Sand blasting opening of sand shooting mechanism

Abstract

The utility model relates to the technical field of sand blasting machines, and discloses a sand blasting port of a sand blasting mechanism, which comprises a sand blasting shell, an end cover is fixed at the top end of the sand blasting shell through a bolt, a driving structure for pressurizing sand grains and airflow is arranged in the end cover, an air inlet pipe is arranged in the middle of the end cover, and an air outlet pipe is arranged in the middle of the end cover. An anti-blocking structure is arranged in the air inlet pipe, a sand inlet pipe is arranged on the outer side of the end cover, a sand blasting pipe is fixed to the bottom end of the sand blasting shell, a sand blasting opening is formed in the sand blasting pipe, a sand outlet bent pipe is fixed to the bottom end of the sand inlet pipe, and a support is fixed to the interior of the sand blasting shell. According to the sand blasting opening of the sand shooting mechanism, the air inlet pipe is connected with the external air compressor, air flow can be conveyed into the air inlet pipe, the sand inlet pipe is connected with the abrasive material pipe of the sand blasting machine, sand grains can be conveyed into the sand inlet pipe, and the sand blasting opening can be prevented from being blocked in the process that the air flow and the sand grains are pressurized and sprayed out.

Description

Technical Field

[0001] The utility model relates to the technical field of sandblasting machines, and particularly relates to a sandblasting port of a sand shooting mechanism. Background Technique

[0002] A sandblasting machine uses compressed air in a pipeline to transport powdery particles (with a diameter of 1-4 mm) from one place to another. During the process of converting kinetic energy into potential energy, the high-speed moving sand grains scour the surface of an object, achieving the effect of improving the surface quality of the object.

[0003] The utility model patent with the application number CN202222709243.5 discloses a sandblasting port of a sandblasting machine, which includes a seat shell and a gas guide bushing; Seat shell: An air inlet spray pipe is arranged in the inner cavity, and an end cover is fixed on the outer side of the upper end of the air inlet spray pipe. The end cover is closed at one end of the seat shell, and a feed pipe is arranged in the middle of the end cover; Gas guide bushing: It is sleeved on the outside of the air inlet spray pipe, and the chamber of the seat shell below the gas guide bushing is communicated with the feed pipe through a spiral groove on the gas guide bushing; It also includes an outlet pipe, which is arranged at the other end of the end cover, and the outlet pipe and the air inlet spray pipe are coaxial.

[0004] In the above patent structure, gas enters through the air inlet spray pipe, sand grains enter through the feed pipe, and the mixture of air flow and sand grains is ejected through the outlet pipe. However, during the sandblasting process, the sand grains are very likely to block the sandblasting port, reducing the sandblasting effect. At the same time, when the above patent structure mixes sand grains and air flow, when it is necessary to change the ejection power of sand grains and air flow, the pressure is mostly changed before the sand grains and air flow enter the sandblasting port, and there is no function of increasing the pressure on the sand grains and air flow when they enter the inside of the sandblasting port. This will also result in a lower ejection power of sand grains and air flow, further reducing the sandblasting effect. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a sandblasting port of a sand shooting mechanism, which solves the problems that when a sandblasting machine is in use, it is inconvenient to prevent the sandblasting port from being blocked and inconvenient to increase the pressure of the ejected sand grains and air flow again for ejection.

[0006] To achieve the purpose of facilitating the prevention of blockage of the sandblasting port and facilitating the re-pressurization and ejection of the ejected sand grains and air flow when the above sandblasting machine is in use, the utility model provides the following technical solution: A sandblasting port of a sand shooting mechanism, which includes a sandblasting shell, the top of the sandblasting shell is fixed with an end cover through bolts, a driving structure for pressurizing sand grains and air flow is arranged inside the end cover, an air inlet pipe is arranged in the middle of the end cover, an anti-blocking structure is arranged inside the air inlet pipe, a sand inlet pipe is arranged on the outside of the end cover, the bottom of the sandblasting shell is fixed with a sandblasting pipe, a sandblasting port is opened inside the sandblasting pipe, the bottom end of the sand inlet pipe is fixed with a sand outlet elbow pipe, and a support is fixed inside the sandblasting shell.

