Separation and impurity removal equipment for macroelement water flush fertilizer

Abstract

The invention relates to the technical field of water flush fertilizer production equipment, in particular to macroelement water flush fertilizer separation and impurity removal equipment which comprises an impurity removal filter layer, an impurity removal opening, a solid storage device, an impurity removal filter disc, a mounting frame, a limiting clamping block, a solid storage box, a limiting clamping groove, a fixing rod, a water flush fertilizer stop block and a cleaning device. The conical structure of the impurity removal filter layer is designed to be sunken downwards, so that most insoluble impurities blocked on the surface by the impurity removal filter layer cannot stay on the surface of the filter layer all the time, roll downwards along the surface of the impurity removal filter layer under the action of self gravity and scouring of a solution, and finally fall into a solid storage device mounted at an impurity removal opening below the impurity removal filter layer; and the effect of reducing the number of insoluble impurities gradually accumulated on the surface of the impurity removal filter layer along with the separation and impurity removal process is achieved, so that the separation and impurity removal efficiency of the impurity removal filter layer is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of flushing fertilizer production equipment, in particular to a large amount of element flushing fertilizer separation and impurity removal equipment. Background Art

[0002] Fertilization is a method of fertilizing water-soluble fertilizers dissolved in water and applied directly to the roots of crops through irrigation systems such as sprinkler irrigation and drip irrigation. The concentration and frequency of fertilizers can be adjusted according to the different growth stages of crops. Among them, macronutrient fertilization contains more nitrogen, phosphorus and potassium, which can quickly supplement the large amount of nutrients needed by crops during rapid growth or when they are deficient, thereby improving the yield and quality of crops.

[0003] When producing and processing macronutrient fertilization, it is necessary to first select high-quality nitrogen, phosphorus, and potassium raw materials, and then mix them in proportion according to the nutrient requirements of different crops to ensure the uniform distribution of the ingredients; the mixed raw materials must also be dissolved in water for chemical reactions to convert the nutrients into a form that is easy for crops to absorb. After the conversion is completed, the insoluble substances and impurities in the fertilizer are removed through separation and impurity removal equipment to ensure the purity of the fertilizer. After the impurities are removed, the water in the solution is removed, and it can be packaged and sold after being concentrated into a solid or concentrated liquid.

[0004] The separation and impurity removal equipment in the above-mentioned processing flow usually blocks the insoluble impurities in the fertilizing solution on the surface of the filter layer by placing filter cloth, filter screen, etc. in the impurity removal equipment through one or more stages of filtration, and the dissolved fertilizing components are collected through the filter layer, thereby completing the screening of insoluble impurities; in this process, the permeability of the filter layer is the key to determining the working efficiency of the separation and impurity removal equipment. However, with the accumulation of working time, the insoluble impurities on the surface of the filter layer gradually increase, which will increasingly affect the separation effect of the filter layer on the fertilizing solution, resulting in a gradual decrease in the impurity removal efficiency of the separation and impurity removal equipment; and if the insoluble impurities accumulated on the surface of the filter layer are to be cleaned, the impurity removal work has to be stopped, and the equipment casing can be disassembled after all the solution in the equipment has flowed out, so that the impurities on the surface of the filter layer can be cleaned, which is time-consuming and labor-intensive, and further reduces the processing efficiency of the equipment. If the workload of processing the fertilizing solution is large, the frequency of dismantling the machine for cleaning will also increase, disrupting the production rhythm of the workshop and having an adverse impact on the efficiency development of the enterprise.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a large amount of element fertilization separation and impurity removal equipment. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, the technical solution adopted by the present invention to solve its technical problems is: a large-element fertilization separation and impurity removal equipment described in the present invention includes a box body, and a discharge port is opened at the lower end of the box body; it is characterized in that: a rectangular feed port is opened above the box body, and the interior of the box body is a hollow structure with the same cross-sectional size as the feed port; an impurity removal filter layer is fixedly connected to the side wall of the box body below the feed port, and the upper end of the impurity removal filter layer is fixedly connected to the feed port; the impurity removal filter layer is a downwardly concave square cone structure, and filter holes are evenly distributed on the surface of the impurity removal filter layer, and an impurity removal port is opened at the bottom of the impurity removal filter layer, and a solid storage device is installed at the impurity removal port, and the solid storage device is used to store solid impurities filtered out from the surface of the impurity removal filter layer.

