Material self-screening device and process thereof

Abstract

The invention provides a material self-screening device which comprises a grinding bin, a discharging port formed in the side portion of the grinding bin and a material receiving mechanism movably placed below the discharging port, and the material receiving mechanism comprises a powder material receiving frame, a steel ball material receiving frame and a plurality of guide material distributing plates arranged above the powder material receiving frame in parallel at intervals. The guide material distribution plate is arranged in an inclined mode, and the projection of the lower end of the guide material distribution plate on the plane where the bottom of the steel ball receiving frame is located is overlapped with the edge of the steel ball receiving frame or located in the steel ball receiving frame. The invention also provides a process using the crushing system. According to the self-screening device for the materials, the material receiving mechanism of the system comprises the powder material receiving frame and the steel ball material receiving frame, steel balls and smashed materials can be subjected to self-screening, manual separation is not needed, convenience and labor saving are achieved, the invention further provides a process using the self-screening device for the materials, and the self-screening device for the materials is suitable for industrial production. By using the material receiving mechanism, time can be saved.

Description

Technical Field

[0001] This invention belongs to the field of material screening technology, and relates to a self-screening device for materials and its process. Background Technology

[0002] Material crushing and screening are common steps in industrial production. Systems and equipment used for material crushing include ball mills. Ball mills are key equipment for further pulverizing materials after they have been crushed. During crushing, a certain number of steel balls are loaded into the mill as grinding media. They are widely used in various industries. The crushing principle is that when the ball mill rotates, the steel balls and materials are driven together and rise to a certain height under the action of centrifugal force and friction, then fall or roll down, impacting and grinding the materials, gradually pulverizing them.

[0003] After crushing, the crushed material needs to be screened. In existing crushing equipment, after crushing, the crushed material and steel balls fall out from the discharge port. It is necessary to place a receiving container at the discharge port in advance or collect the material after it falls to the workshop floor below. The steel balls are then manually picked out for later use. This process is quite cumbersome. Summary of the Invention

[0004] The purpose of this invention is to provide a self-screening device and process for materials, aiming to solve the problem of cumbersome operation.

[0005] To solve the above-mentioned technical problems, the present invention provides a self-screening device for materials, including a grinding chamber, a discharge port opened on the side of the grinding chamber, and a receiving mechanism movably placed below the discharge port. The receiving mechanism includes a powder receiving frame, a steel ball receiving frame, and a plurality of parallel and spaced guide distribution plates arranged above the powder receiving frame. The guide distribution plates are inclined, and the projection of the lower end of the guide distribution plate on the bottom plane of the steel ball receiving frame overlaps with the edge of the steel ball receiving frame or is located within the steel ball receiving frame.

[0006] Furthermore, the powder receiving frame includes an outer frame and an inner drawer. The outer frame includes a base plate, two opposing first side plates located on both sides of the guide distribution plate, a second side plate located below the top of the guide distribution plate, and a third side plate located below the bottom of the guide distribution plate. The second and third side plates are positioned opposite each other, and the second side plate has a set distance from the base plate. The inner drawer can be pulled out between the second side plate and the base plate under the limitation of the base plate and the two first side plates. Universal wheels are provided at the four corners of the bottom of the outer frame, and a positioning component is also included to position the outer frame.

[0007] Furthermore, the positioning assembly includes two first support rods and two second support rods inserted into the two first side plates in opposite positions, and rotatable positioning pulleys rotatably disposed on the top of the first and second support rods. It also includes a lifting assembly that drives the two first support rods and / or the two second support rods to rise and fall so that the four positioning pulleys move into contact with the outer wall of the grinding chamber. When the four positioning pulleys move into contact with the outer wall of the grinding chamber, all four positioning pulleys are higher than the lowest point of the grinding chamber.

[0008] Furthermore, a connecting rod is provided between the first support rod and the second support rod inserted into the same first side plate. A receiving cavity is provided in the base plate. Both first side plates have receiving notches. The lifting assembly includes a rotating rod with a threaded portion passing through the base plate, a driving rod perpendicular to the rotating rod located in the receiving cavity, and two sets of opening and closing structures located in the two receiving notches. A threaded hole is provided in the middle of the driving rod, and the threaded hole is threadedly connected to the threaded portion of the rotating rod. The opening and closing structure includes a first opening and closing rod and a second opening and closing rod hinged in the middle. The top of the first opening and closing rod is hinged to the connecting rod, and the bottom is rotatably connected to the end of the driving rod. A strip-shaped connecting hole is provided on the connecting rod. The top of the second opening and closing rod is slidably connected to the strip-shaped connecting hole through a cross connector, and the bottom is hinged to the first side plate.

