A rubber powder screening device

Abstract

The invention discloses a rubber powder screening device, and relates to the technical field of rubber powder screening. The rubber powder screening device comprises a base, wherein one end of the base is provided with a feed port, and the other end of the base is provided with a mounting groove, a material storage cavity is provided inside the base, and inclined surfaces are provided on both sides of the material storage cavity, a conveying mechanism is arranged in the material storage cavity, and a fixing frame is installed in the mounting groove; the fixing frames are symmetrically arranged on both sides of the mounting groove, a rotating shaft is arranged on the fixing frames, and gears are coaxially arranged on the rotating shaft, and the gears are connected by racks, a storage plate is arranged on the rack, and a vibration component is arranged on the storage plate; a driving motor is arranged near the fixing frame, the output end of the driving motor is connected to the rotating shaft, and a conveying mechanism is arranged on one side of the fixing frame. The device solves the problem that when rubber powder is screened, larger particles or rubber powder with the same particles are blocked in the sieve holes, so that the rubber powder cannot be screened normally, and the screening efficiency of the device for rubber powder is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rubber powder screening, and more particularly to a rubber powder screening device. Background Art

[0002] Rubber powder is mainly used in the production of rubber products, such as automobile tires, rubber tubes, rubber pads, etc. They can provide elasticity, wear resistance, sound insulation and other functions, and are widely used in industry and daily life. Due to the different application environments of rubber powder, the requirements for rubber powder particles are different. At the same time, there will be various impurities in the rubber powder. These impurities will affect the physical properties and durability of rubber products. Only by effectively removing these impurities can the purity of the rubber powder and the product quality be ensured. Therefore, it is necessary to screen the rubber powder to remove impurities and control the particle size of the rubber powder to ensure that the quality of the products made from the rubber powder meets the requirements.

[0003] Most of the prior art uses a rotary vibrating screen to screen rubber powder. The screen is shaken by the shaking and vibration generated by a vibrating motor. When the screen is shaken, the rubber powder to be screened is placed on the screen surface, so that the shaking of the screen is used to screen the rubber powder. However, during the screening process, due to the different particles of the rubber powder, large particles of rubber powder may be blocked in the screen holes of the screen. In addition, rubber powder of the same particles may be blocked in the same screen hole, resulting in the screening efficiency of the rubber powder being affected. Therefore, the prior art uses a vibration device to vibrate the screen, thereby vibrating the screen. The rubber powder blocked in the hole is cleaned, but the screen is impacted for a long time, causing the screen to deform and the aperture of the screen to become larger or smaller, resulting in uneven subsequent rubber powder screening, which in turn affects the screening efficiency of the rubber powder. Due to the softness of the rubber powder, vibrating the screen through a vibration device may make its blockage worse. For this reason, the machine can only be stopped to clean the surface of the screen. After cleaning, the cleaned rubber powder is added back into the device for screening, thereby ensuring the screening quality of the rubber powder. However, this method seriously reduces the screening efficiency of the rubber powder.

[0004] In view of the above situation, the present invention designs a rubber powder screening device to solve the above technical problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a rubber powder screening device, which solves the problem of

[0006] When rubber powder is screened, larger particles or rubber powder of the same particle size are clogged in the screen holes, making it impossible to screen the rubber powder normally, thereby reducing the efficiency of the device in screening the rubber powder.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A rubber powder screening device is used for multi-stage separation of rubber powder, comprising a base, a feed port is provided at one end of the base, a mounting groove is provided at the other end of the base, a storage cavity is provided inside the base, and inclined surfaces are provided on both sides of the storage cavity, a conveying mechanism is provided in the storage cavity, and a fixing frame is installed in the mounting groove; the fixing frames are symmetrically arranged on both sides of the mounting groove, and the fixing frames are connected by fixing columns, a gear rack mechanism is provided on the fixing frame, the fixing frame is a triangular structure, a rotating shaft is provided at three corners of the fixing frame, and gears are coaxially installed on the rotating shaft, and each gear is connected by a rack, a storage plate is provided on the rack, and a vibration component is provided on the storage plate; a driving motor is provided near the fixing frame, the output end of the driving motor is connected to the rotating shaft, a conveying mechanism is provided on one side of the fixing frame, and in an initial state, the discharge port of the conveying mechanism corresponds to the feed port of the vibration component; the driving motor drives the gear rack mechanism to move, so that the rubber powder blocked by the vibration component after screening falls into the storage cavity, and the rubber powder is transported to the inside of the vibration component by the conveying mechanism, so that the rubber powder is screened again inside the vibration component.

