A hand-held sandblasting device

Abstract

The utility model discloses a handheld sand blasting equipment, including the sand blasting pot body of sliding sleeve in pipe spare, and pipe spare is rotatable to set up relative to sand blasting pot body, is equipped with the sand blasting nozzle of connecting feed pipe in sand blasting pot body, and is equipped with the gyro wheel support component of rolling contact with the outer wall of pipe spare on sand blasting pot body, gyro wheel support component is used for supporting sand blasting pot body and assisting its along pipe spare sliding. Adopt the sand blasting pot body of this technical scheme and can cover the full axial length of pipe spare when sliding along the axial direction, and the pipe spare can drive the sand blasting area of pipe circumference surface sustained into the pot body when doing the circumferential rotation relative to sand blasting pot body, thereby cover the full circumferential direction of pipe spare, can complete the sand blasting processing of whole surface through the cooperation of pot body axial sliding and pipe circumference rotation, significantly reduced the labor intensity of operator, reduced the operation difficulty, greatly shortened single operation time, promoted production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sandblasting equipment technology, specifically to a handheld sandblasting device. Background Technology

[0002] Sandblasting, as a highly efficient surface treatment process, works by using compressed air or high-pressure liquid to accelerate abrasive particles into a high-speed jet that violently impacts the surface of the workpiece. Through this combined impact and micro-cutting action, it effectively removes rust, scale, old paint, oil, and other contaminants from the workpiece surface, while simultaneously creating a clean surface with a certain degree of roughness. This process not only significantly improves the surface cleanliness of the workpiece but, more importantly, alters its mechanical properties, increasing surface activity and specific surface area, thereby greatly enhancing the adhesion between subsequent coatings (such as paint and plating) and the substrate. This not only extends the service life of the coating but also improves paint leveling and the final decorative effect, providing crucial assurance for product quality.

[0003] Current pipe surface treatment methods still rely on manual operation of spray guns for sandblasting. A pressure source and abrasive canister are connected via a hose to treat the workpiece partially or completely. However, manual operation of the spray gun is limited by the field of view and spatial accessibility, making it difficult to ensure that the spray stream can effectively cover all surfaces to be treated. It is also impossible to precisely control the distance and angle between the spray gun and the workpiece surface, resulting in inconsistent surface roughness. This unevenness directly affects the uniformity of subsequent coating adhesion, leading to unstable production efficiency and quality control, which is detrimental to standardized production and quality management. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the limitations of the field of view and spatial accessibility in the existing technology of manual hand-held spray gun sandblasting of pipe fittings. Uneven sandblasting will affect the adhesion uniformity of subsequent coatings, and the production efficiency and quality control are unstable.

[0005] To solve the above-mentioned technical problems, this utility model provides a handheld sandblasting device, including a sandblasting pot body slidably fitted onto a pipe along its axial direction, and the pipe being rotatably disposed relative to the sandblasting pot body; the sandblasting pot body is provided with a sandblasting nozzle connected to a feed pipe, the sandblasting nozzle being used to perform sandblasting operations on the surface of the pipe; the sandblasting pot body is provided with a roller support assembly that rolls in contact with the outer wall of the pipe, the roller support assembly being used to support the sandblasting pot body and assist it in sliding along the pipe. As a preferred embodiment, the sandblasting pot body forms a closed working space, and the sandblasting pot body includes a set of through holes that penetrate its front and rear sides and connect to the working cavity, and the fitting is adapted to pass through the set of through holes.

[0006] As a preferred embodiment, the sandblasting nozzle is located at the inner top of the sandblasting pot body and has a receiving pipe extending from the top of the sandblasting pot body, and a recycling pipe is provided at the bottom of the sandblasting pot body.

[0007] As a preferred embodiment, the device also includes a guide frame disposed below the sandblasting pot body, the guide frame extending along the axial direction of the pipe, and the sandblasting pot body being connected to the guide frame via a guide rod to form a sliding fit.

[0008] As a preferred embodiment, the guide frame has a guide groove extending in the same direction as it, one end of the guide rod is fixed to the bottom of the sandblasting pot body, the other end extends and connects to the guide groove, and a limiting pin adapted to the width of the guide groove is provided at the other end of the guide rod.

