A sieve plate

Abstract

The utility model discloses a sieve plate, including reinforcing rib, spacing ring, support net rack and screening surface, wherein, the support net rack is arranged to the outside of spacing ring, the reinforcing rib is welded to form the preset shape, divides the inside of spacing ring into a plurality of screening surfaces, and each screening surface is distributed with sieve hole, and the reinforcing rib is integrally casted with spacing ring and support net rack, thereby the utility model can realize the technical effect of product pollution -free, need not human intervention, prolongs the service life of sieve plate.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a sieve plate. Background Technology

[0002] The granular silicon particles produced by the silane fluidized bed method are not uniform in size and need to be further screened. Based on the particle size distribution, sieves of different mesh sizes are selected for multi-layer screening to diversify product specifications and meet the needs of downstream industries.

[0003] In the process of realizing this utility model, it was found that existing screen plate technologies are diverse and have not achieved integrated molding. Traditional screening devices often use split screen plates, which have problems such as complex manufacturing, easy damage, easy contamination, and cumbersome installation, making it difficult to meet the high-precision screening requirements of particles such as silicon. Utility Model Content

[0004] In view of this, the present invention provides an integrated molded screen plate, which can solve the technical problems of frequent wire breakage of nylon screens, exposed metal of the screen frame, and the need for regular manual inspection, thereby achieving the technical effect of no product pollution, no need for human intervention, and extended service life of the screen plate.

[0005] To achieve the above objectives, a sieve plate is provided according to an embodiment of the present invention, comprising: reinforcing ribs, a limiting ring, a supporting mesh frame, and a screening surface; wherein, a supporting mesh frame is provided on the outer side of the limiting ring; the reinforcing ribs are welded to form a preset shape, dividing the inner side of the limiting ring into several screening surfaces, and each screening surface is provided with sieve holes; the reinforcing ribs are integrally cast with the limiting ring and the supporting mesh frame.

[0006] Optionally, this includes a main beam being struck: wherein the main beam being struck is wrapped with reinforcing ribs and is integrally cast with the limiting ring and the supporting grid.

[0007] Optionally, it includes: welding reinforcing ribs to form a cross shape, dividing the inner side of the limiting ring into four screening surfaces.

[0008] Optionally, it includes: an outer sealing ring for the edge of the supporting space frame.

[0009] Optionally, it includes: multiple longitudinal and transverse reinforcing ribs are evenly distributed on each screening surface, and the longitudinal and transverse reinforcing ribs gradually shorten from the center of the screen plate; the longitudinal reinforcing ribs are divided into multiple longitudinal segments by the transverse reinforcing ribs, and the transverse reinforcing ribs are divided into multiple transverse segments by the longitudinal reinforcing ribs; the length of the longitudinal segment is equal to the length of the transverse segment, and adjacent longitudinal and transverse segments are perpendicular to each other to form multiple screen holes of the same size, and the screen holes and the screening surface are on the same horizontal plane.

[0010] Optionally, it includes an ultrasonic generator, a transducer, and a sieve plate substrate; wherein, the ultrasonic generator outputs a high-frequency electrical signal to the transducer; the transducer converts the high-frequency electrical signal into mechanical vibration; and the sieve plate substrate is connected to the transducer and disposed at the lower end of the sieve plate for transmitting mechanical vibration to each screening surface.

[0011] Optionally, this includes: coating the outer layer of the reinforcing ribs, limiting rings, and supporting grid frame with polymer material, which is integrally cast and formed by secondary casting.

[0012] Optionally, this includes spraying a composite coating onto the surface of the sieve plate.

[0013] Optionally, this includes machining rounded chamfers at the edges of the sieve holes.

[0014] In addition, to achieve the above objectives, a multi-layer sieve plate is provided according to an embodiment of the present invention, comprising a combination of multiple sieve plates described in the above embodiments.

[0015] One embodiment of the above-mentioned utility model has the following advantages or beneficial effects: The utility model provides an integrated molded screen plate, which significantly improves screening accuracy and reliability by accurately positioning the screen hole size. At the same time, it has no seams or weak connection points, thereby enhancing structural durability and fatigue resistance. Furthermore, it has no easily damaged connecting parts and does not require frequent disassembly, further reducing equipment maintenance costs and downtime losses.

[0016] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0017] The accompanying drawings are provided to better understand this utility model and do not constitute an undue limitation thereof. Wherein:

[0018] Figure 1 This is a schematic diagram of the sieve plate according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the sieve hole structure according to an embodiment of the present utility model. Detailed Implementation

[0020] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0021] At least one embodiment of this utility model provides a sieve plate, such as Figure 1 , 2 The sieve plate may include reinforcing ribs 1, limiting rings 3, supporting mesh frames 4, and screening surfaces 5. In an embodiment, the supporting mesh frame 4 is provided on the outer side of the limiting ring 3, the reinforcing ribs 1 are welded to form a preset shape, dividing the inner side of the limiting ring 3 into several screening surfaces 5, and each screening surface 5 is provided with sieve holes 10. The reinforcing ribs 1 are integrally cast with the limiting ring 3 and the supporting mesh frame 4.