[0009] Preferably, the conveying mechanism includes a conveying motor, a guide cover, an auger blade and a material guide pipe. The conveying motor is arranged below the base and perpendicular to the base. The output end of the conveying motor passes through the base. The output end of the conveying motor is connected to the auger blade. The circumferential surface of the auger blade is provided with a guide cover, and the guide cover and the auger blade are fitted to form a conveying cavity for rubber powder. A material guide pipe is provided on the top of the guide cover.

[0010] Preferably, conical protrusions are arranged in an equidistant array on the auger blade, and the conical protrusions are arranged in the middle of the auger blade.

[0011] Preferably, the vibration assembly includes a hopper, a top frame, a screen structure, a bottom frame, a spring, a base and a vibration motor. The base is fixedly arranged on a storage plate, a bottom frame is arranged above the base, the bottom frame is connected to the base through a spring, a vibration motor is arranged inside the base, the vibration motor is connected to the bottom frame through a connecting plate, a bottom discharge port is arranged on one side of the bottom frame, a screen structure is connected above the bottom frame, a top frame is arranged above the screen structure, a top discharge port is arranged on one side of the top frame, and the bottom discharge port and the top discharge port are in opposite positions, the top frame is connected to the hopper, and a feed pipe is arranged on one side of the hopper, and in an initial state, the feed pipe corresponds to the guide pipe.

[0012] Preferably, the screen structure includes a conical block, a connecting spring, an arc-shaped push plate and a screen. The screen is arranged between the top frame and the bottom frame. A conical block is arranged in the middle of the screen. Connecting springs are arranged in an array around the conical block, and an arc-shaped push plate is installed at the other end of the connecting spring. The bottom end of the arc-shaped push plate is in contact with the surface of the screen.

[0013] Preferably, the screen mesh is provided with screen holes in a circumferential array, and the screen holes are in a conical structure that is narrow at the top and wide at the bottom.

[0014] Preferably, an upper weight is arranged above the vibration motor, and a lower weight is arranged below the vibration motor, and the upper weight is symmetrically arranged with the lower weight.

[0015] Preferably, a spherical protrusion is provided on the bottom frame, and a material guide groove is provided in a ring array on the spherical protrusion, and the rubber powder moves along the material guide groove.

[0016] Preferably, a discharge trough is provided on a side of the top frame away from the rack, a fixing rod is provided in the middle of the discharge trough, and a cover plate is rotatably provided on the fixing rod.

[0017] Preferably, a conical cavity is opened inside the cover plate, and a plurality of counterweight beads are arranged in the conical cavity. The cover plate changes the position of the internal counterweight beads through a gear rack mechanism.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention provides a rubber powder screening device, which drives a gear rack mechanism installed on a fixed frame through a driving motor, and through the triangular structure of the fixed frame, moves a vibration component on a storage plate around the fixed frame from the longest right-angle side of the fixed frame. During the movement, the vibration component screens the rubber powder and can clean and collect the rubber powder blocked on the screen to ensure the screening quality of the rubber powder, avoid the damage to the screen caused by the vibration device used in the prior art, resulting in deformation of the screen holes, and thus improve the rubber powder screening device.

[0020] 2. The present invention provides a rubber powder screening device, which cooperates with a screen structure through a vibration component. During the rubber powder screening process, the screen structure can prevent the rubber powder from agglomerating on the screen surface, resulting in the screen being unable to evenly screen the rubber powder. Under the action of the vibration component, the rubber powder clogged inside the screen hole can be cleaned to prevent the rubber powder from getting stuck in the screen hole during the screening process, resulting in a decrease in the subsequent rubber powder screening efficiency.

