Rotary screen with secondary screening function

Abstract

The application discloses a cyclone screen with secondary screening function and belongs to the technical field of food screening. The cyclone screen comprises a bottom plate, a screen barrel, a spiral feeding machine, a crushing barrel and a discharging assembly. The screen barrel is rotationally arranged on the top of the bottom plate, and the inner side of the screen barrel is provided with a conical screen plate. The spiral feeding machine is arranged at the bottom of the screen barrel and is used for transporting large-particle materials. The crushing barrel is arranged at the top of the spiral feeding machine and is arranged at the top of the screen barrel and is used for crushing and processing large-particle materials and feeding the large-particle materials into the screen barrel. The discharging assembly is arranged on the inner side of the screen barrel and is used for transporting large-particle materials screened to the inner side of the spiral feeding machine. The application effectively solves the problems that the conical structure at the bottom of the metal screen bin easily causes the adhesion and residue of vegetable materials, and the large-particle materials need to be manually collected and transferred to a crushing device, thereby causing a complicated process and low efficiency, and realizes the effects of reducing material residue accumulation, automatically crushing the large-particle materials and secondary screening.

Description

Technical Field

[0001] This application relates to the field of food screening technology, and more specifically, to a rotary screen with a secondary screening function. Background Technology

[0002] In the processing of leafy greens, carrots, and other foods, it is often necessary to perform precise screening of semi-finished materials that have been pre-cut and dried. The sorting needs to be done according to the size of the materials. Usually, qualified materials are screened out and directly supplied to downstream products, while unqualified large particles need to be crushed and screened again to ensure material utilization and product qualification rate.

[0003] In related technologies, to address the issues of small screening capacity and low screening efficiency of rotary screens, for example, patent CN222197703U provides a rotary screen. This rotary screen introduces materials into various metal mesh bins through various guide pipes, thereby dispersing the materials. The longitudinally distributed metal mesh bins can reduce the footprint. During the screening process, the drive unit controls the telescopic rod to retract. The through-hole of the feed pipe is located outside the metal mesh bin. The drive unit drives the feed pipe to rotate, thereby driving the metal mesh bin to rotate. Under the action of centrifugal force, small particles of material will fall out from the mesh of the metal mesh bin, while large particles of material will remain inside the metal mesh bin.

[0004] Although the existing technical solutions mentioned above improve screening efficiency by setting up multiple feed pipes, the bottom of the metal mesh bin has a fixed conical structure, and vegetable materials are easy to adhere to the conical surface and the feed hole, resulting in residue accumulation. In addition, large particles need to be manually collected and transferred to crushing equipment for processing before being reintroduced into the screening system, which is a cumbersome and inefficient process.

[0005] In view of this, we propose a rotary screen with a secondary screening function. Utility Model Content

[0006] The purpose of this application is to provide a rotary screen with a secondary screening function, which can effectively solve the problems in the prior art where the conical structure at the bottom of the metal mesh bin easily causes vegetable material to adhere and remain, and large particles need to be manually collected and transferred to the crushing equipment, resulting in a cumbersome and inefficient process. It achieves the effect of reducing material residue accumulation and automating the crushing and secondary screening of large particles.

[0007] This application provides a rotary screen with secondary screening function, including: Base plate; A sieve barrel is rotatably mounted on the top of the base plate, and a conical sieve plate is provided on the inner side of the sieve barrel; The screw conveyor is located at the bottom of the screen barrel and is used to transport large particles of material. A crushing barrel is installed on top of the screw conveyor and on top of the screen barrel. It is used to crush large particles of material and feed them into the screen barrel. The feeding assembly, located inside the screen barrel, is used to transport large particles of material after screening to the inside of the screw conveyor.

[0008] As an optional solution to the technical solution of this application, the conical screen plate is fixedly installed on the inner side of the screen barrel by bolts, a gear A is fixedly installed on the outer side of the screen barrel, a gear B is meshed on the outer side of the gear A, and the gear B is fixedly installed on the output end of the drive motor A by a drive column. The bottoms of both gear A and gear B are rotatably mounted on the top of the support frame via bearing B, and the support frame is fixedly mounted on the top of the base plate.

[0009] As an optional solution to the technical solution of this application, the top of the screen barrel is rotatably provided with a top plate A, the top of the top plate A is fixedly provided with a feed pipe, the crushing barrel is fixedly provided on the top of the top plate A, and the bottom of the crushing barrel is provided with an electromagnetic valve for controlling the connection between the crushing barrel and the screen barrel.

