A screening device for fertilizer
By changing the position of the exciter and setting the drive motor in the fertilizer screening device and changing the material movement trajectory, the problems of material blockage and screen replacement operations in the existing devices are solved, and screening efficiency and continuity are improved.
Patent Information
- Application Number
- CN202420655560.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The structural design of the existing fertilizer screening device is unreasonable, which leads to the easy blockage of materials during the screening process, which reduces the screening speed and output. At the same time, the screen replacement operation is cumbersome and the maintenance cost is high.
By designing that the exciter in the exciter assembly is located at the feed port end on the outer side of the bottom plate of the screen box, and is arranged on the end face of the feed port end of the screen box with the driving motor, the movement trajectory of the material in the screen machine is changed and the screen replacement operation is simplified.
It improves the yield and efficiency of fertilizer screening, simplifies screen replacement operations, reduces production costs, and improves the continuity and stability of fertilizer production.
Smart Images
Figure CN222710134U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vibrating screens, and in particular relates to a screening device for producing fertilizers, compound fertilizers and conventional materials. Background Art
[0002] In the process of agricultural production, fertilizer, as an important agricultural production material, plays a significant role in improving the yield and quality of crops. In the production and use of fertilizers, in order to ensure the particle size and uniformity of fertilizers and remove impurities, it is usually necessary to use a fertilizer screening device for screening. However, there are many problems in the actual use of existing fertilizer screening devices, which seriously restrict the efficiency and output of fertilizer production. For example, the existing fertilizer screening method is relatively traditional, and it is impossible to form a dual-way / multi-way screening channel. The screening output is generally low and cannot meet the needs of large-scale fertilizer production; and the internal structure and screen installation method of the existing screening device are complex, with a high failure rate and high maintenance cost; the above problems are mainly due to the unreasonable structural design of the screening device, which causes the fertilizer particles to be easily blocked during the screening process, thereby reducing the screening speed and output. At the same time, in the existing fertilizer screen and even the field of vibrating screens, the screens are fixed inside the screen machine. When repairing or replacing the screen, the whole machine needs to be disassembled to expose the screen part and then repair or replace the screen. This operation is too cumbersome, affecting the efficiency of equipment use and increasing maintenance costs. Utility Model Content
[0003] In order to solve the above technical problems, the utility model designs a screening device for fertilizers. By cleverly designing the vibration source position, the movement trajectory of the material in the screening machine is changed, the output and efficiency of fertilizer screening are improved, and the replacement operation of the screen is simplified, the production cost is reduced, and the continuity and stability of fertilizer production are improved.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screening device for fertilizer, comprising a base, a screen box arranged on the base and an excitation component arranged at the bottom of the screen box and providing power for the screen box, the screen box is arranged obliquely downward from its feed port end to the discharge port end, a screening component is arranged in the screen box, and the exciter in the excitation component is located at the feed port end of the outer side surface of the bottom plate of the screen box; the screening component has at least one group, each group of screening components has a multi-layer screen mechanism distributed up and down, each layer of the screen mechanism includes a screen frame, a screen frame arranged above the screen frame and a screen frame located at the end of the screen frame for supporting the screen frame, the screen frame includes a hanging plate fixed to the side of the screen box and a support rod erected between two relatively arranged hanging plates, and the screen frame is placed on the support rod through the support ears on its end faces; side doors corresponding to each group of screening components are opened on the two side panels of the screen box, the screening component is pulled out and pushed in from the side door, and the side door is rotatably mounted on the side panel of the screen box by snap buckles.
[0005] As a further improvement of the screening device for fertilizer of the utility model: the driving motor in the vibration component is arranged on the end face of the feed inlet of the screen box, and the vibrator is drivingly connected to the driving motor.
[0006] As a further improvement of the screening device for fertilizer of the utility model: the screen box has a partition plate arranged along its length direction inside, and the hanging plate is symmetrically fixed to the side surface of the partition plate and the inner side surface of the screen box side plate.
