Multi-stage screening device

Abstract

The utility model relates to the technical field of screening devices, and discloses a multi-stage screening device. According to the screening device, buffering column bearing grooves are fixedly formed in the four corners of the upper surface of the screening device base plate, buffering columns are slidably connected to the inner surfaces of the buffering column bearing grooves, a screening device box is fixedly connected to the upper surfaces of the buffering columns, and screening net bags are obliquely and fixedly installed on the inner surface of the screening device box at equal intervals; grooves corresponding to the screening net bags are formed in the side surface of the screening device box body, a discharging opening is fixedly formed in each groove, the two screening net bags which are obliquely installed at equal intervals can enable the device to screen plastic products of multiple sizes at the same time in the working process, then the plastic products are conveyed into the storage groove through the discharging openings, and meanwhile the device is simple in structure, convenient to maintain and clean and high in practicability. According to the screening device, the working efficiency is greatly improved, and meanwhile the universality is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of screening devices, and specifically relates to a multi-stage screening device. Background Art

[0002] Plastic is a material that is made of natural or synthetic resin as the main component, with various additives added. It can be molded into a certain shape under certain temperature and pressure conditions and keep the shape unchanged at room temperature. Some plastics are pure resins, such as polyethylene, polystyrene, etc., which are called single-component plastics. Plastic products are a general term for daily necessities and industrial products made of plastic as the main raw material, including products made of plastic raw materials such as injection molding and blister molding. Compared with metal, stone, and wood, plastic products have the advantages of low cost and strong plasticity. They are widely used in the national economy. The plastic industry occupies an extremely important position in the world today. For many years, the production of plastic products has developed rapidly around the world. Some plastic particles are inconsistent in size and need to be separated by screening to obtain the required size. The existing screening machine is troublesome to separate and cannot complete multiple separations at one time. If too much material is poured in per unit time, it exceeds the capacity of the top screen to discharge the material, and the material will accumulate on the top screen.

[0003] For example, the patent with publication number CN 210474629 U discloses a multi-stage screening device for plastic products. The utility model includes an upper column, an adjustment plate, a rotating rod, a rotating shaft, a screen plate, a screen mesh, a first unloading plate, a vibrator, a spring rod, a bottom column, a receiving plate and a second unloading plate. The four upper columns are fixedly connected to the outer wall of the adjustment plate on one side, the two ends of the rotating rod are movably connected to the inner wall of the adjustment plate, the outer wall of the rotating shaft is movably connected to the inner wall of the two sides of the adjustment plate, and the outer wall of the screen mesh is fixedly connected to the inner wall of the screen plate. In the utility model, the raw material box is placed and clamped between the two rotating rods, the bottom discharge valve is opened to allow the raw materials to enter the screen plate, so that the screen plate is screened, and the screen plate is vibrated by starting the vibrator to achieve the block screening speed.

[0004] However, the above-mentioned plastic screening device cannot screen plastic products of multiple sizes at the same time, and the working efficiency is low. Utility Model Content

[0005] The purpose of the present application is to provide a multi-stage screening device in order to solve the above-mentioned problem that plastic products of multiple sizes cannot be screened simultaneously.

[0006] The technical solution adopted in the present application is as follows: buffer column bearing grooves are fixedly installed at the four corners of the upper surface of the screening device chassis, the inner surfaces of the buffer column bearing grooves are slidably connected with buffer columns, the upper surface of the buffer columns is fixedly connected with a screening device case, the inner surface of the screening device case has screening net bags fixedly installed obliquely and equidistantly, the side surface of the screening device case is provided with grooves corresponding to the screening net bags, and a drop-off port is fixedly installed in the grooves.

[0007] By adopting the above technical solution, two equidistant and obliquely installed screening net bags can enable the device to screen plastic products of multiple sizes at the same time when working, and then transport the plastic products to the storage trough through the drop port. At the same time, the structure is simple and easy to maintain and clean. Compared with the above-mentioned screening device, it greatly improves the work efficiency and improves the versatility.

[0008] In a preferred embodiment, universal wheels are rotatably mounted on the four corners of the lower surface of the screening device chassis.

