Multi-stage screening machine for curing agent powder
By designing a multi-stage sieving machine for curing agent powder with a pull-out sieve plate and a sliding material rack, the problem of existing equipment being unable to flexibly adjust the sieve grading was solved, achieving efficient and accurate powder grading and meeting the controllability and adjustability requirements of the laboratory.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI TONGTAI NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-24
AI Technical Summary
Existing laboratory curing agent powder sieving equipment cannot flexibly adjust the sieving layers, resulting in cumbersome operation, inaccurate grading, and easy powder accumulation and back mixing, which cannot meet the needs of dynamic monitoring and process verification.
A multi-stage sieving machine for curing agent powder was designed, which adopts a pull-out screen plate, a sliding material rack and a limiting structure, combined with a closed material guiding channel and a sealed material collection design, to achieve flexible configuration of sieving grades and efficient grading.
It enables flexible configuration of sieve grades, reduces powder spillage, optimizes material flow, improves the accuracy and efficiency of grading, and meets the controllability and adjustability requirements in laboratory environments.
Smart Images
Figure CN224157268U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of curing agent powder processing technology, specifically a multi-stage sieving machine for curing agent powder. Background Technology
[0002] In laboratory sieving tests of curing agent powders, the flexible configuration of multi-stage sieve layers is a key requirement for achieving dynamic monitoring and process verification. Traditional laboratory sieving equipment typically adopts a fixed-stage structure, which has the following prominent problems:
[0003] Existing equipment often fixes the screen and the receiving container in a single vertical sequence, and the receiving point is predetermined by the equipment structure. For example, when it is necessary to adjust the screening process from three stages to two stages, the bottom screen assembly must be disassembled and the receiving container reinstalled, which is cumbersome and easily disrupts the screening continuity.
[0004] Because the screen and the receiving container are rigidly connected, it is not possible to temporarily insert or remove the receiving device of a specific level during the screening process. If it is necessary to sample and analyze the mixture in the middle layer (such as between screen one and screen two), the screening process must be interrupted and the material must be manually separated, which will lead to distorted test results.
[0005] The fixed-layer design makes it impossible to adjust the spacing between adjacent screens according to the characteristics of the powder, which can easily cause fine powder to accumulate or even mix in the narrow space, affecting the accuracy of grading.
[0006] Therefore, a multi-stage sieving device with dynamic reconfigurable sieving layers is needed. This device can achieve rapid switching between primary, secondary, and tertiary sieving modes through the modular layout of the receiving components, thus meeting the controllability and adjustability requirements of the sieving process in a laboratory environment. Utility Model Content
[0007] The purpose of this invention is to provide a multi-stage screening machine for curing agent powder to solve the problem mentioned in the background art that it is impossible to flexibly adjust according to the characteristics of raw materials or production needs.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage sieving machine for curing agent powder, comprising:
[0009] The frame is a vertical shell structure, with vertically distributed guide troughs and receiving troughs on both sides;
[0010] The feed trough is equipped with a pull-out screen plate, and the receiving trough is equipped with a sliding material rack.
[0011] The guide trough and the receiving trough are provided with symmetrically distributed guide rails, and the material rack is provided with sliding grooves on both sides that slide with the guide rails.
[0012] The end of the guide trough is provided with a retractable limiting post, which is vertically inserted into the inner wall of the guide trough.
[0013] One end of the sieve plate is connected to a downwardly inclined guide plate, and the guide plate and the sieve plate form a continuous material guiding channel.
[0014] Using the above technical solution, vertically distributed guide troughs and receiving troughs are respectively set on both sides of the vertical frame. A pull-out screen plate in the guide trough is used for grading and screening, while a sliding material rack in the receiving trough is used to collect powders of different particle sizes. Guide rails symmetrically connect the guide troughs and receiving troughs, and the material rack is slidably positioned via a sliding groove. Limiting posts are used to fix the position of the screen plate, and the guide plate and screen plate form a continuous material channel to ensure smooth powder flow.
[0015] As a preferred technical solution of this utility model, the inclination angle of the screen plate is consistent with the inclination angle of the guide chute, and the length of the guide plate decreases step by step along the material travel direction.