[0010] As an optional solution to the technical solution of this application, a top plate B is detachably provided on the top of the crushing barrel, a connecting frame is fixedly provided on the top of the top plate B, a drive motor B is fixedly provided on the inner side of the connecting frame, a gear C is fixedly provided on the output end of the drive motor B, a gear D is meshed on the outer side of the gear C, the gear C and the gear D are rotatably provided on the top of the top plate B through bearings, and a crushing rod is fixedly provided on the inner side of both the gear C and the gear D, and the crushing rod is provided on the inner side of the crushing barrel.

[0011] As an optional solution to the technical solution of this application, a bearing A is provided on the inner side of the conical screen plate, the conical screen plate is fixedly disposed with the outer ring of the bearing A, and a conical frame is fixedly disposed at the bottom of the screen barrel. The feeding assembly includes a decorative tube, which is rotatably connected to a conical frame via a bearing C. The inner ring of the bearing A has a decorative hole, and the outer side of the decorative tube engages with the inner ring of the bearing A. A connecting barrel is fixedly mounted on the top of the decorative tube, and an opening is provided on the outer side of the connecting barrel. A sleeve is slidably mounted on the outer side of the connecting barrel, and a connecting plate is fixedly mounted on the bottom of the sleeve. The connecting plate is slidably mounted with the opening, and the connecting plate is fixedly mounted on the output end of an electric push rod. The electric push rod is fixedly mounted on the inner side of a top plate C, and the top plate C is detachably mounted on the top of the sleeve. The bottom of the decorative tube is fixed to the end of a screw feeder, and the sleeve is slidably mounted on the inner side of the top plate A.

[0012] As an optional solution to the technical solution of this application, an inclined platform is fixedly provided on the top of the base plate, the inclined platform is located between the conical frame and the screw feeder, and a collection box is slidably provided on the inner side of the base plate at the bottom of the conical frame.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: (1) This application adopts a feeding component, a conical screen plate, a screw feeder and a crushing barrel. Through the opening and closing action of the feeding component and the centrifugal force of the screen barrel, large particles of material are quickly slid down the conical surface of the conical screen plate to the screw feeder. After being crushed by the crushing barrel, they are reintroduced into the screen barrel to complete the secondary screening. Therefore, it effectively solves the problems in the prior art where the conical structure at the bottom of the metal mesh bin easily causes vegetable material to adhere and remain, and large particles of material need to be manually collected and transferred to the crushing equipment, resulting in a complicated process and low efficiency. It achieves the effect of reducing material residue accumulation and automatically crushing and screening large particles of material.

[0014] (2) The conical screen plate is slidably installed inside the screen barrel and then fixed by bolts, which makes it convenient to clean and replace the conical screen plate; the top of the crushing barrel adopts a detachable top plate B design, which makes it convenient to maintain the internal crushing rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a rotary screen with secondary screening function disclosed in a preferred embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of the crushing barrel in a rotary screen with secondary screening function disclosed in a preferred embodiment of this application. Figure 3 This is a schematic diagram of the structure of the screen barrel in a rotary screen with secondary screening function disclosed in a preferred embodiment of this application; Figure 4 This is a schematic diagram of the material feeding component of a rotary screen with secondary screening function disclosed in a preferred embodiment of this application; The following are the labels in the diagram: 1. Base plate; 11. Support frame; 12. Inclined platform; 13. Collection box; 2. Screen barrel; 21. Conical screen plate; 211. Bearing A; 22. Bolt; 23. Conical frame barrel; 24. Gear A; 25. Gear B; 26. Drive column; 27. Drive motor A; 28. Bearing B; 29. ​​Top plate A; 291. Feed pipe; 3. Screw feeder; 4. Crushing barrel; 41. Top plate B; 42. Connecting frame; 43. Drive motor B; 44. Gear C; 45. Gear D; 46. Crushing rod; 47. Solenoid valve; 5. Discharge assembly; 51. Flower shaft tube; 511. Bearing C; 52. Connecting barrel; 521. Through port; 53. Sleeve; 531. Connecting plate; 54. Electric push rod; 55. Top plate C. Detailed Implementation

[0016] The present application will be further described in detail below with reference to the accompanying drawings.

