Screening device for compound fertilizer production

Abstract

The utility model relates to a screening device for compound fertilizer production, including screening mechanism, the top detachable installation of screening mechanism has apron, the top fixed mounting of apron has feed bin, is provided with cooling mechanism and dispersion mechanism on the feed bin, through setting up screening mechanism, apron, feed bin, cooling mechanism and dispersion mechanism, the staff first pours compound fertilizer granule into the inside of feed bin, then uses dispersion mechanism to carry out dispersion to compound fertilizer granule, and uses cooling mechanism to carry out cooling to compound fertilizer granule, uses screening mechanism again to carry out screening to compound fertilizer granule, finally uses two collecting box respectively to carry out classification collection to compound fertilizer granule coarse material and compound fertilizer granule fine material, reduced the compound fertilizer granule because residual heat leads to surface moisture evaporation uneven, causes the granule to stick together or the situation of agglomeration to occur, improved screening effect.

Description

Technical Field

[0001] This utility model relates to the field of compound fertilizer production technology, specifically a screening device for compound fertilizer production. Background Technology

[0002] Compound fertilizers are chemical fertilizers containing two or more of the following nutrients: nitrogen, phosphorus, and potassium. They have advantages such as high nutrient content, fewer byproducts, and good physical properties. They play a vital role in balanced fertilization, improving fertilizer utilization, and promoting high and stable crop yields. The process involves first crushing various fertilizer raw materials and additives to a suitable particle size, then feeding the mixed raw materials into an extrusion granulator. The extrusion granulator applies pressure to the raw materials using a screw or roller, forcing them to be extruded through the orifices of a die to form granules. Since the extruded granules contain a certain amount of moisture, they need to be dried and cooled, typically using air cooling to lower the temperature to near room temperature. The cooled granules are then sieved to remove unqualified granules, while the qualified granules are packaged.

[0003] According to Chinese Utility Model Patent Application No. 202411066862.4, a multi-directional screening device for compound fertilizer raw materials is proposed. The utility model describes that "a primary screening mechanism and a secondary screening mechanism are set inside the screening cylinder. The primary screening mechanism is driven to shake and screen by the cooperation of the secondary screening mechanism and the primary screening mechanism. The secondary screening mechanism is driven to vibrate and screen by a vibration motor, so as to realize multi-directional and multi-stage screening of compound fertilizer raw materials, improve the screening efficiency of compound fertilizer raw materials, and obtain compound fertilizer raw materials with different particle sizes."

[0004] In this multi-directional screening equipment for compound fertilizer raw materials, the compound fertilizer particles directly enter the screening cylinder. It is uncertain whether the particles have been cooled. Uncooled particles may cause uneven evaporation of surface moisture due to residual heat, resulting in particle adhesion or clumping, which affects the screening effect and needs to be improved. Therefore, a screening device for compound fertilizer production is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a screening device for compound fertilizer production, which has the advantages of cooling compound fertilizer particles and solves the problem that uncooled particles may cause uneven evaporation of surface moisture due to residual heat, resulting in particle adhesion or clumping and affecting the screening effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screening device for compound fertilizer production, including a screening mechanism, a cover plate detachably installed on the top of the screening mechanism, a feeding hopper fixedly installed on the top of the cover plate, and a cooling mechanism and a dispersing mechanism provided on the feeding hopper;

[0007] The cooling mechanism includes a fan, which is fixedly connected to the outer wall of the feeding hopper via a mounting plate. Multiple annular pipes are fixedly installed on the inner wall of the feeding hopper. The air outlet of the fan is connected to an air outlet pipe that passes through the feeding hopper and is connected to one of the annular pipes. Adjacent annular pipes are connected to each other by a connecting pipe. Multiple air blowing pipes are connected to the outside of the multiple annular pipes.

[0008] Furthermore, the screening mechanism includes a frame, a spring fixedly installed on the top of the frame, a screening chamber fixedly installed on the top of the spring, a vibration motor fixedly installed on the bottom of the screening chamber, a screen detachably installed inside the screening chamber, and a coarse material discharge channel and a fine material discharge channel connected to the bottom of the screening chamber.