[0007] As a further improvement of the screening device for fertilizers of the utility model: the hanging plate is of a concave structure, a reinforcing rod is placed between two corresponding hanging plates through the depression thereon, and arc grooves for placing support rods are provided on both sides of the depression on the upper end surface of the hanging plate; and limit blocks are provided at both ends of the support rods.
[0008] As a further improvement of the screening device for fertilizer of the utility model: a connecting plate is arranged between two adjacent screen frames, and the upper side surface of the connecting plate is flush with the upper side surface of the screen frame.
[0009] As a further improvement of the fertilizer screening device of the utility model: a handle is arranged on the side of the screen frame, and a plurality of observation windows and dust extraction ports are arranged on the upper cover plate of the screen box.
[0010] As a further improvement of the screening device for fertilizer of the utility model: the screening components are distributed in four groups from the feed port end to the discharge port end of the screen box, each group of screening components has a two-layer screen mechanism distributed up and down, and the two sides of the screen box are respectively provided with side doors corresponding to each screening component.
[0011] Beneficial Effects
[0012] Compared with the prior art, the fertilizer screening device described in the utility model has the following beneficial effects:
[0013] First, the screening device for fertilizers described in the utility model is not limited to the field of fertilizer production, but can also be applied to the screening of compound fertilizers and ordinary materials. The vibrator in the vibration assembly is arranged at the feed port end of the outer side of the bottom plate of the screen box, and the drive motor is arranged at the end face of the feed port end of the screen box. This structural design changes the action position of the vibrator, so that the material produces a variety of motion trajectories after entering the screen box. The material has a variety of motion trajectories that fit its position during the movement from the feed port to the discharge port inside the screen box, thereby achieving rapid and uniform diffusion at the front end and reciprocating rapid discharge at the rear end, greatly improving the discharge efficiency.
[0014] Secondly, the screening device for fertilizers described in the utility model modularizes the screen in the screen box, and at the same time opens a movable maintenance side door on the side of the screen box. The buckle-fixed side door is designed for easy opening and closing, and is combined with a small-volume split modular screen for easy replacement, thereby reducing the cost of screen replacement. At the same time, the screen frame in the screen mechanism is movably placed on the screen frame, and the screen can be removed and installed by pulling the screen frame handle, thereby greatly improving the maintenance efficiency.
[0015] Third, the setting of the position of the vibrator in the fertilizer screening device of the utility model can make the material be affected by the vibrator when entering the screen box, which helps to disperse and loosen the material more quickly and make it easier to pass through the screen hole. In addition, placing the vibrator at the feed inlet end can promote the movement of the material on the screen surface and prevent it from accumulating at the screen hole and causing material blockage.
[0016] Fourth, in the screening device for fertilizer described in the utility model, an observation window and a dust extraction port are arranged on the upper cover plate of the screen box corresponding to the screening components, so that the material situation at each screening component can be observed, and the internal dust can be discharged in time through the dust removal device connected to the dust extraction port to avoid clogging of the screen holes.
[0017] Fifth, the screening device for fertilizers described in the utility model can not only improve the maintenance efficiency and reduce the maintenance cost by setting up modular screening components, but also adjust the number of screen layers and the number of feeding channels according to different screening requirements, that is, one screening machine can have multiple screening structures, thereby saving the device space while increasing the output of the screening device. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a side view structural schematic diagram of the fertilizer screening device of the utility model;
[0019] Figure 2 It is a partial structural schematic diagram of the screening device of the utility model;
[0020] Figure 3 It is a structural schematic diagram of the hanging plate in the utility model;
[0021] Figure 4 This is a schematic diagram of the side view of the screening device described in the utility model.
[0022] Figure 5 It is a simulation diagram of the material movement trajectory in the utility model;
[0023] Markings in the figure: 1. base, 2. screen box, 201. feed port, 202. discharge port, 203. observation window, 204. dust extraction port, 205. side door, 301. vibrator, 302. drive motor, 401. screen frame, 402. screen rack, 403. hanging plate, 404. support rod, 405. dividing plate. DETAILED DESCRIPTION
[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides a detailed implementation method.
