Shot screening device for shot blasting machine

Abstract

According to the shot screening device for the shot blasting machine, two screening filter screens are arranged, a rotating rod is arranged between the two screening filter screens, a threaded rotating sleeve is arranged on the outer wall of the rotating rod and rotates up and down on the outer wall of the rotating rod, and a plurality of screening spiral blades are arranged on the outer wall of the threaded rotating sleeve; the shot screening treatment assembly conducts first screening work on shots, a conveying pipe is arranged on the outer side of the working barrel, the shot screening treatment assembly is arranged in the conveying pipe, an annular shot baffle is arranged in an inner cavity of the working barrel, the inner area of the annular shot baffle is divided into shot storage cavities, and a fixing ring frame is arranged at the bottom of the annular shot baffle. A matched annular bearing frame is arranged above the fixed annular frame, and shots are conveyed into the working barrel through a conveying pipe. Through the synergistic effect of the shot screening treatment assembly and the storage cavity in the working barrel, twice screening of shots is achieved, and the screening precision and the shot quality are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of shot blasting machine production, and specifically relates to a shot screening device for a shot blasting machine. Background Art

[0002] As is well known, a shot blasting machine is a device that uses high-speed projectiles thrown by a shot blasting device to clean or strengthen the surface of castings; after the projectiles are used to process the workpieces, they are mixed with impurities such as iron filings and dust, and this part of the projectiles needs to be screened to remove the impurities such as iron filings and dust.

[0003] In the existing related technologies, traditional shot screening devices usually only process through a single screening structure, and it is difficult to effectively separate projectiles with unqualified sizes or fine impurities, resulting in poor size consistency of the screened projectiles and unable to meet the requirements of the shot blasting machine for high-precision projectiles.

[0004] At the same time, during the screening process of the existing device, the projectiles are prone to accumulate on the screen, lacking a sufficient dispersion and tumbling mechanism, resulting in uneven screening, and some fine impurities or unqualified projectiles cannot be effectively removed.

[0005] Moreover, in the existing technologies, the conveying process of the projectiles from the screening device to the storage chamber often lacks an effective buffering mechanism. The projectiles may be deformed due to high-speed impact when falling into the storage chamber, or cause wear of the equipment components, affecting the service life of the equipment and the quality of the projectiles. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the existing technology, the present invention provides a shot screening device for a shot blasting machine to at least partially solve the above technical problems.

[0007] The technical solution adopted by the present invention is as follows:

[0008] The present invention provides a shot screening device for a shot blasting machine, including:

[0009] A shot screening and processing component, the shot screening and processing component includes a screening filter screen. There are two groups of the screening filter screens. A rotating rod is arranged between the two groups of screening filter screens. A threaded rotating sleeve is arranged on the outer wall of the rotating rod. The threaded rotating sleeve rotates up and down on the outer wall of the rotating rod. A number of groups of screening spiral blades are arranged on the outer wall of the threaded rotating sleeve. The shot screening and processing component performs the first screening work on the projectiles;

[0010] Working cylinder body, a conveying pipe is arranged on the outer side of the working cylinder body, a projectile screening and processing assembly is arranged inside the conveying pipe, an annular projectile baffle is arranged in the inner cavity of the working cylinder body, the inner area of the annular projectile baffle is divided into a storage cavity for projectiles, a fixed ring frame is arranged at the bottom of the annular projectile baffle, a matching annular bearing frame is arranged above the fixed ring frame, projectiles are conveyed into the working cylinder body through the conveying pipe, projectiles fall on the top of the annular bearing frame, so that the annular bearing frame moves into the inner part of the fixed ring frame.

[0011] In an embodiment of the present invention, bearing seats are arranged on the outer walls of both groups of screening filter meshes, stretching damping rods are arranged on the upper and lower side walls of the threaded rotating sleeve, and the other ends of the stretching damping rods are arranged on the outer walls of the bearing seats.

