Screening plate and screening mechanism
By setting up longitudinally connected screen holes and high hardness isolation plates on the screen plate, the problem of easy clogging of screen holes is solved, the smooth screening of materials and long-term use of equipment is achieved, and the jamming and cleaning costs are reduced.
Patent Information
- Application Number
- CN202420326014.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-02-21
AI Technical Summary
Existing screen holes are prone to clogging, resulting in material jamming and high cleaning costs, and large-sized thin materials are screened to cause product degradation.
A screen plate is designed, and a plurality of longitudinally extending screen holes are provided on the main body plate, including a first and a second section in longitudinal communication, the first section is located above the second section, and the isolation plate with a harder hardness is higher than that of the main body plate is placed on In the groove, avoid holes and communication holes are formed to prevent sharp corners of the material from entering and achieving smooth passage of the material.
It effectively avoids clogging of screen holes, reduces material jamming and cleaning costs, improves screening quality, and extends the service life of the equipment.
Smart Images
Figure CN222197838U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical screening, in particular to a screening plate and a screening mechanism. Background Art
[0002] In the brittle block material processing industry, downstream customers have certain requirements for the size and weight of upstream raw materials. Materials with too large or too small size or weight will directly reduce the quality of downstream products. During the transportation and transfer of materials, there are collisions between materials or between materials and containers. The collision will produce fragments and powders with too small size or weight. For this purpose, screening equipment and conveying screening equipment are often used. The length direction of the screen hole of the equipment currently used is usually perpendicular to the conveying direction. The material will be blocked in the screen hole, and a high-cost cleaning device needs to be added; or the screen hole is a long through hole, resulting in large-sized thin-sheet materials being screened out, causing undesirable degradation of some products.
[0003] Some solutions use a metal substrate with a low-hardness isolation layer on the outside, and the screen holes are round holes or long holes with the long side in the conveying direction. However, the low-hardness isolation layer is soft in texture. When used at the feed inlet, the sharp corners of the material are easy to get stuck in the holes, which requires frequent cleaning; and the sharp corners of the material will be blocked when passing through the round holes or the long holes with the long side in the conveying direction, resulting in blockage of the screen holes and inability to work continuously for a long time; at the same time, the low-hardness isolation layer is soft in texture, has poor wear resistance, and has a short service life. Utility Model Content
[0004] The main purpose of the utility model is to provide a sieve plate and a sieving mechanism to solve the problem that the sieve holes are easily blocked in the prior art.
[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a sieve plate is provided, including a main body plate and an isolation plate with a higher hardness than the main body plate, the main body plate having a plurality of sieve holes, the sieve holes longitudinally penetrating the main body plate and extending along the conveying direction of the material, the sieve holes comprising a first section and a second section longitudinally connected, the first section being located above the second section, and the size of the first section being less than or equal to the size of the second section; the upper surface of the main body plate has a groove, the sieve hole is located at the bottom of the groove, the isolation plate is arranged in the groove and is flush with the upper surface of the main body plate, and the isolation plate avoids the sieve holes.
[0006] Furthermore, there are multiple isolation plates, and an avoidance hole is formed between two adjacent isolation plates. The avoidance hole is located directly above the sieve hole, and the size of the avoidance hole is less than or equal to the size of the first section.
[0007] Furthermore, there are multiple grooves, and the grooves are spaced apart along the conveying direction, and a spacing boss is formed between two adjacent grooves. The spacing boss has a longitudinally arranged connecting hole, and both ends of the connecting hole are respectively connected to the avoidance holes at the two adjacent grooves.
[0008] Furthermore, the height of the connecting hole is greater than the width of the avoiding hole, and the width of the connecting hole is greater than or equal to the width of the avoiding hole.
[0009] Furthermore, a plurality of sieve holes are arranged in the groove, and the sieve holes in each groove are arranged at intervals along a direction perpendicular to the conveying direction, and the isolation plates are arranged at intervals in the groove along a direction perpendicular to the conveying direction.
[0010] Furthermore, the sieve holes in each groove are arranged one by one along the conveying direction and are connected through the connecting hole.
[0011] Furthermore, the sieve holes and / or avoidance holes are oblong holes or rectangular holes.
[0012] Furthermore, the main body plate includes a frame and an isolation layer, the isolation layer is coated on the outer surface of the frame, and an isolation plate is arranged above the surface of the frame located at the bottom of the groove, so that all outer surfaces of the frame are shielded by the isolation layer and the isolation plate.
[0013] Furthermore, the isolation layer is a soft layer with low hardness, and the surface of the skeleton in contact with the isolation plate is a metal surface.
[0014] According to another aspect of the present invention, a screening mechanism is provided, comprising the above-mentioned screening plate, wherein the screening plate is detachably arranged.