[0025] The screening device for fertilizer described in the utility model comprises a base 1, a screen box 2 arranged on the base 1 and an excitation component arranged at the bottom of the screen box 2 and providing power to the screen box 2. The two ends of the screen box 2 are respectively arranged as a feed port 201 and a discharge port 202. An observation window 203 and a dust extraction port 204 are arranged on the upper cover plate of the screen box 2 corresponding to the screening component, so that the material situation at each screening component can be observed, and the dust inside the dust removal device can be connected through the dust extraction port 204 to discharge it in time to avoid clogging of the screen hole. After the screen box 2 is installed on the base 1, it is inclined downward from its feed port 201 end to the discharge port 202 end, and the screen box 2 has a screening component. In order to solve the problems of low efficiency and low output of screening devices in the field of fertilizer screens or vibrating screens in the prior art, the utility model sets the vibrator 301 in the excitation assembly at the feed port 201 end on the outer side of the bottom plate of the screen box 2. At the same time, in order to improve the coordination of the whole machine, the drive motor 302 is set at the end face of the feed port 201 of the screen box 2. The drive motor 302 drives the vibrator 301 to operate through a transmission device such as a belt. Compared with the existing vibrating screen in which the vibrator 301 is set at the center of the bottom of the screen box 2, this structural design changes the action position of the vibrator 301, so that the material generates a variety of motion trajectories after entering the screen box 2 (such as Figure 5 As shown in the figure, the motion trajectory of the material from the feed port to the discharge port is simulated from left to right). Specifically, when the material enters from the feed port 201, it first undergoes a small-angle high-frequency vibration under the action of the vibrator 301 and the screen box 2, which facilitates the rapid and uniform dispersion of the material; when the material moves downward, the amplitude of its motion trajectory decreases and the distance increases; when the material is dispersed to the end near the discharge port 202 of the screen box 2, the amplitude of its motion trajectory is further reduced, almost reciprocating motion, and the discharge efficiency is improved. Therefore, compared with the prior art in which the vibration source position is set in the middle of the screen box 2, the material of the screening device in the prior art always vibrates at the same frequency in the screen box 2. This device changes its motion trajectory in a targeted manner by placing the material in different positions, and greatly improves the discharge efficiency while ensuring the screening effect. This set of device is compared with the existing screening machine under the same conditions. The discharge efficiency is 1.5-2 times that of the existing screening machine.
[0026] The screening device for fertilizer described in the utility model has at least one group of screening components, each group of screening components has a multi-layer screen mechanism distributed up and down, specifically, the screening components in this embodiment are distributed in eight groups from the feed port 201 end to the discharge port 202 end of the screen box 2, each group of screening components has a two-layer screen mechanism distributed up and down, each layer of the screen mechanism includes a screen frame 401, a screen frame 402 arranged above the screen frame 401 and a screen frame located at the end of the screen frame 401 for supporting the screen frame 401, the screen box 2 has a partition plate 405 arranged along its length direction, the partition plate 405 divides the eight groups of screening components into two symmetrically arranged columns, each column has four groups of screening components, and each column of screening components constitutes a screening and unloading channel; the partition plate 405 is provided with hanging plates 403 on both sides, and the screen frame includes a hanging plate 403 and a support rod 404 fixed to the side of the screen box 2, and limit blocks are provided at both ends of the support rod 404. The support rod 404 is mounted between two hanging plates 403 arranged opposite to each other on the screen box 2 and the dividing plate 405, and the screen frame 401 is placed on the support rod 404 through the support ears on its end surface. A connecting plate is arranged between two adjacent screen frames 401, and the upper side of the connecting plate is flush with the upper side of the screen frame 402, so that each layer of screen and the connecting plate are in the same plane, which is convenient for material movement and avoids material jamming.
