A steel shot sieving device

Abstract

The utility model discloses a kind of steel sand screening equipment of throwing shot, belong to the field of throwing shot equipment.Its technical scheme is, a kind of steel sand screening equipment of throwing shot, including screening subassembly, further including lifting assembly, lifting assembly includes elevator, the lower end of elevator is equipped with steel sand recovery bin, lifting device is equipped in the inside of elevator, the upper end of elevator is equipped with elevator sand outlet, screening subassembly is installed in the lateral surface of the shell of elevator, the below of elevator sand outlet is equipped with conveying pipe, conveying pipe is obliquely arranged, the lower end of conveying pipe is connected with screening subassembly, the lower end of screening subassembly is equipped with sand outlet pipe.This scheme is integrated with lifting assembly and screening subassembly, the distance between the steel sand recovery bin of equipment whole and conveying pipe is shortened by lifting assembly ingeniously, so that the device can be directly set beside throwing shot equipment, to achieve real-time regeneration, ensure the continuity of production.

Description

Technical Field

[0001] This utility model relates to the field of shot blasting equipment, and in particular to a shot blasting steel grit screening device. Background Technology

[0002] In the heavy truck manufacturing process, shot blasting is a key step in ensuring the surface quality of parts. Its core function is to clean and strengthen the surface of heavy truck parts with steel shot. The impact of steel shot removes impurities such as oxide scale, rust, and oil stains from the surface of the parts, while enhancing the surface hardness and fatigue strength of the parts. This lays a good foundation for subsequent processing, assembly and painting processes, and directly affects the performance stability and service life of the heavy truck.

[0003] With the expansion of heavy-duty truck production scale and the increasing demands for production efficiency, the need for recycled shot blasting steel grit is becoming increasingly prominent. During shot blasting, steel grit is continuously consumed, but most of it is temporarily unusable only due to contamination with dust, impurities, or partial wear. Directly replacing it with new steel grit would result in significant resource waste; moreover, frequent purchases of new steel grit would significantly increase production costs for enterprises. Therefore, realizing the recycling and reuse of steel grit has become an important direction for reducing energy consumption and controlling costs in heavy-duty truck production.

[0004] The existing process for recycling shot blasting steel grit requires centralized collection, transportation, and screening. The equipment functions are dispersed, and the collection, screening, and transportation processes are independent of each other, which can easily lead to a mismatch between steel grit supply and consumption. Summary of the Invention

[0005] This invention addresses the problem that the current steel shot recycling process requires centralized collection and processing, which easily leads to a mismatch between steel shot supply and consumption. It provides a shot blasting steel shot screening device.

[0006] To solve the above problems, the technical solution adopted by this utility model is a shot blasting steel grit screening device, including a screening component and a lifting component. The lifting component includes a hoist, which is vertically installed. A steel grit recovery bin is located at the lower end of the hoist and is connected to the interior of the hoist. A lifting device is installed inside the hoist, and a sand outlet is located at the upper end of the hoist. The screening component is installed on the side of the hoist's outer shell. A conveying pipe is located below the sand outlet of the hoist and is inclined. The lower end of the conveying pipe is connected to the screening component, and a sand outlet pipe is located at the lower end of the screening component. This solution integrates screening and collection functions, and by setting up a lifting component and integrating the lifting component and screening component, the distance between the steel grit recovery bin and the conveying pipe of the overall equipment is cleverly shortened using the lifting component. This allows the device to be directly installed next to the shot blasting equipment, enabling the collection of used steel grit while simultaneously conveying regenerated steel grit back to the shot blasting equipment, achieving real-time regeneration and ensuring continuous production.

