Screening equipment for producing glazing powder

Abstract

The invention discloses screening equipment for glazing powder production, and relates to the technical field of glazing powder production equipment.The equipment comprises a screening box, a material conveying pipe is fixed to the right end of the screening box, a feeding pipe is fixed to the bottom of one end of the material conveying pipe, and a material conveying channel is formed in the top of the joint of the material conveying pipe and the screening box; a material conveying structure used for conveying materials is arranged in the material conveying pipe. By adopting the combined design of the conical filter plate, the rotating groove, the first rotating ring, the second rotating ring and the spring, the micro-vibration effect in the screening process is achieved, in the rotating process of the screening structure, a first top ball in the rotating groove makes alternate contact with a second top ball on the first rotating ring, micro vibration is generated, and the screening effect is improved. Dispersion and passing of materials on the conical filter plate are facilitated, so that the screening efficiency is improved; in addition, the carding rods fixed to the lower end of the fixing plate can card the materials, the materials are prevented from being accumulated to block the filter holes, and the smooth screening process is further guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of overprint powder production equipment, in particular to screening equipment for overprint powder production. Background Art

[0002] In the field of overprinting powder production, screening equipment is a key link to ensure product quality and production efficiency. However, existing screening equipment for overprinting powder production has shortcomings in practical applications, affecting production efficiency and product quality.

[0003] Traditional screening equipment often utilizes a single-layer screening structure, making it difficult to meet the stringent particle size uniformity requirements of overprint varnish production. This single-layer screening structure can easily lead to incomplete screening and uneven particle size distribution for materials with a wide particle size distribution, resulting in inconsistent product quality.

[0004] Based on this, a screening device for producing overprint varnish is now provided, which can eliminate the disadvantages of existing equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a screening device for producing overprint powder to solve the problem that the single-level screening structure in the background technology is prone to incomplete screening and uneven particle size for materials with a wide particle size distribution during the screening process.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A screening device for producing overprint powder, comprising a screening box, a material transport pipe fixed to the right end of the screening box, a feed pipe fixed to the bottom of one end of the material transport pipe, a material conveying channel provided at the top of the connection between the material transport pipe and the screening box, and a material transport structure for transporting materials provided inside the material transport pipe;

[0008] The inside of the screening box is provided with a conical partition plate and three screening structures for screening materials from top to bottom, and the conical partition plate and the three screening structures divide the internal space of the screening box from top to bottom into a crushing chamber, a screening chamber 1, a screening chamber 2, a screening chamber 3 and a conical chamber, and a discharge pipe is fixed at the lower end of the screening box;

[0009] The outer circumference of the conical partition plate is provided with a feed opening communicating with the crushing chamber and the screening chamber.

[0010] The three screening structures are connected by two rotating rods;

[0011] A crushing structure for crushing materials is provided inside the crushing chamber;

[0012] The connection between the material transport pipe and the screening box is provided with three material distribution channels, and the interior of the screening box is connected to the interiors of the first screening chamber, the second screening chamber and the third screening chamber respectively through the three material distribution channels;

[0013] The upper end of the screening box is provided with a driving structure for driving the material transporting structure and the crushing structure to operate.

[0014] Preferably, the crushing structure includes a rotating rod 1 rotatably installed in the crushing chamber area, the upper end of the rotating rod 1 is connected to the driving structure, the lower end of the rotating rod passes through the conical partition plate and is connected to the screening structure through the rotating rod 2, the rotating rod 1 is rotatably connected to the conical partition plate, the conical partition plate is fixed to the inner wall of the screening box, and a plurality of crushing knives are fixed to one side wall of the rotating rod.

[0015] Preferably, a discharge plate is fixed to one side wall of the rotating rod, and the lower end surface of the discharge plate is in contact with the upper end surface of the conical partition plate.

[0016] Preferably, the driving structure includes a motor installed at the upper end of the screening box, the output end of the motor is fixedly connected to the main wheel, the middle part of the lower end of the main wheel is fixedly connected to a rotating rod located inside the crushing chamber, the main wheel is connected to the slave wheel through a transmission belt, and the middle part of the lower end of the slave wheel is fixedly connected to the material transport structure inside the material transport pipe.

