An extrusion granulator for fertilizer production

Abstract

The invention discloses an extrusion granulator for fertilizer production, which relates to the field of extrusion fertilizer production. The invention comprises a granulator shell, the top of the granulator shell is fixedly connected to a fertilizer input pipe, the inner cavity of the granulator shell is symmetrically rotatably connected to an electric roller, a screening component is arranged in the granulator shell, the screening component comprises a fixed rectangular shell, the fixed rectangular shell is fixedly connected to the top of the inner cavity of the granulator shell, a first rotating column is rotatably connected to the inner cavity side wall of the granulator shell, a first synchronous belt is transmission-connected between the outer side of the first rotating column and one of the electric rollers, and the contact area and frequency between the powdered fertilizer and the circular hole are significantly improved through the swing operation of the discharge pipe, the powdered fertilizer can quickly pass through the circular hole and fall into the collection box, thereby avoiding accumulation and blockage, and avoiding the problem that the traditional screening net relies on the fertilizer's own gravity or vibration screening, which is prone to screen hole blockage and low screening efficiency.

Description

Technical Field

[0001] The invention relates to the field of extrusion fertilizer production, in particular to an extrusion granulator used for fertilizer production. Background Art

[0002] In the existing fertilizer production process, it is necessary to go through the processing procedures of reaction, crushing, granulation, drying and coating. Granulation is an inevitable process. Therefore, the fertilizer extrusion granulator was created under such background. The core principle of the fertilizer extrusion granulator is to use two rollers to mechanically squeeze the powdered or paste fertilizer into granules with a certain shape and strength under high pressure.

[0003] The screening net in the existing fertilizer extrusion granulator relies on the fertilizer's own gravity or vibration for screening, which is prone to problems such as sieve hole clogging and low screening efficiency.

[0004] When the existing fertilizer extrusion granulator is granulating fertilizer, powdered fertilizer will splash outside the equipment when it falls, thereby increasing the harm caused by the chemical components in the fertilizer being inhaled into the body. At the same time, the overflow of fertilizer dust will cause waste of fertilizer raw materials. At the same time, external dust will also enter the interior of the equipment, causing pollution of the granular fertilizer.

[0005] In the existing fertilizer extrusion granulator, the fertilizer input is stuck between the two electric rollers due to viscosity or humidity problems during fertilizer granulation, causing equipment blockage. This results in quality defects such as irregular fertilizer granules and large size deviations. At the same time, long-term blockage damages the two electric rollers in operation.

[0006] To this end, an extrusion granulator for fertilizer production is proposed. Summary of the Invention

[0007] The object of the present invention is to provide an extrusion granulator for fertilizer production to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: an extrusion granulator for fertilizer production, comprising a granulator housing, a fertilizer input pipe fixedly connected to the top of the granulator housing, an inner cavity of the granulator housing symmetrically rotatably connected to a motorized roller, a screening assembly provided inside the granulator housing, the screening assembly comprising a fixed rectangular shell, the fixed rectangular shell fixedly connected to the top of the inner cavity of the granulator housing, a first rotating column rotatably connected to the side wall of the inner cavity of the granulator housing, a first synchronous belt transmission-connected between the outer side of the first rotating column and one of the motorized rollers, a second rotating column rotatably connected to the side wall of the inner cavity of the granulator housing, a second synchronous belt transmission-connected between the outer side of the second rotating column and the first rotating column;

[0009] The inner cavity of the granulator housing is provided with a dust-proof component, and the dust-proof component includes two first sliding openings, and the two first sliding openings are opened inside the granulator housing;

[0010] The inner cavity of the granulator shell is provided with an inertia trigger component, and the inertia trigger component includes a second connecting column, and the second connecting column is fixedly connected to an end of the first rotating column away from the inner wall of the granulator shell.

[0011] Furthermore, the screening assembly also includes a disc rack, which is fixedly connected to the side of the second rotating column away from the inner wall of the granulator shell. The disc rack is eccentrically provided with a notch, and the bottom of the inner cavity of the granulator shell is rotatably connected to the third rotating column. The outer side of the third rotating column is symmetrically fixedly connected to the limiting column, and the outer sides of the two limiting columns are rotatably connected to circular sleeves, and the outer sides of the two circular sleeves are jointly fixedly connected to a U-shaped frame, and the middle part of the U-shaped frame is fixedly connected to connecting column 1.

