Screening device for coal processing

Abstract

The utility model discloses a screening device for coal processing, which relates to the technical field of coal processing and comprises a base, a support frame is fixedly mounted at the top of the base, a guide hopper is fixedly mounted at the upper end of the support frame, and a feeding mechanism is fixedly mounted in the middle of the rear side of the guide hopper. By the adoption of the structure, materials are guided into the guide hopper and then discharged to the arc-shaped filter screen, the obliquely-arranged filter screen assists in filtering and screening, the two sets of filter screens are different in hole diameter, the hole diameter of the upper end is large, the hole diameter of the lower end is small, classified screening is achieved, screened coal is fed into the collecting frame through the discharging frame, efficient classified filtering is achieved, and in the screening process, the screening efficiency is improved. The first motor is started to drive the rotating shaft to rotate, the scraping plate scrapes the interior of the filter screen, filter screen holes are effectively prevented from being blocked, the overall filtering and screening efficiency is improved, and the device is exquisite in design, easy and convenient to operate and capable of remarkably improving the coal processing quality and efficiency and is important equipment in the coal processing field.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal processing, and particularly relates to a screening device for coal processing. Background Art

[0002] The screening device for coal processing is an indispensable equipment in the coal processing process, mainly used for classifying coal according to different particle sizes. There are various types of screening devices, such as vibrating screens, circular vibrating screens, linear screens, heavy-duty screens, etc. The working principles of these screening devices mainly make the coal separate on the screen through vibration, rotation or flipping movements on the screen mesh;

[0003] The Chinese patent with the publication number "CN209362975U" discloses a screening device for coal, which includes a main body and a connecting frame. Universal wheels are movably installed at the four corner positions of the bottom of the connecting frame, connecting columns are fixedly installed at the four corner positions of the top of the connecting frame, a first spring is fixedly installed at the top of the connecting column, and the first spring is fixedly connected with the main body. A vibration motor is fixedly installed at the rear position near the bottom of the main body, a speed control box is fixedly installed at the rear position inside the main body, a speed control plate is arranged inside the speed control box, and a handle is fixedly installed at the center position on one side of the speed control plate. The screening device for coal of the utility model is provided with a fixed column, a vibrating column and a speed control box. Firstly, it can increase the vibration force of the whole screening device, and the vibration force is more uniform. Secondly, it can facilitate the feeding in cooperation with people's work, improve the use effect and bring a better use prospect.

[0004] During the use of the above device, although it can achieve better uniform vibration force, secondly, it can facilitate the feeding in cooperation with people's work and improve the use effect. However, although the vibration screening method can play a certain screening role, in the overall screening process, fine coal slag is extremely easy to block and fill the mesh holes of the filter screen, and the edges and corners of the coal are extremely easy to get stuck in the back of the filter screen, thus easily causing its blockage. It can be seen that there are certain defects and deficiencies in its overall use process, so it needs to be improved. Summary of the Utility Model

[0005] Aiming at the problems mentioned in the background art, the purpose of the utility model is to provide a screening device for coal processing to solve the problems put forward in the background art.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A screening device for coal processing, comprising a base, a support frame fixedly installed at the top of the base, a guiding hopper fixedly installed at the upper end of the support frame, a feeding mechanism fixedly installed in the middle at the rear side of the guiding hopper, the output end of the feeding mechanism being communicated with the inside of the guiding hopper, a filtering mechanism fixedly installed at equal intervals inside the support frame, a collecting mechanism fixedly installed at one side of the base, and the top of the collecting mechanism corresponding to the output end of the filtering mechanism;

[0008] The filtering mechanism includes an arc-shaped filter screen fixedly installed at equal intervals inside the support frame. The arc-shaped filter screen is arranged to incline downward towards the collecting mechanism. A first motor is fixedly installed at the upper end of the arc-shaped filter screen. The output end of the first motor penetrates through the arc-shaped filter screen and is fixedly installed with a rotating shaft. Scrapers are fixedly installed at equal intervals on the outer surface of the rotating shaft. The feeding mechanism is used to send coal materials into the guiding hopper. Subsequently, the materials enter the filtering mechanism. The core of the filtering mechanism is the arc-shaped filter screen. Its special design enables effective separation of materials during filtration. The arc-shaped filter screen is not only arranged to incline downward for the smooth flow of materials, but also has a first motor installed at its upper end. The first motor drives the rotating shaft and the scrapers to rotate. The scrapers scrape inside the arc-shaped filter screen, effectively preventing the clogging of the filter screen holes and ensuring the smooth progress of the filtering and screening.

