A steel pipe pickling device

Abstract

The application discloses a steel pipe pickling device and relates to the technical field of steel pipe processing equipment.The steel pipe pickling device comprises a box body, a box cover, a driving motor one, a driving motor two, a first frame body, a second frame body, a limiting baffle one and a limiting baffle two.The driving motor one and the driving motor two are used for control, the first frame body provides space for the placement of the steel pipe, the first frame body is lowered after the steel pipe is placed, the steel pipe is preliminarily separated, then the limiting baffle one uniformly separates the steel pipe, the limiting baffle two limits the separated frame body, the frame body assembly drives the steel pipe to rotate in the pickling solution after the pickling solution is added into the box body, and the steel pipe has a surplus in front, back, left and right positions in the frame body assembly, the limiting baffle one and the limiting baffle two, so that each part of the steel pipe is fully contacted with the pickling solution in the process of the rotating pickling, the problem that the pickling degrees of each part of the steel pipe are inconsistent in the prior equipment is solved, and the pickling degrees of each part of the steel pipe are consistent.

Description

Technical Field

[0001] This application relates to the field of steel pipe processing equipment technology, and in particular to a steel pipe pickling device. Background Technology

[0002] Seamless steel pipes are steel pipes without joints or gaps. They are usually used as pipelines for transporting fluids. In the production and processing of seamless steel pipes, a pickling step is required. In the existing technology, seamless steel pipes are placed in a pickling tank for pickling.

[0003] However, when a bundle of seamless steel pipes is placed into a pickling tank for pickling, multiple steel pipes will come into contact with each other in the pickling tank, which will partially block the pickling solution from reaching the steel pipes. The part of the steel pipe that is blocked cannot be fully immersed by the pickling solution, resulting in inconsistent pickling levels in different parts of the steel pipe.

[0004] Therefore, we need a steel pipe pickling device to solve the problem of inconsistent pickling degrees for different parts of the steel pipe by existing equipment, so that the pickling degree of different parts of the steel pipe can be consistent. Summary of the Invention

[0005] The purpose of this application is to solve the problem of inconsistent pickling degree of different parts of steel pipes by existing equipment. In order to solve the above problem, this application provides a steel pipe pickling device that can make the pickling degree of different parts of steel pipes consistent.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] A steel pipe pickling device includes: a box body, which is hollow and has an opening at the top, and a drain port at the lower left end of the box body, for the placement and discharge of pickling solution; a box cover, which is disposed on the box body; a drive motor, which is disposed at the left end of the box body, and has a moving groove at the right end of the drive motor; a drive motor man, which is disposed at the right end of the box body, and has a moving groove at the left end of the drive motor man; and a frame assembly, which is disposed between the drive motor and the drive motor man, for accommodating and placing the steel pipe for rotational pickling, the frame assembly including: a first frame, which is a cylindrical frame, with centers at both ends of the first frame... A connecting rod 1 is provided, which is located in a first moving groove 1 and a second moving groove 2; a second frame, which is a cylindrical frame, is fitted over the outside of the first frame and covers the first frame. A downwardly extending sliding groove is provided at the center of both ends of the second frame. The upper end of the sliding groove is passed through by the connecting rod 1, and a second connecting rod 2 is provided below the sliding groove, which is located in a first moving groove 1 and a second moving groove 2. An opening is provided at the upper end of the second frame, which is used to move up and down via the connecting rod 2 so that a steel pipe can be inserted into the opening; a limiting ring 1 is located to the right of the drive motor 1 and is used to separate the steel pipes.

[0008] Limiting ring two is located on the left side of the drive motor and is used to limit the left and right positions of the steel pipe.

[0009] In the above technical solution, the embodiment of this application is controlled by a drive motor and a drive motor man. The first frame rises to provide space for the placement of the steel pipe. After the steel pipe is placed, the first frame sinks to initially separate the steel pipe. Then, a limit ring 1 evenly separates the steel pipe, and a limit ring 2 limits the frame after separation. After pickling solution is added into the box, the frame assembly drives the steel pipe to rotate and pickle in the pickling solution. The steel pipe has a margin in the front, back, left and right positions of the frame assembly, the limit ring 1 and the limit ring 2, so that all parts of the steel pipe are in full contact with the pickling solution during the rotation pickling process.