[0009] Furthermore, a first mounting plate is fixedly installed inside the screening chamber, the screen is placed on top of the first mounting plate, and a second mounting plate is placed on top of the screen. The second mounting plate is threadedly connected to the screen and the first mounting plate by bolts.

[0010] Furthermore, the cover plate is placed on top of the screening chamber, a fastener is fixedly installed on the outer wall of the screening chamber, and a fastener is fixedly installed on the outer wall of the cover plate, with the fastener and the fastener matching.

[0011] Furthermore, the dispersing mechanism includes a motor, which is fixedly connected to the outer wall of the screening chamber. The output end of the motor passes through the screening chamber and is fixedly mounted with a rotating shaft. The side of the rotating shaft away from the motor is rotatably connected to the inner wall of the screening chamber via a bearing. A dispersing rod is fixedly mounted on the outside of the rotating shaft. A baffle plate is fixedly mounted on the side of the dispersing rod away from the rotating shaft. An arc-shaped plate is fixedly mounted inside the screening chamber. The bottom of the baffle plate fits against the top of the arc-shaped plate. Dispersing holes are opened inside the arc-shaped plate.

[0012] Furthermore, a feeding hopper is fixedly installed on the top of the feeding hopper, and the feeding hopper is funnel-shaped.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This screening device for compound fertilizer production, by setting up a screening mechanism, cover plate, feeding hopper, cooling mechanism, and dispersion mechanism, allows workers to first pour compound fertilizer granules into the feeding hopper, then use the dispersion mechanism to disperse the granules, use the cooling mechanism to cool the granules, then use the screening mechanism to screen the granules, and finally use two collection boxes to separately collect the coarse and fine granules. This reduces the occurrence of uneven evaporation of surface moisture due to residual heat, which can cause granules to stick together or clump, thus improving the screening effect. Attached Figure Description

[0015] Figure 1 This is a front view of the present utility model;

[0016] Figure 2 This is a partial top view of the present invention;

[0017] Figure 3 This is a left sectional view of the feed hopper of this utility model;

[0018] Figure 4 This is a partial structural diagram of the dispersing mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the arc-shaped plate structure of this utility model.

[0020] In the diagram: 1. Screening mechanism; 11. Frame; 12. Spring; 13. Screening bin; 14. Vibrating motor; 15. Screen; 16. Coarse material feeding channel; 17. Fine material feeding channel; 2. Cover plate; 3. Feeding bin; 4. Cooling mechanism; 41. Fan; 42. Annular pipe; 43. Connecting pipe; 44. Air blowing pipe; 5. Dispersion mechanism; 51. Motor; 52. Rotating shaft; 53. Dispersion rod; 54. Baffle plate; 55. Arc plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 The screening device for compound fertilizer production in this embodiment includes a screening mechanism 1. A cover plate 2 is detachably installed on the top of the screening mechanism 1. A feeding hopper 3 is fixedly installed on the top of the cover plate 2. A cooling mechanism 4 and a dispersing mechanism 5 are provided on the feeding hopper 3. A feeding hopper 6 is fixedly installed on the top of the feeding hopper 3. The feeding hopper 3 is funnel-shaped.

[0023] Specifically, the staff first pours the compound fertilizer granules into the feed hopper 6, then uses the dispersing mechanism 5 to disperse the compound fertilizer granules, and uses the cooling mechanism 4 to cool the compound fertilizer granules. Then, the screening mechanism 1 screens the compound fertilizer granules, and finally uses two collection boxes to classify and collect the coarse and fine compound fertilizer granules respectively. This reduces the occurrence of uneven evaporation of surface moisture due to residual heat, which can cause the granules to stick together or clump, and improves the screening effect.

[0024] In this embodiment, the screening mechanism 1 includes a frame 11. Four springs 12 are fixedly installed on the top of the frame 11. A screening chamber 13 is fixedly installed on the top of the four springs 12. A vibration motor 14 is fixedly installed on the bottom of the screening chamber 13. The vibration motor 14 is in an inclined state. A screen 15 is detachably installed inside the screening chamber 13. A first mounting plate is fixedly installed inside the screening chamber 13. The screen 15 is placed on top of the first mounting plate. A second mounting plate is placed on top of the screen 15. The second mounting plate is threadedly connected to the screen 15 and the first mounting plate by bolts. A screen 15 with a suitable screen hole is selected according to the screening needs. The bottom of the screening chamber 13 is connected to a coarse material discharge channel 16 and a fine material discharge channel 17.