[0017] Preferably, the material transport structure includes an auger rod and auger blades rotatably installed inside the material transport pipe, the auger blades are fixed to the outer wall of the auger rod, and the upper end of the auger rod extends to the top of the material transport pipe and is fixedly connected to the middle of the lower end of the slave wheel.

[0018] Preferably, the three screening structures are equidistantly distributed along the rotating rod 2, and four limit blocks are fixed at equal angles at the connection position between the rotating rod 2 and the screening structure. The screening structure includes a conical filter plate, and a plum blossom mouth is provided in the middle of the conical filter plate to cooperate with the rotating rod 2 and the four limit blocks. The outer wall of the conical filter plate fits the inner wall of the screening box, and the inner wall of the screening box is provided with a rotating groove. A plurality of top balls 1 are fixed at equal angles on the top of the rotating groove. A rotating ring 1 and a rotating ring 2 are rotatably installed inside the rotating groove. The rotating ring 1 and the rotating ring 2 are fixed to each other by a spring, and a plurality of top balls 2 are fixed at equal angles on the upper end of the rotating ring 1. The inner wall of the rotating ring 1 is fixed to the outer wall of the conical filter plate.

[0019] Preferably, a fixed plate is provided above the screening structure, the inner wall of the screening box is fixedly connected to one end of the fixed plate, a fixed ring is fixed to the other end of the fixed plate, the inner wall of the fixed ring is rotatably connected to the two outer walls of the rotating rod, and a plurality of combing rods are fixed to the lower end of the fixed plate.

[0020] Preferably, the pore sizes of the filter holes of the three conical filter plates decrease in sequence from top to bottom.

[0021] Preferably, the two lower ends of the rotating rod are fixedly connected to the scraper through a connecting rod, and the scraper is in contact with the inner wall of the conical cavity.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention achieves a micro-vibration effect during the screening process by adopting a combined design of a conical filter plate, a rotating groove, a rotating ring 1, a rotating ring 2, and a spring. During the rotation of the screening structure, the top ball 1 in the rotating groove and the top ball 2 on the rotating ring 1 alternately contact each other, generating tiny vibrations, which helps to disperse and pass the material on the conical filter plate, thereby improving the screening efficiency. In addition, the combing rod fixed at the lower end of the fixed plate can comb the material to prevent material accumulation and clogging of the filter holes, further ensuring the smooth progress of the screening process.

[0024] 2. The present invention realizes efficient, multi-stage crushing and screening integrated processing of materials in the production process of overprint powder by arranging conical partition plates distributed from top to bottom and three screening structures with decreasing apertures in sequence inside the screening box, and combining the crushing structure, the feeding channel and the material transport structure. The material transport structure ensures that the material is continuously and stably transported to the crushing chamber, the crushing structure efficiently crushes the material, the screening structure ensures uniform particle size of the material through a multi-stage screening mechanism, and the micro-vibration assisted screening and anti-blocking design improve the screening efficiency and equipment stability. The screening structure and the feeding channel enable the material after preliminary screening to enter the screening process again, and the material that does not reach the specified particle size is screened multiple times to ensure that the raw materials can be fully and effectively utilized, reducing raw material waste. At the same time, the proportion of qualified products obtained after multiple screenings is significantly improved, further improving the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the crushing structure and conical partition plate of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the discharge plate of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the crushing structure of the present invention.

[0030] Figure 6 Schematic diagram of the structure of the screening structure of the present invention.

[0031] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at position A in the figure.

