Multi-size screening device for granular compound fertilizer

Abstract

The utility model discloses a granular compound fertilizer multi-size screening device, which relates to the technical field of screening equipment and comprises a main frame, and a first-stage screening plate, a second-stage screening plate and a third-stage screening plate are sequentially arranged in the main frame from top to bottom. Screening covers are arranged on the upper surfaces of the first-stage screening plate, the second-stage screening plate and the third-stage screening plate, discharging covers are arranged on the side walls of the screening covers, and blanking covers are arranged on the lower surfaces of the first-stage screening plate, the second-stage screening plate and the third-stage screening plate; supporting plates are arranged in the main frame and located at the lower ends of the first-stage screening plate, the second-stage screening plate and the third-stage screening plate, and vibrating springs are arranged between the supporting plates and the first-stage screening plate and between the supporting plates and the second-stage screening plate and between the supporting plates and the third-stage screening plate. Vibrators are arranged on the lower surfaces of the first-stage screening plate, the second-stage screening plate and the third-stage screening plate, the whole screening device occupies smaller space of a production workshop, and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically to a multi-size screening device for granular compound fertilizer. Background Technology

[0002] Granular compound fertilizer refers to a fertilizer product made into granules by chemical synthesis or physical mixing of two or more nutrients such as nitrogen, phosphorus, and potassium. Compared with single-element fertilizers, compound fertilizers have advantages such as balanced nutrients, convenient application, and long-lasting effects. Granular compound fertilizer screening equipment is a key piece of equipment in fertilizer production, mainly used to classify the granulated fertilizer according to particle size. This equipment typically uses a vibrating screen or drum screen structure, separating the granules into three categories: large particles, qualified products, and fine powder through multiple layers of screens. Traditional multi-size screening methods for granular compound fertilizer require feeding the granules sequentially into multiple screening devices to separate them into various particle sizes for output. This overall screening device occupies a large space in the production workshop and has relatively low screening efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-size screening device for granular compound fertilizer, so as to solve the problems mentioned in the background art of the traditional multi-size screening method for granular compound fertilizer, which requires the granular compound fertilizer to be fed into multiple screening devices in sequence to screen the granular compound fertilizer into particles of various sizes and output them to the outside. The overall screening device occupies a large space in the production workshop and has low screening efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-size sieving device for granular compound fertilizer, comprising a main frame, wherein a primary sieving plate, a secondary sieving plate, and a tertiary sieving plate are arranged sequentially from top to bottom inside the main frame; a sieving hood is provided on the upper surface of each of the primary, secondary, and tertiary sieving plates; a discharge hood is provided on the side wall of each sieving hood; a discharge hood is provided on the lower surface of each of the primary, secondary, and tertiary sieving plates at a position corresponding to the sieving hood; a sealing flexible connection is provided between the inner surface of the sieving hood and the inner surface of the discharge hood; a support plate is provided inside the main frame at the lower end of each of the primary, secondary, and tertiary sieving plates; a vibration spring is provided between the support plate and each of the primary, secondary, and tertiary sieving plates; and a vibrator is provided on the lower surface of each of the primary, secondary, and tertiary sieving plates.

[0005] Preferably, the primary screening plate, the secondary screening plate, and the tertiary screening plate are all provided with sieve holes, and the diameter of the sieve holes on the primary screening plate, the secondary screening plate, and the tertiary screening plate decreases sequentially. A dust cover is provided at the middle position of the lower surface of the primary screening plate, the secondary screening plate, and the tertiary screening plate, and the vibrator is disposed inside the dust cover.

[0006] Preferably, a support beam is provided on the side wall of the main frame at a position corresponding to the support plate, and the support plate is fixedly connected to the support beam.

[0007] Preferably, a through groove is provided in the middle of the support plate, and the sealing flexible connection passes through the support plate through the through groove.

[0008] Preferably, the discharge hood extends to the outside of the main frame.

[0009] Compared with the prior art, the beneficial effects of this utility model are: it replaces the traditional multi-size screening method of granular compound fertilizer, and performs multi-size corresponding screening through an integrated screening device, and outputs the corresponding size of compound powder particles. It is no longer necessary to feed granular compound fertilizer into multiple screening devices in sequence. The integrated screening device occupies less space in the production workshop and improves screening efficiency. Attached Figure Description

[0010] Figure 1 This is an isometric view of the main structure of this utility model;

[0011] Figure 2 This is a front sectional view of the main structure of this utility model;

[0012] Figure 3 This is a front view schematic diagram of the main structure of this utility model;

[0013] Figure 4 This is a top sectional view of the main structure of this utility model.