[0015] The technical solution of the utility model is applied, by setting a plurality of sieve holes extending along the material conveying direction on the main plate, the material passes through the sieve holes during the conveying process, and the smaller materials fall into the sieve holes. When the material enters the sieve holes, it naturally falls due to gravity, and the smaller materials are screened out, so that the smaller materials in the material can be removed, and the large-sized thin-sheet materials can be screened out, which can not only remove the smaller-sized materials in the material, but also avoid the undesirable product degradation caused by the screening out of the large-sized thin-sheet materials. At the same time, the sieve hole includes a first section and a second section connected longitudinally, and the longitudinal direction refers to the direction perpendicular to the upper surface of the main plate. The first section is located near the upper surface of the main plate, and the second section is connected to the first section and is located below the first section, and is greater than or equal to the size of the first section. In this way, when the material enters the second section from the first section of the sieve hole, it has a larger space and can fall more smoothly to avoid blocking the sieve hole. The sieve holes set along the conveying direction can minimize the blockage of the material at the sieve hole to avoid the obstruction of the material when unloading. In addition to the above-mentioned arrangement, this embodiment also arranges a groove on the upper surface of the main plate, so that an isolation plate with a higher hardness than the main plate is placed in the groove of the main plate. In this way, the sieve plate has an upper surface with high hardness, and the material is transported on the surface of the sieve plate. When the material passes through the top of the sieve hole, the sharp corners of the material will not pierce into the isolation plate due to insufficient hardness of the sieve plate surface, causing blockage, thereby achieving continuous screening with a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0017] Figure 1 The schematic diagram of the structure of the screen plate of the utility model is shown;
[0018] Figure 2 A cross-sectional view of the main body plate at the spacing boss is shown;
[0019] Figure 3 A cross-section of the body plate at the screen opening is shown.
[0020] The above drawings include the following reference numerals:
[0021] 10. Main body plate; 11. Frame; 12. Isolation layer; 20. Isolation plate; 30. Avoidance hole; 40. Sieve hole; 50. Connecting hole. DETAILED DESCRIPTION
[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.
[0024] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.
[0025] In order to solve the problem that sieve holes are easily blocked in the prior art, the utility model provides a sieve plate and a screening mechanism.
[0026] like Figure 1 , Figure 2 , Figure 3A sieve plate shown includes a main body plate 10 and an isolation plate 20 with a harderness higher than that of the main body plate 10. The main body plate 10 has a plurality of sieve holes 40. The sieve holes 40 longitudinally penetrate the main body plate 10 and extend along the conveying direction of the material. The sieve holes 40 include a first section and a second section longitudinally connected. The first section is located above the second section, and the size of the first section is less than or equal to the size of the second section. The upper surface of the main body plate 10 has a groove, and the sieve holes 40 are located at the bottom of the groove. The isolation plate 20 is arranged in the groove and is flush with the upper surface of the main body plate 10, and the isolation plate 20 avoids the sieve holes 40.
[0027] In this embodiment, by setting a plurality of sieve holes 40 extending along the material conveying direction on the main plate 10, the material passes through the sieve holes 40 during the conveying process, and the smaller material falls into the sieve holes 40. When the material enters the sieve holes 40, it falls naturally due to gravity, and the smaller material is screened out, so that the smaller material in the material can be removed, and the large-sized thin-sheet material is prevented from being screened out and causing undesirable product degradation. At the same time, the sieve hole 40 includes a first section and a second section connected in the longitudinal direction, and the longitudinal direction refers to the direction perpendicular to the upper surface of the main plate 10. The first section is located near the upper surface of the main plate 10, and the second section is connected to the first section and is located below the first section, and is greater than or equal to the size of the first section. In this way, when the material enters the second section from the first section of the sieve hole 40, it has a larger space and can fall more smoothly to avoid blocking the sieve hole 40. The sieve holes 40 set along the conveying direction can minimize the blockage of the material at the sieve hole 40 to avoid the blocking of the material when the material is discharged. In addition to the above arrangement, the present embodiment also sets a groove on the upper surface of the main plate 10, so that the isolation plate 20 with a higher hardness than the main plate 10 is placed in the groove of the main plate 10, so that the sieve plate has a high hardness upper surface, and the material is transported on the surface of the sieve plate. When passing through the sieve hole 40, the sharp corners of the material will not be stuck in the isolation plate 20 due to the insufficient hardness of the sieve plate surface, causing jamming, thereby achieving continuous and long-life screening. In the present embodiment, there are multiple isolation plates 20, and avoidance holes 30 are formed between two adjacent isolation plates 20 to facilitate the falling of materials during the conveying process. The avoidance holes 30 are located directly above the sieve hole 40, so that the materials can fall into the sieve hole 40 through the avoidance holes 30 to achieve the purpose of screening, and the size of the avoidance holes 30 is less than or equal to the size of the first section. In this way, the structure of the avoidance holes 30, the first section, and the second section is formed in sequence from top to bottom, and each hole section remains unchanged or gradually increases from top to bottom, thereby ensuring that the materials can pass through the avoidance holes 30 and the sieve hole 40 more smoothly to avoid jamming.