[0009] As a preferred embodiment, the roller support assembly includes two outer support frames disposed opposite to each other on both sides of the sandblasting pot body, and two first rollers disposed on the two outer support frames and cooperating with the outer wall of the pipe.

[0010] As a preferred embodiment, the outer support frame consists of a horizontal support arm and a vertical support arm connected vertically. The first roller is rotatably disposed at the lower end of the vertical support arm, and the horizontal support arm has a Y-shaped structure and is fixed to the top of the sandblasting pot body.

[0011] As a preferred embodiment, the roller support assembly further includes an inner support frame disposed inside the sandblasting pot body, and a second roller disposed on the inner support frame and cooperating with the outer wall of the pipe.

[0012] As a preferred embodiment, the outer wall of the sandblasting pot is provided with a hand handle, which is arranged perpendicular to the axial direction of the pipe.

[0013] As a preferred embodiment, two connecting sleeves are provided on both sides of the sandblasting pot body at the positions of the through holes through which the pipes pass, and a buffer sealing ring is provided between the connecting sleeves and the sandblasting pot body around the through holes.

[0014] Compared with the prior art, the technical solution of this utility model has the following advantages: 1. In the handheld sandblasting equipment provided by this utility model, the sandblasting pot body can cover the entire axial length of the pipe when sliding along the pipe's axis. Simultaneously, the pipe rotates circumferentially relative to the sandblasting pot body, continuously driving the circumferential surface of the pipe into the sandblasting area within the pot body, thus covering the entire circumferential direction of the pipe. The combination of these two features enables sandblasting of the entire surface of the pipe without dead angles, ensuring thorough removal of contaminants and laying a complete surface foundation for subsequent coating adhesion. In this structure, the sandblasting pot body is fitted onto the pipe and rolls against the outer wall of the pipe through a roller support assembly, achieving precise support for the sandblasting pot body and significantly reducing frictional resistance. The operator only needs to apply slight force to push the pot body along the pipe, ensuring precise positioning and effortless operation. The coordinated sliding of the pot body along the axial direction and the circumferential rotation of the pipe body enable full-surface sandblasting, significantly reducing the operator's labor intensity and skill requirements, greatly shortening the single-operation time, reducing operational difficulty, improving production efficiency, and facilitating standardized production and quality control of products.

[0015] 2. In the handheld sandblasting device provided by this utility model, two outer support frames cooperate with two first rollers to provide rolling support on both sides of the sandblasting pot body, and the inner support frame cooperates with the second rollers to provide rolling support inside the sandblasting pot body. The three rollers together form a three-point rolling contact layout to form a stable support system, ensuring that the central axis of the sandblasting pot body always basically coincides with the central axis of the pipe, and ensuring that the sandblasting pot body moves smoothly and steadily along the axial direction of the pipe.

[0016] 3. In the handheld sandblasting equipment provided by this utility model, a buffer sealing ring is provided between the connecting sleeve and the sandblasting pot body, so that the buffer sealing ring tightly fits the outer wall of the pipe and the edge of the through hole of the sandblasting pot body. The flexible material of this buffer sealing ring can fill the tiny gap between the through hole and the pipe, strengthen the sealing, prevent sandblasting dust from overflowing, and avoid polluting the working environment. Furthermore, by replacing rigid contact with the pipe wall through the flexible contact of the buffer sealing ring, the slight impact force when the pot body slides and the pipe rotates can be absorbed by the flexible buffering effect of the buffer sealing ring, preventing the thin-walled pipe from deforming due to excessive local stress. It also works synergistically with the uniform force support of the roller bracket assembly, providing double protection for the structural and surface integrity of the pipe. Attached Figure Description

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

[0018] Figure 1A schematic diagram of the installation structure of the handheld sandblasting equipment provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the handheld sandblasting equipment shown. Figure 3 This is a three-dimensional structural diagram of the sandblasting pot body of this utility model; Figure 4 This is a cross-sectional structural diagram of the sandblasting pot body of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Sandblasting pot body; 11. Working space; 12. Through hole; 2. Sandblasting nozzle; 21. Material receiving pipe; 3. Recycling pipe; 4. Roller support assembly; 41. Outer support frame; 411. Horizontal support arm; 412. Vertical support arm; 42. First roller; 43. Inner support frame; 44. Second roller; 5. Guide frame; 51. Guide groove; 6. Guide rod; 61. Limiting pin; 7. Hand handle; 8. Connecting sleeve; 9. Buffer sealing ring; 100. Pipe fitting. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a 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 utility model based on the specific circumstances.

