A compressor casing flow passage inner surface processing device

Abstract

The application relates to the technical field of compressor shell processing equipment, in particular to a compressor shell flow passage inner surface treatment device which comprises a base, a mounting seat is slidably arranged on the base, a driving assembly for driving the mounting seat to move along the length direction of the base is arranged on the base, a rotating motor is connected to the mounting seat, a rotating rod is coaxially connected to the output shaft of the rotating motor through a shaft coupling, a metal flexible hose which can extend into the compressor shell flow passage is fixedly connected to the end of the rotating rod away from the rotating motor, a polishing head for polishing the inner wall of the compressor shell flow passage is connected to the end of the metal flexible hose, and a clamping assembly for clamping and fixing the compressor shell is further arranged on the base and located at the end of the base away from the mounting seat. The application can improve the problem that the bending area in the flow passage cannot be effectively treated due to the straight-line movement of sand particles and improve the processing efficiency of the inner surface of the compressor shell flow passage.

Description

Technical Field

[0001] This utility model relates to the field of compressor housing processing equipment technology, and in particular to a compressor housing flow channel inner surface treatment device. Background Technology

[0002] The operating efficiency of a turbocharger is determined by the gas entering and exiting the compressor housing's flow channels. When producing the compressor housing using low-pressure casting, residual sand can form on the inner wall of the flow channels after casting due to factors such as poor surface density of the sand cores used to form the flow channels. This reduces the roughness of the inner wall of the flow channels, affecting the gas flow into and out of the turbine housing, thus impacting its operating efficiency and ultimately leading to a decrease in the casting yield.

[0003] To address this issue, existing technologies generally employ sandblasting. The specific operation involves using hydraulic air to feed sand particles into a sandblasting gun. The sand particles are impacted and splashed into the casting by the high-speed airflow, achieving a surface treatment effect. However, because the sand particles are sprayed in a straight line, and the compressor housing has a spiral-shaped irregular structure, some areas are not treated, resulting in poor treatment of internal areas. Furthermore, this process increases the cost of consumables for castings and also generates dust pollution. Utility Model Content

[0004] In order to improve the problem that the bending area in the flow channel cannot be effectively processed due to the linear motion of sand particles, and to improve the processing efficiency of the inner surface of the compressor housing flow channel, this application provides a compressor housing flow channel inner surface treatment device.

[0005] The compressor housing flow channel inner surface treatment device provided in this application adopts the following technical solution:

[0006] A compressor housing flow channel inner surface treatment device includes a base, a mounting seat slidably disposed on the base, a drive assembly for driving the mounting seat to move along the length direction of the base, a rotary motor connected to the mounting seat, the output shaft of the rotary motor being coaxially connected to a rotating rod via a coupling, a flexible metal hose that can extend into the compressor housing flow channel being fixedly connected to the end of the rotating rod away from the rotary motor, a grinding head for grinding the inner wall of the compressor housing flow channel being connected to the end of the flexible metal hose, and a clamping assembly for clamping and fixing the compressor housing being disposed on the base, the clamping assembly being located at the end of the base plate away from the mounting seat.

[0007] Preferably, the drive assembly includes a fixed bearing, a threaded rod, a nut seat, a mounting plate, and a drive motor. The base has a mounting groove along its length. The fixed bearing is connected to the mounting groove, with one fixed bearing at each end of the groove. The threaded rod connects between the two fixed bearings. The drive motor is connected to the base, and its output shaft is coaxially connected to the threaded rod via a coupling. The nut seat is connected to the threaded rod, and its sidewall slides against the inner wall of the mounting groove. The mounting plate is connected to the nut seat and is positioned parallel to the base surface. The drive motor is connected to the mounting plate.

[0008] Preferably, the nut seat is arranged in an inverted "T" shape, and the inner cavity of the mounting groove is adapted to the nut seat.

