Multi-stage screening device in fertilizer production process

Abstract

The invention provides a multi-stage screening device in the fertilizer production process. The multi-stage screening device comprises a screening box, a driving mechanism, a screening barrel, a waste outlet, a smashing box, a smashing mechanism, a discharging opening, a vibrating screening frame and a feeding pipe. The multi-stage fertilizer screening device is provided with the screening barrel, the vibration screening frame and the crushing box, so that multi-stage screening of fertilizer is achieved, meanwhile, the crushing mechanism in the crushing box crushes caked fertilizer, and manual grinding is not needed while the screening quality is guaranteed; and then the ground large-particle powder is poured into the screening device to be screened again, so that the labor force of workers is reduced, and the production and processing cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, and in particular to a multi-stage screening device in a fertilizer production process. Background Art

[0002] Fertilizer refers to a type of substance that can provide one or more essential nutrients for plants to improve soil properties and increase soil fertility levels. It is one of the material bases of agricultural production. Fertilizers usually need to be screened during production and processing, so a special screening device must be used; and in actual use, the existing screening device, because some fertilizers will clump, when the agglomerated fertilizers are screened out, they need to be manually ground, and then the ground large-particle powder is poured into the screening device for screening again, which undoubtedly increases the labor of the staff and increases the production and processing costs. Summary of the invention

[0003] The purpose of the present invention is to design a multi-stage screening device in a fertilizer production process to solve the problems raised by the background technology. To achieve the above purpose, the present invention provides the following technical solution: comprising a screening drum installed inside a screening box and driven by a driving mechanism, a crushing box connected to a waste outlet of the screening drum, a crushing mechanism arranged inside the crushing box, a discharge port arranged at the bottom of the crushing box, and a vibrating screening frame installed at the bottom of the screening box, the discharge port is aligned with the vibrating screening frame, a feed pipe is provided on the axis of the screening drum, the feed pipe is rotatably connected to the end of the screening drum, and the feed pipe passes through the end of the screening drum.

[0004] Furthermore, the screening cylinder comprises a coaxial outer screening cylinder and an inner screening cylinder, the diameter of the screening holes on the inner screening cylinder is larger than the diameter of the screening holes on the outer screening cylinder, and a plurality of waste outlets are provided at the ends of the inner screening cylinder and the outer screening cylinder facing away from the feed pipe.

[0005] Furthermore, a support platform is provided inside the screening box, the driving mechanism includes a support member connected to the support platform and a driving motor fixedly connected to the support member, a rotating cylinder rotatably connected to the support member is provided at the end of the screening cylinder, a driven pulley is provided on the rotating cylinder, and an active pulley connected to the driven pulley through a belt is provided on the output end of the driving motor, and the feed pipe is fixedly connected to the support member and passes through the support member.

[0006] Furthermore, the screening box is provided with two symmetrically distributed screening drums and two vibrating screening frames, and the screening box is provided with an angle adjustment mechanism for simultaneously adjusting the inclination angles of the two screening drums.

[0007] Furthermore, the angle adjustment mechanism includes a base fixed on the support platform and the support member rotatably connected to the base via a rotating shaft, the end of the screening drum facing away from the support member is rotatably connected to an adjusting shaft, the end of the adjusting shaft is rotatably connected to a connecting rod, the end of the connecting rod facing away from the adjusting shaft is rotatably connected to a moving block, and the top of the moving block is connected to a winch installed on the top of the screening box via a steel wire rope.

[0008] Furthermore, the feed pipe located outside the screening cylinder is connected with a hose.

[0009] Furthermore, a guide rod is provided on the moving block, and a guide cylinder which is gap-matched with the guide rod is provided on the inner top of the screening box.

[0010] Furthermore, the adjusting shaft located inside the screening drum is connected to the end of the supporting member via a plurality of connecting rods.

[0011] Furthermore, two symmetrically distributed discharge barrels are provided at the bottom of the crushing box, and the discharge port is provided at the bottom of the discharge barrels.