[0021] 3. The present invention provides a rubber powder screening device, which cooperates with a vibration component through a conveying mechanism. During the screening process, when the vibration component moves around a fixed frame, a cover plate arranged in the vibration component is automatically opened when the vibration component moves to the shortest right-angle side, and the rubber powder blocked and accumulated in the vibration component falls into a storage cavity on the base. Under the action of the conveying mechanism, the rubber powder in the storage cavity is transported to the inside of the vibration component for secondary screening, thereby ensuring the screening quality of the rubber powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0024] Figure 3 It is a cross-sectional view of the overall structure of the vibration assembly of the present invention;

[0025] Figure 4 is a stepped cross-sectional view of the vibration assembly of the present invention;

[0026] Figure 5 It is a cross-sectional view of the fixing frame of the present invention cooperating with the conveying assembly;

[0027] Figure 6 It is a schematic diagram of the overall structure of the fixing frame of the present invention;

[0028] Figure 7 It is a schematic diagram of the overall structure of the base of the present invention;

[0029] Figure 8 A partial cross-sectional view of a conveying assembly of the present invention;

[0030] Fig. 9 It is a cross-sectional view of the cover plate and the fixing rod of the present invention.

[0031] Reference numerals:

[0032] 1. Base; 11. Feeding port; 12. Mounting slot; 13. Dropping slot; 14. Storage chamber; 141. Inclined surface; 2. Driving motor; 3. Fixed frame; 31. Gear rack mechanism; 311. Rack; 312. Gear; 32. Fixed column; 33. Rotating shaft; 34. Storage rack; 4. Conveying mechanism; 41. Conveying motor; 42. Guide cover; 43. Auger blade; 431. Conical protrusion; 44. Guide pipe; 45. Conveying chamber; 5. Vibration assembly; 51. Hopper; 5 11. Feed pipe; 52. Top frame; 521. Top discharge port; 522. Cover plate; 5221. Conical cavity; 5222. Counterweight bead; 523. Fixing rod; 53. Screen structure; 531. Conical block; 532. Connecting spring; 533. Arc push plate; 534. Screen; 54. Bottom frame; 541. Bottom discharge port; 542. Spherical protrusion; 55. Spring; 56. Machine base; 57. Vibration motor; 571. Upper weight; 572. Lower weight; 573. Connecting plate. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] refer to Figure 1 , Figure 2 , Figure 7 As shown, a rubber powder screening device is used for multi-stage separation of rubber powder, including a base 1, a feed port 11 is provided at one end of the base 1, and a mounting groove 12 is provided at the other end of the base 1, a storage cavity 14 is provided inside the base 1, and inclined surfaces 141 are provided on both sides of the storage cavity 14, a conveying mechanism 4 is provided in the storage cavity 14, and a fixing frame 3 is installed in the mounting groove 12; the fixing frames 3 are symmetrically arranged on both sides of the mounting groove 12, and the fixing frames 3 are connected by fixing columns 32, and a gear rack mechanism 31 is provided on the fixing frame 3, and the fixing frame 3 is a triangular structure, and a rotating shaft 33 is provided at the three corners of the fixing frame 3, and a gear 3 is coaxially installed on the rotating shaft 33. 12, each gear 312 is connected by a rack 311, a storage plate is arranged on the rack 311, and a vibration component 5 is arranged on the storage plate; a driving motor 2 is arranged near the fixing frame 3 on the base 1, the output end of the driving motor 2 is connected to the rotating shaft 33, and a conveying mechanism 4 is arranged on one side of the fixing frame 3, and in the initial state, the discharge port of the conveying mechanism 4 corresponds to the feed port 11 of the vibration component 5; the driving motor 2 drives the gear rack mechanism 31 to move, so that the rubber powder blocked by the vibration component 5 after screening falls into the storage cavity 14, and the rubber powder is transported to the inside of the vibration component 5 through the conveying mechanism 4, so that the rubber powder is screened again inside the vibration component 5.

