Shot screening device for shot blasting machine

Abstract

A shot screening device for a shot blasting machine comprises two groups of screening screens, a rotating rod is provided between the two groups of screening screens, a threaded rotating sleeve is provided on the outer wall of the rotating rod, the threaded rotating sleeve rotates up and down on the outer wall of the rotating rod, and the outer wall of the threaded rotating sleeve is provided with several groups of screening spiral blades. A shot screening processing component performs the first screening of the shot, a delivery pipe is provided on the outside of the working cylinder, the shot screening processing component is arranged inside the delivery pipe, the inner cavity of the working cylinder is provided with an annular shot baffle, the inner area of ​​the annular shot baffle is divided into a storage chamber for the shot, a fixed ring frame is provided at the bottom of the annular shot baffle, and a matching annular bearing frame is provided above the fixed ring frame. The shot is transported to the interior of the working cylinder through the delivery pipe. The present invention realizes two screenings of the shot through the synergistic effect of the shot screening processing component and the storage chamber in the working cylinder, thereby improving the screening accuracy and shot quality.

Description

Technical Field

[0001] The invention belongs to the technical field of shot blasting machine production, in particular to a shot screening device for a shot blasting machine. Background Art

[0002] As we all know, shot blasting machine is a device that uses high-speed projectiles thrown by shot blasting machine to clean or strengthen the surface of castings; after processing the workpiece, the projectiles are mixed with iron filings, dust and other debris. This part of the projectiles needs to be screened to remove iron filings, dust and other debris.

[0003] In the existing related technologies, traditional shot screening devices usually only use a single screening structure for processing, which makes it difficult to effectively separate unqualified shot or fine impurities, resulting in poor consistency in the size of the screened shot, which cannot meet the shot blasting machine's demand for high-precision shot.

[0004] At the same time, during the screening process of the existing device, the projectiles are easily accumulated on the screen, and there is a lack of sufficient dispersion and rolling mechanism, which causes uneven screening and some fine impurities or unqualified projectiles cannot be effectively removed.

[0005] Moreover, in the prior art, the process of transporting the projectiles from the screening device to the storage chamber often lacks an effective buffering mechanism. When the projectiles fall into the storage chamber, they may be deformed due to high-speed impact, or cause wear of 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 prior art, 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, comprising:

[0009] A shot screening and processing assembly includes a screening filter, two groups of which are provided. A rotating rod is provided between the two groups of screening filters. The outer wall of the rotating rod is provided with a threaded rotating sleeve, which rotates up and down on the outer wall of the rotating rod. The outer wall of the threaded rotating sleeve is provided with several groups of screening spiral leaves. The shot screening and processing assembly performs the first screening of the shot.

[0010] A working cylinder, a conveying pipe is provided on the outside of the working cylinder, the shot screening and processing assembly is arranged inside the conveying pipe, the inner cavity of the working cylinder is provided with an annular shot baffle, the internal area of ​​the annular shot baffle is divided into a storage chamber for the shots, a fixed ring frame is provided at the bottom of the annular shot baffle, and a matching annular supporting frame is provided above the fixed ring frame. The shots are conveyed to the inside of the working cylinder through the conveying pipe, and shots fall on the top of the annular supporting frame, so that the annular supporting frame moves toward the inside of the fixed ring frame.

[0011] In one embodiment of the present invention, the outer walls of the two groups of screening screens are provided with bearing seats, the upper and lower side walls of the threaded rotating sleeve are provided with tensile damping rods, and the other ends of the tensile damping rods are provided on the outer walls of the bearing seats.

[0012] In one embodiment of the present invention, a movable top cover is provided on the top of the working cylinder, a hot gas pump is provided above the movable top cover, a gas pipe is provided at the working end of the hot gas pump, two groups of gas pipes are provided, the other ends of the two groups of gas pipes pass through the outer wall of the working cylinder and the interior of the annular projectile baffle in sequence, the outer wall of the annular projectile baffle is provided with multiple groups of through holes, and the interiors of the multiple groups of through holes are provided with corresponding miscellaneous material filters, the miscellaneous material filters;

[0013] A hot air pump control button is provided inside the fixed ring frame, and the hot air pump is electrically controlled and connected to the hot air pump control button through a conductive line.