[0009] As a preferred technical solution, a discharge frame is fixedly installed at the lower end of the arc-shaped filter screen. The external corners of the support frame are all set to be arc-shaped. The discharge frame is added at the lower end of the arc-shaped filter screen. The design of the discharge frame enables the coal materials after filtration and screening to be discharged from the arc-shaped filter screen more smoothly and enter the collecting mechanism. This not only improves the screening efficiency but also ensures the continuity of the screening process. At the same time, the external corners of the support frame are all set to be arc-shaped. This detail treatment also reflects the designer's consideration of the user experience. The arc-shaped corners not only make the whole device look more beautiful.

[0010] As a preferred technical solution, the collecting mechanism includes side plates fixedly installed at one side of the base. Two groups of sliding grooves are opened at the top of the side plates. A collecting frame is slidably connected inside the sliding grooves. The two collecting frames correspond to the position of the discharge frame. The side plates are firmly fixed at one side of the base, providing stable support for the collecting mechanism. Two groups of sliding grooves are opened at the top of the side plates. This design enables the collecting frame to be conveniently slidably connected inside the sliding grooves, realizing the quick installation and disassembly of the collecting frame.

[0011] As a preferred technical solution, the overall cross-sectional shape of the guiding hopper is set as an isosceles trapezoid. The guiding hopper is set as a stainless steel guiding hopper. The overall cross-sectional shape of the guiding hopper is an isosceles trapezoid. This design not only makes the appearance of the guiding hopper more beautiful, but more importantly, it enables the guiding hopper to better adapt to the flow direction of the material when it enters from the feeding mechanism, reduces the resistance of the material during the flowing process, and thus improves the conveying efficiency of the material.

[0012] As a preferred technical solution, the feeding mechanism includes a conveying cylinder. The conveying cylinder is fixedly installed in the middle of the back surface of the guiding hopper. A second motor is fixedly installed at the bottom of the conveying cylinder. The output end of the second motor penetrates through the conveying cylinder and is fixedly installed with a screw conveyor. The screw conveyor is rotationally connected to the inside of the conveying cylinder. The upper end of the conveying cylinder is communicated with the inside of the guiding hopper. A feeding pipe is fixedly installed on the outer side of the lower end of the conveying cylinder. The feeding mechanism mainly includes components such as a conveying cylinder, a second motor, a screw conveyor, and a feeding pipe. The conveying cylinder is fixedly installed in the middle of the back surface of the guiding hopper and is communicated with the inside of the guiding hopper, ensuring the smooth conveying of the material.

[0013] As a preferred technical solution, a feeding hopper is fixedly installed at the top of the feeding pipe. The overall cross-sectional shape of the feeding hopper is set as an isosceles trapezoid. The feeding hopper is fixedly installed at the top of the feeding pipe, and its overall cross-sectional shape is designed as an isosceles trapezoid. This shape not only makes the feeding hopper have a larger opening, facilitating the operator to quickly pour the coal material, but also its inclined side walls can guide the material to smoothly enter the inside of the feeding pipe, reducing the scattering and waste of the material during the pouring process. At the same time, the isosceles trapezoid feeding hopper structure is stable and can bear a large weight of the material, ensuring the stability and safety of the feeding process.