[0009] Furthermore, a rotating rod is provided at the center of the positioning pulley, and the rotating rod is rotatably connected to the second support rod. A rotating wheel is coaxially provided at one end of the rotating rod outside the first side plate. The system also includes a transmission shaft passing through the second support rod. A first transmission wheel is coaxially provided at the end of the transmission shaft outside the outer frame. The system also includes a second transmission belt, which is wound around the rotating wheel and the first transmission wheel. A second transmission wheel is coaxially provided at the end of the transmission shaft inside the outer frame. The system also includes two sets of transmission structures that transmit the rotation of the second transmission wheel. The system also includes a rotating lead screw whose two ends are rotatably connected to the two first side plates. The transmission structure drives the rotating lead screw to rotate. Multiple movable sliders are movably sleeved on the rotating lead screw. A scraper that can tilt up and down is provided at the bottom of the movable slider. The highest point of the scraper is higher than or level with the top of the inner drawer, and the lowest point is lower than the top of the inner drawer.

[0010] Furthermore, a fixing block is provided on the side of the second side plate, and a first connecting side plate is provided on the side of the fixing block. The first connecting side plate has multiple inclined guide grooves, the lowest point of which is lower than the top of the inner drawer. A plug-in post is provided on the top of the scraper, and a plug-in groove is provided on the bottom of the movable slider. The plug-in post is movably fitted with the inner wall of the plug-in groove. A guide block is provided on the side of the scraper, and the guide block is movably fitted with the guide groove. The guide block can tilt up and down under the limitation of the guide groove.

[0011] Furthermore, the guide groove includes a first guide sub-groove and a second guide sub-groove, and the shape formed by the first guide sub-groove and the second guide sub-groove is V-shaped.

[0012] Furthermore, it also includes a second connecting side plate, the side of the scraper is connected to the second connecting side plate, and the guide block is connected to the side of the second connecting side plate opposite to the scraper.

[0013] Furthermore, a limiting opening is provided on the first side plate, and a limiting block is also included. The limiting block is movably fitted with both sides of the limiting opening. A rotating shaft is rotatably connected to the limiting block. The transmission structure includes a third transmission wheel coaxially connected to the end of the rotating screw, a fourth transmission wheel coaxially disposed on the outer periphery of the rotating shaft, and a second transmission belt wound around the second, third, and fourth transmission wheels. It also includes a compensation spring, with both ends of the compensation spring connected to the top of the limiting opening and the top of the limiting block, respectively.

[0014] Furthermore, each of the guide distribution plates has a first movable column at the bottom of its top end and a second movable column at the bottom of its bottom end. Both the first and second movable columns are surrounded by a buffer spring. The top of the third side plate has multiple first movable slots into which the first movable column is movably inserted. The fixing block has multiple second movable slots into which the second movable column is movably inserted. The two ends of the buffer spring are respectively connected to the top of the guide distribution plate and the top of the third side plate / second fixing block.

[0015] Furthermore, it also includes a centrally arched dividing plate, which is located above multiple movable sliders.

[0016] Furthermore, a baffle plate is provided at the higher end of the guide plate. The baffle plate is inclined and the plane of the baffle plate forms an obtuse angle with the plane of the guide plate. The bottom of the baffle plate is connected to the second side plate.

[0017] Furthermore, baffle plates are provided at both ends of the baffle plate.

[0018] Furthermore, the bottom of the inner drawer near the base plate has multiple smooth, arc-shaped protrusions.

[0019] This invention also provides a self-screening process for materials, comprising the following steps:

[0020] S1. Preparation: Check whether the material self-screening device is operating normally, ensure that there are no foreign objects in the material self-screening device, and prepare the material to be crushed and steel balls.

[0021] S2. Loading: The material to be crushed and the grinding media are loaded into the grinding chamber in a certain proportion. The loading amount is usually determined according to the specifications and process requirements of the material's self-screening device.

[0022] S3. Start the equipment and set parameters: Start the material self-screening device according to the equipment start-up procedure and make it start rotating. Set the rotation speed, grinding time and grinding media filling rate parameters according to the properties of the material and the crushing requirements, so that the material self-screening device runs according to the set parameters.

[0023] S5. Unloading and self-screening: When the material reaches the required fineness of grinding, place the receiving mechanism in the self-screening device below the discharge port, stop the operation of the self-screening device, open the discharge port, and the material and steel balls in the grinding chamber fall to the receiving mechanism. The steel balls fall to the guide plate and are intercepted before sliding into the steel ball receiving frame. The material falls through the gap of the guide plate into the powder receiving frame to achieve separation.

[0024] S7. Grading: The discharged powder may need to be graded to separate fine powder that meets the particle size requirements, and return coarse particles to the material's self-screening device for further grinding.