[0009] Preferably, the clamping assembly includes a fixed plate, a pushing cylinder, a clamping plate, and a rubber compression pad. The fixed plate is connected to the base and is arranged in a direction perpendicular to the base. Two fixed plates are provided on the base and are arranged parallel to each other. The pushing cylinder is connected to the fixed plate, and the piston rod of the pushing cylinder is arranged in a direction perpendicular to the fixed plate. The two pushing cylinders are arranged opposite each other. The clamping plate is connected to the end of the pushing cylinder through which the piston rod passes through the fixed plate. The rubber compression pad is attached to the clamping plate and is located on the opposite surfaces of the two clamping plates.

[0010] Preferably, a limiting platform is connected to the base, the limiting platform is arranged along the length direction of the base, the flexible metal tube is placed on the limiting platform, the limiting platform has a limiting groove for the flexible metal tube to pass through, the housing of the rotating motor is connected to a limiting rod, four limiting rods are provided, the four limiting rods are arranged along the circumference of the flexible metal tube and fit against its side wall, and the limiting platform has a limiting hole for the limiting rods to pass through.

[0011] Preferably, the grinding head is provided with rounded corners, which are located at both ends of the grinding head.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] This utility model provides a compressor housing flow channel inner surface treatment device. Through the combination design of a flexible metal hose and a grinding head, it can flexibly adapt to the spiral irregular structure of the compressor housing flow channel. The flexible metal hose can achieve multi-angle bending under the drive of a rotating motor. The drive component drives the grinding head to move inside the compressor housing flow channel, so that the grinding head accurately covers the bending area of ​​the inner wall of the flow channel, thoroughly removes residual sand, significantly improves the inner wall roughness treatment effect, and improves the treatment blind zone problem caused by the straight jetting process in traditional sandblasting process. Thus, it achieves the effect of improving the problem that the bending area inside the flow channel cannot be effectively treated due to the straight movement of sand particles, and improves the processing efficiency of the inner surface of the compressor housing flow channel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the surface treatment device inside the compressor housing flow channel in the embodiments of this application;

[0015] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0017] Explanation of reference numerals in the attached drawings: 1. Base; 11. Limiting platform; 2. Mounting seat; 3. Drive assembly; 31. Fixed bearing; 32. Threaded rod; 33. Nut seat; 34. Mounting plate; 35. Drive motor; 4. Rotating motor; 41. Rotating rod; 42. Flexible metal hose; 43. Grinding head; 44. Limiting rod; 5. Clamping assembly; 51. Fixing plate; 52. Push cylinder; 53. Clamping plate; 54. Rubber extrusion pad. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] This application discloses an apparatus for treating the inner surface of a compressor housing flow channel. (Refer to...) Figure 1 , Figure 2 and Figure 3 The compressor housing flow channel inner surface treatment device includes a base 1, a mounting seat 2 slidably disposed on the base 1, a drive assembly 3 disposed on the base 1 for driving the mounting seat 2 to move along the length direction of the base 1, a rotary motor 4 connected to the mounting seat 2, a rotating rod 41 coaxially connected to the output shaft of the rotary motor 4 via a coupling, a flexible metal hose 42 that can extend into the compressor housing flow channel is fixedly connected to the end of the rotating rod 41 away from the rotary motor 4, a grinding head 43 for grinding the inner wall of the compressor housing flow channel is connected to the end of the flexible metal hose 42, and a clamping assembly for clamping and fixing the compressor housing is disposed on the base 1, the clamping assembly being located at the end of the base plate away from the mounting seat 2.

[0021] The combination design of the flexible metal hose 42 and the grinding head 43 can flexibly adapt to the spiral irregular structure of the compressor housing flow channel. The flexible metal hose 42 can be bent at multiple angles under the drive of the rotating motor 4. The drive component 3 drives the grinding head 43 to move in the flow channel of the compressor housing, so that the grinding head 43 accurately covers the bending area of ​​the inner wall of the flow channel, thoroughly removes residual sand, significantly improves the inner wall roughness treatment effect, and improves the problem of blind spots caused by straight jetting in traditional sandblasting processes.