[0023] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Example The following is a detailed description of this embodiment with reference to the accompanying drawings: This embodiment provides, as follows: Figures 1-4The handheld sandblasting device shown includes a sandblasting pot body 1 slidably fitted onto a pipe 100 along its axial direction, and the pipe 100 is rotatably disposed relative to the sandblasting pot body 1. Specifically, the two ends of the pipe 100 are connected by a rotating mechanism, which enables the pipe 100 to be positioned and rotated relative to the sandblasting pot body 1. The rotating mechanism is preferably a rotary chuck driven by a motor. The sandblasting pot body 1 is provided with a sandblasting nozzle 2 connected to a feed pipe, and the sandblasting nozzle 2 is used to perform sandblasting operations on the surface of the pipe 100. The sandblasting pot body 1 is provided with a roller support assembly 4 that rolls in contact with the outer wall of the pipe 100. The roller support assembly 4 is used to support the sandblasting pot body 1 and assist it in sliding along the pipe 100.

[0025] In the above embodiments, the sandblasting pot 1 can cover the entire axial length of the pipe when it slides along the pipe's axis, and the pipe 100 rotates circumferentially relative to the sandblasting pot 1, which can drive the circumferential surface of the pipe to continuously enter the sandblasting area inside the pot, thereby covering the entire circumferential direction of the pipe. The combination of the two can achieve sandblasting operation without dead angles on the entire surface of the pipe, ensuring that the surface contaminants (rust, oxide scale, etc.) of the pipe are thoroughly removed, laying a complete surface foundation for subsequent coating adhesion. In this structure, the sandblasting pot 1 is fitted onto the pipe and rolls in contact with the outer wall of the pipe through the roller bracket assembly, achieving precise support for the sandblasting pot 1, greatly reducing frictional resistance. The operator only needs to apply a little force to push the pot to slide along the pipe, which is accurate in positioning and labor-saving. Through the coordinated cooperation of the axial sliding of the pot and the circumferential rotation of the pipe, full-surface sandblasting treatment can be completed, which significantly reduces the labor intensity and skill requirements of the operator, greatly shortens the single operation time, reduces the difficulty of operation, improves production efficiency, and is conducive to the standardized production and quality control of products.

[0026] For further optimization settings, refer to Figure 2 The sandblasting pot body 1 forms a closed working space 11. The sandblasting pot body 1 includes a set of through holes 12 that penetrate its front and rear sides and connect to the working cavity. The pipe fitting 100 is adapted to pass through the set of through holes 12. The sandblasting nozzle 2 is set facing the inner top of the sandblasting pot body 1 and has a receiving pipe 21 extending out of the top of the sandblasting pot body 1. With this structure, the sandblasting pot body 1 is adapted to the pipe fitting through the front and rear through holes 12, so that the sandblasting pot body 1 can be movably fitted onto the pipe fitting. The sandblasting operation on the pipe fitting is completed in the closed space of the sandblasting pot body, which can prevent abrasive splashing and dust overflow, reduce material waste, reduce dust pollution, improve the working environment, and meet environmental protection requirements.

[0027] like Figure 1-2As shown, the bottom of the sandblasting pot body 1 is equipped with a recycling pipe 3, and also includes a waste storage rack connected to the bottom of the sandblasting pot body 1. The waste storage rack is located directly below the recycling pipe 3 and is used to collect waste generated during sandblasting operations. Specifically, the bottom of the sandblasting pot body 1 is a detachable mounting base plate, and the recycling pipe 3 is mounted on the mounting base plate. This structural arrangement, through the cooperation and communication between the recycling pipe 3 and the internal working space 11 of the sandblasting pot body 1, allows the recycling pipe 3 to guide the abrasive residue, impurities on the pipe fitting surface, and other waste generated during sandblasting operations to be discharged in a directional manner, preventing waste from scattering in the working environment, maintaining site cleanliness, and reducing subsequent cleanup costs.