[0007] The driving structure includes a motor, the motor is installed on the end cover, a driving gear disc is fixed on the output end of the motor, a driving groove is provided on the air inlet pipe and the sand inlet pipe, an inner rotating ring is rotated inside the driving groove on one side of the air inlet pipe, an outer rotating ring is rotated inside the driving groove on one side of the sand inlet pipe, an inner rotating shaft is arranged inside the air inlet pipe, an inner conveying sheet is fixed on the surface of the inner rotating shaft, an outer rotating shaft is arranged inside the sand inlet pipe, an outer conveying sheet is fixed on the surface of the outer rotating shaft, a sand inlet groove is provided on the sand outlet bent pipe, a sand inlet driven ring is rotated inside the sand inlet groove, a driven shaft is arranged inside the sand outlet bent pipe, a driven conveying sheet is fixed on the surface of the driven shaft, and a universal joint is installed between the outer rotating shaft and the driven shaft;

[0008] The anti-blocking structure includes an air intake groove, which is opened at the lower part of the air intake pipe. An air intake driven rotating ring rotates inside the air intake groove. An annular wave groove is opened on the inner wall of the air intake pipe. A three-head rod is arranged below the inner rotating shaft. A sliding pin is fixed to one end of the outer side of the three-head rod, a spline shaft is fixed to the top end of the three-head rod, and a clearing rod is fixed to the bottom end of the three-head rod.

[0009] Preferably, the tops of the air inlet pipe and the sand inlet pipe are fixedly connected to the sandblasting shell, the bottom end of the air inlet pipe is fixedly connected to the sand outlet elbow pipe, and the sand outlet elbow pipe is fixedly connected to the sandblasting pipe, the bottom end of the sand inlet pipe is fixedly connected to the sandblasting pipe, and the middle parts of the air inlet pipe and the sand inlet pipe are fixedly connected to the sandblasting shell through a bracket.

[0010] Preferably, tooth grooves are formed on the outer surfaces of the inner rotating ring and the outer rotating ring, and the driving gear disc is meshed with the inner rotating ring and the outer rotating ring on both sides through the tooth grooves.

[0011] Preferably, the top end of the inner conveying sheet is fixedly connected to the inner rotating ring, and the bottom end of the inner conveying sheet is fixedly connected to the air intake driven rotating ring.

[0012] Preferably, the top end of the outer conveying sheet is fixedly connected to the outer rotating ring, the outer rotating shaft is drivingly connected to the driven shaft through a universal joint, and the bottom end of the driven conveying sheet is fixedly connected to the sand feeding driven rotating ring.

[0013] Preferably, the surface of the annular wave groove is concave-convex, and the sliding pin is arranged inside the annular wave groove and is slidably connected to the annular wave groove.

[0014] Preferably, a spline groove is formed at the bottom end of the inner rotating shaft, and a spring is arranged inside the spline groove, the spline shaft is axially slidably connected to the spline groove, and the top end of the spring is fixedly connected to the inner rotating shaft, and the bottom end of the spring is fixedly connected to the spline shaft.

[0015] Preferably, the surface of the dredging rod is rough, and the bottom end of the dredging rod extends to the inside of the sandblasting port.

[0016] Compared with the prior art, the present utility model provides a sand blasting port of a sand shooting mechanism, which has the following beneficial effects:

[0017] 1. For the sand blasting port of the sand shooting mechanism, the rotation of the inner conveying piece can pressurize the air flow inside the air inlet pipe and then convey it to the sand blasting pipe. The outer conveying piece and the driven conveying piece can pressurize the sand grains inside the sand inlet pipe and the sand outlet elbow and then convey them to the sand blasting pipe, where they are mixed with the pressurized air flow. The pressurized and mixed sand grains and air flow are ejected from the sand blasting port, so as to improve the power when the sand grains and air flow are ejected, thereby improving the sand blasting effect.