[0025] Specifically, by turning on the vibration motor 14, the vibration motor 14 drives the screening chamber 13, spring 12, screen 15 and compound fertilizer granules to screen. The spring 12 deforms and expands under force. The screen 15 screens the compound fertilizer granules into coarse compound fertilizer granules and fine compound fertilizer granules. The coarse compound fertilizer granules are discharged along the coarse material discharge channel 16, and the fine compound fertilizer granules pass through the screen 15 and are discharged along the fine material discharge channel 17.

[0026] In this embodiment, the cover plate 2 is placed on top of the screening chamber 13, a fastener is fixedly installed on the outer wall of the screening chamber 13, and a buckle is fixedly installed on the outer wall of the cover plate 2, with the fastener and buckle matching.

[0027] Specifically, the cover plate 2 is placed on top of the screening chamber 13, and the fastener and the fastener ring are connected to form a buckle to fix the cover plate 2.

[0028] In this embodiment, the cooling mechanism 4 includes a fan 41, which is fixedly connected to the outer wall of the feeding hopper 3 via a mounting plate. Three annular pipes 42 are fixedly installed on the inner wall of the feeding hopper 3. The air outlet of the fan 41 is connected to an air outlet pipe that passes through the feeding hopper 3 and is connected to the middle annular pipe 42. Four connecting pipes 43 are connected between adjacent annular pipes 42. Twenty-four air blowing pipes 44 are connected to the outside of the three annular pipes 42. In order to improve the cooling effect, the height of the feeding hopper 3 can be extended, the number of annular pipes 42, connecting pipes 43 and air blowing pipes 44 can be increased, and the air blowing range of the air blowing pipes 44 can be expanded.

[0029] Specifically, by turning on the fan 41, the air generated by the fan 41 is blown along the air outlet pipe, the ring pipe 42, the connecting pipe 43 and the blowing pipe 44 towards the fallen compound fertilizer particles to cool them down.

[0030] In this embodiment, the dispersing mechanism 5 includes a motor 51, which is fixedly connected to the outer wall of the screening chamber 13. The output end of the motor 51 passes through the screening chamber 13 and is fixedly mounted with a rotating shaft 52. The side of the rotating shaft 52 away from the motor 51 is rotatably connected to the inner wall of the screening chamber 13 through a bearing. Three sets of dispersing rods 53 are fixedly mounted on the outside of the rotating shaft 52. Each set of dispersing rods 53 has six rods. The six dispersing rods 53 are evenly distributed in a ring, and the eighteen dispersing rods 53 are arranged in three horizontal rows. A baffle plate 54 is fixedly mounted on the side of each row of dispersing rods 53 away from the rotating shaft 52. There are six baffle plates 54. An arc-shaped plate 55 is fixedly mounted inside the screening chamber 13. The bottom of the baffle plate 54 is in contact with the top of the arc-shaped plate 55. Five dispersing holes are opened inside the arc-shaped plate 55. The five dispersing holes are evenly distributed in a ring, and the area of ​​the baffle plate 54 is larger than the area of ​​the dispersing holes.

[0031] Specifically, by turning on the motor 51, the motor 51 drives the rotating shaft 52, the dispersing rod 53 and the baffle plate 54 to rotate. The dispersing rod 53 disperses the compound fertilizer particles, and the arc plate 55 blocks the dispersing holes, making it difficult for the compound fertilizer raw materials to stick together or clump, and also facilitating the cooling of the compound fertilizer raw materials by blowing air.

