A raw material screening mechanism for corn flour processing
Patent Information
- Application Number
- CN202522214363.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-20
AI Technical Summary
[0002]在玉米粉加工的原料筛选环节中，需要使用到筛选装置对玉米粒进行筛选，传统的筛选装置多为振动筛，传统振动筛的筛网多采用焊接、螺栓紧固等固定安装方式，当生产需求变化，如调整玉米粉粒度规格，需更换不同目数的筛网时，存在以下显著弊端，第一，操作流程繁琐，需使用专业工具逐一拆卸大量紧固件，如螺栓、螺母等，涉及多个操作步骤，消耗大量人力与时间，第二，停机时间过长，更换过程中设备需完全停机，对于连续化生产的玉米粉加工企业，过长的停机时间会直接导致产能下降，增加生产运营成本
1、本实用新型通过采用双向螺纹杆和限位块的限位机构，安装座表面开设与限位块适配的限位槽，当需要更换筛网时，只需转动双向螺纹杆，驱动两个限位块同步向安装槽内部滑动，使其与限位槽分离，即可解除安装座与框架的卡接关系，使其安装座带动筛选网从框架内部抽出更换，整个过程无需拆卸多余零部件，操作简便快捷；
Smart Images
Figure CN224793946U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of grain processing technology, and specifically relates to a raw material screening mechanism for corn flour processing. Background Technology
[0002] In the raw material screening stage of corn flour processing, screening devices are needed to screen corn kernels. Traditional screening devices are mostly vibrating screens. The screens of traditional vibrating screens are mostly fixed by welding, bolting and other methods. When production needs change, such as adjusting the particle size of corn flour and needing to replace the screens with different mesh sizes, there are the following significant drawbacks. First, the operation process is cumbersome. It is necessary to use professional tools to disassemble a large number of fasteners, such as bolts and nuts, involving multiple operation steps and consuming a lot of manpower and time. Second, the downtime is too long. The equipment needs to be completely shut down during the replacement process. For corn flour processing enterprises with continuous production, the long downtime will directly lead to a decrease in production capacity and increase production and operating costs. Utility Model Content
[0003] The purpose of this invention is to provide a raw material screening mechanism for corn flour processing, which has the advantage of quick replacement and adjustment of the screen material thickness.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a raw material screening mechanism for corn flour processing, comprising a frame, an installation base inserted into one end of the frame, a screening screen assembled inside the installation base, symmetrically arranged installation grooves inside the frame, symmetrically arranged limit grooves on the surface of the installation base, a limit mechanism between the two installation grooves, a hopper at the top of the frame, a sliding cavity assembled on one side of the hopper, a material blocking plate slidably engaged inside the sliding cavity, a support base fixedly connected to one side of the hopper, and an adjusting bolt threadedly connected to the top of the support base for rotatable connection with the material blocking plate.
[0005] The above technical solution is adopted as follows: This utility model uses a limiting mechanism of bidirectional threaded rod and limiting blocks. The surface of the mounting base is opened with a limiting groove that matches the limiting blocks. When the screen needs to be replaced, simply rotate the bidirectional threaded rod to drive the two limiting blocks to slide synchronously into the mounting groove, so that they are separated from the limiting groove. This releases the locking relationship between the mounting base and the frame, allowing the mounting base to pull the screen out from inside the frame for replacement. The whole process does not require disassembling extra parts, making the operation simple and quick. By installing a sliding cavity on the hopper, the height of the baffle plate can be adjusted by rotating the adjusting bolt. This allows the baffle plate to block the stacked material falling from inside the hopper, ensuring that the material is at the thickness of the screen during the screening process, avoiding stacking and ensuring the screening effect.
[0006] The present invention is further configured such that the limiting mechanism includes a bidirectional threaded rod rotatably connected between two mounting slots, and a limiting block that is threadedly connected to the bidirectional threaded rod is slidably connected inside the mounting slot, and the limiting block and the limiting slot are engaged.