[0007] Preferably, the angle between the four groups of impurity removal filter sheets constituting the impurity removal filter layer and the vertical box side wall to which they are fixedly connected is 30°.

[0008] Preferably, the storage device comprises: An installation frame, the installation frame is fixedly connected to the impurity removal port, and a limit block is symmetrically installed on the outer side wall of the installation frame, the limit block extends into the side wall of the installation frame and is elastically connected to the side wall of the installation frame; the cross section of the limit block is a right-angled trapezoidal structure with rounded corners at the blunt-angle edge; A solid storage box, wherein the bottom of the solid storage box is evenly provided with filter holes identical to the surface of the impurity removal filter layer; a limit card slot is provided at the symmetrical side wall at the upper end of the solid storage box, and the limit card slot cooperates with the limit card block.

[0009] Preferably, the bottom of the storage box has a curved structure with the center portion convex upward and the surrounding portions remaining flat.

[0010] Preferably, upwardly extending fixing rods are fixedly connected to the four corners of the installation frame, and fertilization blocks are fixedly connected to the fixing rods. The upper end of the fertilization block is a spherical structure, and the diameter of the spherical structure is larger than the diagonal length of the installation frame.

[0011] Preferably, a plurality of cleaning devices are installed inside the box above the impurity removal filter layer, and the cleaning devices are used to clean solid impurities stuck in the filter holes of the impurity removal filter layer. The installation position of the cleaning devices is at the same inclination angle as the corresponding impurity removal filter disc.

[0012] Preferably, the cleaning device comprises: A driving assembly, the driving assembly is used to provide driving force for the cleaning device; A transmission wheel, the transmission wheel is rotatably connected to the side wall of the box body, and the transmission wheel performs directional rotation under the action of the driving assembly; A cleaning rod, the cleaning rod is an "L"-shaped rod extending upward, and the cleaning rod is rotatably connected to a positioning rod extending from the inner wall of the box body at its bend; the horizontal long end of the cleaning rod is the same length as the upper surface of the impurity removal filter layer, and the long end of the cleaning rod close to the impurity removal filter layer is fixedly connected with bristles; The linkage rod has two ends which are rotatably connected to the outer edge of the transmission wheel and the short end of the cleaning rod extending upward.

[0013] Preferably, when the cleaning rod is not in operation, the long end thereof is in a horizontal position and is located above the impurity removal filter layer.

[0014] Preferably, the cleaning rod swings back and forth along the surface of the impurity removal filter layer under the action of the driving assembly, and when it rotates downward to the maximum rotation angle, the long end is just aligned with the lower edge of the impurity removal filter plate.

[0015] Preferably, the side wall of the box body is provided with a stepped exchange groove at the same height as the location of the storage device, and an exchange plate is detachably connected to the exchange groove, and an exchange handle is also fixedly connected to the outer surface of the exchange plate.

[0016] The beneficial effects of the present invention are as follows: 1. The conventional plane filter layer is replaced by a conical three-dimensional impurity removal filter layer composed of four groups of impurity removal filter discs. Under the condition of the same horizontal cross-section, the effective area of ​​the filter layer surface in contact with the solution and the impurity removal effect on the solution is greatly increased, thereby achieving the technical effect of enhancing the impurity removal filter layer's ability to handle the solution and extending the surface cleaning cycle of the impurity removal filter layer.