[0016] Using the above technical solution, the inclination angles of the sieve plate and the guide chute are consistent, ensuring that the material slides down naturally under the action of gravity. The design of the guide plate with gradually decreasing length avoids material accumulation or cross-contamination caused by excessively long multi-level guide plates, ensuring that the powder after each screening falls independently.
[0017] As a preferred technical solution of this utility model, the guide plate is provided with upwardly extending protective baffles on both sides, which form a closed material guiding channel with the side wall of the screen plate.
[0018] By adopting the above technical solution, the protective guards on both sides of the guide plate and the side wall of the screen plate form a closed channel to prevent the powder from escaping from the side, reduce material waste, and at the same time ensure that the powder is concentrated and enters the next stage of screening or collection.
[0019] As a preferred technical solution of this utility model, the material rack is embedded with a detachable material receiving basin, and the top of the material receiving basin is provided with an outwardly extending support flange.
[0020] Using the above technical solution, the material rack has a removable receiving basin embedded within it, and the top support flange facilitates quick installation and positioning of the receiving basin. This design simplifies the powder collection process and allows users to replace or clean the receiving container according to different particle size requirements.
[0021] As a preferred technical solution of this utility model, the end of the material rack near the receiving trough is provided with a baffle, which forms a sealing structure when it contacts the outer wall of the receiving trough.
[0022] By adopting the above technical solution, the baffle at the end of the material rack forms a sealing structure when it contacts the outer wall of the receiving trough, preventing the powder from leaking from the gap between the receiving trough and the material rack during the screening process, and ensuring the airtightness of the sorting environment.
[0023] As a preferred technical solution of this utility model, a traction member is provided on the outer side of the baffle, which is a force-applying mechanism connected to the baffle.
[0024] By adopting the above technical solution, the traction component (such as a handle or pull rod) on the outside of the baffle provides a force application point, which facilitates the opening and closing of the baffle by manual or mechanical operation, realizes the pulling action of the material rack, and improves the ease of operation of the equipment.
[0025] As a preferred technical solution of this utility model, the feed trough is provided with multiple sieve plates from top to bottom, and the mesh size of adjacent sieve plates is arranged in a progressively decreasing manner.
[0026] Using the above technical solution, multiple sieve plates are arranged from top to bottom in the feed chute, with the sieve mesh size decreasing progressively, to achieve continuous grading of powder from coarse to fine. Each sieve plate corresponds to a different particle size range, meeting the needs of multi-particle size sorting.
[0027] As a preferred technical solution of this utility model, the guide rail is symmetrically arranged along the connection between the guide trough and the receiving trough and forms a sliding track inclined to the horizontal plane.
[0028] Using the above technical solution, the guide rails are inclinedly distributed between the feed trough and the receiving trough, forming a sliding track inclined to the horizontal plane. The gravity assists the sliding positioning of the feeding frame, ensuring that the receiving container stably receives the powder after screening.
[0029] As a preferred technical solution of this utility model, the limiting post is set at the connection between the sieve plate and the guide plate, and the telescopic end of the limiting post can abut against the bottom surface of the sieve plate.
[0030] Using the above technical solution, the limiting post is set at the connection between the screen plate and the guide plate. It abuts against the bottom surface of the screen plate through the telescopic end to lock the position of the screen plate and prevent it from being displaced due to vibration or material impact, thus ensuring screening accuracy.
[0031] As a preferred technical solution of this utility model, the top and bottom of the frame are respectively provided with vibration motors, and the guide trough and the receiving trough are vertically distributed in opposite directions.
[0032] Using the above technical solution, the vibrating motors at the top and bottom of the frame provide vibration force, promoting uniform distribution of powder on the screen plate and efficient screening. The opposing inclined structures of the guide chute and the receiving chute create a material flow gradient, enhancing screening efficiency.
[0033] Compared with existing technologies, the beneficial effects of this utility model multi-stage sieving machine for curing agent powder are:
[0034] A modular and adjustable multi-stage screening machine was jointly developed. Through the pull-out screen plate, sliding material rack and limiting structure, the number of screening grades can be flexibly configured. The closed material guide channel and sealed material collection design reduce powder spillage. The vibration and tilting layout optimizes material flow, ultimately achieving efficient and accurate classification of curing agent powder. Attached Figure Description
[0035] Figure 1 This is a schematic diagram of the dual-stage sieve assembly structure of this utility model;
[0036] Figure 2 This is a schematic diagram of the three-stage sieve assembly structure of this utility model;
[0037] Figure 3 This is a schematic diagram of the four-stage sieve assembly structure of this utility model;
[0038] Figure 4 This is a schematic diagram of the overall internal cross-sectional structure of this utility model;
[0039] Figure 5 This is a schematic diagram of the overall three-dimensional structure of this utility model.