[0007] The above technical solution works as follows: After the mounting base is inserted into the frame through the cooperation of the sliding block and the sliding groove, rotating the bidirectional threaded rod will cause the limiting blocks in the two mounting grooves to slide outward synchronously due to the opposite thread directions on both sides of the bidirectional threaded rod. This continues until the limiting blocks are engaged in the limiting grooves on the surface of the mounting base, thus firmly fixing the mounting base in the frame. This ensures that the mounting base and the screen will not shift or fall off due to vibration during the screening process, guaranteeing screening stability. When it is necessary to replace the screen with a different mesh size, rotating the bidirectional threaded rod in the opposite direction will cause the limiting blocks to slide inward along the mounting grooves and disengage from the limiting grooves, releasing the locking of the mounting base. At this time, the operator can easily pull out the mounting base using the handle to complete the screen replacement. After that, the mounting base can be reset, and the bidirectional threaded rod can be rotated again to complete the fixing. The entire process does not require disassembling bolts or other fasteners. The rotation of the threaded rod directly controls the extension and retraction of the limiting blocks, enabling quick disassembly and assembly of the mounting base and significantly improving the efficiency of screen replacement.
[0008] The present invention is further configured such that sliding blocks are symmetrically mounted on the surface of the mounting base, and sliding grooves that are slidably connected to the sliding blocks are provided inside the frame.
[0009] The above technical solution is adopted: during the process of inserting or removing the mounting base from the frame, the sliding block slides precisely along the sliding groove, providing a stable movement trajectory and support for the mounting base, ensuring that the mounting base can be accurately aligned with the preset installation position of the frame, avoiding the inability of the limiting block and the limiting groove to accurately engage due to alignment deviation, or the appearance of gaps between the mounting base and the frame, which would affect the screening stability.
[0010] The present invention is further configured such that a base is provided at the bottom of the frame, and a fixing seat is fixedly connected to the front and back of the frame and the front and back of the base, and a support spring is detachably connected between the two fixing seats.
[0011] The above technical solution employs the following: the support springs are elastic, effectively absorbing and buffering vibration energy when the frame vibrates under the action of the vibrator, reducing the impact of vibration on the equipment base and surrounding facilities, lowering noise during equipment operation, and preventing equipment parts from loosening or being damaged due to severe vibration. The elastic support of the support springs allows the frame to maintain a stable vibration amplitude and frequency during vibration, ensuring the screening effect of the screening mesh on corn raw materials, allowing the raw materials to move fully on the screen surface, improving screening efficiency and accuracy. The support springs adopt a detachable connection method, allowing for quick disassembly and replacement of new springs when they become fatigued or damaged, simplifying operation and reducing the difficulty and cost of equipment maintenance. The base provides a stable support foundation for the frame, and the cooperation between the fixed seat and the support springs further enhances the connection stability between the frame and the base, ensuring the structural reliability of the entire screening mechanism during operation and preventing the equipment from tilting or shifting due to vibration.
[0012] The present invention is further configured such that vibrators are mounted on both the front and back of the frame, and support plates fixedly connected to the front and back of the hopper are fixedly connected to the frame.
[0013] The above technical solution involves a vibrator that uses high-frequency vibration to drive the frame, mounting base, and screening screen within the frame to vibrate synchronously. This causes the corn raw material on the screen surface to jump and slide, achieving graded screening based on particle size differences. Symmetrically assembled on the front and back of the frame, it ensures balanced transmission of vibration force, preventing vibration deviation caused by unilateral force on the frame, thus improving screening efficiency and stability. The hopper is a key component for raw material feeding, and a support plate rigidly connects it to the frame. This counteracts the shaking caused by material impact and vibration during vibrator operation, preventing hopper displacement or loosening. Simultaneously, it provides stable support for the hopper, preventing raw material spillage or uneven feeding due to hopper instability during the feeding process, ensuring continuous screening.
[0014] The present invention is further configured such that a guide seat is fitted at the bottom of the hopper, and a pull handle is fixedly connected to one side of the mounting seat.
[0015] Using the above technical solution: After the corn raw material received by the hopper passes through the guide seat, the dispersed raw material can be gathered and directionally transported to the designated area of the screening screen through its converging structure, and the pull handle provides a clear force application point for pulling the mounting seat.
