A continuous shot blasting machine for metal castings

Abstract

The present disclosure relates to the technical field of shot blasting machine cleaning, and one embodiment of the present disclosure provides a metal casting continuous shot blasting cleaning machine, which comprises a shell and a connecting cover, the connecting cover is arranged on the shell, a plurality of fixing holes are arranged on the side surface of the connecting cover, a turnover cleaning assembly is arranged in the shell, a backflow conveying assembly is arranged outside the shell, the turnover cleaning assembly comprises a rotating cylinder, the rotating cylinder is rotationally sleeved and connected in the shell, outer frames are arranged on both sides of the shell, a driving motor is installed on one of the outer frames, the output end of the driving motor is connected with the rotating cylinder, and a plurality of air inlet mesh holes are arranged around the outer surface of the rotating cylinder. Through the above technical scheme, the technical problem that shot blasting process is accompanied by a large amount of dust carried by shot and is inconvenient to clean is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of shot blasting cleaning, specifically to a continuous shot blasting cleaning machine for metal castings. Background Technology

[0002] In industries such as machinery manufacturing, auto parts, and construction machinery, metal castings often have impurities such as oxide scale, rust, and oil stains adhering to their surfaces. These need to be removed by shot blasting to improve the surface quality of the castings and the reliability of subsequent painting and welding. Continuous shot blasting machines for metal castings, as highly efficient surface treatment equipment, can achieve continuous cleaning of batches of castings through high-speed shot impact, making them a key link in ensuring production efficiency and product quality.

[0003] Currently, traditional continuous shot blasting machines for metal castings have significant drawbacks. A prominent problem is that the shot carries a large amount of dust during the shot blasting process, which is difficult to clean. During shot blasting, the high-speed impact of the shot on the surface of the casting generates a large amount of metal dust and debris. This dust easily adheres to the surface of the shot and enters the shot storage box, conveying pipeline, and the interior of the shot blaster through the shot circulation system.

[0004] The lack of an effective dust separation and cleaning mechanism leads to dust-laden shot blasting material clogging the circulation system, reducing shot blasting speed and uniformity, and affecting cleaning effectiveness. Simultaneously, dust accumulation inside the equipment not only accelerates component wear and shortens equipment lifespan but also generates significant amounts of dust during shutdown cleaning, polluting the workshop environment and endangering operator health. In continuous production scenarios, frequent shutdowns for dust removal severely disrupt the production process, reduce equipment utilization, and increase maintenance costs. Therefore, developing a continuous shot blasting machine for metal castings that effectively solves the problems of dust-laden shot and its removal has become an urgent need to improve production efficiency and the working environment. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a continuous shot blasting machine for metal castings, which solves the technical problem in the prior art that the shot carries a large amount of dust during the shot blasting process and is inconvenient to clean.

[0006] According to one aspect, at least one embodiment of this disclosure provides a continuous shot blasting machine for metal castings, comprising: The housing and the connecting cover are provided on the housing, and the side surface of the connecting cover is provided with a plurality of fixing holes; A flip-over cleaning assembly is disposed inside the housing; A return flow conveying assembly, wherein the return flow conveying assembly is disposed outside the housing; The flipping cleaning assembly includes a rotating cylinder, which is rotatably connected to the inside of the housing. The housing has an outer frame on both sides, and a drive motor is installed on one of the outer frames. The output end of the drive motor is connected to the rotating cylinder. An air inlet mesh is opened around the outer surface of the rotating cylinder.

[0007] As a further technical solution, a number of material-pulling plates are arranged around the outer surface of the rotating cylinder, the air inlet mesh is distributed at the intervals of the material-pulling plates, an outer cover is provided on the outer surface of the outer shell, and a flip cover is rotatably connected to the outer cover by a pin.

[0008] As a further technical solution, the outer surface of the outer shell is provided with suction mesh holes, the suction mesh holes are located inside the outer cover, the outer surface of the outer cover is provided with suction pipes, and one end of the rotating cylinder is provided with a transmission hole.

[0009] As a further technical solution, an air intake hood is fixed on the outer frame on the other side. The air intake hood is rotatably fitted inside the transmission hole and located inside the rotating cylinder. Several dispersing air holes are opened around the surface of the air intake hood, and an air intake pipe is connected to one end of the air intake hood.

[0010] As a further technical solution, the reflux conveying assembly includes a reflux hood, which is connected to the outer wall of the housing. A conveying pipe is connected to the lower end of the reflux hood, and a conveying auger is installed inside the conveying pipe. The conveying auger is driven to rotate by electricity.

[0011] As a further technical solution, the outer surface of the outer cover is rotatably connected to a locking rod via a pin, and the outer surface of the flip cover is provided with a protrusion, which slides and fits against the inner surface of the locking rod.

