Water-soluble fertilizer processing device and processing method thereof

Abstract

The invention relates to a water-soluble fertilizer processing device and a processing method thereof, and belongs to the technical field of water-soluble fertilizer screening machines. A water-soluble fertilizer processing device comprises a screening machine body, a screening base, a main screening plate, a plurality of auxiliary screens, a plurality of limiting rings, a pushing piece and a driving piece. The screening seat is mounted in the screening main body; a containing space exists between the screening base and the main screening plate, and a plurality of size-adjustable screening holes are formed in the main screening plate. The auxiliary screens are arranged in a sliding mode relative to the main screen plate, a plurality of second screen holes corresponding to the screen holes are formed in the auxiliary screens, and the sizes of the screen holes are changed by changing the positions of the second screen holes; guide grooves are formed in the limiting ring and the screening seat; the auxiliary screens are correspondingly mounted in the guide grooves in a sliding manner; the pushing piece is in transmission connection with the driving piece, and the driving piece is rotated to push the auxiliary screen to slide along the guide groove. And the driving piece is rotationally mounted on the main sieve plate, abuts against the inner wall of the rotating groove and is in transmission connection with the pushing piece. The problems that in the prior art, a screen plate is not convenient to replace in a bolt matching mode, rapid replacement and disassembly of the screen plate cannot be met, the process of changing the size of a screening hole of equipment is too tedious, rapid adjustment between different complex processes is not facilitated, and the screening efficiency is poor are solved. And accessories generated by processing cannot be treated in time.

Description

Technical Field

[0001] The invention belongs to the technical field of water-soluble fertilizer screening machines, and in particular relates to a water-soluble fertilizer processing device and a processing method thereof. Background Art

[0002] Water-soluble fertilizer refers to a compound fertilizer containing nitrogen, phosphorus, potassium, calcium, magnesium, trace elements, amino acids, humic acid, alginic acid, etc. that can be completely dissolved in water. There are two types of water-soluble fertilizers in terms of form: solid water-soluble fertilizers and liquid water-soluble fertilizers. In terms of nutrient content, there are water-soluble fertilizers containing large amounts of elements, water-soluble fertilizers containing medium amounts of elements, water-soluble fertilizers containing trace elements, water-soluble fertilizers containing amino acids, water-soluble fertilizers containing humic acid, organic water-soluble fertilizers, etc. In the production process of water-soluble fertilizers, the raw materials need to be crushed and screened, and there are rich varieties of water-soluble fertilizer raw materials. During the processing, due to the friction and impact between the materials, the volatilization of harmful substances or odors in the raw materials will be accelerated, and the equipment will produce a certain amount of floating dust after the processing is completed, which has some impact on the health of the staff.

[0003] After searching, it was found that the authorization publication number "CN215997537U" records that "the present invention discloses a screening device for water-soluble fertilizer production and processing, including a water-soluble fertilizer screening machine, the connection end of the water-soluble fertilizer screening machine is symmetrically provided with a groove, the interior of the groove is provided with a limiting screw, the top end of the connection end of the water-soluble fertilizer screening machine is symmetrically provided with a guide groove relative to both sides of the groove, the top bottom of the limiting screw is symmetrically fixed with a guide block, the guide block is connected with the guide groove by snapping, the surface of the limiting screw is sleeved with a gasket, and the surface of the limiting screw is screwed with a nut on one side of the gasket.

[0004] The present invention adopts a designed limiting screw, so that when the screen mesh inside the water-soluble fertilizer screening machine needs to be replaced, the limiting screw and the groove can be used to release the limit of the screening machine, so that the screening mesh with different aperture sizes can be replaced conveniently.

[0005] The prior art represented by the above device has at least the following problems when processing water-soluble fertilizer:

[0006] The bolt-matching method for replacing the sieve plate is not convenient enough and cannot meet the needs of rapid replacement and disassembly of the sieve plate. The process of changing the size of the equipment screening aperture is too cumbersome, which is not conducive to rapid adjustment between different complex processes, and the appendages generated by the processing cannot be handled in a timely manner. Summary of the invention

[0007] The present invention provides a water-soluble fertilizer processing device and a processing method thereof, which are used to solve the technical problems in the prior art that the replacement of the sieve plate by the matching method of bolts is not convenient enough, the rapid replacement and disassembly of the sieve plate cannot be met, the process of changing the screening aperture size of the equipment is too complicated, which is not conducive to rapid adjustment between different complex processes, and the appendages generated by the processing cannot be processed in time.