[0028] The following is combined with Figure 1-4 The specific setup of the roller support assembly is explained in detail: The roller support assembly 4 includes two outer support frames 41 disposed opposite to each other on both sides of the sandblasting pot body 1, and two first rollers 42 disposed on the two outer support frames 41 and cooperating with the outer wall of the pipe 100. It also includes an inner support frame 43 disposed inside the sandblasting pot body 1, and a second roller 44 disposed on the inner support frame 43 and cooperating with the outer wall of the pipe 100. The second roller 44 is located below the middle of the two first rollers 42. Specifically, the outer support frame 41 is composed of a horizontal support arm 411 and a vertical support arm 412 connected vertically. The first roller 42 is rotatably disposed at the lower end of the vertical support arm 412. The horizontal support arm 411 has a Y-shaped structure and is fixed to the top of the sandblasting pot body 1. The rollers can be spherical rollers. This structural configuration uses two outer support frames 41 and two first rollers 42 to provide rolling support on both sides of the sandblasting pot body 1, and an inner support frame 43 and a second roller 44 to provide rolling support inside the sandblasting pot body 1. The three rollers form a three-point rolling contact layout to jointly form a stable support system, ensuring that the central axis of the sandblasting pot body 1 always remains basically coincident with the central axis of the pipe, and with the guiding effect of the guide frame, ensures that the sandblasting pot body moves smoothly and steadily along the axial direction of the pipe.

[0029] In this embodiment, a guide frame 5 is also provided below the sandblasting pot body 1. The guide frame 5 extends along the axial direction of the pipe. The sandblasting pot body 1 is connected to the guide frame 5 via a guide rod 6 to form a sliding fit. Specifically, the guide frame 5 has a guide groove 51 extending in the same direction as it. One end of the guide rod 6 is fixed to the bottom of the sandblasting pot body 1, and the other end extends and connects to the guide groove 51. A limiting pin 61 adapted to the width of the guide groove 51 is provided at the other end of the guide rod 6. The limiting pin 61, adapted to the width of the guide groove 51, further restricts the left and right sway of the guide rod 6, ensuring that the sandblasting pot body 1 can only move along the axial direction. The pipe fitting moves linearly along its axis. In this structural configuration, the sandblasting pot body 1 and the guide frame 5 are connected by the guide rod 6 and the guide groove 51 to form a limiting guide fit for axial movement, thereby locking the movement trajectory of the sandblasting pot body 1 to limit the radial displacement of the sandblasting pot body. Combined with the support of the roller bracket assembly 4, a motion guiding and support structure is constructed to avoid tilting / displacement of the pot body caused by manual operation tremors or pipe rotation. This guiding structure design ensures the linearity of the axial sliding of the sandblasting pot body. Combined with the uniform rotation of the pipe fitting, the sandblasting operation covers the surface of the pipe fitting more evenly, improving the stability and reliability of long pipe fitting operations.

[0030] In a further preferred configuration, the outer wall of the sandblasting pot body 1 is provided with a hand handle 7, which is arranged perpendicular to the axial direction of the pipe fitting 100. With this structural configuration, the hand handle 7 provides an additional control anchor point for the pot body. In conjunction with the roller bracket assembly, the axial sliding speed of the pot body can be precisely controlled. In addition, the guide frame 5 guides the sandblasting pot body 1. When the operator pushes the pot body along the guide frame, the two work together to ensure that the direction of force is precisely matched with the movement trajectory of the pot body sliding along the axial direction of the pipe fitting. The pot body can be driven to move smoothly without additional adjustment of the grip angle, reducing operator fatigue and improving the efficiency of long-term operation.

