Multifunctional classifying screen

Abstract

The application discloses a multifunctional grading screen which comprises a plurality of grading screen material units, a single grading screen material unit comprises a grading screen body which is installed on a grading vibrating hopper, a vibrating frame is arranged below the grading vibrating hopper, the vibrating frame and the grading vibrating hopper are connected through a plurality of elastic connecting plates, a vibrating motor is arranged on the inner wall of the vibrating frame, a material collecting hopper is arranged below the grading screen body, the frame and the vibrating frame are connected through an elastic mechanism one, a discharging vibrating hopper is arranged below the bottom end of the material collecting hopper, the discharging vibrating hopper is installed on an electromagnetic vibrator, the electromagnetic vibrator is connected with the frame through an elastic mechanism two, a grading material box is inserted into the inclined bottom end of the discharging vibrating hopper in the inner cavity, and a grading discharging port is arranged at the bottom of the grading material box. When the material slides along the corresponding grading screen body of the plurality of grading screen material units, the grading and screening of the broken-shell nut material according to the particle size are realized, the screening efficiency is high, and the grading and screening effect of the broken-shell nut is improved.

Description

Technical Field

[0001] This invention relates to the field of material grading and screening production technology, specifically to a multifunctional grading screen. Background Technology

[0002] Nuts are a type of deciduous fruit with a hard shell containing one or more seeds. Examples include chestnuts and almonds. Nuts are the essence of plants, generally rich in nutrients, containing high levels of protein, oils, minerals, and vitamins, and have excellent effects on human growth and development, strengthening the body, and preventing diseases.

[0003] Currently, some small and medium-sized enterprises lack the necessary equipment for grading and screening shelled nuts. The manual screening and removal of impurities from shelled nuts increases processing costs and reduces economic efficiency. While some mechanized nut-screwing and screening equipment is available, it cannot grade nuts by size, resulting in low efficiency. For example, patent CN107087799B, "A Nut Shelling and Screening Machine," discloses a rotating drum screen that initially screens nuts and small nut shells into a vibrating screen. Larger nut shells are drawn in and discharged by a fan. The vibrating screen then performs further screening, with the shelled nuts and shells moving to the discharge port. A suction fan removes the remaining shells, and the nuts slide out through the bottom of the screen. However, during use, the drum screen and air ducts collide with the nut kernels, easily causing damage and resulting in poor sorting. Furthermore, it is only suitable for separating nut kernels into different sizes, limiting its applicability and making it unsuitable for processing nuts of varying sizes. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional grading sieve that can not only separate kernels by size, but also remove the shells mixed in different sizes. Grading before shelling can effectively avoid the situation where the shells removed contain kernels when the kernels are mixed in size, thus greatly improving the sieving effect.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A multifunctional grading sieve, comprising:

[0007] A plurality of grading screening units, wherein a single grading screening unit includes a grading screen body mounted on a grading vibrating hopper, the grading screen bodies mounted on the grading vibrating hopper are arranged in a sequentially inclined manner, and the screen hole diameter of the grading screen bodies in the downward inclined direction gradually increases.

[0008] A vibrating frame is disposed below the grading vibrating hopper, and the vibrating frame and the grading vibrating hopper are connected by multiple elastic connecting plates;

[0009] A vibration motor is installed on the inner wall of the vibration frame;

[0010] A receiving hopper is located below the grading screen body. The receiving hopper is fixedly installed on the frame. The frame and the vibrating frame are connected by an elastic mechanism.

[0011] A feeding vibrating bucket is located below the bottom opening of the receiving bucket. The feeding vibrating bucket is mounted on an electromagnetic vibrator, which is connected to the frame via an elastic mechanism.

[0012] A grading box, with its inner cavity having an inclined bottom end inserted into the feeding vibrating hopper, and a grading discharge port provided at the bottom of the grading box;

[0013] The screen material box has an inclined bottom end inserted into the grading vibrating hopper in its inner cavity, and the bottom of the screen material box is provided with a screen material discharge port.

[0014] As a further aspect of the present invention, it also includes an exhaust and impurity removal system, wherein the exhaust and impurity removal system includes an air valve connected to the top of the grading box, and the end of the air valve away from the grading box is connected to the impurity removal air duct through a branch pipe.

[0015] As a further aspect of the present invention: the exhaust and impurity removal system includes a branch pipe connected to the top of the material box on the screen, and the end of the branch pipe away from the material box on the screen is connected to the impurity removal air duct.