[0010] Furthermore, according to an embodiment of this application, the first frame and the second frame include a crossbeam, an annular rib, and an end cap, and multiple crossbeams and annular ribs are provided.

[0011] Furthermore, according to the embodiments of this application, the crossbeams in the first frame and the second frame are uniformly arranged along the circumferential direction of the annular ribs, the annular ribs are evenly distributed between the left and right ends of the crossbeams, and the end caps are composed of multiple ribs, and the end caps are disposed at both ends of the crossbeams and located in the middle of the annular ribs.

[0012] Furthermore, according to an embodiment of this application, the crossbeam of the first frame is inclined from the middle to the left, with the left side lower than the right side, to guide the steel pipe.

[0013] Furthermore, according to the embodiments of this application, the limiting retaining ring one includes: a moving part one, a connecting part one, and a separating part. The moving part one is disposed inside the drive motor one. The right end of the moving part one is provided with the connecting part one, which is an annular frame. The right end of the connecting part one is provided with the separating part, and the separating part is arranged in a circumferential array at the right end of the connecting part one.

[0014] Furthermore, according to an embodiment of this application, the partition is a semi-circular retaining ring.

[0015] Further, according to the embodiments of this application, the limiting retaining ring two includes: a movable part two, a connecting part two, and a pressing part. The movable part two is disposed inside the drive motor. The left end of the movable part two is provided with the connecting part two. The connecting part one is an annular frame. The right end of the connecting part two is provided with the pressing part. The pressing part is arranged in a circumferential array at the left end of the connecting part two.

[0016] Furthermore, according to an embodiment of this application, the crimping portion is I-shaped.

[0017] Furthermore, according to an embodiment of this application, the bottom of the box body is set with the left side lower than the right side.

[0018] This application also discloses a method for using a steel pipe pickling device, including:

[0019] The lifting mechanism activates drive motor one and drive motor two, controlling the second frame to rise along moving groove one and moving groove two.

[0020] Place the steel pipe into the opening at the top of the second frame;

[0021] The second frame is lowered by starting the first and second frame motors and controlling the second frame to sink along the first and second moving grooves, thus initially separating the steel pipes and placing them between the first and second frames.

[0022] The limiting retaining ring moves to the right to separate the steel pipes;

[0023] Limiting the movement of the second limiting ring to the left, thus limiting the steel pipe after separation;

[0024] Add the pickling solution into the tank and then put the tank lid on the tank.

[0025] Pickling involves rotating the drive motor and the control frame assembly, causing the steel pipe to rotate and be pickled in the pickling solution.

[0026] Compared with the prior art, this application uses a drive motor and a drive motor man for control. The first frame rises to provide space for the steel pipe. After the steel pipe is placed, the first frame sinks to initially separate the steel pipe. Then, a first limiting ring evenly separates the steel pipe, and a second limiting ring limits the frame after separation. After pickling solution is added into the box, the frame assembly drives the steel pipe to rotate and pickle in the pickling solution. The steel pipe has leeway in all directions in the frame assembly, the first limiting ring, and the second limiting ring. During the rotation pickling process, all parts of the steel pipe are fully in contact with the pickling solution, which solves the problem of inconsistent pickling degree of different parts of the steel pipe in the existing equipment and can make the pickling degree of different parts of the steel pipe consistent. Attached Figure Description

[0027] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is an isometric schematic diagram of a steel pipe pickling device without a housing, housing cover, drive motor one, and drive motor two.

[0029] Figure 2 This is an isometric schematic diagram of a steel pipe pickling device without a box or a box cover that does not separate the steel pipes.

[0030] Figure 3 This is a front sectional view of a steel pipe pickling device.

[0031] Figure 4 This is a left sectional view of a steel pipe pickling device when the steel pipe is placed inside.

[0032] Figure 5 This is a left sectional view of a steel pipe pickling device.

[0033] Figure 6 This is an isometric schematic diagram of a limit stop ring in a steel pipe pickling device.

[0034] Figure 7 This is an isometric schematic diagram of the second limiting stop ring in a steel pipe pickling device.