[0017] 2. The conical structure of the impurity removal filter layer is designed to be concave downward, and the angle between the impurity removal filter sheet and the vertical wall is designed to be 30°. The large downward inclined surface prevents most of the insoluble impurities blocked by the impurity removal filter layer from staying on the surface of the filter layer. Instead, they roll downward along the surface of the impurity removal filter layer under their own gravity and the scouring of the solution, and finally fall into the storage device installed at the impurity removal port below the impurity removal filter layer, which reduces the amount of insoluble impurities gradually accumulated on the surface of the impurity removal filter layer as the separation and impurity removal process proceeds, reduces the impurity removal pressure gradually accumulated on the impurity removal filter layer during operation, and reduces the frequency of regular disassembly and maintenance of the impurity removal equipment, thereby further improving the separation and impurity removal efficiency of the impurity removal filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of relevant components in the box of the present invention; Figure 3It is a three-dimensional structural component diagram of the storage device of the present invention; Figure 4 is a front cross-sectional view of the storage box of the present invention; Figure 5 It is a three-dimensional structural diagram of the cleaning device of the present invention and its related components.

[0020] In the figure: 1. box body; 2. discharge port; 3. feed port; 4. impurity removal filter layer; 5. impurity removal port; 6. storage device; 7. impurity removal filter; 8. installation frame; 9. limit card block; 10. storage box; 11. limit card slot; 12. fixing rod; 13. fertilizer flushing block; 14. cleaning device; 15. driving assembly; 16. transmission wheel; 17. cleaning rod; 18. positioning rod; 19. linkage rod; 20. exchange slot; 21. exchange plate; 22. exchange handle. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figures 1 to 5 As shown, an embodiment of the present invention provides a large-element fertilization separation and impurity removal device, including a box body 1, and a discharge port 2 is opened at the lower end of the box body 1; it is characterized in that: a feed port 3 of a rectangular structure is opened above the box body 1, and the interior of the box body 1 is a hollow structure with the same cross-sectional size as the feed port 3; an impurity removal filter layer 4 is fixedly connected to the side wall of the box body 1 below the feed port 3, and the upper end of the impurity removal filter layer 4 is fixedly connected to the feed port 3; the impurity removal filter layer 4 is a downwardly concave square cone structure, and filter holes are evenly distributed on the surface of the impurity removal filter layer 4, and an impurity removal port 5 is opened at the bottom of the impurity removal filter layer 4, and a solid storage device 6 is installed at the impurity removal port 5, and the solid storage device 6 is used to store solid impurities filtered out from the surface of the impurity removal filter layer 4.

[0023] As an embodiment of the present invention, the angle between the four groups of impurity removal filter sheets 7 constituting the impurity removal filter layer 4 and the vertical side wall of the box body 1 to which they are fixedly connected is 30°.

[0024] During the production and processing of flushing fertilizer, after the raw materials have completed the reaction, the solution is injected into the box 1 from the feed port 3 above the box 1, and the flushing fertilizer solution passes through the square cone impurity removal filter layer 4 inside the box 1. The filter holes of the impurity removal filter layer 4 block the insoluble impurities in the solution on the surface of the impurity removal filter layer 4, and the solution itself passes through the impurity removal filter layer 4 to the lower half of the box 1, and finally flows out from the discharge port 2 at the lower end of the box 1; the conventional plane filter layer is replaced by a conical three-dimensional impurity removal filter layer 4 composed of four groups of impurity removal filter sheets 7. Under the condition of the same horizontal cross-section, the effective area of ​​the filter layer surface in contact with the solution and the impurity filtering effect on the solution is greatly increased, thereby enhancing the impurity removal filter layer 4 The processing capacity of the solution and extending the surface cleaning cycle of the impurity removal filter layer 4 plays a technical role. Effect: Furthermore, the conical structure of the impurity removal filter layer 4 is designed to be concave downward, and the angle between the impurity removal filter plate 7 constituting the impurity removal filter layer 4 and the vertical wall is designed to be 30°. The large-angle downward inclined surface ensures that most of the insoluble impurities blocked on the surface of the impurity removal filter layer 4 will not always stay on the surface of the filter layer, but will roll downward along the surface of the impurity removal filter layer 4 under the action of their own gravity and the scouring of the solution, and finally fall into the storage device 6 installed at the impurity removal port 5 below the impurity removal filter layer 4, thereby reducing the amount of insoluble impurities gradually accumulated on the surface of the impurity removal filter layer 4 as the separation and impurity removal process proceeds, reducing the impurity removal pressure gradually accumulated on the impurity removal filter layer 4 during operation, and reducing the frequency of regular disassembly and maintenance of the impurity removal equipment, thereby further improving the separation and impurity removal efficiency of the impurity removal filter layer 4.

