall descaling device provided by an embodiment of the present disclosure with a part extending into the pipe;
[0022] Figure 5 Schematic cross-sectional structure diagram of a pipe inner wall descaling device provided by another embodiment of the present disclosure;
[0023] Figure 6 Schematic structure diagram of a first cleaning structure provided by another embodiment of the present disclosure;
[0024] Figure 7 Schematic structure diagram of a first cleaning structure provided by still another embodiment of the present disclosure.
[0025] Explanation of reference numerals:
[0026] 10. Pipe inner wall descaling device;
[0027] 11. Pneumatic motor; 111. Cylinder; 1111. Cylinder inner space; 1112. First air inlet; 1113. First air outlet; 112. Motor shaft;
[0028] 12. Cleaning assembly; 121. First cleaning structure; 1211. Convex part; 1212. First structural member; 1213. Second structural member; 1214. Accommodation cavity; 1215. Opening; 122. Second cleaning structure; 1221. Second air inlet; 1222. Second air outlet; 1223. Extension pipe;
[0029] 13. Support rod; 131. Third air inlet; 132. Third air outlet;
[0030] 20. Pipe fittings. Specific implementation manners
[0031] The following further describes the implementation manners of the present disclosure in detail with reference to the accompanying drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.
[0032] These embodiments are provided by the present disclosure to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.
[0033] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0034] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.
[0035] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.
[0036] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.
[0037] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.
[0038] Currently, after long-term use, wax scaling and rusting will occur inside the tubing, which will in turn lead to problems such as tubing blockage and production reduction. For this reason, new tubing is usually replaced periodically, resulting in high production costs.
[0039] In the inner wall descaling device 10 of this disclosure, a first cleaning structure 121 and a second cleaning structure 122 are provided. The convex part 1211 of the first cleaning structure 121 can push down the scale on the inner wall of the pipe fitting 20 to realize the reuse of the pipe fitting 20 and reduce the production cost. Moreover, the second cleaning structure 122 can convey air flow to the convex part 1211 to reduce the scale attached to the convex part 1211 that is pushed down from the pipe fitting 20, so as to ensure that the convex part 1211 continuously and effectively pushes down the scale on the inner wall of the pipe fitting 20; alternatively, the second cleaning structure 122 can convey air flow to the inner wall of the pipe fitting 20 to blow the scale that has been pushed down or not pushed down on the inner wall of the pipe fitting 20, and finally blow it out of the pipe fitting 20, so that the effect of scale treatment is more thorough.
[0040] This disclosure provides an inner wall descaling device 10 for a pipe fitting, which is used to extend into the pipe fitting 20 to clean the scale on the inner wall of the pipe fitting 20. See Figures 1 to 7As shown, the descaling device 10 for the inner wall of the pipe fitting may include: a pneumatic motor 11 and a cleaning assembly 12. The pneumatic motor 11 may include: a cylinder 111 and a motor shaft 112. The cylinder 111 has a cylinder inner space 1111 and a first air inlet 1112 and a first air outlet 1113 communicating with the cylinder inner space 1111. Compressed gas sequentially passes through the first air inlet 1112, the cylinder inner space 1111, and the first air outlet 1113 to cause the motor shaft 112 to generate a rotational torque. The cleaning assembly 12 is disposed at one end of the pneumatic motor 11 corresponding to the motor shaft 112. The cleaning assembly 12 may include: a first cleaning structure 121 and a second cleaning structure 122. The first cleaning structure 121 is connected to the motor shaft 112 and can rotate with the motor shaft 112. A plurality of convex portions 1211 capable of abutting against the scale on the inner wall of the pipe fitting 20 are provided on the circumferential side of the rotation direction of the first cleaning structure 121. The second cleaning structure 122 is provided with a second air inlet 1221 and a second air outlet 1222 communicating with each other. The second air inlet 1221 is communicated with the first air outlet 1113, and the second air outlet 1222 faces the convex portions 1211 or the inner wall of the pipe fitting 20.