[0007] As a preferred embodiment of shot blasting steel grit screening equipment, the screening component includes a housing, inside which a drum screen is installed. The housing and the drum screen are inclined. A steel grit screening inlet is located on the higher side of the housing, and a conveying pipe is connected to the steel grit screening inlet. The steel grit screening inlet is connected to the higher side of the drum screen via a conveying trough. A sand receiving box is located on the lower side inside the housing, with the lower end of the drum screen located above the sand receiving box. A sand discharge pipe is connected to the sand receiving box. By inclinedly setting the housing and drum screen, combined with the conveying trough, steel grit is accurately guided into the higher side of the drum screen. Gravity causes the steel grit to roll naturally inside the drum screen, prolonging the contact time between the steel grit and the screen mesh and improving screening accuracy. At the same time, the sand receiving box accurately receives the qualified steel grit after screening and efficiently outputs it through the sand discharge pipe, avoiding the accumulation or spillage of steel grit during the screening process, further ensuring the continuity and stability of steel grit regeneration and reducing steel grit loss.

[0008] As a preferred embodiment of shot blasting steel sand screening equipment, a first motor is installed on the housing, and a screen drive shaft is located at the center of the drum screen. The screen drive shaft is mounted on the housing via a first bearing seat. Both the output shaft of the first motor and the screen drive shaft are equipped with first sprockets, and a first chain is wound around both first sprockets. The first motor drives the screen drive shaft to rotate via the sprockets and chain, resulting in a stable and reliable transmission method with high power transmission efficiency. This ensures that the drum screen maintains a uniform rotation speed, avoiding fluctuations in screening efficiency due to insufficient power or transmission slippage. Simultaneously, the first bearing seat reduces frictional resistance during screen drive shaft rotation, lowers equipment operating noise and component wear, extends the service life of screening components, and reduces equipment maintenance costs.

[0009] In a preferred embodiment of a shot blasting steel grit screening device, the first motor, the first sprocket, and the first chain are all located on the high side of the housing, and a first chain protection box is provided outside the first chain. Concentrating the power components on the high side of the housing prevents dust and impurities falling during screening from directly adhering to the motor, sprocket, and chain, reducing component contamination and corrosion. The first chain protection box effectively isolates external debris, preventing chain malfunctions due to obstruction during operation, and also prevents operators from contacting the running chain, improving equipment safety and ensuring smooth production operations.

[0010] As a preferred embodiment of shot blasting steel grit screening equipment, the lower side of the housing is also provided with an ash outlet, which is located below the sand discharge pipe. By setting the ash outlet on the lower side of the housing and below the sand discharge pipe, gravity can be used to naturally collect the dust and impurities separated by screening to the lower side and discharge them through the ash outlet, achieving efficient separation of qualified steel grit and waste, and avoiding the accumulation of waste in the housing to block the screen or contaminate the screened qualified steel grit; at the same time, the position of the ash outlet is lower than the sand discharge pipe, which can prevent the discharged waste from being mixed back into the qualified steel grit conveyed below, further improving the quality of recycled steel grit and ensuring the shot blasting effect.

[0011] As a preferred embodiment of shot blasting steel grit screening equipment, the lifting device includes an upper pulley and a lower pulley located inside the elevator. A conveyor belt is wound around both the upper and lower pulleys, and multiple lifting buckets are arranged around the outer periphery of the conveyor belt. The steel grit is received and transported in batches through the multiple lifting buckets on the conveyor belt. Compared with traditional conveying methods, the lifting buckets effectively prevent steel grit from slipping during the lifting process, increasing the conveying volume and efficiency. Simultaneously, the cooperation between the upper and lower pulleys ensures smooth operation of the conveyor belt, adapting to the lifting requirements of steel grit with different particle sizes, ensuring a stable supply of steel grit from the steel grit recovery bin to the elevator outlet, providing a continuous and sufficient supply for subsequent screening processes.

[0012] As a preferred embodiment of a shot blasting steel sand screening equipment, a slide block is installed on the outer shell of the elevator. The upper pulley is mounted on the slide block via a second bearing seat. An adjusting screw is fixedly installed on the slide block, and an adjusting nut is rotatably installed on the outer shell of the elevator. The adjusting screw and the adjusting nut are threadedly connected. A fastening bolt is also provided between the slide block and the outer shell of the elevator. The lower pulley is mounted on the outer shell of the elevator via a third bearing seat. The adjustment nut and adjusting screw work together to move the slide block up and down, thereby adjusting the position of the upper pulley and flexibly adjusting the tension of the conveyor belt. This prevents slippage due to an overly loose belt or damage to components due to an overly tight belt. The fastening bolt fixes the position of the slide block after the belt tension is adjusted, ensuring that the conveyor belt always operates stably. The second and third bearing seats further reduce pulley rotation friction, improve the operational stability of the lifting device, and reduce the equipment failure rate.