[0016] In summary, this utility model has the following beneficial effects: 1. This utility model adopts a limiting mechanism of bidirectional threaded rod and limiting block. The surface of the mounting base is opened with a limiting groove that matches the limiting block. When it is necessary to replace the screen, simply rotate the bidirectional threaded rod to drive the two limiting blocks to slide synchronously into the mounting groove, so that they are separated from the limiting groove. This releases the locking relationship between the mounting base and the frame, allowing the mounting base to pull the screen out from inside the frame for replacement. The whole process does not require disassembling extra parts, making the operation simple and quick. 2. This utility model has a sliding cavity installed on the hopper. When the adjusting bolt is rotated, the height of the material blocking plate can be adjusted so that the material blocking plate can block the stacked material falling from the inside of the hopper. This ensures that the material is on the screen during the screening process, avoids stacking, and ensures the screening effect. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural cross-sectional view of the present invention; Figure 3 This is a top sectional view of a partial structure of this utility model.
[0018] Reference numerals: 1. Frame; 2. Mounting base; 3. Screening mesh; 4. Mounting groove; 5. Limiting groove; 6. Limiting mechanism; 61. Bidirectional threaded rod; 62. Limiting block; 7. Hopper; 8. Sliding cavity; 9. Material blocking plate; 10. Support base; 11. Adjusting bolt; 12. Sliding block; 13. Sliding groove; 14. Base; 15. Fixed base; 16. Support spring; 17. Vibrator; 18. Support plate; 19. Guide seat; 20. Handle. Detailed Implementation
[0019] The present invention will be further described in detail below with reference to the accompanying drawings.
[0020] Example 1: refer to Figure 1 , Figure 2 and Figure 3A raw material screening mechanism for corn flour processing includes a frame 1, with a mounting base 2 inserted into one end of the frame 1. A screening screen 3 is assembled inside the mounting base 2. The frame 1 has symmetrically opened mounting grooves 4, and the surface of the mounting base 2 has symmetrically opened limiting grooves 5. A limiting mechanism 6 is provided between the two mounting grooves 4. By using a bidirectional threaded rod 61 and a limiting block 62 as the limiting mechanism 6, the limiting grooves 5 on the surface of the mounting base 2 are adapted to the limiting blocks 62. When it is necessary to replace the screen, simply rotate the bidirectional threaded rod 61 to drive the two limiting blocks 62 to slide synchronously into the mounting grooves 4, so that they are separated from the limiting grooves 5. This releases the locking relationship between the mounting base 2 and the frame 1, allowing the mounting base 2 to pull the screening screen 3 out of the frame 1 for replacement. The entire process does not require disassembling extra parts, making the operation simple and quick.
[0021] refer to Figure 2 and Figure 3 The limiting mechanism 6 includes a bidirectional threaded rod 61 rotatably connected between two mounting slots 4. A limiting block 62, threadedly connected to the bidirectional threaded rod 61, is slidably connected inside the mounting slot 4. The limiting block 62 engages with the limiting slot 5. By setting the bidirectional threaded rod 61 and the limiting block 62, when the mounting seat 2 is inserted into the frame 1 through the cooperation of the sliding block 12 and the sliding slot 13, rotating the bidirectional threaded rod 61 causes the limiting blocks 62 in the two mounting slots 4 to slide outwards synchronously due to the opposite thread directions on both sides of the bidirectional threaded rod 61. This continues until the limiting block 62 engages with the limiting slot 5 on the surface of the mounting seat 2, thereby firmly fixing the mounting seat 2 in the frame 1 and ensuring the screen... During the screening process, the mounting base 2 and the screen 3 will not shift or fall off due to vibration, ensuring screening stability. When it is necessary to replace the screen 3 with a different mesh size, the bidirectional threaded rod 61 is rotated in the opposite direction, and the limiting block 62 will slide inward along the mounting groove 4 and disengage from the limiting groove 5, releasing the lock on the mounting base 2. At this time, the operator can easily pull out the mounting base 2 through the pull handle 20 to complete the screen replacement. After that, the mounting base 2 is reset, and the bidirectional threaded rod 61 is rotated again to complete the fixation. The whole process does not require disassembling bolts or other fasteners. The extension and retraction of the limiting block 62 is directly controlled by the rotation of the threaded rod, realizing the quick disassembly and assembly of the mounting base 2 and greatly improving the screen replacement efficiency.