[0018] 2. For the sand blasting port of the sand shooting mechanism, during the rotation of the inner rotating shaft, the spline shaft can be driven to move. Therefore, during the rotation of the inner rotating shaft, the dredging rod can be driven to reciprocate in the up and down directions, and the sand blasting port can be dredged through the reciprocating dredging rod in the up and down directions, preventing the sand blasting port from being blocked, thereby further improving the sand blasting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a partial cross-sectional view of the structure of the present utility model;

[0021] Figure 3 is of the present utility model Figure 2 a partially enlarged schematic view of the structure at A in;

[0022] Figure 4 is of the present utility model Figure 2 a partially enlarged schematic view of the structure at B in;

[0023] Figure 5 is of the present utility model Figure 2 a partially enlarged schematic view of the structure at C in.

[0024] Wherein: 1. Sand blasting shell; 2. End cover; 21. Motor; 22. Driving gear disc; 23. Driving rotating groove; 24. Inner rotating ring; 25. Outer rotating ring; 26. Inner rotating shaft; 27. Inner conveying piece; 28. Outer rotating shaft; 29. Outer conveying piece; 3. Air inlet pipe; 31. Air inlet rotating groove; 32. Air inlet driven rotating ring; 33. Annular wave groove; 34. Three-headed rod; 35. Slide pin; 36. Spline shaft; 37. Dredging rod; 4. Sand inlet pipe; 41. Sand inlet rotating groove; 42. Sand inlet driven rotating ring; 43. Driven shaft; 44. Driven conveying piece; 45. Universal joint; 5. Sand blasting pipe; 6. Sand blasting port; 7. Sand outlet elbow; 8. Bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-5 , the present invention provides a sandblasting port of a sand injection mechanism, including a sandblasting shell 1. The top end of the sandblasting shell 1 is fixed with an end cover 2 by bolts. A driving structure for pressurizing sand grains and air flow is arranged inside the end cover 2. An air inlet pipe 3 is arranged in the middle of the end cover 2. An anti-blocking structure is arranged inside the air inlet pipe 3. A sand inlet pipe 4 is arranged outside the end cover 2. The bottom end of the sandblasting shell 1 is fixed with a sandblasting pipe 5. A sandblasting port 6 is opened inside the sandblasting pipe 5. The bottom end of the sand inlet pipe 4 is fixed with a sand outlet elbow 7. A bracket 8 is fixed inside the sandblasting shell 1, and the air inlet pipe 3 and the sand inlet pipe 4 are fixed inside the bracket 8;

[0027] The driving structure includes a motor 21. The motor 21 is installed on the end cover 2. The output end of the motor 21 is fixed with a driving gear disc 22. Driving rotating grooves 23 are opened on the air inlet pipe 3 and the sand inlet pipe 4. An inner rotating ring 24 rotates inside the driving rotating groove 23 on one side of the air inlet pipe 3. An outer rotating ring 25 rotates inside the driving rotating groove 23 on one side of the sand inlet pipe 4. An inner rotating shaft 26 is arranged inside the air inlet pipe 3. Inner conveying sheets 27 are fixed on the surface of the inner rotating shaft 26. An outer rotating shaft 28 is arranged inside the sand inlet pipe 4. Outer conveying sheets 29 are fixed on the surface of the outer rotating shaft 28. A sand inlet rotating groove 41 is opened on the sand outlet elbow 7. A sand inlet driven rotating ring 42 rotates inside the sand inlet rotating groove 41. A driven shaft 43 is arranged inside the sand outlet elbow 7. Driven conveying sheets 44 are fixed on the surface of the driven shaft 43. A universal joint 45 is installed between the outer rotating shaft 28 and the driven shaft 43;

[0028] The anti-blocking structure includes an air inlet rotating groove 31. The air inlet rotating groove 31 is opened at the lower part of the air inlet pipe 3. An air inlet driven rotating ring 32 rotates inside the air inlet rotating groove 31. An annular wave groove 33 is opened on the inner wall of the air inlet pipe 3. A three-headed rod 34 is arranged below the inner rotating shaft 26. A sliding pin 35 is fixed at the outer end of the three-headed rod 34. A spline shaft 36 is fixed at the top end of the three-headed rod 34. A dredging rod 37 is fixed at the bottom end of the three-headed rod 34. By connecting the air inlet pipe 3 to an external air compressor, air flow can be conveyed into the air inlet pipe 3. By connecting the sand inlet pipe 4 to an external abrasive pipe of a sandblasting machine, sand grains can be conveyed into the sand inlet pipe 4. Therefore, the pressurized air flow and sand grains can be mixed and ejected to improve the sandblasting effect.

