Steel pipe inner wall rust removal device

Abstract

The utility model relates to the field of steel pipe machining equipment, in particular to a steel pipe inner wall rust removal device which comprises two sets of spraying assemblies, a pipe rotating assembly and a bottom plate, the spraying assemblies are arranged at the two ends of a steel pipe, a spraying pipe of each spraying assembly is provided with a parabola-shaped spraying head, and a plurality of spraying holes are formed in each spraying head in a scattered mode. The injection pipe can be inserted into the steel pipe to rotate and can axially move; the pipe rotating assemblies are arranged below the steel pipes and can support the steel pipes and drive the steel pipes to rotate. Sand grains are simultaneously sprayed to the inner wall of the steel pipe at different spraying angles by utilizing a plurality of spraying holes in the parabolic spraying head of the spraying pipe of the spraying assembly, the spraying pipe can axially move and rotate, and the steel pipe is driven to rotate in the opposite direction by utilizing the pipe rotating assembly. The spraying assembly can conduct dispersive sand blasting derusting on the inner wall of the steel pipe; the two ends of the steel pipe can be synchronously derusted through the two spraying assemblies arranged at the two ends of the steel pipe, and the steel pipe inner wall derusting effect and the working efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing equipment, specifically to a rust removal device for the inner wall of steel pipes. Background Technology

[0002] Due to space constraints, manual cleaning and rust removal of the inner wall of steel pipes is quite difficult. Although some people use automatic sandblasting devices with nozzles inserted into rotating steel pipes to sandblast and remove rust, most of these nozzles are single-outlet, making it difficult to create a large-area, diffused sandblasting effect. This often results in missed areas or spiral-shaped spray marks inside the pipe, affecting the rust removal efficiency. Furthermore, if the steel pipe is long, a nozzle inserted from one end cannot penetrate the entire pipe to achieve complete rust removal of the inner wall, requiring the pipe to be turned around and sandblasted from the other end, further reducing work efficiency. There is a need for a steel pipe inner wall rust removal device that can simultaneously provide large-area, diffused sandblasting from both ends of the steel pipe to improve the rust removal effect and work efficiency. Therefore, this project was developed. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model discloses a steel pipe inner wall rust removal device, including a spraying assembly (1), a swivel tube assembly (2), and a base plate (3). The spraying assembly (1) consists of two sets and is symmetrically placed at both ends of the steel pipe to be rusted. The spraying pipe (11) of the spraying assembly (1) has a hollow spraying head with a parabolic shape at one end of its delivery pipe. Several spraying holes (111) are distributed on the spraying head. The spraying pipe (11) is rotatably connected to the support pipe (12). The spraying pipe (11) can be inserted into the steel pipe to be rusted and rotated, and can be axially moved by the support pipe (12). The swivel tube assembly (2) consists of several sets and is placed below the steel pipe to be rusted. It can support the steel pipe to be rusted and drive the steel pipe to rotate. This utility model utilizes several spray holes (111) on the parabolic hollow spray head of the spray pipe (11) of the spray assembly (1) to simultaneously spray sand particles onto the inner wall of the steel pipe at different spray angles. The spray pipe (11) can move and rotate axially, and the rotating pipe assembly (2) drives the steel pipe to rotate in the opposite direction, so that the spray assembly (1) can perform diffuse sandblasting and rust removal on the inner wall of the steel pipe. By using two sets of spray assemblies (1) placed at both ends of the steel pipe, rust can be removed from both ends of the steel pipe simultaneously, thereby improving the rust removal effect and work efficiency of the inner wall of the steel pipe.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A steel pipe inner wall rust removal device includes a base plate (3), characterized in that: it further includes a spraying assembly (1) and a swivel assembly (2). The spraying assembly (1) is provided with a tubular spraying component, a moving component and a rotating component. A parabolic spraying head is provided at one end of the tubular spraying component and a plurality of spraying nozzles for spraying sand particles are provided on the spraying head. The moving component and the rotating component of the spraying assembly (1) can drive the spraying component to move and rotate. The swivel assembly (2) is provided with a supporting rotating component, which can support the steel pipe to be derusted and drive the steel pipe to rotate. The swivel assembly (2) is provided with a plurality of groups, and the plurality of groups of swivel assemblies (2) are placed below the steel pipe to be derusted. The spraying assembly (1) is provided with two groups, and the two groups of spraying assemblies (1) are symmetrically placed at both ends of the steel pipe to be derusted. After the spraying component of the spraying assembly (1) moves, it can be inserted into the steel pipe and can rotate inside the steel pipe. The spraying assembly (1) and the swivel assembly (2) are both connected above the base plate (3).