[0012] Furthermore, a material discharge chamber is provided at the top of the discharge barrel, and a trumpet-shaped material discharge port aligned with the vibration screening frame is connected to the bottom of the material discharge chamber through a through hole.

[0013] Furthermore, a qualified product conveyor belt aligned with the two vibrating screening frames is provided at the bottom of the screening box, and a waste conveyor belt is provided symmetrically between the two qualified product conveyor belts. The qualified product conveyor belt is located above the waste conveyor belt and the distance between the two qualified product conveyor belts is smaller than the width of the waste conveyor belt.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with a screening cylinder, a vibrating screening frame and a crushing box, thereby realizing multi-stage screening of fertilizers, while the crushing mechanism inside the crushing box crushes the agglomerated fertilizers, thereby ensuring the screening quality while eliminating the need for manual grinding and then pouring the ground large-particle powder into the screening device for further screening, thereby reducing the labor of the staff and reducing the production and processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0017] Figure 2 It is a partial cross-sectional enlarged schematic diagram of the present invention.

[0018] Among them: 1. Support table; 2. Screening drum; 3. Screening box; 4. Trumpet-shaped discharge port; 5. Vibrating screening frame; 6. Crushing mechanism; 7. Angle adjustment mechanism; 8. Waste outlet; 9. Crushing box; 10. Discharging drum; 11. Conformable product conveyor belt; 12. Waste conveyor belt; 13. Discharging port; 14. Driving motor; 15. Base; 16. Support; 17. Belt; 18. Driven pulley; 19. Feed pipe; 20. Outer screen drum; 21. Inner screen drum; 22. Guide rod; 23. Guide drum; 24. Wire rope; 25. Moving block; 26. Connecting rod; 27. Adjusting shaft; 28. Connecting rod; 29. ​​Rotating drum. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] Example: Please refer to Figure 1-2 A multi-stage screening device in a fertilizer production process comprises a screening drum 2 installed inside a screening box 3 and driven by a driving mechanism, a crushing box 9 connected to a waste outlet 8 of the screening drum 2, a crushing mechanism 6 arranged inside the crushing box 9, a discharge port 13 arranged at the bottom of the crushing box 9 and a vibrating screening frame 5 installed at the bottom of the screening box 3, the discharge port 13 is aligned with the vibrating screening frame 5, a feed pipe 19 is arranged on the axis of the screening drum 2, the feed pipe 19 is rotatably connected to the end of the screening drum 2, and the feed pipe 19 passes through the end of the screening drum 2; wherein the crushing mechanism 6 adopts a common fertilizer crushing method. Mechanism 6, such as the meshing of two crushing rollers, and the vibrating screening frame 5 adopts the form of setting a vibration motor on the screening frame, which will not be described in detail here; therefore, in the present invention, the fertilizer is first screened through the screening drum 2, and the agglomerated fertilizer will fall into the crushing box 9 through the waste outlet 8 for crushing, and after crushing and passing through the screening drum 2 for the first time, the fertilizer will fall into the vibrating screening frame 5 for the next level of screening; therefore, the present invention can crush and screen the agglomerated fertilizer while realizing multi-level screening of the fertilizer, thereby reducing the labor of the staff and reducing the production and processing costs.