[0029] Furthermore, the tops of the air inlet pipe 3 and the sand inlet pipe 4 are fixedly connected to the sandblasting shell 1, the bottom ends of the air inlet pipe 3 are fixedly connected to the sand outlet elbow pipe 7, and the sand outlet elbow pipe 7 is fixedly connected to the sandblasting pipe 5, the bottom end of the sand inlet pipe 4 is fixedly connected to the sandblasting pipe 5, the middle parts of the air inlet pipe 3 and the sand inlet pipe 4 are fixedly connected to the sandblasting shell 1 through the bracket 8, and the driving groove 23 divides the air inlet pipe 3 and the sand inlet pipe 4 into two parts respectively, the middle parts of the air inlet pipe 3 and the sand inlet pipe 4 can be supported and fixed by the bracket 8, and the top parts of the air inlet pipe 3 and the sand inlet pipe 4 can be supported and fixed by the sandblasting shell 1.

[0030] Furthermore, tooth grooves are provided on the outer surfaces of the inner rotating ring 24 and the outer rotating ring 25, and the driving gear disc 22 engages with the inner rotating ring 24 and the outer rotating ring 25 on both sides through the tooth grooves. When the driving gear disc 22 rotates, the inner rotating ring 24 and the outer rotating ring 25 can be driven to rotate through the engagement with the tooth grooves.

[0031] Furthermore, the top end of the inner conveying sheet 27 is fixedly connected to the inner rotating ring 24 , and the bottom end of the inner conveying sheet 27 is fixedly connected to the intake driven rotating ring 32 , so that the inner conveying sheet 27 can be supported and rotated by the inner rotating ring 24 and the intake driven rotating ring 32 .

[0032] Furthermore, the top end of the outer conveying sheet 29 is fixedly connected to the outer rotating ring 25, the outer rotating shaft 28 is transmission-connected to the driven shaft 43 through a universal joint 45, and the bottom end of the driven conveying sheet 44 is fixedly connected to the sand-feeding driven rotating ring 42, so that the outer conveying sheet 29 can be supported and rotated by the outer rotating ring 25, and the driven conveying sheet 44 can be supported and rotated by the sand-feeding driven rotating ring 42.

[0033] Furthermore, the surface of the annular wave groove 33 is concave and convex, and the sliding pin 35 is arranged inside the annular wave groove 33 and is slidably connected to the annular wave groove 33. When the sliding pin 35 moves from the convex side of the annular wave groove 33 to the concave side, the sliding pin 35 is able to move downward through the extension deformation of the spring. At this time, the sliding pin 35 can drive the spline shaft 36 to move downward through the three-head rod 34, and then the dredging rod 37 follows the three-head rod 34 to move downward.

[0034] Furthermore, a spline groove is provided at the bottom end of the inner rotating shaft 26, and a spring is arranged inside the spline groove. The spline shaft 36 is axially slidably connected to the spline groove, and the top of the spring is fixedly connected to the inner rotating shaft 26, and the bottom end of the spring is fixedly connected to the spline shaft 36. The spline shaft 36 is axially slidably connected to the spline groove. When the spline shaft 36 slides inside the spline groove, it can drive the spring to deform so that the spline shaft 36 can subsequently reciprocate in the up and down directions.

[0035] Further, the surface of the dredging rod 37 is rough, and the bottom end of the dredging rod 37 extends into the inside of the sand blasting port 6, so that the rough-surfaced dredging rod 37 can have a large frictional force with the sand grains, so that the dredging rod 37 moving in the up and down directions can dredge the sand blasting port 6.

