Integrated screening and crushing recycling device for carbon production
Patent Information
- Application Number
- CN202521978755.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-15
AI Technical Summary
然而，现有的生产工艺中存在两个显著痛点：首先，在筛分工序中，总会产生一部分粒径普遍大于50mm（通常为50mm-100mm甚至更大） 的大颗粒碳素，这些大块物料无法直接满足大多数客户的规格要求，若不经处理直接混入成品，将导致产品批次不合格，严重影响产品质量和售价，传统做法是将这部分不合格品收集后，人工转运返回至上游破碎机进行重新破碎，此过程不仅劳动强度大、效率低下，而且极易产生粉尘污染，恶化车间环境
[0006]采用上述技术方案的本实用新型，与现有技术相比，其突出的特点是：
Smart Images
Figure CN224822860U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of carbon screening technology, specifically an integrated screening and crushing recycling device for carbon production. Background Technology
[0002] In the carbon production industry, the carbon products formed after calcining petroleum coke need to undergo strict screening and grading to meet the specifications of different downstream applications. Currently, vibrating screens are commonly used to screen the calcined carbon, separating the product into multiple specifications according to particle size. However, there are two significant pain points in the existing production process: First, during the screening process, a portion of large carbon particles with a diameter generally greater than 50mm (usually 50mm-100mm or even larger) will always be generated. These large particles cannot directly meet the specifications of most customers. If they are directly mixed into the finished product without treatment, it will lead to batch defects, seriously affecting product quality and selling price. The traditional approach is to collect these defective products and manually transport them back to the upstream crusher for re-crushing. This process is not only labor-intensive and inefficient, but also easily generates dust pollution, deteriorating the workshop environment.
[0003] Secondly, the qualified products after screening need to be packaged and sorted according to different particle size specifications (such as 0-5mm, 5-15mm, 15-25mm, etc.). The necessity of packaging by specification is that carbon products with different particle sizes have completely different uses and values. For example, fine particles are mainly used to produce products such as electrode paste, while coarse particles are the key raw materials for producing high-power graphite electrodes. If products of different specifications are mixed for storage and transportation, it will not only reduce the product grade and make it impossible to achieve high-quality sales, but also affect the performance stability of the final carbon products due to uneven composition in subsequent use. Utility Model Content
[0004] The present invention aims to solve the above problems, thereby providing an integrated screening and crushing recycling device for carbon production that enables fine grading of multiple specifications.
[0005] The technical solution adopted by this utility model to solve the aforementioned problem is: An integrated screening and crushing circulation device for carbon production includes a screening machine, an elevator, and an industrial vacuum cleaner. The discharge end of the elevator is located above the feed end of the screening machine. The screening machine is equipped with a large particle discharge port and at least one qualified product discharge port. A circulation crushing mechanism is provided between the large particle discharge port and the elevator. A material discharge mechanism is connected below the qualified product discharge port. The industrial vacuum cleaner is connected to the internal parts of the screening machine, the circulation crushing mechanism, and the material discharge mechanism through a dust collection pipe network.
[0006] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are: By setting up a circulating crushing mechanism, large particles that do not meet the specifications after screening can be automatically transported to the crusher for crushing. The crushed material is then returned to the screening system for grading via an elevator, achieving online automatic recycling of unqualified materials. This effectively replaces the traditional manual transfer and crushing method, helping to reduce labor intensity, improve production efficiency, and reduce dust emissions during the production process. Multiple qualified product discharge ports and corresponding unloading mechanisms facilitate the separate collection of products of different specifications after screening, creating favorable conditions for subsequent packaging and storage by specification, and helping to maintain product specification stability. The installation of industrial vacuum cleaners and a dust collection network enables dust collection at multiple dust-generating points, including screening, crushing, and unloading, helping to improve the working environment and reduce dust pollution.
[0007] As a preferred embodiment, a further technical solution of this utility model is: Furthermore, the screening machine is a vibrating screen with multiple layers of screens inside. The discharge port corresponding to the top layer of screen is the discharge port for large particles. Taking advantage of the high efficiency and large processing capacity of the vibrating screen, and through the configuration of multiple layers of screens, multi-stage separation of materials is achieved, separating the largest particles from the top layer and guiding them to the circulating crushing mechanism.
[0008] Furthermore, the material feeding mechanism includes a feeding pipe and a conical hopper located at the bottom of the discharge end of the guide pipe. The structure of the conical hopper helps to collect and guide the falling material, which may reduce the possibility of blockage during the falling process and has a certain restraining effect on dust generation.
