A sandblasting apparatus nozzle assembly with adjustable grit flow

Abstract

This utility model relates to the field of nozzle assemblies, specifically to a nozzle assembly for a sandblasting device with adjustable sand flow rate. It includes a nozzle body for sandblasting and an air pipe connector fixed to the upper end of the nozzle body. This utility model's adjustable sand flow rate nozzle assembly, through the arrangement of a first fixed plate, a first adjusting plate, limiting holes, a connecting sleeve, a second fixed plate, a second adjusting plate, and a limiting ball, allows the connecting sleeve, the second fixed plate, and the second adjusting plate to rotate within the sleeve by rotating the disc handle outside the connecting sleeve. This allows the second adjusting plate to rotate below the first adjusting plate, adjusting the size of the through groove and thus controlling the sandblasting flow rate. During rotation, the second fixed plate and the second adjusting plate move the limiting ball, which, using a spring below, rebounds and inserts into multiple limiting holes below the first fixed plate for locking, enhancing the stability of the second fixed plate after flow rate adjustment.

Description

Technical Field

[0001] This utility model relates to the field of nozzle assemblies, specifically to a nozzle assembly for a sandblasting equipment with adjustable sand flow rate. Background Technology

[0002] The nozzle assembly of a sandblasting machine is the core component of the sandblasting system. It is responsible for precisely mixing compressed air with sand particles (or abrasives) and spraying it at high speed onto the workpiece surface to achieve process objectives such as cleaning, deburring, strengthening, or surface modification. Its performance directly affects sandblasting efficiency, processing quality, and equipment lifespan.

[0003] Traditional nozzles typically use fixed-aperture nozzles and fixed abrasive supply channels, with no adjustable flow rate. For curved or irregularly shaped workpieces, it is necessary to dynamically adjust the local abrasive flow rate to avoid excessive erosion or insufficient processing. Because the flow rate of traditional nozzles is fixed, it is necessary to compensate by repeatedly adjusting the workpiece position or reducing the overall pressure.

[0004] Therefore, it is necessary to invent a sandblasting nozzle assembly with adjustable sand flow rate to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a sandblasting nozzle assembly with adjustable abrasive flow rate. By rotating the disc handle outside the connecting sleeve, the connecting sleeve, the second fixed plate, and the second adjusting plate rotate within the sleeve. The second adjusting plate rotates below the first adjusting plate, adjusting the size range of the through groove between them, thereby controlling the sandblasting flow rate. During the rotation of the second fixed plate and the second adjusting plate, a limiting ball moves, causing the limiting ball to be inserted into multiple limiting holes below the first fixed plate by a spring below, thus locking it in place. This enhances the stability of the second fixed plate after flow rate adjustment, solving the problem mentioned in the background art that traditional nozzles typically use fixed-diameter nozzles and fixed abrasive supply channels, resulting in non-adjustable flow rates. For curved or irregularly shaped workpieces, it is necessary to dynamically adjust the local abrasive flow rate to avoid excessive erosion or insufficient processing. However, because the flow rate of traditional nozzles is fixed, it is necessary to compensate by repeatedly adjusting the workpiece position or reducing the overall pressure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nozzle assembly for a sandblasting equipment with adjustable sand flow rate, comprising a nozzle body for sandblasting in a sandblasting equipment;

[0007] An air pipe connector is fixed to the upper end of the nozzle body. A sand pipe connector is fixedly connected to the outside of the nozzle body. A fixing hole is fixedly provided on the outside of the nozzle body.

[0008] A sleeve is threadedly connected to the outside of the nozzle body below. The sleeve has internal threads and a sealing ring is embedded in its inner wall. A first fixing plate is fixedly connected inside the sleeve, and a first adjusting plate is fixedly connected inside the first fixing plate. Limiting holes are opened on the lower outer side of the first fixing plate. A connecting sleeve is slidably connected inside the sleeve. A second fixing plate is fixedly connected inside the connecting sleeve, and a second adjusting plate is fixedly connected inside the second fixing plate. A disc handle is fixedly connected to the outside of the connecting sleeve.