[0006] The spray assembly (1) includes a spray pipe (11), a support pipe (12), and a guide key (13). The spray pipe (11) is a hollow component with a parabolic-shaped hollow spray head at one end of a circular hollow conveying pipe. The conveying pipe can convey high-pressure sand flow. Several spray holes (111) are distributed on the spray head. The support pipe (12) is a hollow circular tube. The conveying pipe of the spray pipe (11) is placed inside the support pipe (12) and is rotatably connected to the support pipe (12) by a bearing installed inside the support pipe (12). The spray pipe (11) can rotate but cannot slide inside the support pipe (12). The spray head end and the other end away from the spray head of the spray pipe (11) both extend to the outside of the support pipe (12). The guide key (13) is arranged along the axial direction of the support pipe (12) below the outer wall of the support pipe (12) and is fixedly connected to the support pipe (12).

[0007] Furthermore, the injection hole (111) is a through hole, and its outward end is funnel-shaped.

[0008] The spray assembly (1) further includes a first support (14), a second support (15), and a linear module (16). The first support (14) and the second support (15) are respectively placed at both ends of the support tube (12). The upper part of the first support (14) is provided with a circular hole and a sliding groove on the circular hole. The first support (14) is movably sleeved on the support tube (12) and the guide key (13) and can slide along the axial direction of the support tube (12) but cannot rotate. The bottom of the first support (14) is fixed. The second support (15) is attached to the base plate (3). The upper part of the second support (15) is provided with a round hole and fixed to the support tube (12). The linear module (16) is placed below the second support (15) and arranged along the axial direction of the support tube (12). The bottom of the second support (15) is locked on the slider of the linear module (16). The linear module (16) can drive the second support (15) to move the support tube (12) and the spray pipe (11) along the axial direction of the support tube (12).

[0009] The spraying assembly (1) further includes a rotary cylinder (17) and a rotary joint (18). The rotary cylinder (17) and the rotary joint (18) are both located at the end of the spraying pipe (11) away from the spray head. The rotary cylinder (17) is fixed to the outer wall of the spraying pipe (11) and can drive the spraying pipe (11) to rotate. One end of the rotary joint (18) is connected to the end of the spraying pipe (11) and communicates with the inner cavity of the spraying pipe (11). The other end of the rotary joint (18) is connected to an external sandblasting machine.

[0010] The swivel assembly (2) includes a drive wheel (21), a driven wheel (22), and a support (23). The support (23) is U-shaped. The drive wheel (21) and the driven wheel (22) are respectively placed on the upper part of the left and right sides of the support (23) and are rotatably connected to the support (23). The outer surfaces of the drive wheel (21) and the driven wheel (22) are covered with a rubber layer to increase friction. The steel pipe to be derusted can be placed and pressed on the drive wheel (21) and the driven wheel (22). The drive wheel (21) is equipped with a motor, which can drive the steel pipe to be derusted to rotate. The rotation direction of the steel pipe can be opposite to that of the spray pipe (11).