[0017] Reference Figure 1 and Figure 4 This application discloses a rotary screen with a secondary screening function, including a base plate 1, a screen barrel 2 rotatably mounted on the top of the base plate 1, a conical screen plate 21 mounted on the inner side of the screen barrel 2, a screw feeder 3 mounted on the bottom of the screen barrel 2 for transporting large particles of material, a crushing barrel 4 mounted on the top of the screw feeder 3 for crushing large particles of material and feeding them into the screen barrel 2, and a feeding assembly 5 mounted on the inner side of the screen barrel 2 for transporting the screened large particles of material to the inner side of the screw feeder 3. The screw feeder 3 includes a vertical pipe, a horizontal conveyor and an inclined conveyor.

[0018] By feeding the vegetable material to be screened into the screen barrel 2, the screen barrel 2 rotates and swirls. Under the action of centrifugal force, the material spreads along the conical surface of the conical screen plate 21. Qualified small particles fall through the mesh of the conical screen plate 21 and are collected. Unqualified large particles are intercepted on the surface of the conical screen plate 21 and guided to the screw conveyor 3 by the opening and closing action of the feeding component 5. After being crushed by the crushing barrel 4, they re-enter the screen barrel 2 for secondary screening, forming an automated closed-loop process. The vertical pipe of the screw conveyor 3 is connected to the bottom of the feeding component 5. The bottom of the vertical pipe is connected to the feeding end of the horizontal conveyor. The end of the horizontal conveyor away from the vertical pipe is connected to the feeding end of the inclined conveyor. The top of the inclined conveyor is connected to the top of the crushing barrel 4. The horizontal conveyor and the inclined conveyor are existing technology equipment and will not be described in detail here.

[0019] Reference Figure 1 and Figure 3 The conical screen plate 21 is fixedly installed on the inner side of the screen barrel 2 by bolts 22. A gear A24 is fixedly installed on the outer side of the screen barrel 2. A gear B25 is meshed on the outer side of the gear A24. The gear B25 is fixedly installed on the output end of the drive motor A27 by the drive column 26. The bottom of both gear A24 and gear B25 are rotatably installed on the top of the support frame 11 by bearing B28. The support frame 11 is fixedly installed on the top of the base plate 1.

[0020] By starting the drive motor A27, its output end drives the drive column 26 and gear B25 to rotate. Gear B25 drives gear A24 and screen barrel 2 to rotate synchronously through meshing transmission. The setting of bearing B28 reduces the frictional resistance of gear A24 and gear B25 during rotation, ensuring smooth and efficient transmission. At the same time, the support frame 11 provides stable support for the entire transmission structure, enabling screen barrel 2 to perform rotary screening operation at a stable speed, ensuring screening accuracy and efficiency.

[0021] Reference Figure 1 , Figure 2 and Figure 3 A top plate A29 is rotatably mounted on the top of the screen barrel 2. A feed pipe 291 is fixedly mounted on the top of the top plate A29. A crushing barrel 4 is fixedly mounted on the top of the top plate A29. A solenoid valve 47 is mounted on the bottom of the crushing barrel 4 to control the connection between the crushing barrel 4 and the screen barrel 2. A top plate B41 is detachably mounted on the top of the crushing barrel 4. A connecting frame 42 is fixedly mounted on the top of the top plate B41. A drive motor B43 is fixedly mounted on the inner side of the connecting frame 42. A gear C44 is fixedly mounted on the output end of the drive motor B43. A gear D45 is meshed on the outer side of the gear C44. The gears C44 and D45 are rotatably mounted on the top of the top plate B41 through bearings. A crushing rod 46 is fixedly mounted on the inner side of both the gears C44 and D45. The crushing rod 46 is located inside the crushing barrel 4.

[0022] When the screw conveyor 3 conveys large particles into the crushing barrel 4, the drive motor B43 is started. Its output end drives the gear C44 to rotate. The gear C44 drives the gear D45 to rotate in the opposite direction through meshing, thereby causing the two crushing rods 46 to rotate at high speed in opposite directions inside the crushing barrel 4. The crushing teeth on the crushing rods 46 are used to shear and impact the large particles to crush them to the size that meets the screening requirements. After crushing is completed, the solenoid valve 47 is opened, and the crushed material re-enters the screen barrel 2 through the feeding channel under the action of gravity for secondary screening. The solenoid valve 47 can precisely control the feeding timing and avoid insufficiently crushed material from entering the screen barrel 2 in advance and affecting the screening effect. When it is necessary to maintain or replace the crushing rod 46, the top plate B41 can be removed for operation, which is highly convenient.