[0009] By adopting the above technical solution, the existence of universal wheels makes it easier for the device to be moved, so that Yunsou can get to the workplace, while also reducing transportation pressure and greatly improving the convenience of the device.

[0010] In a preferred embodiment, buffer column bearing grooves are fixedly installed at the four corners of the upper surface of the screening device chassis, the inner surface of the buffer column bearing grooves is fixedly connected to a buffer spring, and the upper surface of the buffer spring is fixedly connected to a buffer column.

[0011] By adopting the above technical scheme, the buffer structure composed of the buffer column bearing groove, the buffer column and the buffer spring has a simple structure and strong stability. It can buffer the vibration generated when the device is started, reduce parts wear, greatly improve the life of parts, and also improve the stability of the device.

[0012] In a preferred embodiment, a slide groove is provided on the side surface of the material storage box, and a material storage trough is slidably installed in the slide groove corresponding to the material drop opening.

[0013] By adopting the above technical solution, the screened plastic products can be taken out by pulling the storage trough outward after the work is completed, which avoids the plastic products from rolling or wearing out during the falling process, greatly reduces the damage rate of the screening, and greatly improves the stability and yield rate of the screening.

[0014] In a preferred embodiment, an oblique feed port is fixedly mounted on the upper surface of the screening device housing.

[0015] By adopting the above technical solution, the existence of the inclined feed port can play a guiding role when putting in the material, and at the same time prevent plastic products from falling directly on the upper surface of the screening net bag, thereby causing wear and even damage to the screening net bag, greatly improving the life of the parts.

[0016] In a preferred embodiment, a rotating shaft is rotatably mounted on the side of the upper surface of the screening device box body and the material storage box body, a material storage box upper cover and a screening device upper cover are fixedly mounted on the side surface of the rotating shaft, and a material storage box upper cover handle is rotatably mounted on the upper surface of the material storage box upper cover.

[0017] By adopting the above technical solution, the upper cover of the material storage box and the upper cover of the screening device can be closed after the material is put in, so as to prevent the vibration of the rotating shaft during the screening process from causing dust to be scattered, thereby affecting the personal health of the staff. At the same time, it also prevents the material from falling from the feeding port, and facilitates the cleaning of the device after the work is completed.

[0018] In a preferred embodiment, a power motor is fixedly installed on the lower surface of the screening device chassis, the side surface of the power motor is rotatably connected to the motor shaft, a vibration bearing is fixedly installed on the side of the motor shaft, the side surface of the vibration bearing is rotatably connected to the vibration shaft, and the upper surface of the vibration shaft is fixedly installed on the lower surface of the screening device box.

[0019] By adopting the above technical solution, the structure composed of the vibration bearing and the connected vibration shaft can allow the power motor to drive the screening device box to reciprocate up and down when starting, so that the material starts to move and can be better screened, which greatly improves the screening efficiency and reduces labor costs.

[0020] In a preferred embodiment, a motor protection shell is fixedly mounted on the upper surface of the screening device chassis, a slide groove is provided on the lower surface of the motor protection shell, and an upper cover of the motor protection shell is slidably mounted on the slide groove.

[0021] By adopting the above technical solution, the shell structure composed of the motor protection shell and the motor protection shell upper cover can well protect the power motor, prevent the power motor from being disturbed by external factors and causing wear and damage, greatly improving the service life of parts, and also facilitating the maintenance and maintenance of the device.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0023] In the present application, two equidistant and obliquely installed screening net bags enable the device to screen plastic products of multiple sizes at the same time when working, and then transport the plastic products to the storage trough through the drop port. At the same time, the structure is simple and easy to maintain and clean. For the above-mentioned screening device, the work efficiency is greatly improved while the versatility is improved. The structure composed of the vibration bearing and the connected vibration shaft can allow the power motor to drive the screening device box to reciprocate up and down when starting, so that the material starts to move, which can be better screened, greatly improving the screening efficiency while reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure in this application;

[0026] Figure 3 This is a schematic diagram of the buffer device in this application;

[0027] Figure 4 For this application Figure 2 A schematic diagram of the enlarged structure of part A.