[0012] In an embodiment of the present invention, a movable top cover is arranged at the top of the working cylinder body, a hot gas pumping pump is arranged above the movable top cover, an air delivery pipe is arranged at the working end of the hot gas pumping pump, there are two groups of the air delivery pipes, and the other ends of the two groups of air delivery pipes sequentially penetrate through the outer wall of the working cylinder body and the inside of the annular projectile baffle. A plurality of through holes are formed in the outer wall of the annular projectile baffle, and a matching miscellaneous material filter mesh is arranged inside the plurality of through holes, the miscellaneous material filter mesh;

[0013] A hot gas pumping pump control button is arranged inside the fixed ring frame, and the hot gas pumping pump is electrically controlled and connected to the hot gas pumping pump control button through a conducting wire.

[0014] In an embodiment of the present invention, a movable bottom cover is arranged at the bottom of the working cylinder body, a pumping pump is arranged above the movable bottom cover, the conveying pipe is arranged at the working end of the pumping pump, there are two groups of the conveying pipes, and the other ends of the two groups of the conveying pipes penetrate through the outer wall of the movable top cover and are arranged in the storage cavity of the annular projectile baffle;

[0015] A pumping pump control button is arranged inside the fixed ring frame, and the pumping pump is electrically controlled and connected to the pumping pump control button through a conducting wire.

[0016] In an embodiment of the present invention, a first servo motor is arranged at the bottom of the movable top cover, a first stirring mesh plate is arranged at the working end of the first servo motor, a second servo motor is arranged at the bottom of the inner cavity of the working cylinder body, a second stirring mesh plate is arranged at the working end of the second servo motor, a linkage shaft is arranged between the first stirring mesh plate and the second stirring mesh plate, the first stirring mesh plate and the second stirring mesh plate are arranged in the storage cavity of the annular projectile baffle to perform a second screening operation on the projectiles, and the driving working rotation directions of the first servo motor and the second servo motor are opposite;

[0017] Inside the fixed ring frame, there is a first servo motor control button, and the first servo motor is electrically controlled and connected to the first servo motor control button through a transmission wire.

[0018] Inside the fixed ring frame, there is a second servo motor control button, and the second servo motor is electrically controlled and connected to the second servo motor control button through a transmission wire.

[0019] In an embodiment of the present invention, multiple sets of compression buffer damping rods are further provided inside the fixed ring frame, and the other ends of the multiple sets of compression buffer damping rods are provided at the bottom of the annular bearing frame.

[0020] The beneficial effects of the technical solution of the present invention are as follows:

[0021] Through the synergistic effect of the projectile screening and processing component and the storage cavity in the working cylinder body, the present invention realizes the two - stage screening of projectiles, improving the screening accuracy and the quality of projectiles. First, the projectile screening and processing component uses the dynamic combination of two sets of screening filter meshes, rotating rods, threaded rotating sleeves, and screening spiral blades to conduct a primary screening of projectiles. The rotating rod drives the threaded rotating sleeve to move up and down. Combining with the spiral pushing effect of the screening spiral blades, the projectiles are fully dispersed and filtered on the screening filter mesh, effectively separating projectiles with unqualified sizes or impurities.

[0022] Subsequently, the projectiles entering the storage cavity of the working cylinder body are subjected to a secondary screening through the first stirring mesh plate and the second stirring mesh plate. The two mesh plates are driven by the first servo motor and the second servo motor, and rotate in opposite directions. Combining with the coordination effect of the linkage shaft, a highly efficient convective stirring effect is formed. The reverse stirring mechanism enables the projectiles to fully tumble in the storage cavity, enhancing the screening uniformity, further removing fine impurities or unqualified projectiles, ensuring that the finally output projectiles have consistent sizes and excellent quality, and meeting the requirements of the shot blasting machine for high - precision projectiles.

