Impeller sandblasting device

Abstract

An impeller sandblasting device belongs to the technical field of abrasive jetting devices, and the device includes: a sandblasting tube and a barrel cover. The barrel cover is penetrated by a main shaft, a driving wheel is fixedly arranged below the barrel cover, the main shaft coaxially passes through the driving wheel, a swing arm is arranged above the driving wheel, and a driven wheel parallel to the driving wheel is rotatably arranged at the end of the swing arm, and the driven wheel is connected to the driving wheel; a cantilever is vertically arranged at the lower end of the main shaft, which moves along the length direction; a connecting block is arranged at the end of the cantilever; a mounting shaft is penetrated by the connecting block, the mounting shaft is rotatably arranged around the axis, and its axis is perpendicular to the rotation axis of the connecting block, the upper and lower ends of the mounting shaft are respectively located above and below the cantilever, and the lower end of the mounting shaft extends to the nozzle spraying area, which is used to coaxially connect the impeller, and the upper end of the mounting shaft is connected to the driven wheel through a universal joint. This scheme can automatically adjust the angle of the impeller during sandblasting, and can perform sandblasting on various angles of the impeller, which can effectively improve the uniformity of sandblasting at various locations of the impeller.

Description

Technical Field

[0001] The invention belongs to the technical field of abrasive jetting devices, and in particular relates to an impeller sandblasting device. Background Art

[0002] The sandblasting device uses compressed air to eject powdered abrasive from the nozzle at high speed, so that the high-speed abrasive impacts the surface of the part, thereby improving the surface quality of the object. However, due to the relatively complex blade structure and many dead angles of impeller parts, the traditional spraying device can only rotate the impeller around the axis at most, so that the dead angle of the impeller has a greater probability of contact with the abrasive, thereby improving the uniformity of sandblasting at various parts of the impeller. However, the effect of this method on improving the uniformity of impeller sandblasting still needs to be improved. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides an impeller sandblasting device, which can automatically adjust the angle of the impeller during sandblasting, can perform sandblasting on various angles of the impeller, and can effectively improve the uniformity of sandblasting at various locations of the impeller.

[0004] In order to achieve the purpose of the present invention, the following scheme is proposed:

[0005] An impeller sandblasting device comprises a sandblasting barrel and a barrel cover. The side wall of the sandblasting barrel is provided with a plurality of nozzles in a circumferential array.

[0006] A main shaft is vertically passed through the barrel cover, a motor for driving the main shaft to rotate is provided on the top of the barrel cover, a driving wheel is fixedly provided under the barrel cover, the main shaft coaxially passes through the driving wheel, a swing arm is provided above the driving wheel, the front end of the swing arm is rotatably arranged around the axis of the main shaft, and a driven wheel parallel to the driving wheel is rotatably provided at the end of the swing arm, and the driven wheel is connected to the driving wheel;

[0007] A cantilever is vertically arranged at the lower end of the main shaft, and a driver is arranged on the main shaft or the cantilever to drive the cantilever to move along the length direction; a connecting block is rotatably arranged at the end of the cantilever, and the axis of rotation of the connecting block is perpendicular to the axis of the cantilever and the rotating shaft at the same time;

[0008] A mounting shaft is passed through the connecting block. The mounting shaft is arranged to rotate around an axis, and its axis is perpendicular to the rotation axis of the connecting block. The upper and lower ends of the mounting shaft are respectively located above and below the cantilever. The lower end of the mounting shaft extends to the nozzle injection area and is used to coaxially connect the impeller. The upper end of the mounting shaft is connected to the driven wheel through a universal joint.

[0009] The beneficial effect of the present invention is that the present invention utilizes a cantilever to control the swing of the mounting shaft, and drives the driven wheel to rotate around the main shaft through the mounting shaft, and when the driven wheel rotates around the main shaft, it drives the mounting shaft to rotate in the opposite direction, so that the impeller can rotate around its own axis while revolving around the main shaft, and swing with the mounting shaft, so that the angle of the impeller in the sandblasting barrel can be adjusted at multiple angles, so that each position of the impeller has the opportunity to actively face the nozzle, thereby effectively improving the sandblasting uniformity of various parts of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0011] Figure 1 The figure shows the internal structure of a preferred structure of the present application.

[0012] Figure 2 Shows Figure 1 A partial enlarged view of point A in the middle.

[0013] Figure 3 A cross-sectional view showing a preferred structure of the present application.

[0014] Figure 4 A schematic diagram of the structure below the baffle in the working state of the present application is shown.

