Classified screening device for compound fertilizer particles

Abstract

The utility model discloses a compound fertilizer particle grading screening device, which relates to the technical field of compound fertilizer production equipment, and comprises support frames, a main shaft rotatably connected between the two support frames, a first-stage roller screen arranged on the main shaft, a second-stage roller screen arranged outside the first-stage roller screen, a third-stage roller screen arranged outside the second-stage roller screen, and a third-stage roller screen arranged outside the third-stage roller screen. Discharging spirals are arranged on the inner surfaces of the first-stage roller screen, the second-stage roller screen and the third-stage roller screen, a protective cover is arranged between the two supporting frames and on the outer surface of the third-stage roller screen, and a discharging groove is formed in the lower end of the protective cover; baffles are arranged on the outer edges of the left side ends of the first-stage roller screen, the second-stage roller screen and the third-stage roller screen, a feeding pipe is arranged at the right side end of the protective cover in a penetrating mode, and the feeding pipe extends into the first-stage roller screen. Screening operation is conducted through the multiple stages of roller screens, the grading screening effect is guaranteed, the amplitude of vibration generated during working is smaller, and the screening efficiency is improved. And the noise during working is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compound fertilizer production equipment, in particular to a compound fertilizer particle grading and screening device. Background Art

[0002] The compound fertilizer particle grading and screening device is a device used to grade and screen the particle size of compound fertilizer products. This screening device is usually used in fertilizer production lines to help improve product quality and production efficiency. The compound fertilizer particle grading and screening device uses vibration or rotation to screen the particles on the screen or screen plate, thereby separating particles of different sizes. It is usually divided into two stages: coarse screening and fine screening, to ensure that oversized or undersized particles can be screened. Traditional grading and screening devices are usually multi-stage linear vibration structures. Due to the working principle of linear vibration, they will produce large amplitude vibrations during operation, accompanied by large noise. Utility Model Content

[0003] The purpose of the utility model is to provide a compound fertilizer particle grading and screening device to solve the problem that the traditional grading and screening device proposed in the above background technology is usually a linear vibration structure with a multi-stage design. Due to the working principle of linear vibration, it will generate large-amplitude vibration during operation and be accompanied by large noise.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a compound fertilizer particle grading and screening device, comprising a support frame, the number of the support frames is two, a main shaft is rotatably connected between the two support frames, a first-level roller screen is arranged on the main shaft, a second-level roller screen is arranged outside the first-level roller screen, a third-level roller screen is arranged outside the second-level roller screen, the right sides of the first-level roller screen, the second-level roller screen and the third-level roller screen are arranged correspondingly, a sealing plate is arranged between the right sides of the first-level roller screen, the left sides of the first-level roller screen, the second-level roller screen and the third-level roller screen are shortened successively, the inner surfaces of the first-level roller screen, the second-level roller screen and the third-level roller screen are all provided with a discharging spiral, a protective cover is arranged between the two support frames and on the outer surface of the third-level roller screen, a discharging trough is opened at the lower end of the protective cover, a baffle is arranged at the outer edge of the left side end of the first-level roller screen, the second-level roller screen and the third-level roller screen are all provided, and a feed pipe is penetrated through the right side end of the protective cover, and the feed pipe extends into the interior of the first-level roller screen.

[0005] Preferably, the outer surfaces of the first-stage roller screen, the second-stage roller screen and the third-stage roller screen are all provided with support frames, and support rods are provided between the first-stage roller screen and the main shaft, between the second-stage roller screen and the first-stage roller screen, and between the third-stage roller screen and the second-stage roller screen.

[0006] Preferably, partitions are provided at positions inside the discharge trough corresponding to the baffles, and the inside of the discharge trough is divided into a primary discharge port, a secondary discharge port, a tertiary discharge port and a quaternary discharge port by the partitions.

[0007] Preferably, a bearing is provided between the upper end of the support frame and the main shaft, the main shaft is rotatably connected to the two support frames through the bearing, and a support seat is provided at the lower end of the two support frames.

[0008] Preferably, a through opening is provided at a middle position of the sealing plate corresponding to the position of the feeding pipe, and the feeding pipe passes through the sealing plate through the through opening.