[0009] Furthermore, the circulating crushing mechanism includes a crusher, a discharge pipe between the crusher's feed inlet and the large particle discharge outlet, and a return conveyor between the crusher's discharge outlet and the elevator. The discharge end of the return conveyor is located above the elevator's feed inlet, thus creating a material circulation channel. This allows large particles to be automatically conveyed to the crusher for crushing and automatically returned to the elevator, achieving continuous operation of the crushing and screening processes and reducing material transfer in intermediate links.
[0010] Furthermore, the return conveyor is a closed belt conveyor, which can form a relatively enclosed space during the material conveying process. This helps to prevent materials from scattering and dust from spreading during the conveying process, and is of positive significance for maintaining environmental cleanliness.
[0011] Furthermore, the dust collection network includes a main dust collection pipe and multiple dust collection branch pipes. One end of each dust collection branch pipe is connected to the screening machine, the circulating crushing mechanism, and each material feeding mechanism. The other end of each dust collection branch pipe merges into the main dust collection pipe, which is connected to the inlet of the industrial vacuum cleaner. This allows the dust generated in these areas to be sucked into the main pipe and collected by the industrial vacuum cleaner, achieving centralized treatment of multiple dust points and helping to improve the overall dust removal effect. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; The components in the diagram are labeled as follows: 1. Vibrating screen; 2. Elevator; 3. Industrial vacuum cleaner; 4. Feed pipe; 5. Discharge pipe; 6. Conical hopper; 7. Crusher; 8. Return conveyor; 9. Vacuum pipe; 10. Vacuum branch pipe. Detailed Implementation
[0013] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.
[0014] An integrated screening and crushing circulation device for carbon production includes a screening machine, an elevator 2, and an industrial vacuum cleaner 3. The elevator 2 is a bucket elevator. The vibrating screen 1 is fixed at a high position by a support. The discharge end of the elevator 2 is located above the feed end of the screening machine. The screening machine is equipped with a large particle discharge port and at least one qualified product discharge port. The particle diameter discharged through the large particle discharge port of the screening machine is generally above 50mm (which can be changed according to different needs). The particle size discharged through the qualified product discharge port can be selected according to customer needs. A circulation crushing mechanism is provided between the large particle discharge port and the elevator 2. A material discharge mechanism is connected below the qualified product discharge port. The industrial vacuum cleaner 3 is connected to the internal parts of the screening machine, the circulation crushing mechanism, and the material discharge mechanism through a dust collection pipe network.
[0015] Furthermore, the screening machine is a vibrating screen 1, which has multiple layers of screens inside. The discharge port of the uppermost screen is for large particles. The aperture of the screen is selected and configured according to the specifications of the carbon products to be graded. During operation, the drive motor drives the main shaft of the vibrator to rotate, and the eccentric block on the vibrator generates centrifugal inertial force, forcing the screen box to reciprocate in an approximately circular or linear trajectory. The carbon material fed into the feed port at the top of the screen box is dispersed under the action of vibration and moves forward along the screen surface. During this process, material particles smaller than the screen aperture size fall through the screen holes into the lower screen or directly become undersize products, while material larger than the screen aperture size continues to move along the screen surface as oversize material until it is discharged from the corresponding discharge port. By utilizing the high efficiency and large processing capacity of the vibrating screen 1, and through the configuration of multiple screens, multi-stage separation of materials is achieved, and the material with the largest particle size is separated from the top layer and guided to the circulating crushing mechanism.
[0016] Furthermore, the material feeding mechanism includes a material feeding pipe 4 and a conical hopper 6 located at the bottom of the discharge end of the guide pipe. The number of conical hoppers 6 and qualified product discharge ports are determined according to the requirements of different specifications. A valve is provided at the bottom of the conical hopper 6. The structure of the conical hopper 6 helps to collect and guide the falling material, which may reduce the blockage of the material during the falling process and has a certain restraining effect on the generation of dust.
[0017] Furthermore, the circulating crushing mechanism includes a crusher 7, a discharge pipe 5 between the feed inlet and the large particle discharge outlet of the crusher 7, and a return conveyor 8 between the discharge outlet of the crusher 7 and the elevator 2. The discharge end of the return conveyor 8 is located above the feed inlet of the elevator 2, thus constructing a material circulation channel. This allows large particles to be automatically conveyed to the crusher 7 for crushing and automatically returned to the elevator 2 after crushing. This achieves continuous operation of the crushing and screening processes and reduces material transfer in intermediate links.