[0023] The present invention realizes the automatic conveying and smooth transition of projectiles from screening to storage through the conveying pipe, the pumping - out pump, and the annular bearing frame. The conveying pipe efficiently conveys the primarily screened projectiles to the storage cavity of the working cylinder body. The pumping - out pump realizes the automatic regulation of projectile conveying through the electrical control of the movable bottom cover and the pumping - out pump control button, reducing the need for manual intervention and improving production efficiency.

[0024] Meanwhile, the buffer system composed of the compression buffer damping rods between the annular bearing frame and the fixed ring frame effectively absorbs the impact force generated when the projectiles fall into the storage cavity. After the projectiles fall on the top of the annular bearing frame, the compression buffer damping rods slow down the displacement speed of the frame through elastic deformation, avoiding the deformation of the projectiles caused by high - speed impact or the wear of equipment components.

[0025] Through the collaborative work of a hot gas pumping pump, a gas transmission pipe, and a miscellaneous material filter screen, the present invention realizes the hot gas cleaning and miscellaneous material separation of projectiles. The hot gas pumping pump transports hot gas to the storage cavity of the annular projectile baffle through a movable top cover and a gas transmission pipe. The hot gas circulates through through-holes and the miscellaneous material filter screen, effectively removing oil stains, dust, or other tiny impurities on the surface of the projectiles. The electrical control of the control button of the hot gas pumping pump enables the hot gas treatment process to be flexibly adjusted according to actual needs, with automatic control and adjustment.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the drawings, where:

[0028] Figure 1 is a schematic structural view of the projectile screening and processing assembly of the projectile screening device for a shot blasting machine proposed in an embodiment of the present invention;

[0029] Figure 2 is a schematic structural view of the projectile screening device for a shot blasting machine proposed in an embodiment of the present invention;

[0030] Figure 3 is a front view of the projectile screening device for a shot blasting machine proposed in an embodiment of the present invention;

[0031] Figure 4 is a top view of the projectile screening device for a shot blasting machine proposed in an embodiment of the present invention;

[0032] Figure 5 is a side view of the projectile screening device for a shot blasting machine proposed in an embodiment of the present invention;

[0033] Figure 6 is Figure 3 a sectional view taken along the cutting line A-A in

[0034] Figure 7 is Figure 4 a sectional view taken along the cutting line B-B in

[0035] Figure 8 is Figure 5 a sectional view taken along the cutting line C-C in

[0036] Figure 9 is Figure 3 a sectional view taken along the cutting line D-D in

[0037] In the figure: 1. Shot screening and processing component; 2. Screening filter; 3. Rotating rod; 4. Tensile damping rod; 5. Bearing seat; 6. Threaded rotating sleeve; 7. Screening spiral blade; 8. Working cylinder body; 9. Movable top cover; 10. Ring-shaped shot baffle; 11. Hot gas pumping pump; 12. Air delivery pipe; 13. Miscellaneous material filter screen; 14. First servo motor; 15. First stirring mesh plate; 16. Second servo motor; 17. Second stirring mesh plate; 18. Linkage shaft; 19. Fixed ring frame; 20. Ring-shaped bearing frame; 21. Compression buffer damping rod; 22. Hot gas pumping pump control button; 23. First servo motor control button; 24. Second servo motor control button; 25. Material pumping pump; 26. Material pumping pump control button; 27. Delivery pipe; 28. Movable bottom cover. Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0039] A shot screening device for a shot blasting machine according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0040] As Figures 1 to 9 shown, an embodiment of the present invention provides a shot screening device for a shot blasting machine, including: a shot screening and processing component 1, the shot screening and processing component 1 includes a screening filter 2, there are two groups of screening filters 2, a rotating rod 3 is provided between the two groups of screening filters 2, a threaded rotating sleeve 6 is provided on the outer wall of the rotating rod 3, the threaded rotating sleeve 6 rotates up and down on the outer wall of the rotating rod 3, a plurality of groups of screening spiral blades 7 are provided on the outer wall of the threaded rotating sleeve 6, bearing seats 5 are provided on the outer walls of the two groups of screening filters 2, tensile damping rods 4 are provided on the upper and lower side walls of the threaded rotating sleeve 6, and the other ends of the tensile damping rods 4 are provided on the outer walls of the bearing seats 5. The shot screening and processing component 1 performs the first screening work on the shots;