[0035] During the working process, the staff first adds the rubber powder that needs to be screened from the feed port 11 on the base 1. After the rubber powder is added, the rubber powder slides into the storage chamber along the inclined surface 141 opened inside the base 1. In the initial state, the discharge port of the conveying mechanism 4 is connected with the feed port 11 of the vibration component 5. At this time, the conveying mechanism 4 is started, and the conveying mechanism 4 conveys the rubber powder in the storage chamber 14 to the inside of the vibration component 5. When the rubber powder enters the inside of the vibration component 5, the staff starts the driving motor 2. The rotation of the driving motor 2 drives the rotating shaft 33 to rotate. Since the rotating shaft 33 and the gear 312 rotate, the rotating shaft 33 and the gear 312 can be synchronously moved. The rotation of the gear 312 drives the rack 311 meshing therewith to move around the fixed frame 3. A storage plate is provided on the rack 311, and the vibration component 5 can be placed on the storage plate for fixing through the storage plate. In the initial state, the vibration component 5 is located on the longest right-angled side of the fixed frame 3 and is aligned with the conveying mechanism 4, when the vibration component 5 screens the rubber powder, the rack 311 drives the vibration component 5 to start moving around the fixed frame 3. During the movement of the vibration component 5 on the longest right-angled side, the rubber powder added to the inside of the vibration component 5 by the conveying mechanism 4 can be evenly screened. However, since the rubber powder is soft and elastic, the rubber powder is stuck in the sieve hole during the screening process. When the vibration component 5 moves to the hypotenuse of the fixed frame 3, the upper end of the vibration component 5 faces downward. At this time, the vibration component 5 continues to move, so that the rubber powder blocked in the sieve hole can be cleaned out. When the vibration component 5 moves to the shortest right-angled side of the fixed frame 3, the vibration component 5 is parallel to the base 1. Through the special structure of the vibration component 5, the rubber powder blocked inside is collected in the storage chamber 14, so that the rubber powder is screened twice by the conveying mechanism 4. During the movement of the vibration component 5 driven by the gear rack mechanism 31, the vibration component 5 is in the process of continuous startup.

[0036] like Figure 5 , Figure 6 , Figure 8 As shown, the conveying mechanism 4 includes a conveying motor 41, a guide cover 42, an auger blade 43 and a material guide pipe 44. The conveying motor 41 is arranged below the base 1, and the conveying motor 41 is arranged perpendicular to the base 1. The output end of the conveying motor 41 is arranged through the base 1, and the output end of the conveying motor 41 is connected to the auger blade 43. The circumferential surface of the auger blade 43 is provided with a guide cover 42, and the guide cover 42 and the auger blade 43 are fitted to form a conveying cavity 45 for rubber powder, and a material guide pipe 44 is arranged at the top of the guide cover 42.

[0037] During the working process, the operator adds the rubber powder to be screened into the storage chamber 14 and then starts the conveying motor 41. The conveying motor 41 rotates, and the rotation of the conveying motor 41 drives the coaxially installed auger blade 43 to rotate. The auger blade 43 rotates. Since the outer side of the auger blade 43 is fitted with a guide cover 42, a conveying chamber 45 is formed between the auger blade 43 and the guide cover 42. A rubber powder inlet is provided at the bottom end of the guide cover 42. Since an inclined surface 141 is provided in the storage chamber 14, the rubber powder is gathered at the auger blade 43 through the rubber powder inlet, and the rubber powder is driven to move upward by the rotation of the auger blade 43. When the rubber powder is conveyed to the top of the guide cover 42, the rubber powder is conveyed by the guide cover 42 to the guide pipe 44. The guide pipe 44 can be set to a conical structure that is high near the guide cover 42 and low near the vibration component 5, so as to avoid the rubber powder being blocked at the junction of the guide pipe 44 and the guide cover 42.

[0038] Conical protrusions 431 are arranged in an equidistant array on the auger blade 43, and the conical protrusions 431 are arranged in the middle of the auger blade 43. With this arrangement, when the auger blade 43 rotates, the rubber powder moves toward the top of the guide cover 42, and the conical protrusions 431 arranged in the auger blade 43 divide the rubber powder into two sides of the conveying chamber 45, so that the clumped and agglomerated rubber powder can be broken up before screening begins, thereby ensuring that the subsequent rubber powder can be better screened and evenly, thereby improving the screening quality of the rubber powder.