[0008] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0009] A water-soluble fertilizer processing device, comprising: a screening machine body, a screening seat, a main screen plate, a plurality of auxiliary screens, a plurality of limiting rings, a pusher, and a driving member. The screening seat is installed in the screening body; the main screen plate: the upper surface of the main screen plate is provided with an annular rotating groove along the circumferential direction, there is a accommodating space between the screening seat and the main screen plate, and the main screen plate is provided with a plurality of sieve holes of adjustable size; a plurality of auxiliary screens are slidably installed in the accommodating space, the plurality of auxiliary screens are respectively slidably arranged relative to the main screen plate along different preset directions, and the auxiliary screens are provided with a plurality of second sieve holes corresponding to the sieve holes, a passing gap is formed between the sieve holes and the second sieve holes, and the size of the passing gap is changed by changing the positions of the plurality of second sieve holes; a plurality of limiting rings are provided on the screening seat; A plurality of first positioning holes are provided, a plurality of the limiting rings are provided with a plurality of second positioning holes along the circumferential direction, a plurality of the limiting rings and the screening seat are provided with guide grooves, the auxiliary screens are correspondingly installed in the guide grooves, and the auxiliary screens abut against the inner side walls of the guide grooves; a pushing member is rotatably installed on the side walls of the guide grooves, and the pushing member is transmission-connected with the driving member, the driving member is rotated, and the pushing member is pushed to abut against the outer wall of the auxiliary screen, thereby pushing the auxiliary screen to slide along the guide groove; the driving member is rotatably installed on the main sieve plate, and the driving member abuts against the inner wall of the rotating groove, and is transmission-connected with the pushing member.

[0010] Furthermore, the main screen plate is provided with a plurality of guide grooves, the auxiliary screen is provided with mounting grooves corresponding to the guide grooves, and each of the auxiliary screens has a guide block, the guide block is used to be snapped into the guide groove, or to be snapped into the guide groove after passing through the mounting groove, so as to limit the sliding direction of the auxiliary screen.

[0011] Furthermore, a connecting rod portion is rotatably provided on the pushing member, one end of the connecting rod portion is rotatably provided on the pushing member, and the other end of the connecting rod portion is rotatably connected to the inner wall of the driving member. The driving member is rotated to drive one end of the connecting rod portion to move along the rotation direction of the driving member, thereby driving the pushing member to rotate relative to the guide groove, thereby pushing the auxiliary screen to slide.

[0012] Furthermore, the driving member cover is arranged on the screening seat, and the multiple auxiliary screens are stacked in sequence along the central axis of the main screen plate. The driving member drives the pushing member to push the multiple auxiliary screens to slide along the corresponding preset directions respectively through rotation, thereby changing the positional relationship between the multiple auxiliary screens and the main screen plate to change the size of the passing gap.

[0013] Furthermore, it also includes: an elastic element and a support plate. The elastic element is installed in the guide groove to reset the sliding of the auxiliary screen; the support plate is installed at the bottom of the screening seat to support the auxiliary screen installed on the screening seat.

[0014] Furthermore, it also includes: an electrostatic precipitator and a ventilation device. The electrostatic precipitator is installed on the screening machine body; the ventilation device is connected to the inside of the screening machine body and is used to collect and discharge the gas generated during the production of the equipment.

[0015] A processing method comprises the following steps:

[0016] Step 1: When the screening aperture needs to be changed, the driving member is rotated to drive the connecting rod to move and abut against the auxiliary screen;

[0017] Step 2: The guide block slides along the guide groove to drive the auxiliary screen to move along the preset direction of the guide groove where the auxiliary screen is located, and the auxiliary screens between multiple different layers slide relative to the main screen plate at the same time under the action of the driving member;

[0018] Step three: the plurality of second sieve holes are offset relative to the first sieve holes, thereby changing the size of the passing gap, thereby achieving a change in the sieve aperture.