[0040] In the diagram: 1. Frame; 2. Feeding bin; 3. Guide chute; 4. Receiving chute; 5. Placing rack; 6. Baffle; 7. Traction component; 8. Guide rail; 9. Receiving basin; 10. Screen plate; 11. Guide plate; 12. Slide chute; 13. Limiting post. Detailed Implementation
[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0042] Please see Figure 1-5 This utility model provides a technical solution: a multi-stage sieving machine for curing agent powder, comprising:
[0043] The frame 1 is a vertical shell with an internal hollow structure. Vibration motors are installed at the top and bottom ends of the frame 1. Depending on its length, the frame 1 requires additional diagonal bracing on its sides. This diagonal bracing is located at the side ends of the guide trough 3 and the guide trough 4, and their positions are symmetrical. The guide trough 3 is pre-installed at one end of the frame 1, while the receiving trough 4 is pre-installed at the other end. Several guide troughs 3 and receiving troughs 4 are vertically distributed and inclined. The screen plates 10 inside the guide trough 3 have the same inclination angle, and the material racks 5 inside the receiving trough 4 have the same inclination angle, with their inclination angles relative to one end of the screen plate 10. The screen plate 10 is inclined downwards at an angle of not less than 5 degrees. A guide plate 11 is integrally formed at one end of the screen plate 10. The length of the guide plate 11 gradually decreases from top to bottom to prevent the powder conveyed by the guide plate 11 from vertically overlapping and hindering discharge. Protective plates of not less than 5 cm are provided on both sides of the guide plate 11 to prevent powder from falling from the sides. The mesh size inside the screen plate 10 gradually decreases from the top downwards to ensure that the particle size of the powder screened decreases as it descends. The distribution direction of the receiving trough 4 is opposite to that of the guiding trough 3, but the inclination angle is the same, and they are in the same group. The height of the receiving trough 4 should be lower than that of the guiding trough 3, but the height of the receiving trough 4 should be greater than that of the guiding trough 3. The receiving trough 4 needs to accommodate the material placement rack 5 and the receiving basin 9. The receiving basin 9 is a hollow basin structure with a bottom plate. The outer edge of the top of the receiving basin 9 protrudes outward, and the size of this protrusion is larger than the inner edge size of the material placement rack 5, so that the receiving basin 9 can be supported inside the material placement rack 5. The receiving basin 9 can collect the powder at the current position. One end of the material placement rack 5 is also equipped with a baffle 6. When the material placement rack 5 is installed in place, the baffle 6 fits against the outer wall of the receiving trough 4 to prevent powder from flowing out. The material receiving trough 4 overflows. Two guide rails 8 are symmetrically arranged between each set of guide troughs 3 and the material receiving trough 4. Two sliding grooves 12 are also provided at both ends of the material placing frame 5 for sliding engagement with the guide rails 8. The baffle 6 is also equipped with a traction component 7, which includes a handle, lifting ring, or clamp, one end of which is connected to the baffle 6 and has a hollow internal structure, facilitating the application of force to pull the material placing frame 5 out of the material receiving trough 4. The multi-stage screening of this equipment has an adjustable function, allowing selection of the corresponding number of material placing frames 5, sieve plates 10, and receiving basins 9 according to the actual required screening particle size. (See reference...) Figure 1 The top-level material rack 5 and the material rack 5 being pulled out form a two-stage screening system, see reference. Figure 2 Two sets of material racks 5 are removed to form a three-stage screening process. (See reference) Figure 3The three sets of material racks 5 are pulled out to form a four-stage screening. If the top material rack 5 and the receiving basin 9 are not pulled out from the receiving trough 4, a single-stage screening is formed. The method of easy disassembly and assembly also facilitates the replacement of parts and the cleaning of the screen and the inside and surface of the receiving basin 9. A vertically retractable limiting post 13 is set inside the guide trough 3. The limiting post 13 is connected to the inside of the guide trough 3 by a movable plug-in method. The limiting post 13 can block and limit the angle position of the connection end of the screen plate 10 and the guide plate 11, so as to prevent the screen plate 10 and the guide plate 11 from sliding out of the guide trough 3 due to the tilt of the installation angle.