[0028] Markings in the figure: 1. Screening device chassis; 2. Universal wheel; 3. Buffer column bearing slot; 4. Buffer column; 5. Motor protection housing; 6. Motor protection housing upper cover; 7. Screening device box body; 8. Material storage box body; 9. Material storage trough; 10. Material storage box upper cover; 11. Material storage box upper cover handle; 12. Oblique material inlet; 13. Screening device upper cover; 14. Power motor; 15. Screening net bag; 16. Dropping port; 17. Bottom material storage trough; 18. Buffer spring; 19. Motor shaft; 20. Vibration bearing; 21. Connecting vibration shaft. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Reference Figure 1-4 ,

[0031] Example:

[0032] Reference Figure 1-4, buffer column bearing grooves 3 are fixedly installed at the four corners of the upper surface of the screening device chassis 1, and buffer columns 4 are slidably connected to the inner surface of the buffer column bearing grooves 3. The upper surface of the buffer column 4 is fixedly connected to the screening device box 7, and screening net bags 15 are fixedly installed obliquely and equidistantly on the inner surface of the screening device box 7. A groove is opened on the side surface of the screening device box 7 corresponding to the screening net bag 15, and a drop port 16 is fixedly installed in the groove. Two equidistant and obliquely installed screening net bags 15 can enable the device to screen plastic products of multiple sizes at the same time when working, and then transport the plastic products to the storage slot through the drop port 16. At the same time, the structure is simple, which is convenient for maintenance and cleaning. For the above-mentioned screening device, it greatly improves the work efficiency and versatility.

[0033] Reference Figure 1-4 Universal wheels 2 are rotatably installed at the four corners of the lower surface of the screening device chassis 1. The existence of the universal wheels 2 makes it easy to move the device to the work site, while also reducing transportation pressure and greatly improving the convenience of the device.

[0034] Reference Figure 1-4 , buffer column bearing grooves 3 are fixedly installed at the four corners of the upper surface of the screening device chassis 1, the inner surface of the buffer column bearing groove 3 is fixedly connected with a buffer spring 18, and the upper surface of the buffer spring 18 is fixedly connected with a buffer column 4. The buffer structure composed of the buffer column bearing groove 3, the buffer column 4 and the buffer spring 18 has a simple structure and strong stability. It can buffer the vibration generated when the device is started, reduce the wear of parts, greatly improve the life of parts, and also improve the stability of the device.

[0035] Reference Figure 1-4 A slide groove is provided on the side surface of the storage box 8, and a storage trough 9 is slidably installed in the slide groove corresponding to the drop opening 16. After the work is completed, the storage trough 9 can be pulled outward to take out the screened plastic products, thereby preventing the plastic products from rolling or wearing during the falling process, greatly reducing the damage rate of screening, and greatly improving the stability and yield rate of screening.

[0036] Reference Figure 1-4 An oblique feed port 12 is fixedly installed on the upper surface of the screening device box 7. The existence of the oblique feed port 12 can play a guiding role when putting in materials, and at the same time prevent plastic products from falling directly on the upper surface of the screening net bag 15, thereby causing wear or even damage to the screening net bag 15, thereby greatly improving the life of parts.

[0037] Reference Figure 1-4A rotating shaft is rotatably installed on the side of the upper surface of the screening device box body 7 and the material storage box body 8, and a material storage box upper cover 10 and a screening device upper cover 13 are fixedly installed on the side surface of the rotating shaft. A material storage box upper cover handle 11 is rotatably installed on the upper surface of the material storage box upper cover 10. The material storage box upper cover 10 and the screening device upper cover 13 can be closed after the material is put in, so as to avoid the vibration of the rotating shaft during the screening process causing dust to float, thereby affecting the personal health of the staff, and also prevent the material from falling from the feeding port, and it is also convenient to clean the device after the work is completed.