[0012] Furthermore, the screening assembly also includes a loading pipe, which is fixedly connected to the top of the third rotating column. The outside of the loading pipe is fixedly connected to a discharge pipe. The outside of the discharge pipe is arranged with a plurality of circular holes in a circular array, and the inner diameter of the circular hole is smaller than the inner diameter of the granular fertilizer, thereby avoiding the situation of drying out the granular fertilizer. The bottom of the fixed rectangular shell is fixedly connected to a funnel, and the bottom of the granulator shell is penetrated and slidably connected to a recycling box.

[0013] Furthermore, the dust-proof component also includes two sliding plates, each of the sliding plates is slidably connected to the inside of each first sliding opening, a semi-arc opening is opened on the side wall of each sliding plate, and a first connecting plate is fixedly connected to the side of each sliding plate away from the semi-arc opening. The outer wall of the granulator shell is symmetrically fixedly connected with a fixed plate, and a first spring is fixedly connected between each fixed plate and the first connecting plate. A second sliding opening is opened on the granulator shell.

[0014] Furthermore, the inertia trigger assembly also includes an arc groove, which is opened on the side of the second connecting column. The interior of the arc groove is rotatably connected to a rotating rod, and the end of the rotating rod away from its center is fixedly connected to a second connecting plate. The interior of the arc groove is symmetrically fixed with a touch button, and the two sides of the rotating rod are respectively fixedly connected to the inner wall of the arc groove with a second spring.

[0015] Furthermore, the inertia trigger assembly also includes an electric slide, which is fixedly mounted on the inner wall of the fixed rectangular shell. The output shaft end of the electric slide is fixedly connected to a connecting rod, and the side of the connecting rod away from the output shaft end of the electric slide is fixedly connected to a diamond plate.

[0016] Furthermore, the radii of the two semi-arc openings are adapted to the radius of the discharge pipe, and the second sliding opening is adapted to slide with the discharge pipe.

[0017] Furthermore, the gap between the two electric rollers is located on the movement path of the diamond plate, and the touch button controls the power on and off of the electric slide through an external control panel. The two touch buttons are respectively located on the movement path of the second connecting plate.

[0018] Furthermore, the side wall of the fixed rectangular shell is rotatably connected to the electric roller, the outer side of the connecting column is plugged into the notch, the bottom of the funnel is rotatably connected to the loading pipe, and the funnel and the loading pipe are interconnected, and the recovery box is located below the discharge pipe.

[0019] Furthermore, the second sliding opening is slidably adapted to the sliding plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The setting of the screening component plays a role in the swinging operation of the discharge pipe, which significantly improves the contact area and frequency between the powdered fertilizer and the circular hole. The powdered fertilizer can quickly pass through the circular hole and fall into the collection box to avoid accumulation and blockage. It also avoids the problem of traditional screening nets relying on the fertilizer's own gravity or vibration screening, which is prone to blockage of the screen holes and low screening efficiency.

[0022] The setting of the dust-proof component firstly avoids the situation in which the powdered fertilizer splashes outside the equipment when falling during fertilizer granulation in the traditional granulator, thereby reducing the harm caused by the chemical components in the fertilizer being inhaled into the body, and at the same time avoids the waste of fertilizer raw materials caused by the overflow of fertilizer dust. Secondly, the two sliding plates drive the semi-arc openings on them to just clamp the outside of the discharge pipe, so that when the fertilizer granulation work is not in progress, it can also prevent external dust from entering the inner cavity of the granulator shell, thereby preventing the powdered fertilizer mixed with dust from falling into the recycling box during the subsequent production of granular fertilizer.