[0032] Reference numerals: 1. Material transport pipe; 11. Material feed pipe; 12. Material transport channel; 2. Screening box; 21. Crushing chamber; 22. Screening chamber 1; 23. Screening chamber 2; 24. Screening chamber 3; 25. Conical chamber; 26. Material discharge pipe; 27. Material distribution channel; 28. Rotating trough; 281. Top ball 1; 3. Material transport structure; 31. Auger rod; 32. Auger blade; 4. Driving structure; 41. Motor; 42. Main wheel; 43. Transmission belt; 44. Follower wheel; 5. Crushing structure; 51. Rotating rod 1; 52. Crushing knife; 61. Conical partition plate; 62. Feeding port; 63. Discharge plate; 7. Screening structure; 71. Conical filter plate; 72. Plum blossom mouth; 73. Rotating ring 1; 74. Top ball 2; 75. Spring; 76. Rotating ring 2; 77. Fixed ring; 78. Fixed plate; 79. Combing rod; 80. Rotating rod 2; 801. Limit block; 81. Connecting rod; 82. Scraper. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0034] In one embodiment, Figure 1-Figure 7 As shown, a screening device for producing overprint powder includes a screening box 2, a material transport pipe 1 is fixed to the right end of the screening box 2, a feed pipe 11 is fixed to the bottom of one end of the material transport pipe 1, a material conveying channel 12 is provided at the top of the connection between the material transport pipe 1 and the screening box 2, and a material transport structure 3 for transporting materials is provided inside the material transport pipe 1;

[0035] The interior of the screening box 2 is provided with a conical partition plate 61 and three screening structures 7 for screening materials from top to bottom. The conical partition plate 61 and the three screening structures 7 divide the interior space of the screening box 2 into a crushing chamber 21, a screening chamber 1 22, a screening chamber 2 23, a screening chamber 3 24 and a conical chamber 25 from top to bottom. A discharge pipe 26 is fixed at the lower end of the screening box 2.

[0036] The outer circumference of the conical partition plate 61 is provided with a feed opening 62 which connects the crushing chamber 21 and the screening chamber 1 22;

[0037] The three screening structures 7 are connected by a second rotating rod 80;

[0038] The pulverizing chamber 21 is provided with a pulverizing structure 5 for pulverizing the material;

[0039] Three material distribution channels 27 are provided at the connection between the material transport pipe 1 and the screening box 2. The interior of the screening box 2 is connected to the interior of the screening chamber 1 22, the screening chamber 2 23, and the screening chamber 3 24 respectively through the three material distribution channels 27.

[0040] The upper end of the screening box 2 is provided with a driving structure 4 for driving the material transporting structure 3 and the crushing structure 5 to operate.

[0041] In this embodiment, after the material enters the material transport pipe 1, it begins to be transported upward under the action of the material transport structure 3, and is ready to enter the screening box 2 for subsequent processing;

[0042] The driving structure 4 is activated, driving the material transporting structure 3 to push the material up along the material transporting pipe 1 and into the crushing chamber 21 through the material conveying channel 12. At the same time, the driving structure 4 also drives the crushing structure 5 to crush the material entering the crushing chamber 21;

[0043] After three levels of screening by the screening structure 7, the materials that meet the specifications enter the conical cavity 25 and are finally discharged from the equipment through the discharge pipe 26, completing the entire screening process.

[0044] In an optional embodiment, the crushing structure 5 includes a rotating rod 51 rotatably installed in the crushing chamber 21 area, the upper end of the rotating rod 51 is connected to the driving structure 4, the lower end of the rotating rod 51 passes through the conical partition plate 61 and is connected to the screening structure 7 through the rotating rod 2 80, the rotating rod 51 is rotatably connected to the conical partition plate 61, the conical partition plate 61 is fixed to the inner wall of the screening box 2, and a plurality of crushing knives 52 are fixed to the side wall of the rotating rod 51.

[0045] It should be noted that, driven by the high-speed rotation of the driving structure 4, the material entering the crushing chamber 21 is efficiently crushed to meet the particle size requirements of subsequent screening.

[0046] In an optional embodiment, a discharge plate 63 is fixed to the side wall of the rotating rod 51 , and the lower end surface of the discharge plate 63 is in contact with the upper end surface of the conical partition plate 61 .