[0035] Figure 8 This is an isometric schematic diagram of the second frame in a steel pipe pickling device.

[0036] Figure 9 This is an isometric schematic diagram of the first frame in a steel pipe pickling device.

[0037] Figure 10 This is a schematic diagram of a steel pipe pickling device with an added arc-shaped spiral groove partition.

[0038] Figure 11 This is a partial sectional view of an improved crimping section of a steel pipe pickling device. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0043] Example 1: As Figure 1-9 As shown, a steel pipe pickling apparatus includes:

[0044] Box 1 is hollow with an opening at the top and a drain outlet at the lower left end. Box 1 is used for the filling and draining of pickling solution. Box 2 is attached to box 1. Drive motor 3 is located at the left end of box 1 and has a moving groove at its right end. Drive motor 7 is located at the right end of box 1 and has a moving groove at its left end.

[0045] Frame assembly 5, disposed between drive motor 3 and drive motor 7, is used to accommodate and place the steel pipe 8 for rotary pickling. Frame assembly 5 includes:

[0046] The first frame 51 is a cylindrical frame. A connecting rod 511 is provided at the center of both ends of the first frame 51, and the connecting rod 511 is provided in the first moving groove and the second moving groove. The second frame 52 is a cylindrical frame. The second frame 52 is fitted on the outside of the first frame 51 and covers the first frame 51. A downwardly extending sliding groove is provided at the center of both ends of the second frame 52. The upper end of the sliding groove is passed through the connecting rod 511. A connecting rod 521 is provided below the sliding groove and is provided in the first moving groove and the second moving groove. An opening is provided at the upper end of the second frame 52. The second frame 52 is used to move up and down through the connecting rod 521 so that the opening can be used to insert the steel pipe 8.

[0047] Limiting ring 1 4 is located on the right side of drive motor 1 3 and is used to separate the steel pipes 8; Limiting ring 2 6 is located on the left side of drive motor 2 7 and is used to limit the left and right positions of the steel pipes 8.

[0048] Controlled by drive motor 3 and drive motor 7, the first frame 51 rises to provide space for the steel pipe 8. After the steel pipe 8 is placed in, the first frame 51 sinks to initially separate the steel pipe 8. Then, the first limiting ring 4 evenly separates the steel pipe 8, and the second limiting ring 6 limits the frame after separation. After adding pickling solution into the box 1, the frame assembly 5 drives the steel pipe 8 to rotate and pickle in the pickling solution. The steel pipe 8 has ample space in all directions within the frame assembly 5, the first limiting ring 4, and the second limiting ring 6. During the rotation pickling process, all parts of the steel pipe 8 are fully in contact with the pickling solution, which solves the problem of inconsistent pickling degree of different parts of the steel pipe 8 in existing equipment, and can make the pickling degree of different parts of the steel pipe 8 consistent.

[0049] The first frame 51 and the second frame 52 include a crossbeam 10, an annular rib 11 and an end cap 9. Multiple crossbeams 10 and annular ribs 11 are provided. In the first frame 51 and the second frame 52, the crossbeams 10 are evenly arranged around the annular ribs 11. The annular ribs 11 are evenly distributed between the left and right ends of the crossbeams 10. The end cap 9 is composed of multiple ribs and is located at both ends of the crossbeams 10 and in the middle of the annular ribs 11.

[0050] The crossbeam 10 of the first frame 51 is inclined from the middle to the left, with the left side lower and the right side higher. After the first frame 51 initially divides the steel pipes 8, the inclined crossbeam 10 of the first frame 51 can guide the steel pipes 8. By rotating, the steel pipes 8 are guided one by one into the limiting ring 4 for separation, making the uniform separation of the steel pipes 8 more precise. This makes the pickling degree of each part of the steel pipe 8 more consistent during the pickling process, further solving the problem of inconsistent pickling degree of each part of the steel pipe 8 in the existing equipment, and making the pickling degree of each part of the steel pipe 8 more consistent.