[0041] When removing scale (such as wax deposition and rust on the inner wall of an oil pipe; scale on the inner wall of a boiler pipe) on the inner wall of the pipe fitting 20 through the inner-wall scale removal device 10 of the pipe fitting, the inner-wall scale removal device 10 of the pipe fitting is sent into the pipe fitting 20, and then compressed air is sent into the first air inlet 1112, so that the compressed air enters the cylinder space 1111 from the first air inlet 1112 and is discharged from the first air outlet 1113 to have the characteristic of high-speed flow. The compressed gas with the characteristic of high-speed flow makes the motor shaft 112 have a rotational torque and rotate. Furthermore, the first cleaning structure 121 connected to the motor shaft 112 rotates, and during the rotation, the abutting convex part 1211 against the scale can push the scale off from the inner wall of the pipe fitting 20. In this way, after moving the inner-wall scale removal device 10 of the pipe fitting along the length direction of the pipe fitting 20 from one end of the pipe fitting 20 to the other end of the pipe fitting 20, the scale on the entire inner wall of the pipe fitting 20 can be cleaned off, so as to realize the reuse of the pipe fitting 20 and reduce the production cost. During this process, the gas sent out from the first air outlet 1113 is sent to the second air outlet 1222 through the second air inlet 1221. When the second air outlet 1222 faces the convex part 1211, the compressed gas blown out from the second air outlet 1222 can blow off the scale that is cleaned off from the inner wall of the pipe fitting 20 and adheres to the convex part 1211, so as to reduce the probability that the convex part 1211 cannot further push the scale on the inner wall of the pipe fitting 20 to fall off due to too much scale on the convex part 1211; when the second air outlet 1222 faces the inner wall of the pipe fitting 20, the compressed gas blown out from the second air outlet 1222 can blow the scale pushed off by the convex part 1211 in the pipe fitting 20 and the scale still adhering to the inner wall of the pipe fitting 20, so that after the inner-wall scale removal device 10 of the pipe fitting moves along the length direction of the pipe fitting 20, the scale falling off from the inner wall of the pipe fitting 20 can be blown out from the other end of the pipe fitting 20, making the scale removal operation more thorough. In addition, during the process that the convex part 1211 acts on the scale on the inner wall of the pipe fitting 20, heat is generated between the convex part 1211 and the scale, causing the temperature inside the pipe fitting 20 to be too high, and the compressed gas blown out from the second air outlet 1222 can accelerate the movement of heat to reduce the temperature.
[0042] Among them, the pneumatic motor 11 can be a vane-type pneumatic motor, a piston-type pneumatic motor, a compact vane-type pneumatic motor, a compact piston-type pneumatic motor, etc.; the motor shaft 112 is the output shaft of the pneumatic motor 11. The compressed gas can be compressed air, can also be compressed inert gas, and can also be compressed other gases. The convex part 1211 can be a polygonal convex part with edges and corners to increase the sharpness when the convex part 1211 acts on the scale, so as to be able to more easily push the scale off from the inner wall of the pipe fitting 20. For example, the convex part 1211 is a triangular convex part, a rhombic convex part, etc.; the convex part 1211 can also be an arc-shaped convex part to reduce the wear amount when the convex part 1211 pushes off the scale. For example, the convex part 1211 is a circular convex part, a strip-shaped convex part with an arc-shaped corner. The second cleaning structure 122 can be such asFigures 1 to 4 shown and provided on the first cleaning structure 121, or it may also be as Figure 5 shown and provided on the pneumatic motor 11. Next, examples will be given for illustration respectively.
[0043] In some embodiments, referring to Figures 1 to 5 as shown, the first cleaning structure 121 may include: a first structural member 1212 and a plurality of second structural members 1213. The first structural member 1212 is connected to the motor shaft 112. The first structural member 1212 is provided with a receiving cavity 1214 and a plurality of openings 1215 communicating with the receiving cavity 1214. The plurality of second structural members 1213 are arranged in the receiving cavity 1214 and are in one-to-one correspondence with the plurality of openings 1215. When the first structural member 1212 rotates with the motor shaft 112, at least part of the second structural members 1213 extend out of the first structural member 1212 from the corresponding openings 1215 to form protrusions 1211.