[0025] As an embodiment of the present invention, the storage device 6 includes: An installation frame 8, the installation frame 8 is fixedly connected to the impurity removal port 5, and a limit block 9 is symmetrically installed on the outer side wall of the installation frame 8, the limit block 9 extends into the side wall of the installation frame 8 and is elastically connected to the side wall of the installation frame 8; the cross section of the limit block 9 is a right-angled trapezoidal structure with rounded corners at the blunt-angle edge; The storage box 10 has filter holes evenly arranged at the bottom thereof, which are the same as those on the surface of the impurity removal filter layer 4 ; a limit card slot 11 is arranged at the symmetrical side wall at the upper end of the storage box 10 , and the limit card slot 11 cooperates with the limit card block 9 .

[0026] As an embodiment of the present invention, a stepped exchange groove 20 is provided on the side wall of the box body 1 at the same height as the storage device 6, and an exchange plate 21 is detachably connected to the exchange groove 20, and an exchange handle 22 is also fixedly connected to the outer surface of the exchange plate 21.

[0027] As an embodiment of the present invention, the bottom of the storage box 10 has a curved structure in which the central portion is convex upward and the surrounding portions remain flat.

[0028] As an embodiment of the present invention, the four corners of the installation frame 8 are fixedly connected with upwardly extending fixed rods 12, and the fixed rods 12 are commonly fixedly connected with a fertilizer application block 13. The upper end of the fertilizer application block 13 is a spherical structure, and the diameter of the spherical structure is greater than the diagonal length of the installation frame 8.