[0036] During use, by connecting the air inlet pipe 3 to an external air compressor, air flow can be conveyed into the inside of the air inlet pipe 3. By connecting the sand inlet pipe 4 to the abrasive pipe of an external sand blaster, sand grains can be conveyed into the inside of the sand inlet pipe 4. At the same time, the motor 21 is started and drives the driving gear disc 22 to rotate. Then, through the meshing of the driving gear disc 22 with the inner rotating rings 24 and the outer rotating ring 25 on both sides, the inner rotating ring 24 can drive the inner conveying piece 27 and the inner rotating shaft 26 to rotate, and the bottom end of the inner conveying piece 27 can be supported and rotated through the air inlet driven rotating ring 32. At the same time, the outer rotating ring 25 can drive the outer conveying piece 29 and the outer rotating shaft 28 to rotate, and the outer rotating shaft 28 can drive the driven shaft 43 and the driven conveying piece 44 to rotate through the universal joint 45, and the bottom end of the driven conveying piece 44 can be supported and rotated through the sand inlet driven rotating ring 42. Then, through the rotation of the inner conveying piece 27, the air flow inside the air inlet pipe 3 can be pressurized and conveyed into the sand blasting pipe 5. Through the outer conveying piece 29 and the driven conveying piece 44, the sand grains inside the sand inlet pipe 4 and the sand outlet elbow 7 can be pressurized and conveyed into the sand blasting pipe 5, and are mixed with the pressurized air flow. Then, the pressurized and mixed sand grains and air flow are ejected from the sand blasting port 6, so as to improve the power when the sand grains and the air flow are ejected, thereby improving the sand blasting effect. In addition, during the rotation of the inner rotating shaft 26, the spline shaft 36 can be driven to rotate through the spline groove provided at its bottom end. Then, the spline shaft 36 can drive the three-headed rod 34 and the dredging rod 37 to rotate, and the three-headed rod 34 can drive the sliding pin 35 to rotate inside the annular wave groove 33. When the sliding pin 35 moves from the concave part to the convex part of the annular wave groove 33, the sliding pin 35 can move upward. At this time, the sliding pin 35 can drive the spline shaft 36 to move upward through the three-headed rod 34, and compress and deform the spring arranged inside the spline groove. Then, the dredging rod 37 moves upward following the three-headed rod 34. Similarly, when the sliding pin 35 moves from the convex part to the concave part of the annular wave groove 33, through the stretching deformation of the spring, the sliding pin 35 can move downward. At this time, the sliding pin 35 can drive the spline shaft 36 to move downward through the three-headed rod 34. Then, the dredging rod 37 moves downward following the three-headed rod 34. Therefore, during the rotation of the inner rotating shaft 26, the dredging rod 37 can be driven to reciprocate in the up and down directions. Therefore, the dredging rod 37 reciprocating in the up and down directions can dredge the sand blasting port 6 and prevent the sand blasting port 6 from being blocked.