[0016] As a further embodiment of the present invention: an elastic frame is provided below the grading screen body, the elastic frame is installed inside the grading vibrating hopper, and a plurality of protective rods are spaced apart on the elastic frame, the protective rods being staggered along the length and width directions of the grading vibrating hopper.

[0017] As a further aspect of the present invention: the elastic frame is provided with a plurality of elastic balls for elastic impact collision with the grading screen body, and the diameter of the elastic balls is larger than the gap distance between adjacent protective bars.

[0018] As a further aspect of the present invention: multiple baffles are spaced apart on the vibrating frame, and the cavities between adjacent baffles form the guiding cavity of a single grading and screening unit.

[0019] As a further aspect of the present invention: the elastic mechanism includes four rubber spring seats disposed on the frame, and the frame and the vibration frame are connected through the rubber spring seats.

[0020] As a further aspect of the present invention: the elastic mechanism 2 includes four rubber spring seats 2 disposed on the frame, and the frame and the electromagnetic vibrator are connected through the rubber spring seats 2.

[0021] The beneficial effects of this invention are:

[0022] (1) When in use, the material is added to the inclined top of the graded vibrating hopper, so that the material slides down to several graded screening units. When the material slides down along the graded screen body corresponding to several graded screening units, the shelled nut material is graded and screened according to particle size. The screening efficiency is high and it is beneficial to improve the graded screening effect of shelled nuts.

[0023] (2) This multi-functional grading screen adopts a suction and impurity removal system, so that the impurities are drawn into the impurity removal air duct by the negative pressure airflow, further improving the sorting effect of the grading box and the screen material box, removing impurities, and is easy to operate.

[0024] (3) Multiple elastic balls are provided in the elastic frame for elastic impact collision of the grading screen body, so that the elastic balls can bounce and collide with the grading screen body irregularly. The elastic balls can easily collide with the clogging material in the screen hole of the grading screen body, thereby preventing the screen hole of the grading screen body from clogging. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention in one direction;

[0027] Figure 2 This is a schematic diagram of the structure in another direction of the present invention;

[0028] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0029] Figure 4 This is a schematic diagram of the vibration feeding of a single grading screening unit of the present invention.

[0030] In the diagram: 1. Grading vibrating hopper; 2. Grading screen body; 3. Vibrating frame; 4. Elastic connecting plate; 5. Vibrating motor; 6. Frame; 7. Receiving hopper; 8. Discharge vibrating hopper; 9. Electromagnetic vibrator; 10. Grading material box; 11. Grading discharge port; 12. Oversize material box; 13. Oversize material discharge port; 14. Impurity removal air duct; 15. Branch pipe one; 16. Branch pipe two; 17. Air valve; 18. Elastic frame; 19. Protective rod; 20. Elastic ball; 21. Baffle; 22. Rubber spring seat one; 23. Rubber spring seat two. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention; in the description of this invention, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] Please see Figures 1-3 As shown, this invention is a multifunctional grading screen, comprising several grading and screening units, a vibrating frame 3, a vibrating motor 5, a receiving hopper 7, a discharging vibrating hopper 8, a grading material box 10, and an over-screen material box 12. Each grading and screening unit includes a grading screen body 2 mounted on a grading vibrating hopper 1. The grading screen bodies 2 on the grading vibrating hopper 1 are arranged sequentially at an incline, with the screen aperture diameter gradually increasing in the downward-inclining direction. The vibrating frame 3 is positioned below the grading vibrating hopper 1, and the vibrating frame 3 is connected to the grading vibrating hopper 1 by multiple elastic connecting plates 4. The vibrating motor 5 is mounted on the inner wall of the vibrating frame 3. The receiving hopper 7 is located below the grading screen body 2 and is fixedly installed on the frame 6. The frame 6 and the vibrating frame 3 are connected by an elastic mechanism. The discharging vibrating hopper 8 is located below the bottom end of the receiving hopper 7 and is installed on the electromagnetic vibrator 9. The electromagnetic vibrator 9 is connected to the frame 6 through an elastic mechanism. The grading box 10 has an inclined bottom end inserted into the discharging vibrating hopper 8 in its inner cavity. The bottom of the grading box 10 is provided with a grading discharge port 11. The oversize material box 12 has an inclined bottom end inserted into the grading vibrating hopper 1 in its inner cavity. The bottom of the oversize material box 12 is provided with an oversize material discharge port 13.