[0041] A working cylinder body 8, a delivery pipe 27 is provided on the outside of the working cylinder body 8, the shot screening and processing component 1 is provided inside the delivery pipe 27, a ring-shaped shot baffle 10 is provided in the inner cavity of the working cylinder body 8, the inner area of the ring-shaped shot baffle 10 is divided into a storage cavity for shots, a fixed ring frame 19 is provided at the bottom of the ring-shaped shot baffle 10, a ring-shaped bearing frame 20 adapted thereto is provided above the fixed ring frame 19, the shots are transported into the inside of the working cylinder body 8 through the delivery pipe 27, the shots fall on the top of the ring-shaped bearing frame 20, so that the ring-shaped bearing frame 20 moves into the inside of the fixed ring frame 19, and a plurality of groups of compression buffer damping rods 21 are also provided inside the fixed ring frame 19, and the other ends of the plurality of groups of compression buffer damping rods 21 are provided at the bottom of the ring-shaped bearing frame 20.

[0042] In the specific application of the embodiments of the present invention, two groups of screening filters 2 are respectively located at the upper and lower positions of the screening path for grading and screening projectiles. The mesh size of each group of screening filters 2 is optimized according to the actual screening requirements to meet the separation requirements of projectiles with different particle sizes. A bearing seat 5 is fixedly arranged on the outer wall of the screening filter 2 to support the rotating rod 3 and other dynamic components, ensuring the stability of the screening process. The rotating rod 3 penetrates between the two groups of screening filters 2 and is arranged along its axial direction. Its outer wall is provided with a threaded structure. A threaded rotating sleeve 6 is sleeved on the outer wall of the rotating rod 3 and realizes reciprocating up and down movement along the axial direction of the rotating rod 3 through thread engagement. Multiple groups of screening spiral blades 7 are evenly distributed on the outer wall of the threaded rotating sleeve 6. The spiral blades apply a dynamic thrust to the projectiles during rotation, promoting the full dispersion and screening of the projectiles on the screening filter 2 and preventing the projectiles from accumulating or blocking the mesh holes. The upper and lower side walls of the threaded rotating sleeve 6 are respectively connected with tension damping rods 4. The other ends of the tension damping rods 4 are fixed on the bearing seat 5 on the outer wall of the screening filter 2. The tension damping rods 4 provide a damping force when the threaded rotating sleeve 6 moves up and down, slowing down its movement speed and preventing uneven screening or excessive mechanical vibration caused by rapid movement, thereby improving the screening accuracy and the operation stability of the device.

[0043] An annular projectile baffle 10 is arranged in the inner cavity of the working cylinder 8, and its internal area is divided into a projectile storage cavity for temporarily storing the screened projectiles. The annular shape of the annular projectile baffle 10 effectively prevents the projectiles from spreading towards the edge of the cylinder during storage, ensuring the centralized storage of the projectiles and facilitating subsequent transportation or use. A fixed ring frame 19 is arranged at the bottom of the annular projectile baffle 10, and a matching annular bearing frame 20 is configured above it. The annular bearing frame 20 can move up and down along the inner wall of the fixed ring frame 19, forming a dynamic bearing structure. When the projectiles fall onto the top of the annular bearing frame 20 through the conveying pipe 27, the weight of the projectiles causes it to move downward and enter the internal storage area of the fixed ring frame 19.

[0044] Multiple groups of compression buffer damping rods 21 are arranged inside the fixed ring frame 19. One end of each compression buffer damping rod 21 is fixed on the inner wall of the fixed ring frame 19, and the other end is connected to the bottom of the annular bearing frame 20. The compression buffer damping rods 21 provide a buffer force when the annular bearing frame 20 moves downward under the gravity of the projectiles, slowing down its downward movement speed and avoiding the blockage of the storage cavity or the collision damage of the projectiles caused by the rapid accumulation of the projectiles. At the same time, the elastic restoring force of the compression buffer damping rods 21 can push the annular bearing frame 20 to reset upward when the projectiles decrease, maintaining the dynamic balance of the storage cavity.