[0013] As a preferred embodiment of shot blasting steel grit screening equipment, the elevator casing has a motor bracket on its side, on which a second motor is mounted. Both the output shaft of the second motor and the shaft of the upper pulley are equipped with second sprockets. A second chain is wound around both second sprockets, and a second chain protection box is provided on the outside of the second chain. The motor bracket provides a stable mounting base for the second motor, ensuring the stability of the motor during operation and preventing vibration from affecting power transmission. The transmission method between the sprockets and the chain allows for precise control of the upper pulley speed, thereby adjusting the steel grit lifting speed to match the steel grit consumption rate of the shot blasting equipment. The second chain protection box effectively protects the chain, preventing dust and steel grit particles from entering the chain meshing points, causing wear or jamming, extending the service life of transmission components, and improving the operational safety of the equipment.

[0014] As a preferred embodiment of shot blasting steel grit screening equipment, the elevator casing is equipped with an observation window. This observation window allows operators to monitor the steel grit conveying status inside the elevator in real time, including steel grit levels, the operating status of the lifting hopper, and whether there are any blockages. The internal operating conditions can be monitored without disassembling the equipment, facilitating timely detection and handling of abnormalities, reducing equipment downtime for inspection, ensuring the continuity of the steel grit lifting process, and improving overall production efficiency.

[0015] As a preferred embodiment of shot blasting steel grit screening equipment, the steel grit recovery bin is equipped with a filter screen. Inside the elevator, the steel grit recovery bin is connected to a guide pipe that extends downwards. The filter screen filters the recovered steel grit, intercepting large impurities in advance to prevent them from entering the elevator and causing blockage or damage to the lifting device, thus reducing the processing load on subsequent screening components. The downward-extending guide pipe guides the pre-filtered steel grit to fall precisely into the lifting hopper inside the elevator, preventing steel grit from accumulating at the elevator inlet and ensuring smooth entry of steel grit into the lifting stage. This further improves the efficiency of steel grit recovery and conveying, and ensures the smooth operation of the overall equipment.

[0016] As can be seen from the above technical solutions, the advantages of this utility model are as follows: This equipment integrates the lifting component and the screening component, shortens the distance between the steel shot recovery bin and the conveying pipe with the help of a vertical elevator, and can be directly arranged near the shot blasting equipment to achieve real-time collection, regeneration, and return of steel shot after use, ensuring continuous production; In terms of screening accuracy and efficiency, the inclined box and drum screen, together with the conveying trough, extend the contact time between the steel shot and the screen mesh, and combined with the stable transmission driven by the first motor via sprocket and chain, improve screening accuracy and efficiency. At the same time, the first bearing seat reduces friction, lowers noise and component wear, extends the life of the screening component, and reduces maintenance costs; In terms of impurity separation and steel shot quality assurance, the ash outlet on the lower side of the box uses gravity to achieve efficient separation of dust, impurities, and qualified steel shot, avoiding waste accumulation and blockage. The steel shot recovery bin's filter screen can intercept large impurities in advance, reducing the load on subsequent processing. Regarding stability and adaptability, the lifting hopper prevents steel shot from slipping, increasing conveying capacity and efficiency. The sliding block, adjusting screw, and nut allow for flexible adjustment of the conveyor belt tension. The sprocket and chain drive of the second motor precisely controls the lifting speed, adapting to the steel shot consumption requirements of shot blasting equipment. In terms of operational safety and convenience, the first and second chain protection boxes isolate debris and protect moving parts, preventing personnel contact risks. The observation window on the lifting machine's outer casing allows operators to monitor the internal steel shot conveying and equipment operation in real time, promptly addressing abnormalities and reducing downtime for inspection. Overall, this improves equipment stability, operational safety, and production efficiency, while reducing steel shot loss and production costs. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this patent, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this patent. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the lifting component in a specific embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the lifting device in a specific embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the screening component in a specific embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the drum screen in a specific embodiment of this utility model.