[0022] As can be seen, the hole shape (such as round, square, strip) and arrangement of the integrated design of this utility model can be customized according to the particle size, ensuring that the particles are evenly distributed when passing through, reducing clogging, and achieving efficient screening and grading; and the integrated molding of this utility model avoids the defects of welding and splicing, can withstand high load impact of materials, and improves structural strength and durability.

[0023] In some preferred embodiments, the seamless integral molding process of the sieve plate described in this utility model adopts one-time injection molding, stamping or 3D printing molding technology, which completely eliminates the welding, bolt connection and other joint structures of traditional sieve plates. The sieve plate base, reinforcing ribs and sieve holes are formed simultaneously through high-precision molds, avoiding problems such as material leakage and stress concentration caused by splicing gaps.

[0024] In addition, the reinforcing ribs integrally formed and interspersed inside the sieve plate described in this utility model, such as the pre-selected shapes of "I", honeycomb or arc ribs, etc., are optimized by the built-in reinforcement structure design, thereby improving the bending strength.

[0025] In a preferred embodiment, a sealing ring is fitted around the edge of the support frame 4. Example: A V-shaped sealing ring is fitted around the edge of the support frame 4. Thus, the silicone V-shaped sealing ring, with its edge design matching the vibrating screen equipment, prevents direct contact between the metal screen frame and the screen plate, enhancing the seal. The combination of quick installation and soft sealing technology, along with the use of connection methods such as "T-slots," improves efficiency by 80% compared to traditional snap-fit ​​connections.

[0026] It should be noted that, in order to reduce clogging and adhesion, the integrated screen plate has smooth hole walls with bevels (such as conical holes), which can reduce material adhesion and achieve self-cleaning.

[0027] It is also worth noting that the outer layer of the metal skeleton of the sieve plate described in this invention is coated with polymer materials such as polyurethane and nylon, achieving a combination of rigidity and flexibility through secondary casting molding, and employing composite material synergistic molding technology, which ensures both structural strength and improved wear resistance. Of course, this invention can also spray a composite coating onto the surface of the sieve plate to achieve a gradient change in material properties.

[0028] For high-purity solid particles, we have achieved innovation in environmentally adaptable materials, namely, using polytetrafluoroethylene (PTFE) or high-purity polyurethane materials, and achieving one-piece molding through injection molding, with a protective coating sprayed onto the mold, which can improve the surface cleanliness of the sieve plate.

[0029] As other embodiments of this utility model, such as Figure 1 The sieve plate of this utility model further includes a striking main beam 2. In an embodiment, the striking main beam 2 is wrapped with reinforcing ribs 1 and is integrally cast with the limiting ring 3 and the supporting grid frame 4.

[0030] It can be seen that the impact beam 2, wrapped with reinforcing rib 1, increases the width of the core area of ​​the screen plate, reducing the risk of local overload. Especially for materials with uneven particle size, it can reduce screening deviation caused by uneven distribution. Furthermore, the impact beam 2, the limiting ring 3, and the supporting mesh frame 4 are integrally cast. The limiting ring 3 plays a positioning role between the screening surface 5 and the supporting mesh frame 4, realizing an integrated anti-clogging design.

[0031] As a further embodiment of this utility model, the reinforcing ribs 1 are welded to form a cross shape, dividing the inner side of the limiting ring 3 into four screening surfaces 5. The reinforcing ribs 1 are welded together at the overlapping position in the cross shape, and the width of the main beam 2 is hit to divide the screen plate into four screening surfaces 5.

[0032] There are also some embodiments of this utility model, such as Figure 2 The screening surface 5 is uniformly distributed with multiple longitudinal reinforcing ribs 11 and transverse reinforcing ribs 12. The longitudinal reinforcing ribs 11 and transverse reinforcing ribs 12 are gradually shortened from the center of the screen plate. The longitudinal reinforcing ribs 11 are divided into multiple longitudinal segments L1 by the transverse reinforcing ribs 12, and the transverse reinforcing ribs 12 are divided into multiple transverse segments L2 by the longitudinal reinforcing ribs 11. The length of the longitudinal segment L1 is equal to the length of the transverse segment L2. Adjacent longitudinal segments L1 and transverse segments L2 are perpendicular to each other to form multiple screen holes 10 of the same size. The screen holes 10 are on the same horizontal plane as the screening surface 5 and perpendicular to the direction of material movement.

[0033] In a preferred embodiment, the parameters of the sieve aperture 10 are precisely controlled, so that the size accuracy of the sieve aperture 10 is controlled within ±0.05mm and the shape consistency deviation is <1%, which is significantly better than the traditional cutting and splicing process.