[0025] S8. Cleaning the equipment: After the crushing operation is completed, clean the inside of the material self-screening device to remove residual material and steel balls, and prepare it for the next use.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] This invention provides a self-screening device for materials. The receiving mechanism of the device includes a powder receiving frame and a steel ball receiving frame, which can self-screen the steel balls and crushed materials without manual separation, making it more convenient and labor-saving.

[0028] The present invention also provides a process for using a self-screening device for the material, and the above-mentioned receiving mechanism can save discharge time. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an embodiment of a material self-screening device and its process according to the present invention.

[0030] Figure 2 This is a schematic diagram of the material receiving mechanism in one embodiment of the self-screening device and process of the present invention.

[0031] Figure 3 This is a partial structural schematic diagram of the receiving mechanism in one embodiment of a self-screening device and process for materials according to the present invention.

[0032] Figure 4 This is a cross-sectional view of a portion of the material receiving mechanism in one embodiment of a material self-screening device and its process according to the present invention.

[0033] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0034] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0035] Figure 7 This is a cross-sectional view of the receiving mechanism in one embodiment of a self-screening device and process for materials according to the present invention. Figure 1 ;

[0036] Figure 8 yes Figure 7 Enlarged view of point C in the middle;

[0037] Figure 9 yes Figure 7 Enlarged view at point D;

[0038] Figure 10 This is a cross-sectional view of the receiving mechanism in one embodiment of a self-screening device and process for materials according to the present invention. Figure 2 ;

[0039] Figure 11 This is a cross-sectional view of the receiving mechanism in one embodiment of a self-screening device and process for materials according to the present invention. Figure 3 ;

[0040] Figure 12 yes Figure 11 Enlarged view at point E in the middle;

[0041] Figure 13 This is a cross-sectional view of the receiving mechanism in one embodiment of a self-screening device and process for materials according to the present invention. Figure 4 ;

[0042] Figure 14 yes Figure 13 Enlarged view of point F in the middle.

[0043] The components include: 1. Grinding chamber; 2. Discharge port; 3. Powder receiving frame; 3a. Outer frame; 3a1. Base plate; 3a2. First side plate; 3a3. Second side plate; 3a4. Third side plate; 3b. Inner drawer; 4. Steel ball receiving frame; 5. Guide distribution plate; 6. Casters; 7. First support rod; 8. Second support rod; 9. Positioning pulley; 10. Connecting rod; 11. Receiving cavity; 12. Receiving notch; 13. Control rod; 14. Drive rod; 15. Threaded hole; 16. First opening / closing rod; 17. Second opening / closing rod; 18. Strip connecting hole; 19. Cross connector; 20. Rotating rod; 21. Rotating wheel; 22. Drive shaft; 23. First drive wheel; 24. First drive belt; 25. Second drive belt. 26. Wheel; 27. Rotating lead screw; 28. Movable slider; 29. ​​Scraper; 30. Fixing block; 31. First connecting side plate; 32. Guide groove; 31a. First guide slot; 31b. Second guide slot; 32. Insertion post; 33. Insertion groove; 34. Guide block; 35. Second connecting side plate; 36. Limiting port; 37. Limiting block; 38. Rotating shaft; 39. Third transmission wheel; 40. Fourth transmission wheel; 41. Second transmission belt; 42. Compensating spring; 43. First movable column; 44. Second movable column; 45. Buffer spring; 46. First movable groove; 47. Second movable groove; 48. Material distribution plate; 49. Baffle plate; 50. Baffle enclosure plate; 51. Arc-shaped protrusion; 52. Handle. Detailed Implementation

[0044] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the self-screening device and process for materials proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this invention. The same or similar reference numerals in the drawings represent the same or similar parts.

[0045] This invention provides a self-screening device for materials, with reference to... Figures 1 to 14The equipment includes a grinding chamber 1, a discharge port 2 located on the side of the grinding chamber 1, and a receiving mechanism movably placed below the discharge port 2. The receiving mechanism includes a powder receiving frame 3, a steel ball receiving frame 4, and multiple parallel and spaced guide distribution plates 5 arranged above the powder receiving frame 3. The guide distribution plates 5 are inclined, and the projection of the lower end of the guide distribution plate 5 onto the bottom plane of the steel ball receiving frame 4 overlaps with or is located within the steel ball receiving frame 4. When the material reaches the required fineness of grinding, the receiving mechanism is placed below the discharge port 2, the equipment is stopped, and the discharge port 2 is opened. The material and steel balls in the grinding chamber 1 fall into the receiving mechanism. The steel balls fall into the guide distribution plates 5, are intercepted, and slide into the steel ball receiving frame 4. The material falls through the gaps in the guide distribution plates 5 into the powder receiving frame 3, achieving self-sieving without manual separation, which is more convenient and labor-saving.