[0022] refer to Figure 3 The surface of the mounting base 2 is symmetrically equipped with sliding blocks 12, and the interior of the frame 1 is provided with sliding grooves 13 that are slidably connected to the sliding blocks 12. By setting the sliding blocks 12 and sliding grooves 13, during the process of the mounting base 2 being inserted into or removed from the frame 1, the sliding blocks 12 slide precisely along the sliding grooves 13, providing a stable movement trajectory and support for the mounting base 2, ensuring that the mounting base 2 can be accurately aligned with the preset installation position of the frame 1, and avoiding the inability of the limiting block 62 and the limiting groove 5 to be accurately engaged due to alignment deviation, or the gap between the mounting base 2 and the frame 1 affecting the screening stability.
[0023] refer to Figure 1 A base 14 is provided at the bottom of the frame 1. Fixed seats 15 are fixedly connected to the front and back of the frame 1 and the front and back of the base 14, respectively. A support spring 16 is detachably connected between the two fixed seats 15. By setting up the base 14, fixed seats 15, and support spring 16, the support spring 16, being elastic, effectively absorbs and buffers vibration energy when the frame 1 vibrates under the action of the vibrator 17, reducing the impact of vibration on the equipment base 14 and surrounding facilities, lowering the noise during equipment operation, and preventing equipment parts from loosening or being damaged due to severe vibration. The elastic support of the support spring 16 ensures that the frame 1 remains stable during vibration. It can maintain a stable vibration amplitude and frequency, ensuring the screening effect of the screening mesh 3 on corn raw materials, allowing the raw materials to move fully on the screen surface, improving screening efficiency and accuracy. The support spring 16 adopts a detachable connection method. When the spring is fatigued or damaged, it can be quickly disassembled and replaced with a new spring. The operation is simple, reducing the maintenance difficulty and cost of the equipment. The base 14 provides a stable support foundation for the frame 1. The cooperation between the fixed seat 15 and the support spring 16 further enhances the connection stability between the frame 1 and the base 14, so that the entire screening mechanism maintains the structural reliability during operation and avoids the equipment tilting or shifting due to vibration.
[0024] refer to Figure 2 The bottom of the hopper 7 is equipped with a guide seat 19, and a handle 20 is fixedly connected to one side of the mounting base 2. By setting the guide seat 19 and the handle 20, the corn raw material received by the hopper 7 can be gathered and directionally transported to the designated area of the screening screen 3 through the guide seat 19 and its converging structure. The handle 20 provides a clear force point for pulling the mounting base 2.
[0025] Brief description of the usage process: When it is necessary to adjust the screening particle size, rotate the bidirectional threaded rod 61 to drive the limiting block 62 out of the limiting groove 5, thereby releasing the lock on the mounting base 2. By holding the pull handle 20, pull the mounting base 2 out of the frame 1 along the guide of the sliding block 12 and the sliding groove 13. After replacing the screening screen 3 with the corresponding mesh size, reset the mounting base 2 and rotate the bidirectional threaded rod 61 in the opposite direction to make the limiting block 62 re-lock into the limiting groove 5 to complete the fixation. The screening operation can then continue.
[0026] Example 2: refer to Figure 1 and Figure 2A raw material screening mechanism for corn flour processing includes a frame 1, with a mounting base 2 inserted into one end of the frame 1. A screening mesh 3 is installed inside the mounting base 2. The frame 1 has symmetrically arranged mounting grooves 4 inside, and symmetrically arranged limiting grooves 5 on the surface of the mounting base 2. A limiting mechanism 6 is provided between the two mounting grooves 4. A hopper 7 is provided on the top of the frame 1. A sliding cavity 8 is installed on one side of the hopper 7. A material blocking plate 9 is slidably engaged inside the sliding cavity 8. A support base 10 is fixedly connected to one side of the hopper 7. An adjusting bolt 11, which is rotatably connected to the material blocking plate 9, is threaded onto the top of the support base 10. By installing the sliding cavity 8 on the hopper 7, the height of the material blocking plate 9 can be adjusted when the adjusting bolt 11 is rotated. This allows the material blocking plate 9 to block the stacked material falling from inside the hopper 7, ensuring that the material is within the thickness of the screening mesh 3 during the screening process, preventing stacking and ensuring the screening effect.