[0044] For example, Figure 1 when the motor shaft 112 in [] does not rotate, the plurality of second structural members 1213 are located in the receiving cavity 1214, so that the radial dimension of the pipe inner wall descaling device 10 corresponding to the cleaning assembly 12 is small, so that when the pipe inner wall descaling device 10 enters the pipe 20, the probability of the part of the second structural member 1213 extending out of the first structural member 1212 to form the protrusion 1211 colliding with the inner wall of the pipe 20 and causing damage can be reduced; Figure 2 when compressed gas flows in the cylinder 111 in [], the first structural member 1212 rotates with the rotation of the motor shaft 112, and further causes the plurality of second structural members 1213 to respectively extend out of the corresponding openings 1215 one by one under the centrifugal force when the first structural member 1212 rotates, so as to form a plurality of protrusions 1211 on the circumferential side of the first structural member 1212, and the size of the second structural member 1213 extending out of the opening 1215 under the action of centrifugal force can stop after abutting against the scale, so that the extending size can be adaptively adjusted according to the size of the scale, so as to adapt to the cleaning of different scales of different sizes at different positions.
[0045] The connection between the first structural member 1212 and the motor shaft 112 may be welding, or may be a threaded connection adapted to each other, or may be other connection methods. The plurality of openings 1215 may be evenly arranged along the circumferential side of the first structural member 1212. In this way, the area of the inner wall of the pipe 20 that each second structural member 1213 needs to clean is the same, so that the service lives of the plurality of second structural members 1213 tend to be consistent. In this way, the plurality of second structural members 1213 can be repaired and replaced synchronously.
[0046] In some embodiments, referring to Figure 1 and Figure 2As shown, a first air outlet 1113 is provided on the surface of the first structural member 1212 corresponding to the cylinder 111; a plurality of second air inlets 1221 are provided on the surface of the first structural member 1212 corresponding to the cylinder 111, and the plurality of second air inlets 1221 are distributed around the circumference of the motor shaft 112, and are respectively opposite to the first air outlet 1113 after the first structural member 1212 rotates with the motor shaft 112, so as to be connected with the first air outlet 1113, and the second air outlets 1222 are provided on the circumferential side surface of the first structural member 1212. That is, the two surfaces of the cylinder 111 and the first structural member 1212 facing each other are respectively provided with a first air outlet 1113 and a plurality of second air inlets 1221, and during the rotation of the first structural member 1212, the plurality of second air inlets 1221 are sequentially opposite to the first air outlet 1113, so that the compressed gas delivered by the first air outlet 1113 can sequentially enter the plurality of second air inlets 1221, and then be delivered through the second air outlet 1222 connected to the second air inlet 1221; and the inclination direction of the inner wall of the second air outlet 1222 can be set so that the second air outlet 1222 faces the convex portion 1211 or the inner wall of the pipe 20. The second cleaning structure 122 in the present disclosure reuses the first structural member 1212 of the first cleaning structure 121, so as to reduce the number of parts of the pipe inner wall descaling device 10 and reduce its manufacturing cost.
[0047] In some embodiments, see Figure 2 As shown, the gap between the second structural member 1213 extending from the opening 1215 and the opening 1215 forms the second air outlet 1222. It can also be said that the size of the opening 1215 is larger than the size of the second structural member 1213, so that after the second structural member 1213 extends from the opening 1215, there is a gap between the second structural member 1213 and the opening 1215, and the gap forms the second air outlet 1222. In this way, the size of the opening 1215 larger than the second structural member 1213 can reduce the probability that the second structural member 1213 cannot extend from the opening 1215 to form the convex portion 1211 when there are manufacturing errors, assembly errors, etc. between the second structural member 1213 and the opening 1215, or even hit the inner wall of the first structural member 1212 to cause the first structural member 1212 to crack or other damage, and can reduce the number of through holes on the first structural member 1212, so as to reduce the manufacturing process.
[0048] In some embodiments, the second air outlet 1222 is located on a side of the convex portion 1211 close to the cylinder 111, and the inner wall of the second air outlet 1222 is inclined toward the convex portion 1211. In other words, the second air outlet 1222 faces the convex portion 1211, so that the convex portion 1211 first pushes off the scale on the inner wall of the pipe 20, and then blows off the scale attached to the convex portion 1211 through the second air outlet 1222, so as to ensure that the convex portion 1211 continues to push the inner wall of the pipe 20 to fall off efficiently.
[0049] In some embodiments, the number of the second air outlets 1222 is multiple and corresponds to the multiple convex portions 1211 one by one. In this way, each convex portion 1211 corresponds to a second air outlet 1222, so as to ensure the efficiency of continuously pushing off the inner wall of the pipe fitting 20 by each convex portion 1211.