[0047] It should be noted that when the rotating rod 51 rotates, the discharge plate 63 is driven to rotate, so that the crushed materials are pushed by the discharge plate 63 and smoothly enter the next screening stage through the discharge port 62 on the conical partition plate 61.

[0048] In an optional embodiment, the driving structure 4 includes a motor 41 installed at the upper end of the screening box 2, the output end of the motor 41 is fixedly connected to the main wheel 42, the middle part of the lower end of the main wheel 42 is fixedly connected to the rotating rod 51 located inside the crushing chamber 21, the main wheel 42 is connected to the slave wheel 44 through the transmission belt 43, and the middle part of the lower end of the slave wheel 44 is fixedly connected to the material transport structure 3 inside the material transport pipe 1.

[0049] It should be noted that the middle part of the lower end of the main wheel 42 is fixedly connected to the rotating rod 1 51, and is connected to the slave wheel 44 through the transmission belt 43. The middle part of the lower end of the slave wheel 44 is connected to the material transport structure 3 to achieve power transmission.

[0050] In an optional embodiment, the material transport structure 3 includes an auger rod 31 and an auger blade 32 rotatably installed inside the material transport pipe 1, the auger blade 32 is fixed to the outer wall of the auger rod 31, and the upper end of the auger rod 31 extends to the top of the material transport pipe 1 and is fixedly connected to the middle of the lower end of the pulley 44.

[0051] It should be noted that when the drive mechanism 4 is activated, power is transmitted to the auger shaft 31 via the pulley 44, causing it to begin rotating. The rotation of the auger shaft 31 drives the auger blades 32 to rotate synchronously, thereby propelling the material upward within the conveyor pipe 1. This design not only ensures continuous material transportation but also improves transportation efficiency, providing a stable material supply for subsequent crushing and screening operations.

[0052] In an optional embodiment, the three screening structures 7 are equidistantly distributed along the rotating rod 2 80, and four limit blocks 801 are fixed at equal angles at the connection position between the rotating rod 2 80 and the screening structure 7. The screening structure 7 includes a conical filter plate 71, and a plum blossom mouth 72 is provided in the middle of the conical filter plate 71 to cooperate with the rotating rod 2 80 and the four limit blocks 801. The outer wall of the conical filter plate 71 is fitted with the inner wall of the screening box 2, and the inner wall of the screening box 2 is provided with a rotating groove 28. A plurality of top balls 281 are fixed at equal angles on the top of the rotating groove 28. A rotating ring 1 73 and a rotating ring 2 76 are rotatably installed inside the rotating groove 28. The rotating ring 1 73 and the rotating ring 2 76 are fixed by a spring 75. A plurality of top balls 2 74 are fixed at equal angles on the upper end of the rotating ring 1 73, and the inner wall of the rotating ring 1 73 is fixed to the outer wall of the conical filter plate 71.

[0053] It should be noted that during the rotation of the screening structure 7, the alternating contact between the top ball 1 281 and the top ball 2 74 will generate slight vibrations, which helps to disperse and pass the materials on the conical filter plate 71, thereby improving the screening efficiency.

[0054] In an optional embodiment, a fixed plate 78 is provided above the screening structure 7, the inner wall of the screening box 2 is fixedly connected to one end of the fixed plate 78, a fixed ring 77 is fixed to the other end of the fixed plate 78, the inner wall of the fixed ring 77 is rotatably connected to the outer wall of the rotating rod 2 80, and a plurality of combing rods 79 are fixed to the lower end of the fixed plate 78.

[0055] It should be noted that the plurality of combing rods 79 fixed at the lower end of the fixed plate 78 can comb the material to prevent the material from accumulating and clogging the filter holes.

[0056] In an optional embodiment, the filter holes of the three conical filter plates 71 have pore sizes that decrease in sequence from top to bottom.

[0057] It should be noted that by providing three conical filter plates 71 with decreasing apertures, multi-stage screening of the material is achieved. The material first passes through the filter plate with the largest aperture for preliminary screening to remove large particles of impurities, and then passes through filter plates with gradually decreasing apertures for more refined screening.