[0014] In one embodiment of the present invention, a movable bottom cover is provided at the bottom of the working cylinder, a material extraction pump is provided above the movable bottom cover, the delivery pipe is provided at the working end of the material extraction pump, and two groups of delivery pipes are provided. The other ends of the two groups of delivery pipes pass through the outer wall of the movable top cover and are provided in the storage cavity of the annular projectile baffle.

[0015] A pump control button is provided inside the fixed ring frame, and the pump is electrically controlled and connected to the pump control button via a conductive line.

[0016] In one embodiment of the present invention, a first servo motor is provided at the bottom of the movable top cover, a first stirring screen is provided at the working end of the first servo motor, a second servo motor is provided at the bottom of the inner cavity of the working cylinder, a second stirring screen is provided at the working end of the second servo motor, a linkage shaft is provided between the first stirring screen and the second stirring screen, the first stirring screen and the second stirring screen 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] A first servo motor control button is provided inside the fixed ring frame, and the first servo motor is electrically controlled and connected to the first servo motor control button via a conductive line;

[0018] A second servo motor control button is provided inside the fixed ring frame, and the second servo motor is electrically controlled and connected to the second servo motor control button through a conductive line.

[0019] In one embodiment of the present invention, a plurality of groups of compression buffer damping rods are further provided inside the fixed ring frame, and the other ends of the plurality of groups 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:

[0021] The present invention achieves a double screening of pellets through the synergistic effect of the pellet screening assembly and the storage chamber within the working cylinder, improving screening accuracy and pellet quality. First, the pellet screening assembly utilizes a dynamic combination of two screening screens, a rotating rod, a threaded rotary sleeve, and a screening spiral blade to perform an initial screening of the pellets. The rotating rod drives the threaded rotary sleeve up and down, and combined with the spiral propulsion of the screening spiral blade, the pellets are fully dispersed and filtered on the screening screen, effectively separating unqualified pellets or impurities.

[0022] The pellets then enter the working cylinder's storage chamber and undergo secondary screening via the first and second stirring screens. These two screens, driven by the first and second servo motors in opposite directions, coordinate with the linkage shaft to create a highly efficient convection stirring effect. The reverse stirring mechanism causes the pellets to tumble thoroughly within the storage chamber, enhancing screening uniformity and further removing fine impurities or unqualified pellets. This ensures that the final output pellets are of uniform size and quality, meeting the high-precision pellet requirements of the shot blasting machine.

[0023] The present invention realizes the automatic conveying and smooth transition of projectiles from screening to storage through a conveying pipe, a material pump and an annular carrying frame. The conveying pipe efficiently conveys the initially screened projectiles to the storage chamber of the working cylinder. The material pump is electrically controlled by a movable bottom cover and a material pump control button to realize automatic regulation of projectile conveying, reduce the need for manual intervention, and improve production efficiency.

[0024] The compression damping rods between the annular support frame and the fixed ring frame form a buffer system that effectively absorbs the impact force generated when the projectile falls into the storage chamber. After the projectile lands on the top of the annular support frame, the compression damping rods elastically deform to slow the frame's displacement, preventing deformation caused by the high-speed impact of the projectile and wear on equipment components.

[0025] The present invention realizes hot gas cleaning and debris separation of projectiles through the coordinated work of a hot gas pump, an air pipe and a debris filter. The hot gas pump conveys hot gas to the storage cavity of the annular projectile baffle through a movable top cover and an air pipe. The hot gas circulates through the through holes and the debris filter, effectively removing oil, dust or other tiny impurities on the surface of the projectile. The electrical control of the hot gas pump control button allows the hot gas treatment process to be flexibly adjusted according to actual needs and automatically controlled and adjusted.