[0015] Figure 5 A schematic diagram of the structure above the baffle in the working state of the present application is shown.

[0016] Markings in the figure: sandblasting cylinder -1, nozzle -11, driving wheel -12, swing arm -13, driven wheel -14, barrel cover -2, main shaft -3, roller -31, cantilever -4, through hole -401, strip hole -402, connecting block -41, driver -42, screw -421, mounting shaft -5, upper disc -51, lower disc -52, baffle -6, through hole -61, sealing plate -62. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] like Figure 1 and Figures 3 to 5 As shown, an impeller sandblasting device comprises: a sandblasting barrel 1 and a barrel cover 2, wherein a plurality of nozzles 11 are arranged in a circumferential array on the side wall of the sandblasting barrel 1.

[0019] A main shaft 3 is vertically penetrated through the barrel cover 2, and a motor for driving the main shaft 3 to rotate is provided on the top of the barrel cover 2. The motor and the main shaft can be driven by gears or belts. A driving wheel 12 is fixedly provided under the barrel cover 2, and the main shaft 3 coaxially passes through the driving wheel 12. A swing arm 13 is provided above the driving wheel 12. The front end of the swing arm 13 is rotatably arranged around the axis of the main shaft 3, and the end of the swing arm 13 is rotatably provided with a driven wheel 14 whose axis is parallel to the axis of the driving wheel 12, and the driven wheel 14 is connected to the driving wheel 12.

[0020] Specifically, the connection structure between the driven wheel 14 and the driving wheel 12 can adopt belt drive, preferably synchronous belt drive, or sprocket drive, or the driven wheel 14 and the driving wheel 12 can be directly set as mutually meshing gears to avoid slippage in the connection between the driven wheel 14 and the driving wheel 12.

[0021] As a preferred structure, Figure 2 As shown, a connecting pipe is provided at the bottom of the barrel cover 2, the main shaft 3 is passed through the connecting pipe, the driving wheel 12 is sleeved on the outside of the connecting pipe, and the front end of the swing arm 13 is rotatably sleeved on the outside of the connecting pipe.

[0022] Specifically, Figures 1 to 3 and Figure 5 As shown, a cantilever 4 is vertically provided at the lower end of the main shaft 3, and a driver 42 is provided on the main shaft 3 or the cantilever 4 for driving the cantilever 4 to move along the length direction. There are various connection structures between the cantilever 4 and the main shaft 3, which can all meet the requirement that the cantilever 4 is perpendicular to the main shaft 3 and can move along the length direction. For example, a long hole consistent with the length direction is opened on the cantilever 4, and at least two screws are used to pass through the long hole, and the front end of the screw is connected to the side or bottom surface of the main shaft 3. When assembling, the cantilever 4 is perpendicular to the main shaft 3, so that the cantilever 4 can be moved and adjusted along the length direction, and the cantilever 4 can be locked with screws after adjustment; or the cantilever 4 is vertically passed through the main shaft 3, and screws are provided on the side wall or bottom surface of the main shaft 3 to press the cantilever 4, and this structure can also meet the requirement that the cantilever 4 moves along the length direction. The driver 42 is a linear motor, which can directly drive the cantilever 4 to move; the driver 42 can also be a rotary motor, and a gear is set on its transmission shaft, and a rack meshing with the gear is set, and the rack and the rotary motor are respectively set on the main shaft 3 and the cantilever 4, and the rack is parallel to the cantilever, which can also drive the cantilever 4 to move; in order to facilitate power transmission and simplify line settings, a cavity can be set on the cantilever 4, and a battery can be set in the cavity to provide power to the driver 42.

[0023] Specifically, Figure 1 , Figure 5 As shown, a connecting block 41 is rotatably provided at the end of the cantilever 4 , and the axis of rotation of the connecting block 41 is perpendicular to the axes of the cantilever 4 and the rotating shaft 3 .

[0024] Specifically, Figure 1 , Figure 5 As shown, a mounting shaft 5 is passed through the connecting block 41, and the mounting shaft 5 is arranged to rotate around an axis, and its axis is perpendicular to the rotation axis of the connecting block 41. The upper and lower ends of the mounting shaft 5 are respectively located above and below the cantilever 4, and the lower end of the mounting shaft 5 extends to the injection area of ​​the nozzle 11, which is used to coaxially connect the impeller, and the upper end of the mounting shaft 5 is connected to the driven wheel 14 through a universal joint.