[0018] Furthermore, the return conveyor 8 is a closed belt conveyor, which can form a relatively enclosed space during the material conveying process. This helps to prevent materials from scattering and dust from spreading during the conveying process, which is of positive significance for maintaining environmental cleanliness.
[0019] Furthermore, the dust collection network includes a main dust collection pipe 9 and multiple dust collection branch pipes 10. One end of each dust collection branch pipe 10 is connected to the screening machine, the circulating crushing mechanism, and each material discharge mechanism. The dust collection branch pipes 10 are connected to the interior of the crusher 7 and the conical hopper 6. The other end of each dust collection branch pipe 10 is connected to the main dust collection pipe 9. The main dust collection pipe 9 is connected to the inlet of the industrial vacuum cleaner 3, which can suck the dust generated in these parts into the main pipe and collect it into the industrial vacuum cleaner 3, realizing the centralized treatment of multiple dust points and helping to improve the overall dust removal effect. The industrial vacuum cleaner 3 is equipped with a dust collection hopper and a discharge valve at the bottom. All the carbon dust collected by the dust collection network is separated and captured in the industrial vacuum cleaner 3 and then settles in the dust collection hopper. By opening the discharge valve at timed intervals or manually, the collected pure carbon dust can be discharged and collected.
[0020] The calcined carbon material is conveyed to the feed inlet of the vibrating screen 1 by the elevator 2. The material is precisely graded under the action of multiple screens of the vibrating screen 1. The large carbon particles with a diameter greater than 50mm are discharged from the top large particle discharge port and automatically enter the crusher 7 for crushing through the discharge pipe 5. After crushing, the material returns to the feed inlet of the elevator 2 via the closed return conveyor 8 and re-enters the screening system to form a closed loop, ensuring the complete utilization of the material. At the same time, the qualified products of various specifications separated by the vibrating screen 1 (such as 0-5mm, 5-15mm, 15-25mm, 25-50mm) are collected separately through the discharge pipe 4 and the conical hopper 6 below them, realizing fine grading and packaging by specification. The dust generated in the entire screening, crushing, conveying and discharge process is collected by the dust suction branch pipe 10 at the dust generation point under negative pressure and then merged into the industrial vacuum cleaner 3 for unified purification through the main dust suction pipe 9. The collected carbon dust is discharged and recycled through the dust collection hopper and the unloading valve, which significantly improves the working environment and realizes clean production.
[0021] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.
Claims
1. An integrated screening and crushing recycling device for carbon production, characterized in that: It includes a screening machine, an elevator, and an industrial vacuum cleaner. The discharge end of the elevator is located above the feed end of the screening machine. The screening machine is equipped with a large particle discharge port and at least one qualified product discharge port. A circulating crushing mechanism is provided between the large particle discharge port and the elevator. A material discharge mechanism is connected below the qualified product discharge port. The industrial vacuum cleaner is connected to the internal parts of the screening machine, the circulating crushing mechanism, and the material discharge mechanism through a dust collection pipe network.
2. The integrated screening and crushing recycling device for carbon production according to claim 1, characterized in that: The screening machine is a vibrating screen, which has multiple layers of screens inside. The discharge port corresponding to the uppermost screen is the discharge port for large particles.
3. The integrated screening and crushing recycling device for carbon production according to claim 1, characterized in that: The material feeding mechanism includes a material feeding pipe and a conical hopper located at the bottom of the material discharge end of the guide pipe.
4. The integrated screening and crushing recycling device for carbon production according to claim 1, characterized in that: The circulating crushing mechanism includes a crusher, a discharge pipe between the crusher's feed inlet and the large particle discharge outlet, and a return conveyor between the crusher's discharge outlet and the elevator. The discharge end of the return conveyor is located above the elevator's feed inlet.
5. The integrated screening and crushing recycling device for carbon production according to claim 4, characterized in that: The return conveyor is an enclosed belt conveyor.
6. The integrated screening and crushing recycling device for carbon production according to claim 1, characterized in that: The dust collection network includes a main dust collection pipe and multiple dust collection branch pipes. One end of each dust collection branch pipe is connected to the screening machine, the circulating crushing mechanism, and each material feeding mechanism. The other end of each dust collection branch pipe merges into the main dust collection pipe, which is connected to the inlet of the industrial vacuum cleaner.