[0026] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through 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 readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 This is a schematic structural diagram of a shot screening component of a shot screening device for a shot blasting machine according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a shot screening device for a shot blasting machine according to an embodiment of the present invention;

[0030] Figure 3 A front view of a shot screening device for a shot blasting machine according to an embodiment of the present invention;

[0031] Figure 4 A top view of a shot screening device for a shot blasting machine according to an embodiment of the present invention;

[0032] Figure 5 A side view of a shot screening device for a shot blasting machine according to an embodiment of the present invention;

[0033] Figure 6 for Figure 3 A cross-sectional view along the cutting line AA;

[0034] Figure 7 for Figure 4 A cross-sectional view along the cutting line BB;

[0035] Figure 8 for Figure 5 A cross-sectional view along the cutting line CC;

[0036] Figure 9 for Figure 3 Cross-sectional view along the cutting line DD.

[0037] In the figure: 1. Shot screening and processing assembly; 2. Screening filter; 3. Rotating rod; 4. Tensile damping rod; 5. Bearing seat; 6. Threaded rotating sleeve; 7. Screening spiral blade; 8. Working cylinder; 9. Removable top cover; 10. Annular shot baffle; 11. Hot air pump; 12. Air pipe; 13. Miscellaneous material filter; 14. First servo motor; 15. First stirring screen; 16. Second servo motor; 17. Second stirring screen; 18. Linkage shaft; 19. Fixed ring frame; 20. Annular bearing frame; 21. Compression buffer damping rod; 22. Hot air pump control button; 23. First servo motor control button; 24. Second servo motor control button; 25. Extraction pump; 26. Extraction pump control button; 27. Delivery pipe; 28. Removable bottom cover. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting 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] like Figures 1 to 9 As shown, an embodiment of the present invention provides a shot screening device for a shot blasting machine, comprising: a shot screening processing assembly 1, the shot screening processing assembly 1 including a screening filter 2, the screening filter 2 being provided with two groups, a rotating rod 3 being provided between the two groups of screening filter 2, the outer wall of the rotating rod 3 being provided with a threaded rotating sleeve 6, the threaded rotating sleeve 6 being rotated up and down on the outer wall of the rotating rod 3, the outer wall of the threaded rotating sleeve 6 being provided with a plurality of groups of screening spiral leaves 7, the outer walls of the two groups of screening filter 2 being provided with a bearing seat 5, the upper and lower side walls of the threaded rotating sleeve 6 being provided with a tensile damping rod 4, the other end of the tensile damping rod 4 being provided on the outer wall of the bearing seat 5, and the shot screening processing assembly 1 performing the first screening work on the shot;

[0041] The working cylinder 8 has a conveying pipe 27 on the outside of the working cylinder 8, and the shot screening and processing assembly 1 is arranged inside the conveying pipe 27. The inner cavity of the working cylinder 8 is provided with an annular shot baffle 10. The internal area of ​​the annular shot baffle 10 is divided into a storage chamber for the shot. The bottom of the annular shot baffle 10 is provided with a fixed ring frame 19, and a corresponding annular supporting frame 20 is provided above the fixed ring frame 19. The shot is transported to the inside of the working cylinder 8 through the conveying pipe 27, and the top of the annular supporting frame 20 falls, so that the annular supporting frame 20 moves toward the inside of the fixed ring frame 19. A plurality of compression buffer damping rods 21 are also provided inside the fixed ring frame 19, and the other end of the plurality of compression buffer damping rods 21 is provided at the bottom of the annular supporting frame 20.