[0046] refer to Figure 2 The powder receiving frame 3 includes an outer frame 3a and an inner drawer 3b. The outer frame 3a includes a base plate 3a1, two opposing first side plates 3a2 located on both sides of the guide distribution plate 5, a second side plate 3a3 located below the top of the guide distribution plate 5, and a third side plate 3a4 located below the bottom of the guide distribution plate 5. The second side plate 3a3 and the third side plate 3a4 are positioned opposite each other, and the second side plate 3a3 has a set distance from the base plate 3a1. The inner drawer 3b can be pulled out from between the second side plate 3a3 and the base plate 3a1 under the limitation of the base plate 3a1 and the two first side plates 3a2. The bottom of 3a is equipped with four casters 6 at its four corners, and also includes a positioning component that positions the outer frame 3a below the discharge port 2. Thus, when the receiving mechanism needs to be moved, there is no need to position the outer frame 3a with the positioning component. The casters 6 facilitate the movement of the receiving mechanism. It can be easily pushed below the discharge port 2, and the positioning component can be operated accordingly to fix the position of the outer frame 3a for easy material receiving. During unloading, the material falls into the inner drawer 3b through the gap of the guide plate 5. After unloading is completed, the inner drawer 3b is pulled out between the second side plate 3a3 and the bottom plate 3a1 to facilitate material collection and subsequent screening.

[0047] refer to Figure 2The positioning assembly includes two first support rods 7 and two second support rods 8 inserted into the two first side plates 3a2 at opposite positions, and rotatable positioning pulleys 9 rotatably disposed on the top of the first support rods 7 and the second support rods 8. It also includes a lifting assembly that drives the two first support rods 7 and / or the two second support rods 8 to rise and fall so that the four positioning pulleys 9 are in contact with the outer wall of the grinding chamber 1 or below the bottom of the grinding chamber 1. When the four positioning pulleys 9 are in contact with the outer wall of the grinding chamber 1, all four positioning pulleys 9 are above the lowest point of the grinding chamber 1. Thus, before the receiving mechanism is placed below the discharge port 2, the lifting assembly allows the two first support rods 7 and / or the two second support rods 8 to rise and fall. The position of rod 8 / two first support rods 7 and second support rod 8 is lower than the bottom of the grinding chamber 1, so that the first support rod 7 or the second support rod 8 or the first support rod 7 and the second support rod 8 will not contact the grinding chamber 1 and obstruct the movement of the receiving mechanism. The receiving mechanism can be placed in a suitable position (the powder receiving frame 3 is located directly below the discharge port 2). When the lifting component is used, the two first support rods 7 / two second support rods 8 / two first support rods 7 and the second support rod 8 are raised so that the four positioning pulleys 9 contact the outer wall of the grinding chamber 1. Since the grinding chamber 1 will rotate back and forth when unloading, the positioning pulleys 9 will make active contact with the rotating grinding chamber 1. The setting of four positioning pulleys 9 can reduce the friction between the two, enhance durability, and at the same time play a directional role.

[0048] refer to Figure 2 , Figure 3 , Figure 13 and Figure 14A connecting rod 10 is provided between the first support rod 7 and the second support rod 8 inserted into the same first side plate 3a2. A receiving cavity 11 is provided inside the base plate 3a1. Both first side plates 3a2 have receiving notches 12 communicating with the receiving cavity 11. The lifting assembly includes a control rod 13 with a threaded portion passing through the base plate 3a1, a drive rod 14 perpendicular to the control rod 13 located within the receiving cavity 11, and two sets of opening and closing structures located within the two receiving notches 12. A threaded hole 15 is provided in the middle of the drive rod 14, and the threaded hole 15 is threadedly connected to the threaded portion of the control rod 13. The opening and closing structure includes a central hinge. The first opening / closing rod 16 and the second opening / closing rod 17 are connected. The top of the first opening / closing rod 16 is hinged to the connecting rod 10, and the bottom is rotatably connected to the end of the driving rod 14. The connecting rod 10 has a strip-shaped connecting hole 18. The top of the second opening / closing rod 17 is slidably connected to the strip-shaped connecting hole 18 through a cross connector 19, and the bottom is hinged to the first side plate 3a2. When it is necessary to raise or lower the two first support rods 7 and the second support rod 8, the rotating rod can be rotated to drive the driving rod 14 to move back and forth, thereby causing the second opening / closing rod 17 to open and close accordingly. This causes the connecting rod 10 to move up and down, and the first support rods 7 and the second support rod 8 to move up and down as well, thus realizing their raising and lowering, which is convenient to operate.