[0023] The inertia trigger component is designed to immediately handle the blockage of powdered fertilizer between the two motorized rollers. This avoids the need to shut down and clear the blockage in traditional granulators. It also prevents fertilizer from sticking to the two motorized rollers due to stickiness or humidity, thereby preventing quality defects such as irregular fertilizer particle shape and large size deviation. It also reduces the damage to the two motorized rollers in operation caused by prolonged blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic cross-sectional view of the shell structure of the granulator of the present invention;

[0026] Figure 3 It is a three-dimensional schematic diagram of the structure of the first rotating column, the first synchronous belt and the second rotating column of the present invention;

[0027] Figure 4 This is a three-dimensional schematic diagram of the structure of the material carrying pipe and the material discharging pipe of the present invention;

[0028] Figure 5 This is a three-dimensional schematic diagram of the discharge pipe and circular hole structure of the present invention;

[0029] Figure 6 For the present invention Figure 5 A schematic diagram of the structure at center A;

[0030] Figure 7 This is a schematic diagram of the positional relationship structure of the dust-proof components of the present invention;

[0031] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point B in the middle;

[0032] Figure 9 It is a three-dimensional schematic diagram of the first connecting plate, the fixing plate and the first spring structure of the present invention;

[0033] Figure 10 This is a schematic perspective view of the inertial trigger assembly structure of the present invention;

[0034] Figure 11 This is a three-dimensional schematic diagram of the first rotating column and the second connecting column of the present invention;

[0035] Figure 12 For the present invention Figure 11 A magnified schematic diagram of the structure at point C in the middle;

[0036] Figure 13 This is a three-dimensional schematic diagram of the electric slide and connecting rod structure of the present invention;

[0037] Figure 14 It is a three-dimensional schematic diagram of the electric slide, connecting rod and diamond plate structure of the present invention.

[0038] The numbers in the figure represent:

[0039] 1. Granulator housing; 2. Fertilizer input pipe; 3. Motorized roller;

[0040] 4. Screening assembly; 401. Fixed rectangular housing; 402. First rotating column; 403. First synchronous belt; 404. Second rotating column; 405. Second synchronous belt; 406. Disc rack; 407. Notch; 408. Third rotating column; 409. Limiting column; 410. Round sleeve; 411. U-shaped frame; 412. Connecting column 1; 413. Loading pipe; 414. Discharge pipe; 415. Round hole; 416. Funnel; 417. Recovery box;

[0041] 5. Dust-proof assembly; 501. First sliding opening; 502. Sliding plate; 503. Semi-arc opening; 504. First connecting plate; 505. Fixed plate; 506. First spring; 507. Second sliding opening;

[0042] 6. Inertia trigger assembly; 601. Connecting column 2; 602. Arc groove; 603. Rotating rod; 604. Second connecting plate; 605. Touch button; 606. Second spring; 607. Electric slide; 608. Connecting rod; 609. Diamond plate. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] See also Figures 1 to 14 , is an embodiment provided by the present invention: an extrusion granulator for fertilizer production, including a granulator housing 1, the top of the granulator housing 1 is fixedly connected to a fertilizer input pipe 2, the fertilizer input pipe 2 is used to input powdered fertilizer, the inner cavity of the granulator housing 1 is symmetrically connected to a motorized roller 3, the motorized roller 3 is a prior art and will not be described in detail, the two motorized rollers 3 rotate in opposite directions, one of the motorized rollers 3 is provided with a synchronous wheel, and the other motorized roller 3 is not provided with a synchronous wheel, the interior of the granulator housing 1 is provided with a screening component 4, the screening component 4 includes a fixed rectangular shell 401, the fixed rectangular shell 401 The side wall is rotatably connected to the electric roller 3, and the fixed rectangular shell 401 is fixedly connected to the top of the inner cavity of the granulator housing 1. The first rotating column 402 is rotatably connected to the side wall of the inner cavity of the granulator housing 1. Two synchronous wheels are provided on the first rotating column 402, and a first synchronous belt 403 is connected between the synchronous wheel of one of the first rotating columns 402 and the synchronous wheel of the electric roller 3. A second rotating column 404 is rotatably connected to the side wall of the inner cavity of the granulator housing 1, and a synchronous wheel is provided on the second rotating column 404. A second synchronous belt 405 is connected between the outer side of the second rotating column 404 and the first rotating column 402;

[0045] The inner cavity of the granulator housing 1 is provided with a dust-proof component 5, which includes two first sliding openings 501. The two first sliding openings 501 are opened inside the granulator housing 1;

[0046] The inner cavity of the granulator housing 1 is provided with an inertia trigger assembly 6 , which includes a second connecting column 601 . The second connecting column 601 is fixedly connected to an end of the first rotating column 402 away from the inner wall of the granulator housing 1 .