[0012] As a further technical solution, a baffle is electrically driven to rotate inside the outer shell, and the baffle is located on one side inside the connecting cover.

[0013] As a further technical solution, the flip cover can rotate downwards by 60° via a pivot pin connection.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the tilting cleaning assembly solves the problem of difficult-to-clean shot-blasting material carrying dust through a gas-solid separation design. The rotating drum drives the material-turning plate to tilt the shot, ensuring thorough cleaning of the castings; high-pressure airflow is evenly blown in through dispersion holes, carrying dust which is discharged through the air inlet mesh and suction mesh, achieving efficient separation of shot and dust. The outer cover and tilting cover work together to prevent dust overflow, improve the cleanliness of the working environment, reduce dust accumulation inside the equipment, extend the service life of components, and ensure stable shot blasting results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 This is another isometric sectional view of this disclosure; In the diagram: 1. Outer shell; 2. Connecting cover; 3. Tilting cleaning assembly; 3-1. Rotating cylinder; 3-2. Outer frame; 3-3. Drive motor; 3-4. Air inlet mesh; 3-5. Material feeding plate; 3-6. Outer cover; 3-7. Tilting cover; 3-8. Suction mesh; 3-9. Suction pipe; 3-10. Transmission hole; 3-11. Air inlet hood; 3-12. Dispersing air hole; 3-13. Air inlet pipe; 4. Return conveying assembly; 4-1. Return hood; 4-2. Conveying pipe; 4-3. Conveying auger; 5. Clamping rod; 6. Protrusion; 7. Baffle. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-4 As shown, it illustrates a continuous shot blasting machine for metal castings according to an embodiment of the present disclosure, comprising: The housing 1 and the connecting cover 2 are provided on the housing 1, and the connecting cover 2 has a plurality of fixing holes on its side surface; A flip-up cleaning component 3 is disposed inside the outer casing 1; A return conveying assembly 4 is disposed outside the housing 1; The flipping cleaning assembly 3 includes a rotating cylinder 3-1, which is rotatably fitted inside the outer shell 1. Outer frames 3-2 are provided on both sides of the outer shell 1. A drive motor 3-3 is mounted on one of the outer frames 3-2, and the output end of the drive motor 3-3 is connected to the rotating cylinder 3-1. An air inlet mesh 3-4 is formed around the outer surface of the rotating cylinder 3-1. Several material-pulling plates 3-5 are also arranged around the outer surface of the rotating cylinder 3-1, with the air inlet mesh 3-4 distributed at intervals between the material-pulling plates 3-5. An outer cover 3-6 is provided on the outer surface of the outer shell 1, and the outer cover 3-6 has a through-hole. A flip cover 3-7 is rotatably connected via a pin. A suction mesh 3-8 is provided on the outer surface of the outer shell 1. The suction mesh 3-8 is located inside the outer cover 3-6. A suction pipe 3-9 is provided on the outer surface of the outer cover 3-6. A transmission hole 3-10 is provided at one end of the rotating cylinder 3-1. An air inlet hood 3-11 is fixed on the outer frame 3-2 on the other side. The air inlet hood 3-11 is rotatably fitted inside the transmission hole 3-10 and located inside the rotating cylinder 3-1. Several dispersing air holes 3-12 are provided around the surface of the air inlet hood 3-11. An air inlet pipe 3-13 is connected to one end of the air inlet hood 3-11.

[0024] In some examples, a tilting cleaning assembly 3 is designed to achieve shot separation, collection, and cleaning. This assembly includes a rotating cylinder 3-1 inside the outer shell 1, which is rotatably mounted via bearings and extends to the outside of the outer shell 1 at both ends. Outer frames 3-2 on both sides of the outer shell 1 are fixed with bolts. The output end of a drive motor 3-3 on one outer frame 3-2 is connected to one end of the rotating cylinder 3-1 via a coupling to drive its rotation. Material-distributing plates 3-5 are evenly distributed axially around the outer surface of the rotating cylinder 3-1 and welded to the cylinder wall. The plates are arc-shaped and can tilt the internal shot as the rotating cylinder 3-1 rotates. Air inlet mesh holes 3-4 are evenly distributed at the intervals of the material-distributing plates 3-5 to facilitate airflow. An outer cover 3-6 on the outer surface of the outer shell 1 is welded to cover the suction mesh holes 3-8. The suction mesh holes 3-8 are densely distributed in the area of ​​the outer shell 1 corresponding to the rotating cylinder 3-1. The suction pipes 3-9 on the outer surface of the outer cover 3-6 are connected via flanges and can be connected to external negative pressure equipment. On the other side, the air intake hood 3-11 on the outer frame 3-2 is cylindrical and is mounted in the transmission hole 3-10 of the rotating cylinder 3-1 through a bearing. It is in clearance fit with the inner wall of the rotating cylinder 3-1. The dispersion holes 3-12 on the surface of the hood are evenly distributed. The air intake pipe 3-13 at one end is connected by a flange and can be connected to high-pressure airflow.