[0025] Principle of sandblasting: The main shaft 3 is driven to rotate by a motor, and the rotation of the main shaft 3 will drive the cantilever 4 to rotate around the main shaft 3, and the cantilever 4 drives the installation shaft 5 to rotate around the main shaft 3 through the connecting block 41. Because the upper end of the installation shaft 5 is connected to the driven wheel 14 through a universal joint, the installation shaft 5 will drive the driven wheel 14 to revolve around the main shaft 3. The swing arm 13 is used to fix the distance between the driven wheel 14 and the main shaft 3, so that the distance between the upper end of the installation shaft 5 and the main shaft 3 is also kept fixed, so that the angle between the lower end of the installation shaft 5 and the main shaft 3 can be adjusted by controlling the movement of the cantilever 4 by the driver 42, so that the installation shaft 5 swings around the rotation axis of the connecting block 41. The driven wheel 14 is connected to the upper end of the installation shaft 5 through a universal joint, so that the installation shaft 5 can not only adapt to the change of the angle of the installation shaft 5, but also drive the driven wheel 14 to rotate around the main shaft 3 with the cantilever 4 through the installation shaft 5. The driven wheel 14 will rotate around the main shaft 3, while the driving wheel 12 remains fixed. The driven wheel 14 is connected to the driving wheel 12, so when the driven wheel 14 rotates around the main shaft 3, the driven wheel 14 will rotate around its own axis, thereby driving the installation shaft 5 to rotate, so that the impeller can rotate around its own axis while revolving around the main shaft 3. In addition, the swing of the installation shaft 5 can adjust the angle of the impeller in the sandblasting cylinder 1, so that each position of the impeller has the opportunity to actively face the nozzle 11, thereby effectively improving the sandblasting effect of the impeller.

[0026] Preferably, Figure 2 As shown, a through hole 401 extending along the length direction is provided at the front end of the cantilever 4, and strip holes 402 connected to the through hole 401 and parallel to the through hole 401 are provided on both sides of the cantilever 4. The lower end of the main shaft 3 passes downward through the through hole 401, and at least two rollers 31 are provided on both sides of the main shaft 3. The rollers 31 are arranged along the length direction of the cantilever 4, and the rollers 31 on both sides are respectively penetrated in the corresponding strip holes 402 to ensure the smoothness of the cantilever 4 when moving along the length direction, and the verticality between the cantilever 4 and the main shaft 3 is ensured by the multiple rollers 31.

[0027] More specifically, Figure 2As shown, the driver 42 is arranged at the front end of the cantilever 4, and the driving shaft of the driver 42 is coaxially provided with a screw rod 421, the screw rod 421 is parallel to the cantilever 4, and the screw rod 421 passes through the main shaft 3. The driver 42 drives the screw rod 421 to rotate, so as to adjust the position of the cantilever 4 along the length direction. The use of the screw rod 421 to adjust the cantilever 4 can effectively improve the stability of the adjustment of the cantilever 4 and improve the adjustment accuracy.

[0028] Preferably, Figure 3 As shown, the universal joint connecting the installation shaft 5 and the driven wheel 14 is a spherical universal joint structure. Specifically, the ball head of the spherical universal joint is arranged at the top of the installation shaft 5, and the ball head is embedded in the driven wheel 14 to reduce the installation size.

[0029] Preferably, Figure 1 and Figures 3 to 5 As shown, a baffle 6 is provided at the lower end of the main shaft 3, and the baffle 6 rotates together with the rotating shaft 3. The cantilever 4 is located above the baffle 6, and a through hole 61 parallel to the cantilever 4 is opened below the baffle 6 corresponding to the end of the cantilever 4. The lower end of the mounting shaft 5 passes through the through hole 61 to prevent the abrasive from damaging the core parts of the sandblasting device. When the cantilever 4 moves along the length direction, the mounting shaft 5 swings in the through hole 61. During sandblasting, the impeller is located below the baffle 6.

[0030] Preferably, the outer wall of the baffle 6 is sealed and connected to the inner wall of the sandblasting tube 1, such as Figure 1 As shown, a sealing plate 62 is provided on the upper sliding surface of the baffle plate 6 corresponding to the through hole 61, and the mounting shaft 5 passes through the sealing plate 62. When the mounting shaft 5 swings in the through hole 61, the sealing plate 62 will move along the through hole 61 to seal the through hole to prevent the abrasive from rising above the baffle plate 6.

[0031] Preferably, Figure 3 , Figure 5 As shown, an upper disc 51 is provided above the installation shaft 5 corresponding to the impeller installation position, which is used to cover the top surface of the impeller hub. A lower disc 52 is provided at the lower end of the installation shaft 5, which is used to cover the other end surface of the impeller hub. The lower disc 52 is connected to the installation shaft 5 by screws. The upper disc 51 and the lower disc 52 jointly press the impeller to the installation shaft 5. This structure can prevent the installation surfaces at both ends of the impeller hub from being damaged.