[0009] Compared with the prior art, the utility model has the following beneficial effects: it replaces the traditional multi-stage linear vibration structure grading screening device, performs screening operations by setting up multi-stage rolling screens, ensures the grading screening effect, replaces the linear vibration screening device, generates a smaller vibration amplitude during operation, and reduces noise during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an axonometric drawing of the main structure of the utility model;

[0011] Figure 2 It is an axonometric cross-sectional view of the main structure of the utility model;

[0012] Figure 3 This is a front cross-sectional view of the main structure of the utility model;

[0013] Figure 4 It is a schematic diagram of the main structure of the utility model;

[0014] Figure 5 It is a right side schematic diagram of the main structure of the utility model.

[0015] In the figure: 1-support frame, 2-main shaft, 3-first-level roller screen, 4-second-level roller screen, 5-third-level roller screen, 6-sealing plate, 7-discharging screw, 8-protective cover, 9-discharging chute, 10-baffle, 11-feeding pipe, 12-support frame, 13-support rod, 14-partition, 15-first-level discharge port, 16-second-level discharge port, 17-third-level discharge port, 18-fourth-level discharge port, 19-bearing, 20-support seat, 21-through port. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-5 The utility model provides a compound fertilizer particle grading and screening device, including a support frame 1, the number of the support frames 1 is two, a main shaft 2 is rotatably connected between the two support frames 1, a primary roller screen 3 is arranged on the main shaft 2, a secondary roller screen 4 is arranged outside the primary roller screen 3, a tertiary roller screen 5 is arranged outside the secondary roller screen 4, the right sides of the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5 are correspondingly arranged, a sealing plate 6 is arranged between the right sides of the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5, the primary roller screen 3 The left sides of the secondary roller screen 4 and the tertiary roller screen 5 are shortened successively, the inner surfaces of the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5 are all provided with a discharging screw 7, a protective cover 8 is provided between the two support frames 1 and on the outer surface of the tertiary roller screen 5, a discharging trough 9 is opened at the lower end of the protective cover 8, a baffle 10 is provided at the outer edge of the left sides of the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5, a feeding pipe 11 is penetrated at the right end of the protective cover 8, and the feeding pipe 11 extends into the interior of the primary roller screen 3.

[0018] When in use, the external power is transmitted to the main shaft 2 through the transmission device, so that the main shaft 2 rotates between the two support frames 1, thereby driving the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5 to rotate, and a protective cover 8 is arranged outside the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5 to protect the entire equipment and reduce the diffusion of dust. The material to be graded and screened is input into the first roller screen 3 through the feed pipe 11, and a sealing plate 6 is arranged on the right end of the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5 to prevent the material from falling from the right end of the primary roller screen 3, the secondary roller screen 4 and the tertiary roller screen 5. A discharging screw 7 is arranged inside the first roller screen 3, the second roller screen 4 and the third roller screen 5, so that the material moves toward the left side of the first roller screen 3, the second roller screen 4 and the third roller screen 5 while the first roller screen 3, the second roller screen 4 and the third roller screen 5 are rotating, and while moving, the material is graded and screened by the first roller screen 3, the second roller screen 4 and the third roller screen 5, and a baffle 10 is arranged on the left side of the first roller screen 3, the second roller screen 4 and the third roller screen 5, and the baffle 10 is used to divert the screened materials of different levels on the left side of the first roller screen 3, the second roller screen 4 and the third roller screen 5, and the graded and screened materials after diversion are output to the outside through the discharging trough 9.

[0019] The outer surfaces of the first-stage roller screen 3, the second-stage roller screen 4 and the third-stage roller screen 5 are all provided with a supporting frame 12, and support rods 13 are all provided between the first-stage roller screen 3 and the main shaft 2, between the second-stage roller screen 4 and the first-stage roller screen 3, and between the third-stage roller screen 5 and the second-stage roller screen 4. By arranging the supporting frame 12 outside the first-stage roller screen 3, the second-stage roller screen 4 and the third-stage roller screen 5, the overall strength of the first-stage roller screen 3, the second-stage roller screen 4 and the third-stage roller screen 5 is ensured, and by arranging the supporting stem 13, the first-stage roller screen 3, the second-stage roller screen 4 and the third-stage roller screen 5 are connected to the main shaft 2 into a whole.