[0049] refer to Figure 7 and Figure 8The positioning pulley 9 has a rotating rod 20 at its center, which is rotatably connected to the second support rod 8. A rotating wheel 21 is coaxially mounted on one end of the rotating rod 20 outside the first side plate 3a2. The rod also includes a drive shaft 22 passing through the second support rod 8. A first drive wheel 23 is coaxially mounted on the end of the drive shaft 22 outside the outer frame 3a. A first drive belt 24 is also included, which wraps around the rotating wheel 21 and the first drive wheel 23. The drive shaft 22 is located on the outer frame 3a. The inner end is coaxially provided with a second transmission wheel 25, and also includes two sets of transmission structures to transmit the rotation of the second transmission wheel 25, and a rotating screw 26 whose two ends are rotatably connected to the two first side plates 3a2. The transmission structure drives the rotating screw 26 to rotate. Multiple movable sliders 27 are movably sleeved on the rotating screw 26. The bottom of the movable slider 27 is provided with a scraper 28 that can tilt up and down. When the scraper 28 is moved to its highest position, the bottom of the scraper 28 is higher than or in contact with the top of the inner drawer 3b. When the tops are flush with each other, and the scraper 28 is at its lowest point, the bottom of the scraper 28 is lower than the top of the inner drawer 3b (so the scraper 28 at its highest point does not affect the entry and exit of the inner drawer 3b; however, the scraper 28 can simultaneously tilt and scrape the material inside the inner drawer 3b, making the material spread out). Thus, when the positioning pulley 9 contacts the outer wall of the grinding chamber 1, the grinding chamber 1 will rotate back and forth at a small angle during discharge to facilitate discharge, and the positioning pulley 9 in contact with the outer wall of the grinding chamber 1 will also rotate back and forth, driving the rotating rod 20 to rotate, which in turn drives the rotating wheel 21 to rotate, and transmits the rotation through the first transmission belt 24. The movement of the first transmission wheel 23 drives the first transmission wheel 23 to rotate, which in turn drives the transmission shaft 22 to rotate, and then drives the second transmission wheel 25 to rotate back and forth. Through the transmission structure, the rotating screw 26 rotates back and forth, and the movable slider 27 moves back and forth along the axis of the rotating screw 26, which drives the scraper 28 to move back and forth. This leveles the powder in the inner drawer 3b, preventing the powder from being higher than the top of the inner drawer 3b, thus avoiding spillage and waste when it is pulled out. The back and forth rotation of the grinding chamber 1 during discharge provides power for the movement of the scraper 28, eliminating the need for an additional power structure and saving energy.

[0050] refer to Figure 4 , Figure 5 , Figure 10 , Figure 11 and Figure 12The second side plate 3a3 has a fixing block 29 on its side, and a first connecting side plate 30 is provided on the side of the fixing block 29. The first connecting side plate 30 has multiple inclined guide grooves 31, the lowest point of which is lower than the top of the inner drawer 3b. The top of the scraper 28 has a plug-in post 32, and the bottom of the movable slider 27 has a plug-in groove 33. The plug-in post 32 is movably fitted to the inner wall of the plug-in groove 33. The side of the scraper 28 has a guide block 34, which is movably fitted to the guide groove 31. The guide block 34 can tilt up and down under the limit of the guide groove 31. In this way, the scraper 28 moves back and forth up and down. Compared with horizontal movement, it will not scrape back the scraped material, and the scraping effect is better.

[0051] refer to Figure 10 The feature is that the guide groove 31 includes a first guide groove 31a and a second guide groove 31b. The shape formed by the first guide groove 31a and the second guide groove 31b is V-shaped. In this way, the scraper 28 can scrape out more powder in the middle position from the position relatively close to the side plates, making the scraping more targeted and further improving the effect.

[0052] refer to Figure 5 It also includes a second connecting side plate 35, the side of the scraper 28 is connected to the second connecting side plate 35, and the guide block 34 is connected to the side of the second connecting side plate 35 away from the scraper 28. In this way, it is not necessary for each guide block 34 to be connected to the scraper 28, so fewer guide blocks 34 can be set. Moreover, the movement of multiple scrapers 28 is consistent. Compared with setting a guide block 34 on each scraper 28, the advantage of this setting is that it is easier to control the up and down movement of multiple scrapers 28.