[0032] The working principle of the above embodiments is as follows:

[0033] First, the staff pours the compound fertilizer granules into the feed hopper 6, then turns on the motor 51. The motor 51 drives the rotating shaft 52, the dispersing rod 53, and the baffle plate 54 to rotate. The dispersing rod 53 disperses the compound fertilizer granules, and the arc plate 55 blocks the dispersing holes. Then, the fan 41 is turned on. The air generated by the fan 41 is blown along the air outlet pipe, the annular pipe 42, the connecting pipe 43, and the blowing pipe 44 onto the falling compound fertilizer granules to cool them down, making the compound fertilizer raw materials less likely to stick together or clump. Then, the vibrating motor 14 is turned on, which drives the screening chamber 13 and the spring... 12. The screen 15 and the compound fertilizer granules are screened. The spring 12 is deformed and expands under force. The screen 15 screens the compound fertilizer granules into coarse compound fertilizer granules and fine compound fertilizer granules. The coarse compound fertilizer granules are discharged along the coarse material discharge channel 16, and the fine compound fertilizer granules pass through the screen 15 and are discharged along the fine material discharge channel 17. Finally, two collection boxes are used to collect the coarse compound fertilizer granules and the fine compound fertilizer granules separately. This reduces the occurrence of uneven evaporation of surface moisture due to residual heat of the compound fertilizer granules, which causes the granules to stick together or clump, and improves the screening effect.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] 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 screening device for compound fertilizer production, comprising a screening mechanism (1), a cover plate (2) is detachably installed on the top of the screening mechanism (1), and a feeding bin (3) is fixedly installed on the top of the cover plate (2), characterized in that: The feeding hopper (3) is equipped with a cooling mechanism (4) and a dispersing mechanism (5); The cooling mechanism (4) includes a fan (41), which is fixedly connected to the outer wall of the feeding hopper (3) by a mounting plate. Multiple annular pipes (42) are fixedly installed on the inner wall of the feeding hopper (3). The air outlet of the fan (41) is connected to an air outlet pipe that passes through the feeding hopper (3) and is connected to one of the annular pipes (42). Adjacent annular pipes (42) are connected by a connecting pipe (43). Multiple air blowing pipes (44) are connected to the outside of the multiple annular pipes (42).

2. The screening device for compound fertilizer production according to claim 1, characterized in that: The screening mechanism (1) includes a frame (11), a spring (12) is fixedly installed on the top of the frame (11), a screening chamber (13) is fixedly installed on the top of the spring (12), a vibration motor (14) is fixedly installed on the bottom of the screening chamber (13), a screen (15) is detachably installed inside the screening chamber (13), and the bottom of the screening chamber (13) is connected to a coarse material discharge channel (16) and a fine material discharge channel (17).

3. The screening device for compound fertilizer production according to claim 2, characterized in that: The screening chamber (13) is fixedly installed with a first mounting plate. The screen (15) is placed on top of the first mounting plate. A second mounting plate is placed on top of the screen (15). The second mounting plate is threadedly connected to the screen (15) and the first mounting plate by bolts.

4. The screening device for compound fertilizer production according to claim 2, characterized in that: The cover plate (2) is placed on top of the screening chamber (13). A fastener is fixedly installed on the outer side wall of the screening chamber (13), and a buckle is fixedly installed on the outer side wall of the cover plate (2). The fastener and the buckle are matched.

5. The screening device for compound fertilizer production according to claim 1, characterized in that: The dispersing mechanism (5) includes a motor (51), which is fixedly connected to the outer wall of the screening chamber (13). The output end of the motor (51) passes through the screening chamber (13) and is fixedly installed with a rotating shaft (52). The side of the rotating shaft (52) away from the motor (51) is rotatably connected to the inner wall of the screening chamber (13) through a bearing. A dispersing rod (53) is fixedly installed on the outside of the rotating shaft (52). A baffle plate (54) is fixedly installed on the side of the dispersing rod (53) away from the rotating shaft (52). An arc plate (55) is fixedly installed inside the screening chamber (13). The bottom of the baffle plate (54) is in contact with the top of the arc plate (55). A dispersing hole is opened inside the arc plate (55).

6. The screening device for compound fertilizer production according to claim 1, characterized in that: The top of the feeding bin (3) is fixedly installed with a feeding hopper (6), and the feeding bin (3) is horn-shaped.

Images