[0042] In a specific application of the embodiment of the present invention, two groups of screening screens 2 are respectively located at the upper and lower positions of the screening path for graded screening of the pellets. The mesh size of each group of screening screens 2 is optimized according to the actual screening requirements to meet the separation requirements of pellets of different particle sizes. The outer wall of the screening screen 2 is fixed with a bearing seat 5 for supporting the rotating rod 3 and other dynamic components to ensure the stability of the screening process. The rotating rod 3 runs through the two groups of screening screens 2 and is arranged along its axial direction. Its outer wall is provided with a threaded structure. The threaded rotating sleeve 6 is sleeved on the outer wall of the rotating rod 3 and realizes up and down reciprocating motion along the axial direction of the rotating rod 3 through threaded engagement. The outer wall of the threaded rotating sleeve 6 is evenly distributed with multiple groups of screening spiral blades 7. The spiral blades exert dynamic thrust on the pellets during rotation, prompting the pellets to be fully dispersed and screened on the screening screen 2, preventing the pellets from accumulating or clogging the mesh. The upper and lower side walls of the threaded rotating sleeve 6 are respectively connected to the tensile damping rod 4, and the other end of the tensile damping rod 4 is fixed on the bearing seat 5 on the outer wall of the screening filter 2. The tensile damping rod 4 provides damping force when the threaded rotating sleeve 6 moves up and down, slowing down its movement speed, preventing uneven screening or excessive mechanical vibration caused by rapid movement, thereby improving the screening accuracy and operating stability of the device.

[0043] The inner cavity of the working cylinder 8 is provided with an annular projectile baffle 10, the internal area of ​​which is divided into a projectile storage chamber for temporarily storing screened projectiles. The ring shape of the annular projectile baffle 10 effectively prevents the projectiles from diffusing toward the edge of the cylinder during storage, ensuring that the projectiles are stored in a centralized manner for subsequent transportation or use. A fixed ring frame 19 is provided at the bottom of the annular projectile baffle 10, and a matching annular support frame 20 is arranged above it. The annular support frame 20 can move up and down along the inner wall of the fixed ring frame 19, forming a dynamic load-bearing structure. When the projectile falls into the top of the annular support frame 20 through the conveying pipe 27, the weight of the projectile causes it to move downward and enter the internal storage area of ​​the fixed ring frame 19.

[0044] Inside the fixed ring frame 19, multiple sets of compression buffer and damping rods 21 are installed. One end of each rod is fixed to the inner wall of the fixed ring frame 19, and the other end is connected to the bottom of the annular support frame 20. The compression buffer and damping rods 21 provide a buffering force when the annular support frame 20 moves downward under the weight of the projectiles, slowing its downward movement and preventing the storage chamber from being clogged or damaged by projectile collisions due to rapid accumulation of projectiles. Furthermore, the elastic restoring force of the compression buffer and damping rods 21 pushes the annular support frame 20 upward when the projectiles decrease, maintaining the dynamic balance of the storage chamber.

[0045] Shots enter shot screening assembly 1 through delivery pipe 27. Driven by rotating rod 3, threaded rotating sleeve 6 rotates screening spiral blade 7, pushing the shots to disperse along the surface of screening screen 2. Shots that meet the mesh size pass through screening screen 2 and proceed to the next stage of processing. Tensile damping rod 4 provides damping force during the screening process, ensuring a smooth and efficient screening process.

[0046] The projectiles that have passed the initial screening enter the annular projectile baffle 10 of the working cylinder 8 through the conveying pipe 27 and fall into the top of the annular supporting frame 20. The weight of the projectiles causes the annular supporting frame 20 to move downward along the fixed ring frame 19, and the compression buffer damping rod 21 provides a buffering force to slow down the downward movement speed and ensure that the projectiles are stably accumulated in the storage chamber.

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

[0048] In one possible embodiment, a movable top cover 9 is provided on the top of the working cylinder 8, and a hot gas pumping pump 11 is provided above the movable top cover 9. The working end of the hot gas pumping pump 11 is provided with an air supply pipe 12, and there are two groups of air supply pipes 12. The other ends of the two groups of air supply pipes 12 pass through the outer wall of the working cylinder 8 and the interior of the annular projectile baffle 10 in sequence. The outer wall of the annular projectile baffle 10 is provided with multiple groups of through holes, and the interior of the multiple groups of through holes is provided with a corresponding miscellaneous material filter 13, the miscellaneous material filter 13; the interior of the fixed ring frame 19 is provided with a hot gas pumping pump control button 22, and the hot gas pumping pump 11 is electrically controlled and connected to the hot gas pumping pump control button 22 through a conductive line.

