Automatic conveying and screening system

Abstract

The utility model discloses an automatic conveying and screening system which comprises at least three screening devices, a stock bin and a vortex air pump, the screening devices are connected through pipelines, and each screening device comprises a vacuum feeding machine, a supporting frame, a weighing stock bin, an electromagnetic feeding machine, a material suction adapter and an ultrasonic rotary vibration screen. The vacuum feeding machine, the weighing stock bin and the electromagnetic feeding machine are sequentially installed on the supporting frame from top to bottom, the electromagnetic feeding machine corresponds to feeding of the ultrasonic rotary vibration screen, and the vacuum feeding machine and a feeding port of the first-stage screening device are connected with an outlet of the stock bin through a pipeline. An air suction connector of a vacuum feeding machine of the screening device is connected with a vortex air pump through a pipeline; quantitative conveying and screening of diamonds are completed in sequence in a grading mode, and finished products needed by customers can be obtained. According to the scheme, the materials can be fed and screened for multiple times in sequence, the problem of overloading of the screen during one-time screening is avoided, and the handling capacity and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond screening, in particular to an automatic conveying and screening system. Background Art

[0002] In the production and processing of diamond materials, the uniformity and precision of particles are extremely high. Diamond powder is widely used in cutting tools, abrasive materials, electronic components and other fields, and its quality directly affects the performance of the product. In order to meet the requirements of diamond particle size in different applications, diamond powder needs to be accurately screened. However, traditional screening methods mainly rely on mechanical vibration screening, airflow screening and gravity screening. These methods have certain limitations in practical applications and are difficult to meet the requirements of high-precision screening.

[0003] There are many problems with traditional screening technology; traditional rotary vibrating screens rely only on a single device with multiple screens to screen different particle sizes. The screening effect is affected by the uniformity of the feed, the screen load, and the screening accuracy is easily reduced, the screen is blocked, the screening rate is unstable, etc. In addition, the screening speed is slow due to the limitation of the number of screening layers at one time, especially the fine particles are prone to accumulation, which affects the production efficiency. Therefore, a new diamond screening system that integrates vacuum conveying, electromagnetic feeding and ultrasonic screening technologies is urgently needed to achieve efficient, accurate and environmentally friendly screening goals. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automated conveying and screening system. The screening devices of the utility model are arranged in a plurality of pieces and connected in series, and the quantitative conveying and screening of diamonds are completed in sequence and graded, and the finished materials required by customers can be obtained. The materials of this scheme can be subjected to multiple feeding and screening in sequence and analogously, so as to avoid the problem of screen overload during one-time screening, improve the processing capacity and production efficiency, avoid the problem of decreased screening efficiency caused by one-time screening of traditional multi-layer screens, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automated conveying and screening system, comprising a screening device, a silo and a vortex air pump, at least three screening devices are arranged, and the screening devices are connected by pipelines, the screening device comprises a vacuum loader, a support frame, a weighing silo, an electromagnetic feeder, a suction adapter and an ultrasonic rotary vibrating screen, the vacuum loader, the weighing silo and the electromagnetic feeder are sequentially installed on the support frame from top to bottom, the electromagnetic feeder corresponds to the feeding of the ultrasonic rotary vibrating screen, the vacuum loader of the first-stage screening device is connected to the feeding port and the silo outlet through a pipeline, the suction interface of the vacuum loader of the screening device is respectively connected to the vortex air pump through pipelines, the discharge port of the screened material of the ultrasonic rotary vibrating screen is connected with a suction adapter, and the suction adapter of the upper-stage screening device is connected to the feeding port of the vacuum loader of the lower-stage screening device through a pipeline.

[0006] Furthermore, a pneumatic butterfly valve is provided at the lower outlet of the vacuum loader, the outlet of the pneumatic butterfly valve is connected to the inlet of the weighing silo, and the outlet of the weighing silo corresponds to the inlet of the electromagnetic feeder.

[0007] Furthermore, the ultrasonic rotary vibrating screen has only one layer of screen, and the screened material discharge port of the ultrasonic rotary vibrating screen is provided with a screened finished product bin, and the powder screening accuracy of the next-level ultrasonic rotary vibrating screen is higher than that of the previous-level ultrasonic rotary vibrating screen.

[0008] Furthermore, it also includes an under-screen material bin, and the discharge port of the last-stage ultrasonic rotary vibrating screen corresponds to the under-screen material bin.

[0009] Furthermore, a suction adapter is provided at the lower outlet of the silo, and the outlet of the suction adapter is connected to the inlet of the vacuum loader of the first-stage screening device through a pipeline.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model sets several screening devices, which are connected in series, and complete the quantitative conveying and screening of diamonds in sequence and can achieve the finished product materials required by customers; the materials of this scheme can be fed and screened multiple times in sequence, avoiding the problem of screen overload during one-time screening, improving the processing capacity and production efficiency, and avoiding the problem of decreased screening efficiency caused by one-time screening of traditional multi-layer screens.