[0045] The projectiles enter the projectile screening and processing assembly 1 through the conveying pipe 27. Driven by the rotating rod 3, the threaded rotating sleeve 6 drives the screening spiral blades 7 to rotate, pushing the projectiles to move dispersedly along the surface of the screening filter 2. The projectiles that meet the mesh size pass through the screening filter 2 and enter the next-level processing. The tension damping rods 4 provide a damping force during the screening process, ensuring the smooth and efficient screening process.

[0046] The projectiles that have undergone the initial screening enter the inside of the annular projectile baffle 10 of the working cylinder body 8 through the conveying pipe 27 and fall onto the top of the annular bearing frame 20. The weight of the projectiles causes the annular bearing frame 20 to move downward along the fixed ring frame 19, compressing the buffer damping rod 21 to provide a buffer force and slowing down the downward movement speed to ensure that the projectiles are smoothly stacked in the storage cavity.

[0047] When the projectiles are taken out or reduced, the elastic restoring force of the buffer damping rod 21 pushes the annular bearing frame 20 to reset upward, maintaining the dynamic balance of the storage cavity and preparing for the next round of projectile storage.

[0048] In a possible implementation manner, a movable top cover 9 is provided at the top of the working cylinder body 8. Above the movable top cover 9, a hot gas pumping pump 11 is provided. The working end of the hot gas pumping pump 11 is provided with an air conveying pipe 12. There are two groups of air conveying pipes 12. The other ends of the two groups of air conveying pipes 12 sequentially penetrate through the outer wall of the working cylinder body 8 and the inside of the annular projectile baffle 10. A plurality of groups of through holes are formed in the outer wall of the annular projectile baffle 10, and a plurality of groups of matching miscellaneous material filter meshes 13 are arranged inside the plurality of groups of through holes; a hot gas pumping pump control button 22 is arranged inside the fixed ring frame 19, and the hot gas pumping pump 11 is electrically controlled and connected to the hot gas pumping pump control button 22 through a conducting wire.

[0049] In the specific application of the embodiment of the present invention, a movable top cover 9 is provided at the top of the working cylinder body 8. The top cover is set to be a structure that can be opened or closed, which is convenient for operators to maintain, clean or load and unload projectiles inside the working cylinder body 8. The setting of the movable top cover 9 not only improves the operation convenience of the device, but also ensures the sealing performance of the working cylinder body 8 during operation, preventing projectiles or impurities from leaking out, and at the same time providing a stable sealed environment for the hot gas pumping component. Above the movable top cover 9, the device is equipped with a hot gas pumping pump 11 for extracting the hot gas or dust generated inside the working cylinder body 8 due to projectile screening. The working end of the hot gas pumping pump 11 is connected with an air conveying pipe 12. The air conveying pipe 12 is divided into two groups, respectively extending from the hot gas pumping pump 11 to the inside of the working cylinder body 8. The other ends of the two groups of air conveying pipes 12 sequentially penetrate through the outer wall of the working cylinder body 8 and the inside of the annular projectile baffle 10 to form a hot gas circulation channel, ensuring that the hot gas can be efficiently extracted and directionally transmitted, avoiding the accumulation of hot gas inside the working cylinder body 8, thereby reducing the decline of equipment performance caused by high temperature or dust accumulation.

[0050] Inside the working cylinder body 8, there is a ring-shaped projectile baffle 10. This baffle is of a ring structure, and multiple groups of through holes are opened on its outer wall. Each group of through holes is embedded with a matching miscellaneous material filter net 13. The ring-shaped projectile baffle 10 is used to guide the movement trajectory of the projectiles during the screening process. At the same time, through the combination of the through holes and the miscellaneous material filter net 13, the effective separation of impurities in the projectiles is realized. The miscellaneous material filter net 13 adopts a mesh structure matching the size of the through holes, which can efficiently intercept dust, debris or other non-target particulate matters in the projectiles, and at the same time allow qualified projectiles to pass through.