[0047] The screening assembly 4 also includes a disc frame 406, which is fixedly connected to the side of the second rotating column 404 away from the inner wall of the granulator housing 1. A notch 407 is eccentrically opened on the disc frame 406. The bottom of the inner cavity of the granulator housing 1 is rotatably connected to the third rotating column 408. The outer side of the third rotating column 408 is symmetrically fixedly connected to the limiting column 409. The outer sides of the two limiting columns 409 are rotatably connected to the circular sleeves 410. The outer sides of the two circular sleeves 410 are jointly fixedly connected to a U-shaped frame 411. The middle part of the U-shaped frame 411 is fixedly connected to a connecting column 412, and the outer side of the connecting column 412 is plugged into the notch 407.

[0048] The screening component 4 also includes a loading pipe 413, which is fixedly connected to the top of the third rotating column 408. The outside of the loading pipe 413 is fixedly connected to a discharge pipe 414, and a plurality of circular holes 415 are arranged in a circular array on the outside of the discharge pipe 414. The bottom of the fixed rectangular shell 401 is fixedly connected to a funnel 416, and the bottom of the funnel 416 is rotatably connected to the loading pipe 413. The funnel 416 and the loading pipe 413 are connected to each other. The bottom of the granulator shell 1 is penetrated and slidably connected to a recovery box 417. The recovery box 417 is located below the discharge pipe 414 and serves to collect fertilizer that passes through the circular holes 415 and falls.

[0049] The dust-proof component 5 also includes two sliding plates 502, each sliding plate 502 is slidably connected to the inside of each first sliding opening 501, and a semi-arc opening 503 is provided on the side wall of each sliding plate 502. The radius of the two semi-arc openings 503 is adapted to the radius of the discharge pipe 414. A first connecting plate 504 is fixedly connected to the side of each sliding plate 502 away from the semi-arc opening 503, and a fixed plate 505 is symmetrically fixedly connected to the outer wall of the granulator housing 1. A first spring 506 is fixedly connected between each fixed plate 505 and the first connecting plate 504. A second sliding opening 507 is provided on the granulator housing 1, and the second sliding opening 507 is slidably adapted to the sliding plate 502. The second sliding opening 507 is slidably adapted to the discharge pipe 414.

[0050] The inertia trigger assembly 6 also includes an arcuate groove 602, which is opened on the side of the connecting column 2 601. The interior of the arcuate groove 602 is rotatably connected to a rotating rod 603, and the end of the rotating rod 603 away from its center is fixedly connected to a second connecting plate 604. The interior of the arcuate groove 602 is symmetrically fixed with a touch button 605, and the two sides of the rotating rod 603 are respectively fixedly connected to the inner wall of the arcuate groove 602 with a second spring 606.

[0051] The inertia trigger assembly 6 also includes an electric slide 607, which is fixedly mounted on the inner wall of the fixed rectangular shell 401. The output shaft end of the electric slide 607 is fixedly connected to a connecting rod 608. The side of the connecting rod 608 away from the output shaft end of the electric slide 607 is fixedly connected to a diamond plate 609. The gap between the two electric rollers 3 is located on the movement path of the diamond plate 609. The touch button 605 controls the power on and off of the electric slide 607 through an external control panel. The two touch buttons 605 are respectively located on the movement path of the second connecting plate 604.

[0052] The above implementation works as follows:

[0053] The initialization steps are as follows:

[0054] The staff continuously puts large quantities of powdered fertilizer into the fertilizer input pipe 2. At this time, the staff starts the two electric rollers 3, and the two electric rollers 3 rotate in opposite directions, so that the powdered fertilizer falls onto the two electric rollers 3 through the fertilizer input pipe 2. The two electric rollers 3 then squeeze and granulate the powdered fertilizer through the holes on them.

[0055] The steps for running the job are as follows:

[0056] The working steps of the screening component 4 are as follows:

[0057] As described above, when the electric roller 3 rotates, the electric roller 3 drives the first rotating column 402 to rotate synchronously through the first synchronous belt 403, so that the rotation of the first rotating column 402 drives the second rotating column 404 to maintain the same direction and speed through the second synchronous belt 405. Therefore, the second rotating column 404 drives the disc frame 406 to rotate with the center of the connection between the disc frame 406 and the second rotating column 404 as the axis, so that the disc frame 406 drives the notch 407 to perform a circular motion with the center of the disc frame 406 as the axis. Due to the plug-in relationship between the notch 407 and the connecting column 1 412, the notch 407 pushes the connecting column 1 412 during the circular motion, so the connecting column 1 412 is pushed by the notch 407 and moves in an arc.