[0023] Reference Figure 1 and Figure 3A bearing A211 is provided on the inner side of the conical screen plate 21. The outer ring of the conical screen plate 21 and the bearing A211 are fixedly installed. A conical frame barrel 23 is fixedly installed at the bottom of the screen barrel 2. The feeding assembly 5 includes a flower shaft tube 51. The flower shaft tube 51 is rotatably installed with the conical frame barrel 23 through the bearing C511. The inner ring of the bearing A211 is provided with a flower hole. The outer side of the flower shaft tube 51 cooperates with the inner ring of the bearing A211. A connecting barrel 52 is fixedly installed on the top of the flower shaft tube 51. The outer side of the connecting barrel 52 is open. A through-hole 521 is provided, and a sleeve 53 is slidably provided on the outside of the connecting barrel 52. A connecting plate 531 is fixedly provided at the bottom of the sleeve 53. The connecting plate 531 is slidably provided with the through-hole 521. The connecting plate 531 is fixedly provided at the output end of the electric push rod 54. The electric push rod 54 is fixedly provided on the inside of the top plate C55. The top plate C55 is detachably provided on the top of the sleeve 53. The bottom of the flower shaft tube 51 is fixed to the top of the vertical tube of the screw feeder 3. The sleeve 53 is slidably provided on the inside of the top plate A29.

[0024] In the initial stage of screening, the electric push rod 54 is in the extended state, which drives the connecting plate 531 and the sleeve 53 to slide downward, so that the sleeve 53 closes the opening 521 on the connecting barrel 52. At this time, large particles of material gradually accumulate on the surface of the conical screen plate 21. When the material accumulates to a certain amount, the electric push rod 54 is retracted, which drives the sleeve 53 to slide upward. The opening 521 then opens, and the large particles on the surface of the conical screen plate 21 enter the connecting bucket 52 and the inside of the flower shaft tube 51 through the opening 521 under the combined action of centrifugal force and gravity, and finally fall into the screw feeder 3 below. The design of the flower shaft tube 51 in conjunction with bearings A211 and C511 ensures that it does not affect the linear drive action of the electric push rod 54 while rotating with the screen barrel 2, thus achieving precise material feeding control in the rotating state.

[0025] Reference Figure 1 and Figure 3 An inclined platform 12 is fixedly installed on the top of the base plate 1. The inclined platform 12 is located between the conical frame barrel 23 and the screw feeder 3. A collection box 13 is slidably installed on the inner side of the base plate 1 at the bottom of the conical frame barrel 23.

[0026] Qualified materials slide down the conical surface of the conical frame 23 to the inclined platform 12. The inclined structure of the inclined platform 12 acts as a guide, directing the materials to the inside of the collection box 13. Other qualified materials fall directly into the collection box 13. The collection box 13 is set in a sliding manner. When it is full, it can be directly pulled out from the inside of the bottom plate 1 for unloading. The operation is convenient and efficient.

[0027] In summary, when using the rotary screen with secondary screening function disclosed in this application embodiment, the vegetable material to be screened is first put into the screen barrel 2 through the feed pipe 291. Then, the drive motor A27 is started, and the screen barrel 2 and the inner conical screen plate 21 are driven to rotate stably through the meshing transmission of gear A24 and gear B25. Under the action of centrifugal force, the material is rapidly spread along the conical surface of the conical screen plate 21. Among them, small particles of qualified size pass through the screen holes, part of which slides down the conical frame barrel 23 to the inclined platform 12, and enters the collection box 13 after being guided by the inclined platform 12. The other part falls directly into the collection box 13 to complete the collection. Large particles that do not meet the size requirements are intercepted and continuously accumulate on the surface of the conical screen plate 21. When the large particles accumulate to the preset amount, the electric push rod 54 is controlled to retract, which drives the sleeve 53 to slide upward so that the opening 521 of the connecting barrel 52 is fully exposed. Under the dual action of centrifugal force and gravity, the large particles enter the connecting barrel 52 and the flower shaft tube 51 through the opening 521, and finally fall into the feed end of the screw feeder 3. Start the screw conveyor 3 to transport large particles into the crushing barrel 4. Then start the drive motor B43. Through the reverse meshing of gear C44 and gear D45, drive the two crushing rods 46 to rotate at high speed to shear and crush the material. After crushing, open the solenoid valve 47. The crushed material falls back into the screen barrel 2 for secondary screening, forming an automated processing closed loop. After the screening operation is completed, the collection box 13 can be pulled out to unload the qualified materials. If equipment maintenance is required, the conical screen plate 21 and the crushing rod 46 can be cleaned, replaced or repaired by disassembling the top plate A29 and the top plate B41 respectively. The overall operation process is efficient and convenient, effectively improving the screening efficiency and material utilization rate in food processing.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A rotary screen with secondary screening function, characterized in that, Include: Base plate (1); A sieve barrel (2) is rotatably mounted on the top of the base plate (1), and a conical sieve plate (21) is provided on the inner side of the sieve barrel (2). The screw conveyor (3) is located at the bottom of the screen barrel (2) and is used to transport large particles of material. The crushing barrel (4) is set on the top of the screw feeder (3). The crushing barrel (4) is set on the top of the screen barrel (2) and is used to crush large particles and feed them into the screen barrel (2). The feeding assembly (5) is located inside the screen barrel (2) and is used to transport the screened large particles to the inside of the screw feeder (3).