[0022] The drive assembly 3 includes a fixed bearing 31, a threaded rod 32, a nut seat 33, a mounting plate 34, and a drive motor 35. A mounting groove is provided on the base 1 along its length. The fixed bearing 31 is connected to the mounting groove, with one fixed bearing at each end of the groove. The threaded rod 32 connects between the two fixed bearings 31. The drive motor 35 is connected to the base 1, and its output shaft is coaxially connected to the threaded rod 32 via a coupling. The nut seat 33 is connected to the threaded rod 32, and its sidewall slides against the inner wall of the mounting groove. The mounting plate 34 is connected to the nut seat 33 and is positioned parallel to the surface of the base 1. A rotating motor 4 is connected to the mounting plate 34. The nut seat 33 is inverted "T" shape, and the inner cavity of the mounting groove is adapted to fit the nut seat 33.

[0023] The design of the "I"-shaped nut seat 33 and the threaded rod 32, combined with the limiting structure of the mounting groove, ensures the smooth movement and positioning accuracy of the mounting seat 2. The drive assembly 3 enables the grinding head 43 to advance progressively along the flow channel axis, which, together with the rotational grinding of the flexible metal hose 42, forms a composite motion trajectory, greatly improving surface treatment efficiency.

[0024] The clamping assembly includes a fixed plate 51, a push cylinder 52, a clamping plate 53, and a rubber extrusion pad 54. The fixed plate 51 is connected to the base 1 and is arranged in a direction perpendicular to the base 1. There are two fixed plates 51 on the base 1, and the two fixed plates 51 are arranged parallel to each other. The push cylinder 52 is connected to the fixed plate 51 and the piston rod of the push cylinder 52 is arranged in a direction perpendicular to the fixed plate 51. The two push cylinders 52 are arranged opposite to each other. The clamping plate 53 is connected to the end of the push cylinder 52 through which the piston rod passes. The rubber extrusion pad is attached to the clamping plate 53, and the rubber extrusion pad 54 is located on the opposite plate surfaces of the two clamping plates 53.

[0025] A limiting platform 11 is connected to the base 1. The limiting platform 11 is set along the length of the base 1. The flexible metal hose 42 is placed on the limiting platform 11. The limiting platform 11 has a limiting groove for the flexible metal hose 42 to pass through. The housing of the rotating motor 4 is connected to a limiting rod 44. There are four limiting rods 44. The four limiting rods 44 are set along the circumference of the flexible metal hose 42 and fit against its side wall. The limiting platform 11 has a limiting hole for the limiting rods 44 to pass through.

[0026] The limiting platform 11, the limiting groove, and the limiting rod 44 provide multi-point support for the flexible metal hose 42, preventing fatigue damage caused by the flexible metal hose 42 drooping under its own weight or swinging up and down when rotating in a non-working state, thus extending the service life of key components. Initially, the limiting rod 44 can be partially inserted into the limiting hole without improving stability, but the limiting rod 44 does not contact the compressor housing.

[0027] The grinding head 43 is provided with rounded corners at both ends. The rounded corners at the ends of the grinding head 43 reduce hard contact with the inner wall of the flow channel, reduce the risk of accidental scratches, and optimize the stress distribution of the grinding contact surface.