[0012] 2. The utility model adopts a combination of vacuum conveying and electromagnetic feeding to improve the efficiency and stability of material conveying; vacuum conveying can effectively reduce dust pollution, ensure the airtightness of material conveying, and reduce the risk of cross-contamination during screening; the electromagnetic feeder can accurately control the material supply rate to make the screening more uniform and avoid screening instability caused by material accumulation or overload; in addition, the multi-stage screening function of the system can realize the recycling of materials, improve raw material utilization and reduce waste.

[0013] 3. The entire system adopts a closed-loop screening mode to reduce manual operations and improve the stability of large-scale production. It is suitable for industrial screening applications of high-value granular materials such as diamonds. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the screening device of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the powder screening system of the utility model.

[0016] In the figure: 1 vacuum loader, 2 support frame, 3 weighing silo, 4 electromagnetic feeder, 5 suction adapter, 6 ultrasonic rotary vibrating screen, 7 finished product bin above the screen, 8 pneumatic butterfly valve, 9 silo, 10 material bin below the screen, 11 vortex air pump. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Embodiment 1

[0018] See also Figure 1-2The utility model provides a technical solution: an automated conveying and screening system, including a screening device, a silo 9 and a vortex air pump 11. At least three screening devices are provided, and the screening devices are multi-stage to meet the particles required by customers, and the screening devices are connected through pipelines. The screening device includes a vacuum feeder 1, a support frame 2, a weighing silo 3, an electromagnetic feeder 4, a suction adapter 5 and an ultrasonic rotary vibrating screen 6. The vacuum feeder 1, the weighing silo 3 and the electromagnetic feeder 4 are sequentially installed on the support frame 2 from top to bottom. The electromagnetic feeder 4 corresponds to the feeding of the ultrasonic rotary vibrating screen 6. The electromagnetic feeder 4 evenly conveys the quantitatively weighed materials to the ultrasonic rotary vibrating screen 6 to prevent material accumulation or blockage. The vacuum feeder 1 of the first-stage screening device is connected to the feed port and the outlet of the silo 9 through a pipeline. The suction interface of the vacuum feeder 1 of the screening device is respectively connected to the vortex air pump 11 through a pipeline, and the negative pressure is generated by the vortex air pump 11. The material is conveyed to the weighing silo 3 through the vacuum feeder 1 under pressure to provide quantitative material for subsequent screening. The discharge port of the underscreen of the ultrasonic rotary vibrating screen 6 is connected with a suction adapter 5. The provided suction adapter 5 is used to assist the material to enter the vacuum feeder 1. The negative pressure conveying technology is used to reduce dust pollution and improve the conveying efficiency. The connection relationship is that the suction adapter 5 of the upper screening device is connected to the feeding port of the vacuum feeder 1 of the lower screening device through a pipeline. The overscreen material is the target particle that meets the customer's requirements and can directly enter the finished product stage; the underscreen material can be used as the preparatory material for the secondary screening and can re-enter the screening process for reprocessing. In this way, multiple screening devices can be connected in series to realize multi-stage powder screening. This scheme adopts closed-loop screening, vacuum conveying + electromagnetic feeding + automatic screening control, which can realize automatic feeding, screening, recycling, and multi-stage automatic loading, reduce manual intervention, improve production stability, and is suitable for large-scale production.

[0019] A pneumatic butterfly valve 8 is provided at the lower outlet of the vacuum loader 1, and the opening and closing of the pneumatic butterfly valve 8 is controlled by an external controller. When the weighing sensor on the weighing silo 3 detects a qualified weight, the signal is transmitted to the controller, and the controller controls the pneumatic butterfly valve 8 to close. The outlet of the pneumatic butterfly valve 8 is connected to the inlet of the weighing silo 3, and the outlet of the weighing silo 3 corresponds to the inlet of the electromagnetic feeder 4. The material is quantitatively weighed through the weighing silo 3 to ensure that the transportation of each batch is accurate and controllable.

[0020] The ultrasonic rotary vibrating screen 6 has only one layer of screen, and the traditional rotary vibrating screen only relies on the multi-layer screen of a single device to screen different particle sizes. Its screening effect is affected by the uniformity of feed, screen load, and is prone to reduced screening accuracy, screen blockage, unstable screening rate, etc., and is limited by the number of one-time screening layers, so the screening speed is slow, especially fine particles are easily accumulated, affecting production efficiency. The screened material outlet of the ultrasonic rotary vibrating screen 6 is provided with a screened finished product bin 7, and each level of the screened finished product bin 7 holds materials of different precisions to meet customer needs. The screening accuracy of the ultrasonic rotary vibrating screen 6 of the next level is higher than that of the ultrasonic rotary vibrating screen 6 of the previous level. In this way, the quantitative conveying and screening of diamonds is completed in sequence, and the materials required by customers as finished products can be obtained. The materials in this scheme can be subjected to multiple feeding and screening in turn, avoiding the problem of screen overload during one-time screening, improving the processing capacity and production efficiency, and avoiding the problem of reduced screening efficiency caused by one-time screening of traditional multi-layer screens.