[0031] like Figure 3-4 As shown, two connecting sleeves 8 are provided on both sides of the sandblasting pot body 1 at the positions of the through holes 12 through which the pipe 100 passes. A buffer sealing ring 9 is provided between the connecting sleeve 8 and the sandblasting pot body 1 around the through hole 12. This structure allows the buffer sealing ring 9 to fit tightly against the outer wall of the pipe and the edge of the through hole 12 of the sandblasting pot body 1. The flexible material of this buffer sealing ring 9 can fill the tiny gap between the through hole 12 and the pipe, strengthen the sealing, prevent sandblasting dust from overflowing, and avoid polluting the working environment. Furthermore, by replacing rigid contact with flexible contact between the buffer sealing ring 9 and the pipe wall, the flexible buffering effect of the buffer sealing ring can absorb the slight impact force when the pot body slides and the pipe rotates, preventing the thin-walled pipe from deforming due to excessive local stress. It also works synergistically with the uniform force support of the roller bracket assembly to provide double protection for the integrity of the pipe structure and surface.

[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A handheld sandblasting device, characterized in that, The device includes a sandblasting pot body (1) that is slidably fitted onto the pipe (100) along the axial direction of the pipe (100), and the pipe (100) is rotatably disposed relative to the sandblasting pot body (1); the sandblasting pot body (1) is provided with a sandblasting nozzle (2) connected to a feed pipe, and the sandblasting nozzle (2) is used to perform sandblasting operation on the surface of the pipe (100); the sandblasting pot body (1) includes a roller support assembly (4) that rolls in contact with the outer wall of the pipe (100), and the roller support assembly (4) is used to support the sandblasting pot body (1) and assist it in sliding along the pipe (100).

2. The handheld sandblasting equipment according to claim 1, characterized in that: The sandblasting pot body (1) forms a closed working space (11). The sandblasting pot body (1) includes a set of through holes (12) that penetrate its front and rear sides and connect to the working cavity. The pipe fitting (100) is adapted to pass through the set of through holes (12).

3. The handheld sandblasting equipment according to claim 2, characterized in that: The sandblasting nozzle (2) is located at the top inner part of the sandblasting pot body (1) and has a receiving pipe (21) extending out of the top of the sandblasting pot body (1). The bottom of the sandblasting pot body (1) is provided with a recycling pipe (3).

4. The handheld sandblasting equipment according to claim 3, characterized in that: It also includes a guide frame (5) disposed below the sandblasting pot body (1), the guide frame (5) extending along the axial direction of the pipe (100), and the sandblasting pot body (1) being connected to the guide frame (5) via a guide rod (6) to form a sliding fit.

5. The handheld sandblasting equipment according to claim 4, characterized in that: The guide frame (5) has a guide groove (51) extending in the same direction as it. One end of the guide rod (6) is fixed to the bottom of the sandblasting pot body (1), and the other end extends into the guide groove (51). A limiting pin (61) adapted to the width of the guide groove (51) is provided at the other end of the guide rod (6).

6. The handheld sandblasting equipment according to any one of claims 1-5, characterized in that: The roller support assembly (4) includes two outer support frames (41) disposed opposite to each other on both sides of the sandblasting pot body (1), and two first rollers (42) disposed on the two outer support frames (41) and cooperating with the outer wall of the pipe fitting (100).

7. The handheld sandblasting equipment according to claim 6, characterized in that: The outer support frame (41) consists of a horizontal support arm (411) and a vertical support arm (412) connected vertically. The first roller (42) is rotatably disposed at the lower end of the vertical support arm (412). The horizontal support arm (411) has a Y-shaped structure and is fixed to the top of the sandblasting pot body (1).

8. The handheld sandblasting equipment according to claim 6, characterized in that: The roller support assembly (4) further includes an inner support frame (43) disposed inside the sandblasting pot body (1), and a second roller (44) disposed on the inner support frame (43) and cooperating with the outer wall of the pipe (100).

9. The handheld sandblasting equipment according to claim 1, characterized in that: The outer wall of the sandblasting pot body (1) is provided with a hand handle (7), which is arranged perpendicular to the axial direction of the pipe (100).

10. The handheld sandblasting equipment according to claim 1, characterized in that: Two connecting sleeves (8) are provided on both sides of the sandblasting pot body (1) at the positions of the through holes (12) through which the pipe fittings (100) pass. A buffer sealing ring (9) is provided between the connecting sleeves (8) and the sandblasting pot body (1) around the through holes (12).

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