[0011] As can be seen from the above description, the beneficial effects of the steel pipe inner wall rust removal device provided by this utility model are as follows: the spraying assembly (1) is set into two groups and symmetrically placed at both ends of the steel pipe to be rusted. The spraying pipe (11) of the spraying assembly (1) has a hollow spraying head with a parabolic shape at one end of its conveying pipe, and a number of spraying holes (111) are distributed on the spraying head. The rotating pipe assembly (2) is provided with a driving wheel (21) and a driven wheel (22) that can support and drive the steel pipe to rotate. First, the spray assembly (1) utilizes several spray holes (111) on the parabolic hollow spray head of the spray pipe (11) to simultaneously spray sand particles onto the inner wall of the steel pipe at different spray angles. The spray pipe (11) can move and rotate axially, and the rotating pipe assembly (2) drives the steel pipe to rotate in the opposite direction, enabling the spray assembly (1) to perform diffuse sandblasting and rust removal on the inner wall of the steel pipe, thus improving the rust removal effect. Second, the invention utilizes two sets of spray assemblies (1) placed at both ends of the steel pipe to simultaneously remove rust from both ends, improving the efficiency of rust removal on the inner wall of the steel pipe. This utility model has a reasonable design, simple structure, low cost, and is easy to promote. Attached Figure Description

[0012] Figure 1 This is a general schematic diagram of a steel pipe inner wall rust removal device according to the present invention;

[0013] Figure 2 for Figure 1 A magnified diagram of AA in the image;

[0014] Figure 3 This is an enlarged schematic diagram of the injection assembly;

[0015] Figure 4 for Figure 3 A magnified diagram of BB in the image;

[0016] Figure 5 This is an enlarged schematic diagram of the injection nozzle;

[0017] Figure 6 for Figure 5 Enlarged schematic diagram of part C in the diagram;

[0018] Figure 7 This is an enlarged schematic diagram of the guide key fixed to the support tube.

[0019] Figure label:

[0020] 1. Injection assembly (1); 11. Injection pipe (11); 111. Injection hole (111); 12. Support pipe (12); 13. Guide key (13); 14. First support (14); 15. Second support (15); 16. Linear module (16); 17. Rotary cylinder (17); 18. Rotary joint (18); 2. Rotary tube assembly (2); 21. Drive wheel (21); 22. Driven wheel (22); 23. Support (23); 3. Base plate (3). Detailed Implementation

[0021] The present invention will be further described below through specific embodiments.

[0022] like Figure 1 As shown, the present invention provides a steel pipe inner wall rust removal device, including a spraying assembly (1), a swivel assembly (2), and a base plate (3). The spraying assembly (1) is provided with a tubular spraying component, a moving component, and a rotating component. A parabolic spraying head is provided at one end of the tubular spraying component, and several spraying nozzles for spraying sand particles are provided on the spraying head. The moving component and the rotating component of the spraying assembly (1) can drive the spraying component to move and rotate. The swivel assembly (2) is provided with a supporting rotating component, which can support the steel pipe to be derusted on the inner wall and drive the steel pipe to rotate. The swivel assembly (2) is provided with several groups, and the several groups of swivel assemblies (2) are placed below the steel pipe to be derusted. The spraying assembly (1) is provided with two groups, and the two groups of spraying assemblies (1) are symmetrically placed at both ends of the steel pipe to be derusted. After the spraying component of the spraying assembly (1) moves, it can be inserted into the steel pipe and can rotate inside the steel pipe. The spraying assembly (1) and the swivel assembly (2) are both connected above the base plate (3).