[0058] At this moment, the connecting post 412 moves in an arc shape, so the connecting post 412 also slides continuously inside the notch 407, avoiding the displacement difference caused by the arc movement of the connecting post 412 causing the jamming, thereby realizing that the connecting post 412 drives the U-shaped frame 411 to move synchronously, and the U-shaped frame 411 drives the circular sleeve 410 to rotate vertically back and forth with the connection between the limit post 409 and the circular sleeve 410 as the center of the circle, and the U-shaped frame 411 drives the circular sleeve 410 to rotate horizontally in the horizontal direction. The circular sleeve 410 drives the limiting column 409 to rotate back and forth in the horizontal direction, and the limiting column 409 drives the third rotating column 408 to rotate back and forth in the horizontal direction with the connection between the third rotating column 408 and the granulator housing 1 as the axis. Therefore, the third rotating column 408 drives the loading pipe 413 to rotate back and forth in the horizontal direction with the connection between the loading pipe 413 and the third rotating column 408 as the center of the circle, and the loading pipe 413 drives the discharge pipe 414 to swing back and forth horizontally with the center of the circle of the loading pipe 413 as the axis.

[0059] Therefore, as mentioned above, when the granular fertilizer falls to the bottom of the fixed rectangular shell 401 and falls into the loading pipe 413 through the funnel 416, the loading pipe 413 rotates horizontally and reciprocates, and the discharge pipe 414 swings horizontally and reciprocates, so that the discharge pipe 414 continuously transports the granular fertilizer to the outside of the inner cavity of the granulator shell 1. The granular fertilizer will continuously pass through multiple circular holes 415 on the movement path of the discharge pipe 414. Since the inner diameter of the granular fertilizer is larger than the inner diameter of the circular hole 415, The granular fertilizer will not pass through the circular hole 415, but when it is not granulated, that is, the two electric rollers 3 have not granulated all the powdered fertilizer, the remaining powdered fertilizer and the powder attached to the granular fertilizer will pass through the circular hole 415 and fall into the recycling box 417. At the same time, when the granular fertilizer reaches the end of the discharge pipe 414 away from the loading pipe 413, the staff will use a pre-prepared bag to collect the granular fertilizer discharged from the discharge pipe 414 and store it properly.

[0060] The powdered fertilizer falls onto the recycling box 417. When the recycling box 417 is full, the staff drags the recycling box 417 to slide it on the granulator shell 1, so that the powdered fertilizer inside the recycling box 417 is put into the fertilizer input pipe 2 again for extrusion granulation by the two electric rollers 3.

[0061] The setting of the screening component 4 plays a role in the swinging operation of the discharge pipe 414, which significantly improves the contact area and frequency between the powdered fertilizer and the circular hole 415. The powdered fertilizer can quickly pass through the circular hole 415 and fall into the collection box to avoid accumulation and blockage, and avoids the problem of traditional screening nets relying on the fertilizer's own gravity or vibration screening, which is prone to blockage of the screen holes and low screening efficiency.

[0062] The working steps of the dust-proof component 5 are as follows:

[0063] When the discharge pipe 414 swings back and forth horizontally, the discharge pipe 414 also slides in the inner cavity of the second sliding opening 507. As we all know, if the fertilizer is not granulated, the powdered fertilizer will be accompanied by dust during the falling process. Therefore, when the discharge pipe 414 slides and pushes the sliding plate 502, the sliding plate 502 slides inside the first sliding opening 501 and drives the first connecting plate 504 to move synchronously. Therefore, the first connecting plate 504 pulls the first spring 506, thereby preventing the reciprocating swing of the discharge pipe 414 from forming an opening that is too large between the inner cavity of the granulator shell 1 and the outside world. When the powdered fertilizer is completely granulated, the two sliding plates 502 drive the semi-arc openings 503 thereon to just engage the outer side of the discharge pipe 414, thereby preventing external dust from entering the inner cavity of the granulator shell 1 when the fertilizer granulation work is not in progress, thereby preventing the powdered fertilizer falling into the recovery box 417 from being mixed with dust during the subsequent production of granular fertilizer.