[0028] The implementation principle of the compressor housing flow channel inner surface treatment device in this application embodiment is as follows: During operation, the compressor housing is placed between two clamping plates 53, and the clamping plates 53 are clamped and fixed by two pushing cylinders 52, so that the flow channel opening of the compressor housing is horizontally set and close to the limiting platform 11. The grinding head 43 is manually inserted into the flow channel of the compressor housing. Then, the rotating motor 4 drives the rotating rod 41, the flexible metal rod and the grinding head 43 to rotate. At the same time, the driving motor 35 drives the threaded rod 32 to rotate. Under the guiding and limiting action of the mounting groove, the nut seat 33 can move along the length direction of the threaded rod 32. The nut seat 33 drives the mounting base 2 to move towards the compressor housing, thereby driving the flexible metal hose 42 and the grinding head 43 to move along the flow channel depth in the compressor housing.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A device for treating the inner surface of a compressor housing flow channel, characterized in that: The system includes a base (1), on which a mounting seat (2) is slidably disposed. A drive assembly (3) for driving the mounting seat (2) to move along the length of the base (1) is disposed on the base (1). A rotary motor (4) is connected to the mounting seat (2). The output shaft of the rotary motor (4) is coaxially connected to a rotating rod (41) via a coupling. A flexible metal hose (42) that can extend into the compressor housing flow channel is fixedly connected to the end of the rotating rod (41) away from the rotary motor (4). A grinding head (43) for grinding the inner wall of the compressor housing flow channel is connected to the end of the flexible metal hose (42). A clamping assembly for clamping and fixing the compressor housing is also disposed on the base (1). The clamping assembly is located at the end of the base plate away from the mounting seat (2).

2. A device for treating the interior surface of a flow passage of a compressor casing according to claim 1, wherein: The drive assembly (3) includes a fixed bearing (31), a threaded rod (32), a nut seat (33), a mounting plate (34), and a drive motor (35). The base (1) has a mounting groove, which is arranged along the length of the base (1). The fixed bearing (31) is connected to the mounting groove, and there is one fixed bearing (31) at each end of the mounting groove. The threaded rod (32) is connected between the two fixed bearings (31). The drive motor (35) is connected to the base (1). The output shaft of the drive motor (35) is coaxially connected to the threaded rod (32) through a coupling. The nut seat (33) is connected to the threaded rod (32). The side wall of the nut seat (33) slides against the inner wall of the mounting groove. The mounting plate (34) is connected to the nut seat (33). The mounting plate (34) is arranged in a direction parallel to the surface of the base (1). The rotating motor (4) is connected to the mounting plate (34).

3. A device for treating the interior surface of a flow passage of a compressor casing according to claim 2, wherein: The nut seat (33) is arranged in an inverted "T" shape, and the inner cavity of the mounting groove is adapted to the nut seat (33).

4. A device for treating the interior surface of a flow passage of a compressor casing according to claim 1, wherein: The clamping assembly includes a fixed plate (51), a push cylinder (52), a clamping plate (53), and a rubber extrusion pad (54). The fixed plate (51) is connected to the base (1) and is arranged in a direction perpendicular to the base (1). There are two fixed plates (51) on the base (1), and the two fixed plates (51) are arranged in parallel relative to each other. The push cylinder (52) is connected to the fixed plate (51), and the piston rod of the push cylinder (52) is arranged in a direction perpendicular to the fixed plate (51). The two push cylinders (52) are arranged opposite to each other. The clamping plate (53) is connected to the end of the push cylinder (52) through which the piston rod passes. The rubber extrusion pad is attached to the clamping plate (53), and the rubber extrusion pad (54) is located on the opposite surfaces of the two clamping plates (53).

5. A device for treating the interior surface of a flow passage of a compressor casing according to claim 1, wherein: A limiting platform (11) is connected to the base (1). The limiting platform (11) is arranged along the length direction of the base (1). The flexible metal hose (42) is placed on the limiting platform (11). A limiting groove for the flexible metal hose (42) to pass through is provided on the limiting platform (11). A limiting rod (44) is connected to the housing of the rotating motor (4). There are four limiting rods (44). The four limiting rods (44) are arranged along the circumference of the flexible metal hose (42) and fit against its side wall. A limiting hole for the limiting rods (44) to pass through is provided on the limiting platform (11).

6. A device for treating the interior surface of a flow passage of a compressor casing according to claim 1, wherein: The grinding head (43) is provided with rounded corners, which are located at both ends of the grinding head (43).

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