[0058] In an optional embodiment, the lower end of the second rotating rod 80 is fixedly connected to a scraper 82 via a connecting rod 81 , and the scraper 82 is in contact with the inner wall of the conical cavity 25 .

[0059] It should be noted that the scraper 82 fixed at the lower end of the rotating rod 80 by the connecting rod 81 is in contact with the inner wall of the conical cavity 25, which can prevent the material from accumulating on the inner wall of the conical cavity 25.

[0060] The above embodiment discloses a screening device for producing covering powder, wherein the motor 41 in the driving structure 4 is started, and the output end of the motor 41 drives the main wheel 42 to rotate. On the one hand, the main wheel 42 drives the rotating rod 51 located inside the crushing chamber 21 to rotate, and the rotation of the rotating rod 51 drives a number of crushing knives 52 fixed on its side wall to crush the material entering the crushing chamber 21; on the other hand, the main wheel 42 drives the slave wheel 44 to rotate through the transmission belt 43, and the slave wheel 44 drives the auger rod 31 in the material transport structure 3 to rotate, and the auger rod 31 drives the auger blade 32 to rotate, and the material enters the material transport pipe 1 from the feed pipe 11. Under the push of the auger blade 32, the material is transported upward along the material transport pipe 1 and enters the crushing chamber 21 through the feed channel 12.

[0061] The crushed material enters the screening chamber 1 22 through the discharge port 62 on the conical partition plate 61 under the action of the discharge plate 63. When the rotating rod 1 51 rotates, it also drives the three screening structures 7 to rotate through the rotating rod 2 80.

[0062] After the material enters the screening chamber 1 22, under the continuous rotation and screening action of the first conical filter plate 71, the material that meets the aperture specifications of the filter plate can smoothly pass through the filter holes and then fall into the screening chamber 2 23 below; and the non-compliant material that fails to pass through the aperture of the filter plate will, under the action of the internal structure of the equipment, pass through the material distribution channel 27 connected to it and enter the screening box 2 again, re-participate in the entire screening process, and undergo subsequent crushing and screening processing.

[0063] When material enters screening chamber 23, the second conical filter plate 71 begins its screening process. As it rotates and filters, only material that meets the plate's aperture requirements is allowed to pass through and enter screening chamber 3 24. Substandard material also flows through distribution channel 27 and back into screening box 2, undergoing a further round of screening, ensuring that every particle is fully processed.

[0064] After the material enters screening chamber 3 24, it undergoes a final fine screening by the third conical filter plate 71. Material that meets the plate's pore size specifications passes smoothly through and enters conical chamber 25 for collection. Material that still does not meet the specifications passes through distribution channel 27 and returns to screening box 2, where the crushing and screening process repeats until it meets the acceptable standards.

[0065] Finally, the material screened by the three screening structures 7 enters the conical cavity 25 and is finally discharged from the discharge pipe 26 .

[0066] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A screening device for producing overprint varnish, characterized in that: It comprises a screening box (2), a material transport pipe (1) is fixed to the right end of the screening box (2), a feed pipe (11) is fixed to the bottom of one end of the material transport pipe (1), a material conveying channel (12) is provided at the top of the connection between the material transport pipe (1) and the screening box (2), and a material transport structure (3) for transporting materials is provided inside the material transport pipe (1); The screening box (2) is provided with a conical partition plate (61) and three screening structures (7) for screening materials in sequence from top to bottom, and the conical partition plate (61) and the three screening structures (7) divide the internal space of the screening box (2) into a crushing chamber (21), a screening chamber 1 (22), a screening chamber 2 (23), a screening chamber 3 (24) and a conical chamber (25) in sequence from top to bottom. A discharge pipe (26) is fixed at the lower end of the screening box (2); The outer circumferential surface of the conical partition plate (61) is provided with a discharge port (62) communicating with the crushing chamber (21) and the screening chamber (22); The three screening structures (7) are connected via a second rotating rod (80); A pulverizing structure (5) for pulverizing materials is provided inside the pulverizing chamber (21); Three material distribution channels (27) are provided at the connection between the material transport pipe (1) and the screening box (2), and the interior of the screening box (2) is respectively connected to the interior of the first screening chamber (22), the second screening chamber (23), and the third screening chamber (24) through the three material distribution channels (27); The upper end of the screening box (2) is provided with a driving structure (4) for driving the material transport structure (3) and the crushing structure (5) to operate.