[0053] refer to Figure 9 The first side plate 3a2 has a limiting opening 36 and also includes a limiting block 37. The limiting block 37 is movably fitted to both sides of the limiting opening 36. A rotating shaft 38 is rotatably connected to the limiting block 37. The transmission structure includes a third transmission wheel 39 coaxially connected to the end of the rotating screw 26, a fourth transmission wheel 40 coaxially disposed on the outer periphery of the rotating shaft 38, and a second transmission belt 41 wound around the second transmission wheel 25, the third transmission wheel 39, and the fourth transmission wheel 40. It also includes a compensating spring 42. The two ends of the compensating spring 42 are respectively connected to the top of the limiting opening 36 and the top of the limiting block 37. Since the second support rod 8 will move up and down, the compensating spring 42 can ensure that the second transmission belt 41 remains taut to ensure the transmission of the second transmission wheel 25, the third transmission wheel 39, and the fourth transmission wheel 40. Thus, the rotation of the second transmission wheel 25 can be transmitted to the third transmission wheel 39, driving the rotating screw 26 to move back and forth.

[0054] refer to Figure 5 and Figure 6 Each of the guide distribution plates 5 has a first movable column 43 at the bottom of its top end and a second movable column 44 at the bottom of its bottom end. Both the first and second movable columns 43 and 44 are surrounded by a buffer spring 45. The top of the third side plate 3a4 has multiple first movable slots 46 into which the first movable column 43 is movably inserted. The fixing block 29 has multiple second movable slots 47 into which the second movable column 44 is movably inserted. The two ends of the buffer spring 45 are connected to the top of the guide distribution plate 5 and the top of the third side plate 3a4 / second fixing block 29, respectively. Thus, when steel balls falling from the outlet 2 fall onto the guide distribution plate 5, the buffer spring 45 reduces the impact force between the steel balls and the guide distribution plate 5, making the guide distribution plate 5 more durable and preventing damage to the surface of the steel balls.

[0055] refer to Figure 12 It also includes a centrally arched distribution plate 48 (both ends of which are fixedly connected to the first side plate 3a2). The distribution plate 48 is located above the multiple movable sliders 27. In this way, after the powder falls onto the distribution plate 48, it slides down from both sides of the distribution plate 48 and will not fall onto the top of the movable sliders 27.

[0056] refer to Figure 13 A baffle plate 49 is provided at the higher end of the guide distribution plate 5. The baffle plate 49 is inclined and the plane of the baffle plate 49 forms an obtuse angle with the plane of the guide distribution plate 5. The bottom of the baffle plate 49 is connected to the second side plate 3a3. The baffle plate 49 can prevent powder from falling out from the higher end of the guide distribution plate 5. Since the baffle plate 49 is inclined, the powder that falls on the baffle plate 49 can fall back onto the guide distribution plate 5 under the action of gravity.

[0057] refer to Figure 13 The baffle plate 49 is also provided with baffle plates 50 at both ends. The baffle plates 50 can prevent powder from falling out from both sides of the guide plate 5, and the powder collection effect is better.

[0058] refer to Figure 3 The baffle plate 49 is provided with a handle 52 on the side opposite to the guide plate 5.

[0059] refer to Figure 3 The inner drawer 3b is provided with a handle 52 on one side of the outer frame 3a to facilitate its pulling out.

[0060] refer to Figure 3The bottom of the inner drawer 3b near the bottom plate 3a1 is provided with a number of smooth arc-shaped protrusions 51, which can reduce the contact area between the inner drawer 3b and the bottom plate 3a1, thereby reducing the friction between the inner drawer 3b and the bottom plate 3a1 when the inner drawer 3b is pulled out and reducing wear.

[0061] Referring to the figure, a rotating handwheel is coaxially provided at one end of the control lever 13 outside the base plate 3a1, which facilitates the rotation of the control lever 13.

[0062] This invention provides a self-screening process for the above-mentioned materials, comprising the following steps:

[0063] S1. Preparation: Check whether the material self-screening device is operating normally, ensure that there are no foreign objects in the material self-screening device, and prepare the material to be crushed and steel balls.

[0064] S2. Loading: The material to be crushed and the grinding media are loaded into the grinding chamber 1 in a certain proportion. The loading amount is usually determined according to the specifications and process requirements of the material's self-screening device.

[0065] S3. Start the equipment and set parameters: Start the material self-screening device according to the equipment start-up procedure and make it start rotating. Set the rotation speed, grinding time and grinding media filling rate parameters according to the properties of the material and the crushing requirements, so that the material self-screening device runs according to the set parameters.

[0066] S5. Unloading and self-screening: When the material reaches the required fineness of grinding, place the receiving mechanism in the self-screening device below the discharge port 2, stop the operation of the self-screening device, open the discharge port 2, and the material and steel balls in the grinding chamber 1 fall to the receiving mechanism. The steel balls fall to the guide plate 5 and are intercepted before sliding into the steel ball receiving frame 4. The material falls through the gap of the guide plate 5 into the powder receiving frame 3 to achieve self-screening.

[0067] S7. Grading: The discharged powder may need to be graded to separate fine powder that meets the particle size requirements, and return coarse particles to the material's self-screening device for further grinding.