[0051] Inside the fixed ring frame 19 of the device, there is a hot gas pumping pump control button 22. The hot gas pumping pump 11 is electrically controlledly connected to the hot gas pumping pump control button 22 through a transmission wire. When the projectiles fall onto the top of the ring-shaped bearing frame 20, the weight of the projectiles causes the ring-shaped bearing frame 20 to move downward along the fixed ring frame 19. The ring-shaped bearing frame 20 presses the hot gas pumping pump control button 22 to start or stop the hot gas pumping pump 11, thereby adjusting the operating state of the hot gas pumping, improving the automation level of the device, and at the same time ensuring the stability and safety of the hot gas treatment component.

[0052] In a possible implementation manner, the bottom of the working cylinder body 8 is provided with a movable bottom cover 28. Above the movable bottom cover 28, there is a material pumping pump 25. A conveying pipe 27 is arranged at the working end of the material pumping pump 25. There are two groups of the conveying pipes 27. The other ends of the two groups of conveying pipes 27 penetrate through the outer wall of the movable top cover 9 and are arranged in the storage cavity of the ring-shaped projectile baffle 10; inside the fixed ring frame 19, there is a material pumping pump control button 26. The material pumping pump 25 is electrically controlledly connected to the material pumping pump control button 26 through a transmission wire.

[0053] In the specific application of the embodiment of the present invention, the bottom of the working cylinder body 8 is provided with a movable bottom cover 28. The movable bottom cover 28 adopts a structure that can be opened or closed, corresponding to the setting of the movable top cover 9 at the top, and together they form a two-way operable sealing system of the working cylinder body 8, which is convenient for the operator to clean and maintain the bottom of the working cylinder body 8. Above the movable bottom cover 28, a material pumping pump 25 is configured. The working end of the material pumping pump 25 is connected with a conveying pipe 27. The conveying pipe 27 is divided into two groups, respectively extending from the material pumping pump 25 to the top of the working cylinder body 8. The other ends of the two groups of conveying pipes 27 penetrate through the outer wall of the movable top cover 9 and are directly communicated to the storage cavity inside the ring-shaped projectile baffle 10. The conveying path utilizes the storage function of the ring-shaped projectile baffle 10 to efficiently extract and convey the screened projectiles from the bottom of the working cylinder body 8 to the top storage cavity, realizing the directional collection and temporary storage of the projectiles. The double-group configuration of the conveying pipe 27 improves the conveying efficiency, ensures the stability of the projectiles during the conveying process, and reduces the possibility of blockage or leakage.

[0054] The storage cavity of the annular projectile baffle 10 can effectively accommodate the screened projectiles transmitted from the conveying pipe 27. The storage cavity is docked with the conveying pipe 27, which not only realizes the efficient collection of projectiles but also provides convenience for the subsequent reuse or output of projectiles. A material pumping control button 26 is added inside the fixed ring frame 19 of the device. The material pumping pump 25 is electrically controlledly connected to the material pumping control button 26 through a transmission wire. When the projectiles fall onto the top of the annular bearing frame 20, the weight of the projectiles causes the annular bearing frame 20 to move downward along the fixed ring frame 19, and the annular bearing frame 20 presses the material pumping control button 26 to start or stop the material pumping pump 25, thereby flexibly adjusting the operating state of projectile conveying.