[0049] In a specific application of the embodiment of the present invention, a removable top cover 9 is provided on the top of the working cylinder 8. The top cover is configured to be openable or closable, making it convenient for operators to perform maintenance, cleaning, or loading and unloading of projectiles inside the working cylinder 8. The provision of the removable top cover 9 not only improves the operational convenience of the device, but also ensures the sealing of the working cylinder 8 during operation, preventing the leakage of projectiles or impurities, while providing a stable, sealed environment for the hot gas pumping assembly. Above the removable top cover 9, the device is equipped with a hot gas pumping pump 11 for extracting hot gas or dust generated by projectile screening in the working cylinder 8. The working end of the hot gas pumping pump 11 is connected to an air supply pipe 12, which is divided into two groups, extending from the hot gas pumping pump 11 to the interior of the working cylinder 8. The other ends of the two sets of gas pipes 12 pass through the outer wall of the working cylinder 8 and the interior of the annular projectile baffle 10 in sequence to form a channel for hot air circulation, ensuring that the hot air can be efficiently extracted and transmitted in a direction, avoiding the accumulation of hot air in the working cylinder 8, thereby reducing the performance degradation of the equipment due to high temperature or dust accumulation.

[0050] An annular projectile baffle 10 is provided in the working cylinder 8. The baffle is an annular structure with multiple groups of through holes on its outer wall. Each group of through holes is embedded with a matching debris filter 13. The annular projectile baffle 10 is used to guide the movement trajectory of the projectile during the screening process. At the same time, the combination of the through holes and the debris filter 13 is used to achieve effective separation of impurities in the projectile. The debris filter 13 adopts a mesh structure that matches the through hole size, which can efficiently intercept dust, debris or other non-target particles in the projectile, while allowing qualified projectiles to pass through.

[0051] The device is provided with a hot gas pump control button 22 inside the fixed ring frame 19. The hot gas pump 11 forms an electrical control connection with the hot gas pump control button 22 through a conductive line. When the projectile falls onto the top of the annular support frame 20, the weight of the projectile causes the annular support frame 20 to move downward along the fixed ring frame 19. The annular support frame 20 presses the hot gas pump control button 22 to start or stop the hot gas pump 11, thereby adjusting the operating status of the hot gas pumping, improving the automation level of the device, and ensuring the stability and safety of the hot gas treatment components.

[0052] In one possible embodiment, a movable bottom cover 28 is provided at the bottom of the working cylinder 8, a feed pump 25 is provided above the movable bottom cover 28, a delivery pipe 27 is provided at the working end of the feed pump 25, and two groups of delivery pipes 27 are provided. The other ends of the two groups of delivery pipes 27 pass through the outer wall of the movable top cover 9 and are provided in the storage cavity of the annular projectile baffle 10; a feed pump control button 26 is provided inside the fixed ring frame 19, and the feed pump 25 is electrically controlled and connected to the feed pump control button 26 through a conductive line.

[0053] In a specific application of the embodiment of the present invention, a movable bottom cover 28 is provided at the bottom of the working cylinder 8. The movable bottom cover 28 adopts a structure that can be opened or closed, which corresponds to the setting of the movable top cover 9 at the top, and together constitutes a two-way operable sealing system of the working cylinder 8, which is convenient for the operator to clean and maintain the bottom of the working cylinder 8. Above the movable bottom cover 28, a material extraction pump 25 is provided. The working end of the material extraction pump 25 is connected to a delivery pipe 27. The delivery pipe 27 is divided into two groups, extending from the material extraction pump 25 to the top of the working cylinder 8 respectively. The other ends of the two groups of delivery pipes 27 pass through the outer wall of the movable top cover 9 and are directly connected to the storage chamber inside the annular projectile baffle 10. The delivery path utilizes the storage function of the annular projectile baffle 10 to efficiently extract the screened projectiles from the bottom of the working cylinder 8 and transport them to the top storage chamber, realizing directional collection and temporary storage of the projectiles. The dual configuration of the delivery pipe 27 improves the delivery efficiency, ensures the stability of the projectiles during the delivery process, and reduces the risk of blockage or leakage.