[0050] In other embodiments, refer to Figure 5 As shown, the second cleaning structure 122 includes: an extension pipe 1223. The two ends of the extension pipe 1223, namely openings 1215, are respectively a second air inlet 1221 and a second air outlet 1222. One end of the extension pipe 1223 corresponding to the second air inlet 1221 is connected to the position of the first air outlet 1113 of the air cylinder 111. That is to say, the second cleaning structure 122 is arranged on the pneumatic motor 11 and extends towards the convex portion 1211 or the inner wall of the pipe fitting 20. In this way, the second air inlet 1221 and the first air outlet 1113 can be directly connected, so that the compressed air sent out by the first air outlet 1113 can enter the second air inlet 1221 faster and more smoothly, reducing the loss amount.
[0051] In some embodiments, refer to Figure 6 As shown, the multiple convex portions 1211 extend spirally on the circumferential side of the first cleaning structure 121; or, refer to Figure 7 As shown, the multiple convex portions 1211 are distributed in multiple rows and multiple columns on the circumferential side of the first cleaning structure 121. As the first cleaning structure 121 rotates, each convex portion 1211 rotates along one inner wall circle of the inner wall of the pipe fitting 20. In this way, the multiple convex portions 1211 can rotate along multiple inner wall circles of the inner wall of the pipe fitting 20, so as to push off the scale on the inner wall of the pipe fitting 20; in specific implementation, one of them can be flexibly selected for setting. For example, in order to reduce the number of convex portions 1211 to reduce costs, the multiple convex portions 1211 can be selected to extend spirally on the circumferential side of the first cleaning structure 121; and in order to make the cleaning effect better, the multiple convex portions 1211 can be selected to be distributed in multiple rows and multiple columns on the circumferential side of the first cleaning structure 121.
[0052] In some embodiments, refer to Figure 3 and Figure 4As shown, the pipe inner wall descaling device 10 may also include: a support rod 13, the two ends of which in the extension direction are provided with a third air inlet 131 and a third air outlet 132 that are connected to each other, and one end of the support rod 13 provided with the third air outlet 132 is connected to the end of the cylinder 111 away from the motor shaft 112, and the third air outlet 132 is connected to the first air inlet 1112. In this way, a worker or a manipulator can grasp the support rod 13, and extend the end of the support rod 13 provided with the cylinder 111 into the interior of one end of the pipe 20, so as to clean the inner wall of the pipe 20 through the cleaning assembly 12, and then move the support rod 13 along one end of the pipe 20 to the other end of the pipe 20, so as to gradually complete the cleaning of different positions in the length direction of the pipe 20.
[0053] Here, the support rod 13 can be a hollow structure so that the two ends of the support rod 13 itself have a third air inlet 131 and a third air outlet 132; the support rod 13 can also be a hollow structure, and an air pipe is arranged inside it, and the two ends of the air pipe have a third air inlet 131 and a third air outlet 132.
[0054] In one example, a pipe inner wall descaling device 10 is provided, which is used to extend into a pipe 20 to clean the scale on the inner wall of the pipe 20, see Figures 1 to 4 As shown, the pipe inner wall descaling device 10 may include:
[0055] Pneumatic motor 11, pneumatic motor 11 may include: a cylinder 111 and a motor shaft 112, the cylinder 111 has an inner cylinder space 1111 and a first air inlet 1112 and a first air outlet 1113 connected to the inner cylinder space 1111, and compressed gas passes through the first air inlet 1112, the inner cylinder space 1111 and the first air outlet 1113 in sequence to enable the motor shaft 112 to generate a rotational torque.
[0056] A cleaning component 12, which is arranged at one end of the pneumatic motor 11 corresponding to the motor shaft 112, and the cleaning component 12 may include: a first cleaning structure 121 and a second cleaning structure 122, the first cleaning structure 121 is connected to the motor shaft 112 and can rotate with the motor shaft 112, and the first cleaning structure 121 is provided with a plurality of protrusions 1211 that can abut against scale on the inner wall of the pipe fitting 20 on the circumferential side of the rotation direction, and the second cleaning structure 122 is provided with a second air inlet 1221 and a second air outlet 1222 that are connected to each other, the second air inlet 1221 is connected to the first air outlet 1113, and the second air outlet 1222 faces the inner wall of the pipe fitting 20. The first cleaning structure 121 may include: a first structural member 1212 and a plurality of second structural members 1213, the first structural member 1212 being connected to the motor shaft 112, the first structural member 1212 being provided with a receiving cavity 1214 and a plurality of openings 1215 connected to the receiving cavity 1214, the plurality of second structural members 1213 being arranged in the receiving cavity 1214 and being opposite to the plurality of openings 1215 one by one; when the first structural member 1212 rotates with the motor shaft 112, at least a portion of the second structural members 1213 extend from the corresponding openings 1215 outside the first structural member 1212 to form a convex portion 1211.