2. The rotary screen with secondary screening function according to claim 1, characterized in that: The conical screen plate (21) is fixedly installed on the inner side of the screen barrel (2) by bolts (22). A gear A (24) is fixedly installed on the outer side of the screen barrel (2). A gear B (25) is meshed on the outer side of the gear A (24). The gear B (25) is fixedly installed on the output end of the drive motor A (27) by a drive column (26). The bottoms of gear A (24) and gear B (25) are rotatably mounted on the top of support frame (11) via bearing B (28), and support frame (11) is fixedly mounted on the top of base plate (1).

3. The rotary screen with secondary screening function according to claim 1, characterized in that: The top of the screen barrel (2) is rotatably provided with a top plate A (29), and the top of the top plate A (29) is fixedly provided with a feed pipe (291). The crushing barrel (4) is fixedly provided on the top of the top plate A (29), and the bottom of the crushing barrel (4) is provided with an electromagnetic valve (47) for controlling the connection between the crushing barrel (4) and the screen barrel (2).

4. The rotary screen with secondary screening function according to claim 1, characterized in that: The top of the crushing barrel (4) is detachably provided with a top plate B (41). A connecting frame (42) is fixedly provided on the top of the top plate B (41). A drive motor B (43) is fixedly provided on the inner side of the connecting frame (42). A gear C (44) is fixedly provided at the output end of the drive motor B (43). A gear D (45) is meshed on the outer side of the gear C (44). The gear C (44) and the gear D (45) are rotatably provided on the top of the top plate B (41) through bearings. A crushing rod (46) is fixedly provided on the inner side of both the gear C (44) and the gear D (45). The crushing rod (46) is provided on the inner side of the crushing barrel (4).

5. The rotary screen with secondary screening function according to claim 3, characterized in that: The inner side of the conical screen plate (21) is provided with a bearing A (211), the conical screen plate (21) and the outer ring of the bearing A (211) are fixedly arranged, and the bottom of the screen barrel (2) is fixedly provided with a conical frame barrel (23). The feeding assembly (5) includes a flower-shaped tube (51), which is rotatably connected to a conical frame barrel (23) via a bearing C (511). The inner ring of the bearing A (211) has a flower-shaped hole. The outer side of the flower-shaped tube (51) cooperates with the inner ring of the bearing A (211). A connecting barrel (52) is fixedly installed at the top of the flower-shaped tube (51). An opening (521) is provided on the outer side of the connecting barrel (52). A sleeve (53) is slidably installed on the outer side of the connecting barrel (52). A connecting plate (531) is fixedly installed at the bottom of the sleeve (53). The connecting plate (531) is slidably installed with the opening (521). The connecting plate (531) is fixedly installed at the output end of the electric push rod (54). The electric push rod (54) is fixedly installed on the inner side of the top plate C (55). The top plate C (55) is detachably installed on the top of the sleeve (53). The bottom of the flower shaft tube (51) is fixed to the end of the screw feeder (3). The sleeve (53) is slidably installed on the inner side of the top plate A (29).

6. The rotary screen with secondary screening function according to claim 5, characterized in that: An inclined platform (12) is fixedly installed on the top of the base plate (1). The inclined platform (12) is located between the conical frame barrel (23) and the screw feeder (3). A collection box (13) is slidably installed on the inner side of the base plate (1) at the bottom of the conical frame barrel (23).

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