[0014] As a preferred technical solution, the overall cross-sectional shape of the scraper is set as a triangle. The outer side of the scraper is in close connection with the inner wall of the arc-shaped filter screen. The overall cross-sectional shape of the scraper is set as a triangle. This design makes the scraper have a sharp edge, which can better scrape the inner wall of the arc-shaped filter screen, effectively remove the coal particles attached to the filter screen, and prevent the blockage of the filter screen holes. At the same time, the outer side of the scraper is closely connected with the inner wall of the arc-shaped filter screen, ensuring that when the scraper rotates, it can fully cover the surface of the filter screen and clean it without dead angles. This close connection method not only improves the cleaning efficiency but also ensures the thoroughness of the cleaning and extends the service life of the filter screen.

[0015] In summary, the main beneficial effects of the present utility model are as follows:

[0016] First, the device processes the material by feeding, directing the material into the guide bucket, and then discharging it to the arc-shaped filter screen. The inclined filter screen assists in filtering and screening. The apertures of the two sets of filter screens are different, with a large aperture at the upper end and a small aperture at the lower end, so as to achieve classified screening. The screened coal is sent to the collection frame through the discharge frame to achieve efficient classified filtration. During the screening process, the first motor is started to drive the shaft to rotate, and the scraper then scrapes the inside of the filter screen, effectively preventing the filter screen from being blocked and improving the overall filtering and screening efficiency. The device is exquisitely designed and easy to operate, and can significantly improve the quality and efficiency of coal processing. It is an important equipment in the field of coal processing.

[0017] Second, this device realizes efficient coal processing by designing a filtering mechanism. When in use, materials are added from the loading hopper and transported to the conveying barrel through the loading pipe. The second motor is started to drive the auger to rotate, pushing the raw materials in the barrel to be transported upward. The raw materials are then discharged from the top of the conveying barrel into the guide bucket, realizing the design of bottom-up discharge, which greatly facilitates the loading and processing process. This design not only improves the efficiency of coal processing, but also enhances the convenience of the device, making the overall operation simpler and more efficient. Therefore, this device has significant advantages in the field of coal processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the filter mechanism structure of the utility model.

[0022] Figure numerals: 1. base; 2. support frame; 3. filtering mechanism; 31. arc-shaped filter screen; 32. first motor; 33. rotating shaft; 34. scraper; 35. discharge frame; 4. feeding mechanism; 41. conveying cylinder; 42. second motor; 43. auger; 44. feeding pipe; 45. feeding hopper; 5. guide bucket; 6. collecting mechanism; 61. side panel; 62. chute; 63. collecting frame. DETAILED DESCRIPTION

[0023] Example

[0024] refer to Figures 1 to 4, A screening device for coal processing in this embodiment includes a base 1. A support frame 2 is fixedly installed at the top of the base 1. An upper guide hopper 5 is fixedly installed at the upper end of the support frame 2. A feeding mechanism 4 is fixedly installed in the middle at the rear side of the upper guide hopper 5. The output end of the feeding mechanism 4 is communicated with the inside of the upper guide hopper 5. Filtering mechanisms 3 are fixedly installed at equal intervals inside the support frame 2. A collecting mechanism 6 is fixedly installed on one side of the base 1. The top of the collecting mechanism 6 corresponds to the output end of the filtering mechanism 3;

[0025] The filtering mechanism 3 includes an arc-shaped filter screen 31. The arc-shaped filter screen 31 is fixedly installed at equal intervals inside the support frame 2. The arc-shaped filter screen 31 is arranged to slope downward towards the collecting mechanism 6. A first motor 32 is fixedly installed at the upper end of the arc-shaped filter screen 31. The output end of the first motor 32 penetrates through the arc-shaped filter screen 31 and a rotating shaft 33 is fixedly installed. Scrapers 34 are fixedly installed at equal intervals on the outer surface of the rotating shaft 33. The coal materials are fed into the upper guide hopper 5 by the feeding mechanism 4. Then the materials enter the filtering mechanism 3. The core of the filtering mechanism 3 is the arc-shaped filter screen 31. Its special design enables effective separation of the materials during filtering. The arc-shaped filter screen 31 is not only arranged to slope downward for the smooth flow of materials, but also has a first motor 32 installed at its upper end. The first motor 32 drives the rotating shaft 33 and the scrapers 34 to rotate. The scrapers 34 scrape inside the arc-shaped filter screen 31, effectively preventing the blockage of the filter screen holes and ensuring the smooth progress of filtering and screening. At the same time, since the arc-shaped filter screens 31 are arranged at equal intervals and the filter screen apertures at different positions are different, classification screening of the materials is achieved. The screened coal materials fall into the collecting mechanism 6 through the output end of the filtering mechanism 3, realizing the efficient classification collection of coals with different particle sizes. The whole device has a compact structure and is easy to operate, greatly improving the efficiency and quality of coal processing and screening.