[0009] The fixing sleeves are all fixed to the outside of the second fixing plate. The fixing sleeves have a limiting groove inside, and a limiting block is slidably connected inside the limiting groove. A limiting ball is fixedly connected to the upper end of the limiting block, and a spring is fixedly installed below the limiting block.

[0010] Preferably, the sleeve has a groove inside, and a slider is fixedly connected to the lower part of the connecting sleeve, so that the connecting sleeve and the sleeve can slide in a limited manner.

[0011] Preferably, the surfaces of the first adjusting plate and the second adjusting plate are provided with through grooves, and the through grooves between the first adjusting plate and the second adjusting plate are connected.

[0012] Preferably, the first adjusting plate abuts against the second adjusting plate, and the second adjusting plate is rotatably connected to the sleeve.

[0013] Preferably, the limiting ball is movably engaged with the lower limiting hole of the first fixing plate, and the limiting hole is distributed in a ring array below the first fixing plate.

[0014] Preferably, the disc handle is rotatably connected to the connecting sleeve and the sleeve, and anti-slip protrusions are fixedly connected to the outside of the disc handle.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This invention, through the arrangement of a first fixed plate, a first adjusting plate, a limiting hole, a connecting sleeve, a second fixed plate, a second adjusting plate, and a limiting ball, can adjust the flow rate of sand particles. When it is necessary to adjust the sandblasting flow rate, by rotating the disc handle on the outside of the connecting sleeve, the connecting sleeve, the second fixed plate, and the second adjusting plate rotate inside the sleeve, allowing the second adjusting plate to rotate below the first adjusting plate, adjusting the size range of the through groove, thereby adjusting the sandblasting flow rate. During the rotation of the second fixed plate and the second adjusting plate, the limiting ball will move, causing the limiting ball to be inserted into multiple limiting holes below the first fixed plate by the spring below for limiting and locking, thereby enhancing the stability of the second fixed plate after the flow rate is adjusted. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the sleeve and connecting sleeve structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the sleeve structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the connecting sleeve of this utility model;

[0022] Figure 5 This is a schematic diagram of the limiting ball structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Nozzle body; 2. Air pipe connector; 3. Sand pipe connector; 4. Fixing hole; 5. Sleeve; 6. Internal thread; 7. Sealing ring; 8. First fixing plate; 9. First adjusting plate; 10. Limiting hole; 11. Slide groove; 12. Connecting sleeve; 13. Second fixing plate; 14. Slider; 15. Second adjusting plate; 16. Fixing sleeve; 17. Limiting groove; 18. Limiting block; 19. Limiting ball; 20. Spring; 21. Disc handle. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-5 The present invention relates to a nozzle assembly for a sandblasting equipment with adjustable sand flow rate, comprising a nozzle body 1 for sandblasting by the sandblasting equipment;

[0027] Air pipe connector 2 is fixed to the upper end of nozzle body 1. Sand pipe connector 3 is fixedly connected to the outside of nozzle body 1. Fixing hole 4 is fixedly provided on the outside of nozzle body 1.

[0028] Sleeve 5 is threadedly connected to the lower exterior of nozzle body 1. Internal threads 6 are provided inside sleeve 5. Sealing rings 7 are embedded in the inner wall of sleeve 5. A first fixing plate 8 is fixedly connected inside sleeve 5. A first adjusting plate 9 is fixedly connected inside the first fixing plate 8. Limiting holes 10 are provided on the lower exterior of the first fixing plate 8. A connecting sleeve 12 is slidably connected inside sleeve 5. A second fixing plate 13 is fixedly connected inside the connecting sleeve 12. A second adjusting plate 15 is fixedly connected inside the second fixing plate 13. A disc handle 21 is fixedly connected to the outside of the connecting sleeve 12.