[0021] This solution uses an electromagnetic feeder 4 to accurately control the feed speed, optimize material flow, make the screening process smoother, reduce material accumulation, and improve production efficiency. It uses a suction adapter 5 + vacuum feeder 1 to send the screened material back to the next screening system to improve screening efficiency. This design maximizes the use of materials, reduces waste, and improves product yield.

[0022] It also includes an undersize material bin 10, and the discharge port of the last-stage ultrasonic rotary vibrating screen 6 corresponds to the undersize material bin 10, and the undersize material bin 10 is used to store unqualified materials.

[0023] A suction adapter 5 is provided at the lower outlet of the silo 9, and the outlet of the suction adapter 5 is connected to the inlet of the vacuum feeder 1 of the first-stage screening device through a pipeline; the electromagnetic feeder 4, the suction adapter 5 and the ultrasonic rotary vibrating screen 6 are all existing devices and are conventional technologies, and will not be described in detail here.

[0024] Working principle: The diamond screening system of the utility model adopts a combination of vacuum conveying, electromagnetic feeding, ultrasonic rotary vibrating screen and closed-loop screening to ensure the high efficiency and accuracy of material screening; the vortex air pump provides negative pressure, and the material is conveyed to the weighing silo through the vacuum feeder. The electromagnetic feeder controls the uniform feeding to avoid material accumulation and improve the screening stability; the ultrasonic rotary vibrating screen uses high-frequency vibration to reduce particle adhesion and prevent screen clogging, and realizes accurate grading through a series of multi-stage screening systems. The screened material enters the finished product warehouse as the final product, and the screened material can be recycled and enter the next level of screening, forming a closed-loop screening mode to improve material utilization. The entire process is monitored by an intelligent control system, and the screening parameters are automatically adjusted to reduce manual intervention. At the same time, a fully enclosed structure is used to reduce dust pollution to ensure environmentally friendly and efficient production operations.

[0025] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. An automated conveying and screening system, comprising a screening device, a silo (9) and a vortex air pump (11), characterized in that: At least three screening devices are provided, and the screening devices are connected by pipelines. The screening devices include a vacuum feeder (1), a support frame (2), a weighing bin (3), an electromagnetic feeder (4), a suction adapter (5) and an ultrasonic rotary vibrating screen (6). The vacuum feeder (1), the weighing bin (3) and the electromagnetic feeder (4) are sequentially mounted on the support frame (2) from top to bottom. The electromagnetic feeder (4) corresponds to the feeding of the ultrasonic rotary vibrating screen (6). The vacuum feeder (1) of the first-stage screening device is connected to the feeding port and the outlet of the bin (9) through a pipeline. The suction interface of the vacuum feeder (1) is connected to the vortex air pump (11) through pipelines. The discharge port of the screened material of the ultrasonic rotary vibrating screen (6) is connected to the suction adapter (5). The suction adapter (5) of the upper stage is connected to the feeding port of the vacuum feeder (1) of the lower stage through a pipeline.

2. The automated conveying and screening system according to claim 1, characterized in that: A pneumatic butterfly valve (8) is provided at the lower outlet of the vacuum feeder (1), the outlet of the pneumatic butterfly valve (8) is connected to the inlet of the weighing bin (3), and the outlet of the weighing bin (3) corresponds to the inlet of the electromagnetic feeder (4).

3. The automated conveying and screening system according to claim 1, characterized in that: The ultrasonic rotary vibrating screen (6) has only one layer of screen mesh, and an overscreen finished product bin (7) is provided at the overscreen material discharge port of the ultrasonic rotary vibrating screen (6). The powder screening accuracy of the ultrasonic rotary vibrating screen (6) at the next level is higher than that of the ultrasonic rotary vibrating screen (6) at the previous level.

4. The automated conveying and screening system according to claim 1, characterized in that: It also includes an under-screen material bin (10), and the discharge port of the last-stage ultrasonic rotary vibrating screen (6) corresponds to the under-screen material bin (10).

5. The automated conveying and screening system according to claim 1, characterized in that: A suction adapter (5) is provided at the lower outlet of the silo (9), and the outlet of the suction adapter (5) is connected to the inlet of the vacuum feeder (1) of the first-stage screening device through a pipeline.

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