[0025] During operation, the casting enters the rotating drum 3-1, and the drive motor 3-3 drives the rotating drum 3-1 to rotate. The feed plate 3-5 continuously flips the incoming shot, and the air inlet pipe 3-13 introduces high-pressure airflow, which is evenly blown into the rotating drum 3-1 through the dispersion air holes 3-12 of the air inlet hood 3-11. The airflow carries the debris generated by shot blasting and enters the space between the outer shell 1 and the rotating drum 3-1 through the air inlet mesh 3-4 of the rotating drum 3-1. The external negative pressure equipment draws air through the suction pipe 3-9, and the airflow enters the suction pipe 3-9 through the suction mesh 3-8 of the outer shell 1 and the outer cover 3-6, carrying away the debris and achieving cleaning and separation. The rotation of the rotating drum 3-1 and the flipping of the material-pushing plate 3-5 ensure that all parts of the casting are cleaned, avoiding cleaning dead spots; the dispersion holes 3-12 of the air inlet hood 3-11 ensure even distribution of high-pressure airflow, enhancing the cleaning effect; the cooperation of the air inlet mesh 3-4 and the suction mesh 3-8 forms a directional airflow channel, improving the separation efficiency of shot and debris; the outer cover 3-6 ensures concentrated airflow and prevents dust from overflowing. This component achieves comprehensive cleaning of shot through a combination of mechanical flipping and airflow conduction.

[0026] like Figures 1-4 As shown in the figure, the reflux conveying assembly 4 in this embodiment includes a reflux hood 4-1, which is connected to the outer wall of the housing 1. The lower end of the reflux hood 4-1 is connected to a conveying pipe 4-2, and a conveying auger 4-3 is provided inside the conveying pipe 4-2. The conveying auger 4-3 is driven to rotate by electricity.

[0027] In some examples, a return conveying assembly 4 is designed to achieve the recycling and reuse of shot. This assembly includes an outer cover 3-6 fixedly connected to the outer wall of the outer shell 1 by welding, communicating with the interior of the outer shell 1, and collecting shot separated from the overturning cleaning assembly 3. The conveying pipe 4-2 at the lower end of the outer cover 3-6 is inclined and connected to the outer cover 3-6 by a flange to form a shot conveying channel. The conveying auger 4-3 inside the conveying pipe 4-2 is rotatably connected by bearings, and one end is connected to the motor output end by a coupling, driven by electricity. The auger blades are clearance-fitted with the inner wall of the pipe, which can push the shot along the pipe.

[0028] During operation, the shot separated from the tilting cleaning component 3 enters the return hood 4-1 under gravity and then falls into the conveying pipe 4-2. The motor drives the conveying auger 4-3 to rotate, and the blades push the shot upwards along the inclined conveying pipe 4-2, conveying it to the feed inlet of the shot blasting equipment, completing the shot return cycle. The sealed connection between the return hood 4-1 and the conveying pipe 4-2 prevents shot scattering during transport, reducing waste. The screw drive of the conveying auger 4-3 allows for continuous shot transport, meeting the needs of continuous cleaning operations. The inclined angle utilizes gravity to assist shot movement, reducing conveying energy consumption. The clearance fit between the auger blades and the pipe ensures that the shot is fully pushed, avoiding residue. This component, through its sealed spiral conveying structure, achieves efficient shot recovery and recycling, improving resource utilization and reducing production costs.

[0029] For example, such as Figure 1 As shown, the outer surface of the outer cover 3-6 is rotatably connected to the locking rod 5 by a pin, and the outer surface of the flip cover 3-7 is provided with a protrusion 6, which slides and fits against the inner surface of the locking rod 5.

[0030] In some examples, the locking rod 5 on the outer surface of the outer cover 3-6 is rotatably connected by a pin, and the protrusion 6 on the outer surface of the flip cover 3-7 slides and engages with the inner side of the locking rod 5. Rotating the locking rod 5 engages the protrusion 6, securing the flip cover 3-7 in a closed position to prevent dust or shot from spilling out during cleaning. To open, simply rotate the locking rod 5 to disengage it from the protrusion 6; the operation is convenient. This mating structure ensures the sealing of the outer cover 3-6 while facilitating the opening and closing of the flip cover 3-7, making equipment maintenance and casting handling easier.

[0031] For example, such as Figure 3 As shown, a baffle 7 is electrically driven to rotate inside the outer shell 1, and the baffle 7 is located on one side inside the connecting cover 2.