[0026] Reference Figures 1 - 4 , A discharge frame 35 is fixedly installed at the lower end of the arc-shaped filter screen 31. The outer edges of the support frame 2 are all set to be arc-shaped. The addition of the discharge frame 35 at the lower end of the arc-shaped filter screen 31 enables the coal materials after filtering and screening to be discharged from the arc-shaped filter screen 31 more smoothly and enter the collecting mechanism 6. This not only improves the screening efficiency but also ensures the continuity of the screening process. At the same time, the outer edges of the support frame 2 are all set to be arc-shaped. This detail treatment also reflects the designer's consideration of the use experience. The arc-shaped edges not only make the whole device look more beautiful, but more importantly, they reduce the potential safety hazards brought by sharp corners, making it safer for operators to maintain and clean the equipment.

[0027] Reference Figures 1 - 3, the collecting mechanism 6 includes side plates 61 which are fixedly installed on one side of the base 1. Two sets of sliding grooves 62 are opened at the top of the side plates 61. A collecting frame 63 is slidably connected inside the sliding grooves 62. The positions of the two collecting frames 63 correspond to that of the discharging frame 35. The side plates 61 are firmly and fixedly installed on one side of the base 1, providing stable support for the collecting mechanism 6. Two sets of sliding grooves 62 are opened at the top of the side plates 61. This design enables the collecting frame 63 to be conveniently slidably connected inside the sliding grooves 62, realizing the quick installation and disassembly of the collecting frame 63. More importantly, the positions of the two collecting frames 63 correspond to that of the discharging frame 35, which means that the coal materials screened by the arc-shaped filter screen 31 can be directly discharged into the corresponding collecting frame 63 through the discharging frame 35. This design not only ensures that the screened coal can accurately enter the collecting frame 63, but also greatly improves the collecting efficiency. In addition, the sliding connection mode of the collecting frame 63 enables the operator to easily move or take out the collecting frame 63, facilitating the further processing or transportation of the collected coal.

[0028] Reference Figures 1 - 4 , the overall cross-sectional shape of the guiding hopper 5 is set as an isosceles trapezoid. The guiding hopper 5 is set as a stainless steel guiding hopper. The overall cross-sectional shape of the guiding hopper 5 is an isosceles trapezoid. This design not only makes the appearance of the guiding hopper 5 more beautiful, but more importantly, it enables the guiding hopper 5 to better adapt to the flow direction of the materials when entering from the feeding mechanism 4, reducing the resistance of the materials during the flowing process, thereby improving the conveying efficiency of the materials. In addition, the guiding hopper 5 is made of stainless steel material, which has excellent corrosion resistance and wear resistance, ensuring that the guiding hopper 5 is not easily damaged during long-term use and extending its service life. At the same time, the surface of the stainless steel guiding hopper is smooth and not easy to adhere to materials, which also further improves the conveying efficiency of the materials and reduces the workload of cleaning and maintenance.