[0032] The above description is only a preferred embodiment of the present invention, and is not intended to be the only one or to limit the present invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. An impeller sandblasting device, comprising: A sandblasting barrel (1) and a barrel cover (2), wherein a plurality of nozzles (11) are arranged in a circular array on the side wall of the sandblasting barrel (1), and the characteristics are: A main shaft (3) is vertically passed through the barrel cover (2), a motor for driving the main shaft (3) to rotate is provided on the top of the barrel cover (2), a driving wheel (12) is fixedly provided below the barrel cover (2), the main shaft (3) coaxially passes through the driving wheel (12), a swing arm (13) is provided above the driving wheel (12), the front end of the swing arm (13) is rotatably arranged around the axis of the main shaft (3), and a driven wheel (14) parallel to the driving wheel (12) is rotatably provided at the rear end of the swing arm (13), and the driven wheel (14) is connected to the driving wheel (12); A cantilever (4) is vertically provided at the lower end of the main shaft (3), and the main shaft (3) or the cantilever (4) is provided with a driver (42) for driving the cantilever (4) to move along its own length direction; a connecting block (41) is rotatably provided at the end of the cantilever (4), and the axis of rotation of the connecting block (41) is perpendicular to the axes of the cantilever (4) and the rotating shaft (3); A mounting shaft (5) is provided on the connecting block (41). The mounting shaft (5) is rotatably arranged around an axis, and the axis is perpendicular to the rotation axis of the connecting block (41). The upper and lower ends of the mounting shaft (5) are respectively located above and below the cantilever (4). The lower end of the mounting shaft (5) extends to the injection area of ​​the nozzle (11) and is used for coaxially connecting to the impeller. The upper end of the mounting shaft (5) is connected to the driven wheel (14) via a universal joint. A through hole (401) extending in the length direction is formed at the front end of the cantilever (4), and strip holes (402) communicating with the through hole (401) and parallel to the through hole (401) are formed on both sides of the cantilever (4); the lower end of the main shaft (3) passes downward through the through hole (401), and at least two rollers (31) are respectively formed on both sides of the main shaft (3); the rollers (31) are arranged in the length direction of the cantilever (4), and the rollers (31) on both sides are respectively inserted into the corresponding strip holes (402); The driver (42) is arranged at the front end of the cantilever (4); a screw rod (421) is coaxially arranged on the driving shaft of the driver (42); the screw rod (421) is parallel to the cantilever (4), and the screw rod (421) passes through the main shaft (3).

2. An impeller sandblasting device according to claim 1, characterized in that: The universal joint connecting the mounting shaft (5) and the driven wheel (14) is a spherical universal joint structure, the ball head of the spherical universal joint is arranged at the top end of the mounting shaft (5), and the ball head is embedded in the driven wheel (14).

3. The impeller sandblasting device according to claim 1, characterized in that: A baffle (6) is provided at the lower end of the main shaft (3), and the baffle (6) is rotatably arranged together with the rotating shaft (3). The cantilever (4) is located above the baffle (6). A through hole (61) parallel to the cantilever (4) is opened below the baffle (6) corresponding to the end of the cantilever (4). The lower end of the mounting shaft (5) passes through the through hole (61). When sandblasting, the impeller is located below the baffle (6).

4. An impeller sandblasting device according to claim 3, characterized in that: The outer wall of the baffle (6) is sealedly connected to the inner wall of the sandblasting cylinder (1); a sealing plate (62) is slidably provided above the baffle (6) corresponding to the through hole (61); and the mounting shaft (5) passes through the sealing plate (62).

5. The impeller sandblasting device according to claim 1, characterized in that: An upper disc (51) is provided above the installation shaft (5) corresponding to the impeller installation position, and is used to cover the top surface of the impeller hub. A lower disc (52) is provided at the lower end of the installation shaft (5), and is used to cover the bottom surface of the impeller hub. The lower disc (52) is connected to the installation shaft (5) by screws. The upper disc (51) and the lower disc (52) jointly press the impeller onto the installation shaft (5).

6. The impeller sandblasting device according to claim 1, characterized in that: The connection structure between the driven wheel (14) and the driving wheel (12) adopts a belt drive, a sprocket drive, or the driven wheel (14) and the driving wheel (12) are arranged as mutually meshing gears.

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