[0034] In another preferred embodiment, a rounded chamfer is machined at the edge of the sieve hole 10 to achieve surface functionalization treatment technology, reduce the contact angle between the material and the sieve plate, and achieve a self-cleaning effect.

[0035] In some embodiments of this utility model, an ultrasonic generator, a transducer, and a sieve plate substrate are included. The ultrasonic generator and the transducer are connected to the sieve plate substrate. In this embodiment, the ultrasonic generator outputs a high-frequency electrical signal to the transducer, which converts the high-frequency electrical signal into mechanical vibration and transmits the mechanical vibration to each screening surface 5. The sieve plate substrate is disposed at the lower end of the sieve plate. In a preferred embodiment, the sieve plate substrate and the sieve plate are connected by an embedded slot.

[0036] Example: The ultrasonic generator outputs a high-frequency electrical signal, which is converted into a 20-40KHz mechanical vibration by the transducer. This vibration is transmitted to the entire screening surface 5 through the screen plate substrate. The high-frequency micro-amplitude vibration generated on the screening surface 5 forms a composite vibration with the low-frequency vibration of the screening equipment, thus solving the problems of particle blockage, low screening efficiency, and insufficient accuracy in the traditional combined screen plate screening process.

[0037] It is worth noting that this utility model also provides a multi-layer sieve plate combination structure, wherein each sieve plate is an integrally molded sieve plate (i.e., the sieve plate described in the above embodiments). The vibrating screen frame positions the limiting ring 3 while the support frame 4 is locked. The particles fall into the screening chamber of the screening surface 5 by gravity, first colliding with and hitting the main beam 2. The particles rebound and accumulate flat on the screening surface 5. The rotational force of the motor is transmitted to the sieve plate, causing the particles to move outward involutely on the screening surface 5 and the main beam 2. During the screening process, particles larger than the sieve hole 10 are intercepted by the sieve plate and discharged through the external discharge port. Particles smaller than the sieve hole 10 pass through the sieve hole 10 and fall to the second-level sieve plate. The multi-layer sieve plate combination screening achieves the separation and grading of particles of different sizes. Example: The multi-layer sieve plate of this utility model includes at least two sieve plates described in the above embodiments, and the sieve plates are arranged in longitudinal layers. The number of layers and the number of sieve plates are not limited here.

[0038] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sieve plate, characterized in that, include: Reinforcing ribs, limiting rings, supporting mesh frame, and screening surface; among them, A supporting grid is installed on the outer side of the limiting ring; The reinforcing ribs are welded to form a preset shape, dividing the inner side of the limiting ring into several screening surfaces, and each screening surface is distributed with screen holes; The reinforcing ribs, limiting rings, and supporting grid are cast as a single unit.

2. The sieve plate according to claim 1, characterized in that, Including hitting the main beam: Among them, the main beam is wrapped with reinforcing ribs and is cast in one piece with the limiting ring and the supporting grid.

3. The sieve plate according to claim 1, characterized in that, include: The reinforcing ribs are welded to form a cross shape, dividing the inner side of the limiting ring into four screening surfaces.

4. The sieve plate according to claim 1, characterized in that, include: The edges of the supporting space frame are fitted with sealing rings.

5. The sieve plate according to claim 1, characterized in that, include: Multiple longitudinal and transverse reinforcing ribs are evenly distributed on each screening surface, and the lengths of the longitudinal and transverse reinforcing ribs that are offset from the center of the screen plate gradually become shorter. The longitudinal reinforcing ribs are divided into multiple longitudinal segments by the transverse reinforcing ribs, and the transverse reinforcing ribs are divided into multiple transverse segments by the longitudinal reinforcing ribs; the length of the longitudinal segment is equal to the length of the transverse segment, and adjacent longitudinal segments and transverse segments are perpendicular to each other to form multiple sieve holes of the same size, and the sieve holes and the screening surface are on the same horizontal plane.

6. The sieve plate according to claim 1, characterized in that, Includes an ultrasonic generator, transducer, and sieve plate substrate; among which An ultrasonic generator outputs a high-frequency electrical signal to a transducer. A transducer converts high-frequency electrical signals into mechanical vibrations; The sieve plate base is connected to the transducer and is located at the lower end of the sieve plate to transmit mechanical vibration to each screening surface.

7. The sieve plate according to claim 1, characterized in that, include: The outer layer of the reinforcing ribs, limiting rings, and supporting grid is coated with polymer material and formed by secondary casting.

8. The sieve plate according to claim 1, characterized in that, include: A composite coating is sprayed onto the surface of the sieve plate.

9. The sieve plate according to claim 1, characterized in that, include: Rounded chamfers are machined at the edges of the sieve holes.

10. A multi-layer sieve plate, characterized in that, include: The sieve plates are generated by combining any of the claims 1-9.

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