[0029] Reference Figures 1 - 3, the feeding mechanism 4 includes a conveying cylinder 41. The conveying cylinder 41 is fixedly installed in the middle of the back of the guiding hopper 5. At the bottom of the conveying cylinder 41, a second motor 42 is fixedly installed. The output end of the second motor 42 penetrates through the conveying cylinder 41 and is fixedly installed with a screw conveyor 43. The screw conveyor 43 is rotatably connected to the inside of the conveying cylinder 41. The upper end of the conveying cylinder 41 is communicated with the inside of the guiding hopper 5. The outer side of the lower end of the conveying cylinder 41 is fixedly installed with a feeding pipe 44. The feeding mechanism 4 mainly includes components such as the conveying cylinder 41, the second motor 42, the screw conveyor 43, and the feeding pipe 44. The conveying cylinder 41 is fixedly installed in the middle of the back of the guiding hopper 5 and is communicated with the inside of the guiding hopper 5, ensuring the smooth conveying of materials. The second motor 42 is installed at the bottom of the conveying cylinder 41 and is fixedly connected to the screw conveyor 43 through the output end, providing power for the rotation of the screw conveyor 43. The screw conveyor 43 is rotatably connected to the inside of the conveying cylinder 41. When the second motor 42 is started, the screw conveyor 43 starts to rotate, thereby pushing the coal materials in the conveying cylinder 41 upward. The feeding pipe 44 is fixedly installed on the outer side of the lower end of the conveying cylinder 41, and its function is to guide the materials into the inside of the conveying cylinder 41. In actual operation, the operator can add coal materials through the feeding pipe 44 and then start the second motor 42, and the screw conveyor 43 can convey the materials into the guiding hopper 5 to prepare for the subsequent screening work.

[0030] Reference Figures 1 - 3 , a feeding hopper 45 is fixedly installed at the top of the feeding pipe 44. The overall cross-sectional shape of the feeding hopper 45 is set as an isosceles trapezoid. The feeding hopper 45 is fixedly installed at the top of the feeding pipe 44, and its overall cross-sectional shape is designed as an isosceles trapezoid. This shape not only makes the feeding hopper 45 have a larger opening, facilitating the operator to quickly pour coal materials, but also its inclined side walls can guide the materials to smoothly enter the inside of the feeding pipe 44, reducing the scattering and waste of materials during the pouring process. At the same time, the isosceles trapezoid feeding hopper 45 has a stable structure and can bear a large weight of materials, ensuring the stability and safety of the feeding process. In addition, the tight connection between the feeding hopper 45 and the feeding pipe 44 also ensures that the materials can smoothly enter the conveying cylinder 41 and then be pushed by the screw conveyor 43 into the guiding hopper 5 for screening. This screening device for coal processing makes the feeding process more efficient, convenient and stable by adding the design of the feeding hopper 45, further improving the working efficiency and use experience of the entire screening device.

[0031] Reference Figures 1 - 4, the overall cross-sectional shape of the scraper 34 is triangular. The outer side of the scraper 34 is in fitting connection with the inner wall of the arc-shaped filter net 31. The overall cross-sectional shape of the scraper 34 is triangular. This design makes the scraper 34 have a sharp edge, which can better scrape the inner wall of the arc-shaped filter net 31, effectively remove the coal particles attached to the filter net, and prevent the filter net holes from being blocked. At the same time, the outer side of the scraper 34 is tightly in fitting connection with the inner wall of the arc-shaped filter net 31, ensuring that when the scraper 34 rotates, it can fully cover the surface of the filter net and clean it without dead corners. This fitting connection method not only improves the cleaning efficiency but also ensures the thoroughness of cleaning and extends the service life of the filter net. In addition, the triangular scraper 34 design also makes it have good structural strength and stability, can withstand the greater force generated during the cleaning process, and is not easy to deform or damage.