[0019] The present invention provides a water-soluble fertilizer processing device and a processing method thereof, and the beneficial effects are:

[0020] 1. The present invention directly adjusts the size of the sieve holes of the main sieve plate by arranging a pusher in the main body of the sieving machine, thereby reducing the replacement operation of disassembling and assembling filter plates of different mesh sizes in various forms, thereby improving the use efficiency of the device;

[0021] 2. The present invention converts the rotation of the driving member into the sliding of the plurality of auxiliary screens in the limiting ring, thereby changing the aperture size of the main screen plate through the gap and improving the adjustment efficiency;

[0022] 3. The present invention provides the installation groove and the guide block so that the multiple auxiliary screens can move along the guide groove respectively, thereby reducing the interference between the components. The elastic element is provided to apply a resetting force to the auxiliary screen, thereby improving the reliability and stability of the sieve hole size control.

[0023] 4. The present invention uses the electrostatic precipitator and the ventilation device to treat the floating dust and odor generated in the device, thereby reducing the pollution caused by the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 A schematic structural diagram of a water-soluble fertilizer processing device provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the installation structure of the pusher, the driving member and the main screen plate provided in an embodiment of the present invention;

[0027] Figure 3 for Figure 2 Schematic diagram of the bottom structure of the middle structure;

[0028] Figure 4 for Figure 2 Exploded view of the structure;

[0029] Figure 5 for Figure 4 An enlarged schematic diagram of

[0030] Figure 6 A schematic diagram of the back of the main sieve plate provided in an embodiment of the present invention;

[0031] Figure 7 for Figure 2 Cross-sectional view of the structure.

[0032] In the figure:

[0033] 10-screening machine body; 20-screening seat; 201-main screen plate; 202-rotating groove; 203-screen hole; 40-driving member; 301-auxiliary screen; 302-second screen hole; 303-limiting ring; 304-first positioning hole; 305-second positioning hole; 306-guide groove; 307-pushing member; 308-guide groove; 309-installing groove; 310-guide block; 311-connecting rod; 312-elastic element; 313-support plate. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0035] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] Example:

[0039] Please refer to Figures 1 to 7As shown, this embodiment provides a water-soluble fertilizer processing device, including: a screening machine body 10, a screening seat 20, a main screen plate 201, a plurality of auxiliary screens 301, a plurality of limiting rings 303, a pusher 307, and a driving member 40. The screening seat 20 is installed in the screening body; the upper surface of the main screen plate 201 is provided with an annular rotating groove 202 along the circumferential direction, there is a accommodating space between the screening seat 20 and the main screen plate 201, and the main screen plate 201 is provided with a plurality of sieve holes 203 of adjustable size; a plurality of auxiliary screens 301 are slidably installed in the accommodating space, the plurality of auxiliary screens 301 are respectively slidably arranged relative to the main screen plate 201 along different preset directions, and a plurality of second sieve holes 302 corresponding to the sieve holes 203 are provided on the auxiliary screen 301, a passing gap is formed between the sieve holes 203 and the second sieve holes 302, and the size of the passing gap is changed by changing the position of the plurality of second sieve holes 302; a plurality of limiting rings 303 are provided on the screening seat 20 A positioning hole 304, multiple limiting rings 303 are all provided with multiple second positioning holes 305 along the circumferential direction, multiple limiting rings 303 and the screening seat 20 are all provided with guide grooves 306, the auxiliary screen 301 is correspondingly installed in the guide groove 306, and the auxiliary screen 301 abuts against the inner side wall of the guide groove 306; the pushing member 307 is rotatably installed on the side wall of the guide groove 306, and the pushing member 307 is transmission-connected with the driving member 40, the driving member 40 is rotated, and the pushing member 307 is pushed to abut against the outer wall of the auxiliary screen 301, thereby pushing the auxiliary screen 301 to slide along the guide groove 306; the driving member 40 is rotatably installed on the main sieve plate 201, and the driving member 40 abuts against the inner wall of the rotating groove 202, and is transmission-connected with the pushing member 307.