[0054] The storage chamber of the annular projectile baffle 10 is capable of effectively accommodating the screened projectiles transmitted from the conveying pipe 27. The storage chamber is connected to the conveying pipe 27, which not only realizes the efficient collection of the projectiles, but also facilitates the subsequent reuse or output of the projectiles. The device adds a pump control button 26 inside the fixed ring frame 19. The pump 25 forms an electrical control connection with the pump control button 26 through a conductive line. When the projectile falls onto the top of the annular support frame 20, the weight of the projectile causes the annular support frame 20 to move downward along the fixed ring frame 19. The annular support frame 20 presses the pump control button 26 to start or stop the pump 25, thereby flexibly adjusting the operating state of the projectile conveying.

[0055] In one possible embodiment, a first servo motor 14 is provided at the bottom of the movable top cover 9, a first stirring screen 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 17 is provided at the working end of the second servo motor 16, a linkage shaft 18 is provided between the first stirring screen 15 and the second stirring screen 17, the first stirring screen 15 and the second stirring screen 17 are arranged in the storage cavity of the annular projectile baffle 10, and perform a second screening operation on the projectiles, and the driving working 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, and the first servo motor 14 is electrically controlled and connected to the first servo motor control button 23 through a conductive line; a second servo motor control button 24 is provided inside the fixed ring frame 19, and the second servo motor 16 is electrically controlled and connected to the second servo motor control button 24 through a conductive line.

[0057] In a specific application of the embodiment of the present invention, a first servo motor 14 is disposed at the bottom of the movable top cover 9, and its working end is connected to the first stirring screen 15. At the same time, a second servo motor 16 is disposed at the bottom of the inner cavity of the working cylinder 8, and its working end is connected to the second stirring screen 17. The first stirring screen 15 and the second stirring screen 17 are both arranged inside the storage cavity of the annular projectile baffle 10, stirring and screening the projectiles in the storage cavity from the top and bottom respectively. The driving directions of the two servo motors are opposite, and the counter-rotation generates opposing shear forces, which enhances the fluidity and dispersion of the projectiles in the storage cavity, thereby achieving more uniform secondary screening. The bidirectional stirring effectively avoids the accumulation or adhesion of projectiles, 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 stabilizes the relative position and coordinated movement of the two screen plates. 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 action of the two screen plates to form a unified screening system, optimizes the force distribution of the projectiles in the storage chamber, improves the screening efficiency, and reduces the problem of uneven screening caused by unidirectional stirring. The storage chamber of the annular projectile baffle 10 serves as the operating area for secondary screening, and works in conjunction with the original miscellaneous material filter 13 and the through-hole structure. The mesh of the first stirring screen plate 15 and the second stirring screen plate 17 matches the filtering requirements of the storage chamber, and can further separate fine impurities or unqualified particles in the projectiles. The counter-rotating stirring screen plates dynamically stir, so that the projectiles are fully exposed to the mesh filtering surface in the storage chamber, thereby achieving high-precision secondary screening.