[0051] The limiting retaining ring 4 includes: a moving part 41, a connecting part 42, and a separating part 43. The moving part 41 is disposed inside the drive motor 3. The right end of the moving part 41 is provided with the connecting part 42, which is an annular frame. The right end of the connecting part 42 is provided with the separating part 43, which is arranged in a circular array on the right end of the connecting part 42. The separating part 43 is composed of two semi-arc retaining rings.

[0052] The partition 43, composed of semi-circular retaining rings, can better cover the left end of the steel pipe 8, preventing the steel pipe 8 from detaching after partitioning. This makes the pickling degree of each part of the steel pipe 8 more consistent during the pickling process, further solving the problem of inconsistent pickling degree of each part of the steel pipe 8 caused by existing equipment.

[0053] The second limiting ring 6 includes: a second moving part 61, a second connecting part 62, and a second pressing part 63. The second moving part 61 is disposed inside the second driving motor 7. The second connecting part 62 is disposed at the left end of the second moving part 61. The second connecting part 62 is an annular frame. The second pressing part 63 is disposed at the right end of the second connecting part 62. The pressing part 63 is arranged in a circumferential array at the left end of the second connecting part 62. The pressing part 63 is in the shape of "I".

[0054] The bottom of the interior of box 1 is set with the left side lower and the right side higher.

[0055] Example 2: Figure 10 As shown, based on Embodiment 1, this embodiment makes further improvements to the partition 43:

[0056] The arc-shaped spiral groove 12 is provided on the inner wall of the semi-arc retaining ring, and the arc-shaped spiral groove 12 is correspondingly provided on the two semi-arc retaining rings of the partition 43.

[0057] By providing an arc-shaped spiral groove 12 on the inner wall of the partition 43, the pickling solution can be diverted during pickling of the steel pipe 8, allowing the pickling solution to better pickle the surface of the steel pipe 8. Furthermore, the arc-shaped spiral groove 12 is correspondingly provided on the semi-arc retaining rings at both ends, which can stabilize the flow of the pickling solution while diverting it, making the pickling of the outer surface of the steel pipe 8 more uniform. This further solves the problem of inconsistent pickling degree of different parts of the steel pipe 8 by existing equipment, and can make the pickling degree of different parts of the steel pipe 8 more uniform.

[0058] Example 3: Figure 11 As shown, based on Embodiment 2, the crimping part 63 in this embodiment has been further improved:

[0059] Drainage groove 13 is provided at the left end of crimping part 63 and extends through crimping part 63 from front to back. There are two drainage grooves 13, and each drainage groove 13 is provided in two semi-circular arc shapes.

[0060] The manifold 14 is located in the middle of the diversion channel 13;

[0061] The outer ends of the diversion channel 13 and the confluence channel 14 are connected to the outer side of the steel pipe 8, and the inner ends are connected to the inner side of the steel pipe 8.

[0062] By using the diversion groove 13 and the confluence groove 14 provided on the crimping part 63, the outer end of the diversion groove 13 can divert the pickling solution during the rotary pickling of the steel pipe 8, allowing the pickling solution to flow laterally into the interior of the steel pipe 8 through the confluence groove 14. This allows the pickling solution on the inner wall of the steel pipe 8 to flow laterally and pickle the inner wall of the steel pipe 8. Furthermore, the two semi-circular arc-shaped diversion grooves 13 can maintain a stable flow rate, ensuring a consistent pickling degree on the inner wall of the steel pipe 8. This further solves the problem of inconsistent pickling degrees on different parts of the steel pipe 8 caused by existing equipment, making the pickling degree on different parts of the steel pipe 8 more consistent.

[0063] Example 4: Figure 1-11 As shown in Example 3, this example also provides a method for using a steel pipe pickling device, including:

[0064] The lifting mechanism activates drive motor 3 and drive motor 7, controlling the second frame 52 to rise along moving groove 1 and moving groove 2.

[0065] Place the steel pipe 8 into the opening at the top of the second frame 52;

[0066] As the frame sinks, drive motor 3 and drive motor 7 start, controlling the second frame 52 to sink along moving groove 1 and moving groove 2, initially separating the steel pipe 8 between the first frame 51 and the second frame 52.