[0020] Partitions 14 are provided at positions inside the discharge trough 9 corresponding to the baffles 10. The interior of the discharge trough 9 is divided into a primary discharge port 15, a secondary discharge port 16, a tertiary discharge port 17 and a quaternary discharge port 18 by the partitions 14. By arranging the partitions 14 inside the discharge trough 9 and correspondingly arranging the partitions 14 and the baffles 10, different levels of screened materials are diverted, and different levels of screened materials are diverted through the primary discharge port 15, the secondary discharge port 16, the tertiary discharge port 17 and the quaternary discharge port 18 and then output to the outside.

[0021] A bearing 19 is provided between the upper end of the support frame 1 and the main shaft 2, and the main shaft 2 is rotatably connected to the two support frames 1 through the bearing 19. A support seat 20 is provided at the lower end of the two support frames 1. The main shaft 2 is rotatably connected between the two support frames 1 through the bearing 19, and a support seat 20 is provided at the lower end of the support frame 1 to ensure the placement stability of the support frame 1 on the ground.

[0022] A through opening 21 is provided in the middle of the sealing plate 6 at a position corresponding to the feed pipe 11, and the feed pipe 11 passes through the sealing plate 6 through the through opening 21. By providing the through opening 21 in the middle of the sealing plate 6, the feed pipe 11 can extend into the interior of the primary rolling screen 3 through the through opening 21.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compound fertilizer particle grading and screening device, characterized in that: The invention comprises a support frame (1), wherein the number of the support frames (1) is two, a main shaft (2) is rotatably connected between the two support frames (1), a first-level rolling screen (3) is arranged on the main shaft (2), a second-level rolling screen (4) is arranged outside the first-level rolling screen (3), a third-level rolling screen (5) is arranged outside the second-level rolling screen (4), the right sides of the first-level rolling screen (3), the second-level rolling screen (4) and the third-level rolling screen (5) are arranged correspondingly, a sealing plate (6) is arranged between the right sides of the first-level rolling screen (3), the second-level rolling screen (4) and the third-level rolling screen (5), the first-level rolling screen (3), the second-level rolling screen (4) and the third-level rolling screen (5) are arranged correspondingly, The left side ends of the three-stage rolling screen (5) are shortened successively; the inner surfaces of the first-stage rolling screen (3), the second-stage rolling screen (4) and the third-stage rolling screen (5) are all provided with a discharge screw (7); a protective cover (8) is provided between the two support frames (1) and on the outer surface of the third-stage rolling screen (5); a discharge trough (9) is provided at the lower end of the protective cover (8); a baffle (10) is provided at the outer edge of the left side ends of the first-stage rolling screen (3), the second-stage rolling screen (4) and the third-stage rolling screen (5); a feed pipe (11) is penetrated through the right side end of the protective cover (8), and the feed pipe (11) extends into the interior of the first-stage rolling screen (3).

2. A compound fertilizer particle grading and screening device according to claim 1, characterized in that: The outer surfaces of the first-stage rolling screen (3), the second-stage rolling screen (4) and the third-stage rolling screen (5) are all provided with support frames (12), and support rods (13) are all provided between the first-stage rolling screen (3) and the main shaft (2), between the second-stage rolling screen (4) and the first-stage rolling screen (3), and between the third-stage rolling screen (5) and the second-stage rolling screen (4).

3. A compound fertilizer particle grading and screening device according to claim 1, characterized in that: Partition plates (14) are provided at positions inside the discharge trough (9) corresponding to the baffle plate (10), and the inside of the discharge trough (9) is divided into a primary discharge port (15), a secondary discharge port (16), a tertiary discharge port (17), and a quaternary discharge port (18) by the partition plates (14).

4. A compound fertilizer particle grading and screening device according to claim 1, characterized in that: A bearing (19) is provided between the upper end of the support frame (1) and the main shaft (2); the main shaft (2) is rotatably connected to the two support frames (1) via the bearing (19); and a support seat (20) is provided at the lower end of the two support frames (1).

5. A compound fertilizer particle grading and screening device according to claim 1, characterized in that: A through opening (21) is provided at a position in the middle of the sealing plate (6) corresponding to the feeding pipe (11), and the feeding pipe (11) passes through the sealing plate (6) through the through opening (21).

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