[0059] The device adds a first servo motor control button 23 and a second servo motor control button 24 inside the fixed ring frame 19. When the projectile falls onto the top of the annular carrier frame 20, the weight of the projectile causes the annular carrier frame 20 to move downward along the fixed ring frame 19. The annular carrier frame 20 presses the first servo motor control button 23 and the second servo motor control button 24 respectively, and adjusts the operating status of the first servo motor 14 and the second servo motor 16 respectively (such as start, stop or speed adjustment), thereby flexibly controlling the rotation speed and direction of the two stirring screens.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A shot screening device for a shot blasting machine, characterized in that: include: A shot screening processing component (1), the shot screening processing component (1) includes a screening filter (2), the screening filter (2) is provided with two groups, a rotating rod (3) is provided between the two groups of screening filters (2), the outer wall of the rotating rod (3) is provided with a threaded rotating sleeve (6), the threaded rotating sleeve (6) rotates up and down on the outer wall of the rotating rod (3), the outer wall of the threaded rotating sleeve (6) is provided with a plurality of groups of screening spiral leaves (7), and the shot screening processing component (1) performs a first screening operation on the shot; A working cylinder (8), wherein a delivery pipe (27) is provided on the outside of the working cylinder (8), the shot screening and processing assembly (1) is provided inside the delivery pipe (27), the inner cavity of the working cylinder (8) is provided with an annular shot baffle (10), the inner area of ​​the annular shot baffle (10) is divided into a shot storage chamber, a fixed ring frame (19) is provided at the bottom of the annular shot baffle (10), and a matching annular bearing frame (20) is provided above the fixed ring frame (19), the shot is delivered to the inside of the working cylinder (8) through the delivery pipe (27), and the shot falls on the top of the annular bearing frame (20), so that the annular bearing frame (20) moves toward the inside of the fixed ring frame (19); A movable top cover (9) is provided on the top of the working cylinder (8), a hot air pumping pump (11) is provided above the movable top cover (9), a gas pipe (12) is provided at the working end of the hot air pumping pump (11), and two groups of gas pipes (12) are provided. The other ends of the two groups of gas pipes (12) pass through the outer wall of the working cylinder (8) and the inside of the annular projectile baffle (10) in sequence. The outer wall of the annular projectile baffle (10) is provided with multiple groups of through holes, and the inside of the multiple groups of through holes is provided with a matching miscellaneous material filter (13); A movable bottom cover (28) is provided at the bottom of the working cylinder (8), a material extraction pump (25) is provided above the movable bottom cover (28), the delivery pipe (27) is provided at the working end of the material extraction pump (25), and two groups of the delivery pipes (27) are provided. The other ends of the two groups of delivery pipes (27) pass through the outer wall of the movable top cover (9) and are provided in the storage cavity of the annular projectile baffle (10); A first servo motor (14) is provided at the bottom of the movable top cover (9), a first stirring screen (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 (17) is provided at the working end of the second servo motor (16), a linkage shaft (18) is provided between the first stirring screen (15) and the second stirring screen (17), the first stirring screen (15) and the second stirring screen (17) are arranged in the storage cavity of the annular projectile baffle (10), and perform a second screening operation on the projectiles, and the driving working rotation directions of the first servo motor (14) and the second servo motor (16) are opposite.

2. The shot screening device for a shot blasting machine according to claim 1, characterized in that: The outer walls of the two groups of screening screens (2) are both provided with bearing seats (5), the upper and lower side walls of the threaded rotating sleeve (6) are both provided with stretching damping rods (4), and the other ends of the stretching damping rods (4) are both provided 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 hot air pumping pump control button (22) is provided inside the fixed ring frame (19), and the hot air pumping pump (11) is electrically controlled and connected to the hot air pumping pump control button (22) via a conductive line.

4. The shot screening device for a shot blasting machine according to claim 1, characterized in that: A pump control button (26) is provided inside the fixed ring frame (19), and the pump (25) is electrically controlled and connected to the pump control button (26) via a conductive line.

5. The shot screening device for a shot blasting machine according to claim 3, characterized in that: A first servo motor control button (23) is provided inside the fixed ring frame (19), and the first servo motor (14) is electrically controlled and connected to the first servo motor control button (23) via a conductive line; A second servo motor control button (24) is provided inside the fixed ring frame (19), and the second servo motor (16) is electrically controlled and connected to the second servo motor control button (24) via a conductive line.

6. The shot screening device for a shot blasting machine according to claim 1, characterized in that: A plurality of groups of compression buffer damping rods (21) are further 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 annular bearing frame (20).

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