[0027] refer to Figure 1 Vibrators 17 are mounted on both the front and back of the frame 1. Support plates 18, which are fixedly connected to the frame 1, are fixedly connected to the front and back of the hopper 7. By setting up vibrators 17 and support plates 18, vibrators 17 drive the frame 1 and the mounting base 2 and screening screen 3 inside the frame 1 to vibrate synchronously through high-frequency vibration, causing the corn raw materials on the screen surface to jump and slide. Grading and screening are achieved by utilizing the difference in particle size. The symmetrical mounting on the front and back of the frame 1 can ensure the balanced transmission of vibration force, avoid the vibration deviation caused by the force on one side of the frame 1, and improve screening efficiency and stability. The hopper 7 is a key component for raw material feeding. The support plate 18 rigidly fixes it to the frame 1, which can offset the shaking of the hopper 7 caused by the impact and vibration of the material when the vibrator 17 is working, and prevent the hopper 7 from shifting or loosening. At the same time, it provides stable support for the hopper 7, avoiding the spillage of raw materials or uneven feeding due to the instability of the hopper 7 during the feeding process, and ensuring the continuity of screening.
[0028] Brief description of the operation: Corn raw materials enter the equipment through the hopper 7, are gathered and directionally conveyed to the surface of the screen 3 by the bottom guide seat 19, and the material spreading plate 9 can be driven to slide in the sliding cavity 8 by rotating the adjusting bolt 11 on the support seat 10, adjusting the gap between it and the screen surface, thereby controlling the distribution width of the raw materials on the screen surface, avoiding local accumulation, and ensuring that the raw materials are evenly spread. By installing an external controller, the external controller controls the vibrators 17 on the front and back of the frame 1 to start. The vibration force is transmitted through the frame 1 to the mounting seat 2 and the internal screen 3, causing the screen surface to vibrate at high frequency. Under the action of vibration, the corn raw materials jump and slide along the screen surface. Among them, qualified particles with a particle size smaller than the screen hole fall through the screen, while impurities or unqualified particles with a larger particle size move along the screen surface and are discharged from the end, realizing the grading and screening of raw materials.
[0029] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.
[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A raw material screening mechanism for corn flour processing, comprising a frame (1), characterized in that: One end of the frame (1) is connected to a mounting base (2), and a screening screen (3) is installed inside the mounting base (2). The frame (1) is symmetrically provided with mounting grooves (4), and the surface of the mounting base (2) is symmetrically provided with limiting grooves (5). A limiting mechanism (6) is provided between the two mounting grooves (4). A hopper (7) is provided on the top of the frame (1). A sliding cavity (8) is provided on one side of the hopper (7). A material blocking plate (9) is slidably engaged inside the sliding cavity (8). A support base (10) is fixedly connected to one side of the hopper (7). An adjusting bolt (11) that is rotatably connected to the material blocking plate (9) is threaded to the top of the support base (10).
2. The raw material screening mechanism for corn flour processing according to claim 1, characterized in that: The limiting mechanism (6) includes a bidirectional threaded rod (61) rotatably connected between two mounting slots (4), and a limiting block (62) threadedly connected to the bidirectional threaded rod (61) is slidably connected inside the mounting slot (4), and the limiting block (62) and the limiting slot (5) are engaged.
3. The raw material screening mechanism for corn flour processing according to claim 1, characterized in that: The mounting base (2) is symmetrically fitted with sliding blocks (12), and the frame (1) has a sliding groove (13) that is slidably connected to the sliding blocks (12).
4. The raw material screening mechanism for corn flour processing according to claim 1, characterized in that: The bottom of the frame (1) is provided with a base (14), and the front and back of the frame (1) are fixedly connected to the front and back of the base (14) with fixed seats (15), and a support spring (16) is detachably connected between the two fixed seats (15).
5. The raw material screening mechanism for corn flour processing according to claim 1, characterized in that: The front and back of the frame (1) are equipped with vibrators (17), and the front and back of the hopper (7) are fixedly connected with support plates (18) that are fixed to the frame (1).
6. The raw material screening mechanism for corn flour processing according to claim 1, characterized in that: The bottom of the hopper (7) is equipped with a guide seat (19), and a handle (20) is fixedly connected to one side of the mounting base (2).