[0064] The provision of the dust-proof component 5 firstly avoids the situation in which the powdered fertilizer splashes outside the equipment when falling during fertilizer granulation in the traditional granulator, thereby reducing the harm caused by the chemical components in the fertilizer being inhaled into the body, and at the same time avoids the waste of fertilizer raw materials caused by the overflow of fertilizer dust. Secondly, the two sliding plates 502 drive the semi-arc openings 503 thereon to just engage the outer side of the discharge pipe 414, thereby preventing external dust from entering the inner cavity of the granulator housing 1 when the fertilizer granulation work is not in progress, thereby preventing the powdered fertilizer from falling into the recovery box 417 mixed with dust during the subsequent production of granular fertilizers.

[0065] The working steps of the inertia trigger component 6 are as follows:

[0066] First, when the electric roller 3 is just started, the touch button 605 will not turn on the power, so as to avoid the situation where the inertia generated when the first rotating column 402 starts to drive the second connecting column 601 causes an accidental touch. After the electric roller 3 rotates at a constant speed for a period of time, the touch button 605 is turned on. If the staff feeds powdered fertilizer into the fertilizer feeding pipe 2 and the powdered fertilizer does not cause a blockage between the two electric rollers 3, the electric roller 3 will always keep rotating at a constant speed. Therefore, when all the powdered fertilizers are extruded and granulated, the staff will turn off the power to all the equipment.

[0067] If the staff puts powdered fertilizer into the fertilizer feeding pipe 2, and the powdered fertilizer causes a blockage between the two electric rollers 3, the electric rollers 3 stop rotating due to the blockage. At this time, when the first rotating column 402 stops rotating, the first rotating column 402 drives the second connecting column 601 to stop rotating as well. Therefore, at the moment when the second connecting column 601 stops rotating, the rotating rod 603 still keeps the tendency to rotate, so that the rotating rod 603 still pushes the second spring 606 and drives the second connecting plate 604 to rotate on the arc groove 602, so the rotating rod 603 drives the second connecting plate 604 to rotate on the arc groove 602. The second connecting plate 604 moves toward the touch button 605. When the second connecting plate 604 touches the touch button 605, the touch button 605 starts the electric slide 607 through the external control panel. Therefore, the electric slide 607 drives the connecting rod 608 to move vertically upward. At the same time, the connecting rod 608 drives the diamond plate 609 to move vertically upward. At the same time, the electric slide 607 is set to reciprocate up and down, so the diamond plate 609 continuously moves between the two electric rollers 3, and the diamond plate 609 clears the powdered fertilizer blocked between the two electric rollers 3.

[0068] The inertial trigger component 6 is provided to promptly handle the blockage of powdered fertilizer between the two motorized rollers 3. This avoids the need to shut down the conventional granulator for clearing the blockage. It also prevents the fertilizer from sticking to the two motorized rollers 3 due to viscosity or humidity, thereby preventing quality defects such as irregular fertilizer particle shape and large size deviation. In addition, it reduces the damage to the two motorized rollers 3 in operation caused by prolonged blockage.