[0040] In this embodiment, if Figures 1 to 7As shown, a plurality of screening structures are arranged in the screening machine body, and each main screen plate 201 is at least equipped with three auxiliary screens 301, and correspondingly, at least two limiting rings 303 and a screening seat 20 should be equipped with, and guide grooves 306 are arranged on the screening seat 20 and the limiting ring 303 along three preset directions respectively, and the angles between the three preset directions are the same. Taking the three auxiliary screens 301 as an example, the angle between each two linear motion trajectories of the three auxiliary screens 301 is 60°, and through the rotation of the plurality of auxiliary screens 301 in different directions, the second screen hole 302 is offset relative to the central axis of the screen hole 203, thereby changing the size of the passing gap to quickly The device can quickly adapt to multiple screening sizes, and a positioning pin hole is opened on the side wall of the driving member 40, and the positioning column is installed by threading. The positioning column passes through the driving member 40 and abuts against the outer wall of the screening seat 20, thereby fixing the relative position between the driving member 40 and the screening seat 20, and fixing the size of the gap, thereby improving the stability and reliability after changing the screening size of the sieve hole 203, and driving the size of the sieve hole 203 by rotating the driving member 40, so that the screening size of the sieve hole 203 can be continuously changed, which reduces the screening size in the process being limited by the design size of the sieve to a certain extent in the traditional process, and improves the adaptability of the device to different process design contents.

[0041] Further, in some implementations of this embodiment, Figures 3 to 6 As shown, a plurality of guide grooves 308 are provided on the main screen plate 201, and mounting grooves 309 corresponding to the guide grooves 308 are provided on the auxiliary screen 301, and each auxiliary screen 301 has a guide block 310, which is used to be snapped into the guide groove 308, or to pass through the mounting groove 309 and then be snapped into the guide groove 308, so as to limit the sliding direction of the auxiliary screen 301.

[0042] In this embodiment, if Figure 6 As shown, the guide groove 308 has multiple design directions, including at least three design directions, and the three design directions include a first preset direction, a second preset direction and a third preset direction. The angle between the three preset directions is 60°. The multiple auxiliary screens 301 are the first screen, the second screen and the third screen from top to bottom. The first screen moves along the first preset direction. The multiple guide blocks 310 of the first screen are all slidably installed in the guide groove 308 opened along the first preset direction. Similarly, the guide blocks 310 set on the second screen and the third screen are respectively installed in the guide groove 308 opened along the second preset direction and the third preset direction. The first screen and the second screen are provided with a mounting groove 309. The mounting groove 309 provided on the first screen is used to penetrate the guide blocks 310 set on the second screen and the third screen; the mounting groove 309 provided on the second screen is used to penetrate the guide blocks 310 set on the third screen. The mounting groove 309 is used to improve the reliability of the installation between the guide blocks 310 on the lower screen and the guide groove 308 provided on the main screen plate 201.

[0043] Further, in some implementations of this embodiment, Figures 2 to 7 As shown, a connecting rod portion 311 is rotatably provided on the pushing member 307, one end of the connecting rod portion 311 is rotatably provided on the pushing member 307, and the other end of the connecting rod portion 311 is rotatably connected to the inner wall of the driving member 40. The driving member 40 is rotated to drive one end of the connecting rod portion 311 to move along the rotation direction of the driving member 40, thereby driving the pushing member 307 to rotate relative to the guide groove 306, thereby pushing the auxiliary screen 301 to slide.

[0044] In this embodiment, if Figure 7 As shown, one end of the push rod is rotatably set on the guide groove 306, and an opening for the connecting rod part 311 to slide is provided on the limit ring 303. A positioning structure corresponding to the connecting rod part 311 of each layer is provided on the inner wall of the driving member 40 for installing the connecting rod part 311. When the driving member 40 is rotated, one end of the connecting rod part 311 rotates along the circumference of the driving member 40 along with the positioning structure. Since the position of the limit ring 303 is fixed, the connecting rod part 311 drives the other end of the push rod to approach the auxiliary screen 301.