[0023] like Figure 1 , Figures 3 to 7As shown, the spray assembly (1) of this utility model includes a spray pipe (11), a support pipe (12), a guide key (13), a first support (14), a second support (15), a linear module (16), a rotary cylinder (17), and a rotary joint (18). The spray pipe (11) is a hollow component with a parabolic-shaped hollow spray head at one end of a circular hollow conveying pipe. The conveying pipe can transport high-pressure sand flow, and a plurality of spray holes (111) are distributed on its spray head. The support pipe ( 12) is a hollow cylindrical tube. The delivery pipe of the injection pipe (11) is placed inside the support pipe (12) and is rotatably connected to the support pipe (12) by a bearing installed inside the support pipe (12). The injection pipe (11) can rotate but cannot slide inside the support pipe (12). The injection head end and the other end away from the injection head of the injection pipe (11) both extend to the outside of the support pipe (12). The guide key (13) is arranged along the axial direction of the support pipe (12) below the outer wall of the support pipe (12) and is fixedly connected to the support pipe (12). The injection hole (111) is a through hole, and its outward end is trumpet-shaped. The first support (14) and the second support (15) are respectively placed at both ends of the support tube (12). The upper part of the first support (14) is provided with a round hole and a sliding groove on the round hole. The first support (14) is movably sleeved on the support tube (12) and the guide key (13) and can slide along the axial direction of the support tube (12) but cannot rotate. The bottom of the first support (14) is fixed to the base plate (3). The upper part of the second support (15) is provided with a round hole and fixed to the support tube (12). The linear module (16) is placed below the second support (15) and arranged along the axial direction of the support tube (12). The bottom of the second support (15) is locked on the slider of the linear module (16). The linear module is a known technology. The linear module (16) can drive the second support (15) to drive the support tube (12) and the spray pipe (11) to move along the axial direction of the support tube (12). The rotary cylinder (17) and rotary joint (18) are both located at the end of the spray pipe (11) away from the spray head. The rotary cylinder (17) is fixed to the outer wall of the spray pipe (11) and can drive the spray pipe (11) to rotate. The rotary cylinder is a known technology. In this embodiment, the rotary cylinder (17) is a rotary cylinder with a through hole in the center. One end of the rotary joint (18) is connected to the end of the spray pipe (11) and communicates with the inner cavity of the spray pipe (11). The other end of the rotary joint (18) is connected to an external sandblasting machine. The rotary joint is a known technology.

[0024] like Figures 1 to 3As shown, the swivel tube assembly (2) of this utility model includes a drive wheel (21), a driven wheel (22), and a support (23). The support (23) is U-shaped. The drive wheel (21) and the driven wheel (22) are respectively placed on the upper part of the left and right sides of the support (23) and are rotatably connected to the support (23). The outer surfaces of the drive wheel (21) and the driven wheel (22) are covered with a rubber layer to increase friction. The steel pipe to be derusted can be placed and pressed on the drive wheel (21) and the driven wheel (22). The drive wheel (21) is equipped with a motor, which can drive the steel pipe to be derusted to rotate. The rotation direction of the steel pipe can be opposite to that of the spray pipe (11).

[0025] The method of using the steel pipe inner wall rust removal device of this utility model is as follows:

[0026] The steel pipe to be derusted is placed on the drive wheel (21) and driven wheel (22) of the swivel tube assembly (2), and positioned between two symmetrically arranged spraying assemblies (1); the linear modules (16), rotary cylinders (17), and sandblasting machines connected to the outside of the two spraying assemblies (1) are started, so that the linear modules (16) at both ends drive their corresponding second supports (15) to drive the corresponding support pipes (12) and spraying pipes (11) to move continuously from the opening of the steel pipe to the middle of the steel pipe and rotate continuously, thus sandblasting. The high-pressure sand flow provided by the machine is sent into the parabolic hollow spray head through the delivery pipe of the spray pipe (11), and dispersed sand particles are sprayed onto the inner wall of the steel pipe through several spray holes (111) with different spray angles on the spray head. At the same time as the spray assembly (1) is started, the motor on the drive wheel (21) of the swivel assembly (2) is started. The steel pipe will also rotate in the opposite direction under the action of friction between the drive wheel (21) and the driven wheel (22) to further improve the rust removal effect of the inner wall of the steel pipe.