[0055] In a possible implementation manner, a first servo motor 14 is provided at the bottom of the movable top cover 9. A first stirring mesh plate 15 is provided at the working end of the first servo motor 14. A second servo motor 16 is provided at the bottom of the inner cavity of the working cylinder 8. A second stirring mesh plate 17 is provided at the working end of the second servo motor 16. A linkage shaft 18 is provided between the first stirring mesh plate 15 and the second stirring mesh plate 17. The first stirring mesh plate 15 and the second stirring mesh plate 17 are arranged in the storage cavity of the annular projectile baffle 10 to perform a second screening operation on the projectiles. The driving rotation directions of the first servo motor 14 and the second servo motor 16 are opposite;

[0056] A first servo motor control button 23 is provided inside the fixed ring frame 19. The first servo motor 14 is electrically controlledly connected to the first servo motor control button 23 through a transmission wire; a second servo motor control button 24 is provided inside the fixed ring frame 19. The second servo motor 16 is electrically controlledly connected to the second servo motor control button 24 through a transmission wire.

[0057] In the specific application of the embodiment of the present invention, at the bottom of the movable top cover 9, a first servo motor 14 is configured, and its working end is connected to the first stirring mesh plate 15; at the same time, at the bottom of the inner cavity of the working cylinder 8, a second servo motor 16 is configured, and its working end is connected to the second stirring mesh plate 17. Both the first stirring mesh plate 15 and the second stirring mesh plate 17 are arranged inside the storage cavity of the annular projectile baffle 10 to stir and screen the projectiles in the storage cavity from the top and the bottom respectively. The driving directions of the two servo motors are opposite, and an opposing shearing force is generated by reverse rotation to enhance the fluidity and dispersion of the projectiles in the storage cavity, thereby achieving a more uniform secondary screening. The two-way stirring effectively avoids the phenomenon of projectile accumulation or adhesion, ensuring the efficiency and thoroughness of the screening process.

[0058] The first stirring screen plate 15 and the second stirring screen plate 17 are connected by a linkage shaft 18, which plays a role in stabilizing the relative positions of the two screen plates and coordinating their movements. The linkage shaft 18 enhances the structural stability of the first stirring screen plate 15 and the second stirring screen plate 17. The linkage shaft 18 enables the stirring actions of the two screen plates to form a unified screening system, optimizing the force distribution of the projectiles in the storage cavity, improving the screening efficiency, and at the same time reducing the problem of uneven screening caused by one-way stirring. The storage cavity of the annular projectile baffle 10 serves as the operation area for secondary screening and works in coordination with the original miscellaneous material filter screen 13 and the through-hole structure. The mesh holes of the first stirring screen plate 15 and the second stirring screen plate 17 match the filtering requirements of the storage cavity, and can further separate the fine impurities or unqualified particles in the projectiles. The reversely rotating stirring screen plates enable the projectiles to be fully exposed to the mesh filtering surface in the storage cavity through dynamic stirring, thereby achieving high-precision secondary screening.

[0059] The device is additionally provided with a first servo motor control button 23 and a second servo motor control button 24 inside the fixed ring frame 19. When the projectiles fall onto the top of the annular bearing frame 20, the weight of the projectiles causes the annular bearing frame 20 to move downward along the fixed ring frame 19. The annular bearing frame 20 presses the first servo motor control button 23 and the second servo motor control button 24 respectively, and adjusts the operating states (such as starting, stopping or speed adjustment) of the first servo motor 14 and the second servo motor 16 respectively, so as to flexibly control the rotation speed and direction of the two stirring screen plates.

[0060] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0061] The above describes the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A shot screening device for a shot blasting machine, characterized in that, Including: A projectile screening and processing component (1), the projectile screening and processing component (1) includes a screening filter screen (2), there are two groups of the screening filter screens (2), a rotating rod (3) is arranged between the two groups of the screening filter screens (2), a threaded rotating sleeve (6) is arranged on the outer wall of the rotating rod (3), the threaded rotating sleeve (6) rotates up and down on the outer wall of the rotating rod (3), a number of groups of screening spiral blades (7) are arranged on the outer wall of the threaded rotating sleeve (6), and the projectile screening and processing component (1) performs the first screening work on projectiles. A working cylinder body (8), a conveying pipe (27) is arranged on the outer side of the working cylinder body (8), the projectile screening and processing component (1) is arranged inside the conveying pipe (27), an annular projectile baffle (10) is arranged in the inner cavity of the working cylinder body (8), the inner area of the annular projectile baffle (10) is divided into a storage cavity for projectiles, a fixed ring frame (19) is arranged at the bottom of the annular projectile baffle (10), a matching annular bearing frame (20) is arranged above the fixed ring frame (19), projectiles are conveyed into the inside of the working cylinder body (8) through the conveying pipe (27), and projectiles fall on the top of the annular bearing frame (20), so that the annular bearing frame (20) moves into the inside of the fixed ring frame (19).