[0032] Principle of use and advantages: After adding materials into the inside of the guiding hopper 5 through feeding and processing, the materials are discharged into the inside of the arc-shaped filter net 31 through the guiding hopper 5. The inclined arc-shaped filter net 31 is used to assist in filtering and screening. During the use process, the aperture diameters of the filter net holes of the two arc-shaped filter nets 31 are different. The aperture diameter of the filter net at the upper end is larger than that of the arc-shaped filter net 31 at the lower end, enabling the overall device to achieve classification screening. At the same time, the coal materials after screening can be discharged into the collection box 63 at the top of the chute 62 through the discharge frame 35 respectively, realizing the function of efficient classification filtration. At the same time, during the filtering and screening process, the first motor 32 can be started to operate, and the rotating shaft 33 is driven to rotate by the first motor 32. By rotating the rotating shaft 33, the scraper 34 can be assisted to scrape inside the arc-shaped filter net 31, avoiding the situation that the filter net holes are blocked during its filtration, and improving the overall filtration and screening efficiency of this equipment;

[0033] By setting the filtering mechanism 3, when this device is in use, the coal can be added into the inside of the feeding hopper 45, and through the assistance of the feeding hopper 45 and the feeding pipe 44 for conveying, the coal can be added into the inside of the conveying cylinder 41. At this time, the second motor 42 is started to operate, and the auger 43 is driven to rotate by the second motor 42. By rotating the auger 43, the raw materials inside the conveying cylinder 41 can be assisted to convey upward and displace. At this time, the materials can be discharged into the inside of the guiding hopper 5 from the top of the conveying cylinder 41, enabling this device to discharge materials from the bottom upward, facilitating the feeding and processing of this device, and improving the overall convenience of use of this device.

Claims

1. A screening device for coal processing, comprising a base, characterized in that: A support frame is fixedly installed on the top of the base, a guide bucket is fixedly installed on the upper end of the support frame, a feeding mechanism is fixedly installed on the middle part of the rear side of the guide bucket, the output end of the feeding mechanism is connected to the inside of the guide bucket, a filtering mechanism is fixedly installed at equal intervals on the inner side of the support frame, a collecting mechanism is fixedly installed on one side of the base, and the top of the collecting mechanism corresponds to the output end of the filtering mechanism; The filtering mechanism includes an arc-shaped filter screen, which is fixedly installed on the inner side of the support frame at equal intervals. The arc-shaped filter screen is arranged to be inclined downward toward the collecting mechanism. A first motor is fixedly installed on the upper end of the arc-shaped filter screen, and a rotating shaft is fixedly installed on the output end of the first motor passing through the arc-shaped filter screen, and scrapers are fixedly installed on the outer surface of the rotating shaft at equal intervals.

2. A screening device for coal processing according to claim 1, characterized in that: A discharge frame is fixedly mounted at the lower end of the arc-shaped filter screen, and the outer edges and corners of the support frame are all arranged in an arc shape.

3. A screening device for coal processing according to claim 2, characterized in that: The collecting mechanism comprises a side plate, which is fixedly mounted on one side of the base. Two groups of slide grooves are provided on the top of the side plate. The inside of the slide grooves is slidably connected with a collecting frame. The positions of the two groups of collecting frames and the discharge frame correspond to each other.

4. A screening device for coal processing according to claim 1, characterized in that: The overall cross-sectional shape of the guide bucket is an isosceles trapezoid, and the guide bucket is configured as a stainless steel guide bucket.

5. A screening device for coal processing according to claim 4, characterized in that: The feeding mechanism includes a conveying cylinder, which is fixedly installed on the middle part of the back side of the guide bucket, and a second motor is fixedly installed on the bottom of the conveying cylinder. An auger is fixedly installed on the output end of the second motor passing through the conveying cylinder, and the auger is rotatably connected to the inside of the conveying cylinder. The upper end of the conveying cylinder is connected to the inside of the guide bucket, and a feeding pipe is fixedly installed on the outer side of the lower end of the conveying cylinder.

6. A screening device for coal processing according to claim 5, characterized in that: A feeding hopper is fixedly installed on the top of the feeding pipe, and the overall cross-sectional shape of the feeding hopper is an isosceles trapezoid.

7. A screening device for coal processing according to claim 1, characterized in that: The overall cross-sectional shape of the scraper is triangular, and the outer side of the scraper is fitted and connected to the inner wall of the arc-shaped filter screen.

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