[0029] During operation, the insoluble impurities filtered out from the surface of the impurity removal filter layer 4 roll down along the surface of the filter layer to the impurity removal port 5 and fall into the solid storage box 10 of the solid storage device 6. The solid storage box 10 can collect these insoluble impurities so that they will not affect the impurity removal work of the impurity removal filter layer 4. However, on the one hand, as the working time accumulates, the storage capacity of the solid storage box 10 is limited, and there will inevitably be a situation where the solid storage box 10 is full and needs to be cleaned and replaced. For this reason, a mounting frame 8 fixedly connected to the impurity removal port 5 is designed at the impurity removal port 5, and the solid storage box 10 is fixedly connected to the impurity removal port 5. The storage box 10 is detachably connected to the mounting frame 8 by the cooperation between the limiting card slot 11 opened on the side wall and the limiting card block 9 elastically installed on the side wall of the mounting frame 8. In order to further simplify the process, a stepped exchange groove 20 larger than the storage device 6 is opened at the location of the storage device 6 on the side wall of the box body 1. When the insoluble impurities stored in the storage box 10 are full, the staff suspends the separation and impurity removal work of the fertilizer solution, and then unscrews the screws at the four corners of the exchange plate 21 threadedly connected to the exchange groove 20. The staff can then remove the exchange plate 21 from the exchange slot 20 by pressing the limit blocks 9 on both sides of the installation frame 8 to make the limit blocks 9 shrink toward the inside of the installation frame 8, thereby canceling the limit interference between the limit blocks 9 and the limit slots 11, and then gently pull the storage box 10 downward to remove the storage box 10 from the exchange slot 20; the staff can replace a new storage box 10 according to the actual situation, or clean the original storage box 10 and re-insert it into the installation frame 8 to complete the storage box 10. The replacement work is thus improved, thereby improving the efficiency of cleaning and replacing the storage box 10; it is worth noting that in order to further improve the comfort of the staff in the replacement work, the limit card block 9 on the installation frame 8 is also rounded at the outer obtuse angle, so that whether the staff presses the limit card block 9 to retract it inward to unlock the storage box 10 during disassembly, or compresses the limit card block 9 when the storage box 10 is pushed upward along the installation frame 8 during installation, the smooth surface can make the replacement process of the staff easier and more convenient; On the other hand, when the fertilizing solution is injected from the top feed port 3, in order to improve the processing efficiency, it will not be injected only in a small amount along the edge of the feed port 3, but the solution will enter the entire feed port 3, so as to maximize the separation and impurity removal effect of the impurity removal filter layer 4. Therefore, the fertilizing solution that has not been impurity-removed will also inevitably enter the storage device 6 located at the center of the impurity removal filter layer 4. For this reason, the bottom of the storage box 10 is designed as a convex structure with the center protruding upward, and the bottom of the storage box 10 is also provided with evenly distributed filter holes. Furthermore, a fixing rod 12 above the mounting frame 8 is used to fix a fertilizing block 13 with a hemispherical upper end on the fixing rod 12. Therefore, when the fertilizing solution enters from the center part of the feed port 3, it will not directly fall into the storage box 10, but will be blocked by the fertilizing block 13, and splashed on the spherical surface of the fertilizing block 13 onto the surrounding impurity removal filter layer 4, thereby completing the separation and impurity removal work on the impurity removal filter layer 4, and It will not fall directly into the storage box 10, which reduces the impact of the fertilizing solution on the storage capacity of insoluble impurities in the storage box 10 and reduces the retention of the fertilizing solution in the storage box 10. Despite this, it is inevitable that some of the fertilizing solution will flow into the storage box 10 along the surface of the impurity removal filter layer 4, or will still fall into the storage box 10 along the fertilizing block 13 during the sputtering process. At this time, due to the central convex design at the bottom of the storage box 10, the insoluble impurities entering the storage box 10 will be preferentially stored in the low-lying and flat positions around it, while the raised part in the middle remains exposed. Even if there is fertilizing solution entering the storage box 10, these solutions can be filtered out from the filter holes at the bottom. Even if there is some accumulated liquid, after accumulating to the central convex position, it can also flow out from the filter holes at the central convex position without being covered by insoluble impurities, thereby further reducing the retention of fertilizing solution in the storage box 10.

[0030] As an embodiment of the present invention, a plurality of cleaning devices 14 are installed inside the box body 1 above the impurity removal filter layer 4. The cleaning devices 14 are used to clean solid impurities stuck in the filter holes of the impurity removal filter layer 4. The installation position of the cleaning devices 14 is at the same inclination angle as the corresponding impurity removal filter plate 7.

[0031] As an embodiment of the present invention, the cleaning device 14 includes: A driving assembly 15, wherein the driving assembly 15 is used to provide driving force for the cleaning device 14; A transmission wheel 16, which is rotatably connected to the side wall of the box body 1, and the transmission wheel 16 is directional rotated under the action of the driving assembly 15; A cleaning rod 17, the cleaning rod 17 is an "L"-shaped rod extending upward, and the cleaning rod 17 is rotatably connected to a positioning rod 18 extending from the inner wall of the box body 1 at its bend; the horizontal long end of the cleaning rod 17 is the same length as the upper surface of the impurity removal filter layer 4, and the long end of the cleaning rod 17 close to the impurity removal filter layer 4 is fixedly connected with bristles; The linkage rod 19 has two ends which are rotatably connected to the outer edge of the transmission wheel 16 and the short end of the cleaning rod 17 extending upward.

[0032] As an embodiment of the present invention, when the cleaning rod 17 is not working, the long end thereof is in a horizontal position and is located above the impurity removal filter layer 4 .