[0021] In this embodiment, the screening drum 2 includes a coaxial outer screening drum 20 and an inner screening drum 21, the diameter of the screening holes on the inner screening drum 21 is larger than the diameter of the screening holes on the outer screening drum 20, and the inner and outer screening drums 21 and 20 are provided with a plurality of waste outlets 8 at one end away from the feed pipe 19, thereby improving the screening quality of the device; and a support platform 1 is provided inside the screening box 3, and a driving mechanism includes a support member 16 connected to the support platform 1 and a driving motor 14 fixed to the support member 16, and a rotating drum 29 rotatably connected to the support member 16 is provided at the end of the screening drum 2, and a driven pulley 18 is provided on the rotating drum 29, and an active belt connected to the driven pulley 18 through a belt 17 is provided on the output end of the driving motor 14 Wheel, the feed pipe 19 is fixedly connected to the support member 16 and passes through the support member 16, thereby realizing the rotation of the screening drum 2, wherein the rotation connection method can be in the form of a bearing connection; and the interior of the screening box 3 is provided with two symmetrically distributed screening drums 2 and two vibrating screening frames 5, and the interior of the screening box 3 is provided with an angle adjustment mechanism 7 for simultaneously adjusting the inclination angle of the two screening drums 2, the angle adjustment mechanism 7 includes a base 15 fixedly connected to the support platform 1 and a support member 16 rotatably connected to the base 15 through a rotating shaft, the end of the screening drum 2 away from the support member 16 is rotatably connected to an adjusting shaft 27, the end of the adjusting shaft 27 is rotatably connected to a connecting rod 26, and the end of the connecting rod 26 away from the adjusting shaft 27 is rotatably connected to the moving block 25 The connection and rotation connection can be realized in the form of a clearance fit between the rotating shaft and the rotating ear; the top of the moving block 25 is connected to the winch installed on the top of the screening box 3 through a wire rope 24, and the feed pipe 19 located outside the screening drum 2 is connected to a hose. When the moving block 25 moves up and down, the inclination angle of the screening drum 2 can be adjusted to control the length of time the fertilizer stays inside the screening drum 2, thereby adjusting the screening speed of the screening drum 2, and thus ensuring the screening quality of the device; a guide rod 22 is provided on the moving block 25, and a guide cylinder 23 with a clearance fit with the guide rod 22 is provided on the inner top of the screening box 3, thereby ensuring the stability of the movement of the moving block 25; the adjusting shaft 27 located inside the screening drum 2 and the support 16 The ends are connected by a plurality of connecting rods 28. When the inclination angle of the screening drum 2 is adjusted, the support member 16, the connecting rod 28 and the adjusting shaft 27 are rotating rigid parts, which is conducive to preventing the screening drum 2 from being deformed by force during the adjustment process, thereby improving the service life of the device; and the bottom of the crushing box 9 is provided with two symmetrically distributed discharge drums 10, and the bottom of the discharge drum 10 is provided with a discharge port 13, which is convenient for the crushed fertilizer to enter the vibrating screening frame 5, and the top of the discharge drum 10 is provided with a discharge chamber, and the bottom of the discharge chamber is connected to a trumpet-shaped discharge port 4 aligned with the vibrating screening frame 5 through a through hole, so that the qualified fertilizer screened from the screening drum 2 will enter the vibrating screening frame 5 again for the next level of screening;The bottom of the screening box 3 is provided with a qualified product conveyor belt 11 which is aligned with the two vibrating screening frames 5 respectively, and a waste conveyor belt 12 is provided symmetrically between the two qualified product conveyor belts 11. The qualified product conveyor belt 11 is located above the waste conveyor belt 12 and the distance between the two qualified product conveyor belts 11 is less than the width of the waste conveyor belt 12. The qualified fertilizer screened out from the vibrating screening frame 5 will be conveyed out through the qualified product conveyor belt 11, and the unqualified products (such as gravel or fertilizer that has not been crushed by the crushing mechanism 6) will be output through the waste conveyor belt 12. ;

[0022] The working principle of this embodiment is as follows: the fertilizer is first screened through the screening drum 2, the agglomerated fertilizer will fall into the crushing box 9 through the waste outlet 8 for crushing, and the crushed fertilizer will fall into the vibrating screening frame 5 through the discharge drum 10, and the fertilizer initially screened by the screening drum 2 will also fall into the vibrating screening frame 5 through the trumpet-shaped discharge port 4 for the next level of screening; therefore, the present invention can crush and screen the agglomerated fertilizer while realizing multi-level screening of the fertilizer, thereby reducing the labor of the staff and reducing the production and processing costs.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multi-stage screening device in a fertilizer production process, characterized in that: The invention comprises a screening drum (2) installed inside a screening box (3) and driven by a driving mechanism, a crushing box (9) connected to a waste outlet (8) of the screening drum (2), a crushing mechanism (6) arranged inside the crushing box (9), a discharge port (13) arranged at the bottom of the crushing box (9), and a vibrating screening frame (5) installed at the bottom of the screening box (3), wherein the discharge port (13) is aligned with the vibrating screening frame (5), and a feed pipe (19) is provided on the axis of the screening drum (2), wherein the feed pipe (19) is rotatably connected to the end of the screening drum (2), and the feed pipe (19) passes through the end of the screening drum (2).