[0068] S8. Cleaning the equipment: After the crushing operation is completed, clean the inside of the material self-screening device to remove residual material and steel balls, and prepare it for the next use.

[0069] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A self-screening device for materials, characterized in that, It includes a grinding chamber (1), a discharge port (2) opened on the side of the grinding chamber (1), and a receiving mechanism movably placed below the discharge port (2). The receiving mechanism includes a powder receiving frame (3), a steel ball receiving frame (4), and a plurality of parallel and spaced guide plates (5) arranged above the powder receiving frame (3). The guide plates (5) are inclined. The projection of the lower end of the guide plate (5) on the bottom plane of the steel ball receiving frame (4) overlaps with the edge of the steel ball receiving frame (4) or is located inside the steel ball receiving frame (4).

2. The self-screening device for materials according to claim 1, characterized in that, The powder receiving frame (3) includes an outer frame (3a) and an inner drawer (3b). The outer frame (3a) includes a base plate (3a1), two opposing first side plates (3a2) located on both sides of the guide distribution plate (5), a second side plate (3a3) located below the top of the guide distribution plate (5), and a third side plate (3a4) located below the bottom of the guide distribution plate (5). The second side plate (3a3) and the third side plate (3a4) are positioned opposite each other. The second side plate (3a3) has a set distance from the base plate (3a1). The inner drawer (3b) can be pulled out between the second side plate (3a3) and the base plate (3a1) under the limitation of the base plate (3a1) and the two first side plates (3a2). The four corners of the bottom of the outer frame (3a) are provided with casters (6). The outer frame (3a) also includes a positioning component that positions the outer frame (3a) below the discharge port (2).

3. The self-screening device for materials according to claim 2, characterized in that, The positioning assembly includes two first support rods (7) and two second support rods (8) inserted into the two first side plates (3a2) in opposite positions, and rotatable positioning pulleys (9) rotatably disposed on the top of the first support rods (7) and the second support rods (8). It also includes a lifting assembly that drives the two first support rods (7) and / or the two second support rods (8) to rise and fall so that the four positioning pulleys (9) are in active contact with the outer wall of the grinding chamber (1) or below the bottom of the grinding chamber (1). When the four positioning pulleys (9) are in active contact with the outer wall of the grinding chamber (1), all four positioning pulleys (9) are higher than the lowest point of the grinding chamber (1).

4. The self-screening device for materials according to claim 3, characterized in that, A connecting rod (10) is provided between the first support rod (7) and the second support rod (8) inserted into the same first side plate (3a2). A receiving cavity (11) is provided in the base plate (3a1). Both first side plates (3a2) are provided with receiving notches (12). The lifting assembly includes a control rod (13) with a threaded portion passing through the base plate (3a1), a drive rod (14) perpendicular to the control rod (13) located in the receiving cavity (11), and two sets of opening and closing structures located in the two receiving notches (12). The drive rod (14) has a central... The part is provided with a threaded hole (15), which is threadedly connected to the threaded part of the control rod (13). The opening and closing structure includes a first opening and closing rod (16) and a second opening and closing rod (17) that are hinged in the middle. The top of the first opening and closing rod (16) is hinged to the connecting rod (10), and the bottom is rotatably connected to the end of the drive rod (14). The connecting rod (10) is provided with a strip-shaped connecting hole (18). The top of the second opening and closing rod (17) is slidably connected to the strip-shaped connecting hole (18) through a cross connector (19), and the bottom is hinged to the first side plate (3a2).

5. The self-screening device for materials according to claim 4, characterized in that, A rotating rod (20) is provided at the center of the positioning pulley (9). The rotating rod (20) is rotatably connected to the second support rod (8). A rotating wheel (21) is coaxially provided at one end of the rotating rod (20) outside the first side plate (3a2). The rod also includes a transmission shaft (22) passing through the second support rod (8). A first transmission wheel (23) is coaxially provided at the end of the transmission shaft (22) outside the outer frame (3a). The rod also includes a first transmission belt (24). The first transmission belt (24) is wound around the rotating wheel (21) and the first transmission wheel (23). The end of the transmission shaft (22) inside the outer frame (3a) is... The part is coaxially provided with a second transmission wheel (25), and also includes two sets of transmission structures that transmit the rotation of the second transmission wheel (25), and a rotating screw (26) whose two ends are rotatably connected to the two first side plates (3a2). The transmission structure drives the rotating screw (26) to rotate. Multiple movable sliders (27) are movably sleeved on the rotating screw (26). The bottom of the movable slider (27) is provided with a scraper (28) that can tilt up and down. The highest point of the scraper (28) is higher than or level with the top of the inner drawer (3b), and the lowest point is lower than the top of the inner drawer (3b).