[0028] like Figure 1 and Figure 2As shown, there are multiple grooves in this embodiment, and the grooves are arranged at intervals along the conveying direction, and a spacing boss is formed between two adjacent grooves. The surface of each spacing boss and the surface of the isolation plate 20 together constitute the upper surface of the sieve plate for material conveying. The spacing boss has a longitudinally arranged connecting hole 50, and the two ends of the connecting hole 50 are respectively connected to the avoidance holes 30 at the two adjacent grooves, so that the materials that fall through the avoidance holes 30 and the connecting hole 50 but do not fall through the sieve hole 40, such as larger-sized thin-sheet materials, can continue to be conveyed to avoid blocking the avoidance holes 30.
[0029] Furthermore, the height of the connecting hole 50 is greater than the width of the avoidance hole 30, and the width of the connecting hole 50 is greater than or equal to the width of the avoidance hole 30, so that the size of the connecting hole 50 is greater than the size of the avoidance hole 30, which is conducive to the smooth passage of materials. When the material enters the connecting hole 50 from the avoidance hole 30, the larger width and depth allow the material to pass smoothly. When entering the avoidance hole 30 from the connecting hole 50, the high hardness isolation plate 20 prevents the sharp corners of the material from piercing the hole wall and causing blockage.
[0030] like Figure 3 As shown, in this embodiment, a plurality of sieve holes 40 are arranged in the groove, and the sieve holes 40 in each groove are arranged at intervals in a direction perpendicular to the conveying direction, and the isolation plates 20 are arranged at intervals in the groove in a direction perpendicular to the conveying direction. Specifically, the groove is opened horizontally as a whole, and its depth is relatively shallow. The sieve holes 40 are opened vertically downward at the bottom of the groove, and the arrangement direction of the sieve holes 40 is the same as the length direction of the groove, that is, the length direction of the groove is perpendicular to the conveying direction of the material, so that a plurality of parallel but non-overlapping sieve holes 40 are formed, and each sieve hole 40 can cover different positions in the width direction of the sieve plate, so that the sieve plate as a whole can achieve a screening effect. The isolation plates 20 are laid flat in the groove, and the isolation plates 20 are arranged horizontally, and the surface with a larger area fits the bottom surface of the groove, and the isolation plates 20 are arranged at intervals perpendicular to the conveying direction, so that the avoidance holes 30 with the same extension direction as the sieve holes 40 are formed between the isolation plates 20, and the avoidance holes 30 can be located directly above the sieve holes 40, so that the two cooperate in the screening effect.
[0031] At the same time, since there are multiple grooves, each groove is arranged in sequence along the conveying direction, so that a spacing boss is formed between two adjacent grooves. For each groove, its arrangement mode and the matching mode with the sieve hole 40 and the isolation plate 20 are basically the same, so that the avoidance holes 30 in each groove are connected through the connecting hole 50, and then the sieve hole 40 is connected through the avoidance hole 30 or directly with the connecting hole 50. In this way, a through hole is formed in the conveying direction, so that the material stuck in the hole and not falling can continue to be conveyed forward.
[0032] Since the present embodiment is provided with a plurality of sieve holes 40, a plurality of avoidance holes 30, and a plurality of connecting holes 50, the present embodiment preferably provides the sieve holes 40, the avoidance holes 30, and the connecting holes 50 in one-to-one correspondence, so that a group of three of them forms a through hole, and a plurality of through holes are formed as a whole.
[0033] Optionally, the sieve hole 40 and / or the avoidance hole 30 are oblong holes or rectangular holes, which are conducive to the smooth passage of materials through the sieve holes. Preferably, the sieve hole 40 is an oblong hole, and the avoidance hole 30 is a rectangular hole, so that it can meet the screening requirements and facilitate processing.
[0034] The main plate 10 of this embodiment includes a frame 11 and an isolation layer 12. The isolation layer 12 is coated on the outer surface of the frame 11. An isolation plate 20 is arranged above the surface of the frame 11 located at the bottom of the groove. The frame 11 is a relatively hard material, and the isolation layer 12 can be a soft material layer with a relatively soft hardness. In this way, all exposed outer surfaces of the frame 11 are blocked by the isolation layer 12 and the isolation plate 20, so that the material will not directly contact the frame 11, but will contact the isolation layer 12. Since the material of the isolation layer 12 is relatively soft and not easy to break, the screen plate can be made into a separately replaceable structure.