[0044] Push the bottom material rack 5 completely into the receiving trough 4 so that the receiving basin 9 can receive the ultrafine powder that has passed through all the sieve plates, forming a single-stage screening mode.
[0045] Pull out the middle layer material rack 5 to lock it in the middle of the guide rail 8, so that the receiving basin 9 is located below the second layer screen plate 10b. At this time, the system automatically forms a two-stage screening structure.
[0046] Continue to pull the upper material rack 5 to the outlet end of the guide chute 3 to form a three-stage screening channel.
[0047] If an intermediate receiving point needs to be added temporarily during the three-stage screening process, simply slide the spare material rack 5 along the guide rail 8 into the preset slot, and its receiving basin 9 can capture the mixed material of the specified level.
[0048] The position of the screen plate 10 can be quickly locked or released by the extension and retraction control of the limiting post 13. When the limiting post 13 is rotated out, the corresponding screen plate 10 can be pulled out laterally along the guide chute 3, directly changing the material flow direction.
[0049] When taking samples midway, pull the traction component 7 of the target material rack 5 outward, and the baffle 6 will disengage from the sealing surface of the receiving trough 4.
[0050] As the material rack 5 slides out along the inclined guide rail 8, the protective guard continuously wraps around the edge of the receiving basin 9 to ensure that no powder escapes.
[0051] After sampling is completed, push the material rack 5 back to its original position, and the baffle 6 and the outer wall of the receiving trough 4 re-seal each other, and the screening process continues.
[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is limited by the appended claims and their equivalents.
Claims
1. A multi-stage sieving machine for curing agent powder, characterized in that, include: The frame (1) is a vertical shell structure, with vertically distributed guide troughs (3) and receiving troughs (4) on its two sides respectively. The feed trough (3) is equipped with a pull-out screen plate (10), and the receiving trough (4) is equipped with a sliding material rack (5). The guide trough (3) and the receiving trough (4) are provided with symmetrically distributed guide rails (8), and the material rack (5) is provided with sliding grooves (12) on both sides that slide in cooperation with the guide rails (8). The end of the guide trough (3) is provided with a retractable limiting post (13), which is vertically inserted into the inner wall of the guide trough (3); One end of the sieve plate (10) is connected to a downwardly inclined guide plate (11), and the guide plate (11) and the sieve plate (10) form a continuous material guiding channel.
2. The multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The tilt angle of the sieve plate (10) is consistent with the tilt angle of the guide trough (3), and the length of the guide plate (11) decreases step by step along the material travel direction.
3. The multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The guide plate (11) has protective guards extending upward on both sides, which together with the side wall of the screen plate (10) form a closed material guiding channel.
4. The multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The material rack (5) is embedded with a detachable receiving basin (9), and the top of the receiving basin (9) is provided with an outwardly extending support flange.
5. The multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The end of the material rack (5) near the receiving trough (4) is provided with a baffle (6), which forms a sealing structure when it contacts the outer wall of the receiving trough (4).
6. The multi-stage sieving machine for curing agent powder according to claim 5, characterized in that: The baffle (6) is provided with a traction member (7) on the outside, which is a force-applying mechanism connected to the baffle (6).
7. The multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The feed trough (3) is provided with multiple sieve plates (10) arranged from top to bottom, and the mesh size of adjacent sieve plates (10) is arranged in a progressively decreasing manner.
8. The multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The guide rail (8) is symmetrically arranged along the connection between the guide groove (3) and the receiving groove (4) and forms a sliding track inclined to the horizontal plane.
9. A multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The limiting post (13) is set at the connection between the sieve plate (10) and the guide plate (11), and the telescopic end of the limiting post (13) can abut against the bottom surface of the sieve plate (10).
10. A multi-stage sieving machine for curing agent powder according to claim 1, characterized in that: The frame (1) is equipped with vibration motors at the top and bottom respectively, and the guide trough (3) and the receiving trough (4) are vertically distributed in opposite directions.