[0033] As an embodiment of the present invention, the cleaning rod 17 reciprocates along the surface of the impurity removal filter layer 4 under the action of the driving assembly 15. When it rotates downward to the maximum rotation angle, the long end is exactly aligned with the lower edge of the impurity removal filter plate 7.

[0034] During operation, some insoluble impurities may still remain on the surface of the impurity removal filter layer 4, especially at the filter hole position, and do not fall into the storage device 6. For this reason, a plurality of cleaning devices 14 are installed above the impurity removal filter layer 4 at the same inclination angle as the corresponding impurity removal filter discs 7, wherein the cleaning rod 17 of the cleaning device 14 is "L"-shaped and the long end is fixedly connected with bristles near the impurity removal filter layer 4. When the equipment is in working state and there is no need to clean the surface of the impurity removal filter layer 4, the upper end of the bristles of the cleaning rod 17 is horizontally placed above the impurity removal filter layer 4. Therefore, the cleaning device 14 does not It will interfere with the separation and impurity removal work of the impurity removal filter layer 4 during operation. When the impurity removal work stops and the surface of the impurity removal filter layer 4 needs to be cleaned regularly, the staff only needs to display the driving component 15 of the cleaning device 14 on the control panel outside the equipment to drive the cleaning device 14 to clean the surface of the impurity removal filter layer 4, especially the filter holes of the impurity removal filter layer 4; the driving component 15 here is not limited to a specific type or model, and can be a stepper motor driven transmission wheel 16 as shown in the figure, or a worm drive can be used, and a worm wheel is selected as the transmission wheel 16, which is affected by The worm drive is used for directional rotation. In short, the driving assembly 15 only needs to be able to drive the transmission wheel 16 connected to the side wall of the box body 1 to make a directional rotation without interfering with the movement of the linkage rod 19 connected to the outer edge of the transmission wheel 16; when the driving assembly 15 starts to drive the transmission wheel 16 to make a directional rotation, the linkage rod 19, whose two ends are respectively connected to the outer edge of the transmission wheel 16 and the short end of the cleaning rod 17 extending upward, starts to move together, thereby pulling the cleaning rod 17 connected to the positioning rod 18 extending from the inner wall of the box body 1 at the bend to make a reciprocating swing. When the linkage rod 19 is rotated and pulled so that the short end of the cleaning rod 17 moves to the closest position to the transmission wheel 16, the long end of the cleaning rod 17 with the bristles also rotates downward to the maximum angle. At this time, the long end of the cleaning rod 17 is just aligned with the lower edge of the impurity removal filter 7. Therefore, when the driving component 15 drives the transmission wheel 16 to rotate a full circle, the long end of the cleaning rod 17 just completes the cleaning work of the surface of the impurity removal filter layer 4 once and returns to the uppermost horizontal position, which not only realizes the cleaning effect on the impurity removal filter layer 4, but also does not interfere with the impurity removal work of the impurity removal filter layer 4 for the next flushing of the fertilizer solution.

[0035] The above shows and describes the basic principles, main features and significant advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above specific embodiments. Without departing from the spirit and scope of the present invention, the present invention may also be modified and improved to adapt to different usage environments and customer needs. These modifications and improvements fall within the scope of protection of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A macro-element fertilization separation and impurity removal device, comprising a box body (1), wherein a discharge port (2) is provided at the lower end of the box body (1); the characteristics are: A rectangular feed inlet (3) is provided above the box body (1), and the interior of the box body (1) is a hollow structure having the same cross-sectional size as the feed inlet (3); a debris removal filter layer (4) is fixedly connected to the side wall of the box body (1) below the feed inlet (3), and the upper end of the debris removal filter layer (4) is fixedly connected to the feed inlet (3); the debris removal filter layer (4) is a square cone structure that is concave downward, and filter holes are evenly distributed on the surface of the debris removal filter layer (4); a debris removal port (5) is provided at the bottom of the debris removal filter layer (4), and a solid storage device (6) is installed at the debris removal port (5), and the solid storage device (6) is used to store solid impurities filtered from the surface of the debris removal filter layer (4).