[0045] Further, in some implementations of this embodiment, Figures 2 to 7 As shown, the driving member 40 is covered on the screening seat 20, and the multiple auxiliary screens 301 are stacked in sequence along the central axis of the main screen plate 201. The driving member 40 drives the pushing member 307 to push the multiple auxiliary screens 301 to slide along the corresponding preset directions respectively by rotating, thereby changing the positional relationship between the multiple auxiliary screens 301 and the main screen plate 201 to change the size of the passing gap.

[0046] In this embodiment, if Figure 4 As shown, the components are installed in sequence from top to bottom. The driving member 40 is an annular component. Then the main screen plate 201, the first screen and the limiting ring 303, the second screen and the limiting ring 303 are installed in sequence, and their respective connecting rods 311 are extended into the positioning structure. Finally, the third screen and the screening seat 20 are installed, and finally the screening seat 20 is connected to the other limiting rings 303 through the first positioning hole 304 and the second positioning hole 305.

[0047] Further, in some implementations of this embodiment, Figure 4 and Figure 7 As shown, it also includes: an elastic element 312 and a support plate 313. The elastic element 312 is installed in the guide groove 306 to reset the sliding of the auxiliary screen 301; the support plate 313 is installed at the bottom of the screening seat 20 to support the auxiliary screen 301 installed on the screening seat 20.

[0048] In this embodiment, if Figure 7As shown, the elastic element 312 may be a spring, which is installed between the inner wall of the limiting ring 303 and the outer wall of the auxiliary screen 301. Figure 4 As shown, the support plate 313 may specifically be two wing plates installed in the screening seat 20 to prevent the auxiliary screen 301 from being separated from the screening seat 20, thereby improving the reliability of the entire device.

[0049] Furthermore, in some implementations of this embodiment, it also includes: an electrostatic precipitator and a ventilation device. The electrostatic precipitator is installed on the screening machine body 10; the ventilation device is connected to the inside of the screening machine body 10 and is used to collect and discharge the gas generated during the production of the equipment.

[0050] In this embodiment, a ventilation system is provided on the screening machine body 10 to collect and process floating dust and odor in the space inside the equipment cavity, and to adsorb and collect charged floating dust through electrostatic dust removal to prevent floating dust generated during the production process from agglomerating inside the equipment and affecting the normal use of the equipment as well as the cleaning and maintenance costs. The ventilation system is also used to process the gas generated during the vibration and collision of the production raw materials to prevent further impact on the environment.

[0051] A processing method comprises the following steps:

[0052] 1. When the screening aperture needs to be changed, the driving member 40 is rotated to drive the connecting rod 311 to move and abut against the auxiliary screen 301;

[0053] 2. The guide block 310 slides along the guide groove 308 to drive the auxiliary screen 301 to move along the preset direction of the guide groove 306 where the auxiliary screen 301 is located. The auxiliary screens 301 between multiple different layers slide relative to the main screen plate 201 at the same time under the action of the driving member 40;

[0054] 3. The plurality of second sieve holes 302 are offset relative to the first sieve holes 203, thereby changing the size of the passing gap, thereby achieving a change in the sieve aperture.

[0055] In summary, when using a water-soluble fertilizer processing device, the driving member 40 is rotated to drive the connecting rod portion 311 to move and abut against the auxiliary screen 301; the guide block 310 slides along the guide groove 308 to drive the auxiliary screen 301 to move along the preset direction of the guide groove 306 in which it is located, and the auxiliary screens 301 between multiple different layers slide relative to the main screen plate 201 at the same time under the action of the driving member 40; the multiple second sieve holes 302 are offset relative to the first sieve holes 203, thereby changing the size of the passing gap, and then realizing the change of the screening aperture, thereby reducing the replacement operation of disassembling and assembling filter plates of different mesh sizes in various forms, thereby improving the use efficiency of the device, improving the reliability and stability of the size control of the sieve holes 203, and reducing the pollution caused by the production process and the impact on the equipment.