[0039] like Figure 3 , Figure 4 As shown, the vibration assembly 5 includes a hopper 51, a top frame 52, a screen structure 53, a bottom frame 54, a spring 55, a base 56 and a vibration motor 57. The base 56 is fixedly arranged on the storage plate, a bottom frame 54 is arranged above the base 56, and the bottom frame 54 is connected to the base 56 through a spring 55. A vibration motor 57 is arranged inside the base 56, and the vibration motor 57 is connected to the bottom frame 54 through a connecting plate 573. A bottom discharge port 541 is arranged on one side of the bottom frame 54, a screen structure 53 is connected above the bottom frame 54, a top frame 52 is arranged above the screen structure 53, a top discharge port 521 is arranged on one side of the top frame 52, and the bottom discharge port 541 and the top discharge port 521 are in opposite positions, the top frame 52 is connected to the hopper 51, and a feed pipe 511 is arranged on one side of the hopper 51. In the initial state, the feed pipe 511 corresponds to the guide pipe.

[0040] During operation, when the rubber powder enters the hopper 51 through the guide tube 44, the conical structure of the hopper 51 allows the rubber powder to pass through the hopper 51 evenly to avoid the rubber powder being blocked in the hopper 51. Before the rubber powder enters the hopper 51, the vibration motor 57 is started. The rotation of the vibration motor 57 causes the screen structure 53 to shake left and right. The rubber powder that falls on the screen structure 53 passes through the rubber powder that does not meet the requirements of the screen structure 53 due to the shaking of the screen structure 53, and the rubber powder that does not meet the requirements of the screen structure 53 is retained above the screen structure 53. The top discharge port 521 and the bottom discharge port 541 opened on both sides of the top frame 52 and the bottom frame 54 can be connected to a collection box (not shown in the figure) respectively. It is arranged on the storage plate, and the top end of the vibration motor 57 is connected to the bottom frame 54 through the connecting plate 573, and the bottom frame 54 is fixedly connected to the top frame 52 and the screen structure 53. Therefore, when the vibration motor 57 drives the bottom frame 54 to shake, the top frame 52 and the screen structure 53 shake at the same time, and the rubber powder is screened. When the bottom frame 54 and the top frame 52 shake, the screened rubber powder enters the collection box (not shown in the figure) through the bottom discharge port 541 of the bottom frame 54, and the rubber powder that does not meet the screening standard enters the collection box (not shown in the figure) through the top discharge port 521. By arranging a spring 55 between the base 56 and the bottom frame 54, the vibration of the base 56 on the storage plate is reduced to avoid damage to the device due to excessive vibration.

[0041] The screen structure 53 includes a conical block 531, a connecting spring 532, an arc-shaped push plate 533 and a screen 534. The screen 534 is arranged between the top frame 52 and the bottom frame 54. A conical block 531 is arranged in the middle of the screen 534. Connecting springs 532 are arranged in an array around the conical block 531, and an arc-shaped push plate 533 is installed on the other end of the connecting spring 532. The bottom end of the arc-shaped push plate 533 is in contact with the surface of the screen. Screen holes are arranged in a circular array on the screen 534, and the shape of the screen holes is a conical structure that is narrow at the top and wide at the bottom.

[0042] During operation, the screen 534 is shaken by the vibration motor 57. When the rubber powder falls onto the screen structure 53, the rubber powder first contacts the conical block 531. The rubber powder hits the conical block 531 due to its own weight, so that the agglomerated rubber powder is dispersed by the collision with the conical block 531. At the same time, the conical block 531 is fixedly arranged on the surface of the screen 534 and a connecting spring 532 and an arc-shaped push plate 533 are arranged around the conical block 531. When the screen 534 shakes, the arc-shaped push plate 533 disperses the rubber powder gathered above the screen 534 to the surroundings of the screen 534 for screening, thereby accelerating the screening efficiency of the rubber powder and preventing the rubber powder from gathering in the middle of the screen 534, causing the screen 534 to be blocked. The narrow upper and wide lower screen holes can prevent the rubber powder from being blocked in the screen holes too much, so that the rubber powder that meets the screening conditions cannot be screened later.

[0043] An upper weight 571 is arranged above the vibration motor 57, and a lower weight 572 is arranged below the vibration motor 57, and the upper weight 571 and the lower weight 572 are arranged symmetrically. Through the arrangement of the upper weight 571 and the lower weight 572, the vibration force can be increased, and through the continuous rotation and eccentric effect of the upper weight 571 and the lower weight 572, the amplitude and vibration force of the vibration motor 57 are increased, so that the screening equipment can be driven more effectively.