[0023] Explanation of main figure symbols 01. Lifting assembly, 02. Screening assembly, 1. Steel sand recovery bin, 2. Second bearing seat, 3. Third bearing seat, 4. Elevator, 5. Observation window, 6. Adjusting nut, 7. Adjusting screw, 8. Fastening bolt, 9. Second chain protection box, 10. Second motor, 11. Slide, 12. Motor bracket, 13. Elevator sand outlet, 14. Conveying pipe, 15. Upper pulley, 16. Second chain, 17. Lifting hopper, 18. Conveyor belt, 19. Lower pulley, 20. Filter screen, 21. Guide pipe, 22. Sand outlet pipe, 23. Box body, 24. Drum screen, 25. Steel sand screening inlet, 26. Sand receiving box, 27. First motor, 28. Screen drive shaft, 29. Conveying trough, 30. First sprocket, 31. First chain, 32. First chain protection box, 33. Ash outlet, 34. First bearing seat. Detailed Implementation

[0024] To make the objectives, features, and advantages of this patent more apparent and understandable, the technical solutions of this patent will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this patent, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] like Figure 1 As shown, a shot blasting steel grit screening device includes a lifting component 01 and a screening component 02. The integrated arrangement of the two components reduces the overall space occupied by the equipment, facilitates direct placement near shot blasting equipment, and enables real-time recovery and regeneration of steel grit, ensuring continuous production. like Figure 2 , 3As shown, the lifting assembly 01 includes a vertically mounted elevator 4. The lower end of the elevator 4 is connected to a steel shot recovery bin 1. The steel shot recovery bin 1 contains a filter screen 20, which can intercept large impurities in the recovered steel shot in advance, preventing impurities from entering the elevator 4 and causing blockage or damage to the lifting device, thus reducing the processing load of the subsequent screening assembly 02. Furthermore, a downward-extending guide pipe 21 connects the elevator 4 to the steel shot recovery bin 1, guiding the pre-filtered steel shot precisely into the lifting device, preventing steel shot accumulation at the elevator 4 inlet and ensuring smooth steel shot transport. The elevator 4 contains a lifting device consisting of an upper pulley 15, a lower pulley 19, a conveyor belt 18, and multiple lifting hoppers 17. The lifting hoppers 17 effectively prevent steel shot from accumulating during the lifting process. The slippage during the process significantly improves the steel shot conveying capacity and efficiency. The cooperation between the upper pulley 15 and the lower pulley 19 also ensures the smooth operation of the conveyor belt 18, adapting to the lifting needs of steel shot with different particle sizes. The upper pulley 15 is mounted on the slide 11 of the elevator 4 housing via the second bearing seat 2. An adjusting screw 7 is fixed on the slide 11, and the adjusting screw 7 is threadedly engaged with the rotatable adjusting nut 6 on the elevator 4 housing. The cooperation between the adjusting nut 6 and the adjusting screw 7 can drive the slide 11 to move up and down, thereby adjusting the position of the upper pulley 15 and realizing flexible adjustment of the tension of the conveyor belt 18. This avoids slippage caused by the belt being too loose or damage to components caused by being too tight. A fastening bolt 8 is also provided between the slide 11 and the elevator 4 housing to fix the slide after the belt tension is adjusted. Position 11 ensures the conveyor belt 18 operates stably at all times; the lower pulley 19 is mounted on the housing of the elevator 4 via the third bearing seat 3. Both the second bearing seat 2 and the third bearing seat 3 reduce frictional resistance during pulley rotation, lower equipment operating noise and component wear, and extend the service life of the lifting device; a motor bracket 12 is provided on the side of the elevator 4 housing, and a second motor 10 is mounted on the motor bracket 12 to provide stable power to the lifting device. A second sprocket is provided on both its output shaft and the shaft of the upper pulley 15. A second chain 16 with a second chain protection box 9 surrounds both second sprockets. The transmission method of the sprockets and chain can precisely control the speed of the upper pulley 15, thereby adjusting the steel shot lifting speed to match the steel shot consumption rate of the shot blasting equipment. The chain protection box 9 effectively isolates dust, steel shot particles and other debris, preventing debris from entering the chain meshing point and causing wear or jamming, thus extending the life of transmission components. At the same time, it prevents operators from contacting the running chain, improving the safety of equipment use. The elevator 4 is also equipped with an observation window 5, which allows operators to observe the steel shot level inside the elevator 4, the operating status of the lifting hopper 17 and whether there is any blockage in real time. The internal working condition can be grasped without disassembling the equipment, making it easier to detect and deal with abnormalities in a timely manner and reducing equipment downtime for inspection. The elevator 4 is equipped with an elevator sand outlet 13 at the