[0056] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A water-soluble fertilizer processing device, characterized in that: include: Screening machine body (10); A screening seat (20) installed in the screening machine body (10); A main sieve plate (201), wherein an annular rotating groove (202) is provided on the upper surface of the main sieve plate (201) along the circumferential direction, an accommodating space exists between the sieving seat (20) and the main sieve plate (201), and a plurality of sieve holes (203) of adjustable size are provided on the main sieve plate (201); A plurality of auxiliary screens (301) are slidably mounted in the accommodating space, the plurality of auxiliary screens (301) are slidably arranged relative to the main screen plate (201) along different preset directions, and the auxiliary screen (301) is provided with a plurality of second screen holes (302) corresponding to the screen holes (203), a passing gap is formed between the screen holes (203) and the second screen holes (302), and the size of the passing gap is changed by changing the positions of the plurality of second screen holes (302); A plurality of limiting rings (303), a plurality of first positioning holes (304) are provided on the screening seat (20), a plurality of second positioning holes (305) are provided on the plurality of limiting rings (303) along the circumferential direction, a plurality of guiding grooves (306) are provided on the plurality of limiting rings (303) and the screening seat (20), the auxiliary screen (301) is correspondingly installed in the guiding groove (306), and the auxiliary screen (301) abuts against the inner wall of the guiding groove (306); A driving member (40) is rotatably mounted on the main sieve plate (201), and the driving member (40) abuts against the inner wall of the rotating groove (202); A pushing member (307) is rotatably mounted on the side wall of the guide groove (306), and the pushing member (307) is transmission-connected to the driving member (40). The driving member (40) is rotated to push the pushing member (307) to abut against the outer wall of the auxiliary screen (301), thereby pushing the auxiliary screen (301) to slide along the guide groove (306).

2. A water-soluble fertilizer processing device according to claim 1, characterized in that: The main screen plate (201) is provided with a plurality of guide grooves (308), the auxiliary screen (301) is provided with mounting grooves (309) corresponding to the guide grooves (308), and each of the auxiliary screens (301) is provided with a guide block (310), the guide block (310) being used to be snapped into the guide groove (308), or to pass through the mounting groove (309) and then be snapped into the guide groove (308), so as to limit the sliding direction of the auxiliary screen (301).

3. A water-soluble fertilizer processing device according to claim 2, characterized in that, A connecting rod portion (311) is rotatably provided on the pushing member (307), one end of the connecting rod portion (311) is rotatably provided on the pushing member (307), and the other end of the connecting rod portion (311) is rotatably connected to the inner wall of the driving member (40). The driving member (40) is rotated to drive one end of the connecting rod portion (311) to move along the rotation direction of the driving member (40), thereby driving the pushing member (307) to rotate relative to the guide groove (306), thereby pushing the auxiliary screen (301) to slide.

4. A water-soluble fertilizer processing device according to claim 3, characterized in that: The driving member (40) is covered on the screening seat (20), and the plurality of auxiliary screens (301) are stacked in sequence along the central axis of the main screen plate (201). The driving member (40) drives the pushing member (307) to push the plurality of auxiliary screens (301) to slide along the corresponding preset directions respectively by rotating, thereby changing the positional relationship between the plurality of auxiliary screens (301) and the main screen plate (201) to change the size of the passing gap.

5. A water-soluble fertilizer processing device according to claim 4, characterized in that: Also includes: An elastic element (312) is installed in the guide groove (306) and is used to reset the sliding movement of the auxiliary screen (301); A support plate (313) is installed at the bottom of the screening seat (20) and is used to support the auxiliary screen (301) installed on the screening seat (20).

6. A water-soluble fertilizer processing device according to claim 5, characterized in that: Also includes: An electrostatic precipitator installed on the screening machine body (10); The ventilation device is connected to the inside of the screening machine body (10) and is used to collect and discharge the gas generated during the production of the equipment.

7. A processing method, based on the water-soluble fertilizer processing device described in claim 6, characterized in that: The following steps are involved: Step 1: When the screening aperture needs to be changed, the driving member (40) is rotated to drive the connecting rod (311) to move and abut against the auxiliary screen (301); Step 2: The guide block (310) slides along the guide groove (308) to drive the auxiliary screen (301) to move along the preset direction of the guide groove (306) where the auxiliary screen (301) is located, and the auxiliary screens (301) between multiple different layers slide relative to the main screen plate (201) at the same time under the action of the driving member (40); Step three: the plurality of second sieve holes (302) are offset relative to the sieve hole (203), thereby changing the size of the passing gap, thereby achieving a change in the sieve aperture.

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