[0014] In the diagram: 1-Main frame, 2-First-stage screening plate, 3-Second-stage screening plate, 4-Third-stage screening plate, 5-Screening hood, 6-Discharge hood, 7-Drop hood, 8-Sealed flexible connection, 9-Support plate, 10-Vibration spring, 11-Vibrator, 12-Screen hole, 13-Dust cover, 14-Support beam, 15-Through groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a multi-size screening device for granular compound fertilizer, including a main frame 1. Inside the main frame 1, from top to bottom, are arranged a primary screening plate 2, a secondary screening plate 3, and a tertiary screening plate 4. Screening covers 5 are provided on the upper surfaces of the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4. Discharge covers 6 are provided on the side walls of the screening covers 5. The lower surfaces of the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 are positioned corresponding to the screening covers 5. The screen hood 7 is provided with a sealing flexible connection 8 between the inner surface of the screen hood 5 and the inner surface of the screen hood 7. The main frame 1 is provided with a support plate 9 at the lower end of the primary screen plate 2, the secondary screen plate 3 and the tertiary screen plate 4. A vibration spring 10 is provided between the support plate 9 and the primary screen plate 2, the secondary screen plate 3 and the tertiary screen plate 4. A vibrator 11 is provided on the lower surface of the primary screen plate 2, the secondary screen plate 3 and the tertiary screen plate 4.

[0017] In use, a support plate 9 is installed on the outside of the main frame 1, dividing the interior of the main frame 1 into four spaces. The primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 are sequentially installed in the three upper spaces. The primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 are elastically connected to the upper ends of the corresponding support plates 9 by vibration springs 10. A vibrator 11 is installed at the lower end of the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4, causing the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 to vibrate under the support of the vibration springs 10. Screening hoods 5 are installed at the upper ends of the primary screening plate 2, secondary screening plate 3, and tertiary screening plate 4. The compound fertilizer particles to be screened reciprocate inside the screening hoods 5. Particles that do not pass the screening after passing through the primary screening plate 2, secondary screening plate 3, and tertiary screening plate 4 are discharged to the outside through the discharge hood 6. The particles that pass the screening fall through the drop hood 7 to the corresponding secondary screening plate 3 and tertiary screening plate 4 below. The primary screening plate 2, secondary screening plate 3, and tertiary screening plate 4 are connected in sequence by a sealing flexible connection 8 to reduce compound fertilizer dust.

[0018] The primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 are all provided with sieve holes 12. The diameter of the sieve holes 12 on the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 decreases sequentially. A dust cover 13 is provided at the middle position of the lower surface of the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4. The vibrator 11 is installed inside the dust cover 13. By providing sieve holes 12 of different sizes on the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4, the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 can screen compound fertilizer granules according to different particle sizes. The dust cover 13 is provided at the lower end of the primary screening plate 2, the secondary screening plate 3, and the tertiary screening plate 4 to protect the vibrator 11 and reduce the impact of dust on the vibrator 11.

[0019] A support beam 14 is provided on the side wall of the main frame 1 at a position corresponding to the support plate 9. The support plate 9 is fixedly connected to the support beam 14. The support beam 14 is provided on the side wall of the main frame 1, and the support plate 9 is fixedly connected to the interior of the main frame 1 through the support beam 14.

[0020] A through groove 15 is provided in the middle of the support plate 9. The sealing flexible connection 8 passes through the support plate 9 through the through groove 15. The diameter of the through groove 15 is larger than the outer diameter of the sealing flexible connection 8, so as to leave space for the sealing flexible connection 8 to vibrate.

[0021] The discharge hood 6 extends to the outside of the main frame 1, and can smoothly output particles that have not passed the screening.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-size screening device for granular compound fertilizer, characterized in that: The system includes a main frame (1), inside which a primary screening plate (2), a secondary screening plate (3), and a tertiary screening plate (4) are arranged sequentially from top to bottom. A screening hood (5) is provided on the upper surface of each of the primary screening plate (2), the secondary screening plate (3), and the tertiary screening plate (4). A discharge hood (6) is provided on the side wall of each screening hood (5). A discharge hood (7) is provided on the lower surface of each of the primary screening plate (2), the secondary screening plate (3), and the tertiary screening plate (4) at a position corresponding to the screening hood (5). A sealing flexible connection (8) is provided between the inner surface of the main frame (1) and the inner surface of the material discharge hood (7). A support plate (9) is provided inside the main frame (1) and at the lower end of the first-stage screening plate (2), the second-stage screening plate (3) and the third-stage screening plate (4). A vibration spring (10) is provided between the support plate (9) and the first-stage screening plate (2), the second-stage screening plate (3) and the third-stage screening plate (4). A vibrator (11) is provided on the lower surface of the first-stage screening plate (2), the second-stage screening plate (3) and the third-stage screening plate (4).

2. The granular compound fertilizer multi-size screening device according to claim 1, characterized in that: The primary screening plate (2), the secondary screening plate (3) and the tertiary screening plate (4) are all provided with sieve holes (12). The diameter of the sieve holes (12) on the primary screening plate (2), the secondary screening plate (3) and the tertiary screening plate (4) decreases sequentially. A dust cover (13) is provided at the middle position of the lower surface of the primary screening plate (2), the secondary screening plate (3) and the tertiary screening plate (4). The vibrator (11) is set inside the dust cover (13).

3. The granular compound fertilizer multi-size screening device according to claim 1, characterized in that: The main frame (1) has a support beam (14) on its side wall and at a position corresponding to the support plate (9), and the support plate (9) is fixedly connected to the support beam (14).

4. The granular compound fertilizer multi-size screening device according to claim 1, characterized in that: A through groove (15) is provided in the middle of the support plate (9), and the sealing flexible connection (8) passes through the support plate (9) through the through groove (15).

5. The multi-size screening device for granular compound fertilizer according to claim 1, characterized in that: The discharge hood (6) extends to the outside of the main frame (1).

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