[0037] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. The sandblasting port of a sand shooting mechanism, comprising a sandblasting shell (1), characterized in that: The top end of the sandblasting shell (1) is fixed with an end cover (2) by bolts. A driving structure for pressurizing sand grains and air flow is arranged inside the end cover (2). An air inlet pipe (3) is arranged in the middle of the end cover (2). An anti-blocking structure is arranged inside the air inlet pipe (3). A sand inlet pipe (4) is arranged outside the end cover (2). The bottom end of the sandblasting shell (1) is fixed with a sandblasting pipe (5). A sandblasting port (6) is opened inside the sandblasting pipe (5). The bottom end of the sand inlet pipe (4) is fixed with a sand outlet elbow pipe (7). A bracket (8) is fixed inside the sandblasting shell (1), and the air inlet pipe (3) and the sand inlet pipe (4) are fixed inside the bracket (8). The driving structure includes a motor (21). The motor (21) is installed on the end cover (2). A driving gear disc (22) is fixed to the output end of the motor (21). Driving rotation grooves (23) are opened on the air inlet pipe (3) and the sand inlet pipe (4). An inner rotating ring (24) rotates inside the driving rotation groove (23) on one side of the air inlet pipe (3). An outer rotating ring (25) rotates inside the driving rotation groove (23) on one side of the sand inlet pipe (4). An inner rotating shaft (26) is arranged inside the air inlet pipe (3). Inner conveying sheets (27) are fixed to the surface of the inner rotating shaft (26). An outer rotating shaft (28) is arranged inside the sand inlet pipe (4). Outer conveying sheets (29) are fixed to the surface of the outer rotating shaft (28). A sand inlet rotation groove (41) is opened on the sand outlet elbow pipe (7). A sand inlet driven rotating ring (42) rotates inside the sand inlet rotation groove (41). A driven shaft (43) is arranged inside the sand outlet elbow pipe (7). Driven conveying sheets (44) are fixed to the surface of the driven shaft (43). A universal joint (45) is installed between the outer rotating shaft (28) and the driven shaft (43). The anti-blocking structure includes an air inlet rotation groove (31). The air inlet rotation groove (31) is opened in the lower part of the air inlet pipe (3). An air inlet driven rotating ring (32) rotates inside the air inlet rotation groove (31). An annular wave groove (33) is opened on the inner wall of the air inlet pipe (3). A three-headed rod (34) is arranged below the inner rotating shaft (26). A sliding pin (35) is fixed to the outer end of the three-headed rod (34). A spline shaft (36) is fixed to the top end of the three-headed rod (34). A dredging rod (37) is fixed to the bottom end of the three-headed rod (34).

2. The sand-blasting port of a sand shooting mechanism according to claim 1, characterized in that: The tops of the air inlet pipe (3) and the sand inlet pipe (4) are fixedly connected to the sandblasting shell (1). The bottom end of the air inlet pipe (3) is fixedly connected to the sand outlet elbow pipe (7), and the sand outlet elbow pipe (7) is fixedly connected to the sandblasting pipe (5). The bottom end of the sand inlet pipe (4) is fixedly connected to the sandblasting pipe (5). The middle parts of the air inlet pipe (3) and the sand inlet pipe (4) are fixedly connected to the sandblasting shell (1) through the bracket (8).

3. The sand-blasting port of a sand shooting mechanism according to claim 1, characterized in that: Tooth grooves are opened on the outer side surfaces of the inner rotating ring (24) and the outer rotating ring (25). The driving gear disc (22) meshes with the inner rotating ring (24) and the outer rotating ring (25) on both sides through the tooth grooves.

4. The sand blasting port of a sand shooting mechanism according to claim 1, characterized in that: The top end of the inner conveying piece (27) is fixedly connected to the inner rotating ring (24), and the bottom end of the inner conveying piece (27) is fixedly connected to the air intake driven rotating ring (32).

5. The sand blasting port of a sand shooting mechanism according to claim 1, characterized in that: The top end of the outer conveying piece (29) is fixedly connected to the outer rotating ring (25), the outer rotating shaft (28) is transmission-connected to the driven shaft (43) via a universal joint (45), and the bottom end of the driven conveying piece (44) is fixedly connected to the sand-feeding driven rotating ring (42).

6. The sand blasting port of a sand shooting mechanism according to claim 1, characterized in that: The surface of the annular wave groove (33) is concave-convex; the sliding pin (35) is arranged inside the annular wave groove (33) and is slidably connected to the annular wave groove (33).

7. The sand blasting port of a sand shooting mechanism according to claim 1, characterized in that: A spline groove is formed at the bottom end of the inner rotating shaft (26), and a spring is arranged inside the spline groove. The spline shaft (36) is axially slidably connected to the spline groove, and the top end of the spring is fixedly connected to the inner rotating shaft (26), and the bottom end of the spring is fixedly connected to the spline shaft (36).

8. The sand blasting opening of a sand shooting mechanism according to claim 1, characterized in that: The surface of the dredging rod (37) is rough, and the bottom end of the dredging rod (37) extends to the inside of the sandblasting port (6).

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