[0032] In some examples, an electrically driven baffle 7, located inside the housing 1 and on one side of the connecting cover 2, controls the speed at which the shot enters the rotating drum 3-1. The baffle 7 rotates to adjust its opening and closing degree, preventing shot accumulation at the inlet and ensuring orderly entry into the rotating drum 3-1, allowing each shot to be fully tumbled and cleaned. Simultaneously, the baffle 7 can be closed when the equipment stops, preventing backflow of shot within the rotating drum 3-1 and improving the stability of equipment operation.

[0033] For example, such as Figure 3 As shown, the flip cover 3-7 can rotate downwards by 60° via the pivot pin connection.

[0034] In some examples, the flip cover 3-7 rotates downwards by 60° via a pin, providing ample space for operation inside the rotating cylinder 3-1. This angle facilitates the insertion or removal of castings without causing the flip cover 3-7 to droop excessively and take up too much space. When open, the flip cover 3-7 can be stably stopped, preventing shaking from affecting operation; when closed, it can accurately return to its original position, ensuring a tight seal with the outer cover 3-6, balancing operational convenience and equipment sealing.

[0035] In actual use: the metal casting enters the rotating drum 3-1, and the drive motor 3-3 drives it to rotate. The feed plate 3-5 continuously turns the internal shot to clean the casting. High-pressure airflow is introduced through the air inlet pipe 3-13 and evenly blown into the rotating drum 3-1 through the dispersion air holes 3-12 of the air inlet hood 3-11. The airflow carrying dust enters the gap between the outer shell 1 and the rotating drum 3-1 through the air inlet mesh 3-4. The external negative pressure equipment removes the dust through the suction pipe 3-9 and the suction mesh 3-8. The cleaned shot falls into the return hood 4-1 and is transported back to the equipment for recycling through the conveying auger 4-3 in the conveying pipe 4-2. The flip cover 3-7 can be opened for easy maintenance. The clamping rod 5 and the protrusion 6 cooperate to fix its closed state, realizing continuous cleaning and dust separation throughout the process.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A continuous shot blasting machine for metal castings, characterized in that, include: The outer shell (1) and the connecting cover (2) are provided on the outer shell (1), and the side surface of the connecting cover (2) is provided with a plurality of fixing holes; A flip-over cleaning assembly (3) is disposed inside the housing (1); A return conveying assembly (4) is disposed outside the housing (1); The flipping cleaning assembly (3) includes a rotating cylinder (3-1), which is rotatably mounted inside the outer shell (1). Both sides of the outer shell (1) are provided with outer frames (3-2), and a drive motor (3-3) is installed on one of the outer frames (3-2). The output end of the drive motor (3-3) is connected to the rotating cylinder (3-1). An air inlet mesh (3-4) is opened around the outer surface of the rotating cylinder (3-1).

2. The continuous shot blasting machine for metal castings according to claim 1, characterized in that, The outer surface of the rotating cylinder (3-1) is provided with a number of material feeding plates (3-5), and the air inlet mesh (3-4) is distributed at the intervals of the material feeding plates (3-5). The outer surface of the outer shell (1) is provided with an outer cover (3-6), and a flip cover (3-7) is rotatably connected to the outer cover (3-6) by a pin.

3. The continuous shot blasting machine for metal castings according to claim 2, characterized in that, The outer surface of the outer shell (1) is provided with a suction mesh hole (3-8), the suction mesh hole (3-8) is located inside the outer cover (3-6), the outer surface of the outer cover (3-6) is provided with a suction pipe (3-9), and one end of the rotating cylinder (3-1) is provided with a transmission hole (3-10).

4. The continuous shot blasting machine for metal castings according to claim 3, characterized in that, An air intake hood (3-11) is fixed on the outer frame (3-2) on the other side. The air intake hood (3-11) is rotatably fitted in the transmission hole (3-10) and located in the rotating cylinder (3-1). Several dispersion air holes (3-12) are opened around the surface of the air intake hood (3-11). One end of the air intake hood (3-11) is connected to an air intake pipe (3-13).

5. A continuous shot blasting machine for metal castings according to claim 1, characterized in that, The return conveying assembly (4) includes a return hood (4-1), which is connected to the outer wall of the outer shell (1). The lower end of the return hood (4-1) is connected to a conveying pipe (4-2), and a conveying auger (4-3) is provided inside the conveying pipe (4-2). The conveying auger (4-3) is driven to rotate by electricity.

6. A continuous shot blasting machine for metal castings according to claim 2, characterized in that, The outer surface of the outer cover (3-6) is rotatably connected to the locking rod (5) by a pin, and the outer surface of the flip cover (3-7) is provided with a protrusion (6), which slides and fits against the inner surface of the locking rod (5).

7. A continuous shot blasting machine for metal castings according to claim 1, characterized in that, The outer shell (1) is connected to a baffle (7) via electric drive, and the baffle (7) is located on one side inside the connecting cover (2).

8. A continuous shot blasting machine for metal castings according to claim 2, characterized in that, The flip cover (3-7) can rotate downwards by 60° via the pivot connection.

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