2. The multi-stage screening device in the fertilizer production process according to claim 1, characterized in that: The screening cylinder (2) comprises a coaxial outer screening cylinder (20) and an inner screening cylinder (21), the diameter of the screening holes on the inner screening cylinder (21) being larger than the diameter of the screening holes on the outer screening cylinder (20), and a plurality of waste outlets (8) are provided at one end of the inner screening cylinder (21) and the outer screening cylinder (20) facing away from the feed pipe (19).

3. The multi-stage screening device in the fertilizer production process according to claim 1, characterized in that: A support platform (1) is provided inside the screening box (3); the driving mechanism comprises a support member (16) connected to the support platform (1) and a driving motor (14) fixedly connected to the support member (16); a rotating cylinder (29) rotatably connected to the support member (16) is provided at the end of the screening cylinder (2); a driven pulley (18) is provided on the rotating cylinder (29); a driving pulley connected to the driven pulley (18) via a belt (17) is provided on the output end of the driving motor (14); and the feeding pipe (19) is fixedly connected to the support member (16) and passes through the support member (16).

4. The multi-stage screening device in the fertilizer production process according to claim 3, characterized in that: The screening box (3) is provided with two symmetrically distributed screening drums (2) and two vibrating screening frames (5), and the screening box (3) is provided with an angle adjustment mechanism (7) for simultaneously adjusting the inclination angles of the two screening drums (2).

5. The multi-stage screening device in the fertilizer production process according to claim 4, characterized in that: The angle adjustment mechanism (7) comprises a base (15) fixedly connected to the support platform (1) and the support member (16) rotatably connected to the base (15) via a rotating shaft; the end of the screening drum (2) away from the support member (16) is rotatably connected to an adjustment shaft (27); the end of the adjustment shaft (27) is rotatably connected to a connecting rod (26); the end of the connecting rod (26) away from the adjustment shaft (27) is rotatably connected to a moving block (25); the top of the moving block (25) is connected to a winch installed on the top of the screening box (3) via a steel wire rope (24).

6. The multi-stage screening device in the fertilizer production process according to claim 5, characterized in that: The moving block (25) is provided with a guide rod (22), and the inner top of the screening box (3) is provided with a guide cylinder (23) which is clearance-matched with the guide rod (22).

7. The multi-stage screening device in the fertilizer production process according to claim 5, characterized in that: The adjusting shaft (27) located inside the screening drum (2) is connected to the end of the supporting member (16) via a plurality of connecting rods (28).

8. The multi-stage screening device in the fertilizer production process according to claim 4, characterized in that: The bottom of the crushing box (9) is provided with two symmetrically distributed discharge barrels (10), and the bottom of the discharge barrel (10) is provided with the discharge port (13).

9. The multi-stage screening device in the fertilizer production process according to claim 8, characterized in that: A material discharge chamber is provided at the top of the discharge barrel (10), and a trumpet-shaped material discharge port (4) aligned with the vibration screening frame (5) is connected to the bottom of the material discharge chamber through a through hole.

10. The multi-stage screening device in the fertilizer production process according to claim 4, characterized in that: The bottom of the screening box (3) is provided with a qualified product conveyor belt (11) which is aligned with the two vibration screening frames (5) respectively, and a waste conveyor belt (12) is provided symmetrically between the two qualified product conveyor belts (11), the qualified product conveyor belt (11) is located above the waste conveyor belt (12) and the distance between the two qualified product conveyor belts (11) is less than the width of the waste conveyor belt (12).

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