2. The screening device for producing overprint varnish according to claim 1, characterized in that: The crushing structure (5) includes a rotating rod (51) rotatably mounted in the crushing chamber (21) area, the upper end of the rotating rod (51) being connected to the driving structure (4), the lower end of the rotating rod (51) passing through the conical partition plate (61) and connected to the screening structure (7) via the rotating rod (80), the rotating rod (51) being rotatably connected to the conical partition plate (61), the conical partition plate (61) being fixed to the inner wall of the screening box (2), and a plurality of crushing knives (52) being fixed to the side wall of the rotating rod (51).

3. The screening device for producing overprint varnish according to claim 2, characterized in that: A discharge plate (63) is fixed to the side wall of the rotating rod (51), and the lower end surface of the discharge plate (63) is in contact with the upper end surface of the conical partition plate (61).

4. The screening device for producing overprint varnish according to claim 2, characterized in that: The driving structure (4) comprises a motor (41) mounted on the upper end of the screening box (2); the output end of the motor (41) is fixedly connected to a main wheel (42); the middle portion of the lower end of the main wheel (42) is fixedly connected to a rotating rod (51) located inside the crushing chamber (21); the main wheel (42) is connected to a slave wheel (44) via a transmission belt (43); the middle portion of the lower end of the slave wheel (44) is fixedly connected to a material transport structure (3) inside the material transport pipe (1).

5. The screening device for producing overprint varnish according to claim 4, characterized in that: The material transport structure (3) comprises an auger rod (31) and an auger blade (32) rotatably mounted inside the material transport pipe (1); the auger blade (32) is fixed to the outer wall of the auger rod (31); the upper end of the auger rod (31) extends to the top of the material transport pipe (1) and is fixedly connected to the middle of the lower end of the pulley (44).

6. The screening device for producing overprint varnish according to claim 2, characterized in that: The three screening structures (7) are equidistantly distributed along the second rotating rod (80), and four limit blocks (801) are fixed at equal angles at the connection position between the second rotating rod (80) and the screening structure (7). The screening structure (7) includes a conical filter plate (71), and a plum blossom mouth (72) is provided in the middle of the conical filter plate (71) to match the second rotating rod (80) and the four limit blocks (801). The outer wall of the conical filter plate (71) is in contact with the inner wall of the screening box (2), and the inner wall of the screening box (2) is A rotating groove (28) is opened on the wall, and a plurality of top balls (281) are fixed at equal angles on the top of the rotating groove (28). A rotating ring (73) and a rotating ring (76) are rotatably installed inside the rotating groove (28). The rotating ring (73) and the rotating ring (76) are fixed to each other through a spring (75). A plurality of top balls (74) are fixed at equal angles on the upper end of the rotating ring (73). The inner wall of the rotating ring (73) is fixed to the outer wall of the conical filter plate (71).

7. The screening device for producing overprint varnish according to claim 6, characterized in that: A fixed plate (78) is provided above the screening structure (7), the inner wall of the screening box (2) is fixedly connected to one end of the fixed plate (78), a fixed ring (77) is fixed to the other end of the fixed plate (78), the inner wall of the fixed ring (77) is rotatably connected to the outer wall of the second rotating rod (80), and a plurality of combing rods (79) are fixed to the lower end of the fixed plate (78).

8. The screening device for producing overprint varnish according to claim 6, characterized in that: The filter holes of the three conical filter plates (71) have apertures that decrease in order from top to bottom.

9. The screening device for producing overprint varnish according to claim 1, characterized in that: The lower end of the second rotating rod (80) is fixedly connected to a scraper (82) via a connecting rod (81), and the scraper (82) is in contact with the inner wall of the tapered cavity (25).

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