[0027] This invention sets up two spraying components (1) and symmetrically places them at both ends of the steel pipe to be derusted. The spraying pipe (11) of the spraying component (1) has a hollow spraying head with a parabolic shape at one end of its conveying pipe, and several spraying holes (111) are distributed on the spraying head. The rotating pipe assembly (2) is provided with a driving wheel (21) and a driven wheel (22) that can support and drive the steel pipe to rotate. The spraying pipe (11) of the spraying component (1) with several spraying holes (111) on the parabolic hollow spraying head simultaneously sprays sand particles onto the inner wall of the steel pipe at different spraying angles. The spraying pipe (11) can move and rotate axially, and the rotating pipe assembly (2) drives the steel pipe to rotate in the opposite direction, so that the spraying component (1) can perform diffuse sandblasting to remove rust from the inner wall of the steel pipe. The two sets of spraying components (1) placed at both ends of the steel pipe can remove rust from both ends of the steel pipe simultaneously, thereby improving the rust removal effect and work efficiency of the inner wall of the steel pipe.

[0028] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A rust removal device for the inner wall of a steel pipe, comprising a base plate (3), characterized in that: It also includes a spraying assembly (1) and a swirl assembly (2). The spraying assembly (1) is provided with a tubular spraying component, a moving component and a rotating component. At one end of its tubular spraying component is a parabolic spraying head and several spray nozzles that can spray sand particles. The moving component and the rotating component of the spraying assembly (1) can drive the spraying component to move and rotate. The swirl assembly (2) is provided with a supporting rotating component, which can support the steel pipe to be derusted on the inner wall and drive the steel pipe to rotate. The swirl assembly (2) is provided with several groups, and the several groups of swirl assemblies (2) are placed below the steel pipe to be derusted. The spraying assembly (1) is provided with two groups, and the two groups of spraying assemblies (1) are symmetrically placed at both ends of the steel pipe to be derusted. The spraying assembly (1) and the swirl assembly (2) are both connected above the base plate (3).

2. The steel pipe inner wall rust removal device according to claim 1, characterized in that: The spray assembly (1) includes a spray pipe (11), a support pipe (12), and a guide key (13). The spray pipe (11) is a hollow component with a parabolic-shaped hollow spray head at one end of a circular hollow conveying pipe. Several spray holes (111) are distributed on its spray head. The support pipe (12) is a hollow circular tube. The conveying pipe of the spray pipe (11) is placed inside the support pipe (12) and is rotatably connected to the support pipe (12). The spray head end and the other end away from the spray head of the spray pipe (11) both extend to the outside of the support pipe (12). The guide key (13) is arranged below the outer wall of the support pipe (12) and is fixedly connected to the support pipe (12).

3. The steel pipe inner wall rust removal device according to claim 2, characterized in that: The injection hole (111) is a through hole, and its outward end is funnel-shaped.

4. A rust removal device for the inner wall of a steel pipe according to claim 2, characterized in that: The spray assembly (1) further includes a first support (14), a second support (15), and a linear module (16). The first support (14) and the second support (15) are respectively placed at both ends of the support tube (12). The first support (14) is movably sleeved on the support tube (12) and the guide key (13) and can slide along the axial direction of the support tube (12). The bottom of the first support (14) is fixed to the base plate (3). The upper part of the second support (15) is fixed to the support tube (12). The linear module (16) is placed below the second support (15) and arranged along the axial direction of the support tube (12). The bottom of the second support (15) is locked on the slider of the linear module (16).

5. A rust removal device for the inner wall of a steel pipe according to claim 4, characterized in that: The spray assembly (1) further includes a rotary cylinder (17) and a rotary joint (18). The rotary cylinder (17) and the rotary joint (18) are both located at the end of the spray pipe (11) away from the spray head. The rotary cylinder (17) is fixed to the outer wall of the spray pipe (11) and can drive the spray pipe (11) to rotate. The rotary joint (18) is connected to the end of the spray pipe (11) and communicates with the inner cavity of the spray pipe (11).

6. A rust removal device for the inner wall of a steel pipe according to claim 5, characterized in that: The swivel assembly (2) includes a drive wheel (21), a driven wheel (22) and a support (23). The drive wheel (21) and the driven wheel (22) are respectively placed on both sides of the support (23) and are rotatably connected to the support (23). The drive wheel (21) is equipped with a motor, which can drive the steel pipe to be derusted to rotate.

Images