[0044] A spherical protrusion 542 is provided on the bottom frame 54, and a material guide groove is opened in a ring array on the spherical protrusion 542. The rubber powder moves along the material guide groove. The setting of the spherical protrusion 542 can make the sieved rubber powder gather on the surface of the bottom frame 54, so as to avoid the rubber powder clogging in the sieve holes of the screen 534 during the subsequent cleaning, causing the rubber powder to fall back into the hopper 51 through the sieve holes. The rubber powder can be guided to flow to the edge of the bottom frame 54 through the material guide groove.

[0045] like Fig. 9 As shown, a discharge trough is provided on the side of the top frame 52 away from the rack 311, and a fixed rod 523 is provided in the middle of the discharge trough. A cover plate 522 is rotatably provided on the fixed rod 523. When cleaning the rubber powder blocked in the sieve hole, the vibration assembly 5 is driven to move on the fixed frame 3 through the gear rack mechanism 31, so that the discharge trough of the top frame 52 is directed toward the drop trough 13. At this time, the cover plate 522 can be rotated on the fixed rod 523, so that the rubber powder in the top frame 52 that does not meet the screening conditions falls into the storage chamber 14, and the rubber powder in the storage chamber 14 can be re-conveyed to the hopper 51 through the conveying mechanism 4, so that the rubber powder is screened for the second time.

[0046] A conical cavity 5221 is provided inside the cover plate 522, and a plurality of counterweight beads 5222 are arranged inside the conical cavity 5221. The cover plate 522 changes the position of the internal counterweight beads 5222 through the gear rack mechanism 31. When the discharge chute of the top frame 52 is perpendicular to the horizontal plane, the counterweight beads 5222 move to the bottom of the conical cavity 5221, and the cover plate 522 seals the top frame 52 to prevent leakage of rubber powder during screening. When the discharge chute of the top frame 52 is parallel to the horizontal plane, the counterweight beads 5222 move to the top of the conical cavity 5221. At this time, the cover plate 522 no longer seals the top frame 52, thereby cleaning the rubber powder inside the top frame 52.

[0047] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A rubber powder screening device for multi-stage separation of rubber powder, characterized in that: The invention comprises a base (1), wherein one end of the base (1) is provided with a material feeding port (11), and the other end of the base (1) is provided with a mounting groove (12), a material storage cavity (14) is provided inside the base (1), and inclined surfaces (141) are provided on both sides of the material storage cavity (14), a conveying mechanism (4) is provided in the material storage cavity (14), and a fixing frame (3) is installed in the mounting groove (12); The fixing frames (3) are symmetrically arranged on both sides of the installation groove (12), and the fixing frames (3) are connected by fixing columns (32). A gear rack mechanism (31) is arranged on the fixing frame (3). The fixing frame (3) is a triangular structure. Rotating shafts (33) are arranged at three corners of the fixing frame (3), and gears (312) are coaxially installed on the rotating shaft (33). The gears (312) are connected by racks (311). A storage plate is arranged on the rack (311), and a vibration assembly (5) is arranged on the storage plate. A driving motor (2) is arranged near the base (1) and the fixing frame (3), and the output end of the driving motor (2) is connected to the rotating shaft (33). A conveying mechanism (4) is arranged on one side of the fixing frame (3). In an initial state, the discharge port of the conveying mechanism (4) corresponds to the feed port (11) of the vibration component (5); The driving motor (2) drives the gear rack mechanism (31) to move, so that the rubber powder blocked by the vibrating component (5) after screening falls into the storage chamber (14), and the rubber powder is transported to the inside of the vibrating component (5) through the conveying mechanism (4), so that the rubber powder is screened again inside the vibrating component (5); The vibration assembly (5) comprises a hopper (51), a top frame (52), a screen structure (53), a bottom frame (54), a spring (55), a base (56) and a vibration motor (57). The base (56) is fixedly arranged on a storage plate. A bottom frame (54) is arranged above the base (56). The bottom frame (54) is connected to the base (56) via a spring (55). A vibration motor (57) is arranged inside the base (56). The vibration motor (57) is connected to the bottom frame (54) via a connecting plate (573). A bottom discharge port (541) is provided on one side of the bottom frame (54), a screen structure (53) is connected above the bottom frame (54), a top frame (52) is provided above the screen structure (53), a top discharge port (521) is provided on one side of the top frame (52), and the bottom discharge port (541) and the top discharge port (521) are in opposite positions, the top frame (52) is connected to the hopper (51), and a feed pipe (511) is provided on one side of the hopper (51), and in an initial state, the feed pipe (511) corresponds to the guide pipe; In the initial state, the vibration component (5) is located on the longest right-angled side of the fixed frame (3) and is connected to the conveying mechanism (4). When the vibration component (5) screens the rubber powder, the rack (311) drives the vibration component (5) to start moving around the fixed frame (3). During the movement of the vibration component (5) on the longest right-angled side, the rubber powder added to the interior of the vibration component (5) by the conveying mechanism (4) can be evenly screened. When the vibration component (5) moves to the oblique side of the fixed frame (3), the upper end of the vibration component (5) is facing downward. The vibration component (5) continues to move, thereby cleaning out the rubber powder that is blocked inside the sieve hole. When the vibration component (5) moves to the shortest right-angle side of the fixed frame (3), the vibration component (5) is parallel to the base (1). Through the structure of the vibration component (5), the rubber powder that is blocked inside is collected into the storage chamber (14), so that the rubber powder is screened for the second time by the conveying mechanism (4). When the gear rack mechanism (31) drives the vibration component (5) to move, the vibration component (5) is in a continuous startup process.