[0029] The fixed sleeves 16 are all fixed to the outside of the second fixed plate 13. The fixed sleeve 16 has a limiting groove 17 inside. The limiting groove 17 is slidably connected to the limiting block 18. The upper end of the limiting block 18 is fixedly connected to the limiting ball 19. The lower part of the limiting block 18 is fixedly provided with a spring 20. By rotating the disc handle 21 outside the connecting sleeve 12, the connecting sleeve 12, the second fixed plate 13 and the second adjusting plate 15 are rotated in the sleeve 5. The second adjusting plate 15 is rotated below the first adjusting plate 9 to adjust the size range of the through groove, thereby completing the sandblasting flow rate. During the rotation of the second fixed plate 13 and the second adjusting plate 15, the limiting ball 19 will move, so that the limiting ball 19 is rebounded by the spring 20 below and inserted into the multiple limiting holes 10 below the first fixed plate 8 for limiting and locking, thereby enhancing the stability of the second fixed plate 13 after the flow rate is adjusted.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, a groove 11 is provided inside the sleeve 5, and a slider 14 is fixedly connected to the lower part of the connecting sleeve 12. The connecting sleeve 12 slides in a limited position with the sleeve 5. When the connecting sleeve 12 slides in a limited position within the sleeve 5 through the slider 14, the limited sliding of the connecting sleeve 12 within the sleeve 5 is strengthened, and the stability of the connecting sleeve 12 during rotation is improved.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, the first adjusting plate 9 and the second adjusting plate 15 have through grooves on their surfaces. The through grooves of the first adjusting plate 9 and the second adjusting plate 15 are connected. When the second adjusting plate 15 rotates, the through groove inside it will overlap with or cover half of the through groove inside the first adjusting plate 9, thereby controlling the flow rate of sandblasting.

[0032] like Figure 2 , Figure 3 and Figure 4As shown, the first adjusting plate 9 and the second adjusting plate 15 abut against each other, and the second adjusting plate 15 is rotatably connected to the sleeve 5. The first adjusting plate 9 and the second adjusting plate 15 abut against each other to enhance the sealing between them. The first adjusting plate 9 and the sleeve 5 are fixedly connected. The second adjusting plate 15 can rotate and move through the rotating connecting sleeve 12, thereby adjusting the sandblasting flow rate.

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, the limiting ball 19 is movably engaged with the lower limiting hole 10 of the first fixed plate 8. The limiting holes 10 are arranged in a ring array below the first fixed plate 8. When the connecting sleeve 12 is rotated, it drives the second fixed plate 13 and the four sets of limiting balls 19 above to move. Since the limiting ball 19 is a sphere, it will expand and contract by squeezing the spring 20 below the limiting ball 19 during rotation. Thus, when the connecting sleeve 12 is rotated, it will disengage from the lower limiting hole 10 of the first fixed plate 8. After the flow rate is adjusted, the connecting sleeve 12 is stopped from rotating. The limiting ball 19 rebounds through the lower spring 20, locking the limiting ball 19 in the lower limiting hole 10 of the first fixed plate 8.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the disc handle 21 is rotatably connected to the connecting sleeve 12 and the sleeve 5. Anti-slip protrusions are fixedly connected to the outside of the disc handle 21. The multiple anti-slip protrusions on the outside of the disc handle 21 facilitate the operator to rotate the disc handle 21 and the connecting sleeve 12 inside the sleeve 5 to adjust the flow rate.