[0067] The limiting retaining ring 4 moves to the right to separate the steel pipe 8;

[0068] Limiting the movement of the second limiting ring 6 to the left, thus limiting the steel pipe 8 after separation;

[0069] Add the pickling solution into the tank 1 and cover the tank 1 with the lid 2.

[0070] Pickling: Drive motor 3 and drive motor 7 control the frame assembly 5 to rotate, causing the steel pipe 8 to rotate and pickle in the pickling solution.

[0071] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A steel pipe pickling apparatus, comprising: The box is hollow with an opening at the top and a drain outlet at the lower left end. The box is used for the filling and draining of pickling solution. A lid, which is disposed on the box body; A drive motor is provided at the left end of the housing, and a moving groove is provided at the right end of the drive motor. A drive motor is provided, which is located at the right end of the housing, and a second movable slot is provided at the left end of the drive motor. The feature is that a frame assembly is disposed between the drive motor 1 and the drive motor 2, the frame assembly being used to accommodate and place the steel pipe for rotary pickling, the frame assembly comprising: The first frame is a cylindrical frame, and a connecting rod is provided at the center of both ends of the first frame. The connecting rod is provided in the first movable groove and the second movable groove. The second frame is a cylindrical frame that is fitted over the outside of the first frame and covers the first frame. The center of both ends of the second frame is provided with a downwardly extending sliding groove. The upper end of the sliding groove is passed through by the first connecting rod. The lower part of the sliding groove is provided with a second connecting rod, which is disposed in the first and second moving grooves. The upper end of the second frame is provided with an opening, which is used to move up and down through the second connecting rod so that a steel pipe can be inserted into the opening. A first limiting ring is provided on the right side of the first drive motor, and the first limiting ring is used to separate the steel pipes. Limiting ring two, the limiting ring two is disposed on the left side of the drive motor, the limiting ring two is used to limit the left and right positions of the steel pipe; The first frame and the second frame include a crossbeam, annular ribs and end caps, and multiple crossbeams and annular ribs are provided; the crossbeam of the first frame is inclined from the middle to the left, with the left side lower and the right side higher, for guiding the steel pipe; The limiting retaining ring includes: a moving part, a connecting part, and a separating part. The moving part is disposed inside the drive motor. The right end of the moving part is provided with the connecting part, which is an annular frame. The right end of the connecting part is provided with a separating part, which is arranged in a circumferential array at the right end of the connecting part. The separating part is a semi-arc retaining ring. The second limiting ring includes: a second movable part, a second connecting part, and a pressing part. The second movable part is disposed inside the drive motor. The second connecting part is disposed at the left end of the second movable part. The second connecting part is an annular frame. The second pressing part is disposed at the right end of the second connecting part. The pressing part is arranged in a circumferential array at the left end of the second connecting part.

2. A pickling apparatus for steel pipes according to claim 1, wherein The crossbeams in the first frame and the second frame are evenly arranged along the circumference of the annular ribs, which are evenly distributed between the left and right ends of the crossbeams. The end cap is composed of multiple ribs and is disposed at both ends of the crossbeams and located in the middle of the annular ribs.

3. A pickling apparatus for steel pipes according to claim 1, wherein The crimping part is I-shaped.

4. A pickling apparatus for steel pipes according to claim 1, wherein The bottom of the box is set with the left side lower than the right side.

5. A method of using a steel pipe pickling apparatus, characterized by The application relates to a method for using a steel pipe pickling device as claimed in any one of claims 1-4, and the method comprises the following steps: lifting, the driving motor one and the driving motor two are started to control the second frame body to ascend along the moving groove one and the moving groove two; placing, the steel pipe is placed into the opening at the upper end of the second frame body; sinking, the driving motor one and the driving motor two are started to control the second frame body to sink along the moving groove one and the moving groove two, so that the steel pipe is preliminarily separated and arranged between the first frame body and the second frame body; separating, the limiting check ring one is moved to the right to separate the steel pipe; limiting, the limiting check ring two is moved to the left to limit the separated steel pipe; adding, pickling liquid is added into the box body, and the box cover is covered on the box body; pickling, the driving motor one and the driving motor two control the frame assembly to rotate, so that the steel pipe is rotated in the pickling liquid for pickling.

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