[0057] The support rod 13 has a third air inlet 131 and a third air outlet 132 connected to each other at both ends of its extension direction. One end of the support rod 13 provided with the third air outlet 132 is connected to the end of the cylinder 111 away from the motor shaft 112, and the third air outlet 132 is connected to the first air inlet 1112.
[0058] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.
[0059] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.
Claims
1. A pipe inner wall descaling device, used to extend into the pipe to clean the scale on the inner wall of the pipe, characterized in that: The pipe inner wall descaling device comprises: A pneumatic motor having a cylinder and a motor shaft, wherein the cylinder has an inner cylinder space and a first air inlet and a first air outlet connected to the inner cylinder space, and compressed gas sequentially passes through the first air inlet, the inner cylinder space and the first air outlet to generate a rotational torque on the motor shaft; A cleaning component is arranged at one end of the pneumatic motor corresponding to the motor shaft, and the cleaning component includes: a first cleaning structure and a second cleaning structure, the first cleaning structure is connected to the motor shaft and can rotate with the motor shaft, and the first cleaning structure is provided with a plurality of protrusions on the circumferential side of the rotation direction that can abut against the scale on the inner wall of the pipe; the second cleaning structure is provided with a second air inlet and a second air outlet that are connected to each other, the second air inlet is connected to the first air outlet, and the second air outlet faces the protrusion or the inner wall of the pipe.
2. The device for removing scale from the inner wall of a pipe according to claim 1, characterized in that: The first cleaning structure includes: a first structural member and a plurality of second structural members, the first structural member is connected to the motor shaft, the first structural member is provided with a accommodating cavity and a plurality of openings connected to the accommodating cavity, the plurality of second structural members are arranged in the accommodating cavity and are opposite to the plurality of openings one by one; when the first structural member rotates with the motor shaft, at least part of the second structural members extend from the corresponding openings outside the first structural member to form the convex portion.
3. The device for removing scale from the inner wall of a pipe according to claim 2, characterized in that: The first air outlet is provided on a surface of the cylinder corresponding to the first structural member; The surface of the first structural member corresponding to the cylinder is provided with a plurality of second air inlets, and the plurality of second air inlets are distributed around the circumference of the motor shaft. After the first structural member rotates with the motor shaft, they are respectively opposite to the first air outlets so as to be connected with the first air outlets. The second air outlets are provided on the circumferential surface of the first structural member.
4. The device for removing scale from the inner wall of a pipe according to claim 3, characterized in that: The second air outlet is formed by a gap between the second structure member extending from the opening and the opening.
5. The device for removing scale from the inner wall of a pipe according to claim 3, characterized in that: The second air outlet is located on a side of the convex portion close to the cylinder, and an inner wall forming the second air outlet is inclined toward the convex portion.
6. The device for removing scale from the inner wall of a pipe according to claim 5, characterized in that: There are multiple second air outlets, which correspond one-to-one to the multiple convex parts.
7. The device for removing scale from the inner wall of a pipe according to claim 2, characterized in that: The second cleaning structure includes an extension tube, both ends of which are respectively opened as the second air inlet and the second air outlet, and one end of the extension tube corresponding to the second air inlet is connected to a position of the cylinder corresponding to the first air outlet.
8. The device for removing scale from the inner wall of a pipe according to claim 1, characterized in that: A plurality of protrusions extend in a spiral shape around the first cleaning structure; or, The plurality of protrusions are distributed in multiple rows and columns around the first cleaning structure.
9. The device for removing scale from the inner wall of a pipe according to claim 1, characterized in that: The convex portion is a polygonal convex portion with edges and corners.
10. The device for descaling the inner wall of a pipe according to any one of claims 1 to 9, characterized in that: Also includes: The support rod has a third air inlet and a third air outlet connected to each other at both ends of its extension direction, one end of the support rod provided with the third air outlet is connected to the end of the cylinder away from the motor shaft, and the third air outlet is connected to the first air inlet.