6. The self-screening device for materials according to claim 5, characterized in that, The second side plate (3a3) is provided with a fixing block (29) on its side. The fixing block (29) is provided with a first connecting side plate (30) on its side. The first connecting side plate (30) is provided with a plurality of inclined guide grooves (31). The lowest point of the guide groove (31) is lower than the top of the inner drawer (3b). The top of the scraper (28) is provided with a plug-in post (32). The bottom of the movable slider (27) is provided with a plug-in groove (33). The plug-in post (32) is in movable contact with the inner wall of the plug-in groove (33). The side of the scraper (28) is provided with a guide block (34). The guide block (34) is in movable contact with the guide groove (31). The guide block (34) can tilt up and down under the limit of the guide groove (31).

7. The self-screening device for materials according to claim 6, characterized in that, The guide groove (31) includes a first guide groove (31a) and a second guide groove (31b), and the shape formed by the first guide groove (31a) and the second guide groove (31b) is V-shaped.

8. The self-screening device for materials according to claim 6, characterized in that, It also includes a second connecting side plate (35), the side of the scraper (28) is connected to the second connecting side plate (35), and the guide block (34) is connected to the side of the second connecting side plate (35) away from the scraper (28).

9. The self-screening device for materials according to claim 6, characterized in that, The first side plate (3a2) has a limiting opening (36) and also includes a limiting block (37). The limiting block (37) is movably fitted with both sides of the limiting opening (36). A rotating shaft (38) is rotatably connected to the limiting block (37). The transmission structure includes a third transmission wheel (39) coaxially connected to the end of the rotating screw (26), a fourth transmission wheel (40) coaxially disposed on the outer periphery of the rotating shaft (38), and a second transmission belt (41) wound around the second transmission wheel (25), the third transmission wheel (39), and the fourth transmission wheel (40). It also includes a compensating spring (42). The two ends of the compensating spring (42) are respectively connected to the top of the limiting opening (36) and the top of the limiting block (37). And / or, each of the guide distribution plates (5) has a first movable column (43) at the bottom of its top end and a second movable column (44) at the bottom of its bottom end. Both the first movable column (43) and the second movable column (44) are surrounded by a buffer spring (45). The top of the third side plate (3a4) is provided with a plurality of first movable slots (46). The first movable column (43) is movably inserted into the first movable slot (46). The fixing block (29) is provided with a plurality of second movable slots (47). The second movable column (44) is movably inserted into the second movable slot (47). The two ends of the buffer spring (45) are respectively connected to the top of the guide distribution plate (5) and the top of the third side plate (3a4) / second fixing block (29). And / or, also includes a material distribution plate (48) located above a plurality of movable sliders (27); And / or, a baffle plate (49) is provided at the higher end of the guide plate (5), the baffle plate (49) is inclined, the plane of the baffle plate (49) forms an obtuse angle with the plane of the guide plate (5), and the bottom of the baffle plate (49) is connected to the second side plate (3a3); And / or, baffle plates (50) are also provided at both ends of the baffle plate (49); And / or, the bottom of the inner drawer (3b) near the bottom plate (3a1) is provided with a plurality of smooth arc-shaped protrusions (51).

10. A self-screening process for materials, characterized in that, Includes the following steps: S1. Preparation: Check whether the material self-screening device is operating normally, ensure that there are no foreign objects in the material self-screening device, and prepare the material to be crushed and steel balls. S2. Loading: The material to be crushed and the grinding media are loaded into the grinding chamber (1) in a certain proportion. The loading amount is usually determined according to the specifications and process requirements of the material's self-screening device. S3. Start the equipment and set parameters: Start the material self-screening device according to the equipment start-up procedure and make it start rotating. Set the rotation speed, grinding time and grinding media filling rate parameters according to the properties of the material and the crushing requirements, so that the material self-screening device runs according to the set parameters. S5. Unloading and self-screening: When the material reaches the required fineness of crushing, the receiving mechanism in the self-screening device of the material according to any one of claims 1-9 is placed below the discharge port (2), the operation of the self-screening device of the material is stopped, the discharge port (2) is opened, the material and steel balls in the grinding chamber (1) fall to the receiving mechanism, the steel balls fall to the guide distribution plate (5) and are intercepted and then slide into the steel ball receiving frame (4), and the material falls through the gap of the guide distribution plate (5) into the powder receiving frame (3) to achieve self-screening; S7. Grading: The discharged powder may need to be graded to separate fine powder that meets the particle size requirements, and return coarse particles to the material's self-screening device for further grinding. S8. Cleaning the equipment: After the crushing operation is completed, clean the inside of the material self-screening device to remove residual material and steel balls, and prepare it for the next use.

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