top, and an inclined conveying pipe 14 is located below the elevator sand outlet 13. The inclined conveying pipe 14 can use gravity to assist in the conveying of steel shot, ensuring that the steel shot flows smoothly to the screening component 02.The screening component 02 is installed on the side of the outer shell of the elevator 4, and the lower end of the conveying pipe 14 is connected to the screening component 02 to realize the stable transfer of steel shot between the elevator component 01 and the screening component 02. like Figure 4 , 5 As shown, the screening component 02 includes a housing 23 and a drum screen 24 inside the housing. Both the housing 23 and the drum screen 24 are inclined. Combined with the conveying trough 29, the steel sand can roll naturally from the high side to the low side of the drum screen 24, prolonging the contact time between the steel sand and the screen of the drum screen 24 and greatly improving the screening accuracy. The high side of the housing 23 is provided with a steel sand screening inlet 25. The conveying pipe 14 is connected to the steel sand screening inlet 25. The steel sand screening inlet is connected to the high side of the drum screen 24 through the conveying trough 29, ensuring that the steel sand conveyed by the lifting component 01 can accurately enter the drum screen 24. The high side of the housing 23 is also equipped with a first motor 27, and the center of the drum screen 24 is provided with a passage. The screen drive shaft 28, mounted on the housing 23 via the first bearing seat 34, has first sprockets 30 on both the output shaft of the first motor 27 and the screen drive shaft 28. A first chain 31 with a first chain protection box 32 surrounds both first sprockets 30. The first motor 27 drives the screen drive shaft 28 to rotate the drum screen 24 via the first sprockets 30 and the first chain 31. This transmission method is stable and reliable with high power transmission efficiency, ensuring that the drum screen 24 maintains a uniform rotation speed and avoiding fluctuations in screening efficiency due to insufficient power or transmission slippage. The first bearing seat 34 reduces frictional resistance during the rotation of the screen drive shaft 28, lowering equipment operating noise. To reduce noise and component wear, extend the service life of the screening assembly 02, and reduce equipment maintenance costs; by placing the first motor 27, the first sprocket 30, and the first chain 31 on the high side of the housing 23, dust and impurities falling during screening can be prevented from directly adhering to these power components, reducing component contamination and corrosion. The first chain protection box 32 can further isolate external debris, preventing chain malfunctions due to foreign object blockage during operation, while also preventing operators from contacting the running chain, improving equipment safety; a sand receiving box 26 is located on the low side inside the housing 23, with the lower end of the drum screen 24 located above the sand receiving box 26, which can accurately collect qualified steel sand after screening. To prevent steel shot from spilling and causing losses, the sand receiving box 26 is connected to a sand discharge pipe 22, which facilitates the efficient return of qualified steel shot to the shot blasting equipment. The lower side of the box 23 is also equipped with an ash discharge port 33 located below the sand discharge pipe 22. The dust and impurities separated by screening can be naturally collected to the lower side of the box 23 by gravity and discharged through the ash discharge port 33, realizing the efficient separation of qualified steel shot and waste. This prevents waste from accumulating in the box 23 and clogging the screen or contaminating the screened qualified steel shot. Furthermore, the position of the ash discharge port 33 is lower than the sand discharge pipe 22, which can prevent the discharged waste from being mixed back into the qualified steel shot being transported below, further ensuring the quality of recycled steel shot and ensuring the shot blasting effect.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use this patent. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this patent. Therefore, this patent is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shot blasting steel grit screening device, comprising a screening component (02), characterized in that, It also includes a lifting component (01), which includes a lifting machine (4). The lifting machine (4) is set vertically. The lower end of the lifting machine (4) is provided with a steel sand recovery bin (1). The steel sand recovery bin (1) is connected to the interior of the lifting machine (4). The lifting machine (4) is provided with a lifting device inside. The upper end of the lifting machine (4) is provided with a lifting machine sand outlet (13). The screening component (02) is installed on the side of the outer shell of the lifting machine (4). Below the lifting machine sand outlet (13) is a conveying pipe (14). The conveying pipe (14) is set at an inclination. The lower end of the conveying pipe (14) is connected to the screening component (02). The lower end of the screening component (02) is provided with a sand outlet pipe (22).