[0035] Preferably, the isolation layer 12 is a soft layer with low hardness, and the surface of the skeleton 11 in contact with the isolation plate 20 is a metal surface. On the one hand, when the material contacts the isolation layer 12, the material is not easily broken because the isolation layer 12 is made of a softer material. On the other hand, the surface where the skeleton 11 is connected to the isolation plate 20 is a metal surface, which has a high connection strength and a longer service life.
[0036] The sieve plate of this embodiment is a plate-like structure as a whole, with small installation size requirements and relatively low processing and use costs. The specific size of the sieve hole 40 can be set accordingly as needed. When the sieve plate of this embodiment is working, it forms an angle of 0-30° with the horizontal plane in the conveying direction, preferably 5-20°. The skeleton 11 is a metal material part, preferably a stainless steel part. The isolation layer 12 is a non-metallic material layer, preferably a polyurethane layer. The isolation plate 20 is a hard metal part or a non-metallic material part, preferably a tungsten carbide part.
[0037] The present embodiment also provides a screening mechanism, including the above-mentioned screen plate. Due to the setting of the isolation layer 12, the screen plate is detachably arranged, so that it is convenient to replace different specifications. The use process of the screen plate of the present embodiment is as follows: the brittle block material passes through the screen plate under the action of the driving force. When the material passes above the screen hole 40 during the conveying process, the material with an outer size smaller than the size of the avoidance hole 30 enters the avoidance hole 30, and then falls through the screen hole 40 to be screened out, and the material with a size greater than or equal to the size of the screen hole 40 continues to be conveyed forward.
[0038] It should be noted that, the multiple in the above embodiments refers to at least two.
[0039] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:
[0040] 1. Solved the problem of easy clogging of screen holes in the screening mechanism.
[0041] 2. It greatly reduces the probability of material getting stuck in the screen plate and reduces the cleaning cost.
[0042] 3. Solved the problem of large-sized thin-sheet materials being screened out and improved the screening quality.
[0043] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.
[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A sieve plate, characterized in that: include: A main body plate (10), the main body plate (10) having a plurality of sieve holes (40), the sieve holes (40) longitudinally penetrating the main body plate (10) and extending along a conveying direction of a material, the sieve holes (40) comprising a first section and a second section longitudinally connected, the first section being located above the second section, and the size of the first section being less than or equal to the size of the second section; The isolation plate (20) has a higher hardness than the main plate (10), the upper surface of the main plate (10) has a groove, the sieve hole (40) is located at the bottom of the groove, the isolation plate (20) is arranged in the groove and is flush with the upper surface of the main plate (10), and the isolation plate (20) avoids the sieve hole (40).
2. The sieve plate according to claim 1, characterized in that There are a plurality of isolation plates (20), and an avoidance hole (30) is formed between two adjacent isolation plates (20). The avoidance hole (30) is located directly above the sieve hole (40), and the size of the avoidance hole (30) is less than or equal to the size of the first section.
3. The sieve plate according to claim 2, characterized in that: There are a plurality of grooves, and the grooves are arranged at intervals along the conveying direction. A spacing boss is formed between two adjacent grooves. The spacing boss has a longitudinally arranged connecting hole (50). Both ends of the connecting hole (50) are respectively connected to the avoidance holes (30) at the two adjacent grooves.
4. The sieve plate according to claim 3, characterized in that The height of the connecting hole (50) is greater than the width of the avoiding hole (30), and the width of the connecting hole (50) is greater than or equal to the width of the avoiding hole (30).
5. The sieve plate according to claim 3, characterized in that: A plurality of sieve holes (40) are arranged in the groove, and the sieve holes (40) in each of the grooves are arranged at intervals in a direction perpendicular to the conveying direction, and the isolation plates (20) are arranged in the grooves at intervals in a direction perpendicular to the conveying direction.
6. The sieve plate according to claim 5, characterized in that The sieve holes (40) in each of the grooves are arranged in a one-to-one correspondence along the conveying direction and are connected through the connecting hole (50).
7. The sieve plate according to claim 2, characterized in that: The sieve hole (40) and / or the avoidance hole (30) are oblong holes or rectangular holes.
8. The sieve plate according to claim 1, characterized in that The main body plate (10) comprises a frame (11) and an isolation layer (12), wherein the isolation layer (12) covers the outer surface of the frame (11), and the isolation plate (20) is arranged above the surface of the frame (11) located at the bottom of the groove, so that all outer surfaces of the frame (11) are shielded by the isolation layer (12) and the isolation plate (20).
9. The sieve plate according to claim 8, characterized in that The isolation layer (12) is a soft layer with low hardness, and the surface of the skeleton (11) in contact with the isolation plate (20) is a metal surface.
10. A screening mechanism, characterized in that: The sieve plate comprises the sieve plate according to any one of claims 1 to 9, wherein the sieve plate is detachably arranged.