2. The large-element fertilization separation and impurity removal equipment according to claim 1 is characterized by: The angle between the four groups of impurity removal filter sheets (7) constituting the impurity removal filter layer (4) and the side wall of the vertical box body (1) to which they are fixedly connected is 30°.

3. The large-element fertilization separation and impurity removal equipment according to claim 2 is characterized by: The storage device (6) comprises: An installation frame (8), the installation frame (8) being fixedly connected to the impurity removal port (5), a limit block (9) being symmetrically installed at the outer side wall of the installation frame (8), the limit block (9) extending into the side wall of the installation frame (8) and elastically connected to the side wall of the installation frame (8); the cross section of the limit block (9) is a right-angled trapezoidal structure with blunt-angled edges and rounded corners; A storage box (10), wherein the bottom of the storage box (10) is evenly provided with filter holes identical to those on the surface of the impurity removal filter layer (4); a limit slot (11) is provided at the symmetrical side wall at the upper end of the storage box (10), and the limit slot (11) cooperates with the limit block (9).

4. The large-element fertilization separation and impurity removal equipment according to claim 3 is characterized by: The bottom of the storage box (10) has a central portion that bulges upwards, and a curved surface structure in which the surrounding portions remain flat.

5. The large-element fertilization separation and impurity removal equipment according to claim 4 is characterized by: The four corners of the installation frame (8) are fixedly connected to fixing rods (12) extending upward, and the fixing rods (12) are fixedly connected to fertilization blocks (13). The upper end of the fertilization blocks (13) is a spherical structure, and the diameter of the spherical structure is greater than the diagonal length of the installation frame (8).

6. The large-element fertilization separation and impurity removal equipment according to claim 2 is characterized by: A plurality of cleaning devices (14) are installed above the impurity removal filter layer (4) inside the housing (1). The cleaning devices (14) are used to clean solid impurities stuck in the filter holes of the impurity removal filter layer (4). The installation position of the cleaning devices (14) is at the same inclination angle as the corresponding impurity removal filter disc (7).

7. The large-element fertilization separation and impurity removal equipment according to claim 6 is characterized by: The cleaning device (14) comprises: A driving assembly (15), wherein the driving assembly (15) is used to provide a driving force for the cleaning device (14); A transmission wheel (16), the transmission wheel (16) being rotatably connected to a side wall of the box body (1), the transmission wheel (16) being directional and rotatable under the action of the driving assembly (15); A cleaning rod (17), the cleaning rod (17) being an "L"-shaped rod extending upward, and the cleaning rod (17) being rotatably connected at its bend to a positioning rod (18) extending from the inner wall of the box body (1); the horizontal long end of the cleaning rod (17) is the same length as the upper surface of the impurity removal filter layer (4), and a brush is fixedly connected to one end of the long end of the cleaning rod (17) close to the impurity removal filter layer (4); A linkage rod (19), wherein two ends of the linkage rod (19) are rotatably connected to the outer edge of the transmission wheel (16) and the upwardly extending short end of the cleaning rod (17) respectively.

8. The large-element fertilization separation and impurity removal equipment according to claim 7 is characterized by: When the cleaning rod (17) is not in operation, its long end is in a horizontal position and is located above the impurity removal filter layer (4).

9. The large-element fertilization separation and impurity removal equipment according to claim 8 is characterized by: The cleaning rod (17) reciprocates along the surface of the impurity removal filter layer (4) under the action of the driving assembly (15). When the cleaning rod (17) rotates downward to the maximum rotation angle, the long end is aligned with the lower edge of the impurity removal filter plate (7).

10. The equipment for separating and removing impurities by fertilizing with large amounts of elements according to claim 3, characterized in that: The side wall of the box body (1) is provided with a stepped exchange groove (20) at the same height as the location of the storage device (6), and an exchange plate (21) is detachably connected to the exchange groove (20), and an exchange handle (22) is fixedly connected to the outer surface of the exchange plate (21).

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