2. The shot blasting steel grit screening equipment according to claim 1, characterized in that, The screening assembly includes a box (23), inside which is a drum screen (24). The box (23) and the drum screen (24) are inclined. A steel sand screening inlet (25) is provided on the high side of the box (23). A conveying pipe (14) is connected to the steel sand screening inlet (25). The steel sand screening inlet is connected to the high side of the drum screen (24) through a conveying trough (29). A sand receiving box (26) is provided on the low side inside the box (23). The lower end of the drum screen (24) is located above the sand receiving box (26). A sand discharge pipe (22) is connected to the sand receiving box (26).

3. The shot blasting steel grit screening equipment according to claim 2, characterized in that, A first motor (27) is installed on the housing (23). A screen drive shaft (28) is provided at the center of the drum screen (24). The screen drive shaft (28) is installed on the housing (23) through a first bearing seat (34). A first sprocket (30) is provided on both the output shaft of the first motor (27) and the screen drive shaft (28). A first chain (31) is arranged around the two first sprockets (30).

4. The shot blasting steel grit screening equipment according to claim 3, characterized in that, The first motor (27), the first sprocket (30) and the first chain (31) are all located on the high side of the housing (23), and the first chain (31) is provided with a first chain protection box (32) outside.

5. The shot blasting steel grit screening equipment according to claim 2, characterized in that, The lower side of the box (23) is also provided with an ash outlet (33), which is located below the sand outlet pipe (22).

6. The shot blasting steel grit screening equipment according to claim 1, characterized in that, The lifting device includes an upper pulley (15) and a lower pulley (19) located inside the elevator (4). A conveyor belt (18) is arranged around the upper pulley (15) and the lower pulley (19). Multiple lifting buckets (17) are arranged around the outer periphery of the conveyor belt (18).

7. The shot blasting steel grit screening equipment according to claim 6, characterized in that, A slide block (11) is installed on the outer shell of the hoist (4). The upper pulley (15) is installed on the slide block (11) through a second bearing seat (2). An adjusting screw (7) is fixedly installed on the slide block (11). An adjusting nut (6) is rotatably installed on the outer shell of the hoist (4). The adjusting screw (7) and the adjusting nut (6) are threadedly connected. A fastening bolt (8) is also provided between the slide block (11) and the outer shell of the hoist (4). The lower pulley (19) is installed on the outer shell of the hoist (4) through a third bearing seat (3).

8. The shot blasting steel grit screening equipment according to claim 6, characterized in that, The hoist (4) has a motor bracket (12) on its outer shell side. A second motor (10) is installed on the motor bracket (12). A second sprocket is provided on the output shaft of the second motor (10) and the shaft of the upper pulley (15). A second chain (16) is arranged around the two second sprockets. A second chain protection box (9) is also provided on the outside of the second chain (16).

9. The shot blasting steel grit screening equipment according to claim 6, characterized in that, The hoist (4) has an observation window (5) on its outer casing.

10. The shot blasting steel grit screening equipment according to claim 1, characterized in that, The steel shot recovery bin (1) is equipped with a filter screen (20). Inside the elevator (4), the steel shot recovery bin (1) is connected to a guide pipe (21), which extends downward.

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