[0069] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0070] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion granulator for fertilizer production, comprising a granulator housing (1), a fertilizer input pipe (2) fixedly connected to the top of the granulator housing (1), and a motorized roller (3) symmetrically rotatably connected to the inner cavity of the granulator housing (1), characterized in that: A screening assembly (4) is provided inside the granulator housing (1), and the screening assembly (4) includes a fixed rectangular shell (401), the fixed rectangular shell (401) is fixedly connected to the top of the inner cavity of the granulator housing (1), a first rotating column (402) is rotatably connected to the side wall of the inner cavity of the granulator housing (1), a first synchronous belt (403) is connected between the outer side of the first rotating column (402) and one of the electric rollers (3), a second rotating column (404) is rotatably connected to the side wall of the inner cavity of the granulator housing (1), and a second synchronous belt (405) is connected between the outer side of the second rotating column (404) and the first rotating column (402); The screening assembly (4) further comprises a disc frame (406), the disc frame (406) being fixedly connected to a side of the second rotating column (404) away from the inner wall of the granulator housing (1), the disc frame (406) being eccentrically provided with a notch (407), the bottom of the inner cavity of the granulator housing (1) being rotatably connected to a third rotating column (408), the outer side of the third rotating column (408) being symmetrically fixedly connected to a limiting column (409), the outer sides of the two limiting columns (409) being rotatably connected to circular sleeves (410), the outer sides of the two circular sleeves (410) being commonly fixedly connected to a U-shaped frame (411), and the middle portion of the U-shaped frame (411) being fixedly connected to a connecting column 1 (412); The screening assembly (4) further includes a loading pipe (413), the loading pipe (413) being fixedly connected to the top of the third rotating column (408), the outer side of the loading pipe (413) being fixedly connected to a discharge pipe (414), the outer side of the discharge pipe (414) being arranged with a plurality of circular holes (415) in a circular array, the bottom of the fixed rectangular shell (401) being fixedly connected to a funnel (416), the bottom of the granulator shell (1) being penetrated and slidably connected to a recovery box (417), and the outer side of the connecting column 1 (412) being plugged into the notch (407).

2. The extrusion granulator for fertilizer production according to claim 1, characterized in that: The inner cavity of the granulator housing (1) is provided with a dust-proof component (5), the dust-proof component (5) includes two first sliding openings (501), the two first sliding openings (501) are opened inside the granulator housing (1), the dust-proof component (5) also includes two sliding plates (502), each of the sliding plates (502) is slidably connected to the inside of each first sliding opening (501), the side wall of each sliding plate (502) is provided with a semi-arc opening (503), and the side of each sliding plate (502) away from the semi-arc opening (503) is fixedly connected to a first connecting plate (504), the outer wall of the granulator housing (1) is symmetrically fixedly connected to a fixed plate (505), and a first spring (506) is fixedly connected between each fixed plate (505) and the first connecting plate (504), and the granulator housing (1) is provided with a second sliding opening (507).

3. The extrusion granulator for fertilizer production according to claim 1, characterized in that: The inner cavity of the granulator housing (1) is provided with an inertia trigger assembly (6), and the inertia trigger assembly (6) includes a second connecting column (601), and the second connecting column (601) is fixedly connected to the end of the first rotating column (402) away from the inner wall of the granulator housing (1). The inertia trigger assembly (6) also includes an arc groove (602), and the arc groove (602) is opened on the side of the second connecting column (601). The interior of the arc groove (602) is rotatably connected to a rotating rod (603), and the end of the rotating rod (603) away from the center of the circle is fixedly connected to a second connecting plate (604). The interior of the arc groove (602) is symmetrically fixedly installed with a touch button (605), and the two sides of the rotating rod (603) are respectively fixedly connected to the inner wall of the arc groove (602).

4. The extrusion granulator for fertilizer production according to claim 3, characterized in that: The inertia trigger assembly (6) also includes an electric slide (607), which is fixedly mounted on the inner wall of the fixed rectangular shell (401), and the output shaft end of the electric slide (607) is fixedly connected to a connecting rod (608), and the side of the connecting rod (608) away from the output shaft end of the electric slide (607) is fixedly connected to a diamond plate (609).

5. The extrusion granulator for fertilizer production according to claim 2, characterized in that: The radii of the two semi-arc openings (503) are adapted to the radius of the discharge pipe (414), and the second sliding opening (507) is adapted to slide with the discharge pipe (414).

6. The extrusion granulator for fertilizer production according to claim 3, characterized in that: The gap between the two motorized rollers (3) is located on the movement path of the diamond plate (609), and the touch button (605) controls the power on and off of the motorized slide (607) via an external control panel. The two touch buttons (605) are respectively located on the movement path of the second connecting plate (604).

7. The extrusion granulator for fertilizer production according to claim 1, characterized in that: The side wall of the fixed rectangular shell (401) is rotatably connected to the electric roller (3), the bottom of the funnel (416) is rotatably connected to the material carrying pipe (413), and the funnel (416) and the material carrying pipe (413) are interconnected. The recovery box (417) is located below the discharge pipe (414).

8. The extrusion granulator for fertilizer production according to claim 2, characterized in that: The second sliding opening (507) is slidably adapted to the sliding plate (502).

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