[0038] Reference Figure 1-4 The lower surface of the screening device chassis 1 is fixedly mounted with a power motor 14, the side surface of the power motor 14 is rotatably connected with a motor shaft 19, the side surface of the motor shaft 19 is fixedly mounted with a vibration bearing 20, the side surface of the vibration bearing 20 is rotatably connected with a vibration shaft 21, and the upper surface of the vibration shaft 21 is fixedly mounted on the lower surface of the screening device box 7. Figure 1-4 The structure composed of the vibration bearing 20 and the connecting vibration shaft 21 can allow the power motor 14 to drive the screening device box 7 to reciprocate up and down when starting, so that the material starts to move, which can be better screened, greatly improving the screening efficiency while reducing labor costs.

[0039] The implementation principle of a multi-stage screening device embodiment of the present application is:

[0040] Buffer column bearing grooves 3 are fixedly installed at the four corners of the upper surface of the screening device chassis 1, and the inner surface of the buffer column bearing groove 3 is slidably connected with a buffer column 4, and the upper surface of the buffer column 4 is fixedly connected with a screening device box 7, and the inner surface of the screening device box 7 is obliquely and equidistantly fixed with screening net bags 15. The side surface of the screening device box 7 is provided with a groove corresponding to the screening net bag 15, and a drop port 16 is fixedly installed in the groove. The two equidistant and obliquely installed screening net bags 15 can enable the device to screen plastic products of multiple sizes at the same time when working, and then transport the plastic products to the storage slot through the drop port 16. At the same time, the structure is simple, which is convenient for maintenance and cleaning. For the above-mentioned screening device, it greatly improves the work efficiency and improves the versatility.

[0041] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-stage screening device, comprising a screening device chassis (1) and a material storage box (8), characterized in that: Buffer column bearing grooves (3) are fixedly installed at the four corners of the upper surface of the screening device chassis (1); the inner surface of the buffer column bearing groove (3) is slidably connected to a buffer column (4); the upper surface of the buffer column (4) is fixedly connected to a screening device box (7); the inner surface of the screening device box (7) is fixedly installed with screening net bags (15) at an oblique and equidistant angle; the side surface of the screening device box (7) is provided with grooves corresponding to the screening net bags (15); a material drop opening (16) is fixedly installed in the grooves.

2. A multi-stage screening device as claimed in claim 1, characterized in that: Universal wheels (2) are rotatably mounted on the four corners of the lower surface of the screening device chassis (1).

3. A multi-stage screening device as claimed in claim 1, characterized in that: A buffer spring (18) is fixedly connected to the inner surface of the buffer column bearing groove (3), and a buffer column (4) is fixedly connected to the upper surface of the buffer spring (18).

4. A multi-stage screening device as claimed in claim 1, characterized in that: A sliding groove is provided on the side surface of the material storage box (8), and a material storage trough (9) is slidably installed in the sliding groove corresponding to the material drop opening (16).

5. A multi-stage screening device as claimed in claim 1, characterized in that: An oblique material inlet (12) is fixedly mounted on the upper surface of the screening device housing (7).

6. A multi-stage screening device as claimed in claim 1, characterized in that: A rotating shaft is rotatably mounted on the side edges of the upper surfaces of the screening device box body (7) and the material storage box body (8); a material storage box upper cover (10) and the screening device upper cover (13) are fixedly mounted on the side surfaces of the rotating shaft; and a material storage box upper cover handle (11) is rotatably mounted on the upper surface of the material storage box upper cover (10).

7. A multi-stage screening device as claimed in claim 1, characterized in that: A power motor (14) is fixedly mounted on the lower surface of the screening device chassis (1), a motor shaft (19) is rotatably connected to the side surface of the power motor (14), a vibration bearing (20) is fixedly mounted on the side surface of the motor shaft (19), a connecting vibration shaft (21) is rotatably connected to the side surface of the vibration bearing (20), and the upper surface of the connecting vibration shaft (21) is fixedly mounted on the lower surface of the screening device housing (7).

8. A multi-stage screening device as claimed in claim 1, characterized in that: A motor protection shell (5) is fixedly mounted on the upper surface of the screening device chassis (1), and a slide groove is provided on the lower surface of the motor protection shell (5), and a motor protection shell upper cover (6) is slidably mounted on the slide groove.

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