[0027] The hanging plates 403 located on the inner side of the dividing plate 405 and the screen box 2 are generally in a concave structure, and a reinforcing rod is placed between the two corresponding hanging plates 403 through the depression thereon. Both sides of the depression on the upper end surface of the hanging plate 403 have arc grooves for placing support rods 404.
[0028] The side panels of the screen box 2 are provided with side doors 205 corresponding to each group of screening components. The lower end of the side door 205 is rotatably connected to the screen box 2 through a rotating shaft, and the upper end of the side door 205 is movably fixed to the screen box 2 through a buckle. The screen frame 401 and the screen frame 402 are clamped and fixed, and a handle is provided on one side of the screen frame 401. The screen frame 401 is placed on the support rod 404 through the upper support ear. When the screen needs to be repaired or replaced, the side door 205 of the screen box 2 can be opened to pull out the screen frame 401 without disassembling the whole machine.
[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, 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 are still within the scope of the technical solution of the present invention.
Claims
1. A screening device for fertilizer, comprising a base (1), a screen box (2) arranged on the base (1), and an excitation component arranged at the bottom of the screen box (2) and providing power to the screen box (2), wherein the screen box (2) is arranged to be inclined downward from its feed inlet (201) end to its discharge outlet (202) end, and a screening component is provided in the screen box (2), characterized in that: The vibrator (301) in the vibration excitation assembly is located at the feed inlet (201) end of the outer side surface of the bottom plate of the screen box (2); The screening assembly comprises at least one group, each group of screening assemblies comprises a plurality of layers of screen mechanisms distributed up and down, each layer of the screen mechanisms comprises a screen frame (401), a screen frame (402) arranged above the screen frame (401), and a screen frame located at the end of the screen frame (401) for supporting the screen frame (401), the screen frame comprising a hanging plate (403) fixed to the side of the screen box (2) and a support rod (404) arranged between two hanging plates (403) arranged opposite to each other, and the screen frame (401) is placed on the support rod (404) via a support ear on its end surface; Side doors (205) corresponding to each group of screening components are provided on the two side panels of the screen box (2). The screening components are pulled out and pushed in through the side doors (205). The side doors (205) are rotatably mounted on the side panels of the screen box (2) by means of buckles.
2. A screening device for fertilizer according to claim 1, characterized in that: The driving motor (302) in the vibration excitation component is arranged on the end surface of the feed port (201) of the screen box (2), and the vibration exciter (301) is drivingly connected to the driving motor (302).
3. A screening device for fertilizer according to claim 2, characterized in that: The screen box (2) has a partition plate arranged inside along its length direction, and the hanging plate (403) is symmetrically fixed to the side of the partition plate (405) and the inner side of the side plate of the screen box (2).
4. A screening device for fertilizer according to any one of claims 2 or 3, characterized in that: The hanging plate (403) is in a concave-shaped structure, and a reinforcing rod is placed between two corresponding hanging plates (403) through the concave portion thereon. Both sides of the concave portion of the upper end surface of the hanging plate (403) are provided with arc grooves for placing support rods (404), and the two arc grooves on the hanging plate (403) located on the side of the screen box (2) are respectively arranged corresponding to the side doors (205); and limit blocks are arranged at both ends of the support rod (404).
5. A screening device for fertilizer according to claim 4, characterized in that: A connecting plate is provided between two adjacent screen frames (401), and the upper side surface of the connecting plate is flush with the upper side surface of the screen frame (402).
6. A screening device for fertilizer according to claim 5, characterized in that: A handle is provided on the side of the screen frame (401), and a plurality of observation windows (203) and dust extraction ports (204) are provided on the upper cover plate of the screen box (2).
7. A screening device for fertilizer according to claim 6, characterized in that: The screening components are distributed in four groups from the feed inlet (201) end to the discharge outlet (202) end of the screen box (2), each group of screening components having two layers of screen mechanisms distributed up and down, and side doors (205) corresponding to each screening component are respectively provided on the two side surfaces of the screen box (2).