2. The shot screening device for a shot blasting machine according to claim 1, characterized in that, Bearing seats (5) are arranged on the outer walls of both groups of the screening filter screens (2), stretching damping rods (4) are arranged on the upper and lower side walls of the threaded rotating sleeve (6), and the other ends of the stretching damping rods (4) are arranged on the outer walls of the bearing seats (5).

3. The shot screening device for a shot blasting machine according to claim 1, characterized in that, A movable top cover (9) is arranged at the top of the working cylinder body (8), a hot gas pumping pump (11) is arranged above the movable top cover (9), an air conveying pipe (12) is arranged at the working end of the hot gas pumping pump (11), there are two groups of the air conveying pipes (12), and the other ends of the two groups of the air conveying pipes (12) sequentially penetrate through the outer wall of the working cylinder body (8) and the inside of the annular projectile baffle (10), a plurality of groups of through holes are formed in the outer wall of the annular projectile baffle (10), and a matching miscellaneous material filter screen (13) is arranged inside the plurality of groups of through holes, the miscellaneous material filter screen (13); A hot gas pumping pump control button (22) is arranged inside the fixed ring frame (19), and the hot gas pumping pump (11) is electrically controlled and connected to the hot gas pumping pump control button (22) through a conducting wire.

4. The shot screening device for a shot blasting machine according to claim 1, wherein, A movable bottom cover (28) is arranged at the bottom of the working cylinder body (8), a pumping pump (25) is arranged above the movable bottom cover (28), the conveying pipe (27) is arranged at the working end of the pumping pump (25), there are two groups of the conveying pipes (27), and the other ends of the two groups of the conveying pipes (27) penetrate through the outer wall of the movable top cover (9) and are arranged in the storage cavity of the annular projectile baffle (10); A pumping pump control button (26) is arranged inside the fixed ring frame (19), and the pumping pump (25) is electrically controlled and connected to the pumping pump control button (26) through a conducting wire.

5. The shot screening device for a shot blasting machine according to claim 3, characterized in that, A first servo motor (14) is provided at the bottom of the movable top cover (9). A first stirring screen plate (15) is provided at the working end of the first servo motor (14). A second servo motor (16) is provided at the bottom of the inner cavity of the working cylinder (8). A second stirring screen plate (17) is provided at the working end of the second servo motor (16). A linkage shaft (18) is provided between the first stirring screen plate (15) and the second stirring screen plate (17). The first stirring screen plate (15) and the second stirring screen plate (17) are arranged in the storage cavity of the annular projectile baffle (10) to perform a second screening operation on the projectiles. The working rotation directions driven by the first servo motor (14) and the second servo motor (16) are opposite; A first servo motor control button (23) is provided inside the fixed ring frame (19). The first servo motor (14) is electrically controlled and connected to the first servo motor control button (23) through a transmission wire; A second servo motor control button (24) is provided inside the fixed ring frame (19). The second servo motor (16) is electrically controlled and connected to the second servo motor control button (24) through a transmission wire.

6. The shot screening device for a shot blasting machine according to claim 1, characterized in that, A plurality of sets of compression buffer damping rods (21) are further provided inside the fixed ring frame (19). The other ends of the plurality of sets of compression buffer damping rods (21) are provided at the bottom of the annular bearing frame (20).

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