[0034] During the shelling and sorting process, the material is fed to the inclined top of the grading vibrating hopper 1, causing it to slide downwards to several grading screening units. As the material slides down the corresponding grading screen 2, the diameter of the screen holes on the grading screen 2 gradually increases in the downward-sloping direction. This allows the grading screens to sequentially sort out materials with progressively increasing particle sizes. Materials that meet the particle size requirements are then discharged. The material screened by a single grading screening unit enters the receiving hopper 7 and the discharging vibrating hopper 8. The electromagnetic vibrator 9 drives the discharging vibrating hopper 8 to vibrate and discharge the material, causing the corresponding grading particles to slide into the grading box 10 until they are discharged from the grading discharge port 11. This process achieves grading and screening of the shelled nuts by particle size, resulting in high screening efficiency and improved grading and screening effects. The material that is finally screened by the grading vibrating hopper 1 can slide into the screen material box 12. Material exceeding the particle size separated by several grading screening units is discharged through the screen material discharge port 13, making the operation convenient.

[0035] In this multi-functional grading screen structure, the grading vibrating hopper 1 and the vibrating frame 3 are connected by several elastic connecting plates 4, and the vibrating frame 3 and the frame 6 are elastically connected by an elastic mechanism. Under the action of the vibrating motor 5 driving the vibrating frame 3, the grading vibrating hopper 1 vibrates to add materials for grading and screening, thereby improving the efficiency of material grading and screening and making operation convenient. When the graded and screened materials enter the feeding vibrating hopper 8, the feeding vibrating hopper 8 is driven by the electromagnetic vibrator 9 to vibrate and drop the materials, so that the corresponding graded and screened granular materials slide into the grading box 10 until they are discharged from the grading discharge port 11.

[0036] In this specific implementation, such as Figures 1-2 As shown, it also includes an exhaust and impurity removal system. The exhaust and impurity removal system includes an air valve 17 connected to the top of the grading box 10. The end of the air valve 17 away from the grading box 10 is connected to the impurity removal air duct 14 through a branch pipe 16. Each grading screening unit corresponds to one grading box 10. When materials that meet its sorting particle size enter the grading box 10, the exhaust and impurity removal system uses negative pressure to perform air separation and impurity removal on the grading materials entering the grading box 10. This allows impurities to be drawn into the air valve 17 with the negative pressure airflow and then transported by the branch pipe 16 into the impurity removal air duct 14, further improving the sorting effect of the grading box 10, removing impurities, and discharging and storing the graded and screened materials. In addition, the air valve 17 can adjust the exhaust volume according to the specific gravity of the material in the corresponding grading box 10. The air volume varies depending on the grading particle size of the material in the corresponding grading box 10, and can be adjusted by the air valve 17.

[0037] Furthermore, the exhaust and impurity removal system includes a branch pipe 15 connected to the top of the over-screen material box 12. The end of the branch pipe 15 away from the over-screen material box 12 is connected to the impurity removal air duct 14. When materials exceeding the particle size separated by several grading screening units slide into the over-screen material box 12, the exhaust and impurity removal system can also be used for negative pressure extraction, so that the final over-screen material is air-separated to remove impurities. This allows impurities to be drawn into the branch pipe 15 with the negative pressure airflow and then discharged into the impurity removal air duct 14, further improving the sorting effect of the over-screen material box 12, removing impurities, and discharging and storing materials exceeding the grading screening particle size.

[0038] In this specific implementation, such as Figure 4 As shown, an elastic frame 18 is provided below the grading screen body 2. The elastic frame 18 is installed inside the grading vibrating hopper 1, and multiple protective rods 19 are spaced apart on the elastic frame 18. The protective rods 19 are staggered along the length and width of the grading vibrating hopper 1. During the process of the material falling through the grading screen body 2, the material that has obtained the grading and screening particle size enters the elastic frame 18. Under the action of the staggered protective rods 19, the elastic balls 20 placed inside the elastic frame 18 are prevented from falling. At the same time, the elastic balls 20 are easily agitated by the protective rods 19.

[0039] Furthermore, such as Figure 4 As shown, the elastic frame 18 is provided with multiple elastic balls 20 for elastic impact collision with the grading screen body 2. The diameter of the elastic balls 20 is larger than the gap distance between adjacent protective bars 19. During the vibration and material discharge process of the grading vibrating hopper 1, the material is easy to block the screen holes of the grading screen body 2. The elastic balls 20 can bounce between the grading screen body 2 and the protective bars 19, so that the elastic balls 20 can bounce and collide with the grading screen body 2 irregularly. The elastic balls 20 can easily collide with the material blocking the screen holes of the grading screen body 2, thereby preventing the screen holes of the grading screen body 2 from being blocked.