[0035] The working principle of this practical application is as follows: First, connect the air pipe connector 2 and the sand pipe connector 3 to the air pipe and sand pipe of the sandblasting equipment, respectively. Then, connect the sleeve 5 to the lower exterior of the nozzle body 1 via a threaded connection. Next, sand is fed into the nozzle body 1 through the sand pipe connector 3. Then, the air pressure ejected from the air pipe connector 2 forces the sand out of the connecting sleeve 12 at the front of the nozzle body 1. When adjusting the flow rate, rotate the disc handle 21 on the outside of the connecting sleeve 12, causing the connecting sleeve 12, the second fixed plate 13, and the second adjusting plate 15 to rotate within the sleeve 5. This allows the second adjusting plate 15 to rotate below the first adjusting plate 9, thus adjusting the flow rate. The overlap and obstruction range of the through-slots between the first and second adjusting plates 9 and 15 determine the flow rate of the sandblasting. The sand is then sprayed out through the gap between the overlapping through-slots. During the rotation of the second fixed plate 13 and the second adjusting plate 15, the limiting ball 19 is squeezed out of the limiting hole 10 below the first fixed plate 8. When the flow rate is adjusted, the limiting ball 19 is pushed into the multiple limiting holes 10 below the first fixed plate 8 by the spring 20 below it to lock and enhance the stability of the second fixed plate 13 after the flow rate is adjusted. In this way, the use of the nozzle assembly of the sandblasting equipment with adjustable sand flow rate is completed.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A nozzle assembly for a sandblasting device with adjustable sand flow rate, characterized in that: Includes a nozzle body (1), used for sandblasting in sandblasting equipment; An air pipe connector (2) is fixed to the upper end of the nozzle body (1). A sand pipe connector (3) is fixedly connected to the outside of the nozzle body (1). A fixing hole (4) is fixedly provided on the outside of the nozzle body (1). A sleeve (5) is threadedly connected to the outside of the nozzle body (1) below. The sleeve (5) is provided with internal threads (6). A sealing ring (7) is embedded in the inner wall of the sleeve (5). A first fixing plate (8) is fixedly connected inside the sleeve (5). A first adjusting plate (9) is fixedly connected inside the first fixing plate (8). Limiting holes (10) are provided on the outside of the bottom of the first fixing plate (8). A connecting sleeve (12) is slidably connected inside the sleeve (5). A second fixing plate (13) is fixedly connected inside the connecting sleeve (12). A second adjusting plate (15) is fixedly connected inside the second fixing plate (13). A disc handle (21) is fixedly connected to the outside of the connecting sleeve (12). The fixing sleeves (16) are all fixed on the outside of the second fixing plate (13). The fixing sleeves (16) have a limiting groove (17) inside. The limiting groove (17) is slidably connected to a limiting block (18). The upper end of the limiting block (18) is fixedly connected to a limiting ball (19). A spring (20) is fixedly provided below the limiting block (18).

2. The nozzle assembly of a sandblasting device with adjustable sand flow rate according to claim 1, characterized in that: The sleeve (5) has a groove (11) inside, and a slider (14) is fixedly connected to the bottom of the connecting sleeve (12). The connecting sleeve (12) and the sleeve (5) slide in a limited manner.

3. The nozzle assembly of a sandblasting device with adjustable sand flow rate according to claim 1, characterized in that: The first adjusting plate (9) and the second adjusting plate (15) have through grooves on their surfaces, and the through grooves between the first adjusting plate (9) and the second adjusting plate (15) are connected.

4. The nozzle assembly of a sandblasting device with adjustable sand flow rate according to claim 1, characterized in that: The first adjusting plate (9) abuts against the second adjusting plate (15), and the second adjusting plate (15) is rotatably connected to the sleeve (5).

5. The nozzle assembly of a sandblasting device with adjustable sand flow rate according to claim 1, characterized in that: The limiting ball (19) is movably engaged with the lower limiting hole (10) of the first fixing plate (8), and the limiting hole (10) is arranged in a ring array below the first fixing plate (8).

6. The nozzle assembly of a sandblasting device with adjustable sand flow rate according to claim 1, characterized in that: The disc handle (21) is rotatably connected to the connecting sleeve (12) and the sleeve (5), and anti-slip protrusions are fixedly connected to the outside of the disc handle (21).

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