2. A rubber powder screening device according to claim 1, characterized in that: The conveying mechanism (4) comprises a conveying motor (41), a guide cover (42), an auger blade (43) and a material guide pipe (44); the conveying motor (41) is arranged below the base (1), and the conveying motor (41) is arranged perpendicular to the base (1); the output end of the conveying motor (41) penetrates the base (1), the output end of the conveying motor (41) is connected to the auger blade (43); the circumferential surface of the auger blade (43) is provided with a guide cover (42), and the guide cover (42) and the auger blade (43) are fitted to form a conveying cavity (45) for rubber powder; and the material guide pipe (44) is arranged at the top end of the guide cover (42).

3. A rubber powder screening device according to claim 2, characterized in that: Conical protrusions (431) are arranged in an equidistant array on the auger blade (43), and the conical protrusions (431) are arranged in the middle of the auger blade (43).

4. A rubber powder screening device according to claim 1, characterized in that: The screen structure (53) comprises a conical block (531), a connecting spring (532), an arc-shaped push plate (533) and a screen (534). The screen (534) is arranged between the top frame (52) and the bottom frame (54). A conical block (531) is arranged in the middle of the screen (534). Connecting springs (532) are arranged in an array around the conical block (531). The other end of the connecting spring (532) is installed with an arc-shaped push plate (533). The bottom end of the arc-shaped push plate (533) is in contact with the surface of the screen.

5. A rubber powder screening device according to claim 4, characterized in that: The sieve (534) is provided with sieve holes in a circular array, and the shape of the sieve holes is a conical structure that is narrow at the top and wide at the bottom.

6. A rubber powder screening device according to claim 1, characterized in that: An upper weight (571) is arranged above the vibration motor (57), and a lower weight (572) is arranged below the vibration motor (57), and the upper weight (571) and the lower weight (572) are symmetrically arranged.

7. A rubber powder screening device according to claim 1, characterized in that: The bottom frame (54) is provided with a spherical protrusion (542), and a material guide groove is provided in a circular array on the spherical protrusion (542), and the rubber powder moves along the material guide groove.

8. A rubber powder screening device according to claim 1, characterized in that: A discharge trough is provided on one side of the top frame (52) away from the rack (311), a fixing rod (523) is provided in the middle of the discharge trough, and a cover plate (522) is rotatably provided on the fixing rod (523).

9. A rubber powder screening device according to claim 8, characterized in that: A conical cavity (5221) is provided inside the cover plate (522), and a plurality of counterweight beads (5222) are arranged inside the conical cavity (5221). The cover plate (522) changes the position of the internal counterweight beads (5222) through a gear rack mechanism (31).

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