[0040] In this specific implementation, such as Figure 4 As shown, multiple baffles 21 are spaced apart on the vibrating frame 3. The cavities between adjacent baffles 21 form the guiding cavity of a single grading and screening unit. During the process of the material of the grading and screening particle size being fed into the receiving hopper 7 through the vibrating frame 3, in order to avoid the vibration and displacement of the material screened by adjacent grading and screening units, the guiding cavity formed by the adjacent baffles 21 effectively solves this problem and avoids the mixing and falling of the material screened by adjacent grading units.

[0041] In this specific implementation, such as Figure 1 As shown, the elastic mechanism includes four rubber spring seats 22 mounted on the frame 6, and the frame 6 and the vibration frame 3 are connected by the rubber spring seats 22. The frame 6 and the vibration frame 3 are connected by the rubber spring seats 22 to ensure the vibration of the vibration frame 3 is stable.

[0042] In this specific implementation, such as Figure 1 As shown, the elastic mechanism 2 includes four rubber spring seats 23 mounted on the frame 6, and the frame 6 and the electromagnetic vibrator 9 are connected through the rubber spring seats 23. The frame 6 and the electromagnetic vibrator 9 are connected through the rubber spring seats 23 to ensure the vibration stability of the electromagnetic vibrator 9.

[0043] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A multi-functional classifying screen, characterized by, The utility model relates to a kind of grading screening units, including: Several grading screening units, single the grading screening unit including grading screen body (2) is installed on grading vibrating hopper (1), the grading screen body (2) of being provided on the grading vibrating hopper (1) is sequentially arranged obliquely, and the screen hole diameter of the grading screen body (2) in obliquely downward direction is gradually increased in size setting; Vibration frame (3), provided below the grading vibrating hopper (1), the vibration frame (3) is connected between the grading vibrating hopper (1) by multiple elastic connecting plates (4); Vibration motor (5), provided on the inner wall of the vibration frame (3); Material collecting hopper (7), provided below the grading screen body (2), the material collecting hopper (7) is fixedly installed on rack (6), the rack (6) is connected between the vibration frame (3) by elastic mechanism one. Discharging vibrating hopper (8), provided below the bottom end of the material collecting hopper (7), the discharging vibrating hopper (8) is installed on electromagnetic vibrator (9), the electromagnetic vibrator (9) is connected the rack (6) by elastic mechanism two. Grading material box (10), the inclined bottom end of the discharging vibrating hopper (8) is inserted into the inner cavity of the grading material box (10), and the bottom of the grading material box (10) is provided with grading discharge port (11). Screened material box (12), the inclined bottom end of the grading vibrating hopper (1) is inserted into the inner cavity of the screened material box (12), and the bottom of the screened material box (12) is provided with screened material discharge port (13). It also includes a dust removal system, the dust removal system includes air valve (17) connected to the top of the grading material box (10), the air valve (17) is connected to the dust removal pipe (14) by branch pipe two (16) away from the grading material box (10). The dust removal system includes branch pipe one (15) connected to the top of the screened material box (12), and the branch pipe one (15) is connected to the dust removal pipe (14) away from the screened material box (12). The bottom of the grading screen body (2) is provided with elastic frame (18), the elastic frame (18) is installed in the grading vibrating hopper (1), and a plurality of protective rods (19) are spaced apart on the elastic frame (18), and the protective rods (19) are staggered along the length and width directions of the grading vibrating hopper (1).

2. A multi-functional grading screen according to claim 1, wherein The elastic frame (18) is provided with a plurality of elastic balls (20) for elastic impact collision with the grading screen body (2), and the diameter of the elastic ball (20) is larger than the gap distance between adjacent protective rods (19).

3. The multi-functional grading screen of claim 1, wherein, A plurality of baffles (21) are spaced apart on the vibration frame (3), and the cavities between adjacent baffles (21) form a guide cavity of a single grading screening unit.

4. The multi-functional classifying screen according to claim 1, wherein, The four rubber spring seats one (22) of the elastic mechanism one are provided on the rack (6), and the rack (6) and the vibration frame (3) are connected by the rubber spring seat one (22).

5. The multi-functional classifying screen according to claim 1, wherein The four rubber spring seats (23) of the elastic mechanism II are arranged on the frame (6), and the frame (6) and the electromagnetic vibrator (9) are connected through the rubber spring seats (23).

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